cryostar 离心深冷泵 安装指导

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1、>>>InstallationCentrifugalPumps>>>INSTALLATIONCENTRIFUGALPUMPTypicalinstallationarrangements.Pipinglayout(2pumpsonthesamesuctionline).Suctionlinedimensionsandgeometry.Dischargeline.Bypassline.Gasventline(VP’s).Nitrogenpurging.SuctionFilter.On-siteinstallation...mainsourceofproblems!Considerandexec

2、utetank-piping-pumpmodulesasonesinglesystem.Preventandremovepossiblegaslockareainpiping.Longpipinglongcooldowntimehigherriskforgasformation.SimplifyP&IDstudypipeandinstrumentationlayoutindetail.(herelessisbetterthanmore!)Donotforgetfilterinsuctionline.>>>INSTALLATIONCENTRIFUGALPUMPOn-siteinstall

3、ation…mainsourceofproblems!(cont’d)Installdryrunningprotection(DPSorTSH)orlowdischargepressureswitch.Useamotoroverloadprotection.Makesurethepipe-fittersfollowthelayoutdrawingsexactly.Oncethepipingisdone,nobodylikestomakechanges.Testtheinstallationbeforeapplyinginsulation.Correctmistakesatonce,itpa

4、ysbackinreliability.>>>INSTALLATIONCENTRIFUGALPUMP>>>INSTALLATIONCENTRIFUGALPUMP>>>INSTALLATIONCENTRIFUGALPUMPSuctionlineForthecorrectoperationofacryogenicpump,theliquidatthesuctionporthastobevapourfree.Toobtainthiscondition,thesuctionlinehastobe:Asshortaspossibleandwellinsulated.Pressuredropinthe

5、lineshouldbeaslowaspossible.Avoidsharpbendsandgastraps.Dimensionsuctionlineforoptimalliquidvelocity.Thepipediametershouldbeselectedanddesignedforflowwithanaveragevelocityofapprox.2m/sec..Iftwopumpsareconnectedtoonetankoutlet,thesplitofthelineshouldbein”Y“shape.Branchvalvestobeascloseaspossibletoth

6、emainline.Noloadsappliedtothepump.>>>INSTALLATIONCENTRIFUGALPUMPDischargelineDiameteradequatetoavoidextremepressuredropandsamesizeasvaporizer(ifapplicable).Protectedbysafetyvalve.>>>INSTALLATIONCENTRIFUGALPUMPGasventlineGasventlinesareoptionalincentrifugalpumpinstallationsanddependonpipinglengthsa

7、ndlayout.>>>INSTALLATIONCENTRIFUGALPUMPNitrogenpurgingConnectionsfornitrogenpurgeareavailableoncertaintypesofpumps.Nitrogenpurgerecommendedtopreventhumidityenteringsealareasandgearbox.Continuouspurgeduringcoldsta