由于水输机尾水管能收回很大的水流能量,因此,在水电站的建设中如何选择最有利的尾水管型式及尺寸是值得仔细研究的。采用水输机制造厂经过模型试验以后所得到的并已列为标准的尾水管尺寸,应该认为是比较恰当的,因为它对于水流能够提供良好效率的条件。但是由于 Because of the large water flow energy recovered by the tail pipe of a water transporter, it is worth to carefully study how to choose the most suitable tail pipe type and size in the construction of a hydropower station. The size of the draft tube, which has been obtained after model tests by a water turbine manufacturer and is already listed as a standard, should be considered appropriate because it provides good efficiency for the flow of water. But due to