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Glass steel pipeline on-site repair assembly and method

A glass fiber reinforced plastic and pipeline technology, applied in the direction of pipe components, pipes/pipe joints/pipe fittings, mechanical equipment, etc., can solve the problems of pipeline leakage and difficult quality assurance, and achieve the effect of improving construction efficiency and saving precious time.

Inactive Publication Date: 2019-03-19
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the winding of the knitted felt is all done manually on site. In the past, the site working conditions (low temperature) and other conditions were limited, and the quality was difficult to guarantee. Secondary leakage of the pipeline after maintenance often occurred

Method used

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  • Glass steel pipeline on-site repair assembly and method
  • Glass steel pipeline on-site repair assembly and method
  • Glass steel pipeline on-site repair assembly and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] On-site repair of glass steel pipes (DN100PN4MPa) with 10cm axial cracks in the pipeline

[0039] Step 1: Identify and confirm the failure position of the failed FRP pipe on site, and select components according to the length of the failure position, among which the length of the connection nipple is selected to be 50cm, the conversion nipple is selected to be DN80 to DN100, and the repair nipple is selected to be DN100 ;

[0040] Step 2: Taking the crack of the pipe body as the center, measure the damaged part of the pipe body with a length of 90cm (50cm is the length of the connection nipple, and 40cm is the length of the 2 conversion nipples) and cut it. Grind the tapered surface at the position where the length of the ends of the two pipelines to be repaired is 10cm, and the taper is consistent with the taper of the female end of the repaired short joint.

[0041] Step 3: Apply the blended A and B component adhesives to the polished outer tapered surface of the end...

Embodiment 2

[0046] On-site repair of glass steel pipes (DN80PN6MPa) with 50cm leakage at the corner of the pipeline

[0047] Step 1: Identify and confirm the failure position of the failed FRP pipe on site, and select components according to the length of the failure position, wherein the selected length of the connecting puppet is 200cm, and the selected specification of the repaired end puppet (13) is DN100. Since the diameter of the pipeline to be repaired is the same as that of the connecting nipple, the conversion nipple of the second part of the component is not selected in this example;

[0048] Step 2: Taking the crack of the pipe body as the center, measure the damaged part of the pipe body with a length of 200cm and saw it. Grind the tapered surface at the position where the length of the ends of the two pipelines to be repaired is 10cm, and the taper is consistent with the taper of the female end of the repaired short joint.

[0049] Step 3: Apply the blended A and B component...

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Abstract

The invention discloses a glass steel pipeline on-site repair assembly and method. The assembly comprises a connection structure, a repair pup joint and a conversion pup joint. One end of the conversion pup joint is connected with the connection structure, the other end of the conversion pup joint is connected with the repair pup joint, the repair pup joint is connected with a glass steel pipelineto be repaired, the connection structure comprises a connection sleeve, a connection pup joint, an inner core pipe and an outer core pipe, the connection pup joint is in a hollow cylinder shape, oneend of the connection pup joint is fixedly provided with an outer sleeve pipe coaxial with the connection pup joint, the inner core pipe is fixedly arranged on the portion, on the inner side of the outer sleeve pipe, of the connection pup joint, the inner core pipe and the outer sleeve pipe are coaxially arranged, an annular connection cavity is formed between the inner core pipe and the outer sleeve pipe, the end of the glass steel pipeline is clamped in the annular connection cavity, and the other end of the connection pup joint is sleeved with a connection sleeve. When the glass steel pipeis repaired, manufacturing of a connector of the pipeline to be repaired, connection between the connector on the pipeline to be repaired and the conversion pup joint and connection between the conversion pup joint and the connection pup joint can be rapidly completed, precious time is saved for on-site urgent repair, and the construction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of pipeline repair, and in particular relates to an on-site repair component and a repair method of a glass fiber reinforced plastic pipeline. Background technique [0002] In order to alleviate the oil field corrosion problem, FRP road, as an effective way to solve the corrosion problem of the ground gathering pipeline network, has been more and more widely used in some new projects and reconstruction and expansion projects. FRP has the advantages of small material specific gravity, strong corrosion resistance, smooth inner surface, low friction coefficient, small heat transfer coefficient, etc., making FRP the non-metallic pipe with the longest application time and the largest consumption. According to the difference of epoxy resin curing agent, it can be divided into acid anhydride cured glass steel pipe and aromatic amine cured glass steel pipe. The connection forms of FRP mainly include threaded connec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/16
CPCF16L55/1608
Inventor 齐国权戚东涛马秋荣魏斌李厚补丁楠张冬娜邵晓东蔡雪华
Owner BC P INC CHINA NAT PETROLEUM CORP
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