PG9171E型燃气轮机停机过程中擦缸异常分析处理  

Analysis and Treatment of Abnormal Cylinder Rubbing during Shutdown of PG9171E Gas Turbine

作　　者：刘林 华敏 卢伟明[2] Liu Lin;Hua Min;Lu Weiming(Zhejiang Zheneng Technology Research Institute Co., Ltd., Hangzhou 311121, China;Zhejiang Zheneng Zhenhai Power Generation Co., Ltd., Zhejiang Ningbo 315200, China)

机构地区：[1]浙江浙能技术研究院有限公司,杭州311121 [2]浙江浙能镇海发电有限责任公司,浙江宁波315200

出　　处：《燃气轮机技术》2021年第1期41-43,47,共4页Gas Turbine Technology

摘　　要：某电厂1号燃气轮机2020年5月停机后,发现压气机缸有异常擦缸声,盘车电流波动、跳闸,盘车无法重新投运。根据现场情况及历史运行数据,安排开展内窥镜检查及原因分析工作,综合PG9171E型燃气轮机结构特点和历史案例,列出可能导致该异常现象的各种原因,结合现场检查结果,逐一排查,最终得出本次异常现象的原因为机组停运后,过度投运透平间冷却风机引起缸体收缩所致,并对此提出相应预防措施。In May 2020,after shutdown of No.1 gas turbine in a power plant,it was found that the compressor cylinder had abnormal cylinder rubbing sound,the turning current fluctuated and tripped,and the turning gear could not be put into operation again.According to the site conditions and historical operation data,carry out endoscopy and cause analysis,combined with the structural characteristics and historical cases of PG9171E gas turbine,list the possible causes of this exception,check the on-site inspection results one by one,finally,it is concluded that excessive operation of the cooling fan in the turbine room after the unit shutdown caused the cylinder block to shrink.According to the reasons,the corresponding preventive measures are taken.

关 键 词：燃气轮机 压气机 盘车 跳闸 原因分析 

分 类 号：TK478[动力工程及工程热物理—动力机械及工程]