摘要
对高水头水电站混流式水轮机导叶泥沙磨损进行了试验研究与数值模拟计算,获得了常用于水轮机活动导叶S135和ZG06Cr13Ni5Mo材料,以及用于固定导叶1Cr18N9Ti和Q345的泥沙磨损规律,拟合出泥沙磨损率计算公式。结果表明:泥沙绕流速度比泥沙质量浓度对磨损率的影响高2个数量级,导叶吸力面磨损相对于压力面较严重,导叶头部和尾部出现明显纹路、斑点和缺口,用于活动导叶的S135材料和用于固定导叶的1Cr18N9Ti材料的耐磨性较好。
Experimental study and numerical calculation were conducted on the sediment abrasion over turbine guide vanes in a high head hydropower station to find the wear law of S135 and ZG06 Cr13 Ni5 Mo materials commonly used for moving guide vanes,and 1 Cr18 N9 Ti and Q345 for fixed guide vanes of hydraulic turbines,after which,the calculation formula of sediment wear rate was fitted.Results show that the influence of sediment velocity is higher than that of sediment concentration by two orders of magnitude.The wear on suction surface of guide vanes is more serious than on pressure surface,and obvious lines,spots and gaps could be observed in the head and tail of guide vanes.Both the S135 for moving guide vane and the 1 Cr18 Ni9 Ti for fixed guide vane have high resistance to sediment erosion.
作者
田文文
刘小兵
李佳楠
袁帅
鲁思阳
李叶兵
TIAN Wenwen;LIU Xiaobing;LI Jia'nan;YUAN Shuai;LU Siyang;LI Yebing(Key Laboratory of Fluid and Power Machinery,Ministry of Education,Xihua University,Chengdu 610039,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2020年第8期686-692,共7页
Journal of Chinese Society of Power Engineering
基金
国家自然科学基金资助项目(51279172)
四川省流体机械重点实验室开放研究基金资助项目(szjj2016-002)
西华大学创新基金资助项目(ycjj2018192)。
关键词
混流式水轮机
导叶
泥沙磨损
试验研究
mixed-flow hydroturbine
guide vane
sediment abrasion
experimental test
