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Ultrahigh-temperature polymer polyethylene lining pipe

A technology of high molecular polyethylene and polyethylene pipes, applied in the direction of pipes/pipe joints/fittings, pipes, rigid pipes, etc., can solve problems such as misalignment of inner lining and outer pipe, high oil pressure, affecting flow rate, etc., to prevent Softening shrinkage, low cost, and enhanced product quality

Pending Publication Date: 2022-04-12
天信管业科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Salt and sulfide in petroleum have strong anti-corrosion properties, and pure polyethylene materials cannot resist;
[0006] 2. The deeper the oil is, the higher the temperature is, and the high temperature may cause the lining pipeline to soften and shrink, affecting the flow rate;
[0007] 3. The pressure of the oil drawn from the ground is high, which may cause dislocation of the inner lining and outer pipe under strong impact;

Method used

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  • Ultrahigh-temperature polymer polyethylene lining pipe
  • Ultrahigh-temperature polymer polyethylene lining pipe
  • Ultrahigh-temperature polymer polyethylene lining pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] see Figure 1-4 , an ultra-high temperature polymer polyethylene lined pipe, comprising an outer pipe 1, the inner side of the outer pipe 1 is inserted with a lined pipe 2;

[0047] The lining pipe 2 includes from the outside to the inside: a rubber tube layer 21, a glass fiber tube layer 22, a PE tube layer 23, a polyethylene tube layer 24, and the inner side of the polyethylene tube layer 24 is coated with a silicon carbide coating 25;

[0048] Both the PE pipe layer 23 and the polyethylene pipe layer 24 are heat-treated to increase internal stress;

[0049] Glass crystals are mixed into the PE pipe layer 23 to improve the toughness of the PE pipe layer 23 .

[0050] By using the composite lining pipe 2, the rubber pipe layer 21 increases the connection strength between the lining pipe 2 and the outer pipe 1, the glass fiber pipe layer 22 and the PE pipe layer 23 improve the toughness and high temperature resistance of the lining pipe 2, The silicon carbide coating ...

Embodiment 2

[0052] see Figure 1-4 , an ultra-high temperature polymer polyethylene lined pipe, comprising an outer pipe 1, the inner side of the outer pipe 1 is inserted with a lined pipe 2;

[0053] The lining pipe 2 includes from the outside to the inside: a rubber tube layer 21, a glass fiber tube layer 22, a PE tube layer 23, a polyethylene tube layer 24, and the inner side of the polyethylene tube layer 24 is coated with a silicon carbide coating 25;

[0054] The supporting mechanism 3 includes a supporting inner cavity 31 provided in the rubber tube layer 21 , and the supporting inner cavity 31 is fixedly connected with a supporting frame 32 .

[0055] The supporting inner chambers 31 are distributed at intervals, and the interval distance is inversely proportional to the heat fusion ratio of the lining pipe 2;

[0056] The thermal fusion ratio is the ratio of temperature rise and curvature of a one-meter-long lining pipe 2 fixed at both ends;

[0057] In this way, the easier the...

Embodiment 3

[0068] see Figure 1-4 , an ultra-high temperature polymer polyethylene lined pipe, comprising an outer pipe 1, the inner side of the outer pipe 1 is inserted with a lined pipe 2;

[0069] The lining pipe 2 includes from the outside to the inside: a rubber tube layer 21, a glass fiber tube layer 22, a PE tube layer 23, a polyethylene tube layer 24, and the inner side of the polyethylene tube layer 24 is coated with a silicon carbide coating 25;

[0070] The supporting mechanism 3 includes a supporting inner cavity 31 provided in the rubber tube layer 21 , and the supporting inner cavity 31 is fixedly connected with a supporting frame 32 .

[0071] The supporting inner chambers 31 are distributed at intervals, and the interval distance is inversely proportional to the heat fusion ratio of the lining pipe 2;

[0072] The thermal fusion ratio is the ratio of temperature rise and curvature of a one-meter-long lining pipe 2 fixed at both ends;

[0073] In this way, the easier the...

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Abstract

The invention discloses an ultra-high-temperature polymer polyethylene lining pipe which comprises an outer pipeline, and a lining pipeline is connected to the inner side of the outer pipeline in an inserted mode. Preferably, the lining pipeline comprises a rubber pipe layer, a glass fiber pipe layer, a PE pipe layer and a polyethylene pipe layer from outside to inside, and the inner side of the polyethylene pipe layer is coated with a silicon carbide coating. As optimization, a supporting mechanism for preventing the lining pipeline from being heated, softened and deformed is arranged in the rubber pipe layer. As optimization, the inner side of the lining pipeline is provided with a fixing mechanism for increasing the connection strength with the outer pipeline. According to the ultrahigh-temperature polymer polyethylene lining pipe, the composite lining pipeline is used, the rubber pipe layer improves the connecting strength of the lining pipeline and the outer pipeline, the glass fiber pipe layer and the PE pipe layer improve the toughness and the high temperature resistance of the lining pipeline, and the silicon carbide coating improves the corrosion resistance and the wear resistance of the lining pipeline; therefore, the performance of the lining pipeline is comprehensively improved, and the product quality is enhanced.

Description

technical field [0001] The invention relates to the technical field of polyethylene lined pipes, in particular to an ultra-high temperature polymer polyethylene lined pipe. Background technique [0002] Lined pipe is a kind of pipeline with steel or hard structure as the pipeline skeleton and anti-corrosion and high temperature resistant flexible material as the lining layer. Through its own physical and chemical properties, the effect of pipeline transmission medium on the external structure is reduced. Such as impact force, corrosion, etc., which greatly prolong the service life of the pipeline and reduce the cost of users. [0003] Polyethylene has good wear resistance and anti-corrosion properties, and is a high-quality material for manufacturing lined pipes; [0004] When the existing polyethylene-lined pipeline transports oil, there will be the following problems: [0005] 1. Salt and sulfide in petroleum have strong anti-corrosion properties, and pure polyethylene m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14F16L57/02F16L58/14
Inventor 田芳泽闫宇闫文科冯涛张彦梅
Owner 天信管业科技集团有限公司
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