design& manufacturing of explosion chambers

7/24/2019 Design& Manufacturing of Explosion Chambers

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Designing and manufacturing of explosion

chambers for scientific research and

explosive working of materials

A. Shtertser*, . Stoyanovskii, B. Zlobin, Yu. Meshcheryakov, Yu. Skornyakov

Design & Technology Branch of Lavrentyev Institute of Hydrodynamics SB

RAS

Novosibirsk, Russia

[email protected]

!"NM #$%&'

(raco), "olan,

May $+#%, $%&'


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-ocalization o e/0losion actorsAny e/0losion results in a00earance o shock )ave, seisic )ave, to/ic

etonation 0roucts, an, soeties, lyin1 ebris 2explosion factors).

3here are ierent acilities or localization o e/0losion actors4 natural caves

in ountains, ines, structures ae o reinorce concrete, an metal

Explosion Chambers (ECh).

Aon1 !(h there are chabers esi1ne for one explosion an chabers

ae for a great number of shots. 5irst ones are 0ur0ose or

trans0ortation o e/0losive char1es, say ro the 0laces )here terrorists 0ut

the 2rail)ay stations, air0orts, city streets, etc.6 to a s0ecial site or

eliination. Such !(h can resist only one unauthorize e/0losion. Secon

ones are esi1ne or ulti0le e/0losions an are use in research or intechnolo1ical a00lications.

3here are 1oo any co0anies an institutions in the )orl )hich can

0rouce etal !(h. 7ierent oiications o !(h )ere built in Russia, 8SA,

9erany, (hina, South :orea, 8kraine , an other countries.


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"ublications on the sub;ect

Available in English:. !. B a k e r, 3he elastic#0lastic res0onse o thin s0herical shells to internal blastloain1, ?. A00l. Mech. $, &'' 2&%6.

. !. B a k e r, ". A. ( o /, ?. ?. : u l e s z, R. A. S r e h l o v, ". S. > e s t i n e,

!/0losion Cazars an !valuations, !lsevier Science B.D. 2&E6.


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aves, %, $, $$$#$$ 2&'6


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Available in ussian:


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"rouction o !/0losive (habers in -FC SB RAS

7esi1nin1 an anuacturin1 o etal e/0losive chabers 2!(h6 hasbe1un in -avrentyev Fnstitute o Cyroynaics SB RAS 2-FC SB

RAS6 in %#ties o the 0ast century, ;ust ater its establishent.

ri1inally !( )ere ae or research )ork in the iel o 0hysics o

e/0losion, an later on or inustrial a00lications. 3he 0rocess o !(h

esi1nin1 )as al)ays closely associate )ith investi1ation o stresses

arisin1 in !ch shell uner 0ulse loain1.

3he ean on inustrial !(h has increase si1niicantly in %#ties

Since & an u0 to no), about &%% e/0losion chabers o various

esi1n an 0ur0ose have been anuactureQ the e/0losive char1e

value varies )ithin the ran1e ro &+% 1 to & k1 N.


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5eatures o !/0losive (habers

3he !(h esi1ne in -FC SB RAS have a lon1 service lie

2&% thousan shots an ore6Q they co0letely isolate all

explosion factorsQ can be ounte in laboratory roos

an inustrial 0reises, an, as necessary, can be

isasseble an trans0orte to a ne) 0lace o

e/0loitation.

Bein1 cobine )ith s0ecial 0uriication evices, !(h

enables to neutralize to/ic co0onents o e/0losion

0roucts.


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&6!Guations or estiation o chaber ass

an shell )all thickness or the co0ose

shellQ

$6 3he line o evelo0e an anuacture

!(h.

5urther to0ics


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(o0ose shell an its 1eoetrical 0araeters

Ris the raius o the

cylinrical 0art an s0herical

cover, His the cylinrical 0art

len1th, is the shell )allthickness. 3he e/0losive

char1e o ass an s0eciice/0losion heat !is situate in

the shell center.

,he aim is to calculate the

shell mass mand in

conition o 1iven allo)able

stress 2cyclic stren1th othe shell aterial6.


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5orulas

3 3 34( )

3S

m R R = + 2 2( )

Cm H R R = +

0

2

2 0

1

2 1 M

ME QK

R a

=

( ) = 1221( ) ( )

+=

121122

m

R

HK

H =

2

2M

H

KK

=

+

is the ass o the e/0losive char1e, k1Q !is the s0eciic e/0losion heat, ?Kk1Q "

is the "oissons coeicient, #is the Youn1s oulus,$is the ensity, a%is the

soun velocity o the shell aterial.

% is the a/ial stress in the cylinrical 0art o co0ose shell 2it is eGual to the

eriional stress in the sei#s0herical cover6, an is the circuerential stress

in the cylinrical 0art o co0ose shell.

mis the allo)e eGuivalent stress 2the 0araeter o aterial cyclic stren1th6.

)()()( RmRmRmCS

+=


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Moiications o !/0losion (habers an

their a00lications

A nuber o !(s have been evelo0e or ierent technolo1ical a00lications

an researchin1 activities.

esearching chambers are designed for relativel- small explosive

charges (#' 5 &'' g)/ 3hey have s0ecial )ino)s or o0tical shootin1 o ast

0rocesses an are usually e0loye or investi1ation o ne) e/0losives,e/0losive treatent o sall sa0les, synthesis o ne) aterials in sall

aounts, an etc.

*ndustrial (technological) chambers are designed for bigger explosive

charges (& 5 #$ kg) an are 0ur0ose or 0rouction o bietal 0arts,

e/0losive harenin1 o etal articles, 0rouction o ne) aterials bye/0losive synthesis, an so on. Fnustrial chabers also can be use in

research )orks.


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Research chabers )ith s0herical an co0ose shells


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Research chabers

!/0losive chabers :D#%,$ or $%% 1 3N3 2)ei1ht &, t, overall

iensions &E%% / &$%% / &% 6.


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!/0losion chaber :D#%.&+

3he researchin1 chaber TD#%.&+

esi1ne or the e/0losive char1e o

a/iu %.&+ k1. 3he e/ternal iaeter

o the cylinrical 0art o the shell an its

hei1ht are eGual to %.+ . 3he chaber

has a char1in1 hatch )ith the iaeter

o %. , E easureent in0uts ant)o o0tical )ino)s o %.%E in

iaeter. Fnsie the chaber, there is a

)orkin1 table, its iaeter is %.$+ .

Ater each e/0losion, the chaber is

blo)n )ith the co0resse air 2%.

P"U6, )hich is 0rovie by t)o valves.

3he chaber ass is E%% k1. Ft is easy#serviceable an can be installe in rather

sall laboratory roos.


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!/0losion chaber :F"#%.$

3he :F"#%.$ chaber is intene or the nanoiaon

synthes in sall aounts or research 0ur0oses. Fts ae o

stainless steel. (haber has char1in1 hatch an attachent

or 0rouct collection.


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!/0losion chaber 7D:#%.$

Ft is the s0ecial research chaber

ae or Siberian (enter o

Synchrotron an 3eraCerz !ission

2Novosibirsk, Russia6. Ft is esi1ne

or %.$ k1 o C! char1e, the internaliaeter o cylinrical 0art is %.E ,

the iaeter o t)o char1in1 hutches

is %.+ . 3here is a 0neuatic

o0enin1 K closin1 echanis,

chaber ass is $. t.

Synchrotron eission enables to 1etthe uniGue inoration on the ensity

istribution in etonation 0roucts

behin the etonation )ave ront.


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Fnustrial chaber :D#$M

!/0losion chaber o vertical ty0e :D#$M is

esi1ne or a/ial C! s0herical char1e

ass o $.% k1, an lat char1e ass o &.

k1 3N3. 3he chaber )ei1hts &%.+ t. Fnner

iaeter o the shell cylinrical 0art &. Q

)ork table iaeter %. Q inner hei1ht

easure ro the table to shell to0 &. .

3he chaber can be ae )ith t)o or our

o0tical )ino)s. >hen )ino)s has

trans0arent inserts the a/ial e/0losive

char1e ass is %.+ k1.

:D#$M chaber can be use or e/0losive

)orkin1 o aterials an or estruction o

aunition, such as etonation uses.


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Fnustrial chaber :D#+

Another vertical#ty0e chaber

TD#+ is esi1ne or + k1 o C!

an )ei1hts about '%t. Ft has

overall 0lane sizes '. V $.E

an hei1ht .' in the close

state an '. in the o0en state

3he )orkin1 table o & iniaeter enables to treat Guite

lar1e etal 0ieces or several

articles to1ether. Since &&,

ore than &%% thousans

bietallic )ork0ieces o 0lane

bearin1s or iesel en1ines )ere

anuacture . (haber isinstalle in the 5actory not ar

ro Novosibirsk 2Russia6.


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!/0losion chaber :D9#E

3he chaber o a horizontal ty0e :D9#E )as

esi1ne or rail)ay 0oints e/0losive

stren1thenin1. 5or about '% years this

technolo1y has been bein1 utilize in

Novosibirsk rail)ay 0oint actory.

Since &+ the chaber :D9#E has been

o0eratin1 in Norilsk echanical actory . Fn

the chaber, bietallic current leas totitaniu electroes are anuacture by the

e/0losion ethoQ these leas are use in

electrolysis cells or nickel, titaniu, an

other etals 0rouction. 3he current lea

0resents a t)o#layer 2co00er K titaniu6 tube

)ith the e/ternal iaeter o about +%

an len1th u0 to &. . 3he chaber

0erits anuacturin1 &$ tubes at one

e/0losion.

3he :D9#E overall sizes )ith the 0ulle out )ork table are4 the len1th is &.' , )ith

$.+ , hei1ht $.$ . 3he cylinrical shell is +. in len1th, its internal iaeter is &.

. 3he chaber ass 2)ithout ventilation syste6 is 'E t.


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3he horizontal#ty0e

chaber :D9#&

0resents the ouble 2by

len1th6 chaber :D9#E.

3he chaber len1th in

an o0en state is $.$ ,

its )ei1ht is t. 3hechaber )as utilize or

eliination o s0ecial

0yrotechnic char1es.

>ithin a00ro/iately t)o

years, about &+

thousan e/0losions

)ere or1anize in thechaber, )ith & k1 o

cobustible i/ture

estroye in each cycle.

!/0losion chaber :D9#&


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!/0losion chaber Ala#$

3here are other oiications o the !(hs. 5ore/a0le, the chaber Ala#$ or $ k1 o e/0losive

char1e )as evelo0e es0ecially to 0rouce the

iaon#1ra0hite i/ture ro carbon#containin1

e/0losive char1es. 3hese chabers are use or

nano#size iaons 0rouction 2ultra#is0erce

iaons6. 3he chaber ass is .E t, its overall

0lane sizes are $.% V $.+ , hei1ht '.+ , inner

volue is $ . 3he )orkin1 cycle is &% O &+ inutes,

hence ore than % k1 o the e/0losive substance canbe treate urin1 one )orkin1 shit.


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!/0losion chaber Ala#$


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(onclusion

Metal !/0losion (habers eectively isolate all

e/0losion actors 2shock )ave, seisic action, lyin1

ra1ents o e/0eriental or technolo1ies asseblies,

etonation 0roucts6. ur any#years e/0erience sho)s that !/0losion

(habers can be successully use in research )ork an

in 0rouction 0ur0oses 2e/0losion )elin1, e/0losion

stren1thenin1, ne) aterials synthesis, aunition

eliination, etc.6


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3hank you or your

attentionW

design& manufacturing of explosion chambers

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