活动导叶翼型改变对导叶力特性的研究  

Study on the Characteristics of Guide Vane Force Due to the Change of Movable Guide Vane Airfoil

作　　者：李琪飞[1,2] 牟旭 唐红强 李占勇 佘孟明 LI Qi-fei;MU Xu;TANG Hong-qiang;LI Zhan-yong;SHE Meng-ming(School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;State Key Laboratory of Fluid Machinery and Systems,Lanzhou 730050,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]甘肃省流体机械及系统重点实验室,甘肃兰州730050

出　　处：《液压气动与密封》2025年第2期1-8,共8页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金(52066011)。

摘　　要：采用我国某抽水蓄能电站的水泵水轮机作为模型进行研究,针对其“S”特性,通过改变活动导叶翼型,并用不同的布置方式,将其装配在原导水机构中,基于SST k-ω湍流模型,通过数值模拟计算分析活动导叶翼型改变对水泵水轮机“S”特性的影响以及导叶力特性的影响。结果表明:改变导叶翼型能够有效地破坏活动导叶和转轮之间的高速水环,流体流入转轮的阻碍变小,转轮区的流态变好;同时,活动导叶翼型的改变对导叶径向力也有所改善,加入改型后的活动导叶,径向力的峰谷差值有所变小,对机组运行稳定性影响较好。The pump turbine of a pumped storage power station in China was used as a model for research,and according to its“S”characteristics,the movable guide vane airfoil was changed and assembled in the original water guide mechanism with different arrangement methods,and the influence of the change of the movable guide vane airfoil on the“S”characteristics of the pump turbine and the influence of the guide vane force characteristics were analyzed through numerical simulation based on the SST k-ωmodel.The results show that changing the airfoil of the guide vanes can effectively destroy the high-speed water ring between the active guide vanes and the impeller,reduce the obstruction of fluid flow into the impeller,and improve the flow state in the impeller area,and at the same time,the change of the movable guide vane airfoil also improves the radial force of the guide vane,and the peak-to-valley difference of the radial force becomes smaller after adding the modified movable guide vane,which has a good impact on the operation stability of the unit.

关 键 词：水泵水轮机 导叶翼型 无叶区 径向力 数值计算 

分 类 号：TH137[机械工程—机械制造及自动化] TK734[交通运输工程—轮机工程]