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Plugging ball type pipeline expanding device

A technology for sealing balls and pipes, which is applied in the field of expansion construction of thermoplastic pipes. It can solve the problems of small diameter expansion, low roundness of pipes, protruding annular residues at connecting parts, etc., so as to improve bearing pressure and reliable pipe connection. , the effect of uniform pipe deformation

Inactive Publication Date: 2021-04-09
YIBIN UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention: to propose a diameter-expanding tool for thermoplastic pipes, which overcomes the problems of the existing pipe diameter-expanding technology, such as small degree of diameter expansion, low roundness of pipes after diameter expansion, and inadaptability to end diameter expansion of long pipes; The problem of low axial strength of the hot-melt butt joint of existing thermoplastic pipes, and the problem of protruding annular residues at the connection part; at the same time, it solves the problem of low sealing pressure of the existing pipe plugging air bag

Method used

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  • Plugging ball type pipeline expanding device
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  • Plugging ball type pipeline expanding device

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Embodiment Construction

[0029] The present invention is not limited by the following implementation examples, and specific implementation manners can be determined according to the technical solutions of the present invention and actual conditions. The present invention is described below in conjunction with accompanying drawing. The positional relationship of up, down, left, right, etc. is based on the attached figure 1 determined by the layout direction.

[0030] A plugging ball type pipe diameter expansion device, comprising a plugging ball and a casing 5, the plugging ball is placed inside the pipe 4, the casing 5 is placed outside the pipe 4, and the plugging ball is inflated after being inflated or filled with water to displace the pipe 4 Diameter expansion, the pipe 4 is a thermoplastic pipe.

[0031] When carrying out the expansion construction of the thermoplastic pipeline 4, the sealing ball is placed in the port of the pipeline 4, and the casing 5 is arranged outside the pipeline 4. The...

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Abstract

The invention relates to a plugging ball type pipeline expanding device, and belongs to the field of pipeline construction. According to the technical scheme, a plugging ball is arranged in a pipeline, a shell is arranged outside the pipeline, and the plugging ball expands after being inflated or filled with water to expand the pipeline. According to the plugging ball type pipeline expanding device, the shell serves as a mold, the shape and size of the thermoplastic pipeline are controllable after expanding, and expanding can be conveniently carried out according to installation and design requirements; and end covers and inhaul cables are arranged at the two ends of the plugging ball, axial deformation of an air bag body is restrained, and the bearing pressure of the air bag body can be greatly improved.

Description

technical field [0001] The invention relates to the field of pipeline construction, and more specifically relates to the expansion construction of thermoplastic pipelines. Background technique [0002] PVC pipes, polyethylene pipes, polypropylene pipes, polyoxymethylene pipes, etc. have the advantages of low cost, corrosion resistance, and convenient construction, and are widely used in oil and gas transmission, urban gas, tap water pipe networks and other fields. At present, the above-mentioned pipes are mainly connected by hot-melt butt joint, that is, the ends of the pipes are extruded together after being softened by heating. The construction of this type of connection method is relatively simple, but due to the limitation of the characteristics of the polymer material itself, the axial strength of the hot-melt connection part is low; and the extrusion part of the pipe leaves a protruding ring-shaped residue, which limits the passage of the pig and causes The pipeline i...

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Application Information

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IPC IPC(8): B29C57/06B29C35/02
CPCB29C57/06B29C35/02B29C2035/0211
Inventor 何虹钢王添吴辉茂邓海波
Owner YIBIN UNIV
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