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:100225855(2006)0220025204:(1962-),,,,,,(,730050),,,,,;;;:TH134:ASealingpressureanalysisoffloatball2valvebasedonFEAYUShu2rong,GAOYang,ZHANGXi2heng(CollegeofPetrochemicalEngineeringTechnology,LanzhouUniv.ofTech.,Lanzhou730050,China)Abstract:Thistexttakefloatingtheballvalvetosealcompletelythemechanismasthefoundation,withthefiniteelementanalyticalsoftwareandprocedureofVBsofanengineeringsbethetool,discussthefloatingballvalvetosealcompletelyvice-sealcompletelytheratiotopressatstalkto,pathtoandtheweekheadinguptodistributethecharacteristic,analyzingsealcompletelytofaceupsealcom2pletelytheratiopressofdistributetheregulation,andpassedimitateexperimentcomparethedifferentandsimilarbetweenthetheoriesvalueandananalyticalvalue,getdistributetheregulationoffloatingballvalvesealcompletelytheratiopress.Keywords:floatballvalve;sealscompletelytheratiotopress;finiteelementanalysis;emulation1,,,,,,,,VB,2(1),,DMW,,,,DMP(),,,Dmpq[1]q=NFMN=(DMW+DMN)2p16(l12-l22)=(DMW+DMN4(DMW-DMN)(1)q,MPaN,NFMN,mm25220062DMW,mmDMN,mmp,MPal1l2,mm(1),,(a)(b)13311ANSYS,,,(2),,,,,,Z,,,,231233,Z,Z,4,LaLa+(Lb-La)/2(La+Lb)/2Lb-(Lb-La)/2Lb;,DmwDmw-(Dmwn-Dmn)/2(Dmw+Dmn)/2Dmn+(Dmw-Dmn)/2DmnANSYSExcel,,45()6(),,6220062,,,,,,,7,,,,,060120180240300,,,,,,,45567,,,,,,,,61Z(La+Lb)/2,R(Dmw+Dmn)/22Z=Lb,R=Dmn3Z=La,R=Dmw7,,,,,,,;,,,,,,,,,,,,,,,,7220062,,,4DN40,PN116MPa,33mm,Dmn=20mmDmw=2316643mm,ZLa=23mmLb=2612488mm[2]qMFq[q](2)qMF,MPaq,MPa[q],MPa,qMF=112P=1192MPa,[q]=15MPa(,)(1)q=41766MPa,,LaLb(La+Lb)/2101797MPa101659MPa51392MPa,,DmwDmn(Dmw+Dmn)/291517MPa91965MPa41506MPa,,131905MPa,101491MPa,51465MPa,51235MPa,(Dmw+Dmn)/241506MPa,417664MPa,5146%5,,,,,,,,,,1,,.M.:,1987.2.K.:,1992.3,,.J..2000(6):29-32.4,.VJ..1998,28(8):27-30.5.M.:,1983.6,,.J..2004(10):195-197.(:2006101105)(16)(),,30%0,,,,,,,6,,,,,1.M.:,1992.2.M.:,2002.(:2006101108)8220062