水轮发电机导轴承温度升高原因分析

Analysis on the Cause of Increasing Axial Pendulum of Hydrogenerator

本文主要介绍了某水电站水轮发电机导轴承问题升高的原因以及相应处理措施,本次出现故障的电站水轮机主要为冲击式水轮机,水导轴承主要为稀润滑油来带动转动油盆、斜油槽自循环筒式轴承,水轮机导轴承温度过高主要通过测试不同喷嘴下轴承的损耗量、冷却器进水温度以及出口水温差来判断温度升高原因,同时还进行了现场观察。根据观察及分析结果确定了采取油循环短路问题解决以及增加冷却水量的处理方案,方案实施后导轴承温度升高的问题得到了彻底的解决。实际处理过程中总结一些经验,现进行总结以期对筒式轴承设计提供一定的指导。

This paper mainly introduces the reasons of the increase of bearing capacity of hydroelectric generator in a hydropower station and the corresponding treatment measures. The failure of the power turbine is mainly the impact turbine. The water guide bearing mainly uses the dilute oil to drive the rotating oil The temperature of the bearing is very high, and the reason of the temperature rise is judged by testing the loss of the bearing under different nozzles, the temperature of the cooler inlet and the temperature difference of the outlet water. At the same time, the observation is also carried out. According to the observation and analysis results to determine the oil short circuit to solve the problem and increase the cooling water treatment program, the implementation of the program after the bearing bearing temperature problem has been completely resolved. The actual process of summing up some experience, are summarized in order to provide some guidance on the design of cylindrical bearings.