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环向裂缝缺陷管道带压密封的安全注剂压力影响因素分析
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Study on the Influence of Safety Injection Pressure of Online Sealing for Pipeline with Circumferential Crack Fault
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    摘要:

    为了提高注剂式带压密封技术在管道维抢修作业过程中的安全性和成功率,采用实验和ANSYS仿真模拟相结合的方法对含环向裂缝缺陷管道的安全注剂压力进行分析。通过分析和计算,研究环向裂缝长度、管径和运行压力对注剂密封过程中缺陷管道所受到的最大等效应力的影响。结果表明:随着环向裂缝长度的增加,缺陷管道的最大等效应力减小,安全注剂压力减小;随着管径的增大,注剂压力呈现先减小后增加的趋势;管道运行压力越大,其泄漏量就越大,所需要的注剂压力也越高。所建立的有限元分析模型的分析结果与实验结果吻合较好,模型具有较高的准确性和可靠性。

    Abstract:

    In order to improve the technical safety and success rate of online sealing for injecting sealant in pipeline maintenance and repair,the safety injecting pressure of the pipeline with circumferential crack fault was analyzed by using the experimental method and ANSYS simulation method.Through the analysis and calculation,the influences of circumferential crack length,diameter and operation pressure on the maximum equivalent stress of faulty pipeline in the process of online sealing were researched.The results show that the maximum equivalent stress and safety injecting pressure of faulty pipeline are decreased with the increasing of the circumferential crack length.As the diameter increases,the injecting pressure is decreased firstly and then increased.The greater the pipeline operation pressure,the larger the leakage volume,and the higher the required injecting pressure.The analysis results of the established finite element analysis model are in good agreement with the experimental results and the model has high accuracy and reliability.

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王玉龙,蒋华义,费新玲,孙娜娜,齐傲江.环向裂缝缺陷管道带压密封的安全注剂压力影响因素分析[J].润滑与密封,2019,44(4):114-119.
. Study on the Influence of Safety Injection Pressure of Online Sealing for Pipeline with Circumferential Crack Fault[J]. Lubrication Engineering,2019,44(4):114-119.

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  • 在线发布日期: 2019-07-04
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