水流含沙量和流速对水轮机磨蚀性能的影响  

Effects of Sediment Concentration and Flow Velocity on the Abrasion of Hydraulic Turbine

作　　者：任岩[1,2] 楚清河[1] 周兵[3] 李延频[1] 

机构地区：[1]华北水利水电学院,河南郑州450011 [2]河海大学,江苏南京210098 [3]国家知识产权局专利审查协作中心机械处,北京100091

出　　处：《水力发电》2012年第2期47-49,共3页Water Power

基　　金：水利部"948"计划技术创新推广转化项目(CT200207)

摘　　要：水流含沙量和流速是影响水轮机磨蚀性能的非常重要的两大因素,其影响规律对水轮机磨蚀的防治有很重要的理论意义和参考价值。采用黄河原型沙,通过试验研究不同泥沙含量和不同水流流速条件下水轮机材料的磨蚀外貌、磨蚀失重量和磨蚀失重率。通过对试验结果进行定性和定量分析,得到水轮机磨蚀与水流含沙量、磨蚀与水流流速之间的关系,并得到数学回归式,找出水轮机磨蚀的基本规律,为多泥沙河流水轮机的参数选择与磨蚀防治提供了依据。The sediment concentration and velocity of water are two important factors affecting the abrasion characteristic of hydraulic turbines. By using the real sand in Yellow River, the abrasion appearance, mass loss and mass loss rate of hydraulic turbine are studied by experiments under different sediment concentrations and flow velocities. The results are qualitatively and quantitatively analyzed and the mathematical regression formulas are gained for describing the relationships between the abrasion and the sediment concentrations and flow velocities. The study can provide a basis for the parameters＇ selection and abrasion protection of hydraulic turbines in rich-sediment rivers.

关 键 词：水轮机磨蚀性能 含沙量 流速 磨蚀失重量 磨蚀失重率 

分 类 号：TK730.53[交通运输工程—轮机工程] TV131.63[动力工程及工程热物理—流体机械及工程]