混流式水轮机轴向水推力计算公式研究  

Research on the Calculation Formula of Axial Hydro-thrust of Francis Turbine

作　　者：赵玺[1] 赖喜德[1] 苟秋琴[1] 朱李[1] 唐健[1] 

机构地区：[1]西华大学能源与环境学院,成都610039

出　　处：《中国农村水利水电》2015年第5期172-175,共4页China Rural Water and Hydropower

基　　金：国家自然科学基金资助项目(51379179);西华大学研究生创新基金资助项目(ycjj2014179)

摘　　要：混流式水轮机轴向水推力是机组设计的重要参数,其值的准确性对机组的安全运行具有重要的现实意义。本文提出一个新的混流式水轮机轴向水推力的计算公式,可计算不同工况下的轴向水推力。结合某水电站运行参数分别利用该公式、CFD数值模拟和解析计算3种方法进行了轴向水推力的比较计算,并对这3种方法进行了对比分析。结果表明,该公式计算简便,与流量、水头、转速等参数结合紧密,具有良好的计算精度。The axial hydro-thrust of Francis turbine is an important data in unit design,and its accurate calculation has an important practical significance.A new formula that can calculate axial hydro-thrust of Francis turbine under different working conditions is put forward in this paper.Then based on the operational parameters of a hydropower station,three calculation methods are used to calculate axial hydro-thrust and a comparative analysis is made and they are the formula,CFD numerical simulation and analytic calculation.The results show that the formula is simple in computation and closely combined with parameters like flow,head and speed,and its calculation accuracy is good.

关 键 词：混流式水轮机 轴向水推力 计算公式 CFD数值模拟 

分 类 号：TK733.1[交通运输工程—轮机工程] TK730.2[动力工程及工程热物理—流体机械及工程]