330 MW汽轮发电机组轴瓦漏油研究

Research on the Bearing Bush Oil Leakage Failure in a 330 MW Turbo-Generator Set

为解决某汽轮发电机组轴瓦存在严重漏油的问题,找出主机润滑油系统负压无法得到正常建立是轴瓦漏油的根本原因,提出封堵润滑油系统漏点、更换排烟风机入口滤芯及出口阀门、调整轴瓦间隙等改造方案并加以实施,使主机润滑油系统负压得以正常建立。

To solve the problem of severe oil leakage existing in the bearing bush of a turbo-generator set,an analysis was conducted,and subsequently the problem was found to be caused by that the negative pressure of the main engine lubricating oil system cannot be established normally,after which,the following countermeasures were proposed and taken,such as plugging the leakage point in the lubricating oil system,replacing the inlet filter element and outlet valve of the exhaust fan,and adjusting the gap of the bearing bush,so as to establish normal negative pressure for the main engine lubricating oil system.