某联合循环机组汽轮发电机前轴承异常振动分析及处理

Analysis and Treatment on Abnormal Vibration of Turbine Generator Front Bearing of a Combined Cycle Unit

对某汽轮发电机前轴承异常振动进行了详细分析,指出转子质量不平衡是导致机组异常振动的主要原因。现场对发电机转子护环实施反对称加重后,彻底解决了该发电机前轴承异常振动问题。

Abnormal vibration of the front bearing of a turbine generator is analyzed in detail,showing clearly that the unbalanced rotor mass is the main cause of the abnormal vibration of the unit.After the anti-symmetric weighting onto the generator rotor retaining ring is implemented on site,the problem of abnormal vibration of the generator front bearing is completely solved.