LM2500燃气轮机结构简介.ppt

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1、SumpareasandbearinglocationsGasTurbineOrientationINLETCOMPONENTSExhaustcomponentFrontFrameAXIALCOMPRESSORCOMP.REARFRAMELPTurbineHSPTHPTurbineCombustionsystemC.F.F.compressorfrontframeThefrontframesupporttheforwardofcompressorshaft,housetheinletgearboxandtheAsumpfrontframeassemblyInletgearbox

2、TheinletgearboxlinksthecompressorrotorwiththeaccessorygearboxAGBbytheradialshaftfrontframeassemblyInletgearboxTheinletgearboxtrasmitthetorquefromtheaccessorygearboxtotheturbineshaftduringthestartupAndfromthegasturbineshafttotheAGBduringthenormaloperationofthegasturbineA.G.B.accessorygearboxf

3、rontframeassemblyAbearingAbearingisarollertypebearing.ItsupporttheradialloadoftheforwardpartofthecompressorrotorCompressorTheLM2500+compressorisa17stage,axial-flowcompressor.ItincorporatesVIGVsandvariablestatorsinstages0through6toprovidestall-freeoperationandhighefficiencythroughoutthestarti

4、ngandoperatingrange.Thecompressionratiois23:1HPcompressorTheHPcompressorisderiveddirectlyfromtheTF39CF6-6aircraftengine.ThiscompressorincorporatesvarioussystemthatwillbebetterhandleonGASTURBINESYSTEMchapter.inthissectionwewillexplainONLYwichandwerearelocatedthemainHPCcomponentsThestatorcasin

5、ghousetheVIGV’ssystemandtheVSV’ssystemandtheairextractionmanifoldformultipourposescope.Thecompressorrotorisassembledwithamultispoolassemblysystem.CompressorCompressorRotorStg.0-1Stg.2to16CouplingCompressorCompressorcasingTheCompressorstatorconsistsofafour(upperandlower)caststatorcasethatcont

6、ainsthecompressorstatorvanes.CompressorCompressorcasingCompressorTwocasemadeofM-142steelBoltedhorizontalsplitallowon-sitemantenaincemanifoldforairextractionmurphyproof(onewayistallation)supportVSVsystemfrontcasingCompressorAirextractionAirextractionfor:SUMPpressurizationSUMPcoolingBLEEDforfl

7、ametemperaturecontrolinDLEapplicationBLEEDHPrecoupaircompressorIGV-VSVactuationmechanismActuatorpushrodsTorqueshaftShrouds1and2includeinterstageairsealsurfaceofteflon®bondedonthealluminiumshroudsCompressorVSVSTGVanesCompressorVSVSTGVanesShrouds1and