天然气管道阴极保护防腐技术失效成因与整改措施研究

Research on the Causes of Failure and Rectification Measures for Cathodic Protection Anti-corrosion Technology in Natural Gas Pipelines

摘要

天然气管道作为天然气输送载体，多采用埋地敷设，外部服役环境复杂，易发生腐蚀，影响管道安全稳定运行与天然气连续输送。阴极保护是预防埋地天然气管道腐蚀、延长管道使用寿命的关键技术手段。本文结合现场勘查与检测分析，梳理天然气管道阴极保护系统运行现状，排查运行故障与缺陷，剖析故障技术成因，明确不同因素引发的隐性故障特征，评估故障影响程度，提出针对性整改对策与运行管控方法，为天然气管道阴极保护系统故障检测与修复提供技术参考，提升管道防腐技术应用水平，保障长输天然气管道安全平稳运行。

Abstract

As the medium for natural gas transportation, pipelines are mostly laid underground, exposed to complex external service environments, making them prone to corrosion, which affects the safe and stable operation of pipelines and the continuous delivery of natural gas. Cathodic protection is a key technical measure to prevent corrosion in buried natural gas pipelines and extend their service life. This paper combines field surveys and inspection analyses to review the operational status of cathodic protection systems in natural gas pipelines, identify operational faults and defects, analyze the technical causes of failures, clarify the hidden fault characteristics triggered by different factors, assess the impact of faults, and propose targeted rectification measures and operational control methods. It provides technical references for the detection and repair of cathodic protection system failures in natural gas pipelines, enhances the application level of pipeline corrosion prevention technology, and ensures the safe and stable operation of long-distance natural gas pipelines.

关键词

天然气管道 / 阴极保护 / 防腐失效 / 整改措施

Key words

natural gas pipeline / cathodic protection / corrosion prevention failure / rectification measures

参考文献

[1] 刘贝贝. 长输天然气管道防腐层及阴极保护技术研究[J]. 化工管理, 2026,(01):121-124.

[2] 王翔. 基于阴极保护技术的天然气长输管道防腐方法研究[J]. 中国石油和化工标准与质量, 2025, 45(21):33-35.

[3] 丁融. 长输天然气管道阴极保护常见缺陷与解决措施研究[J]. 现代工程科技, 2025, 4(01):113-116.

[4] 朱云伟. 参比管试片法在天然气长输管道阴极保护中的应用[J]. 山西化工, 2024, 44(04):182-183.

[5] 胡志强, 王兴见, 李平. 某天然气管道杂散电流干扰对阴极保护效果的影响研究[J]. 石油管材与仪器, 2023, 9(01):71-75.