CC12-4.9/1.27/0.294型汽轮机组振动特点及消除

Vibration Features of Type CC12-4.9/1.27/0.294 Steam Turbine Unit and Its Elimination

利用矢量分析和影响系数法对发电机转子进行一阶动平衡 ,消除转子过临界振动 ;对机组突发性振动的成因进行了频谱分析 ,确认油膜振荡的振动特征并加以消除。

After first order dynamic balance of generator rotor by means of vector analysis and influence factor method, the across critical speed vibration of the rotor is eliminated. Through frequency spectrum analysis, the causes of sudden vibration of the unit are found out, and confirm that has the feature of oil film vibration, and then is eliminated.