某600MW汽轮发电机组振动故障分析与处理  

Analysis on Vibration Failure of 600 MW Power Generation Unit and Solving Measures

作　　者：常鑫[1] 傅行军[1] 

机构地区：[1]东南大学火电机组振动国家工程研究中心,江苏南京210096

出　　处：《江苏电机工程》2011年第6期13-16,共4页Jiangsu Electrical Engineering

摘　　要：某台600 MW汽轮发电机组在大修后带负荷运行中,3X和5X轴的振动较大,4号瓦和6号瓦的瓦振较大;在降速过程中4号瓦、5号瓦和6号瓦出现不同程度的二倍频分量。结合机组检修过程及动平衡过程对上述振动现象进行了分析,指出质量不平衡、轴承紧力不足以及联轴器平行不对中是引起上述振动的原因,并通过动平衡方法以及增加轴承紧力,使得振动故障得以解决。Vibration failure occurred to one 600 MW steam turbine after the scheduled maintenance.Large vibration was discovered at 3X and 5X during operation duration,while 2 times frequency components were found during deceleration process at No.4,5 and 6 tiles.According to the maintenance and dynamic process,the mentioned issues are analyzed in the paper,and mass unbalance,insufficient force on bearing and misalignment of coupling are believed to be the main reasons.This problem has been successfully solved through dynamic balance method and enhancing bearing force.

关 键 词：汽轮发电机组 转子振动 动平衡 

分 类 号：TK261[动力工程及工程热物理—动力机械及工程] TK268.1