某教学楼消防供水系统

:100926825(2004)0120073202:2003210210:(19632),,1986,,,030024:,,,:,,:TU998.14:A1:180t/h;110m():1);2);3)::PLC,;,,2,PLC,,,,,PLC,,,,,,,,,,3PLC:,,,3.1,,,,,,PLC,,,12h,,,,,3.21):,PLC,,2):PID3):(D/A)3.31),,2),PLC,,3),,,,4)PLC,,Newideasonon2loadtapchangetechniqueoftransformerMALing(TianjinUniversity,Tianjin300072,China)Abstract:Inthispaperseveralinnovationideasareintroducedforon2loadtapchangeequipmentoftransformerandaccordingtoitsworkingprincipleandcircuitdesignofitsmainhardwareconcretedesignplanisintroducedwhichutilizesingle2clipcomputertocontrolwithgoodappli2cationandpromotionvalue.Keywords:single2chipcomputer,onloadtapswitch,steppermotor3730120041SHANXIARCHITECTUREVol.30No.1Jan.2004©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.:100926825(2004)0120074202:2003210218:(19692),,1992,,,041000:,,,:,,,:TU832.1:A,,,,,,,,,,,,,2010,,1998,,2000,2010,1,70%,,,,,,,,,2:1),,2),3),,,4),,,:1),12,,4000m2,,6,2),PLC,,8005,5),PLC,PLC,3.4,PLC,,,(030730),,44.1,,,:n=[60f(1-s)]/p,nf,,4.2,PIDPID,:1),,;2);3),Firewatersupplysystemofonenew2builtteachingbuildingZHANGYong2shi(IndustryEquipmentInstallationCompanyofShanxi,Taiyuan030024,China)Abstract:Inthispaperaccordingtothefirewatersupplysystemdesignofonenewly2builtteachingbuildingtwosystemcontrolmethodsareproposedaswellastherealizingmethodofthevariablefrequencycontroltechnology.Meanwhile,relatedcontrolchartandprogramtrapezoiddiagramaredescribed.Keywords:watersupplywithconstantpressure,variablefrequencycontrol,autocontrol4730120041SHANXIARCHITECTUREVol.30No.1Jan.2004©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.