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300MW(,635214):,31,,:;;Abstract:Itsverycommonthatvacuumofpowerplantvacuumsystemisonthelowside.ThispaperanalysisthereasonofvacuumonthelowsideofSichuanHua-yin-shanelectricitygeneratingcorporationLtd#31unit,proposesspecificmeasurestodealwithandachievedgoodresult.Keyword:vacuum;analysis;management:TK227:B:100326954(2008)0620030202131300MW::N300-16.67/537/537-8();:;:300MW;:6.4kPa;:24;:250%B2MCR,150%B2MCR,2312006217168h,,,200624-90kPa20064,,,3,,3,:1):-90kPa,,23kPa,,,-90kPa;2);3):,23kPa4),,,,112210r/min30MW60MW(kPa)-84.6-85.17-84.82-84.95(Pa/min)52084013401880,,31:,4,3316200812SichuanElectricPowerTechnologyVol.31,No.6Dec.,20081-89kPa0,12.6m200mm,,40h,,,,,,,,(2),,,,,2mbar.l/s1()3.2E-062(B)7.0E-073()8.1E-084()7.9E-0856.0E-086()3.6E-0820068,,,,,,,0.05mm,31,,200611,,12.6m,,,,(2136),,,,,,130mm,,,,331,,,,,,,20061123,3,,220MW0.20kPa/min,8min,5,,,31,,,(:2008-09-22)3MWkPa2006.11.25290-93.237.720/30.5352006.11.28262-92.636.521/32362006.11.30229-92.837.819.3/3034.73316200812SichuanElectricPowerTechnologyVol.31,No.6Dec.,20081