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高温热油泵双端面机械密封泄漏故障原因分析.docx

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高温热油泵双端面机械密封泄漏故障原因分析 Title:AnalysisoftheCausesofLeakageinHighTemperatureHotOilPumpDoubleEnd-faceMechanicalSeals Abstract: Theefficientandreliableoperationofhigh-temperaturehotoilpumpsiscrucialinvariousindustrialprocesses.However,theoccurrenceofleakageinthedoubleend-facemechanicalsealofthesepumpscanleadtosignificantoperationaldisruptionsandeconomiclosses.Inthispaper,weaimtoanalyzethecausesofsuchleakageandprovidepossiblesolutionstomitigatetheproblem. 1.Introduction High-temperaturehotoilpumpsplayavitalroleinmanyindustries,includingchemical,petrochemical,andpowergeneration.Thedoubleend-facemechanicalsealiscommonlyusedinthesepumpstopreventleakage.However,despitetheireffectivedesign,facedwithchallengingoperatingconditions,thesesealsmaysufferfromissuessuchasleakage,resultingindecreasedpumpperformanceandincreasedmaintenancecosts.Therefore,itisessentialtoanalyzethecausesofleakageandfindviablesolutionstoaddresstheproblem. 2.OverviewofDoubleEnd-faceMechanicalSeals Thissectionprovidesabriefoverviewofdoubleend-facemechanicalseals,includingtheirstructure,functioningprinciple,andcommonmaterialsusedintheirconstruction.Understandingthedesignandcomponentsofthesesealsiscrucialforidentifyingthepotentialcausesofleakage. 3.FactorsContributingtoLeakage 3.1OperatingConditions Hightemperatures,excessivepressure,andaggressivemediaarecommonoperatingconditionsthatcancompromisetheintegrityofdoubleend-facemechanicalseals.Therapidtemperaturechangesandexposuretocorrosivefluidscanleadtosealdegradationandincreasedleakage. 3.2SealMaterialIncompatibility Theselectionofsealmaterialsiscriticaltoensurecompatibilitywiththeprocessfluidsandoperatingconditions.Inadequatematerialselectioncanresultinchemicalattacks,thermalexpansionmismatch,andacceleratedwear,leadingtoleakage. 3.3SealFaceDamage Mechanicalsealfacesarepronetodamageduetofactorssuchasmisalignment,excessivevibration,andinadequatelubrication.Theseissuescancausefacedistortion,abrasion,andscoring,compromisingthesealingsurfaceandresultinginleakage. 3.4