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。 Leakage of the reversing wheel (low specific speed Francis runner) wheel sealing device has a great influence on the axial water thrust of the runner. In this paper, taking Tianhuangping runner as an example, the leakage of Calculation method, the factors affecting the amount of leakage and its impact on unit operation.