Sinopec has been granted an invention patent: “A monitoring device and testing method for transient interference corrosion caused by stray currents in buried pipelines””
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Sinopec has been granted an invention patent: “A device and testing method for monitoring corrosion caused by transient interference from stray currents in buried pipelines.” According to data from the Tianyancha app, Sinopec (600028) has obtained a new invention patent; the title of this patent is “A device and testing method for monitoring corrosion caused by transient interference from stray currents in buried pipelines.” The patent application number is CN202211199311.6, and it was granted on September 5, 2025. Patent Abstract: The present invention discloses a monitoring device and testing method for transient interference corrosion caused by stray current in buried pipelines, belonging to the field of monitoring technology for stray current-induced corrosion. It consists of an experimental chamber, an experimental medium, a transient interference system, and an interference testing system ； The transient interference system consists of a potentiostat, a switching controller, a metal electrode array, an auxiliary electrode set, and a reference electrode ； Cathodic protection and the intensity and frequency of interference from stray currents are simulated by adjusting the output value and output period of the potentiostat ； The transient interference corrosion monitoring device and testing method for buried pipeline stray current anodes according to the present invention utilize a metal electrode array to enable the monitoring and evaluation of the instantaneous corrosive effects caused by anode transient interference on the pipelines ； By programmatically controlling the scanning of the current distribution on the surface of each metal electrode, it is possible to characterize the characteristics of local corrosion in pipelines. This approach is more comprehensive and systematic than traditional testing methods, and the data obtained are of greater reference value.
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