600MW汽轮发电机组轴瓦振动异常原因分析及处理  

600MW Turbo-Generator Set Bearing Abnormal Vibration Cause Analysis and Processing

作　　者：赵志勇[1] 刘勇海 牟法海[2] 李宏卫[1] 

机构地区：[1]河北国华定洲发电有限责任公司 [2]河北省电力研究院

出　　处：《电站系统工程》2014年第3期53-54,57,共3页Power System Engineering

摘　　要：针对某电厂2号汽轮机低压缸7、8号轴瓦瓦振超标问题,分析了轴瓦振动特点,认为轴瓦支撑系统在汽轮机工作转速附近存在结构共振是导致低压缸轴瓦振动超标的主要原因,通过采用对低压转子进行动平衡的方法,在低压转子正反向末级叶轮外侧轮面上加配重,有效解决了7、8号轴瓦瓦振异常的问题。For the No. 2 in a power plant steam turbine low pressure cylinder bearing watts No.7 and 8 levels of vibration problem, analyzes the characteristics of bearing vibration, think the bearing support system work in steam turbine speed（near） structure resonance is the main cause of the low pressure cylinder bearing vibration levels. By using the method of dynamic balancing of low pressure rotor, the low pressure rotor and add weight to the level at the end of the impeller outer wheel surface, effectively solve the bearing No. 7 and 8 tile abnormal vibration problems.

关 键 词：汽轮机 低压缸 结构共振 动平衡 

分 类 号：TK268.1[动力工程及工程热物理—动力机械及工程]