American Journal of Mechanical and Industrial Engineering

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The Flow Field Analysis and Structure Optimization of Large Diameter Butterfly Valve

Received: 24 August 2020    Accepted: 11 September 2020    Published: 21 September 2020
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Abstract

The large diameter butterfly valve used in Qinghai Naqu hydropower station was subjected to strong vibration when the opening was small. In view of the phenomenon of strong vibration and damage of the valve, the fluid theory analysis is carried out and the appropriate mathematical model of fluid analysis is selected. This paper established the flow model of butterfly valve for different opening degrees with the 2D drawings and simulated the flow field by using CFX software. Through numerical simulation, the flow field characteristics of the valve under different opening degrees are obtained, and it is found that the valve failure is caused by vortex street effect. The results of numerical analysis show that the vortex are the most strong in the range of 5% to 30% and The vortex street phenomenon is the strongest at 5% opening. When the opening is greater than 30%, the vortex street effect decreases gradually. Meanwhile, the reason of vortex street effect is that the structure of butterfly plate is complex, and an improved structure was given and the results of numerical analysis show that the vortex effect decreased significantly for the new one. This new structure can effectively prevent the vortex resonance and give an example for the new design of a large butterfly valve.

DOI 10.11648/j.ajmie.20200504.12
Published in American Journal of Mechanical and Industrial Engineering (Volume 5, Issue 4, July 2020)
Page(s) 59-63
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Butterfly Valve, CFX Software, Vortex Resonance, Structure Optimization

References
[1] TONG Chengbiao. Optimization design and flow field research of butterfly valve. Changsha, School of mechanical and transport engineering, Hunan University, 2010.
[2] LIli, SHI Zhihui, ZAHO Jinglong. Numerical simulation of flow field around vortex street and vortex flowmeter. Journal of Dalian Jiaotong University, 2014, 35 (6): 32-35.
[3] DENG Jian, LI Jinghu, ZHU Ayuan. Research on Karman vortex street effect of UAV with skid. Aircraft design, 2014, 34 (3): 1-3.
[4] Min Qiangli. Numerical simulation of Karman vortex street with low Reynolds number. Journal of Sichuan military engineering, 2009, 30 (11): 81-83.
[5] Pang Lijun, LV Guiping, Zhong Su. Vortex street simulation and vibration analysis of turbine fixed guide vane. Journal of mechanical engineering, 2011, 47 (22): 159-166.
[6] Shi Yiping, Zhou Yurong. ABAQUS finite element analysis example details. Beijing: China Machine Press, 2006: 126.
[7] Zhang Qinzhao, Liu Fusheng, Wang Hong. Study on flow field and resistance characteristics of triple eccentric butterfly valve. Fluid machinery, 2013, 41 (11): 1-5.
[8] Ding Yuan, Wu Jihua. ANSYS CFX 14.0 from introduction to mastery. Beijing: Tsinghua University Press, 2013.
[9] Jia Rumin, Zhang Weizheng. CFD numerical simulation and flow path optimization of control valve. Chemical machinery, 2009, 36 (2): 131-134.
[10] Li Jianwei, Xiao Liangyu. Research on vibration characteristics of butterfly valve disc of Francis turbine. Valve, 2013, 6: 15-17.
[11] Wang Dong, Zhang Siqing and Zhang Yunlong. Dynamic analysis and dovetail modification of turbine fixed guide vane vortex street. China electric power, 2014, 0 (11): 5-9.
[12] Li Tong, Zhou Jianjia, Yuan Shouqi. Static analysis of spiral centrifugal pump impeller based on flow field calculation. Fluid machinery, 2013, 41 (12): 22-26.
Author Information
  • Aerospace Science and Technology Microsystem Technology Co., Ltd, Nanjing, China

  • College of Mechanical Engineering, Sichuan University of Science and Engineering, Zigong, China

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  • APA Style

    Wang Yuhao, He Qingzhong. (2020). The Flow Field Analysis and Structure Optimization of Large Diameter Butterfly Valve. American Journal of Mechanical and Industrial Engineering, 5(4), 59-63. https://doi.org/10.11648/j.ajmie.20200504.12

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    ACS Style

    Wang Yuhao; He Qingzhong. The Flow Field Analysis and Structure Optimization of Large Diameter Butterfly Valve. Am. J. Mech. Ind. Eng. 2020, 5(4), 59-63. doi: 10.11648/j.ajmie.20200504.12

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    AMA Style

    Wang Yuhao, He Qingzhong. The Flow Field Analysis and Structure Optimization of Large Diameter Butterfly Valve. Am J Mech Ind Eng. 2020;5(4):59-63. doi: 10.11648/j.ajmie.20200504.12

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  • @article{10.11648/j.ajmie.20200504.12,
      author = {Wang Yuhao and He Qingzhong},
      title = {The Flow Field Analysis and Structure Optimization of Large Diameter Butterfly Valve},
      journal = {American Journal of Mechanical and Industrial Engineering},
      volume = {5},
      number = {4},
      pages = {59-63},
      doi = {10.11648/j.ajmie.20200504.12},
      url = {https://doi.org/10.11648/j.ajmie.20200504.12},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.ajmie.20200504.12},
      abstract = {The large diameter butterfly valve used in Qinghai Naqu hydropower station was subjected to strong vibration when the opening was small. In view of the phenomenon of strong vibration and damage of the valve, the fluid theory analysis is carried out and the appropriate mathematical model of fluid analysis is selected. This paper established the flow model of butterfly valve for different opening degrees with the 2D drawings and simulated the flow field by using CFX software. Through numerical simulation, the flow field characteristics of the valve under different opening degrees are obtained, and it is found that the valve failure is caused by vortex street effect. The results of numerical analysis show that the vortex are the most strong in the range of 5% to 30% and The vortex street phenomenon is the strongest at 5% opening. When the opening is greater than 30%, the vortex street effect decreases gradually. Meanwhile, the reason of vortex street effect is that the structure of butterfly plate is complex, and an improved structure was given and the results of numerical analysis show that the vortex effect decreased significantly for the new one. This new structure can effectively prevent the vortex resonance and give an example for the new design of a large butterfly valve.},
     year = {2020}
    }
    

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  • TY  - JOUR
    T1  - The Flow Field Analysis and Structure Optimization of Large Diameter Butterfly Valve
    AU  - Wang Yuhao
    AU  - He Qingzhong
    Y1  - 2020/09/21
    PY  - 2020
    N1  - https://doi.org/10.11648/j.ajmie.20200504.12
    DO  - 10.11648/j.ajmie.20200504.12
    T2  - American Journal of Mechanical and Industrial Engineering
    JF  - American Journal of Mechanical and Industrial Engineering
    JO  - American Journal of Mechanical and Industrial Engineering
    SP  - 59
    EP  - 63
    PB  - Science Publishing Group
    SN  - 2575-6060
    UR  - https://doi.org/10.11648/j.ajmie.20200504.12
    AB  - The large diameter butterfly valve used in Qinghai Naqu hydropower station was subjected to strong vibration when the opening was small. In view of the phenomenon of strong vibration and damage of the valve, the fluid theory analysis is carried out and the appropriate mathematical model of fluid analysis is selected. This paper established the flow model of butterfly valve for different opening degrees with the 2D drawings and simulated the flow field by using CFX software. Through numerical simulation, the flow field characteristics of the valve under different opening degrees are obtained, and it is found that the valve failure is caused by vortex street effect. The results of numerical analysis show that the vortex are the most strong in the range of 5% to 30% and The vortex street phenomenon is the strongest at 5% opening. When the opening is greater than 30%, the vortex street effect decreases gradually. Meanwhile, the reason of vortex street effect is that the structure of butterfly plate is complex, and an improved structure was given and the results of numerical analysis show that the vortex effect decreased significantly for the new one. This new structure can effectively prevent the vortex resonance and give an example for the new design of a large butterfly valve.
    VL  - 5
    IS  - 4
    ER  - 

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