| 含沙水流在水轮机中的流动分析研究 |
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| 引用本文： | 李仁年.含沙水流在水轮机中的流动分析研究[J].兰州理工大学学报,1992(1). |
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| 作者姓名： | 李仁年 |
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| 作者单位： | 甘肃工业大水力机械工程系 |
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| 摘 要： | 本文从固液两相流的动量方程出发,研究了水轮机蜗壳、导水部件及转轮中的含沙水流运动规律。推证了含沙水流在水轮机中流动时,其沙子和液体的流动属于分离流动,即沙子和液体的运动速度和运动角是不相同的,且沙子质量越大,差值越大;并指出在水头相同时,水中含沙时水轮机的效率一般低于清水时的效率;进而分析了水轮机各过流部件的泥沙摩损规律。
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| 关 键 词： | 水轮机 两相流动 含沙水流 泥沙摩损 过流部件 速度三角形 |
Study and Analysis of Silt-laden Water Flow in Hydraulic Turbine |
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| Li Rennian.Study and Analysis of Silt-laden Water Flow in Hydraulic Turbine[J].Journal of Lanzhou University of Technology,1992(1). |
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| Authors: | Li Rennian |
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| Institution: | Dept. of Hydraulic Machinery Engineering |
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| Abstract: | Proceeding from momentum equation of two phase flow with solid and liquid, the flow pattern of silt-laden water in spiralcasing,wicket-gate,and the runner of hydraulic turbine are studied in this paper. It is proved that the flow of silt-laden liquid is a separate flow, namely,the flow rate and flow angle of silt and liquid are nonidentical in hydraulic turbine. The greater the mass content of silt,the greater is their D-value. Moreover,it is point out that the efficiency of hydraulic turbine operated with silt-laden water flow is less than that with clean water flow under the same head. Further more,the silt abrasive erosion pattern of flow-passing parts in hydraulic turbine is analyzed also in this paper. |
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| Keywords: | hydraulic turbine two phase flow silt carrying flow silt abrasive erosion flow-passing parts velocity triangle |
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