汽轮机在线性能计算中排汽焓的确定-任浩仁

186199812POWERENGINEERINGVol.18No.6Dec.19981任浩仁　盛德仁　卢学锋　陈坚红　徐　东(杭州　浙江大学)　　根据机组在线性能计算的要求,针对汽轮机低压缸运行的特点,运用最小二乘法和矩阵原理对汽轮机排汽焓的确定进行了探讨,实现了电厂监测系统中汽轮机排汽焓的在线计算,为汽轮机内效率的计算提供了依据。图4参4:199710291,,,,,,,,300MW,,,,,,,,,2,ASMEPTC6A-19822,,,3,1,ASMEPTC6A-1982,,,,,DIN1943,1975.2,GB8117-87,2,,,,,300MW1,3:2.1,,(),,,,,,,1-(P-H),,PH1,(),,,,1,,,,,,,,,,2.2,,,qiii2:2qi=hi-tsii=ti-ti+1i=tsi-1-tsi3,:qi=hi-ti+1i=ti-ti+1i=tsi-1-ti+12183qiiiiiititi+1ii+1tsitsi-1ii-14123,mtw1,5678,mtw2(4),2,D1D8(,,),:q100000002q200000033q300000444q400000000q500000006q600000077q700000888q8D1D2D3D4D5D6D7D8=b1b2b3b4b5b6b7b8:AD=b;,b=mtw11mtw12mtw13mtw14-Hgmtw25mtw26mtw27mtw28b4Hg,,,D4,,,,,,,,,362.3,,,,,,4,:Wi=PgenmgWi=D0h0+Drhqrh-Djhj-DchcPgenmg,WiDj,hc,hc1hc1hc2(hc1)hc2-hc1ee,0.0013,,:,P610%,0.145MPa0.1305MPa,0.001709921%,2370.108154kJ/kg2370.067627kJ/kg,,,time,time34,,,,,[1]..,1996,29(1)[2],.6()TELEPERMME.,1995(1)[3]..,1995,8[4]SIMEENSJIAXING2300MWPOWERPLANTPERFORMANCECALCULATIONS.SIEMEN-SKWULE31HERTWECK93,11,10,,1942,,418ABSTRACTRenHao-ren(Hangzhou,ZhejiangUniversity),ShengDe-ren,LuXue-feng,ChenJian-hong,XuDongCalculationofTurbineExhaustEnthalpyinOnlineSystemPowerEngi-neering,1998,18(6):14Thispaperdiscussesthathowtocalculatetheexhaustenthalpyofasteamturbine.Ac-cordingtotherequestofanonlineperformancecalculation,sometoolssuchasmatrixtheoryandotheralgorithmsarebeingusedtosolvetheproblem,andtheresultwillbehelpfultocalculatetheefficiencyofthesteamturbine.Figs4andrefs4.LiuDong-yuan(Xi'an,ThermalPowerResearchInstituteofMEP),MengQing-ji.FatigueResistanceReliabilityDesignandCheckforSteamTurbineBlades.PowerEngineering,1998,18(6):58Theprobabilitydistributionsofmaterialmechanicalpropertiesandthefatiguestrengthinfluencefactorsareanalyzedinthispaper.Bytheconceptoffatiguedamageresitancestrength,theprobabilitymodelofsteamturbinebladefatiguedamageaccumulationandfa-tiguereliabilityanalysismethodaresetup.Anexampleof680mmbladeisgiven.Tables4andrefs6.LinRu-mou(Beijing,InstituteofEngineeringThermophysicsforChineseAcademyofSci-ences),CaiRui-xian,XiaoYun-han.StudyofNewConceptofDesigningandOptimizationforTotalEnergySystem.PowerEngineering,1998,18(6):913,54Basedontherelevantresearchworksofourinstitute,thenewideaofdesigningandop-timizationforTES(totalenergysystem)isproposedinthispaper,whichincludesthenewconceptTESandgeneralperformanceinfullyoperatingregions,themethodofoptimizationandanalysisforthermodynamicssystem,thenewevaluationcriterion,systemoptimizationandsynthesis,systemmodularmodelingforthethermodynamicsperformanceinfullyoper-atingregions,etc.TianZi-ping(Shanghai,ShanghaiJiaotongUniversity),XuQin-xian.CorrectMeasurementofDrumWaterLevel.PowerEngineering,1998,18(6):1416Becauseoftheinfluenceofexpandinglevelandshrinkinglevel,itbecomesanimportantproblemeofboilersafetyoperationwhetherthelevelindicatorgivescorrectwaterlevelofthedrum.Basedonthetheoreticanalysisandcalculationaswellascomparisonwiththetestda-ta,thispaperdiscussestheauthenticityofwaterlevelindicatedbythelevelindicator.Itisworthfulforboilerdesignandoperation.Figs2,tables2andrefs3.ZhangXin-yu(Hangzhou,ZhejiangUniversity),XiaZhen-hai,FanJian-ren,Cenke-fa.StudyofComputer-Aided-Test(CAT)fortheDense/SparsePulverizedCoalSeparator.Pow-erEngineering,1998,18(6):1720Thenumericalsimulationresearchofthecollisiontypedensell/sparsepulverizedcoalseparatorhasdescribedinthispaperbasedontheCATmethod.Itanalysesandrevealsthemechanismofsomeaspectsinseparatingprocessbymultiphaseflowtheory,andcomestotheconclusionwithapplicationvalue.Figs7,table1andrefs5.LiXiao-dong(Hangzhou,ZhejiangUniversity),HuangGuo-quan,LiAi-minChiYong,7018