摘要
阻力型水轮机被广泛应用于低流速场景的小规模水力发电,可安装在管道中为管道监测远传设备实现自供电。为进一步提高阻力型管道水轮机的效率,采用CFD软件对4种不同叶片横截面形状的水轮机进行水动力性能分析,研究不同叶片横截面形状对阻力型管道水轮机性能的影响;同时提出一种叶片折弯变形优化方法,对水动力性能表现最优的叶片进行折弯处理,并研究不同叶片折弯角对阻力型管道水轮机水动力性能的影响。研究结果表明:在所分析的四种叶片横截面形状中,JJ型叶片总体性能表现最优。当对JJ型叶片增加一个折弯角后,水轮机的效率得到了进一步的提升,且叶片折弯角的最佳取值范围为10°~20°。研究结果可为阻力型管道水轮机的叶片优化设计提供参考。
The drag-type turbine is extensively utilized for small-scale hydropower generation in low-flow scenarios and can be installed in pipelines to enable self-powering for wireless monitoring devices.To enhance the efficiency of the drag-type pipeline turbine,CFD software is employed to analyze the hydrodynamic performance of four different blade cross-sectional shapes of the turbine,and investigate the impact of these different blade cross-sectional shapes on the performance.Meanwhile,a bending optimization scheme is proposed to bend the blade with the best hydrodynamic performance,and the impact of different blade bending angles on the hydrodynamic performance of turbine is in-vestigated.The research results show that the crescent-shaped JJ type blade outperforms the other three blade cross-sectional shaped ana-lyzed.Moreover,the turbine’s efficiency is further enhanced by incorporating a bending angle to the JJ type blade,and the optimal range of the blade bending angle is 10°~20°.These findings offer valuable insights for optimizing the drag-type blades in pipeline turbines.
作者
刘铭滨
成思源
李永健
杨雪荣
LIU Ming-bin;CHENG Si-yuan;LI Yong-jian;YANG Xue-rong(School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong Province,China)
出处
《中国农村水利水电》
北大核心
2024年第9期137-144,共8页
China Rural Water and Hydropower
基金
广州市水务科技协同创新中心建设项目资助(SL2023B04J00003)。
关键词
阻力型水轮机
叶型优化
数值模拟
供水管道
水电开发
drag-type hydraulic turbine
blade optimization
numerical simulation
water supply pipelines
hydropower development
