Study on utilization of micro hydropower using high efficiency and non clog pump reverse water turbine

进入水轮机的枝叶堵塞叶轮通道，造成非运行状态或减产状态，一直是微水电利用中的一大难题。以单叶排污泵作为反向水轮机，通过数值分析和实验，阐明了水轮机特性与水泵特性之间的内部流动及相互关系。此外，还发现采用双叶倒置式水轮机可以实现高效率和减小径向推力。

It has been a major challenge that twigs and leaves flowing into the water turbine block the impeller passage, causing non operating condition or output reduction state in the micro hydropower utilization. By using the single-blade sewage pump as reverse water turbine, it was clarified by numerical analysis and experiment theinternal flow and relationship of water turbine characteristics and pump characteristicsin this study. Moreover, it was found to be able to achieve high-efficiency and the reduction of the radial thrust by using the two-blade reverse water turbine.