油气管道地铁杂散电流直接排流技术应用

Application of Metro Stray Current Direct Discharge Technology in Oil and Gas Pipelines

简述地铁杂散电流对油气管道引起的腐蚀情况,分析地铁杂散电流防护方式,通过工程实例验证了直接排流技术应用的可行性及有效性。结果表明:直接排流技术是减轻地铁杂散电流干扰的有效防护措施,具有排流效果好、经济和简单等优点。建议地铁周围有油气管道时,应预留油气管道排流电缆接口。

Corrosion of metro stray current to oil and gas pipelines was briefly introduced, and protection of metro stray current was analyzed. Feasibility and effectiveness of direct discharge technology were verified by case study. The results showed that direct discharge technology was an effective protective measure to reduce interference of metro stray current, and had the advantages of economy, simplicity and good drainage effects. It is recommended that discharge cable interface should be reserved for oil and gas pipelines at construction when there are oil and gas pipelines around the metro.