资源描述：
《液压支架相关英文资料和翻译3》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、外文原文：TheAnalysisofCavitationProblemsintheAxialPistonPumpshuWangEatonCorporation,14615LoneOakRoad,EdenPrairie,MN55344Thispaperdiscussesandanalyzesthecontrolvolumeofapistonboreconstrainedbythevalveplateinaxialpistonpumps.Thevacuumwithinthepistonborecau
2、sedbytherisevolumeneedstobecompensatedbytheflow;otherwise,thelowpressuremaycausethecavitationsandaerations.Intheresearch,thevalveplategeometrycanbeoptimizedbysomeanalyticallimitationstopreventthepistonpressurebelowthevaporpressure.Thelimitationsprovi
3、dethedesignguideofthetimingsandoverlapareasbetweenvalveplateportsandbarrelkidneystoconsiderthecavitationsandaerations._DOI:10.1115/1.4002058_Keywords:cavitation,optimization,valveplate,pressureundershoots1IntroductionInhydrostaticmachines,cavitations
4、meanthatcavitiesorbubblesforminthehydraulicliquidatthelowpressureandcollapseatthehighpressureregion,whichcausesnoise,vibration,andlessefficiency.Cavitationsareundesirableinthepumpsincetheshockwavesformedbycollapsedmaybestrongenoughtodamagecomponents.
5、Thehydraulicfluidwillvaporizewhenitspressurebecomestooloworwhenthetemperatureistoohigh.Inpractice,anumberofapproachesaremostlyusedtodealwiththeproblems:(1)raisetheliquidlevelinthetank,(2)pressurizethetank,(3)boostertheinletpressureofthepump,(4)lowert
6、hepumpingfluidtemperature,and(5)designdeliberatelythepumpitself.Manyresearcheffortshavebeenmadeoncavitationphenomenainhydraulicmachinedesigns.Thecavitationisclassifiedintotwotypesinpistonpumps:trappingphenomenonrelatedone(whichcanbepreventedbytheprop
7、erdesignofthevalveplate)andtheoneobservedonthelayersafterthecontractionorenlargementofflowpassages(causedbyrotatinggroupdesigns)inRef.(1).Therelationshipbetweenthecavitationandthemeasuredcylinderpressureisaddressedinthisstudy.EdgeandDarling(2)reporte
8、danexperimentalstudyofthecylinderpressurewithinanaxialpistonpump.Theinclusionoffluidmomentumeffectsandcavitationswithinthecylinderborearepredictedatbothhighspeedandhighloadconditions.AnotherstudyinRef.(3)providesanoverviewofhydraulicfluidimpactingont
