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大狄克桑斯坝是世界上已建成的最高的混凝土重力坝,坝高285m,库容4亿m~3,已于1962年建成。原有两座电站总装机68万 kW,至今已投入运行30年。为满足日益增长的峰荷需求,瑞士拟利用该水库,扩建一个电站,装机3台,最大容量120万 kW。计划在大坝上新建一个进水口,通过长15km 的引水隧洞,后接地下调压井和地下厂房,内装3台5个喷嘴的冲击式水轮机组,直径4.65m,重28t,单机最大出力40万 kW,是迄今世界上最大容量的冲击式水轮机组。其水头高达1883m,也是世界上最高水头的水轮机组。
The Dixunsi Dam is the tallest concrete gravity dam built in the world with a height of 285m and a storage capacity of 400 million m ~ 3. It was completed in 1962. The original total installed capacity of two power plants 680,000 kW, has been put into operation for 30 years. In order to meet the increasing peak load demand, Switzerland intends to use the reservoir to expand a power station with installed capacity of 3 units with a maximum capacity of 1.2 million kW. It is planned to build a new water inlet on the dam, which will be equipped with 3 sets of 5-nozzle impact turbine with a diameter of 4.65m, a weight of 28t and a single maximum output of 40 through a diversion tunnel of 15km in length followed by underground surge tank and underground plant The 10,000 kW is by far the largest capacity impulse turbine in the world. Its head up to 1883m, is also the world’s highest water head turbine.