水轮机过机流量测量分析

第33卷第6期华电技术Vo.l33No.62011年6月HuadianTechnologyJun.2011何小波(,610039):,,,,,,:;;;;:TV136+.1:A:1674-1951(2011)06-0035-02:2011-03-08;:2011-03-251,,,,,,,,,,,,,,,2,,1,Rvu=C(:R,;vu;C),,,,h1+v212g+p1=h2+v222g+p2(:h1,h2;p1,p2;v1,v2;g),,p=p1-p2=v222g-1v212g,,,qVp,,qV,p=p1-p2=v222g-v212gv1v1=v2v2=qVqV,:qV=Kp,qV=f(p),K:,,T,qVp;K2,36华电技术第33卷,KK,2-K,,K,2-,K,;,K,,,,,,,qV=Kp,K,K3,0~60kPa,24VDC,4~20mA,24V,,3.8mA,,1,,,p1p2,p1,p2,,,,,1,:15.8m3/s34.2kPa13.12mA,4~20mA0~30000,:K=15.816/(300009.12)=0.000924,qV=Kp,,2qV,qV,,K(K0.1208),,72h,,,,,,,,,,,,0.1kPa0.854m3/s,1.0kPa2.702m3/s,1.1kPa2.833m3/s,30.0kPa14.798m3/s,30.1kPa14.822m3/s,,0.1kPa1cm,1cm()0.85m3/s,1cm,,,3,,,3,,,1%,,2m3/s,,,,,2m3/s,,,70%,(下转第39页)第6期栾怀东,等:1.5MW大型水平轴风力发电机组安装39,,;,,32.3.5,,2.3.6(1),,,,(2),,,(3),,(4),,,,,2.4240h,:,,:,240h3200971,10567,1225,1231,:[1].[M].:,2006.[2]DL/T5192004,[S].(编辑:刘芳):(1976),,,,(Emai:[e-mail])(上接第36页)10m3/s,0.6kPa1%,2m3/s,,,,,4:(1),,(2),,,,(3)145~90,;,(4),4,,,:[1].[M].:,1999.[2],.[M].:,1994.(编辑:王书平):(1981),,,,,(Emai:[e-mail])82Abstracts第33卷CompanyLimited,Qiqihar161000,China)Abstract:TheSQUARE-LK-2automaticmaterialcontrolsystemanditsworkingtheorywereintroduced.ThecompositionandmaintechnicaldataoftheSQUARE-LK-2automaticmaterialcontrolsystemandthetechnicalrequirementsofthesysteminstallationwereexpounded.TheapplicationoftheSQUARE-LK-2automaticmaterialcontrolsystemincoalconveyingsystemcanresolvetheproblemsofpreventionandalarmofjammingofthecoalconveyinganddroppingpipeseffectively.Keywords:coalconveyingsystem;automaticmaterialcontrolsystem;coalconveyinganddroppingpipe;triggertype;signal11-06-23Functionof9EseriesgasturbinepowergeneratingsetinpeakloadregulationofpowergridWUQiang1,HOUXingheng2,FANFang1(1.ShanghaiFengxianGasTurbinePowerGenerationCorporationLimited,Shanghai201403,China;2.ShanghaiBranchofChinaHuadianCorporation,Shanghai200003,China)Abstract:Accordingtothestructurecharacteristicsof9EseriesnaturalgasfiredcombinedcycleunitsinShanghaiPowerGrid,theroleofthesetypeunitsinpeakloadregulationofpowergridwasarranged.Thetechnicalandeconomicalcharacteristicsofnaturalgasfiredcombinedcycleunitwereanalyzedandcomparedwiththeeconomicalefficiencyof300MW,600MWand1000MWcoalfiredunits;anditwaspointedoutthatthegasturbinecombinedcyclepowergenerationhasadvantagesofcomprehensiveutilizationofenergyandhigherefficiency.Basedonanalysisofmainequipmentoperationreliabilityof9Eseriescombinedcycleunits,aconclusionwasobtainedthatthereliabilityof9Eseriesunitsinloadregulationoperationisbetterthanthatofothertypeunits.Keywords:9Eseriesgasturbinegeneratingset;peakloadregulationofpowergrid;designidea;economyanalysis;reliabilityanalysis11-06-27FieldweldingmethodofT91steelhightemperaturesuperheatertubeofboilerPENGChong(HubeiSecondElectricPowerConstructionEngineeringCompany,Wuhan430030,China)Abstract:TheT91steelhaspoorweldability,strongercoolcracksensitivityandcertainhotcracktrend;soitsfieldweldingpassingrateislower.Accordingtothesitepracticalsituationofthe300MWcogenerationprojectofHubeiHuadianHuangshiPowerGenerationCorporationLimited,theT91steelsuperheatertubefieldweldingofthisproject,theargonfillingmethodandrelatedmattersneedingattentionweresummarized,providingreferenceforsimilarpowerplantinT91steeltubewelding.Keywords:T91steeltubewelding;argonfilling;superheaterofboiler11-06-29AnalysisonstallfaultofprimaryairfaninalargethermalpowerplantandpreventivemeasuresGAOXi1,LIQingang2(1.ChinaHuadianEngineeringCorporationLimited,Beijing100035,China;2.GuotouQinzhouPowerGenerationCorporationLimited,Qinzhou535008,China)Abstract:Twoadjustablemovablebladetypeaxialflowfansareconfiguredinboilerofapowerplantasprimaryairfan.Sincetheywereputintooperation,thestallfaultoccurredfrequently,andthisinfluencedonsafeoperationoftheunitseriously.Accordingtotheexperimentandadjustmentoftheprimaryairfansoftheunit,thereasonsofstallfaultofthefansinpracticaloperationwereanalyzed.Fromtheangleofoperationtechnicalmanagement,thepreventionandtreatmentmeasuresoffanstallfaultwereputforward,whichcanbeusedasreferenceforoperatorsofsimilarfansinpreventionandtreatmentofprimaryairfanstallfault.Keywords:primaryairfan;stal;lreasonanalysis;preventivemeasure11-06-32AdjustmentofshaftsystemcenterofM701FgasturbineafteralonedisassemblyandrotorreplacementJINYanhai(GuangdongHuizhouNaturalGasPowerCorporationLimited,Huizhou516082,China)Abstract:Aimingattheproblems,whichwereoccurredincenteringofshaftsystemofcurrentdomesticFclassgassteamcombinedcycleunitafterthegasturbinerotatorwasreplaced,somefeasibleadjustmentmeasuresforcenteringofshaftsystemwereputforward.Thesemeasurescanbeusedasreferenceinsimilargasturbineoverhau.lKeywords:gasturbine;disassembly;shaftsystem;center;adjustment11-06-35AnalysisonmeasurementofflowpassingthroughhydraulicturbineHEXiaobo(EnergyandEnvironmentSchoo,lXihuaUniversity,Chengdu610039,China)Abstract:Theflowmeasurementmethodbyusingdifferentialpressuretransmitterisusedinhydropowerstationscurrently.Inthismethod,accordingtothatthewaterflowinthevolutecasingabidesbythelawofconstantvelocitytorque,combiningwiththe