运行工况对水轮机活动导叶表面泥沙浓度分布的影响  

Study on the Influence of Operating Conditions on Sediment Concentration Distribution on the Surface of Turbine Guide Vanes

作　　者：梁柱 赵玉忠 王昌林[1] 谈泰权 陈佳瑞 卢加兴 刘小兵[2] LIANG Zhu;ZHAO Yuzhong;WANG Changlin;TAN Taiquan;CHEN Jiarui;LU Jiaxing;LIU Xiaobing(Yingxiuwan Hydropower General Plant of State Grid Sichuan Electric Power Company,Chengdu 611830,Sichuan,China;Key Laboratory of Fluid and Power Machinery of Ministry of Education,Xihua University,Chengdu 610039,Sichuan,China)

机构地区：[1]国网四川省电力公司映秀湾水力发电总厂,四川成都611830 [2]西华大学流体及动力机械教育部重点实验室,四川成都610039

出　　处：《水力发电》2021年第5期92-94,126,共4页Water Power

基　　金：国家重点研发专项项目资助(2018YFB0905200);国网四川省电力公司科技项目资助(521901180004)。

摘　　要：采用标准k-ε模型对水轮机内部沙水流动进行数值模拟,研究了不同工况下映秀湾电站活动导叶泥沙分布情况。研究结果表明,活动导叶磨损主要集中在头部且工作面比背面磨损量大,泥沙颗粒在活动导叶底部有堆积。活动导叶泥沙绕流速度分布规律相似,并随着出力的增加头部绕流速度明显增大。The standard k-εmodel is used to simulate the sand-water flow inside the hydro turbine,and the sediment distribution on the surface of guide vanes in Yingxiuwan Hydropower Station under different operating conditions is studied.The results show that the wear of guide vane is mainly concentrated in vane head,the wear of the working face is larger than that of the back face,and the sediment particles are accumulated at the bottom of the guide vanes.The velocity distribution of the sand around the guide vanes is similar,and with the increase of output,the flow velocity around the vane head increases obviously.

关 键 词：水轮机 活动导叶 数值模拟 泥沙磨损 

分 类 号：TM312[电气工程—电机]