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贯流混流轴伸式水轮机的水流基本上沿轴向流经水轮机,因此它具有现代贯流式水轮机的效率高、出力大、体积小(只有混流式水轮机的1/7～1/4)、重量轻的优点。又由于它的转轮叶片数较多,强度高,气蚀系数小,因此它具有现代混流式水轮机能适用于高水头的特点。该型水轮机的另一特点是能与发电机布置在同一平面上,且尾水管又是S型的(见图1),因此,机器占有的空间、厂房的建筑尺寸、要求尾水的开挖量以及起重设备的容量均较小,从而能使电站
The flow of the cross-flow axial-flow turbine runs substantially axially through the turbine, so it has the advantages of high efficiency, large output and small size (only 1/7 to 1/4 of the mixed-flow turbine) Lightweight advantages. And because of its larger number of runner blades, high strength, small cavitation coefficient, it has the characteristics of a modern Francis turbine for high head. Another feature of the turbine is that it can be placed on the same plane as the generator and the draft tube is S-shaped (see Figure 1). Therefore, the space occupied by the machine, the building dimensions of the plant, the excavation of the tailrace Volume and lifting equipment are small capacity, which can make the power plant