锦屏一级水电站大轴中心补气系统的改造优化

Modification and Optimization of the Central Air Supply System of the Main Shaft of Jinping I Hydropower Station

参考大轴中心补气系统在水电站运行中存在的问题,结合锦屏一级水电站自身发现的问题,对锦屏一级水电站大轴中心补气系统可能存在的运行风险进行分析,提出大轴中心补气系统的改造和优化措施。改造后,大轴补气浮球式补气阀动作可靠,大轴补气中心管密封良好。随着大轴补气系统的不断改造和优化,目前锦屏一级水电站大轴补气系统整体运行安全可靠。锦屏一级水电站在大轴补气系统遇到的问题和改进措施为尾水水位相对较高的立轴混流式水轮发电机组的中心补气系统提供了较大的参考价值。

Referring to the problems existing in the operation of the main shaft central air supply system in the hydropower station,combined with the problems found in Jinping I Hydropower Station,this paper analyzes the possible operation risks of the main shaft central air supply system in Jinping I Hydropower Station,and proposes the modification and optimization measures of the main shaft central air supply system.After modification,the floating ball type air supply valve of main shaft air supply has reliable operation,and the central pipe of main shaft air supply is well sealed.With the continuous modification and optimization of the main shaft air supply system,the overall operation of the main shaft air supply system of Jinping I Hydropower Station is safe and reliable.The problems and improvement measures taken in the main shaft air supply system of Jinping I Hydropower Station provide a great reference value for the central air supply system of vertical shaft Francis turbine generator set with relatively high tailrace water level.