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关于CFD阀芯颈部直径对液压锥阀性能影响研究.pdf

关于CFD阀芯颈部直径对液压锥阀性能影响研究.pdf

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机 床 与 液 压 Dec.2014 HydromechatronicsEngineering V0l_42 No.24 DOI:10.3969/j.issn.1001—3881.2014.24.010 Numericalinvestigation ontheeffectofconeneck diameteron theperformanceofhydraulicpoppetvalvebasedonCFD Jin—yanSHI -_.HuiLI。 SouthwestJiaotongUniversity,Chengdu610031,China 。HunanRailwayProfessionalTechnologyCollege,Zhuzhou412001,China TechnologyCenter,SichuanChuanRunLtd,Chengdu610031,China Abstract:ComputationalFluidDynamics(CFD)methodwasadoptedinthispapertoanalyzethe innerflow ofvalvecavitywithdifferentconeneckdiameters.Themassflow rate.flow coefficient. coneresistanceandsteadyflow forceofhydraulicpoppetvalvewereobtainedatdifferentuncork. Basedonthesimulationresults.ithasshownthatthechangeofvalveconeneckdiameterDwilI notcausethechangeofmassflow ratewhenthevalveopeningisaconstant,andtheflow coeffi- cientisalmostaconstantaround0.86:valvecone neckdiameterD hassmallinfluenceonthe coneresistanceandsteadyflow force.W lththeincreaseofvalveopening.theconeresistance getsdecreased,however,thesteadyflow forcegetsincreasedduringthisprocess. Keywords:Hydraulicpoppetvalve,Pe#ormance,Flow,Flow coefficient,Cone resistance, Steadyflow force plugtheconeintothevalveorvalveblock,and it 1.Introduction willbefixed by the screw connection byusing the controlcoverandthevalvebodyorvalveblock. Hydraulicpoppetvalveisoneofthemostimpor— Therelativedimensionsamongthevalvesleeve, tantbasic componentsin hydraulictransmission and thevalvebody and thecoverare standardize{1.but COntrolsystems.Itcontrolsth

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