余能回收水轮机叶片参数化设计与性能研究  

Research on Blade Parametric Design and Performance of Hydraulic Energy Recovery Turbine

作　　者：李延频[1,2] 刘安然 陈德新 LI Yan-pin;LIU An-ran;CHEN De-xin(College of Energy and Power Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,Henan Province,China;School of Water Conservancy,North China University of Water Resources and Electric Power,Zhengzhou 450046,Henan Province,China)

机构地区：[1]华北水利水电大学能源与动力工程学院,河南郑州450046 [2]华北水利水电大学水利学院,河南郑州450046

出　　处：《中国农村水利水电》2023年第8期229-233,240,共6页China Rural Water and Hydropower

基　　金：国家自然科学基金资助项目(51579104)。

摘　　要：为便于水轮机叶片设计操作和形状控制,建立了叶片参数化设计方法并应用于微型余能回收水轮机。首先,基于轴面流线积分方程推导得到叶片骨线的参数化公式并给出设计流程图和计算表。然后,分析了余能回收水轮机的特点,并针对输水管网余能回收案例进行水轮机参数化设计。最后,通过数值仿真对余能回收水轮机全流道进行计算与分析。参数化设计过程中得到叶片包角、安放角等参数曲线,通过调整叶片包角分布曲线可以改变叶片口速度矩分布。经参数化方法设计得到的水轮机内部流场均匀,最优数值预测效率达93.6%。通过试验验证机组运行良好,水轮机运行效率约88.3%,基本满足使用要求。研究成果为微型余能回收水轮机的设计提供参考。One parametric design method is suggested for the convenience of blade design operation and shape control,which is firstly used in the design process of hydraulic energy recovery turbine.Firstly,the theoretical models of parametric design is established based on the derivation of meridional streamline integral equations,meanwhile the flow chart and calculation table are offered.Then the characteristics of hydraulic energy recovery turbine are analyzed.Moreover,the process of parametric design is carried out for a case of hydraulic energy recovery in water distribution network.Finally,the flow field and performance are studied by numerical simulation.The curves of wrap angle and setting angle are obtained in the process of parametric design,after that the velocity moment at blade outlet was changed by control of wrap angle distribution.The flow field is uniformly and maximum numerical predicted efficiency has reached 93.6%.Moreover the feasible of hydraulic energy recovery turbine is verified by test and the operating efficiency has reached 88.3%.The conclusions can provide guidance in the design process of hydraulic energy recovery turbine.

关 键 词：余能回收水轮机 转轮叶片 参数化设计 流线积分方程 

分 类 号：TK73[交通运输工程—轮机工程]