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西昌市东河水电厂720千瓦机组,因水轮机与发电机容量不配套以及泥沙磨损破坏严重,水轮机运行效率很低,电厂委托我院进行水轮机技术改造。我院王巧、陈其秋和李国梁负责设计了改型新转轮(混流式D_1=71厘米),使水轮机与发电机容量匹配,更能适应电站引用流量情况,平均运行效率可提高4～6％。为了减轻泥沙磨损,延长大修间隔和减少大修电量损失,除了改善下环流线区域流态外,还采用了耐
Xichang Donghe Hydropower Plant 720 kilowatts generating units, due to the turbines and generators capacity is not complete and sediment damage is serious, turbine running efficiency is very low, the power plant commissioned by our hospital turbine technological transformation. Wang Qiao, Chen Qiuqiu and Li Guoliang of our institute are responsible for designing a modified new runner (Francis D_1 = 71 cm) to match the capacity of the turbine with the generator and better adapt to the flow quoted by the power station. The average operating efficiency can be increased by 4-6% . In order to reduce the sediment wear, extend the overhaul interval and reduce the overhaul power loss, in addition to improving the flow regime in the lower circulation line,