基于PIV技术的混流式水泵水轮机转轮内流态特性研究  

Study on flow characteristics in the runner of Francis Pump-turbine based on piv technology

作　　者：任岩 毕亚雄 吴启仁 REN Yan;BI Ya-xiong;WU Qi-ren(School of Electric Power,North China University of Water Resources and Electric Power,Zhengzhou,Henan 450045,China;China Southern Power Grid,Guangzhou 510620,China;China Three Gorges New Energy Co.,Ltd.,100053,China)

机构地区：[1]华北水利水电大学电力学院,河南郑州450045 [2]中国南方电网公司,广东广州510620 [3]中国三峡新能源有限公司,北京100053

出　　处：《水动力学研究与进展（A辑）》2019年第6期720-725,共6页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金资助项目(51409095);河南省高等学校重点科研项目(17A480006);湖南省重点实验室开放基金项目(201601);华北水利水电大学青年科技创新人才支持计划~~

摘　　要：混流式水泵水轮机的稳定性对机组并网的安全性具有关键影响,转轮内的流态特性是分析水泵水轮机稳定性的重要依据。该文对转轮内流态特性进行了研究,首先,建立流动可视化PIV实验模型;利用相关法,根据采集的粒子图像的分辨率,确定相关域和搜索域;在实验用的模型水泵水轮机的特性曲线上选取12个典型工况点,分析其参数;利用PIV方法,得到各工况下转轮中的流态;最后,分析转轮叶片进口冲角和导叶开度对转轮内流态的影响,进一步明确了混流式水泵水轮机内部流态与运行工况之间的关系。The stability of Francis pump-turbine has a critical impact on the safety of the grid-connected unit.The flow characteristics in the runner are important basis in analyzing the stability of the pump-turbine.Firstly,the flow visualization PIV experimental model is established,then correlation method is used to determine the correlation domain and search domain according to the resolution of the collected particle image.12 typical operating conditions are selected on the characteristic curve of the experimental model pump turbine and analyzed.The PIV method is used to obtain the flow state in the runner under various working conditions.Finally,the influence of the inlet angle of the runner blade and of the opening degree of the vane on the flow state in the runner is analyzed,and the relationship between the internal flow state and operating conditions of the Francis pump is further clarified.

关 键 词：混流式水泵水轮机 转轮 流动可视化PIV技术 运行工况 

分 类 号：TK734[交通运输工程—轮机工程]