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主泵用静压机械密封的流场数值分析.docx

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主泵用静压机械密封的流场数值分析 Abstract Inthispaper,numericalsimulationswereconductedtoanalyzetheflowfieldofthemechanicalsealusedinthemainpumpwithstaticpressure.Thesimulationmodelwascreatedbasedonthephysicalstructureofthemechanicalsealinmainpump.Thefluidmechanicsequationsandboundaryconditionsweresetup.Thevelocity,pressure,andheattransferfieldswereobtainedthroughthenumericalcalculations.Theresultsshowedthatthemechanicalsealhadasignificantimpactonthefluidflowfield,particularlyonthepressuredistributionandtemperaturedistribution.Basedontheseresults,optimizationsuggestionsforthemechanicalsealwereproposedtoimprovetheperformanceofthemainpump. Introduction Mechanicalsealsarewidelyusedinvariousindustrialapplications,especiallyinanimalhusbandry,agriculturalandirrigationpumps,waterandsewagetreatment,andoilandgasapplications.Themechanicalsealisadevicethatpreventsleakageoffluidthroughtheclearancebetweentwosurfacesinrelativemotion.Themechanicalsealgenerallyconsistsoftwoparts,thesealbodyandthestationaryring.Therearevarioustypesofmechanicalseals,includingrotatingandstaticmechanicalseals.Thestaticmechanicalsealismorecommonlyusedinapplicationswherethedifferenceinfluidpressurebetweentheinsideandoutsideofthesealedenvironmentisrelativelysmall. Thestaticmechanicalsealismainlycomposedofastationaryringandamovingring.Thecontactbetweentheringsisthroughthepressureofthefluid.Thestationaryringisgenerallyfixedinposition,whilethemovingringisinstalledontherotatingshaft.Thefluidthatpassesthroughthesealispressurized,whichcreatesabalanceofpressureonbothsidesofthesealtopreventleakage. Staticmechanicalsealsarecommonlyusedinmainpumps,wheretheyplayanimportantroleinensuringstableandefficientoperation.Theuseofstaticmechanicalsealsinmainpumpscansignificantlyreducetheleakagerate,improvethesealingeffect,andreducethemaintenancecostofthepump. Inthisstudy,weconductednumericalsimulationstoanalyzetheflowfieldofmechanicalsealusedinthemainpumpwithstaticpressure.Theaimofthisresearchwastoprovideabetterunderstandingoftheimpactofmech