不同后导风锥对斜流风机性能的影响  

Effect of the Different Rear Guide Cones on the Performance of the Diagonal Fan

作　　者：李艺铭 王军[1] 尹国庆 王威 徐绍斌 林志良 Yi-ming Li;Jun Wang;Guo-qing Yin;Wei Wang;Shao-bin Xu;Zhi-liang Lin(School of Energy and Power Engineering;Foshan City Nanhai Jiuzhou Popula Fan Co.,Ltd.)

机构地区：[1]华中科技大学能源与动力工程学院 [2]佛山市南海九洲普惠风机有限公司

出　　处：《风机技术》2019年第4期19-24,共6页Chinese Journal of Turbomachinery

基　　金：国家重点研发计划项目(2018YFB0606101)

摘　　要：本文的研究对象为一款工业用后置导叶式斜流风机,基于改善斜流风机尾部流动状况,设计了三种不同结构的导风锥。采用数值模拟方法对原风机和三款加装不同导风锥后的风机的整机模型进行了稳态三维流场计算,对比分析了四种风机模型的气动性能和内流状况,计算证明在设计的三组导风锥中,平顶型导风锥效果最优,并对平顶型导风锥进行了试验验证。模拟和试验的结果表明:合理的导风锥结构能有效地改善斜流风机尾部流场的涡结构,减少尾部回流,降低流动损失,风机的全压和全压效率都有明显提高。The research object of this paper is an industrial rear guide vane type diagonal fan.Based on the improvement of the flow condition of tail of the diagonal fan,three different forms of guide cone structure are designed.The CFD method was used to calculate the steady three-dimensional flow field of the original diagonal fan and three models of fans with different guide cones.The aerodynamic performance and internal flow of the four fan models were compared and analyzed.The performance of trapezoidal wind cone is the best one in three guide cones.The optimal structure of the results was experimentally verified.The results show that the reasonable guide cone can effectively improve the vortex structure of the flow field at the tail of the diagonal flow fan,reduce the backflow of the tail,reduce the flow loss,and the total pressure and total pressure efficiency of the fan are obviously improved.

关 键 词：斜流风机 导风锥 气动性能 数值模拟 

分 类 号：TH432[机械工程—机械制造及自动化] TK05[动力工程及工程热物理]