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Analysis of the cracking of FRP supports in Converter Valves
编号：448 访问权限：仅限参会人 更新：2022-08-29 16:07:58 浏览：63次 张贴报告

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摘要
The FRP support is an important component of the converter valve, due to the gravitational effect of the reactor and the role of violent vibration, the mechanical properties of the support is essential to ensure the stable operation of the converter valve. In February 2022, during an inspection in the converter valve, the FRP support was found to be cracked, which showed that the mechanical properties of the support were problematic and posed a serious threat to the normal operation of the converter valve, therefore research and analysis has been carried out to the cracking of the supports. Firstly, FTIR, TGA, DSC, bending strength, tensile strength, elongation at break and other physical and chemical properties tests were carried out on the cracked support and the spare support, according to the analysis of the test results, it was found that the main chemical composition and thermal properties of the cracked support did not change significantly compared to the spare support, but the mechanical properties of the cracked support showed an overall decrease compared to the spare support. Subsequently, a structural mechanics simulation of the FRP support was established based on COMSOL Multiphysics and the maximum stress of the FRP support was calculated to be 2.33*107 N/m2 by simulation. Combined with the results of the mechanical properties test to obtain the cracked support to bear the maximum stress as a percentage of the damage load (5.46*107 N/m2) is 42.67 %, the spare support member to bear the maximum stress as a percentage of the damage load (7.85*107 N/m2) is 29.68 %, in general when the external load as a percentage of the damage load is greater than 40 % need to consider the creep movement of FRP, support The creep of the connection will form a local glass fiber fracture zone, the local glass fiber fracture zone will gradually develop into a local crack, eventually causing the support connection to fracture as a whole.
关键词
Converter valves, FRP supports, Cracks, Mechanical behavior, Creep
报告人
Xinlong Zhang
School of Electrical Engineering ，Chongqing University

稿件作者
Yansheng Zou Maintenance Test Center of Company of CSG
Zhen Wang Maintenance Test Center of Company of CSG
Kai Xiao Maintenance Test Center of Company of CSG
Ning Liang Maintenance Test Center of Company of CSG
Xilin Yan Maintenance Test Center of Company of CSG
Xinlong Zhang School of Electrical Engineering ，Chongqing University
Li Cheng Chongqing University
学童 赵 State Key Laboratory of Power Transmission Equipment & System Security and New Technology； Chongqing University
Liao Ruijin State Key Laboratory of Power Transmission Equipment & System Security and New Technology； China； Chongqing； 400044； Chongqing University
Yilong Huang Maintenance Test Center of Company of CSG
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重要日期

  • 会议日期

    09月25日

    2022

    至

    09月29日

    2022

  • 08月15日 2022

    提前注册日期

  • 09月10日 2022

    报告提交截止日期

  • 11月10日 2022

    注册截止日期

  • 11月30日 2022

    初稿截稿日期

  • 11月30日 2022

    终稿截稿日期

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Chongqing University
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