MECHANICAL SEAL Global Solutions, Local Service. Pl Pl · PDF fileMECHANICAL SEAL • Vents...
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PIPING PLAN 2 Pump Jacket PIPING PLAN 23 Cooled Seal Recirculation PIPING PLAN 52 Circulation with External Buffer Fluid Tank OO"�t ·- • -·- L "'" ,or - FUUꝃK - -- � -� MP =•• L� PIPING PLAN 62 Quench Global Solutions, Local Service. • Use with single seal or dual seal to control seal chambet temperature • Maintains or elevates box temperature to prevent product solidif i cation with polymers resins , tars • Lowers seal chamber temprature in hot environme r S • Common heat transfer fluids: -Water -Thermal oils - Steam • Close tolerance throat bushing is required for optimum efficiency • Use with a single seal and pump mechanism • Minimizes heat exchanger size and coolant water usage • Cools seal whil e pumping hot and/or volatile fluids • Use with close tolerance throat/restriction bushing • Venting is important """ ccw cw l�»l • Use with a dual seal • Low pressure buffer fluid, 10psig (0.7 bar g) minimum • Buffer fltJid should be clean, compatible and lubricating • Buffer f l uid pressure lower than seal chamber pressure • Seal venting is important • Use long sweeps in tubing bends • Use with a single seal • Prevents coking, crystallization • Low pressure only • Cleans atmospheric side of seal faces • Common quench fluids: - steam -water -nitrogen PIPING PLAN 11 Discharge Recirculation - PIPING PLAN 31 Discharge Recirculation with Cyclone Separator I PIPING PLAN 53A Circulation with Pressurized External Barrier Fluid Tank - -� • -�· L -�I 6�F H =�· -� "'""" PIPING PLAN 74 Externally Supplied Barrier Gas • Use with single seal or dual seal • Increases circul ation • Increas es pressure in seal chamber • Clean fluids only - Solids can erode s eal • An orif ice can can be used to reduce flow and pressure • Use with a single seal where fluid contains some ab1asives • Cools seal • Increases seal chamber p1essure • Density of solids must be significantly greater than fluid • Use caution with high viscos i ty fluids • Requires pressure differential • Will not remove micron size particles • Use with a dual seal • Pressurize barrier fluid 15·30psig (1·2barg) over maximum seal chamber pressure • Barrier fluid should be dean, compatible and lubricating • Provides clean fluid 10 the inboard seal faces • Use long sweeps In tubing bends r • Use with a non-volatile gas • Provide gas at 25 psig (1,7 bar g) above seal chamber pressure • Venting of the seal chamber may be required prior to start-up • Use Nitrogen, Carbon Dioxide or Compressed A i r • Zero emmissions and leakage to atmosphere MECHANICAL SEAL Pl Pl NG PLANS PIPING PLAN 12 Discharge Recirculation with Strainer PIPING PLAN 32 Clean Flush PIPING PLAN 538 Closed Loop with Heat Exchanger and Accumulator • Use with single seal • Cools seal • Increases pressure in seal chamber - Throat bushing optional • Clean fluids only - Solids ccm erode seal - Solids can dog seal when bushing is used • An orifice can be used to reduce flow and pressure • Use with a single seal • Provides clean flllid to seal • Prevents clogging • Acceptable flush fluids - Clean, compatible fluid -Water , ii compatible -Clean product -Downstream additive -Carrier solvent --- -- c � • Use with dual seals (l (T • ꝏ, 4400 GAS SEAL • Optional thermocouple • No foaming • Heat is removed by an ai1-cooled 0< water-cooled heat exchanger • cumulator sizing crucial • Maintains constant pressure on the circulation system IN GLAND CONTROL SYSTEM PIPING PLAN 13 Suction Recirculation PIPING PLAN 33H SpiralTrac'" Version D Type I PIPING PLAN 53C Heat Exchanger and Piston Accumulator -- l!U(f ·= 442 SPLIT MECHANICAL SEAL • Vents air and prevents dry run • Prevent5 dogging • lowers pressure in seal chamber • Cools seal • Reduces seal generated heat • Use caution with low vapor pressure liquids • Use with a single seal • Removes solids • Seal runs in dean fluid • Prevents clogging • Removes vapor from seal chamber • Preves dry running • No flush required • Optional thermocouple • No foaming • Heat Is removed by an air-cooled or water-cooled heat exchanger • Tracks product pressure in seal chamber • Maintains constant pressure on the circulation system PIPING PLAN 14 Suction and Discharge Recirculation (Vertical) PIPING PLAN 335 SpiralTrac'" Version F Type S PIPING PLAN 53P Circulation with Pressurized External Barrier Fluid Tank nu,o "" R10R �µ ' EC< ••• S10 SINGLE AND S20 DUAL STREAMLINE'M CASSETTE SEALS IDêL • Vents air and prevents d ,un • Use with single seal or dual seal • Prevents clogging • Cools seal • Promotes flow • Reduces seal generated heat • Use caution with low vapor pressure liquids • Use with a single seal • Removes solids • Seal runs in clean fluid • Prevents dogging • Prevents dry running ccw cw • Maintains constant pressure and liquid supply to the dual seal • Exteal water pressure is set at 30psig {2 bar g) over maximum seal chamber pressure • Initial tank level is set through the exteal warer pressure line • Pressurize tank to 25 psig (1,7 bar g) over maximum seal chamber pressure with a regulated gas pad, then isolate gas pressure • Tank is then charged With regulated exteal water pressure • System operat with a constant external water pressure 180 HEAVY DUTY SINGLE SEAL PIPING PLAN 21 Cooled Discharge Recirculation I PIPING PLAN 41 Cooled Discharge Recirculation with Cyclone Separator (I1 CT CITEDI * P PIPING PLAN 54DM Circulation with Pressurized External Barrier Fluid Source and Flow Guardian DP50 e CER f IN 280 HEAVY DUTY DUAL SEAL " • use with a single seal • Cools hot, volatile flLJids • Cools seal • lnaeases seal chamber pressure • An orifice can be used to control flow and reduce pressure • Use with close tolerance throat/restriction bushing • Use with a single seal where fluid contains some abrasi�es • Cools seal • Increes seal cmr prsure • Supplies cleaner fluid • Reduces clogging potential • Density of solids must be significantly greater than fluid • Use caution with high viscosity fluids • Requires pressLJre differential • Will not remove micron size particles • Use with a dual seal • Pressurize barrier fluid 15 • 30psig (1 - 2bar g) over maximum seal chamber pressure • DP50 provides inboard seal leak detection, pressure regulation and flow control • Barrier fluid should be clean, compatible and lubricating • Provides clean fluid to inboard seal faces PHONE: 618 9302 8400 FAX: 618 9302 6186 www.chesterton.com EMAIL: [email protected] www.pumpnseal.com
Transcript of MECHANICAL SEAL Global Solutions, Local Service. Pl Pl · PDF fileMECHANICAL SEAL • Vents...
PIPING PLAN 2
Pump Jacket
PIPING PLAN 23
Cooled Seal Recirculation
PIPING PLAN 52
Circulation with External Buffer Fluid Tank
OPTIO"�t ·-
• -·-
L"'" sw;,or
-BIIIFUl'I.UOOWIK
- --� .. -�
!'\lMP =••
L�
PIPING PLAN 62
Quench
Global Solutions, Local Service.
• Use with single seal or dualseal to control seal chambettemperature
• Maintains or elevates boxtemperature to prevent productsolidification with polymers.resins, tars
• Lowers seal chamber temp!!raturein hot environmer'\IS
• Common heat transfer fluids:-Water -Thermal oils- Steam
• Close tolerance throat bushingis required for optimum efficiency
• Use with a single seal andpump mechanism
• Minimizes heat exchanger sizeand coolant water usage
• Cools seal while pumpinghot and/or volatile fluids
• Use with close tolerancethroat/restriction bushing
• Venting is important
""" ccw cw
l�»l
• Use with a dual seal
• Low pressure buffer fluid,10 psig (0.7 bar g) minimum
• Buffer fltJid should be clean,compatible and lubricating
• Buffer fluid pressure lowerthan seal chamber pressure
• Seal venting is important• Use long sweeps in
tubing bends
• Use with a single seal
• Prevents coking,crystallization
• Low pressure only
• Cleans atmospheric sideof seal faces
• Common quench fluids:- steam-water-nitrogen
PIPING PLAN 11
Discharge Recirculation
-
PIPING PLAN 31
Discharge Recirculation with Cyclone Separator
I
PIPING PLAN 53A
Circulation with Pressurized External Barrier Fluid Tank
- -�
• -�·
L
-�I 6.IAAll�Fll!l[IJl,N>: Wl!H OPl!ON.1.1. =�·
-�"'"""
PIPING PLAN 74
Externally Supplied Barrier Gas
• Use with single seal or dual seal
• Increases circulation
• Increases pressure in sealchamber
• Clean fluids only- Solids can erode seal
• An orifice can can be usedto reduce flow and pressure
• Use with a single seal wherefluid contains some ab1asives
• Cools seal
• Increases seal chamberp1essure
• Density of solids must be significantly greater than fluid
• Use caution with highviscosity fluids
• Requires pressure differential
• Will not remove micronsize particles
• Use with a dual seal
• Pressurize barrier fluid15·30psig (1·2barg)over maximum sealchamber pressure
• Barrier fluid should be dean,compatible and lubricating
• Provides clean fluid 10the inboard seal faces
• Use long sweeps Intubing bends
g,=nr=iilc=;, • Use with a non-volatile gas• Provide gas at 25 psig
(1,7 bar g) above seal chamber pressure
• Venting of the seal chambermay be required prior tostart-up
• Use Nitrogen, Carbon Dioxideor Compressed Air
• Zero emmissions andleakage to atmosphere
MECHANICAL SEAL
Pl Pl NG PLANS
PIPING PLAN 12
Discharge Recirculation with Strainer
PIPING PLAN 32
Clean Flush
PIPING PLAN 538
Closed Loop with Heat Exchanger and Accumulator
• Use with single seal
• Cools seal
• Increases pressure in sealchamber- Throat bushing optional
• Clean fluids only- Solids ccm erode seal- Solids can dog seal when
bushing is used
• An orifice can be used toreduce flow and pressure
• Use with a single seal
• Provides clean flllid to seal
• Prevents clogging
• Acceptable flush fluids- Clean, compatible fluid-Water, ii compatible-Clean product-Downstream additive.-Carrier solvent
,---- -- c� • Use with dual seals
(()Ot.O,Nl (00!,l,NT • oo,
4400 GAS SEAL
• Optional thermocouple
• No foaming
• Heat is removed by an ai1-cooled 0< water-cooledheat exchanger
• Accumulator sizing crucial
• Maintains constant pressureon the circulation system
IN GLAND CONTROL SYSTEM
PIPING PLAN 13
Suction Recirculation
PIPING PLAN 33H
SpiralTrac'" Version D Type I
PIPING PLAN 53C
Heat Exchanger and Piston Accumulator
-l!U(f ·=
442 SPLIT
MECHANICAL SEAL
• Vents air and prevents dry run
• Prevent5 dogging
• lowers pressure in sealchamber
• Cools seal• Reduces seal generated heat
• Use caution with low vaporpressure liquids
• Use with a single seal
• Removes solids
• Seal runs in dean fluid
• Prevents clogging
• Removes vapor fromseal chamber
• Preverns dry running
• No flush required
• Optional thermocouple
• No foaming
• Heat Is removed by anair-cooled or water-cooledheat exchanger
• Tracks product pressurein seal chamber
• Maintains constant pressureon the circulation system
PIPING PLAN 14
Suction and Discharge Recirculation (Vertical)
PIPING PLAN 335
SpiralTrac'" Version F Type S
PIPING PLAN 53P
Circulation with Pressurized External Barrier Fluid Tank
nu,o """"
RlGLU10R
�mu!:! ""''
OIEC< •••
S10 SINGLE AND S20 DUAL
STREAMLINE'M CASSETTE SEALS
IDEAL
• Vents air and preventsdry ,un
• Use with single sealor dual seal
• Prevents clogging
• Cools seal
• Promotes flow
• Reduces seal generated heat• Use caution with low vapor
pressure liquids
• Use with a single seal
• Removes solids
• Seal runs in clean fluid
• Prevents dogging
• Prevents dry running
ccw cw
• Maintains constant pressure and liquid supply to the dual seal
• External water pressureis set at 30 psig {2 bar g)over maximum sealchamber pressure
• Initial tank level is set throughthe external warer pressure line
• Pressurize tank to 25 psig(1,7 bar g) over maximumseal chamber pressure witha regulated gas pad, thenisolate gas pressure
• Tank is then charged Withregulated external waterpressure
• System operates with a constantexternal water pressure
180 HEAVY DUTY
SINGLE SEAL
PIPING PLAN 21
Cooled Discharge Recirculation
I ""ll"'
PIPING PLAN 41
Cooled Discharge Recirculation with Cyclone Separator
(OOIAIII 001
COOWITtN
CONUNJIIATEDAERMMI 10 M,'P wm:i,l
PIPING PLAN 54DM
Circulation with Pressurized External Barrier Fluid Source and Flow Guardian'" DP50
e
CLUHBAAIIIER fUJlD IN
280 HEAVY DUTY
DUAL SEAL
"-E"
• use with a single seal
• Cools hot, volatile flLJids
• Cools seal
• lnaeases seal chamberpressure
• An orifice can be usedto control flow and reducepressure
• Use with close tolerancethroat/restriction bushing
• Use with a single seal wherefluid contains some abrasi�es
• Cools seal
• Increases seal chamber pressure
• Supplies cleaner fluid
• Reduces clogging potential
• Density of solids must besignificantly greater than fluid
• Use caution with high viscosity fluids
• Requires pressLJre differential
• Will not remove micron sizeparticles
• Use with a dual seal
• Pressurize barrier fluid15 • 30 psig (1 - 2 bar g) over maximum sealchamber pressure
• DP50 provides inboard sealleak detection, pressureregulation and flow control
• Barrier fluid should be clean,compatible and lubricating
• Provides clean fluid to inboardseal faces
PHONE: 618 9302 8400 FAX: 618 9302 6186 www.chesterton.com
EMAIL: [email protected] www.pumpnseal.com
