某汽轮发电机组异常振动分析及处理

Vibration Analysis and Diagnosis for a Turbo-generator Unit

某汽轮发电机组大修首次启动过程中,出现了振动超标、振动突变及不稳定振动现象。通过对测试数据分析,指出汽轮机转子质量不平衡、虚假信号和动静摩擦是导致机组异常振动的主要原因。通过高速动平衡和更换涡流传感器连接线后,彻底解决了该机组振动问题。

The abnormal vibration analysis and fault diagnosis is presented for a turbo-generator unit. It is found that rotor mass imbalance, false vibration signal and rotor to stator rub arc the major causes of the unit abnormal vibration. By in field balance and sensor cable replacement, the unit vibration faults were solved successfully.