管壳式换热器管板与换热管焊接常见质量问题的防止

6242(,324100),(3),(4),,1...2002,25(2):110-1122,,,...2002,4(4):44-453...2001,5:1644...2001,6:103-1055,...2001,23(1):46-526...2002,11:52-531,,,,,:,,,,,,,,,,,,,2,,,:(1),192252l32mm,322.52.5mm,192252l11.5mm,l22.5mm;322.5l12.5mm,l23.0mm,,,,GB151q=ta/dl,(2)6320051,(,)2003()40,;,(3),,,,GB151-19995.8.3(l2=l1)3,,,,,,,,,,,,,,,,,,,,:,,;,,;,(,),,U,;,;,,:;,;,;;,;,,,,,,,,1,,2GB151-19993,,4ShanghaiDaHuaRealEstateCo.LtdShanghai,200072LiMaoxingShanghaiEngineeringChemicalDesignInstituteShanghai,200233Inthisarticle,thedesignandcalculationofpipingsupportoutsideofprocessunitinpetrochemicalindustry,thecommonproblemsoc-curredinthedesignandthecorrectionmethodswereintro2duced,whichcanbereferencedbytheengineers.Keywords:petrochemicalproductionunit,pipingsupport,pipingcorridor,horizontalforce,compensationjointBriefDiscussionofSeveralMethodsforBlockingLeakageOccurredinCastIronWaterPipeChenLinPhosphateFertilizerFactory,NanjingChemicalCo.,SINOPECNanjing,210048Inthisarticle,theanalysisofthecausesoftheleakageoccurredincastironwaterpipeisfirstcarriedout.Then,thefeasiblemethodstosolvetheproblemswereproposedsothatthechemicalproductioncanbeoperatedwiththesolidsafeguard.Keywords:castironwaterpipe,leakage,blockingleakageResearchandDiagnosisofMechanismforRotatingStallOccurredinCentrifugalCompressorZhongYaqi,ChengXiangrongInstituteofMechanicalEngineeringEastChinaUniversityofScienceandTechnologyShanghai,200237Themechanismandcharacteristicsofrotatingstalloccurredincentrifugalcompressorwereintroducedinthispaper.Basedontheresultsfromthetestingandtheanalysis,thediagnosisforthetroubleforacentrifugalcompressorwascarriedout.Keywords:centrifugalcompressor,rotatingstall,troublemecha2nismDiscussionofHOPTechnologyforSPV490QUsedforCrudeOilTankHuFangShanghaiEngineeringCo.,Ltd,SINOPECShanghai,200120Inthisarticle,heat-treatmentonlineprocessusedforSPV490Qwasintroduced.Comparedwiththetraditionalheattreatmentprocess,themicrostructureandpropertyofthisprocessproductwasanalyzed.Further,someproblemsneededtopayattentioninusingthisprocesswerepresented.Keywords:heat-treatmentonlineprocess(hop),SPV490Q,microstructure,propertyMaterialSelectionandStructureDesignfor2000m3LPGSphericalTankLiWenpingDesignInstitute,WuhanPetrochemicalPlantWuhan,430082Two2000m3LPGsphericaltanksweredesignedforLiquidPetroleumGasTankFactory,WuhanCoatMine.Inaccordancewiththerelevantcodesandstandards,thetankswerefabricatedbyusingof15MnNbRsteelplate,J557Rweldingrodand20MnMoforge.Inthisarticle,thediscussiononhowtousenewsteelplatemadeinChina,thestructureoptimizationandthedesignoflargeLPGsphericaltankwascarriedout.Keywords:LPGsphericaltank,materialselection,structurede2signOnProperDesignofFloatingHeadFlangeDingBomingEastChinaUniversityofScienceandTechnologyShanghai,200237Withtheanalysisoftheprincipleofcalculatingfloatingheadflangeandthecalculationchartbasedonthenumericalsolution,thepos2sible’optimumdesignandmosteconomicaldesignweredeter2mined.Theprogresschartoftheprogramforcalculatingfloatingheadflangewas,then,developed.Keywords:floatinghead,optimumdesign,mosteconomicaldesigWaterJacketMethodUsedinHydrostaticTestUnitforGasBottleWangZhen,ShiDingguoEastChinaUniversityofScienceandTechnologyShanghai,200237Thesituationofdevelopmentofhydrostatictestunitforgasbottleirrrecentyearswasintroduced.WaterJacketMethodusedinhy2drostatictestforgasbottlewasalsopresented,whichusestheup2streamcomputerasthekeycontrolandusesthedownstreamcom2puterastheauxiliarycontrol.ByusingVB6.0,avisualobjectorientedsoftware,operatinginWindowsXP,fordatacollectionwasdeveloped.Thus,thecollectionofthesignalsrepresentingpressureandwaterflow,informationdisplayandtreatmentandthereportoutputwererealized.Keywords:hydrostatictestunit,gasbottle,methodofmeasuringvolume,computercontrolInitialDiscussionofFiniteElementAnalysisforFlowFieldinImpingementStreamReactorYuYanfang,ZhangJianweiShenyangInstituteofChemicalTechnologyShenyang,110142Usingimpingingflowhasbeenprovedtobeoneofthemosteffec2tivemethodstotransferheatbetweentwostrengthenedphases.Asanewtypeofreactor,immersedcycleimpingingstreamreactorhasgreatpotentialityinapplicationforreactionbetweenliquidandliq2uid(orsolidliquid)phases.Inthispaper,thefiniteelementsoft2wareAN-SYS/FLOTRANwasusedtoimitateandanalyzethe3Dimpingementflowfield.IthasbeenshownintheresultsthateveryparametersinSCISRflowfieldarecompletelysymmetricalwithyaxis;thebothvelocityandpressurearehighintheimpingingzone,andthestaticpressurereachesthemaximumvalueatonepointinthiszone.Keywords:impingingstream,velocity,pressure,flowfieldDesignforFireProtectioninSECO900kt/aEthyleneUnitWangYuxiangChinaPetrochemicalEngineeringConstructionInc.Beijing,100101Inthisarticle,theselectionofequipment,thepipinglayoutandtheselectionofpipematerialinfireprotectiondesigninSECO900kt/aethyleneunitwereintroduced.Keywords:ethylene,fireprotection,designDesignofOnsiteProcessingMachineforLargeDiameterofFlangeKindofComponentsZhangSaoyu,TaoHongliang,ShiChengjiangLiaoningUniversityofPetroleum&ChemicalTechnologyWushun,113001Inaccordancewiththerequirementsforfie