4.3 API Piping Plans中英对照

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1、APIPipingPlansAPI冲洗方案November2004JCTianjinTrainingModule4.3SealEnvironment密封环境1APIPipingPlansAPI冲洗方案Integral(internal)recirculationfrompumpdischargetoseal内部循环从泵的出口到密封Advantage优点-Noexternalpiping没有外部冲洗Limitations局限性-Changingflowraterequireddismantlingofpump改变流量需要拆泵-Forcleanpumpagesonly只能是适用干净的介质

2、APIPipingPlansAPI冲洗方案PointstoNoteforAPIPlan02:API02冲洗方案应注意的事项：Theinjectiontappingisusedforventingpriortostart–up.-在开车前，入口用来进行放空APIplan02isoftenusedtogetherwithplan62,especiallyonhightemperaturebellowsseals.冲洗方案2经常与62一起用，特别是用在高温波纹管密封APIPipingPlansAPI冲洗方案Noflushingtothemechanicalseal(‘dead-ended’

3、)机械密封里没有冲洗PointstoNoteforAPIPlan11:API冲洗方案11应注意的事项-Useanorificetorestricttheflowrateifthedischargepressureis3barhigherthansealchamberpressure.如出口压力高于密封腔压力3bar，需要用一个孔板限制流量-Useoncleanandlowabrasivesduties用在干净，含磨蚀性颗粒少的工矿APIPipingPlansAPI冲洗方案SealFlushingBy-PassfromDischarge单密封通过出口进行冲洗Recirculationf

4、romsealchamberthroughaflowcontrolorificeandbacktopumpsuction从密封腔里出,通过一个孔板返回到泵的入口PointstoNoteforAPIPlan13:API冲洗方案13应注意的事项-Useanorificetorestricttheflowrateifthesealchamberpressureis3barhigherthansuctionpressure.如果密封腔压力高于入口压力3bar，需要用一个孔限制流量-handleabrasivesdutybetterthanAPIplan11处理含有磨石性颗粒的工矿13方案好于

5、11方案-highersealchamberpressuretosuppressvaporisation较高的密封腔压力可抑制它的汽化APIPipingPlansAPI冲洗方案+=PointstoNoteforAPIPlan14:API冲洗方案14应注意的事项：-Flowbacktosuctionsidewillevacuatevapoursthatmaycollectinsealchamber.-Recommendedforlighthydrocarbonservice.APIPipingPlansAPI冲洗方案Recirculationfrompumpdischargethrou

6、ghaflowcontrolorificeandcoolertosealOpenLoopCoolingCircuitCoolingWaterOutlet冷水出口CoolingWaterInlet冷水入口APIPipingPlansAPI冲洗方案RecirculationfromapumpingringinthesealchamberthroughcoolerandbacktosealClosedLoopCoolingCircuit冲洗液通过密封腔中的泵效环从密封腔中流出经过换热器，再返回到密封中，形成自封闭循环。形成封闭的冷却回路ThroatbushingSuction入口Disch

7、arge出口18-24"Ventathighestpointofthepiping排起在管线的最高点CoolingWaterOutlet冷水出口CoolingWaterInlet冷水入口mechanicalsealwithpumpingringHeatexchanger换热器APIPipingPlansAPI冲洗方案PointstonoteforAPIPlan23:Thermosyphondesign热虹吸设计*heatexchanger换热器18to24