S109FA燃气-蒸汽轮机温态启动失败分析与防范措施  

Failure analysis and preventive measures of S109FA gas-steam turbine warm start-up

作　　者：万志勇[1] 

机构地区：[1]江苏华电戚墅堰发电有限公司,江苏常州213011

出　　处：《华电技术》2018年第6期35-37,共3页HUADIAN TECHNOLOGY

摘　　要：以美国GE公司S109FA燃气-蒸汽联合循环机组某次温态启动失败为例,分析了机组在停机后,系统布置中汽轮机高、中压缸上、下缸温差大的原因。通过停机、破真空、停轴封随后强制关闭高、中压发散阀的策略,减小了汽轮机高、中压缸上、下缸温差,避免了因上、下缸温差大而造成启动失败。Taking the warm start-up failure of an S109 FA gassteam combined cycle units made by an American company,GE,as an example,the reasons for temperature difference between top and bottom of high and middle pressure cylinder arranged in system is analyzed after the stop of the steam turbine.By shutting down,breaking the vacuum,stopping shaft seal and then close the high/middle pressure diverging valve,the temperature difference between top and bottom of high and middle pressure cylinder can be reduced,which can avoid the start-up failure caused by upper and lower cylinder temperature difference.

关 键 词：温态启动 轴振 高、中压发散阀 逻辑修改 

分 类 号：TK228[动力工程及工程热物理—动力机械及工程]