| 轴流泵叶轮的三维多参数设计及试验 |
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| 引用本文： | 俞芸芸,周大庆,戴启璠,梁豪杰,仲子夜.轴流泵叶轮的三维多参数设计及试验[J].排灌机械工程学报,2019,37(5):393-399. |
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| 作者姓名： | 俞芸芸 周大庆 戴启璠 梁豪杰 仲子夜 |
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| 作者单位： | 1. 河海大学能源与电气学院, 江苏 南京 211100; 2. 江苏省灌溉总渠管理处, 江苏 淮安 223200 |
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| 摘 要： | 为解决南水北调某泵站改造工程中轴流泵的设计问题,利用BladeGen软件进行了轴流泵叶轮的三维多参数设计,建立了轴流泵全流道模型并进行结构化网格划分、数值模拟和试验验证,分析了不同叶轮参数对轴流泵外特性的影响,并对影响较大的参数即翼型中心线角度方程的3种方案进行了叶片压力和流速分布对比分析及空化性能分析.计算结果表明:通过对比,最终确定叶轮选取方案6,即轮毂比为0.40,叶片轮缘截面中心点处厚度为10 mm,叶片翼型B;该轴流泵在设计流量工况下,扬程为4.90 m,装置效率为79.76%,叶轮效率为92.19%,符合设计要求,且与试验结果基本一致;利用BladeGen软件可对轴流泵叶轮进行较为精确的三维化设计,可减小原始叶轮设计及优化过程中反复建模的工作量,提高了轴流泵叶轮优化的效率.
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| 关 键 词： | 轴流泵 叶轮设计 多参数 BladeGen 模型试验 |
| 收稿时间： | 2017-07-12 |
Three-dimensional multi-parameter design and experiment of axial-flow pump impeller |
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| YU Yunyun,ZHOU Daqing,DAI Qifan,LIANG Haojie,ZHONG Ziye.Three-dimensional multi-parameter design and experiment of axial-flow pump impeller[J].Journal of Drainage and Irrigation Machinery Engineering,2019,37(5):393-399. |
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| Authors: | YU Yunyun ZHOU Daqing DAI Qifan LIANG Haojie ZHONG Ziye |
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| Institution: | 1. College of Energy & Electrical Engineering, Hohai University, Nanjing, Jiangsu 211100, China; 2. Main Irrigation Channel Management Division of Jiangsu Province, Huaian, Jiangsu 223200, China |
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| Abstract: | To solve the design problem of the axial-flow pump in a pumping station refurbishment projection in the South to North Water Diversion East Route, three-dimensional(3D)multi-parameter design of an axial-flow pump impeller was carried out by using BladeGen software. The whole axial-flow pump geometric model with designed impellers was established, and a structured mesh in the fluid domain was generated. The influences of design parameters of the impeller on the pump external hydraulic performance were analyzed through numerical simulations. Furthermore, the effects of a dominant parameter i.e., blade wrapping angle on pressure and velocity distributions over the blades and cavitation performance were clarified in terms of three wrapping angle profiles. According to the numerical results, design case 6, in which the hub ratio was 0.40, the maximum section thickness in the mid-chord was 10mm, and the blade section was airfoil B, was chosen eventually. In this design case, the pump head was 4.90m, the pump efficiency with suction and discharge pipes was 79.76%, and the impeller efficiency was 92.19% at the design flow rate. These performance parameters has met the design requirements, and were consistent with the corresponding experimental measurements. Therefore, the BladeGen software could produce more accurate 3D multi-parameter designs for an axial-flow pump impeller to reduce both number of design cases and workload in geometry modeling during the optimization process, and result in an improved pump efficiency. |
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| Keywords: | axial-flow pump impeller design multi-parameter BladeGen model experiment |
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