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Analysis of Double Seat Seal of Ultra High Pressure Flat Gate Valve

Received: 12 February 2021     Accepted: 23 February 2021     Published: 11 November 2021
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Abstract

As an important part of the Christmas tree, the sealing performance of the flat gate valve is very important, and the O-ring seal is the most commonly used seal in the flat gate valve. Therefore, the research on O-rings is particularly important. For the flat gate valve with a single gate, its structure has gradually developed from a single seat seal to a double seat seal. This article mainly analyzes the sealing principle of the double seat in the ultra-high pressure flat gate valve and the influence of the pre-tightening force of the sealing ring on the sealing effect. Using finite element analysis software, a two-dimensional axisymmetric model of the double valve seat sealing structure was established to study the non-metallic sealing performance of the valve seat. The Mises stress, the maximum contact stress of the sealing surface, and the contact area of the sealing surface of the O-ring seal under different compression ratios are analyzed. The results show that when only the sealing performance and pre-tightening force requirements are considered, an O-ring with a larger wire diameter should be selected as much as possible. When considering the service life of the O-ring seal, the compression rate of the seal ring should not exceed 20%. Therefore, the selected seal ring wire diameter is 3.75mm within the recommended seal ring compression rate range.

Published in Advances in Applied Sciences (Volume 6, Issue 4)
DOI 10.11648/j.aas.20210604.16
Page(s) 110-115
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), 2021. Published by Science Publishing Group

Keywords

Flat Gate Valve, Double Seat, O-ring, Sealing Performance

References
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Cite This Article
  • APA Style

    Wei Junhui, Zhang Chuan, Jing Hongtao, Wang Wei, Tu Zhixiong, et al. (2021). Analysis of Double Seat Seal of Ultra High Pressure Flat Gate Valve. Advances in Applied Sciences, 6(4), 110-115. https://doi.org/10.11648/j.aas.20210604.16

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    ACS Style

    Wei Junhui; Zhang Chuan; Jing Hongtao; Wang Wei; Tu Zhixiong, et al. Analysis of Double Seat Seal of Ultra High Pressure Flat Gate Valve. Adv. Appl. Sci. 2021, 6(4), 110-115. doi: 10.11648/j.aas.20210604.16

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    AMA Style

    Wei Junhui, Zhang Chuan, Jing Hongtao, Wang Wei, Tu Zhixiong, et al. Analysis of Double Seat Seal of Ultra High Pressure Flat Gate Valve. Adv Appl Sci. 2021;6(4):110-115. doi: 10.11648/j.aas.20210604.16

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  • @article{10.11648/j.aas.20210604.16,
      author = {Wei Junhui and Zhang Chuan and Jing Hongtao and Wang Wei and Tu Zhixiong and She Xiaomei and Zou Yan},
      title = {Analysis of Double Seat Seal of Ultra High Pressure Flat Gate Valve},
      journal = {Advances in Applied Sciences},
      volume = {6},
      number = {4},
      pages = {110-115},
      doi = {10.11648/j.aas.20210604.16},
      url = {https://doi.org/10.11648/j.aas.20210604.16},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aas.20210604.16},
      abstract = {As an important part of the Christmas tree, the sealing performance of the flat gate valve is very important, and the O-ring seal is the most commonly used seal in the flat gate valve. Therefore, the research on O-rings is particularly important. For the flat gate valve with a single gate, its structure has gradually developed from a single seat seal to a double seat seal. This article mainly analyzes the sealing principle of the double seat in the ultra-high pressure flat gate valve and the influence of the pre-tightening force of the sealing ring on the sealing effect. Using finite element analysis software, a two-dimensional axisymmetric model of the double valve seat sealing structure was established to study the non-metallic sealing performance of the valve seat. The Mises stress, the maximum contact stress of the sealing surface, and the contact area of the sealing surface of the O-ring seal under different compression ratios are analyzed. The results show that when only the sealing performance and pre-tightening force requirements are considered, an O-ring with a larger wire diameter should be selected as much as possible. When considering the service life of the O-ring seal, the compression rate of the seal ring should not exceed 20%. Therefore, the selected seal ring wire diameter is 3.75mm within the recommended seal ring compression rate range.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Analysis of Double Seat Seal of Ultra High Pressure Flat Gate Valve
    AU  - Wei Junhui
    AU  - Zhang Chuan
    AU  - Jing Hongtao
    AU  - Wang Wei
    AU  - Tu Zhixiong
    AU  - She Xiaomei
    AU  - Zou Yan
    Y1  - 2021/11/11
    PY  - 2021
    N1  - https://doi.org/10.11648/j.aas.20210604.16
    DO  - 10.11648/j.aas.20210604.16
    T2  - Advances in Applied Sciences
    JF  - Advances in Applied Sciences
    JO  - Advances in Applied Sciences
    SP  - 110
    EP  - 115
    PB  - Science Publishing Group
    SN  - 2575-1514
    UR  - https://doi.org/10.11648/j.aas.20210604.16
    AB  - As an important part of the Christmas tree, the sealing performance of the flat gate valve is very important, and the O-ring seal is the most commonly used seal in the flat gate valve. Therefore, the research on O-rings is particularly important. For the flat gate valve with a single gate, its structure has gradually developed from a single seat seal to a double seat seal. This article mainly analyzes the sealing principle of the double seat in the ultra-high pressure flat gate valve and the influence of the pre-tightening force of the sealing ring on the sealing effect. Using finite element analysis software, a two-dimensional axisymmetric model of the double valve seat sealing structure was established to study the non-metallic sealing performance of the valve seat. The Mises stress, the maximum contact stress of the sealing surface, and the contact area of the sealing surface of the O-ring seal under different compression ratios are analyzed. The results show that when only the sealing performance and pre-tightening force requirements are considered, an O-ring with a larger wire diameter should be selected as much as possible. When considering the service life of the O-ring seal, the compression rate of the seal ring should not exceed 20%. Therefore, the selected seal ring wire diameter is 3.75mm within the recommended seal ring compression rate range.
    VL  - 6
    IS  - 4
    ER  - 

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Author Information
  • Oil and Gas Engineering Research Institute of China Petroleum Tarim Oilfield Company, Korla, China

  • CNPC BOMCO Drilling & Production Equipment Co., Ltd. Deyang, China

  • Oil and Gas Engineering Research Institute of China Petroleum Tarim Oilfield Company, Korla, China

  • CNPC BOMCO Drilling & Production Equipment Co., Ltd. Deyang, China

  • Oil and Gas Engineering Research Institute of China Petroleum Tarim Oilfield Company, Korla, China

  • CNPC BOMCO Drilling & Production Equipment Co., Ltd. Deyang, China

  • CNPC BOMCO Drilling & Production Equipment Co., Ltd. Deyang, China

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