目前泵行业中,对离心泵和混流泵叶轮一般均采用一元理论设计方法,对轴流泵叶轮一般采用奇点法、升力法设计。对于高n_s的混流泵叶轮其流道形状及内部流动情况应当说更接近于轴流泵,但未见到用奇点法设计的先例,因此本文介绍的混流泵叶轮奇点法设计是一有意义的探索,当然也有待实践检验和完善。 In the current pump industry, the centrifugal pump and the mixed flow impeller are generally used one-dimensional theoretical design method, the axial flow pump impeller commonly used singular point method, lift design. For high n_s Francis pump impeller its flow channel shape and internal flow should be said to be closer to the axial flow pump, but did not see the singular point method designed precedent, so this article introduces the mixed flow pump impeller singular point method is a The exploration of meaning certainly needs to be tested and perfected by practice.