Download - ROLON DRY GAS SEALS PPT.ppt
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ROLON Gas Seals
Gas seals and their application for maximum
reliability
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Rolon seals Turbomachinery
Products & Operation
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DGS Application Range
ROLON DGS
Operating Range
Temp:-1! to "#1$%&
Pressure:to $! 'arg
Speed:to (!!m)s
Shaft:to ##!mm
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*ype (+A* Seal Design ,eatures
&ompliant stationary face design proiding
maximum flexibility
Optimum slo. roll capability
Logarithmic spiral orbi-directional design/
*ungsten carbide or silicon carbide rotating seat
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*ype R(+ A* for duties to +( bar
&arbon seal faces
0lastomeric O2 Ring
Secondary seal
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*ype (+ 34 for duties to (!! bar
5eyed 'alance dia/polymer
&arbon seal faces
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*ype (+ R034 for duties to #$! bar
&ranite seal faces
AD& 'alance dia/polymer
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6ohn &rane
Range of Standard gas seals
High Speed
Re-injection uties
LNG type Duties
Type R28 XPType R28 XP
Type R28 EXPType R28 EXP
ROLON seal dominate High Technology MarketROLON seal dominate High Technology Market
sectorssectors
Type R28 ATType R28 AT
&ore business
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*ype +( 'arrier seal
!enefits
Pro"en # reliable design
$% years field e'perience on
a (ide range of applications
)'cellent protection against
Oil ingress into *S
limited +, onsumption
+o e'plosi"e mi'ture ris. +o process gas to bearing
housing
)n"ironmentally /riendly
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&ontrol 4anels 7 S04ro Systems
&omplex Gas Seal control panel
7 booster for '4 8orn 9ountain
S04ro system for '4
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Gas seal performance progress
ATTri
ple
ATTri
pleXP
Tande
m
XPTande
m
XPTriple
XPTriple
XP!
ad
XP!
ad
EXPT
andem
EXPT
andem
"#ranite$
"#ranite
$
A%#
&
A%#
&
ATTandem
ATTandem
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RO0O+ S)10 Turbomachinery
Seal design for ma'imum
reliability
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RO0O+ S)10Turbomachinery
System design for ma'imum
reliability234 of seals fail prematurely because of
contamination
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0nsure the gas is clean and dry
Process Gas
,: ,:
,:L*0R
9OD;L0
4RO&0SSGAS
03*0RNAL
GASFiltered Process Gas
/or e'tended reliabilityclean # dry seal gas is the
5OST important
Gas should be filtered
to around 1 micron
&oalescing filters canbe used to dry the gas
8eaters can be used to
proide superheat
8eat tracing should be
used to preent heatloss
S04ro type systems
can be used to proide
static gas flo.
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A, 1$($< Gas &omposition
!
(!
!
+!
1!!
1(!
1!
1
1+!
-1+! -1
*emperature =&>
4ressure
=bar>
de. line bubble line Adiabatic 0xpansion 8ydrate &ure =1? 8(O>
4hase Diagrams
hec. adiabatic e'pansion
hec. hydrate formation
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;sing a thermocouple to measure seal
temp
End User in Alaska5.687 Seal on Suction End6.929 seal On Dischargeein!ection dut" #ith $2S
%25 &ar #orking 'ressure%5( &ar )a* 'ressure++75% r')O'erating since August 2(((
Specify a Thermocouple to
monitor seal temp O)5 (ill need to pro"ide
e'it gland
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A, 1$($
-$@%& De. 4oint
!
(!
!
+!
1!!
1(!
1!
1
1+!
-(!! -1$! -1!! -$! ! $! 1!! 1$!
*emperature =&>
4ressure
=bar>
de. line bubble line Adiabatic 0xpansion 8ydrate &ure
Gas from Sid Seal Gas D0 Seal Gas ND0
,ield Gas Analysis
- 4lot operating conditions
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A, 1$($
-$@%& De. 4oint
!
(!
!
+!
1!!
1(!
1!
1
1+!
-(!! -1$! -1!! -$! ! $! 1!! 1$!
*emperature =&>
4ressure
=bar>
de. line bubble line Adiabatic 0xpansion 8ydrate &ure
Gas from Sid Seal Gas D0 Seal Gas ND0
,ield Gas Analysis
- 4lot operating conditions
,easured o'erating
'oints -ro) Data ca'ture
s"ste)
redicted #orst case
e*'ansion line
Actual #orst case
e*'ansion line 'assing
through li/uid region
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Reie. gas properties
0hite de'osits -ound across 1 seal -aces
3aused seat and -ace to stick together
3lear e4idence o- li/uid conta)ination
Area anal"sed
Element Wt%
C K (9.62
O K (9.(
AlK ((.++
SiK ((.%2
S K 8(.55
0hite de'osits identi-ied as de'osition o- ele)ental sul'hur
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RO0O+ S)10 Turbomachinery
- reate a clean en"ironment for the
seal under allconditions
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&lean seal gas inBection
C Normal operation
Process Gas
,: ,:
,:L*0R
9OD;L0
4RO&0SSGAS
03*0RNALGAS
Filtered Process Gas,lo. path of
seal gas under
normal dynamicoperating
conditions
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,: ,:
Filter No differential pressure
no flo.
Seal contaminatedby process gas
&an Lead to Seal
hang up on start-up
No seal gas flo. at settle out conditions
Settle- out &onditions=4ressurised standstill>
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S04ro -Superior by design
Application deeloped gas circulator
:nbuilt safety and monitoring features
4lug and play operating philosophy
Auto start ) stop functions
Onboard logic and control
SEPro - Heated filtered seal gas on demand duringshutdown and periods of low differential pressure
ensure the seal is constantly maintained in optimumcondition and readiness for re-start.
Seal environment solutionsSeal environment solutions fromfrom
6hen the unit is statically pressurised
there is no seal gas flo(
7T e'pansion causes cooling 1ny li8uids or hea"y ends are deposited in
the seal
This results in serious contamination and
premature seal failure The S)Pro system pro"ides flo( to .eep
the seals clean and dry
Pro"ides major increase in seal life
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Seal environment solutionsSeal environment solutions fromfrom
HEATER
MODULE
PI
FIT
N2
PURGE
VENT
VENT
TE
PI
VENT
PI
GAS BOOSTER
CONTROL
MODULE
PI PI
MONITORING OUTPUTS
AIR
SUPPLY
STATUS
PANEL
S
FROM MAIN SEAL GAS FILTERS FEED TO DRY GAS SEALS
FILTER
NC
NC
NC
NC
S)Pro /lo( diagram
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Seal environment solutionsSeal environment solutions fromfrom
S04ro - 9ore than Bust another filtered gas pacage
Maintain optimum seal condition
Increase compressor availability
Prevent liquid contamination at seal faces
Prevent process debris contamination
Increase dry gas seal M!"
#$%E material compatibility
$E& and PE' options
Experience has proven that process contamination is the
biggest single contributor to premature gas seal failure
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RO0O+ S)10 Turbomachinery
)nsure the O! seal is
ade8uately alarmed
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0nsure the O' seal is adeEuately alarmed
,: ,:
#( SE%)#'$*+
"I,E* M)',E
4&F
Filtered N2Secondary Gas
,LAR0,:
4:
,O
4:
,O
,:
Process Gas
,: ,:
,:L*0R
9OD;L0
4RO&0SSGAS
03*0RNALGAS
Filtered Process Gas
Process + N2Gas to Flare
0nsure O' seal is alarmed
L4 in 4F O' seal failure
84 in 4F :' seal failure
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RO0O+ S)10 Turbomachinery
)nsure ade8uate separation
from bearing oil
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*ype +( 'arrier Seal - ,unction
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F0N*
N2
to Atmosphere
0nsure adeEuate 'arrier Seal Supply
,: ,:
#( SE%)#'$*+
"I,E* M)',E4&F
Filtered N2Secondary Gas
,LAR0,:
4:
,O
4:
,O
,:
Process Gas
,: ,:
,:L*0R
9OD;L0
4RO&0SSGAS
03*0RNALGAS
Filtered Process Gas
Process + N2Gas to Flare
0nsure 'arrier gas
supply pressure is
adeEuately controlled
Should be controlled
to !/# to !/$ bar 'arrier Seal leaage
changes .ith time
:nterloc .ith
bearing oil
P9 P9
arrier seal 'ressure
controlled #ith 3s
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Type 2, !ushing pgrade - the Type 2; !arrier Seal
:mproed 4roduct - *ype +# 'arrier Seal
&arbon Segments
Garter Spring
ae Spring
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Type 2; !arrier Seal
Ne. Deelopment - *ype +# 'arrier Seal
Oilside
Dr"as
Seal
side
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*ype +# 'arrier Seal
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RO0O+ S)10 Turbomachinery
)nsure The O)5
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0nsure the compressor is tested .ith
Bob panel
&omplex Gas Seal control panel
7 booster for '4 8orn 9ountain
The O)5
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Specification for maximum reliability
- Summary
se polymer seals in place of O rings
)"en at lo( pressures ?P seal sho( benefits
)nsure the gas is clean and dry
se coalescing filters to remo"e li8uids
)nsure ade8uate draining
Heat trace lines @ insulate
se S)Pro system to pro"ide seal gas under shutdo(n
Protects the seal from process gas (hen the machine is shutdo(n
se heaters to increase margin o"er li8uid formation
se a thermocouple (ithin the seal to monitor temp
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)nsure ade8uate O! seal failure sensing onfirm test conditions reflect duty
1'ial mo"ements Transient mo"ement Aacuum testing
Temperature transients onfirm seal "endor test conditions reflect duty
0ea.age monitoring )nsure flo(metres are correctly siBed hec. shutdo(n flo( rates
!arrier seal gas system )nsure ade8uate barrier seals are pro"ided
1de8uate pressure control C3=; to 3= barD onfirm failure sensing Pro"ide bearing oil interloc. onsider e'plosi"e mi'tures # including failure condition
Specification for maximum reliability
- Summary
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6ohn &rane Gas Seals OfferH-
)'perience 5ore e'perience than the other gas seal "endors puttogether
*lobal ser"ice 0ocal e'perience and support 0ocal repair ser"ice
1ll to a guaranteed global standard
Technology Pro"en high performance products specially selected for
specific re8uirements
ROLON S0ALS orld leaders in Dry Gas Seal
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ROLON S0ALS C orld leaders in Dry Gas Seal
*echnology