Non-sticking thermal plasticity composite material flexible pipe and preparation process thereof

A composite material and composite material tape technology, applied in the direction of hoses, pipes, mechanical equipment, etc., can solve the problems of difficult curing effect control, toxicity and pollution, repeated winding, etc., to achieve excellent anti-fatigue properties, cost-effective, good seawater resistance

Active Publication Date: 2017-07-25
WEIHAI NACHUAN PIPE FITTINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pipeline is also partly made of thermosetting resin material, which is usually difficult to control the curing effect, and some raw materials used, such as curing agent, are highly toxic and polluting, which is not conducive to recycling
Moreover, the preparation process of this kind of pipe is cumbersome, and may require repeated winding, extrusion and other processes

Method used

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  • Non-sticking thermal plasticity composite material flexible pipe and preparation process thereof
  • Non-sticking thermal plasticity composite material flexible pipe and preparation process thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0058] The preparation process of the non-bonded thermoplastic composite flexible pipe comprises the following steps:

[0059] 1) First, the composite material belt with a width of 30-50mm and a fiber content of 60-70% is lapped and wound according to the winding angle α between the composite material belt and the mandrel axis, 70°≤α<90°, adjacent composite material belts The overlapping area ranges from 3 to 10mm. Laser heating is used to heat the overlapping area of ​​adjacent composite material tapes to melt them while winding. The temperature range of laser heating is: 180-360°C. , use a tensioning device to apply a winding tension of 300-500N to the composite material tape, and apply a pressure of 100-200N through the pressure roller to bond the overlapping area;

[0060] 2) Wrap the composite material tape with a width of 30-50 mm and a fiber content of 60-70% in the direction opposite to the winding angle of the innermost layer of the lining skeleton layer, that is, at ...

Embodiment 1

[0083] The non-bonded thermoplastic composite flexible pipe is respectively an inner lining skeleton layer 1, a wear-resistant layer 4, a tensile layer 2, a wear-resistant layer 2, a compressive layer 3, a wear-resistant layer 4, and an outer protective layer 5 from the inside to the outside. , this structure is suitable for oil and gas transportation in medium and low pressure environments.

[0084] (1) Fabrication of lining skeleton layer 1

[0085] 1) The inner lining skeleton layer adopts polyphenylene sulfide PPS glass fiber tape with a width of 50 mm, a thickness of 0.25 mm, and a fiber content of 70%, and is wound according to the winding angle of 80° between the polyphenylene sulfide PPS glass fiber tape and the mandrel axis The overlapping area of ​​adjacent polyphenylene sulfide PPS glass fiber tapes is 10mm, and the laser heating method is used to heat the overlapping area of ​​adjacent composite material tapes to melt them. The temperature range of laser heating is...

Embodiment 2

[0100] The non-bonded thermoplastic composite flexible pipe is respectively the lining skeleton layer 1, the wear-resistant layer 4, the tensile layer 2, the wear-resistant layer 2, the compressive layer 3, the wear-resistant layer 4, and the tensile layer 2 from the inside to the outside. , wear-resistant layer 4, pressure-resistant layer 3, wear-resistant layer, and outer protective layer 5. This structure is more suitable for oil and gas transportation in high-pressure environments.

[0101] (1) Fabrication of lining skeleton layer 1

[0102] 1) The lining skeleton layer is made of polyether ether ketone PEEK carbon fiber tape with a width of 45 mm, a thickness of 0.30 mm, and a fiber content of 70%, and is formed by winding the PEEK carbon fiber tape and the mandrel axis at an angle of 85° The overlapping area of ​​adjacent PEEK carbon fiber tapes is 10mm, and the overlapping area of ​​adjacent PEEK carbon fiber tapes is heated to melt by laser heating. The temperature ran...

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Abstract

The invention provides a non-sticking thermal plasticity composite material flexible pipe and a preparation process thereof. A liner skeleton layer and an outer protecting layer are arranged at an innermost layer and an outermost layer of the flexible pipe. At least one tension resisting layer and at least one compression resisting layer are arranged between the liner skeleton layer and the outer protecting layer. An abrasion resisting layer is arranged between every two arbitrary layers of the liner skeleton layer, the tension resisting layers, the compression resisting layers and the outer protecting layer. The liner skeleton layer is formed by winding, heating melting and press fit bonding of composite material belts with different fiber contents, wherein the winding angle of the composite material belts and the core mould axis is larger than or equal to 70 degrees and smaller than 90 degrees. The fiber content of the liner skeleton layer is decreased gradually from inside to outside, the winding layer number of each kind of the composite material belts is even, and the winding directions between every two adjacent layers are opposite. The non-sticking thermal plasticity composite material flexible pipe and the preparation process thereof have the beneficial effect of having the remarkable advantages that the flexibility and strength of a common steel flexible pipe are achieved, better corrosion resistance and the excellent fatigue resisting characteristic are achieved, the mass is light, and the cost performance is high.

Description

technical field [0001] The invention relates to the technical field of thermoplastic composite pipe manufacturing, in particular to a flexible pipe of non-bonding thermoplastic composite material and a preparation process thereof. Background technique [0002] With the continuous development of the global oil and gas extraction industry, the demand for pipelines used in offshore oil and gas extraction is increasing. Comparatively speaking, offshore oil and gas development is much more complex than onshore operations, and has high requirements for pipeline performance such as fatigue resistance, compression resistance, temperature resistance, and corrosion resistance. [0003] Flexible pipe has the advantages of corrosion resistance, light weight, coilability, easy installation and recycling, and reduced overall cost, and has attracted widespread attention in the industry. At present, flexible pipe products with various cross-sectional structures have appeared in the world. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/24F16L11/02B29C53/56
CPCF16L11/02F16L11/24B29C53/566
Inventor 王森慈胜宗时晨于志猛孙晓林王晓欣
Owner WEIHAI NACHUAN PIPE FITTINGS
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