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Numerical Analysis on the Hydraulic Thrust and Dynamic Response Characteristics of a Turbine Pump

Author

Listed:
  • Linghua Kong

    (Fujian Xianyou Pumped Storage Co., Ltd., Xianyou 351200, China)

  • Jingwei Cao

    (Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Xiangyang Li

    (Fujian Xianyou Pumped Storage Co., Ltd., Xianyou 351200, China)

  • Xulei Zhou

    (Fujian Xianyou Pumped Storage Co., Ltd., Xianyou 351200, China)

  • Haihong Hu

    (Fujian Xianyou Pumped Storage Co., Ltd., Xianyou 351200, China)

  • Tao Wang

    (Fujian Xianyou Pumped Storage Co., Ltd., Xianyou 351200, China)

  • Shuxin Gui

    (Fujian Xianyou Pumped Storage Co., Ltd., Xianyou 351200, China)

  • Wenfa Lai

    (Fujian Xianyou Pumped Storage Co., Ltd., Xianyou 351200, China)

  • Zhongfeng Zhu

    (Fujian Xianyou Pumped Storage Co., Ltd., Xianyou 351200, China)

  • Zhengwei Wang

    (Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Yan Liu

    (Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

Abstract

Pumps as turbines are widely used in the world, wherein the hydraulic thrust of a turbine pump is one of the key factors affecting the safe and stable operation of a unit. There are a lot of difficulties to evaluate the hydraulic thrust by site observation and experiment. These difficulties can be resolved if a numerical simulation is applied. The present work aims to analyze the axial and radial hydraulic thrust of a prototype turbine pump in turbine mode, and then to determine the dynamic response characteristics of the turbine pump shafting. The axial hydraulic thrust in the turbine mode is upward, with a fluctuation range of 155 t to 175 t. The pressure fluctuation in the runner can be 16% of the unit head. The simulation results provide a good reference for understanding the hydraulic performance of the turbine pump and useful guidance for the operation of the unit. The structure analysis shows that the runner has asymmetrical deformation in the axial and radial directions. The amplitude of the dynamic stress on the shafting is about 10 MPa, and the dominant frequency of the dynamic stress on the runner is 20 f n . The results could provide guidance for the operating and optimization of the unit, which helps the safe and stable operation of the station.

Suggested Citation

  • Linghua Kong & Jingwei Cao & Xiangyang Li & Xulei Zhou & Haihong Hu & Tao Wang & Shuxin Gui & Wenfa Lai & Zhongfeng Zhu & Zhengwei Wang & Yan Liu, 2022. "Numerical Analysis on the Hydraulic Thrust and Dynamic Response Characteristics of a Turbine Pump," Energies, MDPI, vol. 15(4), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:4:p:1580-:d:754702
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    References listed on IDEAS

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    Cited by:

    1. Andrey Achitaev & Pavel Ilyushin & Konstantin Suslov & Sergey Kobyletski, 2022. "Dynamic Simulation of Starting and Emergency Conditions of a Hydraulic Unit Based on a Francis Turbine," Energies, MDPI, vol. 15(21), pages 1-18, October.
    2. Buchao Xu & Weiqiang Zhao & Wenhua Lin & Zhongyu Mao & Ran Tao & Zhengwei Wang, 2022. "The Influence of Different Operating Conditions on the Support Bracket Stress in Pumped Storage Units," Energies, MDPI, vol. 15(6), pages 1-15, March.
    3. Xiangyang Li & Jingwei Cao & Jianling Zhuang & Tongmao Wu & Hongyong Zheng & Yunfeng Wang & Wenqiang Zheng & Guoqing Lin & Zhengwei Wang, 2022. "Effect of Operating Head on Dynamic Behavior of a Pump–Turbine Runner in Turbine Mode," Energies, MDPI, vol. 15(11), pages 1-15, May.

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