CN116677837A - Fiber reinforced composite lining flexible pipe for hydrogen transportation and preparation method thereof - Google Patents
Fiber reinforced composite lining flexible pipe for hydrogen transportation and preparation method thereof Download PDFInfo
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- CN116677837A CN116677837A CN202310589352.4A CN202310589352A CN116677837A CN 116677837 A CN116677837 A CN 116677837A CN 202310589352 A CN202310589352 A CN 202310589352A CN 116677837 A CN116677837 A CN 116677837A
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- Prior art keywords
- hydrogen
- layer
- hydrogen permeation
- permeation resistant
- fiber reinforced
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 138
- 239000001257 hydrogen Substances 0.000 title claims abstract description 138
- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 25
- 125000004435 hydrogen atom Chemical class [H]* 0.000 title claims 2
- 238000002360 preparation method Methods 0.000 title abstract description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 108
- 239000010410 layer Substances 0.000 claims abstract description 103
- 229910052751 metal Inorganic materials 0.000 claims abstract description 51
- 239000002184 metal Substances 0.000 claims abstract description 51
- 239000000835 fiber Substances 0.000 claims abstract description 47
- 229920003023 plastic Polymers 0.000 claims abstract description 43
- 239000004033 plastic Substances 0.000 claims abstract description 43
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 28
- 239000011241 protective layer Substances 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 14
- 230000001070 adhesive effect Effects 0.000 claims abstract description 14
- 230000002787 reinforcement Effects 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims description 29
- 238000004804 winding Methods 0.000 claims description 28
- 229920001169 thermoplastic Polymers 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229920001903 high density polyethylene Polymers 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000004700 high-density polyethylene Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 4
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 238000005490 dry winding Methods 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 229920002748 Basalt fiber Polymers 0.000 claims 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000004831 Hot glue Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/042—Hoses, i.e. flexible pipes made of rubber or flexible plastics formed by bending a sheet and connecting the edges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
- F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
- F16L11/16—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to a fiber reinforced composite lining flexible pipe for hydrogen transportation and a preparation method thereof. The fiber reinforced composite lining flexible pipe for hydrogen transportation sequentially comprises from inside to outside: the metal lining layer is resistant to hydrogen permeation, the plastic lining layer is resistant to hydrogen permeation, the fiber reinforcement layer and the plastic outer protection layer. The hydrogen permeation resistant metal inner liner is bonded with the hydrogen permeation resistant plastic inner liner through an adhesive. The metal lining layer with hydrogen permeation resistance plays a main role in blocking hydrogen; the plastic lining layer which is resistant to hydrogen permeation is outside and plays an auxiliary role in blocking hydrogen; the hydrogen permeation resistant metal inner liner and the hydrogen permeation resistant plastic inner liner can effectively block hydrogen permeation under the combined action, and the fiber reinforced layer provides the pipe body with internal and external pressure resistance and tensile strength. The plastic outer protective layer provides the functions of blocking, wear resistance, impact resistance and the like. The fiber reinforced composite lining flexible pipe for hydrogen transportation can effectively ensure the safety of hydrogen transportation.
Description
Technical Field
The invention relates to the field of composite material pipelines, in particular to a fiber reinforced composite lining flexible pipe for hydrogen transportation and a preparation method thereof.
Background
The information disclosed in the background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
The hydrogen energy is used as a novel green clean energy, and the manufacture and transportation of hydrogen are key to green hydrogen production. The transportation of hydrogen is a major problem, long distance transportation of gas is generally mainly carried out by steel pipes, but the steel pipes have a plurality of problems, wherein the hydrogen embrittlement is the most important problem. Because the steel pipeline is exposed in hydrogen for a long time, hydrogen can permeate into the material, so that the mechanical property of the steel pipeline is reduced, the metal material is damaged, the crack expansion speed is increased, the fracture toughness is reduced, and the probability of hydrogen diffusion to the outside is increased. The higher the strength of the steel pipe, the higher the hydrogen concentration, and the more serious the hydrogen embrittlement phenomenon. The weld residual stress and structural non-uniformity at the weld location can accelerate hydrogen diffusion, and therefore the risk of hydrogen leakage at the pipe weld joint area is highest.
Therefore, a method for transporting hydrogen by using a composite pipe is provided, but in the disclosed technology for transporting hydrogen by using the composite pipe, the problem of hydrogen permeation in the transportation process cannot be well solved. The conventional composite pipe is difficult to meet the requirement of long-distance pipeline hydrogen transportation.
Disclosure of Invention
The invention aims to solve the problem that no pipeline suitable for long-distance and high-pressure hydrogen transportation exists at present. The steel pipe can be hydrogen embrittled, and the welding residual stress and the uneven structure at the welding seam position can accelerate the hydrogen diffusion, so that the hydrogen leakage easily occurs in the welding joint area of the pipe. The composite material pipeline adopts a polymer material as a pipeline lining layer, and has the problems of poor hydrogen permeation resistance and low pipeline pressure resistance level. Therefore, the invention designs a novel flexible pipeline for conveying hydrogen by adopting a fiber reinforced and composite lining structure.
In order to achieve the above purpose, the invention provides a fiber-reinforced composite lining flexible pipe for conveying hydrogen and a preparation method thereof. The pipeline utilizes the combined action of the hydrogen permeation resistant metal lining layer and the high-density polymer to effectively block the permeation of hydrogen and improve the permeation resistance of hydrogen transportation.
The invention provides a fiber reinforced composite lining flexible pipe for hydrogen transportation. The specific technical scheme is as follows: the innermost layer of the fiber-reinforced composite lining flexible pipe for hydrogen transportation is a hydrogen permeation resistant metal lining layer, the outer layer of the hydrogen permeation resistant metal lining layer is bonded with a hydrogen permeation resistant plastic lining layer by an adhesive to form a composite lining layer, the outer side of the composite lining layer is wound with a fiber reinforced layer, and the outer side of the fiber reinforced layer is wrapped with a thermoplastic plastic outer protective layer.
In order to manufacture the fiber reinforced composite lining flexible pipe for conveying hydrogen, the invention also provides a manufacturing method of the fiber reinforced composite lining flexible pipe for conveying hydrogen, which comprises the following specific steps:
s1 (hydrogen permeation resistant metal inner liner): firstly, preparing a continuous thin plate (belt or film) made of hydrogen permeation resistant metal into a continuous cylindrical hydrogen permeation resistant metal lining layer;
s2 (hydrogen permeation resistant plastic inner liner): uniformly coating an adhesive on the outer surface of the hydrogen permeation resistant metal inner liner, and extruding a hydrogen permeation resistant plastic inner liner outside the metal inner liner through a thermoplastic plastic extruder; the hydrogen permeation resistant metal inner liner and the hydrogen permeation resistant plastic inner liner form a composite inner liner structure through an adhesive, and a hydrogen permeation resistant function is provided;
s3 (fiber reinforcement layer): after the composite lining layer is cooled and molded, winding a fiber reinforced layer on the outer surface of the composite lining layer;
s4 (plastic outer protective layer): and extruding and coating a thermoplastic plastic outer protective layer outside the fiber reinforced layer.
As still further aspects of the present invention, the hydrogen permeation resistant metal liner layer material may be selected from the group consisting of hydrogen permeation resistant metal materials such as aluminum, copper, aluminized low carbon steel (carbon content less than 0.25%), copper plated low carbon steel (carbon content less than 0.25%), and the like.
As still further aspects of the present invention, the hydrogen permeation resistant metal inner liner may be manufactured by a roll-to-weld (UOE) process or a spiral winding process.
As a still further proposal of the invention, the adhesive is a hot melt adhesive, and the hot melt adhesive with ethylene-acrylic acid copolymer as a matrix, the hot melt adhesive with acrylic acid as a matrix or other hot melt adhesives with good bonding effect on metal and nonmetal polymers can be selected.
As a still further aspect of the present invention, the hydrogen permeation resistant metal inner liner may be manufactured using a UOE molding process of roll-to-weld, or may be spiral wound. The spiral winding method is used, the winding angle is between 30 DEG and 75 DEG (determined by the matching calculation of the pipe diameter and the width of the metal strip).
As a still further aspect of the present invention, the hydrogen permeation resistant plastic inner liner may be selected from one or more of high density polyethylene, polypropylene, polyamide, and polyphenylene sulfide.
As a still further aspect of the invention, the thermoplastic outer protective layer material is selected the same as the hydrogen permeation resistant plastic inner liner.
As a still further aspect of the present invention, the fiber reinforcement layer comprises resin and fiber, the resin material is selected in accordance with the material of the hydrogen permeation resistant plastic inner liner thermoplastic, and the fiber material is selected from one or more of glass fiber, carbon fiber, aramid fiber or other high strength fiber.
As a still further proposal of the invention, the number of the winding layers of the fiber reinforced layer can be between 10 and 60 layers (the specific number of the winding layers is required to be determined by adopting a mechanical theory analysis or a finite element simulation method according to the pipeline conveying pressure requirement), the specific winding mode can select dry winding of the fiber yarn, and the winding angle can be between 35 and 75 degrees.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a fiber reinforced composite lining flexible pipe for hydrogen transportation, which is sequentially provided with a hydrogen permeation resistant metal lining layer, a hydrogen permeation resistant plastic lining layer, a fiber reinforced layer and a plastic outer protective layer from inside to outside.
Compared with the existing technology for transporting hydrogen by utilizing a composite pipeline, the hydrogen permeation resistant metal lining layer is additionally arranged on the inner side of the plastic lining layer, and the hydrogen permeation resistant capability of the metal lining layer is superior to that of thermoplastic plastics, so that the hydrogen permeation rate of the innermost pipeline structure of the pipeline by taking the hydrogen permeation resistant metal lining layer is lower than that of the innermost pipeline structure of the pipeline by taking the thermoplastic plastics, the high-density polymer which can effectively prevent hydrogen from directly permeating into the plastic lining layer can be used for protecting the plastic lining layer better, and the effect of blocking hydrogen permeation can be improved better.
Compared with the traditional method for transporting hydrogen by using steel pipelines, the fiber reinforced composite lining flexible pipe for transporting hydrogen provided by the invention avoids the problem of hydrogen induced cracking of steel, has the advantages of long single length, light weight, good flexibility and the like, greatly reduces the transportation and construction cost of the pipelines, and can better ensure the safe transportation of hydrogen.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic structural view of a fiber reinforced composite liner flexible pipe for hydrogen transport; wherein, 1 is a hydrogen permeation resistant metal inner liner layer, 2 is a hydrogen permeation resistant plastic inner liner layer, 3 is a fiber reinforced layer, and 4 is a plastic outer protective layer;
fig. 2 is a radial sectional view of a fiber reinforced composite lining flexible pipe for hydrogen transfer, wherein 1 is a hydrogen permeation resistant metal lining layer, 11 is an adhesive, 2 is a hydrogen permeation resistant plastic lining layer, 3 is a fiber reinforced layer, and 4 is a plastic outer protective layer.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
A specific embodiment of the present invention will be described with reference to fig. 1 and 2.
The invention provides a fiber reinforced composite lining flexible pipe for hydrogen transportation, which can be seen from figures 1 and 2 from inside to outside, wherein 1 is a hydrogen permeation resistant metal lining layer, 11 is an adhesive, 2 is a hydrogen permeation resistant plastic lining layer, 3 is a fiber reinforced layer, and 4 is a plastic outer protective layer. The hydrogen permeation resistant metal lining layer is a single-layer metal, the thickness of the single layer is between 0.2mm and 2mm, and the material can be selected from aluminum, copper, aluminized low-carbon steel (the carbon content is lower than 0.25 percent), copper plated low-carbon steel (the carbon content is lower than 0.25 percent) and other hydrogen permeation resistant metal materials. For the manufacturing process of single-layer metal forming, the winding angle can be between 30 ° and 75 ° (determined by matching calculation of the pipe diameter and the width of the metal strip) by a roll-to-roll-welding forming process or by a spiral winding method.
The hydrogen permeation resistant plastic lining layer is made of thermoplastic plastics, which can be high-density polyethylene, polypropylene, polyamide or polyphenylene sulfide. The fiber reinforcement layer comprises resin and fiber, the resin material is consistent with the material of the hydrogen permeation resistant plastic inner liner thermoplastic plastic, and the fiber material can be glass fiber or one or more of carbon fiber, aramid fiber or other high-strength fiber. The number of winding layers of the fiber reinforced layer can be between 10 and 60 layers (calculated and determined according to pipeline conveying pressure requirements), the specific winding mode can be selected to be dry winding of fiber yarns, or the winding mode can be selected to be winding of a composite material belt made of continuous fibers and thermoplastic plastics, and the winding angle can be between 35 and 75 degrees.
Example 1
The manufacturing method of the fiber reinforced composite lining flexible pipe for hydrogen transportation comprises the following specific steps:
s1 (hydrogen permeation resistant metal lining layer), firstly rolling up and bending the edge of a continuous sheet made of aluminum into a U shape by a compression roller, then forming an O shape, and forming a round tube by longitudinal welding. In order to ensure roundness, the round tube can be subjected to pipeline expansion. The metal lining layer resistant to hydrogen permeation is formed through a series of processes such as compression roller-winding drum-welding and the like.
S2 (hydrogen permeation resistant plastic inner liner): and uniformly coating an adhesive (hot melt adhesive) on the outer surface of the hydrogen permeation resistant metal inner liner, and extruding the high-density polyethylene inner liner outside the metal inner liner through a thermoplastic plastic extruder. The hydrogen permeation resistant metal inner liner layer and the high-density polyethylene inner liner layer which are made of aluminum form a composite inner liner layer structure through an adhesive, and the function of hydrogen permeation resistance is provided.
S3 (fiber reinforcement layer): after the composite inner liner is cooled and formed, continuous glass fiber yarns are wound on the outer surface of the composite inner liner (the fiber yarns are immersed in high-density polyethylene resin before winding) to form a fiber reinforced layer. The fiber reinforced layer and the hydrogen permeation resistant plastic lining layer are not bonded.
And S4 (plastic outer protective layer) extruding and coating the high-density polyethylene thermoplastic plastic outer protective layer outside the fiber reinforced layer.
Example 2
The manufacturing method of the fiber reinforced composite lining flexible pipe for hydrogen transportation comprises the following specific steps:
s1 (hydrogen permeation resistant metal lining layer), firstly, rolling up and bending the edge of a continuous sheet made of copper into a U shape by a compression roller, then forming an O shape, and forming a round tube by longitudinal welding. In order to ensure roundness, the round tube can be subjected to pipeline expansion. The metal lining layer resistant to hydrogen permeation is formed through a series of processes such as compression roller-winding drum-welding and the like.
S2 (hydrogen permeation resistant plastic inner liner): and uniformly coating an adhesive on the outer surface of the hydrogen permeation resistant metal inner liner, and extruding a polypropylene inner liner outside the metal inner liner through a thermoplastic plastic extruder to obtain the hydrogen permeation resistant plastic inner liner. The hydrogen permeation resistant metal inner liner and the hydrogen permeation resistant plastic inner liner form a composite inner liner structure through an adhesive, and a hydrogen permeation resistant function is provided.
S3 (fiber reinforcement layer): and winding a carbon fiber reinforced polypropylene prepreg tape on the outer surface of the composite lining layer after the composite lining layer is cooled and molded. The first prepreg tapes and the plastic inner liner are bonded in a hot-melt mode, and meanwhile, each prepreg tape forms an integrated structure through hot-melt bonding.
And S4 (plastic outer protective layer) extruding and coating the polypropylene thermoplastic plastic outer protective layer outside the fiber reinforced layer.
In example 1, the fiber reinforced layer and the composite inner liner layer are not bonded, and relative sliding exists between the fiber reinforced layer and the composite inner liner layer under the action of external load (such as bending moment), so that the flexibility of the pipeline is better, and the allowable bending radius is smaller.
The fiber reinforced layer material of example 2 was a continuous fiber reinforced thermoplastic prepreg tape. The first fiber reinforced layer and the hydrogen permeation resistant plastic inner liner layer and each fiber reinforced layer form an integrated structure with higher strength in a hot melt bonding mode.
The specific implementation steps of the invention are simple and feasible, and the flexible continuous pipeline for hydrogen transportation with the inner diameter ranging from 50mm to 300mm and the pressure level of up to 32MPa can be produced.
The above embodiments are only two preferred embodiments of the present invention, and the present invention is not limited to the two embodiments, and various modifications in terms of material selection, forming modes and the like are still included in the scope of the present invention. It will be appreciated by those skilled in the art that variations, alternatives, and modifications, which implement all or part of the procedures described in the above embodiments and which are made by the appended claims, are intended to be encompassed within the scope of the present invention.
Claims (10)
1. The fiber reinforced composite lining flexible pipe for hydrogen transportation is characterized in that the fiber reinforced composite lining flexible pipe for hydrogen transportation comprises a composite lining layer, a fiber reinforced layer and a thermoplastic outer protective layer from inside to outside; the composite lining layer comprises a hydrogen permeation resistant metal lining layer and a hydrogen permeation resistant plastic lining layer, wherein the innermost layer is the hydrogen permeation resistant metal lining layer, the outer layer of the hydrogen permeation resistant metal lining layer is bonded with the hydrogen permeation resistant plastic lining layer by using an adhesive to form the composite lining layer, the outer side of the composite lining layer is wound with a fiber reinforced layer, and the outer side of the fiber reinforced layer is wrapped with a thermoplastic plastic outer protection layer.
2. The hydrogen-transporting fiber reinforced composite lined flexible pipe of claim 1, wherein the hydrogen permeation resistant metal liner layer material is selected from one or more of aluminum, copper, aluminized low carbon steel, copper plated low carbon steel; preferably, the carbon content of the aluminized low carbon steel is lower than 0.25%; preferably, the copper plated low carbon steel has a carbon content of less than 0.25%.
3. The hydrogen-transporting fiber reinforced composite lined flexible pipe of claim 1, wherein the hydrogen permeation resistant plastic liner is a hydrogen permeation resistant thermoplastic, preferably selected from one or more of high density polyethylene, polyamide, polypropylene, polyphenylene sulfide.
4. The fiber reinforced composite lining flexible pipe for hydrogen transportation according to claim 1, wherein the fiber reinforced layer comprises resin and fiber, the resin material is selected in accordance with the material of the hydrogen permeation resistant plastic lining thermoplastic plastic, and the fiber material is selected from one or more of glass fiber, carbon fiber, aramid fiber, ultra-high molecular weight polyethylene fiber and basalt fiber.
5. The flexible pipe with a fiber reinforced composite liner for hydrogen transport according to claim 1, wherein the thermoplastic outer protective layer is one or more selected from the group consisting of high density polyethylene, polyamide, polypropylene, polyphenylene sulfide.
6. The method for producing a fiber-reinforced composite lined flexible pipe for hydrogen transport according to any one of claims 1 to 5, comprising the steps of:
s1 (hydrogen permeation resistant metal inner liner): firstly, preparing a continuous thin plate (belt or film) made of hydrogen permeation resistant metal into a continuous cylindrical hydrogen permeation resistant metal lining layer;
s2 (hydrogen permeation resistant plastic inner liner): uniformly coating an adhesive on the outer surface of the hydrogen permeation resistant metal inner liner, and extruding a hydrogen permeation resistant plastic inner liner outside the metal inner liner through a thermoplastic plastic extruder; the hydrogen permeation resistant metal inner liner and the hydrogen permeation resistant plastic inner liner form a composite inner liner structure through an adhesive, and a hydrogen permeation resistant function is provided;
s3 (fiber reinforcement layer): after the composite lining layer is cooled and molded, winding a fiber reinforced layer on the outer surface of the composite lining layer;
s4 (plastic outer protective layer): and extruding and coating a thermoplastic plastic outer protective layer outside the fiber reinforced layer.
7. The method of manufacturing according to claim 6, wherein the hydrogen permeation resistant metal inner liner is manufactured using a roll-to-roll-welded UOE molding process or using a spiral winding method.
8. The method of claim 7, wherein the winding is performed at a winding angle of 30 ° to 75 ° by using a spiral winding method.
9. The method of manufacturing according to claim 7, wherein the roll-to-roll-welded UOE forming process comprises the steps of first rolling a continuous sheet (strip, film) of hydrogen permeation resistant metal, bending the sheet edge into a "U" shape by a roll, then forming an "O" shape, forming a round tube by longitudinal welding; preferably, the round tube is subjected to pipe expansion in order to ensure roundness.
10. The method according to claim 6, wherein the number of winding layers of the fiber reinforcement layer is between 10 and 60, the specific winding mode being selected from dry winding of the fiber yarn or winding of a composite material tape made of continuous fibers and thermoplastic, the winding angle being between 35 ° and 75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310589352.4A CN116677837A (en) | 2023-05-22 | 2023-05-22 | Fiber reinforced composite lining flexible pipe for hydrogen transportation and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310589352.4A CN116677837A (en) | 2023-05-22 | 2023-05-22 | Fiber reinforced composite lining flexible pipe for hydrogen transportation and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116677837A true CN116677837A (en) | 2023-09-01 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310589352.4A Pending CN116677837A (en) | 2023-05-22 | 2023-05-22 | Fiber reinforced composite lining flexible pipe for hydrogen transportation and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116677837A (en) |
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2023
- 2023-05-22 CN CN202310589352.4A patent/CN116677837A/en active Pending
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