含沙河流水电站水轮机吸出高度的试验研究  

Experiment of water Turbine Suction Height for Hydroelectric Station in Sand Carrying River

作　　者：段生孝[1] 党云平[1] 闵占奎[1] 程则久 

机构地区：[1]甘肃省电力试验研究所,北京水利水电科学研究院

出　　处：《水力发电学报》1995年第3期56-63,共8页Journal of Hydroelectric Engineering

基　　金：水利;电力部科研基金

摘　　要：水轮机吸出高度是水电站设计时必须确定的一个重要参数。迄今为止，国内外都是在以清水为介质的水轮机模型试验中确定空化数，然后按容许的空蚀计算吸出高度，但在我国众多的含沙河流中则不适用。为了探讨这个新课题，我们进行了不同含沙量的吸出高度试验，试验是在黄河上盐锅峡水电站旁新建的试验装置上进行的，试验结果表明：在各种含沙量及吸出高度时均有失重最大值，这为我国含沙河流确定吸出高度和安装高程提供了新的参考依据。Suction height is an important parameter in hydroelectric station design. Sofar,suction height has been studied in clear river. But it is very difficult to determine abrasion effect for the case of sand carrying rivers. In order to solve this problem, a new.test rig has been used. This paper introduced the results of tests with various suction heights and various carried sand in comparison with rate of lost mass of metals. The experimental conclusion is that there is a peak under different suction heights with the same content of sand. This may be used as a new route to determine suction hight.

关 键 词：含沙河流 水轮机 吸出高度 水电站 

分 类 号：TV734[水利工程—水利水电工程]