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介绍了峡江水电站的水轮机参数、水力设计及模型试验和结构设计特点。在水力设计方面,采用最先进的CFD计算软件,对过流部件进行优化,特别是转轮叶片,改进叶片进口头部的脱流,提高大流量区的效率及低水头的出力,并通过模型试验进行了验证。为了保证机组整体结构安全性,进行了大量的计算,包括对重要部件进行有限元分析。转轮采用缸动式结构,转轮室叶片转角范围内采用整体不锈钢板模压,并对筋板进行加强。主轴密封采用了可靠的盘根径向密封。导水机构采用弹簧连杆结构,单作用接力器,在重锤重力作用下关机,保证机组的安全性。
The turbine parameters, hydraulic design, model test and structural design of Xiajiang River Hydropower Station are introduced. In hydraulic design, the most advanced CFD calculation software is used to optimize the overcurrent components, especially the runner blades, to improve the flow of the inlet of the blade, to increase the efficiency and low head output of the large flow area, The test was verified. In order to ensure the overall structural safety of the unit, a large number of calculations have been made, including the finite element analysis of important components. The wheel adopts the cylinder-driven structure, the whole stainless steel plate is molded in the corner of the rotor chamber and the ribs are reinforced. Spindle seal with a reliable packing radial seal. Water guide mechanism with spring connecting rod structure, single-acting relay, the weight of gravity under the shut down, to ensure the safety of the unit.