Green hydrogen high-density storage container and manufacturing method thereof

Abstract

The application discloses a green hydrogen high-density storage container and a manufacturing method thereof, and belongs to the technical field of clean energy storage. The green hydrogen high-density storage container comprises a container body and a rotatable cover plate. A transition layer and an inner layer coating are sequentially arranged on the inner wall of the container body, a pressure relief valve is arranged at the top of the container body, and an air inlet valve and an air outlet valve are arranged at the bottom of the container body. The rotatable cover plate is rotationally connected with the container body, and the air inlet valve and the air outlet valve are shielded or exposed by rotating the rotatable cover plate. The green hydrogen high-density storage container disclosed by the application solves the problem of large-scale hydrogen storage by arranging a hydrogen embrittlement resistant inner layer coating in the container. After the hydrogen embrittlement resistant inner layer coating is arranged, the preparation cost of the container is greatly saved, the equipment is convenient to install, has good sealing performance, is compact in structure, is easy to spray and maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clean energy storage, in particular to a green hydrogen high-density storage container and a manufacturing method thereof. BACKGROUND

[0002] Large-scale development of renewable energy represented by solar energy and wind energy is used to gradually replace traditional fossil energy. However, the discontinuous power generated by the discontinuous renewable energy is difficult to match with the power grid, so that the renewable energy cannot be directly used by human society. Converting renewable energy into electricity (green electricity), and then driving water electrolysis to produce hydrogen (green hydrogen), and then converting green hydrogen into various hydrogen-containing liquid fuels (green ammonia, green methanol) which are easy to liquefy, easy to store and safe and controllable, and finally providing the required stable energy for human society by hydrogen-containing liquid fuels, is one of the feasible ways to break through the bottleneck of large-scale application of renewable energy worldwide.

[0003] Before green hydrogen is converted into hydrogen-containing liquid fuel, it needs to be stored in large quantities and concentrated to meet the raw material hydrogen supply demand of the liquid fuel synthesis process under the condition that there is no renewable energy.

[0004] At present, high-pressure hydrogen storage mainly includes two categories of all-metal gas cylinders and inner liner + fiber winding gas cylinders. The all-metal gas cylinder is easy to be corroded by hydrogen and fail, and it is difficult to carry out safety monitoring on the container. The volume hydrogen storage density is 14.28-40g / L, and it is commonly used for fixed storage of a small amount of hydrogen. The inner liner + fiber winding gas cylinder is wound with composite fibers, which greatly reduces the weight, but the manufacturing cost is high. In order to avoid the hydrogen embrittlement and hydrogen corrosion damage of the storage container by high-pressure hydrogen, and to save the preparation cost of the hydrogen storage container, large-scale and concentrated storage of hydrogen is usually carried out under low pressure. However, in large-scale storage applications, low-pressure storage has many problems such as large number of containers, large occupied area and difficult management, which leads to high cost of hydrogen storage. SUMMARY

[0005] The present application discloses a green hydrogen high-density storage container and a manufacturing method thereof to improve the above problems.

[0006] The technical scheme adopted by the present application to solve the above technical problems is:

[0007] Based on the above purpose, the present application discloses a green hydrogen high-density storage container, comprising:

[0008] A container body, a transition layer and an inner layer coating are sequentially arranged on the inner wall of the container body, the coating layer, the container body and the transition layer can form a high-strength composite material after being combined, a pressure relief valve is arranged at the top of the container body, and an air inlet valve and an air outlet valve are arranged at the bottom of the container body.

[0009] A rotatable cover plate is installed at the bottom of the container body and is rotationally connected with the container body, and the rotatable cover plate is rotated to shield or expose the air inlet valve and the air outlet valve.

[0010] Optionally, a base is further included, and the rotatable cover plate is installed on the base.

[0011] Optionally, the base includes a support table and a plurality of support frames, the support table has a cross section in the shape of a "U", the rotatable cover plate is installed on the support table, and the plurality of support frames are arranged at intervals along the circumference of the support table.

[0012] Optionally, the top of the container body is provided with an air outlet nozzle, the bottom of the container body is provided with a bottom hole, an air inlet hole and an air outlet hole, the pressure relief valve is installed on the air outlet nozzle, the air inlet valve is installed on the air inlet hole, the air outlet valve is installed on the air outlet hole, and the rotatable cover plate is rotationally matched with the bottom hole.

[0013] In order to achieve the above purpose, the application further discloses a manufacturing method of the green hydrogen high-density storage container.

[0014] Step one: process the middle cylinder, the top plate and the bottom plate respectively, reserve an air outlet nozzle on the top plate, and install a pressure relief valve at the air outlet nozzle;

[0015] Step two: use a laser drilling method to drill a bottom hole, an air inlet hole and an air outlet hole on the bottom plate, and arrange rubber sealing rings at the bottom hole, the air inlet hole and the air outlet hole respectively;

[0016] Step three: weld the top plate and the bottom plate to the two ends of the middle cylinder respectively to form a container body;

[0017] Step four: spray a transition layer on the inner wall of the container body, and then spray an inner layer coating; and

[0018] Step five: install an air inlet valve at the air inlet hole, install an air outlet valve at the air outlet hole, install a rotatable cover plate at the bottom hole, and rotate the rotatable cover plate to shield or expose the air inlet hole and the air outlet hole.

[0019] Optionally, in the step four, the inner layer coating is prepared by using a cold spraying process, and the inner layer coating, the container body and the transition layer are combined into a high-strength composite material by a cold gas dynamic spraying method.

[0020] Optionally, the diameter of the powder particles is between 1-100 microns during the cold gas dynamic spraying.

[0021] Optionally, the cold gas dynamic spraying gun rotates at a constant speed in the circumferential direction and moves at a constant speed along the axial direction of the middle cylinder;

[0022] The cold gas dynamic spraying gun rotates at a constant speed in the circumferential direction at the top plate and the bottom plate and moves at a variable speed on the guide rail, and the variable speed is related to the instantaneous diameter of spraying at the top plate and the bottom plate.

[0023] Optionally, the thickness of the inner layer coating is 10-2000 μm, the spraying gas is helium, nitrogen or a mixture of helium and nitrogen, the spraying pressure is 2-10 MPa, the spraying temperature is 100-2000 ℃, the spraying distance is 10-50 mm, the relative movement speed of the spraying gun is 1 mm / s-10 m / s, and the rotation speed of the container is 1-50 r / min.

[0024] Optionally, the transition layer uses the same preparation technology as the inner layer coating and serves as a transition material between the inner layer coating and the container body, which can form high-strength bonding with the container body and the inner layer coating respectively, realize high-strength preparation of the overall composite material, and complete the stress relief annealing and natural aging heat treatment process after the cold spraying process.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] The green hydrogen high-density storage container disclosed by the present application solves the problem of large-scale hydrogen storage by arranging a hydrogen embrittlement resistant inner layer coating inside, which greatly saves the preparation cost of the container, and the equipment is easy to install, has good sealing performance, compact structure, easy to spray and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A schematic view of the green hydrogen high-density storage container disclosed by the embodiment of the present application is shown;

[0028] Figure 2 A schematic view of the container body disclosed by the embodiment of the present application is shown;

[0029] Figure 3 A top view of the container body disclosed by the embodiment of the present application is shown;

[0030] Figure 4 A schematic view of the base disclosed by the embodiment of the present application is shown;

[0031] Figure 5 A flow chart of the manufacturing method of the green hydrogen high-density storage container disclosed by the embodiment of the present application is shown;

[0032] Figure 6 A front view of the method for large-scale storage of green hydrogen disclosed by the embodiment of the present application is shown;

[0033] Figure 7 A top view of the method for large-scale storage of green hydrogen disclosed by the embodiment of the application is shown.

[0034] In the figure:

[0035] 10 - green hydrogen high-density storage container, 100 - container body, 110 - top plate, 111 - gas outlet nozzle, 120 - middle cylinder, 130 - bottom plate, 131 - gas inlet hole, 132 - gas outlet hole, 133 - bottom hole, 140 - transition layer, 150 - inner layer coating, 160 - pressure relief valve, 170 - gas inlet valve, 180 - exhaust valve, 200 - base, 210 - support table, 220 - support frame, 300 - rotatable cover plate, 400 - temperature instrument, 500 - flow instrument, 20 - three-dimensional hydrogen storage frame. DETAILED DESCRIPTION

[0036] The application will be further described in detail below with specific examples and in conjunction with the drawings.

[0037] Embodiment:

[0038] Referring to Figures 1 to 4 , the embodiment of the application discloses a green hydrogen high-density storage container 10, which comprises a container body 100 and a rotatable cover plate 300. A transition layer 140 and an inner layer coating 150 are sequentially arranged on the inner wall of the container body 100, a pressure relief valve 160 is arranged at the top of the container body 100, and a gas inlet valve 170 and an exhaust valve 180 are arranged at the bottom of the container body 100. The rotatable cover plate 300 is rotationally connected with the container body 100, and the rotatable cover plate 300 is rotated to shield or expose the gas inlet valve 170 and the exhaust valve 180.

[0039] The green hydrogen high-density storage container 10 disclosed in the embodiment solves the problem of large-scale hydrogen storage by arranging a hydrogen embrittlement resistant inner layer coating 150 inside, and after arranging the hydrogen embrittlement resistant inner layer coating 150, the preparation cost of the container is greatly saved, and the equipment is convenient to install, has good sealing performance, compact structure, is easy to spray and maintain.

[0040] Referring to Figures 1 to 3 , the container body 100 comprises a middle cylinder 120, a top plate 110 and a bottom plate 130, and the top plate 110 and the bottom plate 130 are respectively welded at two ends of the middle cylinder 120. The middle cylinder 120 is in a cylindrical shape, and in an embodiment of the embodiment, the diameter of the middle cylinder 120 is about 1-3 m, the height is about 4-20 m, and the shell thickness is about 5-100 mm.

[0041] The transition layer 140 and the inner layer coating 150 are arranged on the inner wall of the container body 100 by cold spraying technology, i.e. the transition layer 140 and the inner layer coating 150 are arranged on the inner wall of the middle cylinder 120, the inner wall of the top plate 110, the inner wall of the bottom plate 130 and the welding seam. The inner layer coating 150, the container body 100 and the transition layer 140 are combined to form a high-strength composite material, so as to realize high-strength preparation of the whole composite material.

[0042] The transition layer 140 is a combination of one or more of Ni, Cr, Ti, Fe, W, nickel-aluminum alloy and nickel-chromium alloy. The inner layer coating is a combination of one or more of Al, Cu, Al-Mg-Si system, Al-Cu and Al-Mg-Zn system. The characteristics of small aluminum face-centered cubic lattice gap and dense oxide film are mainly utilized, so that the inner layer coating 150, the container body 100 and the transition layer 140 can form a high-strength composite material after being combined.

[0043] The gas outlet nozzle 111 is arranged on the top plate 110, and the pressure relief valve 160 is installed at the gas outlet nozzle 111. The bottom hole 133, the air inlet hole 131 and the air outlet hole 132 are arranged on the bottom plate 130, and the rubber sealing ring is arranged at the bottom hole 133, the air inlet hole 131 and the air outlet hole 132 of the bottom plate 130. The air inlet valve 170 is installed at the air inlet hole 131, and the exhaust valve 180 is installed at the air outlet hole 132.

[0044] The bottom hole 133 is arranged to facilitate spraying the whole cylinder wall after welding is completed, and if the coating is found to fall off during use, the coating can be resprayed in time.

[0045] The rotatable cover plate 300 is installed at the bottom hole 133, and the rotatable cover plate 300 is rotationally connected with the bottom plate 130. The rotatable cover plate 300 is rotated to shield or expose the air inlet valve 170 and the exhaust valve 180.

[0046] Referring to Figure 1 and Figure 4 In the embodiment, the green hydrogen high-density storage container 10 can also be provided with a base 200, and the base 200 is mainly used for supporting the whole container.

[0047] The base 200 comprises a support table 210 and a plurality of support frames 220; the longitudinal section of the support table 210 is in the shape of a "U", the rotatable cover plate 300 is installed on the support table 210, and the bottom of the container body 100 is provided with rubber which is in close contact with the support table 210. The plurality of support frames 220 are arranged at intervals along the circumference of the support table 210. In an embodiment of the present embodiment, four support frames 220 as described above can be arranged, the included angle between the support frame 220 and the support table 210 is 45 degrees, and the four support frames 220 are uniformly arranged along the circumference of the support table 210, that is, one support frame 220 is arranged every 90 degrees along the circumference of the support table 210. Of course, arranging four support frames 220 is only an embodiment in the present embodiment, and it is also possible to arrange three or more support frames 220 in other embodiments.

[0048] A micro pulley can also be arranged on the lower side of the periphery of the base 200 and connected to an electric device, and part of the lower part of the container shell of the micro pulley is embedded in the base 200.

[0049] Referring to Figure 5 The present embodiment also discloses a manufacturing method of the green hydrogen high-density storage container 10, which comprises the following steps:

[0050] Step one: the middle cylinder 120, the top plate 110 and the bottom plate 130 are respectively processed, a shorter gas outlet 111 is reserved on the top plate 110, and a pressure relief valve 160 is installed at the gas outlet 111. The middle cylinder 120, the top plate 110 and the bottom plate 130 can all be made of iron-based alloy, and mainly austenitic stainless steel. The middle cylinder 120, the top plate 110 and the bottom plate 130 can all be manufactured by one-piece forming, and the blank is manufactured by a low-pressure casting method, then a stress relief annealing heat treatment process is carried out, and finally the blank is polished and polished.

[0051] Step two: the bottom hole 133, the gas inlet hole 131 and the gas outlet hole 132 are opened on the bottom plate 130 by laser drilling. Rubber sealing rings are arranged at the bottom hole 133, the gas inlet hole 131 and the gas outlet hole 132, respectively, and threads are tapped on the rubber sealing rings.

[0052] Step three: the top plate 110 and the bottom plate 130 are respectively welded to the two ends of the middle cylinder 120 to form the container body 100;

[0053] Step four: a cold gas power spray gun is inserted into the inside of the container body 100 from the bottom hole 133, and the transition layer 140 and the inner layer coating 150 are sprayed. First, the transition layer 140 is sprayed on the inner wall of the container body 100, and then the inner layer coating 150 is sprayed on the surface of the transition layer 140.

[0054] The spraying of the transition layer 140 and the inner layer coating 150 is performed by using the cold gas dynamic spraying technology. The principle of the cold gas dynamic spraying technology is as follows: first, the transition layer 140 coating powder entrapped in the high-temperature and high-pressure gas obtains high kinetic energy under the acceleration, and then the high-speed transition layer 140 coating powder impacts the inner wall of the container body 100 at a temperature lower than the melting point of the transition layer 140 coating powder, at which time the transition layer 140 coating powder is strongly plastically deformed at the inner wall of the container body 100 and forms the transition layer 140 with the inner wall of the container body 100 by mechanical interlocking; then, the inner layer coating 150 coating powder entrapped in the high-temperature and high-pressure gas obtains high kinetic energy under the acceleration, and then the high-speed coating powder targets the transition layer 140 for forging, and the transition layer 140 coating powder, the inner layer coating 150 coating powder and the inner wall of the container body 100 are combined into a high-strength composite material by mechanical interlocking, which can increase the bonding strength of the coating and also reduce the porosity of the coating.

[0055] In the present embodiment, the morphology and diameter of the transition layer 140 coating powder and the inner layer coating 150 coating powder are controlled when the cold gas dynamic spraying is performed, and spherical or polyhedral powder particles are used as much as possible. The diameter of the transition layer 140 coating powder and the inner layer coating 150 coating powder is limited to 1-100 μm. In this way, the powder particles can avoid insufficient acceleration due to too large diameter, and the powder particles can avoid adhering to the barrel of the cold spraying gun due to too small diameter, thereby ensuring the spraying effect.

[0056] In some embodiments of the present embodiment, the diameter of the transition layer 140 coating powder and the inner layer coating 150 coating powder can be 10-60 μm, which is better for the spraying effect.

[0057] The transition layer 140 is one or a combination of multiple materials selected from Ni, Cr, Ti, Fe, W, nickel-aluminum alloy and nickel-chromium alloy. The inner layer coating is one or a combination of multiple materials selected from Al, Cu, Al-Mg-Si series, Al-Cu and Al-Mg-Zn series. The small interstitial space of the aluminum face-centered cubic lattice and the dense oxide film are mainly used to form a high-strength composite material after the inner layer coating 150, the container body 100 and the transition layer 140 are combined.

[0058] The inner layer coating 150 and the transition layer 140 are prepared by a spray forming process, and the inner layer coating 150, the container body 100 and the transition layer 140 are combined into a high-strength composite material by a cold gas dynamic spraying method. The thickness of the inner layer coating 150 at the middle cylinder 120 is 10-2000 μm, the spraying gas is helium, nitrogen or a mixture of helium and nitrogen, the spraying pressure is 2-10 MPa, the spraying temperature is 100-2000 °C, the spraying distance is 10-50 mm, the relative speed of the spraying gun is 1 mm / s-10 m / s, the rotation speed of the container is 1-50 r / min, and the same parameters as the cylinder are used for the inner layer coating 150 at the top plate 110 and the bottom plate 130 as far as possible, and the welds are sprayed. Within this range, the sprayed coating is denser and more uniform, has high bonding strength with the transition layer, is not easy to fall off and has a long service life, while the economy of equipment manufacturing is also considered. However, the selection of the spraying method will not lead to the situations such as poor coating density and air tightness, shortened service life or more easily peeled coating.

[0059] The cold gas dynamic spraying gun rotates uniformly in the circumferential direction and moves uniformly in the axial direction at the middle cylinder 120. The cold gas dynamic spraying gun rotates uniformly in the circumferential direction and moves at a variable speed on the guide rail at the top plate 110 and the bottom plate 130, and the variable speed is related to the diameter of the spraying moment at the top plate 110 and the bottom plate 130. If the container is spherical, uniform spraying can be achieved by uniform axial movement and variable movement of the cold gas dynamic spraying gun on the guide rail.

[0060] After spraying is completed, a heat treatment process of stress relief annealing and natural aging is performed, mainly to reduce the local stress in the composite material and promote the formation of a dense aluminum oxide film.

[0061] Step five: install the air inlet valve 170 at the air inlet hole 131, install the air outlet valve 180 at the air outlet hole 132, and temperature instrument 400 and flow instrument 500 can be additionally provided at the positions of the air inlet valve 170 and the air outlet valve 180. Install the rotatable cover plate 300 at the bottom hole 133, rotate the rotatable cover plate 300 to block or expose the air inlet hole 131 and the air outlet hole 132; then the air tightness test can be performed by tightening all the valve switches.

[0062] The manufacturing method of the green hydrogen high-density storage container 10 disclosed in the embodiment solves the problem of large-scale hydrogen storage by arranging a hydrogen embrittlement resistant inner layer coating 150 inside, and an ultrathin coating is prepared on the inner wall of the container body 100 by means of cold gas dynamic spraying technology. This post-processing method of hydrogen embrittlement resistant coating greatly saves the preparation cost of the container body 100, and also realizes diversified production of the base shell, including integrated casting, etc., which can realize high-strength preparation of the base shell; and the container body 100 has the advantages of convenient installation, good sealing, compact structure, easy spraying and maintenance. The reserved bottom hole 133 is used for spraying the entire cylinder wall after welding is completed, and if coating peeling is found during use, it can also be re-sprayed in time.

[0063] Referring to Figure 6 and Figure 7 , the embodiment of the application discloses a method for large-scale storage of green hydrogen, which connects a plurality of the above-mentioned green hydrogen high-density storage containers 10 together to store more hydrogen. In the embodiment, the green hydrogen high-density storage container 10 has mainly two implementation ways, one is a spherical tank and the other is a large length vertical pipe. A plurality of spherical tanks are integrated into a spherical tank group and arranged on a three-dimensional hydrogen storage frame 20 to form a three-dimensional spherical tank group high-pressure hydrogen storage unit. Similarly, the vertical pipes can also be integrated into a three-dimensional vertical pipe group high-pressure hydrogen storage unit.

[0064] In the application of synthetic ammonia, low-pressure hydrogen and nitrogen produced by renewable energy are compressed into high-pressure hydrogen and nitrogen (5-100 MPa), and then mixed with high-pressure nitrogen and hydrogen and introduced into the above-mentioned container for storage. A plurality of green hydrogen high-density storage containers 10 arranged on the hydrogen storage frame can store more and higher density hydrogen, and this green hydrogen high-density storage container 10 solves the problem of large-scale hydrogen storage by arranging a hydrogen embrittlement resistant inner layer coating 150 inside, which greatly saves the preparation cost of the container after arranging this hydrogen embrittlement resistant inner layer coating 150, and the equipment is easy to install, has good sealing, compact structure, easy to spray and maintain.

[0065] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A green hydrogen high-density storage container, characterized by, The container body is provided with a transition layer and an inner layer coating on the inner wall of the container body in sequence, the inner layer coating, the container body and the transition layer can form a high-strength composite material after being combined, the top of the container body is provided with a pressure relief valve, the bottom of the container body is provided with an air inlet valve and an air outlet valve; the transition layer is a combination of one or more of Ni, Ti, W, nickel-aluminum alloy and nickel-chromium alloy materials; the inner layer coating is a combination of one or more of Al, Cu, Al-Mg-Si system, Al-Cu and Al-Mg-Zn system materials; A rotatable cover plate is installed at the bottom of the container body and is rotationally connected with the container body, and the rotatable cover plate is rotated to shield or expose the air inlet valve and the air outlet valve; A bottom hole is provided on the bottom plate of the container body; a rotatable cover plate is installed at the bottom hole and is rotationally connected with the bottom plate; the bottom hole can be used to spray the entire cylinder wall after welding is completed, and the bottom hole can also be used to spray during use. A base is also provided, the base includes a support table and a plurality of support frames, the support table has a "U" shaped cross section, the rotatable cover plate is installed on the support table, and the plurality of support frames are arranged at intervals along the circumference of the support table.

2. The green hydrogen high-density storage container of claim 1, wherein, The top of the container body is provided with an air outlet nozzle, the bottom of the container body is provided with an air inlet hole and an air outlet hole; the pressure relief valve is installed on the air outlet nozzle, the air inlet valve is installed on the air inlet hole, and the air outlet valve is installed on the air outlet hole.

3. The green hydrogen high-density storage container of claim 1, wherein, The method comprises the following steps:

4. A method of manufacturing the green hydrogen high-density storage container according to any one of claims 1 to 3, characterized by, Step one: process the middle cylinder, the top plate and the bottom plate respectively, and reserve an air outlet nozzle on the top plate, and install a pressure relief valve at the air outlet nozzle; Step two: use laser drilling to drill a bottom hole, an air inlet hole and an air outlet hole on the bottom plate, and install rubber sealing rings at the bottom hole, the air inlet hole and the air outlet hole respectively; Step three: weld the top plate and the bottom plate to the two ends of the middle cylinder respectively to form a container body; Step four: spray a transition layer on the inner wall of the container body, and then spray an inner layer coating; And Step five: install an air inlet valve at the air inlet hole, install an air outlet valve at the air outlet hole, and install a rotatable cover plate at the bottom hole, and rotate the rotatable cover plate to shield or expose the air inlet hole and the air outlet hole. In step four, the inner layer coating is prepared by cold spraying process, and the inner layer coating, the container body and the transition layer are combined into a high-strength composite material by cold gas dynamic spraying method.

5. The method of manufacturing a green hydrogen high-density storage container according to claim 4, wherein, When cold gas dynamic spraying is performed, the diameter of the powder particles is between 1-100 μm.

6. The method of manufacturing a green hydrogen high-density storage container according to claim 5, wherein, The cold gas dynamic spraying gun rotates at a constant speed along the circumference of the middle cylinder and moves at a constant speed along the axial direction of the middle cylinder; the cold gas dynamic spraying gun rotates at a constant speed along the circumference of the top plate and the bottom plate and moves at a variable speed on a guide rail, and the variable speed is related to the instantaneous diameter of the spraying at the top plate and the bottom plate.

7. The method of manufacturing a green hydrogen high-density storage container according to claim 5, wherein, ​ 8. The method of manufacturing a green hydrogen high-density storage container according to claim 5, wherein, The thickness of the inner layer coating is 10-2000 μm, the spraying gas is helium, nitrogen, or a mixture of helium and nitrogen, the spraying pressure is 2-10 MPa, the spraying temperature is 100-2000 ℃, the spraying distance is 10-50 mm, and the container rotation speed is 1-50 r / min.

9. The method of manufacturing a green hydrogen high-density storage container according to claim 5, wherein, The transition layer is prepared by the same preparation technology as the inner layer coating, and is a transition material between the inner layer coating and the container body, and can form high-strength bonding with the container body and the inner layer coating respectively, realize high-strength preparation of the whole composite material, and complete the heat treatment process of stress relief annealing and natural aging after the cold spraying process.

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