水轮机工作密封压力波动缺陷处理

Treatment for Pressure Fluctuation of Hydraulic Turbines Working Seals

针对葛洲坝水电站及其他几个水电站大型水轮发电机组在运用过程中工作密封经常出现压力波动的情况,提出了在小规模检修状态下采用调整水轮机密封环水平度以及局部加垫的方法来解决压力波动问题。实践运行证明,该方法具有工程有效性,为水轮机工作密封的安全运行提供了保障。

Owing to the fact that pressure fluctuation of hydraulic turbine working seals happens frequently while large hydraulic generators of Gezhouba Hydropower Station and several other hydropower stations are operating.It is proposed that in period of small-scale repairing,adjusting the water level degree of hydraulic turbine seal rings and local padded are adopted to solve the phenomenon of pressure fluctuation.Practice proves that the method is valid for engineering projects,and offers safe operation assurance for the hydraulic turbine working seal.