碗米坡混流式机组水轮机主轴密封结构优化与改造

Optimization and improvement on shaft seal of Francis turbine-generator unit in Wanmipo Hydropower Plant

本文以碗米坡电厂机组为例,研究了在投产初期主轴密封出现的异常磨损问题的原因,提出了可行的改造方案,从而消除了投产以来困扰电厂安全稳定运行的隐患,提高了机组的运行可靠性。

By taking the Francis turbine-generator unit in Wanmipo Hydropower Plant as the study case,the causation of the abnormal wear of the shaft seal of the unit occurred during the initial period of its commissioning is studied herein,and then a feasible improvement scheme is put forward,thus the hidden trouble to impact the safe and stable operation of the hydropower plant since the commissioning is eliminated and the operation reliability of the unit is enhanced as well.