锅炉吹灰程序控制系统的设计

281　　　　　　　　　　　　　　　　　　　　　　　Vol.28　No.1200601　　　　　　　　　J.　Wuhan　Inst.　Chem.　Tech.　　　　　　　　Jan.　2006:10044736(2006)01005604锅炉吹灰程序控制系统的设计陈裕国,谈宏华(武汉化工学院电气信息学院,湖北武汉430074)　:.,PLC.,.:;;PLC:TP278　　　:A:20050118:(1965),,,,.:、PLC.0　　,.,.,,[1].,:,,,,,.、,.,..,,.,,,.1　1.1　1220T/H.、.1　Fig.1　Theschematicdiagramoftheprogramcontrolsystemofblowingawaydustinboiler:1～341.1.1　吹灰管路系统　,;、、.,,.、.,,、,.Rosemount1151,AlfaLavalECA60,Fisher,Rotork.115KG/CM2,20KG/CM2,.,.Υ60×5mm、Υ28×3mm20.1.1.2　吹灰器系统　,34...,,,,,,,,,.,360°,,.1.1.3　控制系统　、、.,,,、.,,,.、,.,PLC,PLC.1.2　.1.2.1　疏水暖管阶段　,,.,,.,,,,.1.2.2　吹灰器吹灰阶段　,,,.,、、.,,,,.1.2.3　吹灰结束阶段,.34,2h,,.,,,,,.2　.,,、.2.1　2,,LTi.STiPLCOUTi(AC220V)KZi,,LTi.　　,STiPLCOUTi,.LJi,KFi,,LTi.KVSi,QJ、HT、.571:,LJi.,,.2　Fig.2　Thecontrolcircuitofblowingawaydustappliance2.2　PLC3PLC/.3　PLC/Fig.3　TheconnectioncircuitofPLCI/Osignals　　C200HE[2]PLC.CPUC200HECPU42E,C200HID212,C200HOC225,C200HWPA204S,C200HWBC051.,.2.3　4.PLC,.,:①MFT;②;③,;④;⑤.4　Fig.4　TheflowchartofPLCcontrolprogram3　　,,,,,.:[1]　.[M].:,2002.[2]　,.[M].:,2003.5828ProgramcontrolsystemdesignofblowingawaydustinboilerCHENYuguo,TANHonghua(SchoolofElectricalandInformationEngineering,WuhanInstituteofChemicalTechnology,Wuhan430074,China)Abstract:ThecompositionanddesignprocedureofautomaticcontrolsystemofblowingawaydustinboilerinthermalpowerplantisintroducedandthehardwareandsoftwareforthecontrollerofthesystembyusingOMRONC200HESeriesPLCisachieved.Keywords:blowingawaydust;programcontrolsystem;PLC本文编辑:陈晓苹☆(上接第53页)StudyonpreparationofoilsolublenanocopperparticlesinmicroemulsionXUJiansheng,CAIYifei,YUANXiaohui(SchoolofMechanicalEngineering,WuhanInstituteofChemicalTechnology,Wuhan,430074,China)Abstract:TheoilsolublenanocopperparticleswerepreparedbychemicalreductioninthemicroemulsionsystemofH2O/SDBS/Span80/Tween80/HL68.Thecopperwascharacterizedbyscanningtunnelingmicroscopeandtransmissionelectronmicroscope.Theresultsshowedthatthecopperparticlesarespherical,andthesizesarefrom10to20nmwithasmallpartitionofconglomeration.Thepropertechnologyconditionofpreparationwasstudiedintermsofactivator,scatteroperationandtemperature.Keywords:microemulsion;nanocopper;chemicalreduction本文编辑:陈晓苹☆(上接第55页)AnonlinesearchmethodofkeepinggaininMTSACHENJie(SchoolofElectricalandInformationEngineering,WuhanInstituteofChemicalTechnology,Wuhan430074,China)Abstract:Inthispaper,themodifiedtwostepalgorithmhasbeenappliedtoanoptimizationproblemformultiinputsingleoutputnonlinearsteadystatemodelasobjectfunction.Anonlinesearchmethodofkeepinggainwasproposed.Thesimulationresultsshowthatthemethodiseffective.Keywords:MTSA;keepinggain;steadystateoptimization本文编辑:陈晓苹591: