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6240,1:51:10,1:151:20,,1CAD,1:1CAD:,1:1,,,CAD,,,,,,CAD,,,,,A2(A2),,A2CAD2CAD,,,,,,,,,,,,3AutoLISP(VisualLISP)CAD,,,,AutoLISP(VisualLISP),CAD,,AutoLISP(VisualLISP),11,CAD(,451200)CAD,CAD©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.6320043,CAD,,,,CAD,4,4.1,,,,,4.2,,,,CAD,,CAD,,CAD,CAD,CAD,,1,,CAD,1997712,AutoCAD2000,,199941,200132612345bMPa360.6358.3357.8362.3359.76:,,,5,,5,(:),1,,,19982,,3,,4GB1511999,(61)©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.4PROCESSEQUPMENT&PIPINGVo1.41No.3JUNE2004(TotalNo.222)ShanghaiChemicalEngineeringDesignInstituteShanghai200233Abstract:Inthispaper,thetypesofsteeloilstoragetanksinpetrochemicalindustryandthetypesofthefoundationsforthetanksaswellasthedesignandstructureofthefoundationswereintroducedtothedesignandconstructionpersonnelforreference.Keywords:steeloilstoragetank,domerooftank,floatingrooftank,coveredfloatingrooftank,foundation,designInstallationofSafetyAccessoriesforOrganicHeatCarrierHeatersTianXiujuanNingxiaWuzhongInstituteofBoilerandPressureVesselInspectionWuzhong751100Abstract:Theeffectandinstallationrequirementsofthesafetyaccessoriesfororganicheatcarrierheaterswereintroducedandpotentiallyhiddentroublesthatareinconsistentwiththesafetyre2quirementswerepointedoutinthispaper.Keywords:organicheatcarrierheater,safetyaccessories,installationrequirementAnUnderstandingofFlexibilityAnalysisinASMEB31.3ProcessPipingDingBominEastChinaUniversityofScienceandTechnologyShanghai200237YingDao-yanNationalTechnologyCenterofProcessEquipmentShanghai200040Abstract:BasedontheprovisionsspecifiedinASMEB31.3ProcessPiping,someviewsonthequestionsabouttheflexibilityanalysisoftheprocesspipingincludingtherelationshipbetweenflexibilityanalysisandfatigueevaluation,andwhethertheeffectofpressurewasincludedintheflexibilityanalysisornotetc.wereputforwardfordiscussion.Keywords:processpiping,flexibilityanalysis,fatigueevalu2ation,displacementstress,pressurestress,severecycliccondition,ASMEB31.3,ASMEVIII-2TechnologyofLeakLocationforOilPipelinesWangLan,WangYiEnvironmentalandChemicalEngineeringCollege,Xi’anJiaotongUniversityXi’an710000Abstract:Thetechnologyofleaklocationforthepipelinesispaidagreatdealofattentionbythepersonnelengagedinthepipelinemanagement.Thesystemofpipelineleaklocationisanimportantcomponentpartofthepipelineleakdetectionsystem.Inthispaper,somemethodsusedworldwideandsomeotherrisingtechnologyofleaklocationforoilpipelineswereintroduced.Theadvantagesanddisadvantagesofthosemethodswerealsoanalyzed.Itwasfiguredoutthatthelosscanbeminimizedonlywhentheleakagepointislocatedquicklyandaccuratelyandthusthemea2suresaretakenassoonaspossible.Keywords:pipeline,leakdetection;leaklocationApplicationofPressureReliefValvesagainst’WaterHammer’inLongOilPipelineLiYongPipelineStorageandTransportSubcompanyXuzhou221008Abstract:ThestructureandoperatingprincipleoftheDAN2FLOtypepressurereliefvalvesagainst’waterhammer’werein2troducedindetail.Thecausesof’waterhammer’occurredinlongoilpipelinewasalsoexplainedinthispaper.Basedontheserviceconditionsofthepressurereliefvalvesinthelongoilpipeline,somerecommendationsonoperationandmainte2nanceoftheminservicewereputforward.Keywords:pressurereliefvalve,structure,operatingprinci2ple,running-analysisExperienceinRevampingCentrifugalCompressorsinSyntheticAmmoniaPlantWeiZongshengChengdaEngineeringCorporationofChinaChengdu610041Abstract:Inthispaper,theexperienceinrevampingthepro2cessaircompressorandthesyntheticgascompressorinthe1000t/dammoniaplantforitstechnicalmodificationprojectwithaca2pacityincreaseof50%wasintroduced.Forthemodificationofprocessaircompression,itisamethodwithlessrevampingworkamount,lessriskandlessinvestmenttoaddaparallelcompressorthatisamulti-shaftmotor-drivencentrifugalcompressorthantomodifytheexistingprocessaircompressorunit,whichcansavemillionsofRMB.Forthemodificationofsyntheticgascompres2sion,changingtheinternalpartsorrenewingtheHP/LPcasingsofthesynthetic-gascompressorshouldbequotedbythetwomanu2facturersratherthanonlybytheoriginalmanufacturertoavoidhighpricefromasingleoffer.Theexistingsteamturbinesforthesyntheticgascompressorunitdonotneedtorevampastheirpowerisenoughtodriveafterhavingincreasedtheefficiencyofthecom2pressorandmodifiedthesyntheticprocess.Keywords:syntheticammonia,centrifugalcompressor,tech2nicalmodificationFailureAnalysisofMechanicalSealsforResidualOilPumpsandTechnicalImprovementZhuangYongfuEthylenePlantofTianjinPetrochemicalCorporationTianjin300271Abstract:Inthispaper,thecausesonfrequentfailureofme2chanicalsealsfortheresidualpumpsintheethyleneplantwereanalyzed.Byimprovingthestructureofthemechanicalsealsandselectingthecompatibleflushingfluid,agoodsealingeffectwasachieved.Keywords:mechanicalseal,failure,analysis,flushReliabilityAnalysisandDevelopmentofApplicationofAluminizedSteelTubeBundleWangHong,JiangGuanghongShandongQiluPetrochemicalEngineeringCorporationWangPeiwenShandongQilupetrochemicalconstructioncorporationZibo255400Abstract:Inthispaper,thedemonstrationthroughtestandanalysisonthereliabilityofthealuminizedsteeltubebu