Multilayer hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage

Abstract

The utility model discloses a multilayer hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage, and relates to the technical field of hydrogen storage bottles, the multilayer hydrogen storage bottle comprises a cylindrical bottle body and a sealing cover matched with the bottle body for use, the bottle body comprises a shell protection layer, a temperature control coil pipe layer and a pressure bearing layer which are sequentially arranged from outside to inside, the shell protection layer is fixedly connected with the pressure bearing layer, and the temperature control coil pipe layer is fixedly connected with the shell protection layer. A heat preservation cavity is formed between the shell protection layer and the pressure bearing layer. The carbon nano tube is filled in the bottle body, the hydrate hydrogen storage layer is arranged between the carbon nano tube and the inner wall of the bottle body, and the hydrate hydrogen storage layer can form a layer of hydrate wall to wrap the carbon nano tube, so that the hydrogen storage density is improved, the hydrogen adsorption stability of the carbon nano tube is enhanced, and the hydrogen storage effect is improved in a storage state. Even if the hydrogen is decomposed due to the change of external conditions, the high-pressure environment formed by the hydrate wall can effectively inhibit further decomposition of the hydrogen, so that the stability of the hydrogen storage system is kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen storage bottle technical field especially relates to a kind of multilayer hydrogen storage bottles based on carbon adsorption and hydrate hydrogen storage. BACKGROUND

[0002] With the transformation of global energy structure to clean, low-carbon direction, hydrogen energy as a kind of efficient, environmental protection energy carrier, gradually become the important component of future energy system, and hydrogen storage technology as one of the core links of hydrogen energy application, directly affect the storage, transportation and use efficiency of hydrogen energy. At present, high-pressure gaseous hydrogen storage, liquid hydrogen storage and solid hydrogen storage are the mainstream hydrogen storage mode, and the traditional high-pressure hydrogen storage bottle is usually made of single-layer metal or composite material, which can meet the demand of hydrogen storage to a certain extent, but it is difficult to cope with the change of external hydrogen storage conditions, such as high temperature environment, the internal pressure of hydrogen storage bottle rises sharply, which can easily cause hydrogen decomposition or material strength reduction. The existing hydrogen storage bottle cannot inhibit the decomposition of hydrogen in time, which will affect the stability and safety of hydrogen storage system. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a kind of multilayer hydrogen storage bottles based on carbon adsorption and hydrate hydrogen storage, solve the technical problem proposed in the above background art.

[0004] To solve the above technical problems, the utility model provides the following technical scheme: a kind of multilayer hydrogen storage bottles based on carbon adsorption and hydrate hydrogen storage, including cylindrical bottle body and the sealing cover matched with bottle body, the bottle body includes the outer shell protective layer, temperature control coil layer and pressure-bearing layer sequentially arranged from outside to inside, the outer shell protective layer is fixedly connected with pressure-bearing layer, and the outer shell protective layer and pressure-bearing layer form insulation cavity, the temperature control coil layer is spirally arranged in insulation cavity, and the temperature control coil layer is welded to the outer wall of pressure-bearing layer.

[0005] The inside of the pressure-bearing layer is filled with carbon nanotube for adsorbing hydrogen, the carbon nanotube and pressure-bearing layer are provided with hydrate hydrogen storage layer, and the side of hydrate hydrogen storage layer close to carbon nanotube is provided with water isolation and gas permeation membrane for hydrogen flow and isolating water and carbon nanotube.

[0006] Further, the outer shell protective layer and the outer part of sealing cover are fixedly installed with flange, and the two flanges are connected by flange bolt.

[0007] Further, the bottom of the sealing cover is provided with first sealing groove, and the sidewall of the sealing cover is provided with at least two second sealing grooves which are longitudinally equidistantly distributed, and the inner wall of the outer shell protective layer is installed with sealing strip matched with first sealing groove and second sealing groove.

[0008] Further, the temperature control coil layer is made of flat copper pipes, and the ratio of the width to the inner wall thickness of the copper pipe is 5:1-10:1.

[0009] Further, the pressure bearing layer is made of high-strength aluminum alloy material, and the surface of the pressure bearing layer is subjected to oxidation treatment.

[0010] Further, the water-resisting and air-permeating film is made of carbon-based adsorption material, and the thickness of the water-resisting and air-permeating film is 0.5-1.5 mm.

[0011] Further, the outer shell protection layer is made of stainless steel material, and the outer wall of the outer shell protection layer is sprayed with anticorrosive paint.

[0012] Further, the bottom of the outer shell protection layer is provided with an air inlet.

[0013] By means of the above technical scheme, the multi-layer hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage has at least the following beneficial effects:

[0014] 1. The bottle body is filled with carbon nanotubes, and a hydrate hydrogen storage layer is arranged between the carbon nanotubes and the inner wall of the bottle body, so that a hydrate wall is formed to wrap the carbon nanotubes, thereby improving the hydrogen storage density and enhancing the stability of hydrogen adsorption of the carbon nanotubes.

[0015] 2. The multi-layer concentric circle structure design is combined with the multi-stage sealing mechanism, so that the structural strength of the hydrogen storage bottle as a whole is improved, and the safety of the hydrogen storage bottle is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the application without imposing undue limitation thereon. In the drawings:

[0017] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 is a sectional view of the utility model;

[0019] Figure 3 is a schematic diagram of the bottle body structure of the utility model;

[0020] Figure 4 is a schematic diagram of the cover structure of the utility model.

[0021] In the figure: 1, bottle body; 101, outer shell protective layer; 102, temperature control coil layer; 103, pressure bearing layer; 104, heat preservation cavity; 105, air inlet; 2, cover; 201, first sealing groove; 202, second sealing groove; 3, carbon nanotube; 4, hydrate hydrogen storage layer; 5, flange ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] The conventional high-pressure hydrogen storage bottle is usually made of single-layer metal or composite material, which can meet certain hydrogen storage requirements, but is difficult to cope with changes in external hydrogen storage conditions. For example, under high temperature environment, the internal pressure of the hydrogen storage bottle rises sharply, which can easily cause hydrogen decomposition or material strength reduction. The existing hydrogen storage bottle cannot timely inhibit the decomposition of hydrogen, which will affect the stability and safety of the hydrogen storage system.

[0024] To solve the defects of the above-mentioned hydrogen storage bottle in use, please refer to Figures 1-4The utility model provides a kind of multilayer hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage, can realize efficient thermal management, improve the use efficiency and safety of hydrogen storage bottle.The hydrogen storage bottle is composed of cylindrical bottle body 1 and the cover 2 matched with bottle body 1, bottle body 1 includes that outer shell protective layer 101, temperature control coil layer 102 and pressure-bearing layer 103 are sequentially arranged from outside to inside, the bottom of outer shell protective layer 101 is equipped with air inlet 105, hydrogen gas flows, outer shell protective layer 101 is fixedly connected with pressure-bearing layer 103, outer shell protective layer 101 is welded on the outer wall of pressure-bearing layer 103, and insulation cavity 104 is formed between outer shell protective layer 101 and pressure-bearing layer 103, temperature control coil layer 102 is spirally arranged in insulation cavity 104, insulation cavity 104 is used to isolate external heat, ensure that the internal temperature of bottle body 1 is stably in-20~60 ℃ range, and temperature control coil layer 102 is welded on the outer wall of pressure-bearing layer 103, temperature control coil layer 102 can be in close contact with pressure-bearing layer 103, temperature control coil layer 102 is made of flat copper pipe, the end of copper pipe is connected with external refrigerating machine, cooling medium flows in copper pipe, and the ratio of the width and inner wall thickness of copper pipe is 5:1-10:1, can increase the contact area of copper pipe and internal medium, improve heat exchange efficiency, so that heat is transferred to the inside of bottle body 1 or exported from inside more quickly, ensure that the temperature in hydrogen gas absorption and release process is stably in safe range, the inside of pressure-bearing layer 103 is filled with carbon nanotube 3 for adsorbing hydrogen, hydrate hydrogen storage layer 4 is arranged between carbon nanotube 3 and pressure-bearing layer 103, and hydrate hydrogen storage layer 4 is provided with water-proof gas-permeable membrane for hydrogen gas flow and isolating water and carbon nanotube 3 on the side close to carbon nanotube 3, after hydrogen storage of bottle body 1 is completed, hydrate hydrogen storage layer 4 can be as a layer of wall to wrap the carbon nanotube 3 for adsorbing hydrogen inside, enhances the stability of carbon nanotube 3 to hydrogen adsorption, when hydrogen is decomposed due to storage condition change in storage state, the high-pressure environment under hydrate wall can inhibit the hydrogen adsorbed by carbon nanotube 3 from further decomposing, and the high-pressure environment caused by hydrogen decomposition can react on hydrogen to generate hydrate crystal, enhance the stability of hydrogen hydrate cage structure, water-proof gas-permeable membrane is made of carbon-based adsorption material, its thickness is 0.5-1.5 mm, has abundant pore structure and extremely high specific surface area, can ensure the dynamic response capability of hydrogen storage bottle, the hydrogen storage bottle adopts multilayer concentric circle structure design, and cooperates through carbon nanotube 3 and hydrate hydrogen storage layer 4, not only improves hydrogen storage density, but also enhances the stability of carbon nanotube 3 to adsorbed hydrogen, in storage state, even if hydrogen is decomposed due to external condition change, the high-pressure environment formed by hydrate wall can effectively inhibit the further decomposition of hydrogen, so as to maintain the stability of hydrogen storage bottle, and improve the overall structural strength of hydrogen storage bottle.

[0025] Since the inside of the bottle body 1 is in a high pressure state, the stability of the connection between the bottle body 1 and the cover 2 needs to be ensured, the outer shell protective layer 101 and the outside of the cover 2 are fixedly provided with flange rings 5, the two flange rings 5 are connected through flange bolts, which can provide high-strength mechanical connection for the bottle body 1 and the cover 2, ensure the close combination between the bottle body 1 and the cover 2, and the connection mode can withstand the high pressure (working pressure 16-18 MPa) in the inside of the bottle body 1, ensure the sealing performance of the hydrogen storage bottle in a high pressure environment, and prevent hydrogen leakage.

[0026] In order to further optimize the sealing performance between the bottle body 1 and the cover 2, a first sealing groove 201 is arranged at the bottom of the cover 2, at least two second sealing grooves 202 are arranged on the side wall of the cover 2 and are longitudinally and equidistantly distributed, and a sealing strip matched with the first sealing groove 201 and the second sealing groove 202 is arranged on the inner wall of the outer shell protective layer 101, the sealing strip is made of silica gel or rubber and has a certain elasticity, which can adapt to the slight deformation between the bottle body 1 and the cover 2 and ensure the sealing effect in long-term use, and the multi-stage sealing design can adapt to the high pressure environment in the bottle body 1, effectively disperse the pressure and prevent sealing failure.

[0027] In order to enhance the stability of the overall structure of the bottle body 1, the pressure bearing layer 103 is made of high-strength aluminum alloy material, and the surface of the pressure bearing layer 103 is subjected to oxidation treatment, the outer shell protective layer 101 is made of stainless steel material, and the outer wall of the outer shell protective layer 101 is sprayed with anticorrosive paint, the aluminum alloy and the stainless steel both have high tensile strength and pressure resistance, can withstand the high pressure in the inside of the bottle body 1, and ensure the structural stability and safety of the hydrogen storage bottle.

[0028] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article, or equipment.

[0029] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-layer hydrogen storage cylinder based on carbon adsorption and hydrate hydrogen storage, characterized in that: The application relates to a cylindrical bottle body (1) and a cover (2) matched with the bottle body (1), wherein the bottle body (1) comprises, from outside to inside, an outer shell protection layer (101), a temperature control coil layer (102) and a pressure bearing layer (103); the outer shell protection layer (101) is fixedly connected with the pressure bearing layer (103), and a heat preservation cavity (104) is formed between the outer shell protection layer (101) and the pressure bearing layer (103); the temperature control coil layer (102) is arranged in the heat preservation cavity (104) in a spiral shape, and the temperature control coil layer (102) is welded to the outer wall of the pressure bearing layer (103). The pressure bearing layer (103) is filled with carbon nanotubes (3) for adsorbing hydrogen; a hydrate hydrogen storage layer (4) is arranged between the carbon nanotubes (3) and the pressure bearing layer (103), and a water-proof and gas-permeable film is arranged on the side of the hydrate hydrogen storage layer (4) close to the carbon nanotubes (3) and used for allowing hydrogen to flow and isolating water and the carbon nanotubes (3).

2. The multi-layer hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage according to claim 1, characterized in that: Flange rings (5) are fixedly arranged on the outer surfaces of the outer shell protection layer (101) and the cover (2), and the two flange rings (5) are connected through flange bolts.

3. The multi-layered hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage of claim 1, wherein: A first sealing groove (201) is arranged on the bottom of the cover (2), and at least two second sealing grooves (202) are arranged on the side wall of the cover (2) and are longitudinally and equidistantly distributed; sealing strips matched with the first sealing groove (201) and the second sealing grooves (202) are arranged on the inner wall of the outer shell protection layer (101).

4. The multi-layered hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage of claim 1, wherein: The temperature control coil layer (102) is made of flat copper pipes, and the ratio of the width to the inner wall thickness of the copper pipes is 5:1-10:

1.

5. The multi-layered hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage of claim 1, wherein: The pressure bearing layer (103) is made of high-strength aluminum alloy material, and the surface of the pressure bearing layer (103) is subjected to oxidation treatment.

6. The multi-layered hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage of claim 1, wherein: The water-proof and gas-permeable film is made of carbon-based adsorption material, and the thickness of the water-proof and gas-permeable film is 0.5-1.5 mm.

7. The multi-layered hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage of claim 1, wherein: The outer shell protection layer (101) is made of stainless steel material, and the outer wall of the outer shell protection layer (101) is sprayed with anticorrosive paint.

8. The multi-layered hydrogen storage bottle based on carbon adsorption and hydrate hydrogen storage of claim 1, wherein: An air inlet (105) is arranged on the bottom of the outer shell protection layer (101).

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