CN218294774U

CN218294774U - Defeated hydrogen is with fine winding composite pipe of glass

Info

Publication number: CN218294774U
Application number: CN202221325953.1U
Authority: CN
Inventors: 唐作成; 赵明亮; 李永峰; 鱼江涛; 王耀; 马志潮
Original assignee: Ningxia Qinglong Plastic Pipes Co ltd
Current assignee: Ningxia Qinglong Plastic Pipes Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2023-01-13
Anticipated expiration: 2032-05-30

Abstract

The utility model provides a defeated hydrogen is with fine winding composite pipe of glass, a defeated hydrogen is with fine winding composite pipe of glass is equipped with core tube layer, enhancement layer, outer inoxidizing coating from interior to exterior in proper order, and wherein the core tube layer has the stereoplasm aluminum pipe of aluminium oxide coating for the surface. The aluminum oxide coating has good hydrogen resistance, and can prevent gas-phase hydrogen from entering a matrix, and the composite pipeline core tube layer adopts a hard aluminum tube with the aluminum oxide coating on the surface, so that the composite pipeline has hydrogen brittleness resistance and hydrogen resistance.

Description

Defeated hydrogen is with fine winding composite pipe of glass

Technical Field

The utility model relates to a compound pipeline technical field especially relates to a defeated hydrogen is with fine winding compound pipeline of glass.

Background

One of the difficulties in hydrogen energy utilization is hydrogen storage and transportation, long-distance gas pipelines generally adopt steel materials, but hydrogen has the characteristics of strong chemical activity, small density, large diffusion coefficient and the like, after hydrogen enters metal, the hydrogen is polymerized into hydrogen molecules after the local hydrogen concentration reaches saturation, stress concentration is caused, the metal plasticity is reduced, cracks or fractures are induced, manganese steel, nickel steel and other high-strength steel are easy to generate hydrogen embrittlement, and the metal is exposed in the hydrogen for a long time, particularly under high temperature and high pressure, the strength of the metal is greatly reduced, so that the metal fails. Therefore, how to reduce the cost and safety risk of pipeline hydrogen transportation is always a global discussion of the hot industrial issue.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art long distance gas pipeline's technical drawback has proposed a new compound pipeline.

The PE100-RC disclosed by the patent is a cracking-resistant polyethylene material developed by Dadall, france.

In order to realize the purpose of the utility model, the utility model provides a defeated hydrogen is with fine winding composite pipe of glass, concrete technical scheme is as follows:

a glass fiber wound composite pipeline for hydrogen delivery is sequentially provided with a core pipe layer, a reinforcing layer and an outer protective layer from inside to outside, wherein the core pipe layer is a hard aluminum pipe with an aluminum oxide coating on the surface.

The aluminum oxide coating has good hydrogen resistance, and can prevent gas-phase hydrogen from entering a matrix, and the composite pipeline core tube layer adopts a hard aluminum tube with the aluminum oxide coating on the surface, so that the composite pipeline has hydrogen embrittlement resistance and hydrogen resistance.

Further, in order to improve the service life of the composite pipe, the outer protective layer is preferably PE100-RC, and the PE100-RC has excellent slow crack growth resistance.

Furthermore, in order to prolong the service life of the pipeline and avoid abrasion to the pipeline under the high-speed flushing of air flow, a wear-resistant layer is arranged in the core pipe layer and is made of wear-resistant plastic.

Furthermore, in order to meet the requirements of the hydrogen delivery pipeline, the reinforcing layer comprises a glass fiber reinforcing layer and an annular reinforcing layer, the glass fiber reinforcing layer is located in the inner layer of the annular reinforcing layer, the annular reinforcing layer improves the rigidity of the pipeline, and the glass fiber reinforcing layer improves the pressure-resistant grade of the pipeline.

Furthermore, in order to meet the pressure requirement of the hydrogen conveying pipeline, the glass fiber reinforced layer is a glass fiber prepreg tape, and the number of layers of the glass fiber prepreg tape is not less than 4.

Further, in order to improve the safety performance of the pipeline, a flame retardant layer is arranged between the reinforcing layer and the outer protective layer.

Further, in order to ensure the safety performance of the pipeline and improve the heat insulation and earthquake resistance performance, the flame-retardant layer is preferably hard flame-retardant polyurethane foam plastic.

The utility model provides a defeated hydrogen is with fine winding composite pipe of glass, beneficial effect is in: the core tube layer is a hard aluminum tube with an aluminum oxide coating on the surface, the aluminum oxide coating has good hydrogen resistance and can prevent gas-phase hydrogen from entering a substrate, and the hard aluminum tube with the aluminum oxide coating on the surface is adopted in the composite pipeline core tube layer, so that the composite pipeline has hydrogen embrittlement resistance and hydrogen resistance; the core pipe layer is internally provided with a wear-resistant layer which is made of wear-resistant plastic, so that the pipeline is prevented from being worn under the high-speed flushing of airflow; the enhancement layer includes glass fiber reinforcement layer and hoop and adds the muscle layer, and glass fiber reinforcement layer is located the inlayer that the hoop adds the muscle layer, and glass fiber reinforcement layer is glass fiber prepreg tape, and the number of piles of winding glass fiber prepreg tape is greater than or equal to 4 layers, and glass fiber reinforcement layer has improved the withstand voltage grade of pipeline, and the hoop adds the muscle layer and has improved the rigidity of pipeline, under the prerequisite of guaranteeing the hydrogen resistance performance of pipeline, and the thickness demand on the core tube layer significantly reduces, has reduced the manufacturing cost of pipeline, has reduced the whole weight of pipeline.

Drawings

FIG. 1 is a schematic structural view of a composite conduit;

fig. 2 is a radial cross-sectional view of the composite conduit.

In the figure, 1, a wear-resistant layer, 2, a core tube layer, 3, a glass fiber reinforced layer, 4, a circumferential reinforced layer, 5, a flame-retardant layer, 6, an outer protective layer and 7, a reinforced layer are arranged.

Detailed Description

The following describes an embodiment of the present invention with reference to fig. 1 to 2

The utility model provides a glass fiber winding composite pipeline for hydrogen transportation, as shown in figures 1 and 2, a wear-resistant layer 1, a core pipe layer 2, a reinforcing layer 7, a flame-retardant layer 5 and an outer protective layer 6 are sequentially arranged from inside to outside; the wear-resistant layer 1 is made of wear-resistant plastic, so that the pipeline is prevented from being worn under the high-speed flushing of airflow; the core tube layer 2 is an aluminum tube with an aluminum oxide coating on the surface, and vapor-phase hydrogen is prevented from entering the substrate through the aluminum oxide coating; the reinforcing layer 7 comprises a glass fiber reinforcing layer 3 and a circumferential rib-adding layer 4, the glass fiber reinforcing layer 3 is positioned in the inner layer of the circumferential rib-adding layer 4, the glass fiber reinforcing layer 3 is a glass fiber prepreg tape, the number of layers of winding the glass fiber prepreg tape is not less than 4, the pressure-resistant grade of the pipeline is improved by winding a continuous glass fiber prepreg tape, the rigidity of the pipeline is improved by winding a high-strength reinforcing rib on the circumferential rib-adding layer 4, the rigidity and the pressure-resistant grade of the pipeline are improved by winding the glass fiber reinforcing layer 3 and the circumferential rib-adding layer 4, the thickness requirement on the core pipe layer 2 is greatly reduced, the production cost of the pipeline is reduced, and the overall weight of the pipeline is reduced; the flame-retardant layer 5 is made of hard flame-retardant polyurethane foam plastic, so that the safety performance of the pipeline is improved, and the heat insulation and anti-seismic performance are also improved; the outer protective layer 6 is PE100-RC, the PE100-RC has excellent slow crack growth resistance, and the design service life still meets the requirement under the conditions that the pipe wall has scratches and bears point loads.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the invention.

Claims

1. A glass fiber wound composite pipeline for hydrogen delivery is characterized in that a core pipe layer (2), a reinforcing layer (7) and an outer protective layer (6) are sequentially arranged from inside to outside,

the core tube layer (2) is a hard aluminum tube with an aluminum oxide coating on the surface.

2. The glass fiber wound composite pipe for hydrogen gas transmission according to claim 1, wherein the outer protective layer (6) is preferably PE100-RC.

3. The glass fiber wound composite pipeline for hydrogen transportation according to claim 1, wherein a wear-resistant layer (1) is arranged in the core pipe layer (2), and the wear-resistant layer (1) is made of wear-resistant plastic.

4. The glass fiber wound composite pipeline for hydrogen transportation according to claim 1, wherein the reinforcing layer (7) comprises a glass fiber reinforcing layer (3) and a circumferential reinforced layer (4), and the glass fiber reinforcing layer (3) is positioned at the inner layer of the circumferential reinforced layer (4).

5. The glass fiber wound composite pipeline for hydrogen transportation according to claim 4, wherein the glass fiber reinforced layer (3) is a glass fiber prepreg tape, and the number of layers of the glass fiber prepreg tape is not less than 4.

6. The glass fiber wound composite pipeline for hydrogen gas transmission according to claim 1, wherein a flame retardant layer (5) is arranged between the reinforcing layer (7) and the outer protective layer (6).

7. The glass fiber wound composite pipe for hydrogen transmission according to claim 6, wherein the flame retardant layer (5) is preferably rigid flame retardant polyurethane foam.