绝大多数中小型轴流泵站,采用矩形开敞式进水池,其结构简单,施工方便。但是由于进水池各部位尺寸,均采用水泵厂说明书所提供的数据,经试验表明,这些数据均偏大,不但浪费材料,加大土方开挖量,增加工程造价,而且当泵站进水位较低时,容易产生表面漩涡,影响水泵效率,严重时引起机组气蚀、振动甚至无法工作。将用于大型泵站的肘形进水流道引用到中小型轴流泵站,与开敞式矩形和涡壳形进水池对比,经三年多来的反复试验,现已取得良好的试验成果,为新建和改造轴流泵站提供依据, Most small and medium-sized axial flow pump station, using rectangular open inlet, its simple structure, easy construction. However, due to the size of each part of the intake pool, the pump factory manual is used to provide the data, the test shows that these data are too large, not only a waste of materials, increase earthwork excavation, increase project cost, and when the pumping station into the water level Lower, prone to surface vortex, affecting the efficiency of the pump, causing severe cavitation, vibration and even unable to work. The elbow inlet channel for large pumping stations is used in small and medium-sized axial-flow pump stations. Compared with open-type rectangular and volute-shaped inlet tanks, after more than three years of repeated tests, good results have been obtained , To provide the basis for the construction and reconstruction of axial flow pumping stations,