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排灌机械工程学报
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排灌机械工程学报  0, Vol. Issue (): 2-    DOI:
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中比转速离心泵多工况设计
袁寿其 胡博 陆伟刚 李彤 黄志攀
(江苏大学流体机械工程技术研究中心,江苏镇江 212013)
Multi-operating-condition impeller design of centrifugal pump with medium-high specific speed
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摘要 TS65-40-125型中比转速离心泵实际运行中工况点经常变动,根据工业系统要求,其水力性能需同时满足多个工况点的要求。为实现多工况设计,针对中比转速离心泵原型泵在性能方面的不足,利用商业软件CFX,借鉴在低比转速离心泵多工况设计中广泛应用的加大流量设计法与无过载设计法,对TS65-40-125型中比速离心泵叶轮进行3次改进。在对原模型进行结构网格划分后,通过数值模拟,分析了不同设计方案下叶轮内的压力、湍动能、速度分布,并预测了外特性,选取一个最优方案进行试验。试验结果表明:改型后,设计点水泵扬程比原型对应工况点提高了5 m,在5个工况点效率都满足国家标准要求。数值模拟预测与试验结果证明,结合加大流量设计法并恰当的选取叶轮几何参数,可以有效地增加中比转速离心泵的扬程、提高水泵效率,拓宽水泵高效区,可以为中比转速离心泵的多工况设计提供参考。
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袁寿其 胡博 陆伟刚 李彤 黄志攀
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Abstract: The operating conditions of TS65-40-125 type centrifugal pump with medium-high specific speed are changing frequently. The performances of pump, especially pressure head and efficiency, were designed to satisfy five operation conditions according to the industry demands. After analyzing the defects of prototype pump, three impellers were designed based on the enlarged flow design method. The distributions of pressure, turbulence kinetic energy, velocity in three impellers were predicted with the commercial CFX. One impeller was selected as optimal schemes and produced for experiments. The test results show that the pressure head of the new product is 5 m higher than prototype pump at the new design working condition. The efficiencies of five operating conditions are significantly improved, meeting the design requirement. Both simulating and test results show that enlarged flow design method is effective to improve the pressure head of centrifugal pump with medium-high specific speed and widen the pump high efficiency area. A reference is provided for optimal design of medium-high specific speed centrifugal pump.
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袁寿其 胡博 陆伟刚 李彤 黄志攀. 中比转速离心泵多工况设计[J]. 排灌机械工程学报, 0, (): 2-.
YUAN Shou-Qi- Hu-Bo- Lu-Wei-Gang- Li-Tong- Huang-Zhi-Pan. Multi-operating-condition impeller design of centrifugal pump with medium-high specific speed[J]. Journal of Drainage and Irrigation Machinery Engin, 0, (): 2-.
 
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