600MW培训资料(中英对照).ppt

600MW培训资料(中英对照).ppt

《600MW培训资料(中英对照).ppt》由会员分享，可在线阅读，更多相关《600MW培训资料(中英对照).ppt（38页珍藏版）》请在冰点文库上搜索。

STEAMTURBINEAUXILIARIESFOR2600MWHISARTHERMALPOWERPLANT海萨项目辅助系统介绍,CONTENTS目录,1GLANDSTEAM,DRAIN,LUBEOILSYSTEMINTRODUCTIONEQUIPMENTINSTRUCTION1汽封、疏水、润滑油等系统介绍2主要设备说明,GLANDSTEAM,DRAIN,LUBEOILSYSTEMINTRODUCTIONLUBRICATIONOILSYSTEMGLANDSEALINGSTEAMSYSTEMDRAINSYSTEMEXHAUSTHOODSPRAYS1汽封、疏水、润滑油等系统介绍润滑油系统汽封系统疏水系统低压缸喷水系统,LUBRICATIONOILSYSTEM,SYSTEMDESCRIPTIONCOMPONENTSDESCRIPTIONOPERATIONINSTRUCTIONBOOKLUBRICATIONOILSYSTEMINTRODUCTIONLUBRICATIONOILSUPPLYSYSTEM润滑油系统系统概述结构说明运行说明书润滑油系统说明书润滑油供油系统,SYSTEMDESCRIPTION,SUPPLYOILTO:

TURBINEANDGENERATORJOUNALBEARINGSTHRUSTBEARINGTURNINGGEARGENERATORSEALOILSYSTEMMECHANICALOVERSPEEDTRIP系统概述系统供油至：

汽轮发电机组径向轴承推力轴承盘车装置发电机密封油系统机械超速遮断装置,LUBRICATIONOILRESERVOIR（润滑油箱）MAINOILPUMP（主油泵）OILEJECTOR（注油器）BEARINGOILPUMP（轴承油泵）EMERGENCYOILPUMP（危急油泵）SEALOILBACKUPPUMP（氢密封备用油泵）VAPOREXTRACTORS（除油雾装置）PLATEOILCOOLERS（板式冷油器）PIPING（管道）STRAINER（过滤器）LIFTINGOILSYSTEM（顶轴油系统）,COMPONENTSDESCRIPTION（结构说明）,OPERATION（运行）,Whentheturbineisoperatedatratedspeed,themainoilpumpsuppliesalltheoilrequirementsofthelubricationoilsupplysystem.Theflowfromthemainoilpumpdischargesintotheinternalreservoirpipingwhereitprovidesoilthroughanorifice,totheHPSealOilBackupHeaderandtheMechanicalOverspeedTripandTripMechanism.Italsoprovidesmotiveoiltotheoilejector.Thedischargefromtheoilejectorprovidesoilforthemainoilpumpsuction,theLPSealOilBackupHeader.Also,afterpassingthroughtheoilcoolers,thisoilisusedforlubricatingtheturbineandgeneratormainbearingandthrustbearing.Thelubricationoilsupplysystemisnormallyaclosedsystem,andalloilreturnstothereservoir.汽轮机在额定速度运行时，主油泵提供系统所需的全部润滑油。

来自主油泵的油进入油箱的内部管道，通过孔板将油送到高压密封油备用总管、机械超速脱扣和脱扣机构，也为注油器提供动力油。

从注油器排出的油供主油泵吸入口、低压密封油备用总管，并通过冷油器后，用来润滑汽轮发电机组的主轴承和推力轴承。

润滑油供给系统通常是个封闭系统，所有的油回到油箱。

LUBRICATIONOILSYSTEM,GLANDSEALINGSTEAMSYSTEM,SYSTEMDESCRIPTIONCOMPONENTSDESCRIPTIONOPERATIONINSTRUCTIONBOOKGLANDSEALINGSTEAMSYSTEM汽封系统系统概述结构说明运行说明书汽封系统,SYSTEMDESCRIPTION系统概述,Theglandsealingsystemisdesignedtopreventingressofcoldairintotheturbinesandfromthereintothecondenserunderalloperatingconditions.Inaddition,itmustbepreventedthattheglandsteamescapedintothemachinehall.Theglandsealingsystemperformsthefollowingtasks:

SEALSTEAMSUPPLYTOTHESHAFTSEALS;EXHAUSTOFGLANDSTEAMFROMTHESHAFTSEALS;CONDENSATIONOFTHEGLANDSTEAMINTHEGLANDSTEAMCONDENSER;EXHAUSTOFNON-CONDENSABLEGASESFROMTHEGLANDSTEAMCONDENSERTOATMOSPHERE.汽封系统的作用是在转子和门杆处，防止空气漏入或蒸汽漏出蒸汽室。

汽封系统有以下作用：

轴封供汽轴封漏气通过汽封冷却器冷却轴封漏气通过汽封冷却器排除不凝结气体,COMPONENTSDESCRIPTION（结构说明）,REGULATORVALVES（调节阀）HPSTEAMSUPPLYVALVE（高压供汽调节阀）AUXILIARYSTEAMSUPPLYVALVE（辅助供汽调节阀）COLDREHEATSTEAMSUPPLYVALVE（冷再热供汽调节阀）SPILLOVERVALVE（溢流调节阀）GLANDCONDENSER（汽封冷却器）DESUPERHEATER（汽封减温装置）SAFETYVALVES（安全阀）STEAMSTRAINERS（蒸汽滤网）INTERCONNECTINGPIPING（连接管道）,OPERATION,Onstartingtheturbineandatlowloads,SealingsteamissuppliedtochamberXleakingpastthesealsintotheturbineononeside,andintochamberYontheother.ChamberYismaintainedataslightlysubatmosphericpressurebytheglandcondenser.ConsequentlyairleakspasttheoutersealfromtheatmospheretochamberY.TheleakagesteamandairmixtureisremovedfromchamberYthroughaconnectiontotheglandsteamcondenser.WhentheexhaustpressureofacombinedHP-IPexceedszoneXpressureareversalinlowoccursacrosstheinnersealring.Astheexhaustzonepressureincreases,flowincreasessothattheglandsforacombinedHP-IPbecomeself-sealingatapproximately25%load.Atthispoint,steamisdischargedfromzoneXtotheglandsystemheader.Fromtheheader,thesteamflowstotheLPglandsexcesssteam,itany,flowstothecondenserthroughthespillovervalve.Ifthereisspillover,itwillnormallyoccurathighloadsasshownontheheatbalancesfortheunit.,在启动和低负荷时，密封汽供到“X”腔室，通过汽封片一侧漏入汽轮机，另一侧漏到“Y”腔室。

“Y”腔室由装于汽封冷却器上的电动机驱动的风机使之保持稍低于大气的压力，从而使空气从大气通过外部汽封片漏到“Y”腔室。

漏泄蒸汽和空气混合物通过与汽封冷却器的连接管从“Y”腔室抽出。

当高中压合缸的排汽压力超过“X”区的压力时，汽流在内汽封环发生相反流动。

随着排汽区压力增加，流量也增加，在大约25%负荷时变成自密封。

大于这一负荷，蒸汽从“X”区排出，通到汽封系统总管。

蒸汽再由总管流至低压汽封。

如有任何过剩的蒸汽，则通过溢流阀流到凝汽器。

运行,GLANDSTEANSEALINGSYSTEM,DRAINSYSTEM,SYSTEMDESCRIPTIONCOMPONENTSDESCRIPTIONINSTRUCTIONBOOKDRAINSYSTEM疏水系统系统概述结构说明说明书疏水系统,SYSTEMDESCRIPTIONTHEFUNCTIONOFTHEDRAINSYSTEMISTOPREVENTINGRESSOFWATERINTOTHETURBINEANDTHESAFEREMOVEDOFWATERFROMSTEAMTURBINE.COMPONENTSDESCRIPTIONDRAINVALVESMAINSTEAMINLETVENTILATINGVALVESDRAINPIPES系统概述汽轮机疏水系统的功能是排除汽轮机的一些重要部位内的凝结水。

结构说明疏水阀主蒸汽管放汽阀疏水管路,DRAINSYSTEM,EXHAUSTHOODSPRAYS,SYSTEMDESCRIPTIONCOMPONENTSDESCRIPTIONINSTRUCTIONBOOKEXHAUSTHOODSPRAYS低压缸喷水系统系统概述结构说明说明书低压缸喷水系统,SYSTEMDESCRIPTIONHIGHEXHAUSTTEMPERATURESMUSTBEAVOIDEDTOMINIMIZECHANCESOFCONTACTBETWEENSTATIONARYANDROTATINGPARTSFROMTHERMALDISTORTIONOREXCESSIVEDIFFERENTIALEXPANSION.THEEXHAUSTHOODSPRAYSYSTEMISDESIGNEDTOBEPUTINOPERATIONAUTOMATICALLYWHENTHEROTORSPEEDHASREACHED2600RPMANDCONTINUEINOPERATIONUNTILTHEUNITISCARRYINGAPPROXIMATELY15PERCENTRATEDLOAD.COMPONENTSDESCRIPTIONREGULATORVALVETHROTTLEVALVEANDBYPASSVALVE,系统概述机组必须尽量避免发生高的排汽温度，以减少转子与静子部件之间由于热变形或过度差胀而产生碰擦的可能性。

通常，喷水系统被限制在2600r/min到15%额定负荷时的范围内运行，只要在启动前将控制开关放置在“自动”位置上，这一要求即能自动实现。

结构说明喷水调节阀节流阀和旁路阀,EXHAUSTHOODSPRAYSYSTEM,2CONSTRUCTIONINSTRUCTIONBEARINGSOILRESERVOIROILPUMPSOILCOOLERSGLANDSTEAMCONDENSER2设备说明轴承油箱油泵冷油器汽封冷却器,BEARINGS轴承,THRUSTBEARING（推力轴承）THRUSTBEARINGJOURNALBEARING（径向轴承）TILTINGPADBEARING,THRUSTBEARING推力轴承,FUNCTION作用ACCOMMODATETHEAXIALTHRUSTLOADINGINTHEROTORSYSTEM承受转子的轴向载荷LOCATETHEROTORINTHETURBINECYLINDER确定转子的轴向位置LOCATION位置LOCATEDINSIDETHEGOVERNORPEDESTAL安装在前轴承座内,JOURNALBEARING径向轴承,FUNCTION作用SUPPORTTHEWEIGHTOFTHETURBINEROTORSYSTEM承受转子重量ALIGNTHEROTORSECTIONTOMINIMIZEROTORBENDINGSTRESSES承受各种因此产生的附加载荷LOCATETHERADIALPOSITIONOFEACHSECTIONOFTHEROTORSYSTEM保证转子相对于静子部分的径向对中TYPE&STRUCTURE形式和结构TILTINGPADBEARING,LPBRG,OILRESERVOIR油箱,OILPUMPS油泵,MAINOILPUMP主油泵D-015MAINOILPUMPBEARINGOILPUM轴承油泵EMERGENCYOILPUMP危急油泵SEALOILBACKUPPUMP氢密封备用油泵LIFTINGOILPUMPS顶轴油泵,MAINOILPUMP,OILCOOLER板式冷油器PLATEOILCOOLER,GLANDSTEAMCONDENSER汽封冷却器,THEPURPOSEOFTHEGLANDSTEAMCONDENSERISTOMAINTAININTHEGLANDLEAKOFFSYSTEMAPRESSURESLIGHTLYBELOWATMOSPHERICPRESSURE,TOPREVENTTHEESCAPEOFSTEAMFROMTHEENDSOFTHEGLANDS,ANDTOREMOVEANDCONDENSETHEVAPOR.汽封冷却器的作用是维持汽封漏泄系统的压力略低于大气压力，防止从各汽封段逸出蒸汽以及抽取和凝结蒸汽。

GLANDSTEAMCONDENSER,