CAJ | 학술논문

要:本文通过对新疆油田埋地管线受电气化铁路杂散电流影响进行了调查研究,发现电气化铁路产生的杂散电流对埋地管线影响严重,其中最大的正向偏移值达到了近7V,这将导致埋地管线阳极溶解反应加剧,进而导致管线腐蚀穿孔和油气泄露.当电气化铁路通过时,临近的埋地管线中杂散电流明显增大,而且影响时间最长高达近30分钟.电气化铁路与管线平行时对埋地管线影响要大于交叉情况.通过对杂散电流影响严重的测试点进行排流保护,可以最大限度地减轻杂散电流对埋地管线的影响.
요:본문통과대신강유전매지관선수전기화철로잡산전류영향진행료조사연구,발현전기화철로산생적잡산전류대매지관선영향엄중,기중최대적정향편이치체도료근7V,저장도치매지관선양겁용해반응가극,진이도치관선부식천공화유기설로.당전기화철로통과시,림근적매지관선중잡산전류명현증대,이차영향시간최장고체근30분종.전기화철로여관선평행시대매지관선영향요대우교차정황.통과대잡산전류영향엄중적측시점진행배류보호,가이최대한도지감경잡산전류대매지관선적영향.
Effects of stray current induced by electric railway on buried pipeline in xinjiang oilfield were investigated. The results showed that there were serious effects of stray currents on the buried pipeline. The most positive shift from the potential of pipe to ground arrived at about 7 V, which increased the corrosion rate of the pipeline. It led to the perforation of the pipelines and leakage of oils. The stray currents in the buried pipelines obviously increased and the influencing time was near 30 minutes when the electric railway arrived. The effects of the stray currents on the pipelines were more serious for railway paralleling with the pipelines than was the case of crossing. After measurement, discharge protection was done. The results showed that the discharge protection could effectively decrease the effect of stray current on buried pipeline.