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Detection of the Flow State for a Centrifugal Pump Based on Vibration

Author

Listed:
  • Jiaxing Lu

    (Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China
    Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Xiaobing Liu

    (Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China)

  • Yongzhong Zeng

    (Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China)

  • Baoshan Zhu

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

  • Bo Hu

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

  • Shouqi Yuan

    (National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China)

  • Hong Hua

    (Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, China)

Abstract

A combined numerical and experimental method study was performed to detect the inner flow state for a type of centrifugal pump. It was found that the inlet attack angles of blades in an impeller have a great influence on the flow instabilities in a centrifugal pump. The mechanism of the rotating stall in the impeller channel was explained. Meanwhile, flow state identification with vibration (FSIV) was proposed to detect the flow instabilities in a centrifugal pump. The relationship between the external vibration and the inner flow state has been established by FSIV. The characteristics and mechanism of the vibration produced by the flow instabilities in a centrifugal pump were investigated. It was found that the hump, the rotating stall, the backflow, the occurrence of unstable flow, and the cavitation in the centrifugal pump can be effectively detected by applying the vibration signals, which helps to obtain safe and steady operating conditions for the system.

Suggested Citation

  • Jiaxing Lu & Xiaobing Liu & Yongzhong Zeng & Baoshan Zhu & Bo Hu & Shouqi Yuan & Hong Hua, 2019. "Detection of the Flow State for a Centrifugal Pump Based on Vibration," Energies, MDPI, vol. 12(16), pages 1-18, August.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:16:p:3066-:d:256109
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    References listed on IDEAS

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    1. Ming Gao & Peixin Dong & Shenghui Lei & Ali Turan, 2017. "Computational Study of the Noise Radiation in a Centrifugal Pump When Flow Rate Changes," Energies, MDPI, vol. 10(2), pages 1-11, February.
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    Cited by:

    1. Jiaxing Lu & Xiaobing Liu & Yongzhong Zeng & Baoshan Zhu & Bo Hu & Hong Hua, 2020. "Investigation of the Noise Induced by Unstable Flow in a Centrifugal Pump," Energies, MDPI, vol. 13(3), pages 1-22, January.
    2. Jianping Yuan & Jiali Shi & Yanxia Fu & Huilong Chen & Rong Lu & Xueliang Hou, 2022. "Analysis of Fluid-Structure Coupling Dynamic Characteristics of Centrifugal Pump Rotor System," Energies, MDPI, vol. 15(6), pages 1-18, March.

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