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Research on Optimization of the Bulb Form of the Bulb Tubular Pump Device for a Low-Head Agricultural Irrigation Pumping Station

Author

Listed:
  • Hongyin Zhang

    (College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225100, China)

  • Jianlong Liu

    (Management Division of Qinhuai River Hydraulic Engineering of Jiangsu Province, Nanjing 210022, China)

  • Jinxin Wu

    (College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225100, China)

  • Weixuan Jiao

    (College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225100, China)

  • Li Cheng

    (College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225100, China)

  • Mingbin Yuan

    (College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225100, China)

Abstract

A bulb tubular pump unit is a horizontal tubular pump unit composed of a water pump and bulb with an electric motor installed. Electric motors, transmission equipment, and bearings are usually placed in the bulb. The bulb is located in the flow channel and has a relatively narrow space. Therefore, the shape of the bulb has a significant influence on the flow pattern and pump efficiency in the flow channel. In this study, the CFX 19.2 software was employed to optimize the bulb hydraulically according to its geometry and parameters. The research results indicate that the flow pattern at the tail of the elliptical bulb was better, the hydraulic loss at the bulb section was small, and the device efficiency was higher than that at the tail, which was round. The streamlined support had small flow resistance, minimal hydraulic loss, and a high pump unit head and efficiency. Nine schemes were selected, and the geometrical characteristics and parameters of the bulb were determined as follows: the shape of the tail of the bulb was oval, the bulb ratio was 0.96, and the shape of the support parts was streamlined. The results hold important reference significance to improve efficiency and broaden the operating conditions of bulb tubular pump devices.

Suggested Citation

  • Hongyin Zhang & Jianlong Liu & Jinxin Wu & Weixuan Jiao & Li Cheng & Mingbin Yuan, 2023. "Research on Optimization of the Bulb Form of the Bulb Tubular Pump Device for a Low-Head Agricultural Irrigation Pumping Station," Agriculture, MDPI, vol. 13(9), pages 1-18, August.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:9:p:1698-:d:1227165
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    References listed on IDEAS

    as
    1. Weixuan Jiao & Zhishuang Li & Li Cheng & Yuqi Wang & Bowen Zhang, 2022. "Study on the Hydraulic and Energy Loss Characteristics of the Agricultural Pumping Station Caused by Hydraulic Structures," Agriculture, MDPI, vol. 12(11), pages 1-16, October.
    2. Sun, Longyue & Pan, Qiang & Zhang, Desheng & Zhao, Ruijie & Esch, B.P.M.(Bart) van, 2022. "Numerical study of the energy loss in the bulb tubular pump system focusing on the off-design conditions based on combined energy analysis methods," Energy, Elsevier, vol. 258(C).
    3. Zhang, Bowen & Cheng, Li & Jiao, Weixuan & Zhang, Di, 2023. "Experimental and statistical analysis of the flap gate energy loss and pressure fluctuation spatiotemporal characteristics of a mixed-flow pump device," Energy, Elsevier, vol. 272(C).
    4. Ji, Leilei & Li, Wei & Shi, Weidong & Tian, Fei & Agarwal, Ramesh, 2021. "Effect of blade thickness on rotating stall of mixed-flow pump using entropy generation analysis," Energy, Elsevier, vol. 236(C).
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