Continuous Fiber Reinforced Unbonded Composite Flexible Pipe

A composite flexible and non-adhesive technology, applied in the direction of rigid pipes, pipes/pipe joints/fittings, hoses, etc., can solve the problems of reducing fluid flow rate, high production cost of pipes, and large friction coefficient, so as to prolong the service life, The effect of avoiding corrosion failure and easy installation

Active Publication Date: 2017-01-25
山东冠通管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This kind of pipeline has the following disadvantages: the metal structure functional layer has a large tension, and is easily eroded by microorganisms in seawater, hydrogen sulfide gas, carbon dioxide gas and other substances contained in oil and gas, and has a short service life; Poor fatigue performance, easy to fatigue failure
[0005] Secondly, the skeleton layer of the metal coil structure generates vortex-induced vibration during the fluid flow process. This structure has a large friction coefficient, which reduces the fluid flow rate and is prone to waxing and fouling to cause blockage; materials, resulting in higher pipe production costs and complex production processes

Method used

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  • Continuous Fiber Reinforced Unbonded Composite Flexible Pipe
  • Continuous Fiber Reinforced Unbonded Composite Flexible Pipe
  • Continuous Fiber Reinforced Unbonded Composite Flexible Pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0030] as attached figure 1 and attached figure 2 The shown invention proposes a continuous fiber-reinforced non-bonded composite flexible pipe, which is respectively provided with a non-metallic inner skeleton layer 1, an inner lining layer 2, a non-bonded reinforcement layer 3, an inner protective layer 4, and an outer layer from the inside to the outside. Skeleton layer 5, tensile layer 6, wear-resistant layer 9 and outer protective layer 7, wherein the non-metallic inner skeleton layer used to ensure uniform bending of the pipe and support the radial load of the pipe is provided with two fiberboard layers 8, from inside to The outer first fiberboard layer 8 is composed of four layers of wrapping tapes, and the second fiberboard layer 8 is composed of six layers of wrapping tapes. The wrapping tapes are composed of thermoplastic resin and fibers. The wrapping tapes in the two fiberboard layers 8 are 72° winding angle, 29mm winding width winding to form a non-metallic inne...

Embodiment 2

[0040] as attached image 3 The shown invention proposes a continuous fiber-reinforced non-bonded composite flexible pipe, which is respectively provided with a non-metallic inner skeleton layer 1, an inner lining layer 2, a non-bonded reinforcement layer 3, an inner protective layer 4, and an outer layer from the inside to the outside. Skeleton layer 5, tensile layer 6, wear-resistant layer 9 and outer protective layer 7, wherein the non-metallic inner skeleton layer used to ensure uniform bending of the pipe and support the radial load of the pipe is provided with 4 fiberboard layers, from the inside to the outside The first fiberboard layer is wrapped with four layers of winding tape, the second fiberboard layer is wound with six layers of winding tape, the third fiberboard layer is wound with four layers of winding tape, and the fourth fiberboard layer is composed of six layers of winding tape. The winding tapes are composed of thermoplastic resin and fibers, and the windi...

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Abstract

The invention relates to a pipe, in particular to a continuous fiber reinforced non-adhesive compound flexible pipe. The continuous fiber reinforced non-adhesive compound flexible pipe is characterized by comprising an inner frame layer, a liner layer, a non-adhesive reinforcing layer, an inner protective layer, an outer frame layer, an outer drawn layer, an anti-wear layer and an outer protective layer from inside to outside; the inner frame layer for ensuring uniform bending of the pipe and supporting radial load of the pipe is composed of at least four fiber layers; each fiber layer is made with wrapped straps of thermoplastic/thermosetting resin and fiber; the fiber wrapped straps in odd layers are wrapped at the angle of 50-90 degrees, and the width of the wrapped straps ranges from 20mm to 80mm. Compared with the prior art, the continuous fiber reinforced non-adhesive compound flexible pipe has the significant advantages that the pipe is resistant to corrosion, the service life is prolonged effectively and material cost is saved.

Description

technical field [0001] The invention relates to a pipe material, in particular to a continuous fiber reinforced non-adhesive composite flexible pipe with reasonable structure, long service life, high corrosion resistance, light weight, high strength, good flexibility and the like. Background technique [0002] With the exhaustion of oil and gas resources in land and shallow seas, offshore oil and gas exploration and development are rapidly developing into deep seas. At the same time, the demand for offshore oil pipelines has greatly increased. Compared with traditional metal pipes, the most prominent advantage of flexible pipes is that they can withstand large deformations. Not only does the use of flexible pipes in marginal oilfield development have certain advantages, such as easier laying and recycling, which can reduce the overall cost, but also if flexible pipes are used for deep-sea platform standpipes, fatigue damage caused by large deformation and vortex-induced vibr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/16F16L57/06F16L58/10
CPCF16L11/24F16L57/02F16L57/06F16L58/10
Inventor 白勇王森丛日峰
Owner 山东冠通管业有限公司
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