大口径大流量提升套筒式减压阀的降噪措施

21419998JOURNALOFWUHANAUTOMOTIVEPOLYTECHNICUNIVERSITYVol.21No.4Aug.1999(),,,;;TB534.10,,,,,,,,,,,,,,,,,,11/h/dB8854882911943115dB,,1[1],,,;;,,,,,,,6dB,()1m,85dB,,,,:1999203216.,,36,;,(430070).2,,3:;;32.1,,,50500Hz,90dB,,,10008000Hz,90dB,,,,,,,2.2,:,,,,,,(),,,,196MPa,,,100dB(1)[2]:p=kc(p1-pv)(1)(2):p=c2r(p1-pv)(2),p1;pv;kc;cr(1)(2),p,,,,p,,p,2.3,10008000Hz,,,,[3]3,16214:,,,,1,,(3)[4]R=k1Q(3),R;Q;k1,k11,,,,R,,,,,,,,;,,,,;,;,,,M4M8,0.770.8,4,,,,,,,,,26199981GB10868289.2..:,1995.3..:,1992.4..:,1997.Noise2ReductionMeasureforHeavyCaliberandFlowLiftingTelescopic2feedDecompressingValveTianJunAbstractThemethoddeterminingadecompressingvalvepstoleranceofnoiseandthemechanismofnoisepro2ducedbytheworkingvalveisanalyzed.Thenoise2reductionmeasureforaheavycaliberandflowliftingtelescopic2feeddecompressingvalveisadoptedtogetasatisfactoryeffect.Keywordsdecompressingvalve;noise;noise2reductionmeasureTianJunEngineer;WuhanBoilerFactory,Wuhan430070,China.(:)36214: