:100225855(2007)0220012203:(1946-),,,,,(,200949),;;:TH134:AInquiryintoeffectiveareaofdiaphragmofgasdecompressorYANRen2xing,HUANGZong2hua(ShanghaiGeneralGasValveFactory,Baoshan200949,China)Abstract:Thisarticlepresentstheeffectiveareaofdiaphragmofhighpressuregasdecompressor,thevalveofwhichdeterminedbyexperimentisfarlessthanthatdeterminedbyformulaanditalsoana2lyzesthebasiccauseforthisdifference,showingtheessencethatthebutterflydiaphragmisusedinthehighpressuredecompressor.Keywords:decompressor;butterflydiaphragm;effectivearea1,,,,,,,21AmQtAm=01262(Dm2+Dmdm+dm2)(1)Qt=Pc(Am-df2/4)+Pjdf2/4+Qfa+fHf(2)Am,mm2Dm,mmdm,mmPc(),MPadf(),mmPj(),MPaQfa(112),Nf,N/mmHf,mm1(1),(12),2120072©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(35,24)3,(57)(1)(1)1DmmmdmmmAmmm2dfmmPcMPaPjMPaQfaNfN/mmHfmmQtNYQJ117240253263158113.50.68025DJY-2084302745141.62.5100101.44645DJY-2592403601201.62.5578.12.561652n1ndmmDmmF0mmH1mmPN/mmtmmP1NYQJ1160Si2MnA6.55822605275010.46037DJY-2060Si2MnA5312507365539174335DJY-2560Si2MnA5312507356.55391735033YQJ11AmPcMPaFmmQtNAmmm2Dmmm12.61820130541.51.43.52450139044.11.84.53150147746.62.25.63920156349.02.66.84760165051.43.07.85460166751.8:Pj=16MPa,P=700N/mm4DJY-20AmPcMPaFmmQtNAmmm2Dmmm0.63.61620191761.50.84.82160215266.81.06.12745233770.81.27.33285243272.61.48.53825248573.91.69.74365253174.8:Pj=3MPa,P=450N/mm5DJY-25AmPcMPaFmmQtNAmmm2Dmmm0.62.71377942-0.83.51785129541.21.04.32193150747.51.25.12601164851.31.45.82958171353.11.66.53315176154.3:Pj=3MPa,P=510N/mm2YQJ11Am-Pc3120072©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=0145YQJ11:1Cr18Ni9,=0136DJY-20:1Cr18Ni9,=0137DJY-254,,,,,,,,,,1.M.:,2002.2.M.:,2002.(:2006110125)11()2005,[]PhilipL1Skousen,:,ISBN780164896X,55100/10%:,15,:110142,:13840373900E2mail:web@chinavalveinfo1net©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.