UNITED STATES DEPARTMENT OF THE INTERIOR

BUREAU OF RECLAMATION

I

HYDRAULIC LABORATORY TESTS OF SEALS FOR RADIAL GA TES

Hydraulic Laboratory Report No. Hyd-323

ENGINEERING -LABO RA TORIES BRANCH

DESIGN AND CONSTRUCTION DIVISION DENVER, COLORADO

January 23, 1952

CONTENTS;

Purpose

Conclusions

. . ,' ,. • . • 0 • • . . .. '.

.. . . . . . . ·• . . . . . . . ' . . .. . ;. . . . . . .. Recommendations •

Acknowledgments •

Introduction • • •

Descr_iption of Test .:Equipment

Radial Gate Side Seal Tests .

- -··-· -... . . . . . . .. . . . . . . . .

. . . .. . . . . I . . . . .

. . . Belt Type Seal without Brass Shoes • • • • • • • • • Belt Type Seal with Brass Shoes • • • • ·• • • . . • . Molded Type Belt Seal • • • • • • • • • • • • • • • • • Angle Seal without a Brass Bar • • • • . • • • • • • • • Angle Seal with Brass Bar Designs • • • • • • • • • • • Future Side Seal Investigations • • • • • • • • • • • . • •

Radial Gate Bottom Seal Tests . . . . 0 • •

LIST OF FIGURES

. . .

.. . .

Fi

Trenton Dam--42 9 x 30' Radial-Gate--General Installation • •

Trenton Dam--42 9 x 30 1 R.adial Gate--Gate Assembly • 0 • • • • •

Laboratory Test Rig--Assem'bly Drawing ••••••••oo•o

.

Views of the Test Rig • • • • • • • • • • • -. • • • • • • • • •

Wooden Mock-up of Radial Gate Side Seal Made from Rubber Belting . . . . . . . . . . . . . . . . . • . . . • . • .

. Wooden Mock-up of~ Rubber Belting Side Seal without Brass Shoes . . . . . . · . . . . . .. . . . . . . . . . · . . . •

Lateral Thrust Against Wall Plate of Rubber Belting Side Seal without Shoes Versus Distance x • • • • • • • •

. •.

Computed Frictional Drag Comparison of Side Seal Designs •

. . .

• • . 0

. . . • • .•.. --· - .

'

LIST OF ·FIGURES· (ConJinued) I

Belt Type Side Seals with Metal Shoes ... :• ..... I

Mock-up and Operating View of the 3/8- x 8iinch Rubber Belting Sid.e Seal with Shoes . . . . . . . ·. . . . • •

Figure

' ,9

· 10

Lateral Thrust Against Wall Plate of Rubber Belting Side Seal with Shoes Versus Distanc.e x . • • , • • • . . • . ;. 11

• I Molded.Belt Type Side Seal . • . . . . . . 1. •

I

Views of the Molded Angle Side Seal vvith Fabric Reinforcement and a Brass Bar . . . • . .

. Trenton Dam--42 1 x 80 1 Radial Gate Seals .

1• • • .•••

Sealing and Unsealing Heads of the All-rubbet Angle Side Seal with and without Brass Bar . . . • . :. • • • . ' .

Head Required to Seat and Unseat the Heel End of the AU..;rubber Angle Side Seal . . • . . • . :. . • ... ·•

I

Views of the AU-rubber molded angle· Side sJal Seated I . at 190 Feet Head .. • •...• ,· .... i· ••••

. Sealing and Unsealing Heads of ithe Fabric Reinforced Angle Side Seal. · • • • · • . • • . . • • • ~ • • . •

Trenton Dam--42' x 30 1 Radial Gate Side and \Bottom Seal Assembly . . . o • • · • • • • • . • • ·• •

1• • • • • •

Movement of Seal Toe of the Angle Side Seal IDue to Compression of Seal Stem . . . • • • • • • • •

1® Views of the Angle Side Seal with a Brass Bar Plus a

Rubber Seal Flap and with a Brass Plate . i. • • • !

Angle Side Seal with Brass Plate Added . . j.. • • •

Head Limitations to Obtain a Seal of the Angle Side Seal

. . . . .

with Brass Bar and Rubber Flap Addeq. . • ·!· • . ~. • . • . • .

Sealing ~nd Unsealing Heads of the All-rubbe~· Angle Side Seal with Brass Plate Added.. . . • • ~ . . - • • • • . • ,

2

12·

13

14

15

16

17

18.

-19

20

21

22

23

24

LIST OF FIGURES (Continued)

Operating Views of the Angle Side Seal with a Brass Plate at 1/2-inch Seal Gap . . . . • . . • . . .

Proposed Side Seal with a Brass Pipe and a Rubber Sealing Lip. . . . . . . . . . · . ·. . . o • • O O O o

Arrangement for Hydraulic Tests of Bottom Seal . .

Operation Views of Soft Rubber, Type A Shore Durometer 38,

•, .

Fig

Gate Bottom Seal . . . . . . . . . . . . . • . . • . • . . . . .

Force Required to Compress Radial Gate Bettom Seal f

3

UNITED STATES DEPARTMENT OF THE INTERIOR

BUREAU OF RECLAMATION

Design and Construction- Division Engineering Laboratories Branch Denver, Colorado January 23, 1952

Laboratory Report No~ 323 Hydraulic Laboratory Written by: W. C. Case Reviewed by: J. W. Ball

Subject: Hydraulic Laboratory tests of seals for radial gates

PURPOSE

To investigate the operating characteristics of radial gate rubber seal designs.

CONCLUSIONS

1. Fabric -reinforced rubber belting is unsuitable for radial gate side seals because when the belting is assembled to the curvature of a gate (Figure 6), the late:l'al thrust on the wall plate (seal seat) is high (Figure 7) which rtiSults in excessive frictional drag (Figure 8A).

2. Rubber belting with a brass shoe added to reduce frictional drag on the wall plate is also unsuitable. · The seal shoe assembly tested. (Figures 5, 9A and l0A) was-heavy, 140 8 pounds per linear foot of seal, the lateral thrust on the wall plate was very high (Figure 11), the fric­tional drag of the seal was high (Figure 8B), and the seal assembly did not slide easily upstream on the wall plate when the test gate was shifted nearer the wall plate which resulted in seal buckling (Figure l0B).

3. A belt-type seal molded angle shape with a brass shoe (Figures 9B and 12) is an improvement over the flat belting seal referred to in Conclusion No. 2. The friction drag on the wall is less (Figure 8C).and the seal assembly is lighter weight. The brass shoe tested did not slide easily upstream on the wall plate and the seal behavior was only fair.

4. The best side seal tested was an all rubber seal used by the Army Engineers.

. (a) This seal was angle-shaped without fabric reinforce­ment. The fabric r.einforcement shown in the design on Figure 13A appears unnecessary.

(b) The addition of the brass bar; as shown in Figures 13B and.19, reduces the friction drag (Figure SE) but also eliminates the desired rubber-to-metal (side wall plate) sealing surfaces. Whether or not the brass bar is used at a partic·ular installation will depend, among other things, upon the aniotint of permissible

friction drag and whether seal leakage will cause undesirable wetting or staining of adjacent parts of the structure.

(c) The head at :which sealing and unsealing took place was moderately low. Values are-given in Figure 15.

(d) When this seal was compressed between flat clamp plates, the sealing surface moved to increase the angle between the seal legs (Figure 20).

(e) Other brass-bar arrangements were attached to this seal with slight alteration to provide a rubber sealing lip (Fig- , ures 21 and 22), but none proved satisfactory for reasons given later in this report

5. The one radial gate bottom seal design tested was satisfactory (Figures 2 and Part 2, Figure 1-4). This rectangular seal is more likely to form an effective seal at surface irregularities in the sill plate (seal seat) when the seal is made of soft rubber, Shore Type A Durometer 38, than when made of harder rubber, Shore Type A Durom­eter 69. The force required to compress the seating edge of this seal is given in Figure 29.

RECOMMENDATIONS

Conduct further tests on the radial gate side seal to develope a seal with low frictional drag and with rubber-to-metal (side wall plate) sealing surfaces, such as the suggested seal shown in Figures 8H and 26.

ACKNOWLEDGMENTS

The personnel in the Mechanical Branch and the Hydraulic Laboratory of the Engineering Laboratories Branch collaborated in conducting the limited investigation of radial gate seals ·discussed in this report. ·

INTRODUCTION

The Bureau uses a large number of radial gates for controlling flow in open channel spillways where heads are relatively low. These gates are provided with seals along the sides and.bottom edges. The seals are usually clamped to the gates with metal spacers to permit tightening of the clamp plate bolts holding the seal in place (Figur·e 19). A typical gate and seals are shown on Figures 1 and 2.

The tests described in this report concern a limited study made· ~n radial gate seals during an investigation of high head seals .for coaster

2

q.nd fixed-wheel types of gates 'which has been reported in ·Hydraulic ~aboratory Report No. Hyd-311. 'J'he test equipment u~e_d wa~ designed e1pecifically for the high head-gate seal tesi~,-. and_ req~Jr.ed, o.nly @i.nor . IJ10difications for the hydraulic tests on the radial gp.te sealso Since no t~sting had been done in the'Hyd!t-aulic Laboratory on radial:·gate- s.eals tp.is test rig offered- an opportunity for conducting brief tests on this type Q:f seal although-the rig did· not' represertt: the best ·arrangement for ·such -tests. All the radial g~te· -seal, :samples wer·e supplied thr~ugh the Mechan-ical Branch.- · · · · , ,. · · ·

DESCRIPTION OF TEST EQUIPMENT

The test rig used fo.r conducting the hydraulic tests on radial gate seals is shown on (Figures 3 and 4)o · To obtain the best view of a ~ide seal in the rig window space available, a different ·seal back' plate q.nd window ·arrangement from that used for the high head seal'te·sts was installed. The steel baclc plate was made of 3/4--inch instead of l-1/2-iµch steel as shown in Figure 4A, and the plate was located farther down.:.. Sitream. Thus, the windows permitted a view pf a larger area,· Each window fitted into a slot in the steel back plate,· and the upstream face of the window was shouldered to fit in the rig frame. The windows were · c;ompressed between the rig frame and steel back plate by means of two -ij / 8-inch tie bolts outside each window.'· The bottom face of_ each window was· attached to the rig floor with four machine screws to a'ssure a w_at.er-: tight seal at these parting surfaces.- Thus, the windows were free of th~ qownstream movement of the back plate due to the water load which made the window assembly durableo The test 'gate was operated by a hydraulic jack which, in turn, was actuated by a portable, electric, motor-driven gil pump (Figure 4B). The rig sheet metal hood deflected the water to the laboratory channel below the floor level. The ho·od attachment wa.s E1,rranged for quick removal by loosening fou:r nuts which held four steel -Qabl~ ties. The rig was co~nected to a 12-inGh water supply pipe by a c;ircular-to-rectangular transition. The assimilated reserv_oir head was ~ead on the large Bourdon gage tapped into the 12-inch pipe~- Maximum

_ water head available in the laboratory was 19:_5 feet. · All seals tested· ·., ·· · · were full-size sections 12 inch.es long.. ..-.-, · ,

. Sliding of th_e side seal on the wall plate. which corresponds to,·: the radial gate opening or closing., was not possible with this equipm:ent .. _ · · !l'he side seal could be moyed· by the test gate in a direction normal to -_ · the wall plate. This movement corresponde:d to the sidewise movement· Qf a ~ield gate. Opening and closing o:f a -gate bottom seal was assimi­lated with this test -equipment.··.

Seal water leakage was not easily determined, but the exact values of leakage were: not required. When the seal seated, the· com-1:)ined leakages of the seal ·and· rig (past windows, gate leaf, ·etc. ) wer_e too small·to be: conveniently measured. Visual observations of the seal­to-s.eat lealcage sufficed for these t~sts.

3

RADIAL GATE SIDE SEAL TESTS

· Belt Type Seal Without Brass Shoes . . . . ·,

The Mechanical Branch proposed using a seal made from rubber beltingo A 15-foot long sample of 3/8- by 18-inch, fabric­reinforced, rubber belting was obtained for test. A seal 8 inches wide and 15 feet long was cut from the sample and assembled in a wooden mock-up of the clamp plates similar to Trenton Dam's radial gate (Figure 5). The purpose of the mock-up was to determine any · assembly difficulties of this seal. The belting was assembled first without the shoes (Figure 6), and no difficulties were encountered. The late.ral thrust per linear foot at various seal positions was deter­mined with no water load on the seal. The· results are shown in Figure· 7. The thrust was determined by lifting the seal up and off the laboratory floor. with a spring scale and a steel bar placed under and perpendicular to the seal axis--all arranged as a second-class lever with the floor representing the wall plate. The seal was lifted at a' point midway between two pieces of paper placed 12 inches apart on the floor un~er the seal. When the paper could be slipped by hand, (thrust load on floor relieved) the spring-scale load was rece>rded, and the thrust computed. The lateral thrust was high and, with the addition of water load .on the seal, the resulting seal friction with'the side wall plate (seat) would require considerable power to operate. the gate. The approximate frictional drag of the seal on the wall plate is . 75. 1 pounds per inch of seal at a 40-foot head and zero seal gap,,t .. (zero gap defined in Figure 5"), as shown in the computation in ~gure BA. In view of the high drag, . no hydraulic tests were just:i,fied. · It was decided to investigate the same seal with the brass shoes bolted to the belting (Figure 9A) to reduce the frictional drag of the seal on the wall plate.

Belt Type Seal With. Brass Shoes

The belt seal with shoes was also assembled in a wooden mock-up (Figure lOA), using wooden shoes as shown in Figure 50 The wooden shoes were first bolted to the seal with the seal (belting) straight. The seal was then bolted to the 40-foot radius wooden form representing the gate edgeo Du.e to the added stiffness, the seal was somewhat more difficult to bolt to the 40-foqt radius than the seal without the shoes. Tests were made to determine the lateral thrust in pounds per linear foot of seal (Figure 11), and the thrust was much higher. than the same seal without the shoes. Even 'though the lateral thrust of the seal was higher with the brass shoes, the seal friction on the side wall plates was less, as illustrated by the computation shown in Figures 8A and 8~.

Hydraulic tests in the rig over the laboratory head range of . zero to 190 feet of water showed that when the gate was moved away from the wall plate (rig floor) the seal shoe slid downstream and re­mained in flat contact with the wall plate. However, when the gate was moved nearer to the wall plate, the brass shoe would not slide upstream

4

·On the wiall plate. and the rubber belting buckled (Figure lOB) •. The. heel of the b~ass shoe, point Y. Figure 5, lost contact with the wall -. plate wheri tJ:ie seal gap was 9/16-inch (distance x = 1-5/.1£:/.i--~,;·:,~•,, . Figu~e 11.). · and this value was essentially independent of the reservo.ir head. The seal behavfor was· considered unacceptable. The s_eal · w~ight was high, 140 8 pounds per iinear foot. ·

·,,flf.

Molded Type Belt Seal·

As a means of reducing the lateral thrust of the belt type of . seal. the Mechanical Branch proposed that the belt seal be molc;ied to the shape shown on Figure 12. The approximate frictional drag of a:. molded seal at 4O-foot head and zero gap is considerably less t11an the .. belt' seal (Figures 8B and BC). · Sufficient length of. such a seal was not. available for lateral thrust det'erminatiqns in the wooden mock-up. lt .. was decided to take the fabric-reinforced angle seal (Figure 13A) at).d.: · .machine it to 3/8-inch thick. The finished· seal with brass shoe •. shown in Figure 9B, weighed 3. 6 pounds per linear foot. Machining of the ...rubber was difficult. and an irregular seal edge was ·ootained.

At a 4O-foot head the brass shoe did not slip upstream freely ....as the seal gap w~s decreased from 3/8 to zero inch; however; the·. shoe did move slowly. The seal buckled at 1/4-inch negative gap.· and the se~ing lip raised slightly .from the seat (rig floor). If was po,s~ible., while decreasing the seal gap. to cause the upstream clamp plate to · contact the heads of the shoe attaching screws. because the sho.e wa~ slow to move upstream. The heel end of the seal shoe. poi:r,rt Y. Fig-ure 12, lost contact with the seat when_ the seal gap reached 3{8 inc.h. It was concluded the seal operation was only fair.

Angle $eal W,ithout a Brass Bar

Two designs of radial gate side seal used by the Army Engineers' were available for test; one. an all-rubber seal like.t~t shown as Part 1. Figure 14, and the other similar to it. except fabric. reinforced (Figure 13A). Each weighed about 2. 5 pounds per linear . foot. The seal in Figure 14, · Part 1 evolved from the laboratory tests . is intended for field use. This seal incorporates a slightly larger angle between the seal legs than the seal used by the Army Engineerso' Fig-

. ure 15 shows·the head required to seal and unseal the all=rubber seal. for gaps from zero to 1/2 inch. J\,-t 1/2-inch gap1 the water head re­quired for sealing was 22 feet, while that at w~ich unsealing occurred was. 8 feet. The maximum seal gap intended during gate operatio·n is approximately zer0. ·

Figure 16 show~ the head required to· seat and unseat ,the heel . .end of this seal fpr seal gaps from zero to 1/2 incho In g·eneral,· the head required was higher than encountered with radial gates. The lowerleg of the seal flattened to an undesirable curved shape (Figure· 1 7). ,A .s.eal that has been inst;tlled several yea.rs may take this shape at a• much lower ·head. The bolted leg of this seal stretches consid~rably1

5

as ·shown by ,the dimensjon "S" of Jngure 16. The frictional drag of this seal on the wall plate is likely to be high in comparison to other. designs· as shown in Figure 8D; otherwise, the behavior of this seal was good, and it provided the desired rubber-to-metal sealing. surfaces.

Figure 18 shows the head at whic.h sealing and unsealing of fabric-reinforced seal occurred for seal gaps from zero to 1/2 inch. The fabric-reinforced seal is much stiffer than the all-rubber seal, as indicated by the note on Figure 16. The laboratory tests-revealed no· · reason for needing the fabric reinforcement.

Angle Seal With Brass Bar Designs

Bra_.ss bars, or shoes, were added to the angle seal to reduce the frictional ~rag. Orie such design, weighing 3. 4 pounds per l;i.near foot, is shown in Figures 13B and 19. The estimated frictional drag of this seal on the wall plate is low (Figure BE) compared to other seal designs. Figure 15 shows the head at which sealing and unsealing oc­curred at gaps from zero to 1 / 2 inch. The added brass bar weight and possible changed flow conditions under the sealing surface resulted in a slightly lower sealing· and unsealing head compared to the all-rubber seal. However, it is intended that the seal be assembled with a 1/4-inch initial deflection (negative gap) as shown in .Figure 19 to assure a .. seal at very low heads near the top of the gate. With this 1 / 4-inch lateral gate movement possible (Figure 2; Section D-0), the s.ide seal could possibly be deflected 1/2 inch~ -With these conditions, .the heel end of the seal should clear the wall plate by approximately the thickness of the· brass bar, 3/16 inch {Figure 19). This clearance was determined from dimensions of the seal intended for field use (Figure 14, Part 1). If the heel end of the seal rubs on the wall plate, it is likely to cause excessive gate drag. At the higher heads, the lower leg of this seal . with a brass bar took a more severe curved shape than without the bar. Based on visual observations, the angle seal with the brass bar (metal­to-metal seal) leaked only slightly more than the all-rubber seal.

· Whet\ier or not the brass bar is used will depend, among other things. upon the amount C?f permissible frictional drag and whether seal leaka.ge · will cause objectionable stains or algae growth on adjacent parts 0,f the · structure.

. The movement of the seal surface due to clamp plate loads was investigated. lt was not certain whether the sealing surface would move inward or outward w.hen the. seal stem w:as compr~ssed between the clamp plates. The clamp plate load was applied by a Materials Labora­tories' testing-machine, as shown in Figure 20. Four dial indicator · gages were used; three to measure the sealing surface movement and one to.·measure the compression of the seal stem under load. The seal­ing surfa.ge moved outward, in.creasing the angle betw.een the .seal legso The results, shown on Figure 20, are not, conclusive because the ~.eal -~., toe movement was based upon approximately' a 1-foot length of se~ clamped fl~t;I · which do.es not cons~der the eftect of the seal cllilfilpeu to a large radius, such as 40 feet. Since the angle between the seal legs

6.

is greater than 90° (Figure 14, Part -1 ), it is conjectureq. tllat clam,ping the seal to a large radius, with no seal contact on the wa~l. plate, will also tend to make the seal toe move outward, the same d1:recti6n'. as· shown on Figure 20. · · · ·. 1 ·

Two seals were made that includ~d rubber~to-~etal sealing surfaces and a brass member to reduce the frictional, drag (fig"ijres 21 and 22). Both were reworks of the all-rubber angle seal design used_ . by the Army Engineers. The seal flap (Figure 21A) was _intended to be a sing~e piece, but rubber sheeting of the preferred thick;ness was not available so two thicknesses were cemented together. This seal was generally unsatisfactory at the lower heads, as the flap did not make contact with the seat (rig floo;r). The head required to obtain a seal was high (Figure 23). When the flap was in cont"act with the seat, the sealing was good. At the higher head, when the lower leg curved due to the greater pressure, the flap was lifted off the seat. The head at which this condition occurr.ed at various gaps is shown in Figur~ 23 0 The esti~­mated frictional drag of this seal on the wall plate is 13. 0 pounds per inch of seal at 40 feet of head and zero gap (Figure 8F). The seal weight per linear foot was 3. 6 pounds. ·

The seal shown in Figures 21B and 22 incorporated a more stabilized sealing lip. This seal was made from a 12-inch section of the all-rubber angle seal. A 2-1/2- by 3/16-inch brass plate was bolted to the seal to minimize the_frictioqal drag, especially high drag at nega.:. tive seal gaps., The head required to seal and unseal this seal is shown in Figure 24, and the results are ~omparable to those for the all-rubber angle seal with and without the brass bar (Figure 15). Operation of the seal at small gaps, less than 1/8 inch, was good, because the rubber sealing lip carried a small portion of the seal water load. The seal . operation was only fair at the larger seal gaps, to 1/2 inch, because the rubber seal lip carried a greater portion of the water load, thereby in­creasing the drag (Figure- 25). However, the maximum seal gap that is likely to occur in the field is estimated to be zero. The frictional drag at 40-foot head and at zero gap is approximately 11. 2 pounds per 'inch· length of seal (Figure BG). This seal welghed 4. 2 pounds per li:t~.ear foot.,

Future Side Seal Investigations

It appears from the foregoing, particularly the information on Figure 8, that a side seal design should include the features listed below. A suggested design incorporating these features .is show~ _in Figure 26.

(a). Near the· top of the gate where the head is low the sealing force of the s.eal should be independent of the water head. A satis­factory way to accompli15h this. may be to assemble the angle type seal to the gate with 1 / 4 =inch initial deflection of the seal against the wall plate.

(b) A rubber'.""to..:.inetal (wall plate) se~ is desired to obtain · . the least water leakage at the lower heads' near the top of a gate.

7

. To minimize0 th.e''fr'fcti6.nal_.drag of the .rubber member, the water load carried by this member must be low,· or negligible, and the · sealing force obtained primarily from the initial deflection of seal as stated in (a) above.· A metal-to-m'et'al seal is undesirable be­cause leakage might cause unsightly side wall stains or algae growth.

(c) The heel end of the seal should not be permitted to contact the wall plate because this would increase the frictional

· drag of the seal. Therefore, the seal water load at the heel end should be carried by the gate. Also, the lateral movement of the gate should be limited so that the heel end of the seal cannot rub on the wall plates.

(d) The seal area that is exposed to the water load should be as small as possible to reduce the seal water load to a minimum to keep the frictional drag of the seal low; however, this area must not be so small that an inadequate sealing force is provided by the water. The 1..;1/2-inch dimension in Figure 26 appears sufficient0 ,

(e) The major portion of the·seal water load onto the wall plates should be carried through a metal member to minimize the frictional drag of the seal. The extra strong 1 / 4-inch brass pipe shown in Figure 26 has the advantage of being a commercial part not specially made. The drilled holes in the brass pipe should ~s ~

· sure a good bond to rubber and thus eliminate bolting of the brass member to the seal. The brass pipe can be the same length as the molded seal sections. The pipe can be curved very slightly at field installation to fit the curvature of the gate. Joints in the brass mem­ber approximately every 2 feet as shown in Figure 19 could thus be eliminated. If the brass member is omitted, the all-rubber sealing surf.ace, results in a high seal frictional drag (Figure 8D).

(f) At the higher heads, it is desirable to relieve the force of the rubber seal lip on the wall plate to alleviate the frictional drag of the rubber lip. The short leg of the seal in Figure 26 will turn counterclockwise slightly about the brass pipe which gives the de­sired action. At the higher heads, the brass pipe· alone is likely to provide a satisfactory seal.

The estimated frictional drag of the seal in Figure 26 is 6. 0 pounds per linear inch of seal at 40 feet of head and zero gap (Figure 8H). This drag is low compared to 0 other seal designs shown on Figure 8, par­ticularly that shown on Figure BE, which does not incorporate a rubber sealing lip.

RADIAL GA.TE BOTTOM SEAL TESTS

The test rig was again modified as shown in Figure 27. The angle iron seal seat included a circular cut, 3/32 inch deep at the seat cent.er line and 3 inches wide, to represent a depression in the metal

8

-

seating surface (sill plate). The angle of the seal seat relative to the se~ was similar to that of a field gate (Figure 2). Two all-rubber seal samples were .available f,::,r test; each one was rectangular in section (Part 2, · Figure 14). One was. made of stock with a Type A Shore :Qurometer hard.ri.ess of 69. The other sample was made of stock with a Type A Shore Durometer hardness of 38.

Both seal samples wer.e tested in the ri.J. a.t heads of zero to 195feet of water. Both. seals appeared to. seal satisfactorily. At the highercompressions of the soft rubber seal, it deformed under the upstream clamp plate (Figure 28A). Based on visual observations, a better seal was obtained by extending the upstream cla.rp.p plate as shown in :f'igur~

. 27~ At heads of 55 or. more feet, the so;(t rubber seal had a tendency to .sweep under the downstream clamp plate .(Figure 28B).

The principal test conducted on these two seal samples was'to determine the force required to compress the seal. This information. was obtained o.n a universal-type testing machine in the Mater.ials Lab­oratories.. A plot of the compression on the seal in inches versus the compression force, pounds per foot of seal for wet and dry seats, is shown for both seal samples in-Figure 29. The wet seal seat data we:r:e obtained by submerging the seal seat (angle iron) in a pan of water •. Theforce required to seal the 3/32-inch deep cut for the hard-rubber seal was 140 pounds per foot, of seal, whereas the.force fpr the soft seal was 40 pounds. These data were desired for gate design purposes to assure sealing of depressions in the seal seat (sill plate).

9

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H~ ----- ,r---~-e:= --""=--=tfr-----~ ---r-~1', ,11 \..r • tl~~nnnr+ ill 11,, : 1~1

I :i: .~kmp/.1,.,,,,,.,., Ill ~ •:, : :11 I ~,~=-- _.,,_.,,_= -=-=~--"==~ --r'"'-"-':I~~ ~ :~I lttl : I! I -!Ml1I I I ) If 11'1~f_r-~--- ,->; ..... ---t6fa-- I----- ~.=""!'.~~~ ~ ,111 1

111 '

11if'1 " ,111 =eettt,===,1±!===ffi===,:t,1,r,,,,==~1tc,-: 1

111 ..,. .... --,-1_, , 1

1,1 ~ ,19):"-~..,_..~-- ----- ,, ------ -----~----- ,,-,,t,:-,,.-"i:lfi

ti ll'' I ri I ~I 1 Id i : 1: I ~ ~1:~-~--- -~~---ff~=~~- =.!'-=-~-*=-:'".::___ -==--T"-.:::~l:~~ ~::: =ttt===-±tt· J :,•: Crest El.,2743.00-, : ,ij r7::F~=-=-- 1 ~~-:*=-=~-=--- ..:..~=---==-~--==---=-~, ~--=::f--4~: ' __i_[L_ ____ - ____ ill______ -- ____ 1,ifl_____ f --..J- --!lr

-c:JA UPSTREAM ELEVATION

HOIST NOT SHOWN

---- ........

Max. W. S. El 2785.00·-,

Floot shown with gate raised 30'·0-.,

I _l

B

Floot shown with gate closed.-,

\.

Stop lag slQf-, ,.-wall plate

--· J.. l-. -~C):_·._i:_:_>i:> .]';-.<·_: _·p·_.·.

---·f Floatwells·-----'

I I I

'-.. ' I •• I t

~ : I

Crown El. 2793.17-_

.•. '7.

i -·-----:__ : El2776.00,, 1 1 , -~

• I it) I I .. -L-tl .. ----'11-··---, i : [ .. -,---,·· ~ I : \I : . I I : · , ·: ,,Maximum :water , 1 1 I' ii surface ,profile.

1 ,,

l: : I I 1:

!\

1

,1 1

1

: : _! I I I I ·t

I I I I I' I : I I I

I J': :,, ! I,: I I I I I I I I I : : I : I 'I I I: I ·I I I I I I :-··----4-·· : :L. __ ,_ .. _J I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I i I I I I I I I I I I I I I I I I I

. I I I I El.2743.50-. I I I I ,_

'1 I I I I \ I ~ I I /,

--- - -- - · -'tr-----u ----7l lr-----11--- ---,1

1: 1: q :: ,, ,, 11 ,, '1 ,, 11 ,,

:: :, :: :1 11 1

1 11 11 I. 11 !I !l

:·!::

.•?' ...

Side 58al/

,~ £ Highway Bridge ' Sta. 30+00.00

:~·--:·~---··---

Wall , plate•'

1 Upstream skin plate ·

\Stop/og slot

FLOW _____ ,_

SltCTION A-A

0 _, ~

-~--

: I :~ l'­

o•-!? -·: q_

~ii : It

!~ y t

a.Um +=·r····-······~r : Oi

·. -;,,,:-: :: -n I r.iJ ~! ,-E ~ c.:+H-- f ~ ~::'.L_ i L

';>: -.,.:

·······~i I ~,

1 I ~i ... : : ei

I <-, • '<I:'

' ~-

i Trunnion pin.---

FIGURE I Report Hyd. ~23

Counterweight' LJ 5\ SECTION 8-8 ,

Arm rotated in horizontal position

it ,,/~' ":::~,-? ,,~,,, ,,

// r, \~ ... -=~"

\._.-42'130' Radial gate

·.·.1

/Pin bearing ,, lubricating system

r

Stu.~di

I I

_,----i-Cocm1lrw1ight guide , I

I I I I I I I

I I I ,,El 2751. 75

/"!' ,-Bottom of counterwaight ft,J_i ( in lowered position. t -i -~ • NOTE

~ -·f--.ls t 1- All threads shall be coated with Crane Cos.

---- · "-. ·rhread Lubricant" or equivalent, before permanent assembly of parts iii shop or field.

THIS OR AWING SUPE RSEOES O WG. 328 - 0 - 977

UNITED STATES DEPARTMENT OF THE INTERIOR

BUREAU OF RECLAMATION

MISSOURI RIVER aASIN PROJECT FRENCHIIAN-CAIIBRIOGE DIIIISION - N~BR,

TRENTON DAM SPILLWAY

··-Sta Jo +16.95 42'• 30' RADIAL GATE

GENERAL INSTALLATION

REFERENCE DRAWINGS DRAWN .....•.. Q .•. #..~:. •... *"."8····SUIIMITT£0 __

42'• 30' RAO/AL GATE HOIST . SHEAVES AND GONNECTIONS __ • ____ • __ :UB-D-1255

SPILLWAY GATE STRUCTURE ___ • ______ 32B-D-

·-

Top of gate -··[/. 2773.00

r---1'. ·-----·

' ' :½Uystream ! skin plaf6

<:)! ~! .... j

i i I

! ! ' i

FLOW,_

Crest El 2743.oo ••

'

~

T Axi;;s:~;/~~:-~~~~j:\·.J--:\<·-?::·_: ~_'::: .. :~,~ Sto. JO •'2 00------1 · · . . .,, ...

r----sta JD+./6.95

__ _ 40'-0 R. ____ _______ •. --

f g system ~-'<" Pin bearing lubr~~'~104J--;.:---"~'--- ?~ ,-:._:~~

See Owg. 328

---1.- r,rlfl ~ .~so.~ __ .. - ci\ {.~ 'i -... \\ i .. ~-

~.. o\ i.. -~ .. -~ .n, 'i. \ "\ '

-- ----------------

, -Intermediate Pi.er anchor ._, girder. See Ow,g.J28-D-JOl8

Furnished b,y flie GOWJroment

½-J -, ·-4 Upset dio.

·nt1 beam support bracket

Upstream skin fi··,

: £ Arm/

FIGURE 2 Report Hyd. 323

?: 1\,!

I

<:): ·' I ,_,, .... l

' t t

I

..,i "'' ... ~l _, 1: 1: .... ..,. Ill! <:)• ~j

: ~ t

'I' I . . 1 ! '2J Dia. anchor bolts. Furnished f!y the Goverrment./ 1 Fumished by the G<NemmelTt.

SECTION B-B

GATE ASSEMBLY

CD LEAF

MATERIAL AS SPECIFIED ON OE TAILS ONE REQO. AS SHOWN ON OWGS 328-0·/02~

ro 328·0-1037 INCL. MARK 102~-I.

J Upstream / skin plate:·'

0\1-,-/

op,:/

_,,, _.,,

tntermediofe pier anchorage assembly. See Owg. 328-D-OIB. Fumished by the Govemme/Tf.

lfbrk ing line-. \

. :t/.~}/)·\. .~;<.~::,z.-t.:·~--Pier-:.-~·:· .. ·· ... _._.,.,-,

{:·<:::::>·.-~ Woll plofe-see0wg.J28-D·IOl6. / Furnished IJJ the Govemment.-'

Upstream skin plate-.,,

SECTION D-D Side seal ossembl,Y

-Sill plate, see Owg. 328-D-J0/6 / Furnished by the Government. NOTE

DETAIL C Bottom seal ossembl,Y

Section E- E shown on Owg. 328 - 0-1026 See note on Owg. 328-0-102~.

UNITED STATES DEMltTMENT OF THE INTElflOlt

IIUlfEAU 01' ltECLAMATION

MISSOUltl lt/Vl!lt eASIN PltOJIEOT l'ltl!NOHMAN-OAMelt/081! OIVISION - Nl!elt.

TRENTON DAM SPILLWAY

42'1t 30' RADIAL GATE GATE ASSEMBLY

-

, -Gate housing Mounting pad for 7" diometer

ri ___ L_l:

I_ *Clip.

,-Bolt or rivet 2 stock handles to hood '

.,-fBolt,bend shank as shown

hydraulic jock

1 ·

j I

I

! i:

-, ,,,,,,/ i _,f-',, {,,:

. ,· ,, )i;

,/

*Two clips each side, welded ta hood, bent over test rig, lo position hood whl'le fastening

---r Flexible steel cable 33f long between loop centers

:f

'=~·16 Ga. or heavier . I i ,/; I ,i -- 1)--~<,,-~i l +-J --.----~~~~::-:--_L

: ' "' .... : ~,~ 1

Iv~

' , .. , ' ii Flexible steel _'r<,-'···-- --------------------- ------21~------ - -------------~

cable loop __ . - -

FLOW>

Upstream and bottom faces open. Upstream flange {wide,boffom flange t"wide. 1·,r rubber gasket all along conloct sur}ace.

I 0

HOOD DETAIL SIDE ELEV.

SCALE OF INCHES FOR HOOD DETAILS ONLY

12

_.--,-Channel iron reinforcing belts-. ,,,.. '...... ..

,-2f x f x /6" Bar, weld lo hood,

: drill r dia. slotted holes

'--2·, { x 16" Bar, weld lo hood,

~~

---------12• Clear inside-------,

I

*C,,·r-~-~~==r~-~~~~--~ j

%

~,i II

HOOD DETAIL DOWNSTREAM ELEV.

,·,·fi Two-piece,2"plastic window

- ---Removable shims for varying - the seal- lo-seat gap

-$ • RIG ASSEMBLY SECTION

,,f­

~

Check and true olignment of jack shaft and base,gote chamber top and gate stem to insure gate contact with seal seat

throughout entire length of gate travel.

I

i~---r-1 ~ L-----+

I I

'1 I I

e I I~: 1~)

~I ;\!LIi

--- ,j ---~-------- : Hood ~ti5hawn -------1-CT-~--,, ------- I ..

~

t $

@)

$'

t $

TEST RIG HALF SECTION A-A

---~--- ·--­

Wl 'I I I

I I I

I I I I

I I

~ I I I I

ASSEMBLY

(@

HALF DOWNSTREAM ELEV.

-!""

,·4{•,{Bar

FIGURE 3 Report Hyd. 323

- . ··- ·--

All sections of seal 12· :!: long for snug sliding fit between plastic windows.

Furnish all screws for assembly.

' ,-2i{Bar

~--4!."xf Seal stem 1

clamp plate

---T : ,,Rubber seal test section ! : furnished byHJdroulic lob. Io . ' .. ' 0 I .t

i:;_;_tJ-----J, :/'1-,

,._.,YP: : I .. ,. ____ ,i --iiC/eor nom.

~--7

SEAL ASSEMBLY SECTION

• ,,-··'filp fs. f deep for 1------- 3•----+··f,~ J"-13 thds. cap screws

d5 -~,1& - :..+.: ' : ~ : \ ' : I o

\~ ' '

-ttt-t-· I lJJ • \ l

41"" 11" BAR 4 •

.L !.,.. r-·­

··-rap n.s. f deep for f-11 thds. socket hd. screw

' !-e~ ~ I

r:::·,:;;

- :~~

r 1f--;r---,f·-t .+: ¼~ I~ ,-:------~- -:+~! t J'--·w- { i

·o;i; and cir. bore for recessed i i l'>l- -{R ~ • socket head cap screw .L!.:. ----·15•

------T

4f1t r CLAMP PLATE

,Ori/I and ctr bare for f 13 : , ffldf" special cap screw

Grind if needed lo fit··--

'•,_ l<--------3" ------>t--lJ' --\@ @)). . ' ~32

13-f Pipe tap far water pipe~)

2!"x 2L" 1t l" ANGLE B 2 2

0 4

SCALE OF INCHES UNLESS OTHERWISE NOTED

HIGH HEAD GATE SEAL STUDIES LABORATORY TEST RIG-ASSEMBLY DRAWING

(A) Close-up view of the test rig for high head gate seal tests before the steel back-plate and window assembly were revised for the radial gate seal tests.

(B) General view of the test rig and equipment.

RADIAL GATE SEAL TESTS

Views of the Test Rig

FIGURE 4 Report Hyd-323

I

1 '

I', \../

--A .......... -_.. 11,1111,.---,

Port 3 broced to mo into in 40' rodius @

---- ---r-- ----- -40'Rodius---- -------- ___ ,_ __ ---

This distonce odjustoble.Zero , ,- 8 x f Belting(seall .,

seol to woll-plote gop is,efined ,;. when this distonce equals as shown..-' l ,..., , 1 --~ 1 :::::::-,,., ,

2 I 7 : t Side wall plate - - -­

(Laboratory floor!

i -

I

r-:-.. -'-I/

I

SIDE VIEW-ASSEMBLY

r ' -\... .-1,fl • ··Thirty-j drilled holes on

6" centers.

' ,Thirty-{ drilled holes to \ 6" cen ers.

r~ t -,v

r \ \... .,I

I

I'-:-,., '-1/

-.:, ..... ,t .. , • .. ,,

--. --, ... I

I

.

:..J,.

I I

' ' •CD

.. t ~ ----- --------&"--- - ---- --- .... - - - - - - - - - -6" - - - - - - - - . - ~ -----3"· - - -~

:... •• • • - - - - - - - - - - - - - -- - - - - - - -- - - - - - - - - ____ .,....__ - - - - -15'-o" ___ ..,,._ - - - - - - - - - • - - • - __ • __________________ ...:

PART 5 • ONE REQUIRED f • I" RUBBER BELTING ISEALI

--, I

·-i.­"' I

: ' I

L ___ -2f-- __ ±_ ---------6·- -- --- -- ___ i __ ---------69--- _______ J t ___ -2r:----J--t :

I

:.,. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -1'-11( - - - - - - - - - - - - - - - - - - - - - - - - - • - - - - -- - - -- - - - - - __ .,:

PART EIGHT REQUIRED

PINE WOOD

:c---1,-: 1 '

! i --i 1}-.--

' . ' '

----•f 1 ' "" i.- -___ ::::-___ ::-_-:::: :&":::: :- -- -- - ---------,• "t T =:: -------- ---- _____ ,,,,r:: ::: ::::L L I _J ---------------- --- ---- :~~---~~:::j l-r-.l

~Four-f drilled hales.

© @• - @ 4

'-Thirty- {f drilled holes on 6 centers.

PART 2 EIGHT REQUIRED

PINE WDDD

~----3"-----.l.-- --------6"-----------.l ~----------6"------------.1.----3"-----...; :... - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - :>"- - - - - -15' -o·- - - - - - r- ------ - - - -------------- ----- ---- -_,.;

PART 3 ONE REQUIRED

1° PINE WDDD

J"" I

: ' I I

' ' i ' .... I

'1,,1.. ' ')' '

I

' I I __ t L.L...J

rTM,fy-(d,UIM~,.. j t t I rn 1 on &"centers. ---1--+-+-----.....-~ : -

' 'ct' -a I• I -

-------- __ ,. ___ -- ------------- ___ ,. ___ -- ------=- -- __ ,. ____ ..; J" L ' ' :. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ..,.,._ - - - - -111'-o'! - - - - ..,,,._ _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - --...!

PART 4 ONE REQUIRED

1• PINE WOOD

0

SCALE OF INCHES

I

FIGURE5 Report Hyd.· 323

RADIAL GATE SEAL TESTS WOODEN MOCK-UP OF RADIAL GATE SIDE SEAL

MADE FROM RUBBER BELTING

(A) General view of the 3/8 x 8 inch x 15 foot long belting seal bolted to a 40-foot radius.

(B) ciose-up view of the above assembly.

RADIAL GATE SEAL TESTS

Wooden Mock-up of Rubber Belting Side Seal without Brass Shoes ,,.

FIGURE 6 Report Hyd-323

0 1 I I I ·1 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 111 II

I ii t--+--t--t----+__._..___ ....... """ __ -1 ..,.j,_ 1-.--J...-R..J..E_F.....JEL...R-E..L.N-CE....1.:_F....11G_U_R.J..E_S...1.5_A_NL,..D----L6.-+~l--+-+--+--+-+-1---l--+--+-+--l--1---l----l--+---I---IJ.~

No waterlood o~ seal. --..--111111~ '-1---+-l_ ~ • ..

,,a"xl Fabric rubber belting I .

¼1 I I I I

· ~ ,....-----No seal shoes. --=--_.;;:--..a:: .. ---wa~I plate.

~I I I I I

I 4I I I I I I en I I ~1 I I I I I I I I I I I I I I I I I I I I I I I Y )Cl I I I I I •

81 I I I I ,, C .%

A w s ::C - I c., I& I I I z I I I I

~ .,,, :a V Q) :a ' ·, _, -

-~ 1U tJ l 11 I~ 1111 l I I I I 1111 ~f 11111111111 0 ol t I I I I I I I I I I I I I I· I ~. 1 1 1 1 1 1-1 ,. 1, 1 1, 1, 1 • i1 I I t I I I. I I I ·1 I I I I ·1 I .,,,,,,,,.,,. • .... -~ ~ 9 ~~ ~ • . 1.- ~ . ~~ . 0 ,

~ . -s . I~ ~ .- .,, "' ~ / . . RADIAL GATE SEAL TESTS ~

LATERAL TH~·usT AGAINST WALL PLATE ~ OF RUBBER BELTING SIDE SEAL ::!!

., I~ I I I ·I I I l l I I l l l 1 l l l l l WITHOUT SHOES VERSUS DISTANCE x ~ ¾ - ~ · 10 l0 30 40 50 60 70 80. 90 100 · 110 120 130 140 • 150 . 160 170 180 190 ITI

&I I I l:Mff I I I I I I I I I I I I I I I LATERAL THRUST OF SEAL PER LINEAR FOOT, POUNDS · -..1

Reference, see Figure 6

''--Wo II plots

W=woter force on 4.o• dimension =(4.0"117.3= 69.2 lbs.I inch of seal.

R =po,:tion of W carried by wall plote•!il69.2l =58.8 lbs.I inch of sea I.

T = thrust force of sea I on wall plate due to bent sea I.= -It I bs./ inch of sea I from Figure 7 = 1.33 lbs./inch of seal.

F = total force an wall plate=R+T=58.8tl.33 •60.131bs./lnch of seal.

F'• total frictional force of seal on wall plate =f11F•(l.25l60.13=~./ inch of seal

A. RUBBER BELTING SEAL WITHOUT A BRASS SHOE

Reference,see Figures 5, 9A, and 10

I •

l--3.7"-->oi ~-o.6• -----Wall plate :C-- 4.3"--->ol

W=water force on 4.4" dimension=(4.4")17-3= 76. I bs./inch of sea I.

T = thrust force of seal on wall plate due to bent sea I= !fl- lbs.I inch of sea I from Figure 11 = 13.2 lbs.I inch of seal.

F = total 1orce on wall plate=~ w+r = * (761+13.2 = 87.5 lbs.I inch of seal.

B = portion of F carried by brass shoe=!·~ F = . H87.5=75.3 lbs./lnch of seal. · R =portion of F carried by rubber lip, lbs./inch

of seal= F-8=87.5-75.3=12.2 lbs.finch of seal. F1=totol frictional force= f8 B+fRR=(.25)75.3t

(1.25112.2.=34.I lbs.I inch of seal · -

8.RUBBER BELTING SEAL WITH A BRASS SHOE

' I

C.:-woll :.C--,.6·--~ ~-0.6" plate ~-- 2_2·--~

Reference,see Figures 98 and 12

W=woter force on 2.4" dimension=12.4l17.3•

F = t:~~ 11b;~{~~c:n °!:1~

0 ~I ate=}! W = !.! (41.51

=38.1 lbs.finch of seal. B = portion of F carried by brass shoe=~(38.ll

=27.7 lbs.finch of seal. · R = portion of F carried by rubber lip= f,B=

38.1-27. 7=10.4 lbs./inch of seal. F' = toto I frict iono I force on wo 11 plot e

=t.B +fRR=(.25)27.7+(1.25)10.4= 6.92+13.0= 19.9 I bs./ inch of sea I. -

C. MOLDED BELT TYPE SEAL WITH A BRASS SHOE

Reference, see Figure 13B

! -... : ' ... J.7'" ·--Wall plate

W=water force on 2.2" dimension = 12.2117.3 = 38.1 lbs.finch of seal.

F =total force on wall plate=Hl38.ll=29.5 lbs.finch of seal. ·

F'=total frictional force on wall plate=tRF= 11.25129.5=36.9 lbs./inch of seal.

0. MOLDED ANGLE SEAL WITHOUT A BRASS BAR

Reference, see Figures 138 and 19

-------''l::::::lf'=•· ... ·---Bra ss bar I I

!.1.5~

W•woter force on 2.2· dimension •(2.2117.3 = 38.1 lbs.finch of seal.

F = total force on wall plate= Hl38.ll=26.0 lbs./inch of seal.

F'=totol frictional force on wall plate =f,F=(.25126.0=~/inch of seal.

E.MOLOED ANGLE SEAL WITH A BRASS BAR

Brass bar-- - _

Wall plate-•'

Reference, see Figure 21A

•• -Seal flap(rubberl

T I I

-~ k-0.3"

Same assembly as item E, molded angle seal with a brass bar, total frictional force of 6.5 lbs./inch of seal plus

R=water force on 0.3~ dimension of seal flap =(.3117.3=5.2 lbs.linch of seal.

F'= total frictional force on wall plate=6.5t fRR = 6.5 ti 1. 25)5.2 = ~/inch of sea I.

F.MOLDED ANGLE SEAL WITH A BRASS BAR ANO A SEAL FLAP

,.--Lip o I ' ti

:.C-2. 1·-~ :.C-0.1· \--Woll plate

Reference, see Figures 218 and 22

W=woter force on 2.2• dimension =(2.2117.3= 38.1 lbs.I inch of seal.

F = total force on wall plate =W B = portion of F carried by brass plate,

lbs.I inch of seal= fil38.ll=36.4 lbs./ inch of sea I. ·

R = portion of F carried by rubber lip,lbs./inch of seal =f-8•38.1-36.4•1.7 lbs.I inch of seal

F' = total frictional force on wall plate =f 1 B +fRR•(.25l36.4t(l.25ll.7=11.2 lbs.finch of seal. -

G. MOLDED ANGLE SEAL WITH A BRASS PLATE

Reference, see Figure 26

r x-strong _.-r i :: brass pipe / -~f,,<-0.1• .123 wall : ->I :..C-o 5• thickness--' ·

··-wall plate

W=water force an 1.5" dimension •I 1.5117.3 = 26.0 lbs.I inch of seal.

F =total force on wall plote=rsl26.0l•17.3 lbs.I inch of sea I, ·

B =portion of F carried by brass, lbs.I inch of seal=~ F=ff 17.3=15.6 lbs./inch of seal.

R = portion of F carried by rubber lip, lbs./inch of sea I = F -B = 1.7 I bs./ inch of sea I.

F'=total frictional force on wall plate=f1 Bt f11R = (.25ll5.6tll.25ll.7• ~.!!!/Inch of seal

H. PROPOSED ANGLE SEAL WITH BRASS PIPE AND SEALING LIP

NOTES

FIGURE 8

Report Hyd. 323

1. The purpose of this sheet is ta make a frictional dra9 comparision of various s4de seal designs. Therefore, the same assumptions have been made in the frict;onal drag estimate far each design. The assumptions ore• (al Wet coefficient af friction, brass

to steel side wall plate,f,=0.25. (bl Wet coefficient at friction,

rubber to stee I side wo II plate, f11= 1.25.

(cl Sea I under 40 feet of water head or 17.3 p.s.i.

(di Nominal seal ta side wall plate gap= zero inches. Initial deflect ion af molded angular seals C,0,E,F,G, and H assumed zero inches.

2. Sketches of sea I ore not ta sea le.

RADIAL GATE SEAL TESTS COMPUTED

FRICTIONAL DRAG COMPARISON OF SIDE SEAL DESIGNS

(A) View of the rubber belting seal with brass shoes.

(B) View of the belt type, molded angle seal, with brass shoe, cut from a fabric reinforced angle seal shown on Figure 13A.

RADIAL GATE SEAL TESTS

Belt Type Side Seals with Metal Shoes

FIGURE 9 Report Byd-323

(A) Wooden mock-up of 15 foot length of seal bolted to a 40-foot radius.

(B) View of the seal buckling that occurred after the seal was shifted nearer to the wall plate (painted steel, rig floor) at 50 foot head. The lower brass shoe would not slide upstream.

RADIAL GATE SEAL TESTS

M,ck-up and Operating View of the 3 /&-by 8-inch Rubber Belting SJ.de Seal with Shoes

FIGURE 10 Report Hyd-323

0

.I ii

.1 8

} 16

l. 4:

Cl) II.I . :c ! O 16 z .. X S 11.18 0 z <t 7 I- ii CJ)

0 I

2

.! 16

5 i

ll. 16 ;

3 .4 20

-r

' J l -REFERENCE: FIGURES 5 ANO IOA.

J. No waterload on sea I. .

I I y _____

~ ·~ .. --- a"xj" fabric rubber·belting j , ~- If I _ ,j

,t- -, L ... ,

1' ... r _____ Li ~ /•-Seal shoes

/ A k : ~ . I " - "."--Woll plate i/ ,<

Q) / Ci,) ,-C:

/ t, .... .!!? / - 'tJ

~ / .0

/ C .. L.

,/ c· -s

i/ /

- / -/

RADIAL GATE SEAL TESTS ... / LATERAL THRUST AGAINST WALL PLATE

I/' OF RUBBER BELTING SIDE SEAL _.

ir WITH SHOES VERSUS DISTANCE X ..... 40 60 80 100 120 140 160 180 .200 220 240 260 280 300. 320 340 360

LATERAL THRUST OF SEAL PER LINEAR FOOT, POUNDS ''.)

::0 (1)

"O 0 , -+ :r:

.• "< ~

~ ,.. G)

C ~ ITI

---r-,-,'!.--r ·1-----y't..--,----

Test gate leaf.--•• '"j

I I I I I I I I l

1 ' --1 I I I I l---1

-- -- -- ..... __ _ ---

,--1 I I I I I I

- - _t:., __ __

I I I r~--------------~

1 1 I I I L--~--------------~--1 I

I I I I I I I I I I I I I I I I

', I ''-.J

FLOW ---

,-· Plastic window of test rig. ......... .., .......

-- -- -- -- -- ---- -- ---, ,----J I I I I I I I I I I I I I I I I l" 1 1 _,-4 Steel back plate. I ~ I I I I I I I I I I I I I I I I I

"f -----= ,p.- I .. , ,_ I ·--J.-Seal to side wall plate gap equaled

: I I zero when the test gate was in the -1 .,. .. , .. ., I 'c - - - - t. _ - _L _ - - 1 position shown.

'•-Heel end of shoe, point Y.

SIDE VIEW - ASSEMBLY

•

~--· Cutfaur f"holes.·) 11\ I ::.:L '·-w-·

' ' , I

'·Cut two 1" hales.

I I ' ------------,--------cut t~ree fhales.--

~-:.1:.-,

·Trl St I t =Ill: I

I IL,ie, ! ' ' ' ' ' ' ' I

I

' ' ' ~;. ~ I

' I

' ' :

1------+--1------+-----+------+-------+-----+-----+--+-------l------t

, -· t·_·:_-~---_ ~ ~:: _-_-; ~~ ~t·:~~1

-i~ ~---:-~ --- -- - --- ---4"-- - - - - - - -- - --- .J :

:-- - --- ----- --- - -- -- -- ---- ------ ---- -- --ll.990~g1~r ------- -- ----- ---- -- -- --- -- ------- ----....:

PART I-SEAL SEAL - ONE REQUIRED

Made from fabric reinforced angle seal, Figure 13A.

' ~--· ,Ori 11 three f holes and tap to f-18 NC

/ - th

---------r---------------- 1 t I ,..------- " -- "----4"--. -·--" •" -- - · . ..j.... - --- --- • -·-" ---4"--- --------- ---.I : I • 0

-- - --- -- - - -- --- - - - - - - • - - - - -- ----- - - -----ll.990-~ ti~i--- --------- -- ---- -- ---- --- ------ ------..l

4

PART 2-SHOE BRASS - ONE REQUIRED

L __ -- --------- _i.-- --_---------4·--- - - - ----,~-~t~ifr-----------4·--- --- - - - - ---.i __ - ----- - -- ___ J PART 3-BAR

BRASS-ONE REQUIRED

---r

FIGURE 12 Report Hyd. 323

··r, _,outline of fabric reinforced 11119re sea1 . I I ' I I' =-r: ii' I I

- ~I ' I I I : I I I r~ : : __ t -1- --.,t

I .•, .(t11:"/ -l~ ~,

-----------' ' I ,. I ~ : I :", t I : -------,--.., -- I I ___ J,_ : • -- --~~ >.. ___ fl .... --------21-----~----- ,

,~--: !' ,, ,.~--·/c"R. ' I . ' -: :

''% ...!A::_

0

SCALE OF INCHES

a •

RADIAL GATE SEAL TESTS MOLDED BELT TYPE SIDE" SEAL

(A) View of the angle seal with fabric reinforcement.

(B) View of the all-rubber angle seal with a brass bar added to reduce frictional drag on wall plate.

RADIAL GATE SEAL TESTS

Views of the Molded Angle Side Seal with Fabric Reinforcement and a Brass Bar

FIGURE 13 Report Byd-323

FIGURE 14 Report Hya, 323

LIST OF PARTS FOR THREE GATES

DRAWING PART NUMBER DESCRIPTION

MATERIAL MAt°'L. MJMBER NO. REQUIRED CLASSIFICATION REF. NO.

328-0-/04t. ' 6 Pc's. -34~0 lg. Ssol Rubbsr M/3 328·0·/046 2 3 Pc1s.·42~0 lg. Ssol Rubbsr 1,120

MATERIALS - SPECIFICATIONS AND MINIMUM PHYSICAL PROPERTIES MATL. REF. MATERIAL NO.

1,1/3 Rubbsr / Natural J

M20 Rubber

0 SEAL

RUBffER M/3 6 REQ'D. -MARK 1044-1

ULTIMATE TENSILE

STR.•/a

3,000

3,400

%ELONG REMARKS IN2"

500

675

DUROMETER lu~""NESS 60 7!171:

DUROMETER HARONESS40:!: 5

,.. ___ l_"""i ' ' ' I

' ·----, I I I ., I

• I I I

:. I I I

' I I I I I ~· 'I"

I

' I I

IL,--~.J.._.d

® SEAL

RUBBER M20 3 REQ1D. - MARK 1044 -2

NOTES Crots ssols to prsvent domogs in transit. Ssols to bs cut to lengtt, and drilled in field osssmbly.

REFERENCE DRAWINGS 42' x 30' RADIAL GATE

GATE ASSEMBLY _________________________ 32B-D-I025 SIDE AND BOTTOM SEAL

ASSEMBLY ____________________ ------32B·D-l044 SECTIONS ______________________________ 32B·D·I045

UNITED STATES DEPARTMENT OF THE INTER/DR

BUREAU OF REOLAMATION MISSOURI RIVER BASIN PROJECT

FRENCHMAN· CAMBRIDGE DIVISION-NEBR.

TRENTON DAM. SPILLWAY

412'x 30' RADIAL GATE SEALS -LIST OF PARTS-MATERIALS

DIIAWN ___ -l-_'N_,:@. ________ SIJIIMITTED- ~-·-~-----TRACED .. - ... ~·!':. _________ lfEGOMIIENDED .. ~--

CHECltED

NOTES

REFERENCE; FIGURE 13B1--r---1

1. No head readings could be obtained at_ seal gaps less than ,!-inch: _

2. He a d v a I u es v a r i e d m i n u s · 4 o % at !-inch to minus 10% at ½-inch gap.

I 2

7 16

(/) .l lLI 8

~ 1. z 16

I_ I a. -<[ 4

C) 3

..J ii <[

lLI I (/) 8

I ii

00

FLOW _ -::,.. £--Wall plate

I

I I b,11 --:..... , 1 .,,,,,,,. -- ~ • ~ ~

l r ,-He a d a t w h i c h sea I u n s e a I e d. ~ ~,.. i..--

I/ .I .. -- Seal without brass bar. -~ --- /~ -/

, ~~ -- ~"fl""'

/ / ~ - _.,, ,.. ~

/ ~ .. .,,,,,,,. --· ,./ ---~ , .. .. - --- .,,,,,,,.- /~

~ ~v )' ~. f-(- ~~

,,. ~Head at which seal sealed.· _,,,,. --

,· -- t>-"' ~' --- I ~ Seal without brass bar. , _.,,,,,,,. I - .. ,-

I \

''Head at which seal unsealed. --Head at which seal seal~d. Sea I with brass bar. Sea I with brass be r.

. . •

2 4 6 8 10 12 14 16 18 20 22 HEA O- FEET OF WATER

RADIAL GATE SEAL TESTS SEALING AND UNSEALING HEADS OF THE ALL

RUBBER ANGLE SIDE SEAL WITH AND WITHOUT BRASS BAR

:::0 l'D

't:J 0 -, ~

:I: '< 0.

241~ (>I

'Tl

G')

C ::u ITI

OI

NOTES REFERENCE: FIGURE 14 Part I. ,. Heel of the fabric reinforced seal ( Figurel3A)

seated at t9Ofeet head at zero gap.

Seo I gap.\ \

Wo 11 p late--_-... .::!i,....__' ... ..::,s-::;.. ___ _ f

____.r- FLOW~:>­

~----Heel

2. Neither the fabric reinforced o_r the all-rubber seal showed any tendency to 11 blow-thru 11 after 10 minutes at 19Ofeet head,½-inch gap.

(/) LLJ ::t 0 z

U)

LLJ

I 2

7 16

3 8

:I: 5 u i6 z I I

a. -<[ 4 (!)

..J 3 <[ ii LLJ U)

! 8

I 16

00

,

50 60 70

/ )

/ I l/ I

$,Increasing and I/ / ir decreasing head:- ' '· / _,,,,,,,,,. V' /

/ ' ./

, V ' '

./ ' V ...... V ' '

I ~ ... l/ I ~

,,,,.,,. /

l -~ Head at which

heel unsealed.- ---~ r/ \.Head required for I /· seating hee I.

/ ,. V / ~/ .

/., ./

r [/II' I/

.. 80 90 ·100 110 120 130 140 150 160 170 180 190 200

HEAD-FEET OF WATER

RADIAL qATE SEAL TESTS

-

I

:E I LLJ

- 1-4 (/)

..J 3 <[ is LLJ

(/)

LL ,o 8 1-

z LLJ

I :E is LL.I

0 <[ ..J a. (/)

o. I

(/)

HEAD REQUIRED TO SEAT AND SEAL THE HEEL END OF THE ALL RUBBER ANGLE SI DE SEAL

::(I

"0--:<(I<

'

G

C::I

0

(A) Zero gap. Note the large area of contact of the seal with the wall plate (rig fioor) which will increase the frictional drag of the gate. This condition might occur at a much lower head with an aged seal.

(B) One-half inch gap.

RADIAL GATE SEAL TESTS

Views of the All-Rubber Molded Angle Side Seal Seated at 190 Feet Head.

FIGURE 17 Report Hyd-323

r REFERENCE: FIGURE 13A.

Seal gap--..... -~

t " 7 ii

·s I'

en LIJ :I: s (.) -2 ..

' Q. I I <t 4

J (!)

.J 5 I <t -LIJ II en

I i

.!. fl

0 ·O 2

r-

.NOTES -1. No head readings could be obtained at·

seat gaps less than &-Inch. -- 2..He?d values varied± 20% for all gaps.

- --FLOW -> p--wa B plate.

- -17 I_...... ..... '

~~ ·_...... ,,,,,..

I/ " Head at which seal unsealed I/ ~ _j -. _...... ~ -- -- Head atwhich seal sealed.

"' 1 ....... --I _...... .....

.... -L..,

i...., .....

1/ .... '

/lo""

,

4 6 8 10 12 14 16 18 20 22 HEAD FEET OF WATER

'

RADIAL GATE SEAL TESTS SEALING AND UNSEALING HEADS OF THE

FABRIC REINFORCED ANGLE SIDE SEAL

24

::0 a, ,, 0 , "T

I '< 'a.

ffi "Tl

G') C: ::u ITI

CD

34

,,\-Joint. See ,, \ notes

fl Holes to match holes in skinpla~. See dwgs. 328· 0· I0JJ and 328· O· /034 ·- _

r··--·· T.

I '

:~:" : .••-'

34

'LL., ':~---11 R. : ,J i ,c.·.1 • .,..

SECTION A•A

VIEW E-E

I I

i I

I I I I I I I

DETAIL D

I

' I I I I I I I I I I I

I I

'"' '"' I ,. , .... t'-1 I I I I

\ I I I

SEAL CLAMP -STEEL 856

ONE REQ'D. AS SHOWN -MARK /044 ·37R ONE REQ'D. OPP. HAND -MARK l044·37L ONE REQ'D. AS SHOWN•/11/ARK l044·38R ONE REQ'D. OPP. HAND· MARK /044·3BL

:Symmetrical ': about Ct of' gate

"" ____________________ 9·-oJ ____________________________________ 9!0 ___________________ 7!0 _____ r __ ·> ->

'

I I

I I I I I

\ I

\ I I I

', I I

I I I I I I

..... ,,_. I ,-\ ,._ .. ~ '"' .. , ...

I ,,,. ,o .~ .... ',"' I I I I I I

\ I I I I

I

' I I

2f:3J 7 e 61 7Spc.(i)6= J!6 t!o 4W6'2·'o 6 6 6 6{_4/.# 7Spc.(i)6=J~6 t!o 6 6 .,,:,.,.(6)6,J'·D J' -ti rr·t·~r-~·:r····---- --- ·--t··-1----- ---j~:ttt·-rT~---------- ···-·-t-·tj-~1t.·~- --------, :' ' . . H-J. . ' J ~ . ' . ' . ' "'!J\c- . I Jt"! '

'-·-Bar 4-1/i

I . ./ .... , , I I ---,.---~ -r'-..: . '

I

' ' ' : .... :-.... I

' ' --f : !"oi°' __ y_:..t

·-. 'R -... i .

SECTION G·G

@@® FILLER STEEL 8$5

40

ONE REQ'D. AS SHOWN-MARK l044-39R ONE REQ'D. OPP. HAND -MARK l044·39L ONE REQ'D. AS SHOWN-MARK 1044· 4-0R ONE REQ'D. OPP. HAND- MARK 1044· 40L ONE REQ'D. AS SHOWN· MARK 1044-41

\,_fl Holes

2·-24 t<-- - ---- --- -- ----- - ----- - - ------- - -- -------- - - --- - - - --- -------~

~2/.>j< ___ <iF _______ 5Spc.@4-·=1'·8 ______________ 1

Ji_+~ I ,j. • • • . ,j. . ;.gj...Jz . 4' .,- - - -- -

~F @) ,oi/?~/ , 35 32~'

,t Dia. countersunk hotes~1

SEAL BAR BRASS J7

ONE REQ'D. AS SHOWN ·MARK 1044 ·35R ONE REQ'D. OPP. HAND -MARK l044· 35L

I I

\ Joints frJ be : ', cut in field : \ See nofts.,'

I I

2·-0;

I I I

\ ' I

I I I I I I

I I

\ I I I

' ' I \

DETAIL B ' \ , , oi.R ,,-\ 1rd:,!/

I

, j Dia. holes to be \ \ drilled in field ; \ assembly. See notes .I

\

'

~

' ' ' ' ' ' ' ' ' \

\ \

\\ \

',\ \

\ \

\, \

\.-Drill this : ·, hole in field \'',f!SSembly

\ ·:y-, --.: ___ j,•-

;_ Rodiol

SEAL OLAMP SEAL BAR STEEL 855

ONEREQ'o.AS SHOWN- MARK/044·3/R ONE REQ'D. OPR HAND - MARK/044·3/L 12 REQ'D. AS SHOWN· MARK /044-32R /2 REQ'D·OPP. HAND - MARK l044·32L ONEREQ'D.AS SHOWN· MARK /044·33R ONEREQ'D.OPP.HAND - MARK l044·33L

t< -- ----- ------ - ---- - • - -- - - ---- --- - - ---- -- - -- ---- - - - --->f

! e' 5 spc. ,i ;,.•,t-e 21 : r.:1r. -----<1F --- · -------- ---- · ---· -- ----- ----- ---r-' 1 I • r + + -+ -t------ i I

A Dia. countersunk holes./ <JF ® SEAL BAR

BRASS J7 30+4 REQ'D. -MARK /044-34

,·lj Dia. holes to be i drilled in field : assembly. See notes

/l+D ,·Extra strong pipe- - • z ·- It

"', k- - - ---)1,1 ·-·q·-1 I o I: : !~: ... Bar /t-4 BRASS·-~i?Cf

: k" "-· 9

7-, __ :

-

@ SECTION C·C SECTION F-F SPAOER

\

-J.,1J Flot head machine screws with hex. nuts, standard washers and i cotter key, BRASS.····----.

Seal bar 34 ·-

STEEL 196 +4 REQ'o.-MARK 1044-36

,·Heads of screws must be / f, below sl!flfoce

' I ,,-2/-At joint in seol bar

_j~.,. ,-Seal ,-Pier face tine : ,:': ____ /. ____ _

J, Ji Hex. head machine bolts : STAINLESS STEEL C78

(!8'11, cr.,8'11,Ni}wiffl hex. nuts STEEL and I-standard wrought washer.

' :"' ·~ I(>

: i , .. ,._ \,\',, -·---· ... \'

\ \

\ \

,·Radio!

', ·,'\, V'\_ ::.' ___ j .

SEAL

f Ups_treom , , : Skin pf. "•, • I /°' I ·-->1 ...,_ _______________________ ,_

SIDE SEAL ASSEMBLY ( Typicot Section)

Furnished by the Government See owg. J28·D·I046

f Ups_treom , skm pl.-···-----

Seat, continuous. Furnished by the Government. See _, owg. 328-0-1046·--·-··----

,-Top of' sill / plate

' '

BOTTOM SEAL ASSEMBLY (Typical Section} :::0

(1)

-o"l"I o­-,G> -+c :::C:::0-'< fT1 a._ (JJ\D rv (JJ

REFERENCE: FIGURE 138

,-Bross bar I

Seal toe-, \ ___ Seol 11.99 inches long. ' .nrw: ... ,, Point of contact of dial gages.------:

Outward

Lood,opplied by Universal Testing Machine.

1<----3~J _____ ... ~;.--Upper clomp plate. ' 'l:J I!, 1

,-,--,----,----,---r--,----.--r----w---P----10000

I I I I I I I I I .,.,,......--: I 13000

~---I I I I I I I :7"1""" I I I 18000

r '-seal stem:" I I I I I ..,......I I I I I I I 7000 (/) \

'~Lower cl amp plate. 0 z

.11 I I I I I I I I I I I I I I I I ~I I I I I I I I I 6000 ~ ~

.1 o I I I I I I I I I I I I I J.....--"'=i I - I I I I I I I I I I 5ooo ~ 0 Load vs. Stem compression-"''

~ :::1 I I I I I I I I !d?t] I I l;bt:J kl··Mox:goge:trove:I I 1:: ~ ::, 0 (/)

~ -07 1 I I I I I I :7f I I I I I I %/ I 1-- I I I I I I I 12000

u z 7 .06I I I I I ~ I I I I I I I A/ 1..,-C: I I I I I I I I I I 1000 I-

~ .o5 I I I ---1 I I I I I I I I AL' .,r= I I I I I I I I I I I o Ii.I > ~.041----+----+--~--+----+--~--+----+--~---+:~~~t-----+---+-------it-----+---+-------if----+---+-------if----+---+------i

' ... ' ... ' ~ ... ', ... _ ...... _-Gage No.I left I

1- .03. ...... --- -Gage No. 2 center> Facing brass bar.------------~ ----- -Gage No. 3 right j Ii.I (/) .02 t----+---+--l-----+---+--l-----+-~.-.+--,,~t---w--+---+----,l------+---+-----,~-+---+-----,~-+---+-------1~-+---+------t

.011 I I I I I ~:A' I I I I I I I I I I I I I I I I I

ol -1 I I I I I I I I I I I I I I I I I I I I 0 .01 .02 .03 .04 .05 .06 .07 .08 .09 .10 .11 .12

SEAL STEM COMPRESSION-INCHES

Reporttiyd.323 FIGURE 20

NOTES Seal toe moved outward. There seems

to be three components to the toe movement.

I.

2.

I Since bulge at "A· cannot form,toe

tended to turn /.7

I ff ) •• pl

Since there was a restro in in g frictional force Ft acting over length '1L" of lower clomp plate and none above on upper clomp plate, toe tended to turn.p.

3. -<-+7 Load l

Stem tended to bulge at·~·. Left side was free to move, pushing toe to left; right side was not free to bulge, pushing toe further to left. This component probably was a major one.

4. The seal toe movement was based upon approximately a one foot length of seal clomped flot,ond does not consider the effect of the seal clomped to a large radius (40 feet, Figure 2).

RADIAL GATE SEAL TESTS MOVEMENT OF SEAL TOE OF THE ANGLE SIDE SEAL DUE TO COMPRESSION OF SEAL STEM

(A) View of the angle seal with a brass bar plus a rubber sealing flap.

(B) View of the angle seal with rubber removed from the lower leg and a brass plate added.

RADIAL GATE SEAL TESTS

Views of the Angle Side Seal with a Brass Bar plus a Rubber Sealing Flap and with a Brass Plate.

FIGURE 21 Report Hyd-323

,!- ,a-Ne cap screw and nut spaced @ 6"centers.~,

' ',,

d.323 Fl GU RE 22

--Brass to rubber bond preferred .

RA(;)IAL GATE SEAL TESTS ANGLE SI DE SEAL

·w1TH BRASS PLATE ADDED

REFERENCE: FIGURE·21A

NOTES

. Rubber flap--.. ~ FLOW-~

I. 11 S11 increased from ,~-inch at zero head to ,!-inch at 190 feet head. . '

Wall plate:.--:\. ' --~P----Seal gap . . A

I I

2

!.~ 16 ~/ V ~ k,,rMax. lab.

/I ? ,, head. C I C I

1 I *' ' , <J I I I I I I I I I 'I / I/ S< J< ,f ,<> > I, . 3 I I I I I < <1<1/V,Y,<, -a• •• ,, • ,,, ,

< I < I

. I I -<I, ,, en I I I I -LI.I I I :J: Ji-1 I I I I I o 16 z

R~ob~eef~ f~~fh~~~c:0/v:: .. °-1-~ .. [A7')'~;r;[7[7'j7}7~)t';l7VY:t>t';f7[7l7'}?1 I Y I I / ...,., I I I I I / Lb/VXA 7 L.,,

L Llcv,.vA/1717 I I I I I I ' , ;II' 'I/_. v ,r ,4 , I, , , , , , J< ,r ,4 - , Cl. -4 I I 7 I < I,< Vf 7'1 7 17 7 <1 < Ji ,,

« I I I r I r b' V ,r ,4 , , , C!> I I I IA, , .,.J .! I I I I I I Cl: 16 l&J Cl)

~I I I I I I e ::A",'1/1/ VY ,r ,<J ,<1/1/ V ::V ,f ,<J·/1/ V 1~ I I I ¢ I I I I I I I

.~ I I , . :k1Sf7'1741'0'7~v4'44'Sf0~ I ·'t--rR~ob~iegrh~'~tt~ii: ;u0:v!~ 01 , , , •

OF< I< K £ 0 <I <I< I< K 4 ,,. < I < ~ I I I I I I I I I I I 30 40 50 60 70 80 90 100 110 120 130 .140 150 160 170 180 190 200

HEAD- FEET OF WATER

RADiAL GATE SEAL TESTS HEAD LIMITATIONS TO OBTAIN. A SEAL OF THE ANGLE

SIDE SEAL WITH BRASS BAR AND RUBBER FLAP AD.OED

:::0 CD

:-0 0 ., -+ I

I'< p. (I,! I\) . (I,! .,, Ci)

c:: ::0 ,,, l'I) (1,1

I 2

l. 16

3 ' 1' fc Cl)

l&J I ::c 5 0 Ji z j - -1 I I o..-<l 4 I (!)

..J 3 J <l ii f l&J Cl)

' I . 1'

..

·I ii

0 2

-t-

-ci. REFERENCE: FIGURE 218 NOTES 0

1- ..... 1. No head readings could be obtained

0' at seal gaps less than ¼-inch. -0 -Q)

~ [ ~- F~W __ .

_st__ ____ . . . E Wall plate

' j 1 ,

-~ •'

./_ ,.

--- -Head at which seal unsealed ~ ,/ . .,,,.,,

·-,_,

,,,,,-~ .-

---~ ,,,,-< --- •,

---. .

. . ----~ ' --Head at which seal sealed. -

------....,,,,,,,,,.

I

------------- ,•

-

4 6 8 10 12 14 16 18 HEAD-FEET OF WATER

RADIAL GATE SEAL TESTS . . SEALING AND UNSEALING. HEADS OF THE ALL

RUBBER ANGLE SIDE SEAL WITH BRASS PLATE ADDED

·J r

.) ~

:0 CD 'a 0 ., -+

• I

:I: 1-< fi (,a I\). (,a 20. ! "Tl G)

C ~

"' I\) .,.

(A) Sealing position at 40 feet head, The seal water load was carried to the wall plate (rig floor) by the upstream end of the brass plate and by the rubber sealing lip of the seal.

(B) Sealing position at 190 feet bead. Non-representative of field pressures due to flow restriction at area A-­tended to separate brass plate from seal, Brass plate became horizontal at 100 feet bead.

RADIAL GATE SEAL TESTS

Operating Views of the Angle Side Seal with a Brass Plate at 1/2-inch Seal Gap.

FIGURE 25 Report Hyd-323

Wall plate----'

FIGURE 26 Report Hyd. 323

NOTES 1. Approx iniate ly one-third of sea I

wa_ter load across the ,f._dl­mens Ion Is ·corr ied by the gate; the remainder of water load is ct1rr ied to .the wan plate.

2.Brass pipe may be slightly curved during assembly to fit gate curvature.

·3.At higher heads, seal leg will. tend to curve, and thus re leave the frictional drag of rubber sealing lip on wall plate. ,

4.Drowlng Is to full scale.

, 11 - I}' - --->t

I I I I ~II

!----31 I I

Holes, 1½'' Centers

, ¾"' x-s trong brass pipe , / . 12 3 11 w a 11 th i ck n ess ..

111 I ·+· I d f I . f .. ---- 4 n1 10 e ect1on o seal on wall plate.

I I : I I I 11

I ->r· r<-O.I I II t

->-' 0.5· <-

RADIAL GATE SEAL TESTS PROPOS.ED SIDE SEAL WITH A BRASS PIPE

AND A RUBBER SEALING LIP •

, I

, , ,

Re ort H d.323 FIGURE 27

1.---.... __ }/rTest gate leaf

I I I I

F I• /---- our 2 • 13NC

---Four .i"-13NC ,," 2

/-__ -----Rubber seal

--------+--~..-1 T 7. /-- WO 8 -9NC

--

---- -----1 '~Four ½"-13NC l .,,.,,,'

---Downstream clamp plate.

. . ,,.--?-, Upstream clamp plate extended/ '

---;,.- FLOW

3xf-inch Angle iron--,

, , ,

, , , ,

/Circular cut ,fix 3-inchs wide,at angle / iron i. This cut represents·a / depression in seal seat (si II plate). I . I ,

I I T 511

,-- WO 8 -IINC I I

,-Test rig t floor. I I

SIDEVIEW-ASSEMBLY-12 INCHES WIQE

t

I · 0 2 3 I I I I I I I I I I I

SCALE OF INCHES

RADIAL GATE SEAL TESTS ARRANGEMENT FOR HYDRAULIC TESTS OF BOTTOM SEAL

I

(A) Seal compressed 100 percent at 40 feet head. The seal was deformed upstream under the upstream clamp plate. The seal is outlined in white line.

(B) 3/4-inch gap, 190 feet head. The seal is deformed slightly under the downstream clamp plate.

RADIAL GATE SEAL TESTS

Operating Views of the Soft Rubber, Type A Shore Durometer 38, Gate Bottom Seal

FIGURE 28 Report Hyd-323

a .. ., 0 ., '

l l I

T l I AMOUNT OF SEAL COM PRESS ION- I NCH ES= Ti T i ¼ le

Ratio of Force regu!red to compress 69 duro.seal. Force required to compress 38 duro. seal- l.6 0 l.67 2042·33 2·56

NOTES I. WET SEAL SEAT

x Increasing Force ~ Decreasing Force

2. ORY SEAL SEAT o Increasing Force a Decreasing Force

3. Doto obtained from Universal Testing Machine.

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A. HARD RUBBER-69 DUROMETER TYPE A SHORE

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B. SOFT RUBBER-38 DUROMETER TYPE A SHORE ~

RADIAL GATE SEAL TESTS FORCE REQUIRED TO COMPRESS RADIAL GATE BOTTOM SEAL

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