| 引用本文: | 林鹏程,柏 周,汤方平,等.不同导叶张数对双向竖井贯流泵装置影响的受力分析[J].灌溉排水学报,2023,42(3):82-89. |
| LIN Pengcheng,BAI Zhou,TANG Fangping,et al.不同导叶张数对双向竖井贯流泵装置影响的受力分析[J].灌溉排水学报,2023,42(3):82-89. |
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| 摘要: |
| 【目的】研究竖井贯流泵装置在不同导叶片数影响下的受力情况。【方法】本文采用CFD方法，以某工程双向竖井贯流泵装置为研究对象，利用TurboGrid和Icem进行网格划分，基于RNG k-ε湍流模型，对4、5、6、8片导叶片数的双向泵装置在-2°安装角度下分别取0.85Q、Q、1.15Q的流量工况进行数值计算和试验研究。【结果】正反向运行情况下，导叶片数为4、5、6、8片的情况下泵装置轴向受力平均值接近，当导叶片数与叶片数成倍数关系时，轴向力脉动峰值显著增大，影响装置安全运行；叶轮径向受力均较小，可以忽略对工程的影响。将导叶片数设置为偶数时，可降低导叶受到的径向合力。【结论】在实际设计生产过程中，应当避免使导叶片数与叶片数成倍数关系。 |
| 关键词: 导叶片数；受力分析；双向竖井贯流泵装置；数值模拟；模型试验 |
| DOI：10.13522/j.cnki.ggps.2021445 |
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| The Influence of Guide Vanes on Force Imposed to Bidirectional Shaft Tubular Pump |
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LIN Pengcheng, BAI Zhou, TANG Fangping, ZHANG Yedong, ZHENG Bin, WANG Yong
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1. School of Hydraulic Energy and Power Engineering, Yangzhou University, Yangzhou 225000, China; 2. Shuyang Water Conservancy Bureau of Jiangsu Province, Suqian 223600, China; 3. Qiantang Basin Center of Zhejiang Province, Hangzhou 310020, China;
4. Zhejiang Water Conservancy and Hydropower Construction Holding Development Company, Hangzhou 310020, China
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| Abstract: |
| 【Objective】Bidirectional shaft tubular pump is a device commonly used in hydraulic projects. The aim of this paper is to study the impact of guide vane numbers on the force imposed to the pump when it is under different working conditions.【Method】The investigation was based on computational fluid dynamics (CFD) and experiments conducted in a real engineering project. Water flow in the pump was turbulent and described by the RNG k-ε turbulence model. The experimental data was used to calibrate the model, and the validated model was then used to analyze the impact of guide vane numbers on the pump under different working conditions.【Result】Under back and forth operation condition, the average axial force imposed to the pump by different guide vane numbers was comparable. Making the ratio of guide vane numbers to blade numbers an integer increased the peak axial force pulsation significantly, risking pump operation. The radial force imposed to the impeller was minimal and can be neglected in design. It was also found that setting the number of guide vanes even can reduce the radial force imposed to the pump by the guide vane.【Conclusion】The number of guide vanes and the number of blades combined to affect the force imposed to the pump. Our results indicated that design should avoid the ratio of the guide vane numbers to the blade numbers being an integer. |
| Key words: guide vane number; force analysis; Two-way shaft tubular pump device; numerical simulation; model test |
