CN217178252U - Fiber-wound hydrogen storage bottle with polyurea coating and plastic liner - Google Patents

Abstract

The utility model discloses a fiber-wound hydrogen storage bottle with a polyurea coating for a plastic liner, which comprises a liner, wherein the liner is a plastic liner, a winding layer is wound outside the liner by fibers, and the polyurea coating is sprayed outside the winding layer by polyurea materials; this application forms the polyurea coating through adopting the polyurea material spraying outside the winding layer of hydrogen storage bottle, carries out outer protection to hydrogen storage bottle, because the polyurea coating has heat resistance, tensile resistance, anticorrosive, scour protection and grinds nature, pollution-free nature in transportation and installation, can compensate the defect that epoxy exists through spraying the polyurea coating to the security of better improvement hydrogen storage bottle.

Description

Fiber-wound hydrogen storage bottle with polyurea coating and plastic liner

Technical Field

The utility model relates to a compound high pressure vessel technical field, concretely relates to fibre winding's plastics inner bag hydrogen storage bottle with polyurea coating.

Background

The hydrogen energy is an ideal clean energy with high energy density and no pollution, and can be directly obtained from fossil raw materials or prepared by water electrolysis as a secondary energy. The development of hydrogen energy economy can reduce the emission of greenhouse gases and fine particles, realize energy diversification, and take hydrogen energy as the strategic development direction of future new energy in various national regions throughout the world. With the utilization of hydrogen energy, the hydrogen storage technology is rapidly developed, the existing small-sized hydrogen storage mainly utilizes a hydrogen storage bottle for storage, the I-type technology and the II-type technology are relatively mature, the III-type bottle adopts aluminum alloy as a liner, and has the advantages of light weight, high hydrogen storage density and the like, but the metal hydrogen embrittlement effect is more obvious along with the rise of hydrogen storage pressure, the upgrading space is limited by directly using the existing three-type bottle technical route, and the four-type bottle adopting the plastic liner winding has the characteristics of corrosion resistance, light weight, high strength, high hydrogen storage density per unit mass, long cycle life and low cost, is the development direction of the existing hydrogen storage bottle, and has good development prospect. The hydrogen storage bottle made of any material is cured by epoxy resin, but is hard but easily scratched, and has poor damping effect when being installed and fixed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims at providing a fiber winding's plastics inner bag hydrogen storage bottle with polyurea coating, the security is higher.

The utility model adopts the technical proposal that:

the utility model provides a fibre winding's plastics inner bag hydrogen storage bottle with polyurea coating, includes the inner bag, the inner bag is the plastics inner bag adopt the fibre winding to have the winding layer outside the inner bag, adopt polyurea material spraying to have the polyurea coating outside the winding layer.

Further, the polyurea coating thickness was 1 mm.

Further, the inner container comprises a bottle opening, a bottle bottom and a bottle body arranged between the bottle opening and the bottle bottom, and the bottle body is of a cylindrical structure.

Further, the winding layer is wound on the periphery of the bottle body of the inner container.

Furthermore, a connecting glue layer is arranged between the winding layer and the inner container.

Furthermore, the winding layer sequentially comprises a first winding layer, a second winding layer and a third winding layer from inside to outside, the first winding layer is wound on the periphery of the bottle body in an axial spiral mode along the inner container, the second winding layer is wound on the periphery of the first winding layer in an annular mode, and the third winding layer is wound on the periphery of the second winding layer in an axial crossed mode along the inner container.

Furthermore, the winding layer is made of epoxy resin or basalt fiber.

Furthermore, the connecting glue layer is made of epoxy resin.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural view of a fiber-wrapped hydrogen storage cylinder with a plastic liner having a polyurea coating according to an embodiment of the present application;

fig. 2 is an enlarged view of a portion a of fig. 1.

The bottle comprises an inner container 1, a bottle opening 11, a bottle bottom 12, a winding layer 2, a first winding layer 21, a second winding layer 22, a third winding layer 23, a polyurea coating 3 and a connecting glue layer 4.

Detailed Description

Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the related art. Therefore, the present invention is an improvement of the prior art, which substantially lies in the connection relationship between hardware, not in the functions and methods themselves, that is, the present invention relates to a few functions and methods, but does not include the improvements proposed in the functions and methods themselves. The present invention is described for better illustration of the function and method for better understanding of the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Referring to fig. 1-2, the fiber-wound hydrogen storage bottle with the polyurea coating comprises an inner container 1, wherein the inner container 1 is a plastic inner container, a winding layer 2 is wound outside the inner container 1 by fibers, and the polyurea coating 3 is sprayed outside the winding layer 2 by polyurea materials.

Polyurea materials are a class of compounds formed by the reaction of an isocyanate component with an amino compound. The melting point is as high as 320 ℃, the density is small, and the paint has good heat resistance, dyeing property and corrosion resistance. The tensile strength of the fiber is 0.0441-0.0539N/denier, the elongation is 23%, the fiber is used as a protection technology, is mainly used in four fields of water prevention, corrosion prevention, abrasion prevention and surface decoration, does not contain a catalyst, and is quickly cured. The paint is insensitive to moisture and temperature, is not influenced by the ambient temperature and humidity during construction, has two components, has 100 percent of solid content, does not contain any Volatile Organic Compound (VOC), has no pollution to the environment, and has extremely high tensile impact strength, flexibility, wear resistance, moisture and slip resistance, aging resistance and corrosion resistance. Has good thermal stability, can be used for a long time at 120 ℃, and can bear short-time thermal shock at 350 ℃.

This application forms polyurea coating 3 outside winding layer 2 of hydrogen storage bottle through adopting the polyurea material spraying, carries out outer protection to hydrogen storage bottle, because the polyurea coating has heat resistance, tensile resistance, anticorrosive, scour protection and grinds nature, pollution-free in transportation and installation, can compensate the defect that epoxy exists through spraying polyurea coating to the security of better improvement hydrogen storage bottle.

The polyurea material is prepared from a component A and a component B, wherein the ratio of the component A to the component B is 2: 1. Wherein, the polyurea A component is a semi-prepolymer prepared by the reaction of a hydroxyl-terminated compound and isocyanate, and the polyurea B component is a mixture composed of an amino-terminated resin and an amino-terminated chain extender.

The component A and the component B are commercially available products, and in the application, the component A and the component B of the polyurea adopt reinforced polyurea (Longdun hand-coating type) protective materials, namely Longdun anti-explosion coatings (hand-coating type), which are produced by Shanxi protection (Shanxi) science and technology limited company.

The liner 1 comprises a bottle opening 11, a bottle bottom 12 and a bottle body arranged between the bottle opening and the bottle bottom, wherein the bottle body is of a cylindrical structure. Polyurea coating 3 coats at the bottleneck of inner bag and the circular arc structure position and the body at the bottle bottom, and polyurea coating thickness is 1 mm.

In one exemplary embodiment, a hydrogen storage bottle having a volume of 10L, a mass of 3964 g before coating and an outer diameter of 162.4mm, and a total mass of 4170 g, an outer diameter of 163.4mm and a spray thickness of 1mm after coating with the polyurea coating.

The winding layer 2 is wound on the periphery of the bottle body of the inner container 1, and a connecting glue layer 4 is arranged between the winding layer 2 and the inner container 1. Specifically, the winding layer 2 sequentially comprises a first winding layer 21, a second winding layer 22 and a third winding layer 23 from inside to outside, the first winding layer 21 is wound on the periphery of the bottle body in an axial spiral mode through the liner 1, the second winding layer 22 is wound on the periphery of the first winding layer 21 in an annular mode, and the third winding layer 23 is wound on the periphery of the second winding layer 22 through the liner 1 in an axial crossed mode. The connecting glue layer 4 is arranged between the inner container 1 and the first winding layer 21.

Through set up the first winding layer of connecting glue film and the spiral winding of circumference between inner bag and the annular second winding layer for axial stress between inner bag and the annular second winding layer offsets, thereby has eliminated the layering fracture.

The winding layer adopts epoxy resin or basalt fiber to generate better compressive stress on the inner container; carbon fibers, glass fibers or composite fibers may also be used.

The connecting glue layer is mainly used for connecting the inner container and the first winding layer. The connection glue layer can be epoxy resin.

The polyurea coating is formed by spraying the following method:

s1, fixing the wound and solidified hydrogen storage bottle on a fixing bracket, and placing the hydrogen storage bottle in an environment with the room temperature of 25 ℃ and the relative humidity of 40 percent.

Specifically, the hydrogen storage bottle is formed by winding basalt with the volume of 10L, which is normally solidified, into the hydrogen storage bottle, wherein the mass of the basalt is 3964 g, and the outer diameter of the basalt is 162.4 mm; the hydrogen storage bottle was fixed to a fixing frame, and the room temperature in the environment was kept at 25 ℃ and the relative humidity was 40%. To prevent contamination of the spray, a clean film is laid on the floor.

S2, uniformly brushing the prepared polyurea material on the surface of the hydrogen storage bottle by using a brush, and standing for 30 minutes to solidify the polyurea material.

The polyurea material is prepared according to the specification, specifically, 200 g of the polyurea A component is taken and poured into a clean measuring cup, 100 g of the polyurea B component is taken and poured into another measuring cup, then the polyurea B component is poured into the measuring cup of the A component, timing is started, and a glass rod is used for stirring uniformly along the clockwise direction to fully fuse the two components. When stirring, the reaction change condition is observed while stirring, the stirred mixture is black ink color, is in a fluid state after being lifted by a glass rod, has low viscosity, gradually increases viscosity along with the prolonging of time, is in a thread-drawing state in 10 minutes, is in a paste state in 15 minutes, is in a jelly state in 20 minutes, and has the feeling of sticking hands when being touched by hands. Cured at 30 minutes and had some elasticity.

The prepared polyurea material is uniformly coated on the surface of the hydrogen storage bottle, and the polyurea coating is cured after about 30 minutes, so that the appearance is black and bright, and the hydrogen storage bottle is elastic when touched by hands.

S3, placing the hydrogen storage bottle coated with the polyurea material in a drying box with the temperature of 25 ℃ for curing for 168 hours to obtain the hydrogen storage bottle with the polyurea coating.

The hydrogen storage bottle coated with the polyurea material is placed in a drying box for drying, so that the polyurea coating can achieve the optimal curing effect.

This application adopts the polyurea material spraying to form the polyurea coating through the surface at fibre winding's plastics inner bag hydrogen storage bottle, under the condition of guaranteeing not to influence and change plastics inner bag physics and chemistry attribute and winding layer quality, has protected and ensured hydrogen storage bottle's compressive capacity, shock resistance, wear resistance, has preparation convenient operation, and is with low costs, efficient, the characteristics of environmental protection.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be an electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, system, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, systems, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (8)

1. The utility model provides a fibre winding's plastics inner bag hydrogen storage bottle with polyurea coating, includes the inner bag, its characterized in that, the inner bag is the plastics inner bag the inner bag adopts the fibre winding outward to have the winding layer, the winding layer adopts polyurea material spraying outward to have the polyurea coating.

2. The fiber wound plastic liner hydrogen storage bottle with a polyurea coating of claim 1, wherein the polyurea coating thickness is 1 mm.

3. The fiber-wrapped plastic liner hydrogen storage bottle with polyurea coating of claim 1, wherein the liner comprises a bottle mouth, a bottle bottom and a bottle body arranged between the bottle mouth and the bottle bottom, the bottle body is of a cylindrical structure.

4. The fiber-wrapped plastic liner hydrogen storage bottle with a polyurea coating as claimed in claim 3, wherein the wrapping layer is wrapped around the outer circumference of the body of the liner.

5. The fiber-wrapped plastic liner hydrogen storage bottle with a polyurea coating as claimed in claim 4, wherein a connecting glue layer is provided between the wrapping layer and the liner.

6. The fiber-wound hydrogen storage bottle with a polyurea coating according to claim 4, wherein the winding layer comprises a first winding layer, a second winding layer and a third winding layer from inside to outside in sequence, the first winding layer is wound around the periphery of the bottle body spirally along the axial direction of the liner, the second winding layer is wound around the periphery of the first winding layer in an annular manner, and the third winding layer is wound around the periphery of the second winding layer in an axial crossing manner along the liner.

7. The fiber wound plastic liner hydrogen storage cylinder with polyurea coating of claim 1, wherein the winding layer is of epoxy or basalt fiber.

8. The fiber wound plastic liner hydrogen storage bottle with polyurea coating of claim 5, wherein the tie glue layer is epoxy.

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