混流可逆式转轮密封装置的泄漏量及其对机组运行的影响

Analysis of the leakage rate francis of the francis pump-turbine runner's sealing device and its effect on operation of the set

可逆式转轮 (低比速混流式转轮 )转轮密封装置的泄漏量对转轮受到的轴向水推力有很大的影响 ,本文以天荒坪转轮为例 ,探讨了泄漏量的计算方法、影响泄漏量的因素及其对机组运行的影响。

Francis pump-turbine (low specific speed) runner's axial hydraulic thrust has great effects on the leakage rate of the sealing device. This paper gives an example of Tianhuangping plant, and discusses the calculation method and influencing factors on the leakage rate, and also the effect on the set's operation.