曲率半径对弧形斗式风扇轴流及离心特性的影响规律研究  

Study on the influence of curvature radius on axial flow of arc-shaped bucket fan and centrifugal characteristics

作　　者：刘来全 戴玥 马越 薛超 LIU Laiquan;DAI Yue;MA Yue;XUE Chao(Guangdong yuehai Pearl River Delta Water Supply Co.,Ltd.,Guangzhou 511455,China;Shanghai Electric Machinery Co.,Ltd.,Shanghai 200240,China)

机构地区：[1]广东粤海珠三角供水有限公司,广州511455 [2]上海电气集团上海电机厂有限公司,上海200240

出　　处：《上海大中型电机》2022年第4期12-16,45,共6页Shanghai Medium and Large Electrical Machines

摘　　要：针对弧形斗式风扇原型在实际运行过程中引发气动性能降低问题,提出一种优化方案。以现有的弧形斗式风扇为研究对象,利用CFD技术对轴向及径向流场下不同曲率半径弧形斗式风扇进行数值分析。结果表明:与原始风扇相比,增大曲率半径可延缓风扇流动分离,提高风扇进出口压差,提升整体气动性能,进而增大风扇通风效率;在考虑局部损失、沿程损失及经济性时,曲率半径与风扇气动性能呈二次曲线关系,存在最佳曲率半径。An optimization scheme is proposed aiming at the problem of aerodynamic performance degradation caused by the prototype of arc-shaped bucket fan in actual operation. Taking the existing arc-shaped bucket fans as the research object, numerical analysis is made on the arc-shaped bucket fan with different radius of curvature by use of CFD technology, with the results showing that, compared with the original fan, increasing the curvature radius can delay the flow separation of the fan, improve the pressure difference between the inlet and outlet of the fan, improve the overall aerodynamic performance so as to increase the ventilation efficiency of the fan. When considering partial loss, linear loss and economy, the curvature radius has a quadratic relationship with the aerodynamic performance of the fan, and there is an optimal curvature radius.

关 键 词：弧形斗式风扇 轴流离心特性 风扇气动性能 全压 轴功率 

分 类 号：TM303[电气工程—电机]