超临界空冷660MW汽轮机组不稳定振动原因分析与处理  

Cause Analysis and Treatment for Unstable of Supercritical Air-cooled 660MW Turbine

作　　者：牟法海[1] 侯锐 王文营[1] 卢盛阳[1] 李宏卫[3] 李然[3] 

机构地区：[1]河北省电力研究院,石家庄050021 [2]大唐河北发电有限公司马头热电分公司,邯郸056044 [3]神华河北国华定洲发电有限责任公司,定州073000

出　　处：《汽轮机技术》2012年第1期72-74,共3页Turbine Technology

摘　　要：针对某厂一台超临界空冷660MW汽轮机组高中压转子过临界振动逐渐爬升的问题,详细介绍了振动特征,确定了造成振动异常的原因是转子存在较大残余内应力,应力释放使得高中压转子发生永久性弯曲,对转子采取切削加工和高速动平衡的处理方案,消除了转子弯曲和异常振动。To solve unstable vibration of HP/IP rotor of one supercritical air-cooled 660MW turbine in one power plant, the vibration characteristics are detailedly introduced. It＇ s found out that the cause of abnormal vibration is the more residual stress existing in the rotor and the cause of the HP/IP rotor＇ s permanent bending is the release of stress. By taking the techniques of machinery cutting and high-speed dynamic balancing, the rotor＇ s permanent bending and abnormal vibration are eliminated finally.

关 键 词：超临界空冷汽轮机组 不稳定振动 残余内应力 弯曲 动平衡 

分 类 号：TM311[电气工程—电机]