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A Visualized Experimental Study on the Influence of Reflux Hole on the Double Blades Self-Priming Pump Performance

Author

Listed:
  • Heng Qian

    (Zhejiang Engineering Research Center for Advanced Hydraulic Equipment, School of Mechanical and Automotive Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China)

  • Denghao Wu

    (College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China)

  • Chun Xiang

    (Zhejiang Engineering Research Center for Advanced Hydraulic Equipment, School of Mechanical and Automotive Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China)

  • Junwei Jiang

    (Zhejiang Engineering Research Center for Advanced Hydraulic Equipment, School of Mechanical and Automotive Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China)

  • Zhibing Zhu

    (Shimge Pump Industry (Hangzhou) Co., Ltd., Hangzhou 310018, China)

  • Peijian Zhou

    (College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China)

  • Jiegang Mou

    (College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China)

Abstract

The self-priming pump is a kind of centrifugal pump product with self-priming function, and the structural parameters of its reflux hole determine the performance. In order to reveal the mechanism of the self-priming process, we summarized the influence of structure parameters of the reflux hole on the performance of the self-priming pump. In this study, the transparent experimental pump was designed and manufactured, and a visual test bench was built. The gas–liquid two-phase flow pattern during the self-priming process with different reflux hole structure parameters was captured by high-speed camera. Results showed that: (1) the reflux hole of the self-priming pump affected the self-priming performance of the pump by affecting the backflow rate of the gas and liquid phases during the self-priming process. (2) Due to the uneven distribution of liquid velocity in the pump, the position of reflux hole had an obvious impact on the duration of self-priming middle stage, and the shortest duration was 13 s when φ = +15° and the longest duration was 45 s when φ = −30°. (3) The diameter of reflux hole had a very significant impact on the duration of the self-priming middle stage, and the shortest duration was 17 s when d = 10 mm and the longest duration was 94 s when d = 0 mm.

Suggested Citation

  • Heng Qian & Denghao Wu & Chun Xiang & Junwei Jiang & Zhibing Zhu & Peijian Zhou & Jiegang Mou, 2022. "A Visualized Experimental Study on the Influence of Reflux Hole on the Double Blades Self-Priming Pump Performance," Energies, MDPI, vol. 15(13), pages 1-11, June.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:13:p:4617-:d:846529
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    References listed on IDEAS

    as
    1. Huican Luo & Peijian Zhou & Lingfeng Shu & Jiegang Mou & Haisheng Zheng & Chenglong Jiang & Yantian Wang, 2022. "Energy Performance Curves Prediction of Centrifugal Pumps Based on Constrained PSO-SVR Model," Energies, MDPI, vol. 15(9), pages 1-19, May.
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    Cited by:

    1. Dan Ni & Feifan Wang & Bo Gao & Yang Zhang & Shiyuan Huang, 2022. "Experimental Investigation on the Effect of the Staggered Impeller on the Unsteady Pressure Pulsations Characteristic in a Pump," Energies, MDPI, vol. 15(23), pages 1-15, November.

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