SSS离合器PPT演示课件

SSS离合器介绍,SSSclutch,1,联合循环原理,排气,2,单轴联合循环（汽轮机与发电机直接串联）,优点：共用发电机缺点：设置辅助锅炉运行受牵制,3,SSS,单轴联合循环（汽轮机与发电机之间装SSS离合器）,优点：运行无牵制缺点：装自同步离合器,4,SSS离合器：,功能：（摘自SSS离合器使用手册）,Thepurposeoftheclutch：TheSSSClutchisusedinasingleshaftcogenerationplanttoconnectanddisconnectthesteamturbinedrivetooneendofthegeneratordrivenattheotherendbyagasturbine.SSS离合器安装在单轴共用发电机的电厂设备上，以联接或断开汽轮机与发电机，发电机的另一端与燃气轮机相联连。Withtheoutputsideoftheclutch(thegeneratorandgasturbine)rotatingatfullspeed,theinputsideoftheclutch(thesteamturbine)canbestartedandrunuptofullspeedtoautomaticallyengagetheclutchandconnectthedrive.Thesteamturbinecanbeshutdownindependentlyofthegasturbineandtheclutchwillautomaticallydisengagetodisconnectthedrive.离合器的输出端（发电机和燃气轮机）在全转速运行时，离合器的输入端（汽轮机）能启动并达到全速，离合器自动啮合与发电机相连。汽轮机也能独立于燃气轮机单独停机，停机时离合器自动脱开而与发电机断开。,5,简言之，SSS离合器是一种单向传递扭矩的装置,单向传递扭矩装置应用实例：棘轮机构,仅当主动轮（内则）作顺时针转动且转速大于被动轮（外侧）时，被动轮才被驱动而传递扭矩。,应用于：低转速，小功率,6,螺纹特性,7,螺纹线为螺旋线，螺旋线具有同样的“旋转位移”特性。典型应用一例：回转设备,大轴,小齿轮,小齿轮轴,大齿轮,8,SSS工作原理(No.1B),TheinitialsSSSdenotetheSynchro-Self-Shiftingactionoftheclutch,wherebytheclutchdrivinganddriventeetharephasedandthenautomaticallyshiftedaxiallyintoengagementwhenrotatingatpreciselythesamespeed.Theclutchdisengagesassoonastheinputspeedslowsdownrelativetotheoutputspeed.首字母SSS指的是离合器的“Synchro-Self-Shifting”作用，当离合器的主动、从动齿轮转速完全相等时两者相位同步、自动轴向移动而啮合。而一旦输入转速低于输出转速时离合器脱开。ThebasicoperatingprincipleoftheSSSclutchcanbecomparedtotheactionofanutscrewedontoabolt.Iftheboltrotateswiththenutfree,thenutwillrotatewiththebolt.Ifthenutispreventedfromrotatingwhiletheboltcontinuestoturn,thenutwillmoveinastraightlinealongthebolt.SSS离合器的基本工作原理可比拟为螺母拧在螺栓上。如果螺栓转动时螺母是自由的，则螺母将随螺栓一同转动，如果螺母受限制而螺栓继续转动，则螺母将沿螺栓作直线运动。,9,SSS工作原理(No.1B),InanSSSclutchtheinputshafthashelicalsplineswhichcorrespondtothethreadofthebolt.Mountedonthehelicalsplinesisaslidingcomponentwhichsimulatesthenut.Theslidingcomponenthasexternalclutchteethatoneend,andasetofpawlsattheother,Whentheinputshaftrotates,theslidingcomponentrotateswithituntilapawltipcontactsaratchettoothontheoutputclutchringtopreventrotationoftheslidingcomponentrelativetotheoutputclutchring,andalignthedrivinganddrivenclutchteeth.,Pawls,10,SSS工作原理(No.1B),Astheinputshaftcontinuestorotate,theslidingcomponentwillmoveaxiallyalongthehelicalsplinesoftheinputshaftmovingtheclutchdrivinganddriventeethsmoothlyintoengagement.,Duringthismovement,theonlyloadtakenbythepawlisthatrequiredtoshiftthelightweightslidingcomponentalongthehelicalsplines.,Astheslidingcomponentmovesalongtheinputshaft,thepawlpassesoutofcontactwiththeratchettooth,allowingthedrivingteethtocomeintoflankcontactwiththedriventeethandcontinuestheengagingtravel,11,Drivingtorquefromtheinputshaftwillonlybetransmittedwhentheslidingcomponentcompletesitstravelbycontactinganendstopontheinputshaft,withtheclutchteethfullyengagedandthepawlsunloaded.,SSS工作原理(No.1B),Whenanutisscrewedagainsttheheadofabolt,noexternalthrustisproduced.SimilarlywhentheslidingcomponentofanSSSclutchreachesitsendstopandtheclutchistransmittingdrivingtorque,noexternalthrustloadsareproducedbythehelicalsplines.,12,Ifthespeedoftheinputshaftisreducedrelativetotheoutputshaft,thetorqueonthehelicalsplineswillreverse.Thiscausestheslidingcomponenttoreturntothedisengagedpositionandtheclutchwilloverrun.Athighoverrunningspeeds,pawlratchetingispreventedbyacombinationofcentrifugalandhydrodynamiceffectsactingonthepawls.,ThebasicSSSclutchcanoperatecontinuouslyengagedoroverrunningatmaximumspeedwithoutwearoccurring.,SSS工作原理(No.1B),Back,13,SSS工作原理(No.4),SSSPrincipleNo.4Dashpot-doubleactingtypeThepurposeofthedoubleactingdashpotistocushionclutchengagementathighaccelerationandslowdowntherateofdisengagement.,14,SSS工作原理(No.4),15,SSS工作原理(No.4),16,SSSPrincipleNo.5RelayTypeClutch,SSS工作原理(No.5),17,SSS工作原理(No.5),Sequencetoengage/disengage啮合/脱开的步骤,18,SSS工作原理(No.5),Sequencetoengage/disengage啮合/脱开的步骤,19,SSS工作原理(No.5),Sequencetoengage/disengage啮合/脱开的步骤,20,SSS工作原理(No.11b),SSSPrincipleNo.11bDisabledpawls,Thepurposeofdisabledpawlsistopermittheclutchoutputmachinetobestoppedformaintenancewhilsttheclutchinputmachinecontinuestorotateatlowspeed(ie.byturninggear).,21,SSS工作原理(No.11b),22,SSS工作原理(No.11b),23,Adiagrammaticviewoftheclutchshowingthesubassembliesandthemaincomponentparts.,离合器主要零部件示意图,24,啮合/脱开演示,25,啮合/脱开演示,26,啮合/脱开演示,27,啮合/脱开演示,28,啮合/脱开演示,29,啮合/脱开演示,30,啮合/脱开演示,31,啮合/脱开演示,32,啮合/脱开演示,33,啮合/脱开演示,34,啮合/脱开演示,35,Dwg.No.SL18565Page1,Size340TClutch+SwitchUnit,36,Dwg.No.SL18565Page1主剖面放大图,Size340TClutch+SwitchUnit,37,Size340TClutch+SwitchUnit,Dwg.No.SL18565Page2,38,Dwg.No.SL18565Page2主剖面放大图,39,棘爪结构放大图,40,润滑油工作方式,脱开状态,啮合状态,41,性能参数,42,SSSGearsLtd.,43,合影,44,SSS离合器,45,试验台rig,做完试验的工件从试验台吊出,46,试验台rig,试验台控制面板,47,试验台rig,试验台万向联接器,48,啮合位移发送器,啮合位移发送器安装演示,49,SSSGEARSLTD.现场安装培训,50,运输架,运输和现场安装,51,运输架