Repair assembly for corrosion-resistant layer of buried pipeline and construction method

Abstract

The invention discloses a repair assembly for a corrosion-resistant layer of a buried pipeline and a construction method. The repair assembly is arranged outside a pipeline body in a covering mode, isof a layered structure and sequentially comprises an oily petrolatum primer, an oily petrolatum adhesive tape, an outer protective belt and an armored outer protective belt. The construction method comprises the steps of surface treatment of the pipe body, specifically, the pipe body is derusted through a handheld angular derusting machine, and the surface of the pipe body is washed with alcoholor acetone; b, repair construction of the corrosion-resistant layer, specifically, the oily petrolatum primer is smeared on the surface of the pipe body, and the oily petrolatum adhesive tape is manually wound on the surface of the pipe body in a wrapping mode from left to right; and c, repair construction of the outer protective layer, specifically, the outer protective belt is manually wound from left to right to fix and seal the anti-corrosion layer inside, and the armored outer protective belt is spirally wound outside the outer protective belt. According to repair assembly for the corrosion-resistant layer of the buried pipeline and the construction method, multiple oily protective layers are continuously formed on the surface of the workpiece based on the hydrophobic corrosion-resisting mechanism of oily petrolatum so that corrosive media cannot permeate into the workpiece, generation and spreading of corrosion can be rapidly prevented, and the effect is remarkable.

Description

technical field [0001] The invention relates to the field of pipeline anticorrosion, in particular to a buried pipeline anticorrosion layer repair kit and a construction method. Background technique [0002] Metal pipeline transportation is a safe and effective way to transport oil, gas, water and other liquid chemicals, and is widely used in petroleum, chemical, environmental protection and other industries. When external corrosion occurs to the metal pipeline, in addition to repairing the pipe body itself, the corresponding anti-corrosion layer needs to be repaired to avoid corrosion of the pipeline again in a short period of time. [0003] At present, the pipeline anticorrosion layer repair technology in the industry mainly includes: modified asphalt anticorrosion cold wrap tape repair, heat shrinkable sleeve repair, and liquid epoxy resin repair. The above repair technologies are faced with many problems in the actual application process, mainly including: the site cond...

AI Technical Summary

Problems solved by technology

The above-mentioned existing repairing technology needs good surface treatment on the pipeline surface before construction can be carried out, and it cannot be carried out with water

Moreover, the existing repair technology is usually on-site mixing or on-site baking, which is difficult to guarantee the quality and construction efficiency of the repaired anti-corrosion layer

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