| 混流泵叶片安放角对内涡结构及叶轮-导叶适应性的影响 |
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| 引用本文： | 赵斌娟,韩璐遥,刘雨露,廖文言,付燕霞,黄忠富.混流泵叶片安放角对内涡结构及叶轮-导叶适应性的影响[J].排灌机械工程学报,2022,40(2):109-114. |
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| 作者姓名： | 赵斌娟 韩璐遥 刘雨露 廖文言 付燕霞 黄忠富 |
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| 作者单位： | 1. 江苏大学能源与动力工程学院, 江苏 镇江 212013; 2. 江苏科技大学材料科学与工程学院, 江苏 镇江 215600 |
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| 基金项目： | 国家自然科学基金资助项目(51976078)。 |
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| 摘 要： | 转叶式混流泵的叶片安放角可以调节,当工况发生改变、叶片安放角调节后,叶轮-导叶的适应性将随之变化,进而影响到混流泵的水力性能.以一叶片安放角可取-4°,0°和4°的转叶式混流泵为研究对象,从涡结构的角度出发,探究叶片安放角改变对叶轮-导叶适应性的影响规律.研究结果表明:随着叶片安放角的增大,叶轮内部涡结构的大小在逐渐增...
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| 关 键 词： | 转叶式混流泵 叶片安放角 Q准则 涡结构 |
| 收稿时间： | 2020-10-13 |
Effects of blade placement angle on internal vortex structure and impeller-guide vane adaptability of mixed-flow pump |
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| ZHAO Binjuan,HAN Luyao,LIU Yulu,LIAO Wenyan,FU Yanxia,HUANG Zhongfu.Effects of blade placement angle on internal vortex structure and impeller-guide vane adaptability of mixed-flow pump[J].Journal of Drainage and Irrigation Machinery Engineering,2022,40(2):109-114. |
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| Authors: | ZHAO Binjuan HAN Luyao LIU Yulu LIAO Wenyan FU Yanxia HUANG Zhongfu |
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| Institution: | 1. School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 215600, China |
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| Abstract: | The blade placement angle of the rotary vane mixed-flow pump can be adjusted.When the working conditions change and the blade placement angle is adjusted,the adaptability of the impeller-guide vane will change accordingly,which will affect the hydraulic performance of the mixed-flow pump.A rotary vane mixed-flow pump with blade placement angles of-4°,0°and 4°was taken as the research object.From the perspective of vortex structure,the influence of the change of blade placement angle on the adaptability of the impeller and the guide vane was explored.The results show that with the increase of the blade placement angle,the size of the internal vortex structure of the impeller gradually increases,and the diameter of the vortex band surrounding the rim gradually increases,while the number of vortices in the channel of the guide vane gradually decreases.The size and strength of the vortex structure on the cover wall behind the outer edge of the guide vane are gradually increasing;the stronger vortex of the mixed flow pump is mainly concentrated on the surface of the blade and the wall;by adjusting the blade placement angle,the rotary vane mixed-flow pump can maintain high-efficiency operation in different flow ranges,but as the blade placement angle increases,the efficiency of the rotary vane mixed-flow pump gradually decreases due to the gradual increase of the vortex structure.The number of channel vortices in the guide vane increases with the decrease of the blade placement angle,which leads to the reduction of the head of the rotary vane mixed-flow pump;the impeller-guide vane adaptability of the rotary vane mixed-flow pump changes after that the blade placement angle is adjusted.When the placement angle is-4°,the match between the impeller and the guide vane is the best.The more deviated from-4°,the more vortex structures enter the guide vane from the impeller,and the worse the impeller-guide vane adaptability. |
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| Keywords: | rotating vane mixed flow pump blade placement angle Q criterion vortex structure |
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