风机结构-双馈.ppt

RotorMainshaftGearboxYawbearingGeneratorRadiatorYawmotorControllerAnemometerWindVaneMechanicalbrakeSmallshaft,END,机舱,RotorTherotorisboltedontothebigmainshaft.Thelargerotorhasthreeblades,whichcatchthewind.Thewindwillturntherotorifthereisenoughpowerinthewind.,返回,风轮,GearboxTherotorturnswithapp.22revolutionsperminute(RPM).Butthegeneratorhastoturn1500revolutionsperminute.Thegearboxconvertsthe22revolutionsto1500revolutions.,返回,齿轮箱,返回,齿轮箱-外形,返回,齿轮箱-内部,GeneratorThegeneratormakeselectricitywhenitturns.Thecurrentissentdownthroughthetowerinlargeelectricitycables.,返回,发电机,返回,发电机,YawmotorTheyawmotorturnsthenacellesothattherotorfacesthewind.Themotorhasacamwheelwhichfitsintothelargeyawbearingcamwheel.Thecontrollertellstheyawmotorwhentoturnthenacelle.,返回,偏航电机,返回,偏航电机,AnemometerTheanemometermeasuresthewindspeed.Itsendsinformationaboutthewindspeedtothecontrollerallthetime.,返回,风速仪,MechanicalBrakeThemechanicalbrakeisusedwhenthewindturbinehastoberepairedorithastobeserviced.Itensuresthattherotorwillnotstartturning.,返回,机械刹车机构,MainShaftTherotorturnsthelargeshaft.Theshaftisconnectedtothegearbox.Therotorusesalargeforcetoturntheshaft.Thereforetheshafthastobeverythick.,返回,主轴,返回,主轴,YawbearingThelargecamwheelismountedontothetower.Thecamwheeloftheyawmotorengagesthelargecamwheelandturnsthenacellewiththerotorintothewind.,返回,偏航轴承,返回,偏航轴承,RadiatorWhenthegeneratorisrunningitgetsveryhot.Butifitbecomestoohotitwillbreakdown.Thisiswhyithastobecooleddown.Insomewindturbines(suchasthisone)thegeneratoriscooledbywater.Theradiatorcoolsthewater,返回,冷却器,ControllerThewindturbinecontrollerisacomputerthatcontrolsthemanypartsofwindturbine.Thecontrolleryawsthenacelleagainstthewindandallowsthewindturbinerotortostartwhentheanemometertellsitthatthereisenoughwind.,返回,控制器,返回,控制器,WindVaneThewindmakesthewindvaneturn.Thewindvanetellsthecontrollerwherethewindcomesfrom.Thecontrollerthentellstheyawmotortoyawthatmeansturntherotorupagainstthewind.,返回,风向标,返回,风向标,SmallshaftThesmallshaftleadsthepowerfromthegearboxtothegenerator.Thesmallshaftrunsveryquickly,approx.1500revolutionsperminute.,返回,高速轴,返回,高速轴,返回,TOWER,FOUNDATION,总图,LatticetowerAtowercanbemadeoutofsteelprofilesthatareputtogethertoformalattice.Alatticetowerisverystrongandinexpensivetomanufacture.Thatisbecauseitdoesnottakeasmuchsteeltomakealatticetowerasitdoestomakeatubularone.,返回,格架式塔架,TubularTowerThebesttowersforlargewindturbinesareshapedli