Pipeline anti-corrosion layer and anti-corrosion pipeline

Abstract

The invention provides a pipeline anti-corrosion layer and an anti-corrosion pipeline. The pipeline anti-corrosion layer comprises an inner semi-conductive bonding layer, an insulating layer and an outer semi-conductive bonding layer which are sequentially arranged from inside to outside in the radial direction, wherein the inner semi-conductive bonding layer and the outer semi-conductive bondinglayer are formed by a uniform mixture of an adhesive and semi-conductive particles. According to the pipeline anti-corrosion layer and the anti-corrosion pipeline, the anti-corrosion effect of the pipeline can be improved, and particularly, the pipeline anti-corrosion layer and the anti-corrosion pipeline can well protect the pipeline against the damage from stray current.

Description

technical field [0001] The invention relates to pipeline transportation equipment technology, in particular to a pipeline anticorrosion layer and an anticorrosion pipeline. Background technique [0002] Natural gas, oil, water, etc. are usually transported by metal pipelines. During the use of metal pipelines, due to power lines or other reasons, stray currents will be formed in the pipelines through electromagnetic field coupling, and free electrons inside the metal will occur under the action of electric field forces. The directional movement separates the metal cations from the electrons, thereby causing corrosion to the metal pipeline. [0003] Therefore, in the prior art, it is usually necessary to perform an anti-corrosion process on the metal pipeline to form an anti-corrosion pipeline, so as to effectively prevent or slow down the corrosion phenomenon of the pipeline during use. The existing anti-corrosion pipeline includes a pipeline body and an insulating anti-cor...

AI Technical Summary

Problems solved by technology

[0004] However, the anti-corrosion pipelines in the prior art, because the insulating anti-corrosion layer and the surface of the pipeline body and the soil contact surface are uneven, so the insulation performance is affected, and it cannot resist lightning or the impact current of the power grid into the ground, which is easy to cause breakdown and damage the insulation and anti-corrosion. Micropores are formed on the insulation layer, and the micropores on the insulating anticorrosion layer will lead to the concentration of stray currents, resulting in concentrated electrical corrosion of the pipeline body, affecting the anticorrosion effect

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