| 海底管道维修管卡密封结构的性能分析及测试 |
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| 引用本文： | 赵张帆,石湘,化怡龙.海底管道维修管卡密封结构的性能分析及测试[J].海洋工程,2023,41(1):101-109. |
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| 作者姓名： | 赵张帆 石湘 化怡龙 |
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| 作者单位： | 中国海洋大学 工程学院，山东 青岛 266100 |
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| 基金项目： | 山东省重点研发计划资助项目（2019GHY112086）；山东省大学生创新计划资助项目 |
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| 摘 要： | 密封压力是带压堵漏维修管卡的关键性能。介绍了323.9 mm(API 12英寸)维修管卡样机的总体结构及密封原理，选用接触压力准则作为管卡的密封评价准则，利用ANSYS Workbench软件建立了管卡密封结构的二维轴对称有限元模型，分析了密封结构闭环中薄弱部分在不同密封圈压缩量下的接触压力，然后试验测试了管卡样机密封圈压缩量和密封压力，并与有限元计算接触压力进行了对比。分析结果表明管卡密封结构最薄弱部分的接触压力随着周向密封圈压缩量的增大而增大，且主要是中间接触部分起到密封作用。通过试验验证了理论分析的管卡密封结构最薄弱位置，并发现相同密封圈压缩量下试验测试的密封压力与计算的接触压力近似，两者的变化趋势基本一致。有关分析思路和试验方法可以为管卡密封结构的设计提供重要参考。
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| 关 键 词： | 海底管道 维修管卡 密封结构 性能测试 有限元分析 |
| 收稿时间： | 2022/2/4 0:00:00 |
Performance analysis and test on sealing structure of repair clamp for subsea pipeline |
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| ZHAO Zhangfan,SHI Xiang,HUA Yilong.Performance analysis and test on sealing structure of repair clamp for subsea pipeline[J].Ocean Engineering,2023,41(1):101-109. |
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| Authors: | ZHAO Zhangfan SHI Xiang HUA Yilong |
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| Abstract: | The sealing pressure is the key performance of hot tap repair clamp. The overall structure and sealing principle of a API 12-inch repair clamp prototype are introduced. In the study, the contact pressure criterion was selected as the sealing evaluation criterion for the clamp. The two-dimensional axisymmetric FE models of the clamp sealing structure were established by using ANSYS Workbench software. And the contact pressures of the weak part in the closed loop of sealing structure under different compression amounts of the sealing ring were analyzed. Then the compression amounts of the sealing ring and the sealing pressures of the clamp prototype were tested. And the sealing pressures were compared with the contact pressures calculated by the FE method. The analysis results show that the contact pressure of the weakest part of clamp sealing structure increases with the increase of the compression amount of the circumferential sealing ring, and the middle contact part mainly plays the role of sealing. The weakest position by the theoretical analysis of the clamp sealing structure was verified by the tests. And it was found that the sealing pressure of the test was similar to the calculated contact pressure under the same compression amount of the sealing ring, and the change trends of the two were basically the same. The analysis ideas and test methods introduced can provide an important reference for the design of clamp sealing structure. |
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| Keywords: | subsea pipeline repair clamp sealing structure performance testing FEM analysis |
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