天然气管线泄露与安全预防

Natural-Gas Pipeline Leakage and Safety Prevention

摘要: 天然气长输管道施工和长期的运行过程中，由于管线中硫化氢和水汽的腐蚀，土壤中的酸碱介质对管线的腐蚀，连接管道的法兰损坏，阀门损坏，螺纹损坏，由于地面施工，地下孔洞古墓等造成的沉降，掺氢等因素造成管道漏气，引起火灾或者安全隐患，本文分析了管道运行可能出现的故障以及解决问题的方法，并介绍了目前管道泄露的检测方法，对管道安全运行有重要的指导意义。

Abstract: Long-distance natural gas transmission pipelines are prone to gas leakage during construction and long-term operation. Leakage causes including internal corrosion induced by hydrogen sulfide and water vapor, corrosion from acid and alkaline soil media, damage to flanges, valves and threaded connections, ground construction, ground settlement arising from underground cavities and ancient tombs, and hydrogen blending. Such leaks may trigger fires and major safety hazards. This paper analyzes typical operational faults of pipelines and corresponding disposal measures, summarizes mainstream pipeline leakage detection technologies, and provides important theoretical guidance for the safe operation of natural gas pipelines.