基于中间点焓值校正的超临界机组给水全程控制(5)

第3期王玉清,等:基于中间点焓值校正的超临界机组给水全程控制15

SupercriticalUnitFullRangeFeedwaterControlSystemBased

onIntermediatePointEnthalpyCorrection

WANGYu2qing,　DONGChuan2min,　ZHENGYa2guang,　ZHANGHai2ping,　MIAOGuang2xiang

(BaodingElectricPowerVocationandTechnologyCollege,Baoding071051,China)

Keywords:once2throughboiler;　drymodel;　wetmodel;　enthalpy;　water2fuelratioAbstract:Duetothecomplexityofobjectcharacteristicsandtheintercouplingofcontrol

loops,itisverydifficulttorealizethecontroloffullrangefeedwater.Thewholefeedwaterprocessisdividedintotwostagesofdrymodelandwetmodelinthepaper,anddesignedrespectivelythecontrolmethod.TheenthalpyofStartupseparatoroutletadjuststhefeedwaterflowinstructioninthedrymodelstage.Minimumfeedwaterflowvalueisconsideredtobetheinstructionoffeedwaterintheotherstage.Furthermore,controlqualityisimprovedbyproperlyusingfeedforward,varyingparameter,structure,decouplingetccontroltechnology.Sitcommissioenthalpycanreflectwellchangesofwater2fuelratioanditinmaintainingsuperheatedsteamtemperat(上接第10　　300MW、600MW机组锅炉投运越来越多,问题也会随之出现,做好锅炉运行数据的收集整理和分析总结工作是非常必要的,为今后更高参数的800MW、1000MW机组锅炉进入印度市场打下坚

实基础。参考文献:

[1]J.G.辛格.锅炉与燃烧[M].北京:机械工业出版社,1989.[2]容銮恩.燃煤锅炉机组[M].北京:中国电力出版社,1998.

DesignandCommissionPerformanceofIndian

High2Ash2Coal2FiredBoilerAdoptingTangentialFiringSystem

WANGDing1,2,　WUYu2hong2

(1.SchoolofMechanicalandPowerEngineering,ShanghaiJiaotongUniversity,Shanghai200240,China;

2.ShanghaiBoilerWorks,Ltd.,Shanghai200245,China)

Keywords:high2ash2coal;　combustion;　performance;　heat2transfer

Abstract:Introducedesign,generallayoutandperformancetestingresultofIndianhigh2

ash2coal2firedboileradoptingtangentialfiringsystem.ListtheultimateanalysisandcombustionpropertyofIndianrepresentationalhigh2ash2coal.Presenttheproblemaboutheat2transfercharacteroffluegasproducedbyburninghigh2ashcoalandpointouttheshortageoftraditionalheat2transferformula.Duringboiler’sheatingcalculation,theinfluencefromIndianhigh2ash2coalmustbetakenintoaccountadequately.ThearticleispublishedmainlytobringattentionofpractitionersandcallfortheresearchforIndianhigh2ash2coal’scombustionandheat2transfer.