Solid-gas coupling hydrogen storage tank and aggregate thereof

Abstract

The utility model relates to the technical field of hydrogen storage, and discloses a solid-gas coupling hydrogen storage tank and an aggregate thereof, the solid-gas coupling hydrogen storage tank comprises a tank body, the top of the tank body is provided with a first tank top, and the bottom of the tank body is provided with a second tank top; the first heating assembly is arranged in the first tank top; the filtering assembly is located below the first heating assembly, is arranged in the tank body and is used for preventing leakage of the hydrogen storage material powder; the second heating assembly is arranged in the tank body, is positioned below the filtering assembly and is used for heating the hydrogen storage material; and the cooling assembly is arranged in the tank body, located on the outer side of the second heating assembly and used for absorbing hydrogen storage reaction heat. By optimizing the internal structure of the tank body, the hydrogen desorption rate is improved when hydrogen is released, and the absorption capacity of reaction heat is enhanced in the hydrogen storage process, so that the system temperature is effectively regulated and controlled, and the overall hydrogen storage performance of the hydrogen storage material is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen storage technical field more specifically, especially, it is a kind of solid-gas coupling hydrogen storage tank and its collection, and is not particularly related to. BACKGROUND

[0002] Solid-gas coupling hydrogen storage is the research hotspot in current hydrogen energy storage and transportation field by integrating the safety of solid-state hydrogen storage material (such as metal hydride, coordination hydride) and the rapid response capability of high-pressure gaseous hydrogen storage. The technology realizes low-pressure hydrogen storage at room temperature through solid-state material adsorption, and simultaneously realizes rapid charging and discharging using gaseous space, which can theoretically balance the volume hydrogen storage density (3-5 times higher than traditional high-pressure gaseous hydrogen storage) and dynamic response efficiency.

[0003] The existing solid-gas coupling hydrogen storage tank generally adopts a single-stage heating structure, which causes the hydrogen preheating at the upper part of the tank body and the heating of the hydrogen storage material at the lower part to be out of sync, and the temperature difference during hydrogen release can reach more than 10°C, which seriously affects the desorption kinetics performance. The cooling system mostly adopts a simple coil structure, such as the cooling device in the gas-solid composite hydrogen storage tank disclosed in CN108730751A, which lacks a high-efficiency heat conduction medium, and the reaction heat cannot be promptly discharged during hydrogen storage, resulting in a decrease of about 15% in the material adsorption capacity. Moreover, the solid-state hydrogen storage material is mostly micron-level powder, and the existing filter device only adopts a single-layer screen, such as the filter device involved in the distributed energy supply system based on solid-gas coupling hydrogen storage and its working method disclosed in CN119196531A, which cannot effectively intercept particles below 0.5 μm, and does not solve the problem of powder backflow caused by reverse airflow during hydrogen release. Certain test data show that the powder leakage rate of the traditional single-stage filtration hydrogen storage tank can reach 3.2% after 100 charging and discharging cycles, which not only pollutes the gas passage, but also may cause tank blockage.

[0004] Therefore, there is a need for a solid-gas coupling hydrogen storage tank to solve the problems of low heat management efficiency and high powder leakage risk in the prior art. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a solid-gas coupling hydrogen storage tank and its collection to solve the problems existing in the prior art, optimize the internal structure of the tank body, improve the hydrogen release rate when releasing hydrogen, and enhance the absorption capacity of reaction heat during hydrogen storage, so as to effectively control the system temperature and improve the overall hydrogen storage performance of the hydrogen storage material.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a solid-gas coupled hydrogen storage tank, comprising: a tank body, with a first tank top at the top and a second tank top at the bottom; a first heating assembly disposed inside the first tank top; a filter assembly located below the first heating assembly and inside the tank body to prevent leakage of hydrogen storage material powder, the filter assembly comprising a filter sheet, a filter screen, and an activated carbon sponge, wherein the filter sheet is disposed inside an inlet pipe, the activated carbon sponge is disposed around the inlet pipe, and the filter screen is disposed on top of the activated carbon sponge; a second heating assembly disposed inside the tank body, below the filter assembly, for heating the hydrogen storage material; and a cooling assembly disposed inside the tank body, outside the second heating assembly, for absorbing the heat of hydrogen storage reaction.

[0007] According to the present invention, a solid-gas coupled hydrogen storage tank is provided, wherein the first heating component includes a shell and a heating wire, the shell has a hollow structure inside, the shell is fixedly connected to the inside of the top of the first tank, the heating wire is spirally distributed inside the shell, and the gas inlet pipe passes through the shell.

[0008] According to the present invention, a solid-gas coupled hydrogen storage tank is provided, wherein the filter assembly further includes a shell, the inner end of which is fixedly connected to the outside of the activated carbon sponge, and the outer end of which is fixedly connected to the inner wall of the tank.

[0009] According to the present invention, a solid-gas coupled hydrogen storage tank is provided, wherein the second heating component includes a heating rod, the heating rod is fixedly connected to the top of the second tank, the heating rod is located below the activated carbon sponge, and the heating rod is located inside the tank body.

[0010] According to the present invention, a solid-gas coupled hydrogen storage tank is provided, wherein the cooling assembly includes a water pipe and several heat-conducting plates, the several heat-conducting plates are sleeved on the outside of the heating rod, and the water pipe is a serpentine pipe that passes through the several heat-conducting plates in sequence.

[0011] According to the present invention, a solid-gas coupled hydrogen storage tank is provided, wherein the heat-conducting plate is provided with circular fins, and hydrogen storage material is stored between the circular fins.

[0012] According to the present invention, a solid-gas coupled hydrogen storage tank is provided on the top of the first tank, an air inlet is provided, an air inlet pipe is connected to the air inlet, and a water inlet and a water outlet are also provided, which are respectively connected to the water inlet end and the water outlet end of the water pipe.

[0013] According to the present invention, a solid-gas coupled hydrogen storage tank assembly includes several tanks and a telescopic assembly. The telescopic assembly includes a telescopic platform and a telescopic manipulator. The telescopic manipulator is connected to the telescopic platform, the telescopic platform is connected to a base, and the other end of the telescopic manipulator is connected to the top of the second tank.

[0014] According to the present invention, a solid-gas coupled hydrogen storage tank assembly is provided, wherein a base is provided with a plurality of grooves, and a plurality of tank bodies are fixedly connected in the grooves.

[0015] According to the present invention, a solid-gas coupled hydrogen storage tank assembly is provided, wherein a water tank is also provided on the base, and the water outlet and water inlet of the water tank are respectively connected to the water inlet and water outlet on the top of the first tank through pipes.

[0016] The present invention discloses the following technical effects:

[0017] This invention includes a first heating component located at the top of the first tank, providing a specific temperature atmosphere at the top of the tank. A second heating component then heats the hydrogen storage material, improving hydrogen release efficiency. Below the first heating component is a filter component with three layers of filtration. The first layer, activated carbon sponge, is arranged around the inlet pipe to effectively prevent backflow of the powder medium during hydrogen release, thus preventing leakage of the hydrogen storage material. The second layer is a filter screen placed between the inlet pipe and the shell, above the activated carbon filter sponge, effectively preventing transfer of the powder medium. The third layer is a filter sheet placed inside the inlet pipe to efficiently prevent leakage of minute powder particles. A cooling component is also included. When hydrogen storage is required, the cooling component can promptly absorb and remove the heat released during the hydrogen storage reaction and the heat inside the tank, ensuring temperature uniformity. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the first heating component and the filter component in this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the first heating component and the filter component in this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the first heating component in this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the second heating component in this utility model;

[0025] Figure 7 This is a schematic diagram of the tank structure in this utility model;

[0026] Figure 8 This is a structural schematic diagram of the tank body from another angle in this utility model;

[0027] Figure 9 This is a schematic diagram of the structure of the first tank top in this utility model;

[0028] Figure 10 This is a schematic diagram of the heat-conducting plate in this utility model;

[0029] Figure 11 This is a schematic diagram of the structure of the hydrogen storage tank assembly in this utility model;

[0030] The components include: 1. First heating component; 11. Outer shell; 12. Heating wire; 2. Second heating component; 21. Heating rod; 3. Cooling component; 31. Water pipe; 32. Heat-conducting plate; 4. Filter component; 41. Activated carbon sponge; 42. Shell; 43. Filter sheet; 44. Filter screen; 5. Telescopic component; 51. Telescopic platform; 52. Telescopic manipulator; 6. Base; 7. Water tank; 8. Tank body; 9. First tank top; 10. Second tank top; 13. Air inlet pipe. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1-11As shown, this utility model provides a solid-gas coupled hydrogen storage tank, including: a tank body 8, with a first tank top 9 at the top and a second tank top 10 at the bottom; a first heating component 1, disposed inside the first tank top 9; a filter component 4, located below the first heating component 1 and inside the tank body 8, for preventing leakage of hydrogen storage material powder, the filter component 4 including a filter sheet 43, a filter screen 44, and an activated carbon sponge 41, wherein the filter sheet 43 is disposed inside the air inlet pipe 13, the activated carbon sponge 41 is disposed around the air inlet pipe 13, and the filter screen 44 is disposed on top of the activated carbon sponge 41; a second heating component 2, disposed inside the tank body 8 and below the filter component 4, for heating the hydrogen storage material; and a cooling component 3, disposed inside the tank body 8 and outside the second heating component 2, for absorbing the heat of hydrogen storage reaction.

[0034] The tank body 8 has a cylindrical structure and is hollow inside. The top of the tank body 8 is fixedly connected to the first tank top 9 by bolts, and the bottom of the tank body 8 is fixedly connected to the second tank top 10 by bolts. The first tank top 9 has an air inlet, a water inlet and a water outlet.

[0035] The first heating component 1 includes a housing 11 and a heating wire 12. The housing 11 is a hollow cylindrical structure. The heating wire 12 is spirally distributed in a spring shape on the inner wall of the housing 11. The housing 11 is fixedly connected to the top of the first tank 9. An air inlet pipe 13 is provided through the inside of the housing 11. The heating wire 12 surrounds the outside of the air inlet pipe 13 and can heat the hydrogen gas in the air inlet pipe 13.

[0036] The filter assembly 4 is fixedly connected to the lower part of the outer shell 11 and is set inside the tank 8. It includes a filter plate 43, a filter screen 44, an activated carbon sponge 41, and a shell 42. The shell 42 has a circular structure and is fixedly connected to the inner wall of the tank 8 on its outer side. The filter plate 43 has a circular structure and is fixedly installed on the inner wall of the air inlet pipe 13. The filter plate 43 has filter channels and the filtration accuracy of the filter plate 43 does not exceed 0.5μm. The activated carbon sponge 41 has a cylindrical structure and is sleeved on the outer side of the air inlet pipe 13. The activated carbon sponge 41 is located at the center of the shell 42. A protective shell is set on the outer side of the activated carbon sponge 41 and the activated carbon sponge 41 is fixedly connected to the center of the shell 42 through the protective shell. The filter screen 44 is set above the activated carbon sponge 41.

[0037] The second heating component 2 is located below the shell 42. The second heating component 2 includes a heating rod 21, which is welded to the top of the second tank 10. The heating rod 21 is located inside the tank body 8 and has a cylindrical structure. It is used to heat the hydrogen storage material inside the tank body 8.

[0038] The cooling assembly 3 is located around the heating rod 21 and inside the tank 8. The cooling assembly 3 includes a water pipe 31 and several heat-conducting plates 32. The heat-conducting plates 32 are evenly distributed vertically on the heating rod 21. The water pipe 31 is a serpentine pipe. Multiple perforations are provided on the heat-conducting plates 32. The water pipe 31 passes through the perforations sequentially through the heat-conducting plates 32. The inlet end of the water pipe 31 is connected to the water tank 7 via an inlet on the top 9 of the first tank, and the outlet end of the water pipe 31 is connected to the water tank 7 via an outlet on the top 9 of the first tank, forming a complete cooling circuit. A perforation is provided at the center of the heat-conducting plate 32. The air inlet pipe 13 passes through the perforation through the heat-conducting plate. The heat-conducting plate 32 is a circular plate with circular fins. Hydrogen storage material is stored between the circular fins. The heat-conducting plate 32 is equipped with water pipes 31. The coolant in the water pipes 31 can remove the heat generated when the hydrogen storage material absorbs hydrogen, and can also remove the heat above the heat-conducting plate 32. Similarly, the heating rod 21 is located at the center of several heat-conducting plates 32, which can provide temperature for the hydrogen storage material when releasing hydrogen, thereby increasing the hydrogen release rate. The heat-conducting plate 32 is made of aluminum, copper, or their alloys, which have high thermal conductivity; the coolant is heat-conducting oil.

[0039] When hydrogen storage is required, hydrogen enters the tank 8 through the inlet pipe 13. The first heating component 1 shuts off and the second heating component 2 stops working simultaneously. Water flows into the water tank 7 from the inside of the water pipe 31. The heat-conducting plate 32 is connected to the water pipe 31. The heat-conducting plate 32 absorbs the heat of the hydrogen storage material between the inside of the tank 8 and the fins on the heat-conducting plate 32. At the same time, when the water flows from the water pipe 31 through the heat-conducting plate 32, it carries away the heat above the circular heat-conducting plate 32. Finally, the water flows out from the inside of the water pipe 31 and returns to the water tank 7 to complete the cycle.

[0040] When hydrogen needs to be released, the inlet pipe 13 is opened, and the first heating component 1 and the second heating component 2 are activated. Hydrogen gas exits from the inlet pipe 13. The heating wire 12 inside the first heating component 1 is activated to heat the hydrogen gas at the outlet. At the same time, the second heating component 2 is activated. The heat generated by the heating rod 21 in the second heating component 2 is diffused onto the heat conduction plate 32. This not only accelerates the release of hydrogen gas from the hydrogen storage material between the fins of the heat conduction plate 32, but also improves the thermal uniformity inside the tank 8.

[0041] The solid hydrogen storage material is a powder medium. To prevent the risk of material leakage during hydrogen storage or release, a filter assembly 4 is added. The filter assembly 4 has three layers of filtration. The first layer, activated carbon sponge 41, is arranged in the middle of the shell 42. Combined with the placement of the air inlet pipe 13 and the shell 42, it can effectively prevent backflow of the powder medium when releasing hydrogen, which would cause leakage of the hydrogen storage material. The second layer is a filter screen 44, which is placed in the middle of the air inlet pipe 13 and the shell 42 and above the activated carbon sponge 41. It can effectively prevent the transfer of the powder medium. The third layer, filter sheet 43, is placed inside the air inlet pipe 13, which can effectively prevent the leakage of tiny powder particles.

[0042] A solid-gas coupled hydrogen storage tank assembly includes several tanks 8 and a telescopic assembly 5. The telescopic assembly 5 includes a telescopic platform 51 and a telescopic manipulator 52. The telescopic platform 51 has a cuboid structure and is located on one side of a base 6. The telescopic manipulator 52 is connected to the telescopic platform 51, and its other end is fixedly connected to a second tank 8. The base 6 has a cuboid structure and a groove provided on it, in which the tanks 8 are fixedly connected.

[0043] A water tank 7 is also fixedly connected to the base 6. The water tank 7 is located on one side of the tank body 8. The water outlet of the water tank 7 is connected to the water inlet of the first tank body 8 through a pipe and the water inlet of the water pipe 31. The water inlet of the water tank 7 is connected to the water outlet of the first tank body 8 through a pipe and the water outlet of the water pipe 31, thereby completing the cooling cycle.

[0044] The telescopic manipulator 52 is connected to the second tank top 10. When the tank 8 is collided or deformed, and the tank 8 needs to be replaced immediately, the bolts connecting the second tank top 10 and the tank 8 are loosened. The telescopic manipulator 52 moves the second tank top 10 backward to remove the tank 8. After the tank 8 is replaced, the telescopic manipulator 52 moves the second tank top 10 forward and inserts it into the tank 8 to work again.

[0045] Workflow: During the hydrogen storage stage, the cooling system is activated, and hydrogen gas is injected into the tank 8 through the inlet pipe 13. At this time, both the first heating component 1 and the second heating component 2 are in the off state. The hydrogen gas contacts the solid hydrogen storage material in the finned structure above the heat-conducting plate 32 and triggers a hydrogen absorption reaction. When the material reaches its saturation adsorption capacity, the reaction terminates, and the unreacted excess hydrogen gas is temporarily stored in the reserved space inside the tank. The water tank 7 drives the coolant to flow through the serpentine circulation pipeline. The heat-conducting plate 32 and the water pipe 31 form a heat conduction link. While absorbing the heat from the reaction between the hydrogen storage material and the tank 8, the coolant continuously conducts heat to the external heat dissipation unit, ultimately completing the closed-loop heat exchange.

[0046] During the hydrogen release phase, the heating system is activated. The first heating component 1 preheats the hydrogen gas at the top via an electric heating element, while the heating rod 21 of the second heating component 2 conducts heat energy to the fins on the heat-conducting plate 32. The heated fin area of ​​the heat-conducting plate 32 accelerates the desorption reaction of the hydrogen storage material inside the fins, and the released hydrogen gas mixes with the existing gas in the tank. This dual-stage heating mechanism not only enhances the hydrogen release kinetics of the hydrogen storage material but also optimizes the internal temperature gradient of the tank 8 through a uniform thermal field distribution, ensuring stable hydrogen output.

[0047] The cooling system is located above the heating system, the filtration system is located above the heating system, and the telescopic system is located behind the heating system. This effectively avoids interference between the cooling system, heating system, filtration system, and telescopic system during installation, facilitates the design and integration of the hydrogen storage tank, maximizes space utilization, and further improves the compactness of the structure.

[0048] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A solid-gas coupled hydrogen storage tank, characterized in that, include: The tank body (8) has a first tank top (9) on its top and a second tank top (10) on its bottom. The first heating component (1) is disposed inside the top (9) of the first tank; A filter assembly (4) is located below the first heating assembly (1) and is disposed inside the tank (8) to prevent leakage of hydrogen storage material powder. The filter assembly (4) includes a filter sheet (43), a filter screen (44) and an activated carbon sponge (41). The filter sheet (43) is disposed inside the air inlet pipe (13), the activated carbon sponge (41) is disposed around the air inlet pipe (13), and the filter screen (44) is disposed on top of the activated carbon sponge (41). The second heating component (2) is disposed inside the tank (8) and located below the filter component (4) for heating the hydrogen storage material; Cooling component (3) is disposed inside the tank body (8) and located outside the second heating component (2) for absorbing the heat of hydrogen storage reaction.

2. The solid-gas coupled hydrogen storage tank according to claim 1, characterized in that: The first heating component (1) includes a shell (11) and a heating wire (12). The shell (11) has a hollow structure inside. The shell (11) is fixedly connected to the inside of the first tank top (9). The heating wire (12) is spirally distributed inside the shell (11). The air inlet pipe (13) passes through the shell (11).

3. The solid-gas coupled hydrogen storage tank according to claim 1, characterized in that: The filter assembly (4) also includes a housing (42), the inner end of which is fixedly connected to the outside of the activated carbon sponge (41), and the outer end of which is fixedly connected to the inner wall of the tank (8).

4. The solid-gas coupled hydrogen storage tank according to claim 1, characterized in that: The second heating component (2) includes a heating rod (21), which is fixedly connected to the top of the second tank (10). The heating rod (21) is located below the activated carbon sponge (41) and inside the tank body (8).

5. The solid-gas coupled hydrogen storage tank according to claim 4, characterized in that: The cooling assembly (3) includes a water pipe (31) and several heat-conducting plates (32). The heat-conducting plates (32) are sleeved on the outside of the heating rod (21). The water pipe (31) is a serpentine pipe that passes through several heat-conducting plates (32) in sequence.

6. The solid-gas coupled hydrogen storage tank according to claim 5, characterized in that: The heat-conducting plate (32) is provided with circular fins, and hydrogen storage material is stored between the circular fins.

7. The solid-gas coupled hydrogen storage tank according to claim 5, characterized in that: An air inlet is provided on the top (9) of the first tank, and an air inlet pipe (13) is connected to the air inlet. A water inlet and a water outlet are also provided, and are respectively connected to the water inlet end and the water outlet end of the water pipe (31).

8. A solid-gas coupled hydrogen storage tank assembly, based on any one of claims 1-7, characterized in that: It includes several tanks (8) and a telescopic assembly (5). The telescopic assembly (5) includes a telescopic platform (51) and a telescopic manipulator (52). The telescopic manipulator (52) is connected to the telescopic platform (51), which is connected to the base (6). The other end of the telescopic manipulator (52) is connected to the top of the second tank (10).

9. The solid-gas coupled hydrogen storage tank assembly according to claim 8, characterized in that: The base (6) is provided with a number of grooves, and a number of the cans (8) are fixedly connected in the grooves.

10. The solid-gas coupled hydrogen storage tank assembly according to claim 8, characterized in that: A water tank (7) is also provided on the base (6). The water outlet and water inlet of the water tank (7) are connected to the water inlet and water outlet on the top of the first tank (9) respectively through pipes.

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