Pipeline anticorrosion coating and anticorrosion pipeline

Abstract

The invention provides a pipeline anticorrosion coating and an anticorrosion pipeline, wherein the pipeline anticorrosion coating is tubular and is used for wrapping a pipe body; the pipeline anticorrosion coating comprises an inner insulating layer, a semi-conductive bonding layer and an outer insulating layer, and the inner insulating layer, the semi-conductive bonding layer and the outer insulating layer are sequentially arranged from inside to outside in the radial direction of the pipeline anticorrosion coating; the semi-conductive bonding layer is a uniform mixture of an adhesive and semi-conductive particles; and the semi-conductive bonding layer is bonded with the inner insulating layer and the outer insulating layer. The pipeline anticorrosion coating can improve the anti-corrosion effect of the pipeline, and particularly can resist the damage of stray current to the pipeline.

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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