上汽1000MW机组#8轴瓦振动大原因分析及处理

Cause Analysis and Treatment of Large Vibration of#8 Bearing Bush of SAIC 1000MW Unit

汽轮发电机组的异常振动对整个发电机组有着重大的影响,不仅振动会减少设备的使用寿命,也会造成设备损坏,甚至发生灾难性事故。我公司上汽1000MW燃煤汽轮发电机组#2机,于2016年12月29日投入运行。在运行过程中发现#8轴瓦轴振异常,本文介绍此次#2机组#8轴瓦解体检查情况,分析导致轴瓦振动异常的原因,介绍处理过程以及处理结果,为彻底解决#8轴瓦振动大缺陷提供指导依据,同时为处理类似轴瓦振动问题提供解决思路和经验。

The abnormal vibration of the steam turbine generator unit has a significant impact on the entire generator unit.The vibration will not only reduce the service life of the equipment,but also cause equipment damage,and even catastrophic accidents.Our company SAIC 1000MW coal-fired steam turbine generator unit#2 was put into operation on December 29,2016.During the operation,abnormal vibration of#8 bearing bush was found.This paper introduces the disassembly and inspection of#8 bearing bush of#2 unit,analyzes the causes of abnormal vibration of bearing bush,introduces the treatment process and results,and provides guidance for thoroughly solving the large vibration defects of#8 bearing bush,and provides solutions and experience for handling similar vibration problems of bearing bush.