Stray current corrosion preventing system for pipeline

The invention discloses a stray current corrosion preventing system for a pipeline. The stray current corrosion preventing system for the pipeline comprises the pipeline, an electrode, a corrosion preventing layer, an insulation layer, a constant potential rectifier, a potential measuring instrument, a controller and a control center. A concrete implementation method comprises the steps of pipeline treatment, electrode mounting, spraying of the corrosion preventing layer, arrangement of the insulation layer, equipment connection and system use. By measuring the potential difference of the pipeline, corrosion current is found in time, the output voltage of the pipeline is adjusted according to the potential difference so as to counteract the potential difference, pipeline corrosion is avoided, the pipeline can be monitored at the same time, and the stray current corrosion preventing system for the pipeline aims for the stray current, is good in electrochemical corrosion prevention performance, high in reliabil