Mouth compensating method for pipeline corrosion protection layer and integrated mouth compensating machine

Abstract

The invention relates to a mouth repairing method for continuously molding three PE repaired mouth anticorrosion layers of a pipeline and an integrated mouth repairing machine. The mouth repairing method comprises the following steps that: the outer circumference of a steel tube section along a repaired mouth is subjected to heating of a steel tube, heating of a lap, coating of primer, winding and rolling of an anticorrosion belt, heating of the repaired mouth anticorrosion layer, the rolling of the repaired mouth anticorrosion layer and other working procedures and is provided with corresponding working procedure parts thereof, so that each working procedure part continuously operates to form the three PE repaired mouth anticorrosion layers according to the sequence of the working procedures when each working procedure part rotates along the outer circumference of the steel tube. The integrated mouth repairing machine has a cirque tubular structure which can be sleeved on a pipeline and can be opened and closed; a fixed ring rack of the machine is supported and fixed on the outer circumference of the repaired mouth pipe section; a rotary ring frame rack and the fixed ring rack are in circumferential guiding connection through a circumferential guiding mechanism; working procedure parts are arranged on the circumference of the rotary ring rack according to the sequence of the working procedures; and the rotary ring rack is driven by power to rotate along the pipeline to drive each working procedure part to perform continuous rotating operation along the outer circumferenceof the pipeline.

Description

technical field [0001] The invention relates to a process method and equipment for anti-corrosion layer repairing of steel pipes with anti-corrosion layers at the butt joints of the circumferential welds, especially for one-time loading and unloading and one-time mechanization of continuously forming three-layer PE anti-corrosion layer of pipes at the construction site The continuous forming jointing method and the integrated jointing machine for realizing this method. Background technique [0002] At present, the known method of repairing the anti-corrosion layer of the three-layer PE external anti-corrosion steel pipe at the butt circumferential weld is as follows: after the pretreatment of the anti-corrosion pipeline joint part is completed, the steel pipes are respectively arranged outside the ring of the pipe joint part for heating. , Fusion-bonded epoxy powder spraying, compound tape winding, fixing sheet pasting, joint anti-corrosion layer heating, joint anti-corrosio...

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Problems solved by technology

[0009] In order to overcome the shortcomings of the existing three-layer PE joint anti-corrosion layer of the pipeline, which is a semi-mechanical and semi-manual intermittent operation method, and the operating equipment is a plurality of split-type machine tool groups, which require multiple loading and unloading machines and tools, and low operating efficiency, the invention provides a The jointing method of continuously forming the three-layer PE jointing anti-corrosion layer of the pipeline and the integrated jointing machine for realizing this method, so that the forming operation of the three-layer PE jointing anti-corrosion layer of the pipeline can use an integrated jointing machine in one time Under the condition of loading and unloading, mechanized continuous forming pipe three-layer PE joint anti-corrosion layer to improve work efficiency

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