9fa燃气轮机压气机叶片断裂典型案例

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1、Failureof9FAGasTurbineCompressor–AUniqueExperience.9FA燃气轮机压气机叶片断裂-----一个典型案例DhabolpowerprojectofRGPPL,aJointVentureofNTPC,GAIL&MSEB,consistof6numbersofGEmakegasturbinesand3numberofGEmakesteamturbineswithmoduleconfigurationof2GT+1ST.Hence,thereare3moduleandknownasblock-I,block-IIandbl

2、ock-III.RGPPL电厂,印度国家电力集团的合资企业,有GE制造的6台燃机和3台汽机,采用2拖1的模式,三台机组分别称为I、II、III机组。Thoughthereare6numbersofGEmakegasturbinesbutall6gasturbinesarenotidenticalsofarthecapacity,TITandheatrateareconcerned.AsperthedataavailableatsiteandTractable(ConsultanttoIndianlenders)report,thegasturbineofbloc

3、k-IissupposetobePG9331andgasturbineofblock-IIandblock-IIIarePG9351version.AsperGEtechnicalliteraturePG9331isknownas9FA+andPG9351isknownas9FA+emodel.Fromthetechnicalliteratureavailableininternet,thetechnicalspecificationsof9FA+&9FA+eareasfollows:尽管有6台GE公司的燃机，但是到目前为止6台燃机的容量、透平入口温度、机组效率

4、等不一致，根据机组收集的有用数据和印度的相关报告，I机组的燃机型号为PG9331，II、III机组的燃机型号为PG9351。按照GE的技术通报文件PG9331称为9FA+，PG9351称为9FA+e，从GE官方网站获取的9FA+和9FA+e参数如下：ItcanbeseenfromthetechnicalspecificationsmentionedaboveinthetablethattechnicallythereissubstantialdifferencebetweenPG9351andPG9331.ThoughBlock-IIandBlock-IIIga

5、sturbinesofDabholPowerProjectaresupposetobePG9351butduetofailureofcompressorofGT2BandfailureoftierodofGT#3A,gasturbinerotorofGT#2Bhasbeenreplacedwithsparerefurbishedrotorofblock-IandGT#3ArotorhasbeenreplacedwithGT-1B/1Ausedrotor.Therefore,withthepresentconfiguration,block-IIandblock-

6、IIIconsistsofoneGTofPG9351andoneGTofPG9331version.从上表所述的关于PG9351和PG9331的不同点已很详细。尽管II、III机组为PG9351燃机，但由于发生了压气机事故的为GT#2B和GT#3A的拉杆，燃机GT#2B转子更换为I机组的备用转子，GT#3A转子更换为GT-1B/1A使用过的转子。因此，目前的配置情况是，II和III燃机由PG9351和PG9331混合组成。TheentireplanthasbeenrevivedbyGEexpertsandundertheirsupervision.Notonly

7、this,beforestartingrevivalactivities,GEcarriedoutconditionassessmentofall6GasTurbinesandbasedonassessmentresultGErecommendedsparestobereplacedforhealthyrunningoftheplantandallthesparesrecommendedbyGEhavebeenreplacedduringtherestorationofrespectiveGasTurbine.整个计划在GE专家的领导和监督之下完成。除了这些，在

8、检修完成之后再次启动前，