直流杂散电流对埋地管道腐蚀规律及干扰影响的研究进展

王军, 吴昀, 张响, 杜艳霞, 朱敏, 李自力

doi:10.16577/j.issn.1001-1560.2023.0098

材料保护 >

2023 , Vol. 56 >Issue 4: 169 - 177

DOI: https://doi.org/10.16577/j.issn.1001-1560.2023.0098

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直流杂散电流对埋地管道腐蚀规律及干扰影响的研究进展

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¹浙江省白马湖实验室有限公司； ²浙江能源天然气集团有限公司； ³中国石油大学(华东)储运与建筑工程学院

李自力(1963-)，博士，教授，主要从事油气储运系统安全工程的研究，电话:15053293355，E-mail:zilimenhuzu＠163.com

收稿日期: 2022-10-18

修回日期: 2022-11-22

录用日期: 2022-12-15

网络出版日期: 2023-08-04

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Research Progresses on the Corrosion Law and Interference Effect of DC Stray Current on Buried Pipelines

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(1.Zhejiang Baima Lake Laboratory Co.，Ltd.，Hangzhou 310000，China；2.Zhejiang Energy Natural Gas Group Co.，Ltd.，Hangzhou 310000，China；3.College of Pipeline and Civil Engineering，China University of Petroleum (East China)，Qingdao 266580，China)

Received date: 2022-10-18

Revised date: 2022-11-22

Accepted date: 2022-12-15

Online published: 2023-08-04

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摘要

直流杂散电流对埋地金属管道产生很大干扰。从直流杂散电流类型(稳态直流和动态直流)以及干扰电流大小的角度分析了直流杂散电流对金属材料的腐蚀规律,包括电化学行为和腐蚀影响。从金属腐蚀和阴极保护干扰2个方面调研了直流杂散电流对埋地管道的干扰影响,并按照干扰源的类型(高压直流接地极、阴极保护阳极地床和地铁)进行了归纳。最后,对直流干扰下埋地管道腐蚀规律研究存在的不足进行了探讨,对未来的研究方向进行了展望。

关键词： 直流杂散电流; 埋地管道; 腐蚀规律; 电化学行为; 干扰

本文引用格式

王军, 吴昀, 张响, 杜艳霞, 朱敏, 李自力 . 直流杂散电流对埋地管道腐蚀规律及干扰影响的研究进展[J]. 材料保护, 2023 , 56(4) : 169 -177 . DOI: 10.16577/j.issn.1001-1560.2023.0098

Abstract

DC stray currents cause great interference to buried metal pipelines.This paper analyzed the corrosion laws of DC stray current on metal materials from the perspectives of the type of DC stray current and the magnitude of the interference current，including the electrochemical behavior and corrosion effects.Additionally，the interference effects of DC stray currents on buried pipelines were investigated from the aspects of metal corrosion and cathodic interference，which were further summarized according to the types of interference sources (HVDC grounding electrode，cathodic protection anode bed and subway).Finally，the deficiencies in the research of the corrosion law of buried pipelines under direct current interference were discussed，and the future research direction was prospected.

Key words： DC stray current; buried pipeline; corrosion law; electrochemical behavior; interference

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