工作转速下转轴碰磨振动的诊断处理

Analysis and Treatment on Vibration of Rubbing Rotor on Rated Speed

发生在某电厂1台300MW汽轮机低压转子轴承上的突发性振动,经过测试分析,诊断为工作转速下的转轴碰磨振动。通过揭低压缸检查找到了转轴碰磨振动的原因,并进行了初步分析和处理。

Abnormal vibration happened on a Turbine LP shaft of 300 MW unit in a power plant,By test and analysis.it is diagnosed a vibration of rubbing rotor on rated speed.Then disclose the LP case and found the cause of the rubbing rotor.Moreover,some preliminary analysis and treatment are done.