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...mainsourceofproblem

2、s!Considerandexecutetank-piping-pumpmodulesasonesinglesystem.Preventandremovepossiblegaslockareainpiping.Longpipinglongcooldowntimehigherriskforgasformation.SimplifyP&IDstudypipeandinstrumentationlayoutindetail.(herelessisbetterthanmore!)Donotforgetfilterinsuctionline.>>>INSTALL

3、ATIONCENTRIFUGALPUMPOn-siteinstallation…mainsourceofproblems!(cont’d)Installdryrunningprotection(DPSorTSH)orlowdischargepressureswitch.Useamotoroverloadprotection.Makesurethepipe-fittersfollowthelayoutdrawingsexactly.Oncethepipingisdone,nobodylikestomakechanges.Testtheinstallation

4、beforeapplyinginsulation.Correctmistakesatonce,itpaysbackinreliability.>>>INSTALLATIONCENTRIFUGALPUMP>>>INSTALLATIONCENTRIFUGALPUMP>>>INSTALLATIONCENTRIFUGALPUMPSuctionlineForthecorrectoperationofacryogenicpump,theliquidatthesuctionporthastobevapourfree.Toobtainthiscondition,thesu

5、ctionlinehastobe:Asshortaspossibleandwellinsulated.Pressuredropinthelineshouldbeaslowaspossible.Avoidsharpbendsandgastraps.Dimensionsuctionlineforoptimalliquidvelocity.Thepipediametershouldbeselectedanddesignedforflowwithanaveragevelocityofapprox.2m/sec..Iftwopumpsareconnectedtoon

6、etankoutlet,thesplitofthelineshouldbein”Y“shape.Branchvalvestobeascloseaspossibletothemainline.Noloadsappliedtothepump.>>>INSTALLATIONCENTRIFUGALPUMPDischargelineDiameteradequatetoavoidextremepressuredropandsamesizeasvaporizer(ifapplicable).Protectedbysafetyvalve.>>>INSTALLATIONCE

7、NTRIFUGALPUMPGasventlineGasventlinesareoptionalincentrifugalpumpinstallationsanddependonpipinglengthsandlayout.>>>INSTALLATIONCENTRIFUGALPUMPNitrogenpurgingConnectionsfornitrogenpurgeareavailableoncertaintypesofpumps.Nitrogenpurgerecommendedtopreventhumidityenteringsealareasandgea

8、rbox.Continuouspurgeduringcoldsta