基于CFD的阀芯颈部直径对液压锥阀性能的影响研究

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1、机床与液压Dec．2014HydromechatronicsEngineeringV0l_42No．24DOI：10．3969／j．issn．1001—3881．2014．24．010NumericalinvestigationontheefectofconeneckdiameterontheperformanceofhydraulicpoppetvalvebasedonCFDJin—yanSHI-_．HuiLI。SouthwestJiaotongUniversity，Chengdu610031，China。HunanRailwayPro

2、fessionalTechnologyCollege，Zhuzhou412001，ChinaTechnologyCenter，SichuanChuanRunLtd，Chengdu610031，ChinaAbstract：ComputationalFluidDynamics(CFD)methodwasadoptedinthispapertoanalyzetheinnerflowofvalvecavitywithdifferentconeneckdiameters．Themassflowrate．flowcoefficient．coneres

3、istanceandsteadyflowforceofhydraulicpoppetvalvewereobtainedatdiferentuncork．Basedonthesimulationresults．ithasshownthatthechangeofvalveconeneckdiameterDwilInotcausethechangeofmassflowratewhenthevalveopeningisaconstant，andtheflowcoeffi-cientisalmostaconstantaround0．86：valve

4、coneneckdiameterDhassmalinfluenceontheconeresistanceandsteadyflowforce．Wlththeincreaseofvalveopening．theconeresistancegetsdecreased，however，thesteadyflowforcegetsincreasedduringthisprocess．Keywords：Hydraulicpoppetvalve，Pe#ormance，Flow，Flowcoefficient，Coneresistance，Steady

5、flowforceplugtheconeintothevalveorvalveblock，andit1．Introductionwillbefixedbythescrewconnectionbyusingthecontrolcoverandthevalvebodyorvalveblock．Hydraulicpoppetvalveisoneofthemostimpor—Therelativedimensionsamongthevalvesleeve，tantbasiccomponentsinhydraulictransmissionandt

6、hevalvebodyandthecoverarestandardize{1．butCOntrolsystems．Itcontrolstheoperationofhydraulicthejntemaldimensionsofcomponentscouldbedetersystembycontrollingtheinnerflowfield．Therefore，minedbythedesigners，suchasconeshape，thecharacteristicoftheinnerflowfieldwilldirectlymatched

7、shapeandsizebetweenvalvesleeveinternaldeterminetheperformanceofvalve．Manyscholarsholeandcone，andthespringsize．Amongthea—havedonealotofworkforthepoppetvalvebyusingbove—mentioneddimensions，theshapeofconehasthetheoreticalapproach，experimentalmethodandstronginfluenceonthepopp

8、etvalve[1—4]．There—computationalfluiddynamicsmethod：theseworkfore，thispaperwillmainlYstudytheinf