Buried steel pipeline polyethylene anti-corrosion layer elbow special overhaul special belt

Abstract

The invention discloses a special overhaul special belt for buried steel pipeline polyethylene anti-corrosion layer elbow, which comprises a first baffle plate, one end of the first baffle plate is provided with a second baffle plate, and a gap between the first baffle plate and the second baffle plate is provided. A winding wheel is provided, and a repair belt mechanism is arranged on the surface of the winding wheel. The special belt for overhauling the polyethylene anti-corrosion layer of the buried steel pipeline of the present invention is provided with a repair belt mechanism, and the non-woven layer and the reinforcing silk layer are contained in the inside. The tensile strength ensures that the repair tape wound on the surface will not be deformed or broken, and the reinforcing silk layer is made of polyester silk material, which has high rigidity and can cooperate with the non-woven layer to further improve the tensile resistance of the repair tape. In addition, the material itself is elastic and rebounds quickly, which can make the repair belt have strong recovery ability. At the same time, with the roller coating structure, it can still be easily operated when facing the uneven surface of the elbow, so that the pipeline can be repaired in place.

Description

technical field [0001] The invention relates to the technical field of polyethylene anti-corrosion tapes, in particular to a special overhaul special tape for elbows with polyethylene anti-corrosion layers of buried steel pipes. Background technique [0002] Polyethylene anti-corrosion tape is composed of two parts: base film and adhesive layer. The base film is polyethylene film, and the adhesive layer is butyl rubber. It has good mechanical strength and adhesion and sealing performance. According to its function, it can be divided into anti-corrosion tape, Protective belts and patching belts are divided into ordinary grade, reinforced grade and extra reinforced grade according to the requirements of the anti-corrosion layer. They are mainly used in oil and natural gas transmission, water supply and drainage and gas transmission in chemical industry, urban construction and other buried steel pipelines. The outer surface is anti-corrosion, and has the characteristics of conv...

AI Technical Summary

Problems solved by technology

[0002] Polyethylene anti-corrosion tape is composed of base film and adhesive layer. The base film is polyethylene diaphragm and the adhesive layer is butyl rubber. It has good mechanical strength and bonding and sealing performance. According to its function, it can be divided into anti-corrosion tape, Protective belts and patching belts are divided into ordinary grades, reinforced grades and extra-reinforced grades according to the requirements of the anti-corrosion layer grades. They are mainly used in buried steel pipelines such as petroleum and natural gas transmission, chemical industry, water supply and drainage and gas transmission in urban construction. The outer surface is anti-corrosion, with the characteristics of convenient construction and no pollution. When the pipeline is installed, used or repaired, workers are often arranged to carry out winding treatment; Some disadvantages are that the stretching ability of the card is not strong, so that it is easy to deform and break after being wound on the pipe, and when encountering impacts, etc., the recovery ability of the tape is poor. At the same time, when winding the elbow, the operation is more troublesome

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