水布垭电站4号水轮发电机组改造后异常振动分析及处理  

Vibration Analysis and Diagnosis of Shuibuya Hydro-power Station No.4 Unit

作　　者：卢双龙 王楠 刘俊 LU Shuang-long;WANG Nan;LIU Jun(State Grid Hubei Electric Power Company Electric Power Test Research Institute)

机构地区：[1]国网湖北省电力有限公司电力科学研究院,湖北武汉430077

出　　处：《电站系统工程》2021年第6期75-78,共4页Power System Engineering

摘　　要：水布垭电站4号水轮发电机组在改造后首次启动过程中出现了振动超标、摆度偏大及不稳定等异常振动现象。通过对测试数据分析,指出发电机转子质量不平衡、动静摩擦及轴承间隙变大是导致机组异常振动的主要原因。现场通过动平衡和调整轴承间隙后,成功处理了该机组振动故障。Multiple vibration problems such as upper bracket vibration excessive standard, shaft vibration large and unstable occurred in Shuibuya hydro-power station No.4 unit. Based on vibration measured data, pointing out that generator rotor mass imbalance and friction are the major cause of the set abnormal vibration. By adjusting bearing clearance and dynamic balance in field, the set vibration faults were solved successfully.

关 键 词：水轮发电机组 振动 故障诊断 

分 类 号：TK730.7[交通运输工程—轮机工程]