Pipeline cathodic protection output adjustment system and adjustment method

Abstract

The invention provides a pipeline cathodic protection output adjustment system and adjustment method, wherein the pipeline cathodic protection output adjustment system includes: a plurality of corrosion rate probes, a control terminal, an anode ground bed, a potentiostat and a plurality of intelligent potential acquisition devices; The plurality of corrosion rate probes and the plurality of intelligent potential acquisition devices are correspondingly adjacent and arranged in the soil on one side of the pipeline along the extension direction of the pipeline, and are all electrically connected to the control terminal. The intelligent potential acquisition device is also connected to the phase through wires. The anode bed is buried in the soil on one side of the pipeline and connected to the potentiostat through wires; the potentiostat is electrically connected to the control terminal and connected to the pipeline through wires; accordingly, the cathodic protection output of the pipeline The adjustment system can detect the corrosion state of the pipeline in real time, so as to adjust the output of the potentiostat in time and accurately, thereby eliminating the corrosion on the pipeline.

Description

technical field [0001] The invention belongs to the technical field of cathodic protection anticorrosion, and in particular relates to a pipeline cathodic protection output adjustment system and an adjustment method. Background technique [0002] Cathodic protection is a common technical means adopted for active anti-corrosion of pipelines. It uses a potentiostat to discharge the soil around the pipeline to generate an electric field to prevent the flow of electrons on the pipeline, thereby avoiding corrosion of the pipeline. Although the electric field generated by the discharge of the potentiostat provides cathodic protection for the pipeline, due to the long length of the pipeline and the frequent changes in the environment in which the pipeline is located, such as stray currents often exist in the soil, the stray current will affect the constant potential. The electric field generated by the instrument forms interference, which causes local corrosion of the pipeline. In...

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Problems solved by technology

[0003] At present, the output adjustment of the potentiostat is mainly based on the potential of the pipeline. In practical applications, the potential of the pipeline usually cannot accurately reflect the corrosion of the pipeline. Therefore, after the output adjustment of the potentiostat, the pipeline is still In case of further corrosion

Although the corrosion rate probe can directly detect the corrosion state of the pipeline, it cannot realize real-time detection, so it cannot timely feed back the corrosion state of the pipeline to the potentiostat, which makes the output adjustment of the potentiostat dull and lagging, and Since the measurement accuracy of the corrosion rate probe is not high, it cannot be guaranteed that the corrosion on the pipeline can be eliminated after the output of the potentiostat is adjusted.

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