交流杂散电流与应力耦合下对涂层破损管道腐蚀行为影响
DOI:
作者:
作者单位:

辽宁石油化工大学石油与天然气工程学院

作者简介:

通讯作者:

中图分类号:

TE88

基金项目:

国家自然科学基金(52274062);辽宁省博士科研启动基金(2023-BS-198);辽宁省教育厅基本科研项目(LJKMZ20220734)


Effect of AC stray current and stress coupling on corrosion behavior of coated damaged pipelines
Author:
Affiliation:

School of Petroleum and Natural Gas Engineering, Liaoning Petrochemical University

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    通过模拟分析交流杂散电流对管道涂层破损处腐蚀量的影响,研究了交流电流大小、土壤电导率、管道内压、应力、接地极距离和管道半径等参数对腐蚀的影响。结果显示,当管道应力小于屈服强度时,应力对交流杂散电流的腐蚀影响较小,但管道形变增加后,应力将引起严重腐蚀。交流电流越大,管道涂层缺陷处腐蚀量越大。交流电频率越小,管道涂层缺陷处腐蚀量越大。接地极距离管道越近,管道涂层缺陷处腐蚀量越大。土壤的电导率越大,管道涂层缺陷处腐蚀量越大。管道半径越小,管道涂层缺陷处腐蚀量越大。研究成果对确保交流杂散电流影响下油气输送管道的安全运行具有重要意义。

    Abstract:

    : By simulating the effects of stray alternating currents on the corrosion at damaged areas of pipeline coatings, the study investigated the influence of parameters such as AC current, soil conductivity, pipeline internal pressure, stress and distance to the grounding electrode, and pipeline radius on corrosion. The results indicate that when the stress on the pipeline is below the yield strength, the impact of stress on the corrosion from stray AC currents is minimal; however, increased deformation of the pipeline can lead to severe corrosion under stress. Greater AC currents result in higher corrosion levels at areas with pipeline coating defects. Lower AC frequencies are associated with increased corrosion at these defect locations. Closer proximity of the grounding electrode to the pipeline leads to higher corrosion levels at coating defects. Lower soil conductivity is correlated with increased corrosion at coating defects. Smaller pipeline radii are associated with higher corrosion levels at coating defects. These research findings provide essential scientific insights for ensuring the safe operation of petroleum and natural gas transportation systems.

    参考文献
    相似文献
    引证文献
引用本文

董欢,马贵阳,孙东旭. 交流杂散电流与应力耦合下对涂层破损管道腐蚀行为影响[J]. 科学技术与工程, , ():

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2024-03-30
  • 最后修改日期:2024-05-20
  • 录用日期:2024-05-22
  • 在线发布日期:
  • 出版日期:
×
亟待确认版面费归属稿件,敬请作者关注