An apparatus for solid hydrogen storage

Abstract

The application discloses a kind of equipment for solid hydrogen storage, it is related to solid hydrogen storage equipment technical field, including tank body, it is characterized in that, the outer top surface of the tank body is respectively provided with heat exchange box and hydrogen tank from bottom to top, the inside of the heat exchange box is provided with heat exchange distribution assembly, the inside of the hydrogen tank is provided with hydrogen distribution assembly, the hydrogen distribution assembly includes annular cavity being opened in the inside of hydrogen tank, the outer bottom surface of the hydrogen tank is fixedly connected with gas guide pipe being distributed in circumferential array, the outer bottom surface of several gas guide pipes is equipped with hydrogen distribution collection pipe, hydrogen hole is equipped on hydrogen distribution collection pipe cavity wall.The application can drive hydrogen distribution collection pipe to move up and down inside the tank body by the cooperation of electric push rod, horizontal plate, arc strip, round rod and cross piece, to change the discharge position of hydrogen hole, realize hydrogen stratification, distributed uniform diffusion, there is no ventilation dead angle, the utilization rate of solid hydrogen storage material is greatly improved, effectively improve the overall hydrogen storage density of equipment.

Description

Technical Field

[0001] This invention relates to the field of solid hydrogen storage equipment technology, specifically a device for solid hydrogen storage. Background Technology

[0002] Hydrogen energy, as a clean and efficient secondary energy source, boasts significant advantages such as zero carbon emissions, high energy density, and wide availability. It serves as a core energy carrier for upgrading the new energy industry and achieving dual-carbon goals, finding widespread application in various fields including on-board hydrogen power, distributed energy storage, industrial high-purity hydrogen supply, and hydrogen energy storage power stations. Hydrogen storage technology, as a crucial link in hydrogen energy storage, transportation, and large-scale application, directly determines the operational safety, economy, and practicality of hydrogen energy systems.

[0003] Currently, mainstream hydrogen storage technologies are mainly divided into three categories: high-pressure gaseous hydrogen storage, cryogenic liquid hydrogen storage, and solid-state hydrogen storage. Among them, high-pressure gaseous hydrogen storage suffers from problems such as high storage pressure, stringent tank pressure requirements, and significant safety hazards. Cryogenic liquid hydrogen storage has drawbacks such as high energy consumption, high insulation requirements, expensive storage and transportation costs, and significant liquid hydrogen volatilization losses. In contrast, solid-state hydrogen storage relies on solid media such as hydrogen storage alloys and non-metallic hydrogen storage materials to achieve reversible hydrogen storage. It has significant advantages such as low storage and transportation pressure, high safety and stability, high hydrogen volume density, no risk of hydrogen leakage, and low energy consumption, making it the hydrogen storage technology route with the greatest potential for industrialization.

[0004] Most existing commercial solid hydrogen storage devices adopt a vertical tank structure, which realizes hydrogen storage and release through built-in hydrogen distribution chambers and heat exchange structures. For example, the vertical solid hydrogen storage device with publication number CN118998607B realizes hydrogen storage and heat exchange through a layered chamber structure, avoiding the harsh conditions of high pressure and low temperature hydrogen storage, and has basic safe hydrogen storage and stable hydrogen release performance, which can meet the basic hydrogen storage operation requirements.

[0005] However, existing hydrogen storage equipment still suffers from many core technological shortcomings in practical industrial applications, which severely restrict the equipment's hydrogen storage efficiency, material utilization rate, and ease of operation and maintenance.

[0006] First, the hydrogen flow hole structure of traditional equipment is fixed, and hydrogen can only come into contact with the hydrogen storage material in the tank by natural diffusion. The gas flow range is limited, and dead zones are easy to appear inside the tank. As a result, the local hydrogen storage material cannot fully participate in the hydrogen storage and release reaction, the utilization rate of the hydrogen storage material is greatly reduced, and the overall hydrogen storage density and reaction uniformity of the equipment are poor.

[0007] Secondly, most existing equipment adopts an integrated closed fixed structure, with the tank, heat exchange components, and hydrogen components assembled as a whole. The structure is difficult to disassemble. When the hydrogen storage material ages and fails, or when the internal components of the equipment are clogged with dust or fail, it is impossible to quickly replace materials, clean the internal parts, and repair the faults. The equipment has long downtime and high maintenance costs.

[0008] In addition, traditional solid hydrogen storage equipment has a simple heat exchange structure, relying mainly on the outer wall of the tank for heat exchange. The heat exchange contact area is small and the heat exchange uniformity is poor. It cannot achieve rapid heating and cooling of the entire tank interior, making it difficult to adapt to the different chemical conditions required for low-temperature adsorption of hydrogen storage and high-temperature desorption of hydrogen release. The hydrogen storage and release response speed is slow and the operation efficiency is low.

[0009] To address these issues, those skilled in the art have provided a device for solid hydrogen storage. Summary of the Invention

[0010] The purpose of this invention is to address the problems mentioned in the background art, such as the fixed position of the hydrogen vents leading to natural diffusion of hydrogen, which easily causes localized poor ventilation and incomplete reaction, and the fact that the overall closed structure makes it difficult to quickly replace the hydrogen storage material after aging and failure, resulting in cumbersome equipment troubleshooting and a short overall service life. The invention provides a device for solid hydrogen storage.

[0011] To achieve the above objectives, the present invention provides the following technical solution: a device for solid hydrogen storage, comprising a tank, wherein a heat exchange box and a hydrogen tank are respectively provided on the outer top surface of the tank from bottom to top, a heat exchange distribution component is provided inside the heat exchange box, and a hydrogen distribution component is provided inside the hydrogen tank;

[0012] The heat exchange distribution assembly includes an inlet and an outlet chamber located inside the heat exchange box. The inlet and outlet chambers are symmetrically arranged. Multiple U-shaped heat exchange tubes are fixed inside the tank and on the bottom surface of the heat exchange box. The feed end of the multiple U-shaped heat exchange tubes is fixedly connected to the inlet chamber, and the discharge end is fixedly connected to the outlet chamber. A flow guide channel with a downward spiral trajectory is opened inside the tank wall. A discharge chamber is opened inside the bottom of the tank. The discharge end of the flow guide channel is interconnected with the discharge chamber.

[0013] The hydrogen distribution assembly includes an annular cavity inside a hydrogen tank. A series of gas guide pipes arranged in a circular array are fixedly connected to the outer bottom surface of the hydrogen tank. Each of the gas guide pipes has a hydrogen distribution and collection pipe on its outer bottom surface. The hydrogen distribution and collection pipe has hydrogen holes on its cavity wall, the diameter of which is smaller than the minimum particle size of the solid hydrogen storage material. A horizontal block is fixed to the top of the inner wall of each of the hydrogen distribution and collection pipes. A series of horizontal plates arranged in a circular array are provided inside the annular cavity. A round rod is symmetrically fixed to the outer bottom surface of each of the four horizontal plates. The bottom end of the round rod slides through the gas guide pipe, extends into the hydrogen distribution and collection pipe, and is fixedly connected to the horizontal block. The four horizontal plates are fixedly connected to each other by arc-shaped strips. A circular sleeve is fixed to the top surface of each of the hydrogen distribution and collection pipes. Grooves are symmetrically formed on the inner wall of the circular sleeve. A convex strip that matches the groove is symmetrically fixed to the outer wall of each of the gas guide pipes.

[0014] Both the inlet and outlet chambers are fixed with circular tubes that fit the circular sleeve. The circular sleeve is slidably connected inside the circular tube. A hydrogen storage material inlet pipe is fixedly connected to the center of the outer bottom surface of the heat exchange box. The top end of the hydrogen storage material inlet pipe extends to the outer top surface of the heat exchange box. A hydrogen storage material outlet pipe is fixedly connected to the inner bottom surface of the tank. The bottom end of the hydrogen storage material outlet pipe extends to the outer bottom surface of the tank.

[0015] As a further embodiment of the present invention: the outer bottom surface of the tank is provided with support blocks at equal intervals, the outer bottom surface of the four support blocks is fixed with a supporting bottom ring, the outer top surface of the supporting bottom ring is provided with a plurality of mounting screw holes, the outer top surface of the four support blocks is provided with slots, the outer bottom surface of the tank is fixed with inserts that are compatible with the slots, and the support blocks are all fixedly connected to the tank by bolts.

[0016] As a further aspect of the present invention, the outer wall of the tank is vertically fixed with several reinforcing ribs.

[0017] As a further embodiment of the present invention: an electric push rod is symmetrically installed on the outer top surface of the hydrogen tank, the output ends of the two electric push rods slide into the interior of the annular cavity and are fixedly connected to the horizontal plate, and a circular hole adapted to the hydrogen storage material inlet pipe is opened inside the heat exchange box.

[0018] As a further embodiment of the present invention: the outer top surface of the hydrogen tank is respectively fixed with a hydrogen inlet pipe and a hydrogen outlet pipe that are interconnected with the annular cavity.

[0019] As a further embodiment of the present invention: a pipe 1 is fixedly connected to the outer wall of the heat exchange box and corresponding to the inlet cavity; a pipe 2 is fixedly connected to the outer wall of the heat exchange box and corresponding to the outlet cavity; a pipe 3 is fixedly connected to the outer wall of the tank body and communicates with the guide channel; a pipe 4 is fixedly connected to the outer wall of the pipe 1; the pipe 3 and the pipe 4 are connected to each other by flanges; and a pipe 5 is fixedly connected to the outer bottom surface of the tank body and communicates with the discharge cavity.

[0020] As a further embodiment of the present invention: a high-temperature resistant fluororubber sealing gasket is attached between the tank body and the heat exchange box, and they are connected by flanges; a high-temperature resistant fluororubber sealing gasket is attached between the heat exchange box and the hydrogen tank, and they are connected by flanges.

[0021] As a further aspect of the present invention: the outer walls of the plurality of U-shaped heat exchange tubes are each fixed with a number of annular heat exchange fins.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] This invention, through the coordinated action of an electric push rod, a horizontal plate, an arc-shaped strip, a round rod, and a horizontal block, can drive the hydrogen distribution and collection pipe to move up and down inside the tank, thereby changing the discharge position of the hydrogen vents. This achieves hydrogen stratification, distributed and uniform diffusion, eliminates dead zones in ventilation, significantly improves the utilization rate of solid hydrogen storage materials, and effectively increases the overall hydrogen storage density of the equipment.

[0024] This invention enables a detachable assembly structure between the tank, heat exchange box, hydrogen tank and supporting bottom ring through the interaction of support blocks, slots, inserts, round holes and round tubes. This allows for the rapid replacement of hydrogen storage materials and the cleaning and maintenance of internal components without the need for complete equipment replacement, thereby significantly reducing subsequent operation and maintenance costs and downtime, and making it suitable for large-scale commercial scenarios.

[0025] This invention, through the mutual assistance of U-shaped heat exchange tubes, annular heat exchange fins, flow guiding channels, and discharge chambers, can form a bidirectional heat exchange system for solid hydrogen storage materials, both internally and externally. Combined with spiral flow guiding, it significantly improves heat exchange uniformity and efficiency, avoids the limitations of traditional single external wall heat exchange, and can achieve rapid heating and cooling, making it suitable for high and low temperature hydrogen storage and release conditions. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a three-dimensional exploded structural diagram of the present invention;

[0028] Figure 3 This is a schematic diagram of the first cross-section of the three-dimensional structure of the present invention;

[0029] Figure 4This is a schematic diagram of the second cross-section of the three-dimensional structure of the present invention;

[0030] Figure 5 This is a three-dimensional structural diagram of the hydrogen distribution component of the present invention;

[0031] Figure 6 This is a three-dimensional exploded structural diagram of the hydrogen distribution component of the present invention;

[0032] Figure 7 This is a schematic diagram of the hydrogen tank structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the heat exchanger structure of the present invention;

[0034] Figure 9 This is a schematic diagram of the tank structure of the present invention;

[0035] Figure 10 This is a schematic diagram of the support block structure of the present invention.

[0036] In the diagram: 1. Tank body; 101. Hydrogen storage material inlet pipe; 102. Hydrogen storage material outlet pipe; 2. Heat exchange box; 3. Hydrogen tank; 4. Heat exchange distribution assembly; 401. Inlet cavity; 402. Outlet cavity; 403. U-shaped heat exchange tube; 404. Flow guide channel; 405. Discharge chamber; 406. Circular tube; 407. Pipeline 1; 408. Pipeline 2; 409. Pipeline 3; 410. Pipeline 4; 411. Pipeline 5; 412. Annular heat exchange fins; 5. Hydrogen distribution... Components; 501, Annular cavity; 502, Gas guide tube; 503, Hydrogen distribution and collection tube; 504, Hydrogen port; 505, Horizontal block; 506, Horizontal plate; 507, Round rod; 508, Arc strip; 509, Round sleeve; 510, Groove; 511, Protruding strip; 512, Electric push rod; 513, Round hole; 514, Hydrogen inlet pipe; 515, Hydrogen outlet pipe; 6, Support block; 601, Support bottom ring; 602, Slot; 603, Insert block; 7, Reinforcing rib. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-10In this embodiment of the invention, a device for solid hydrogen storage includes a tank 1. A heat exchange box 2 and a hydrogen tank 3 are respectively provided on the outer top surface of the tank 1 from bottom to top. Support blocks 6 are provided at equal intervals on the outer bottom surface of the tank 1. A supporting bottom ring 601 is fixed to the outer bottom surface of the four support blocks 6. Several mounting screw holes are opened on the outer top surface of the supporting bottom ring 601. A slot 602 is opened on the outer top surface of each of the four support blocks 6. An insert block 603 adapted to the slot 602 is fixed to the outer bottom surface of the tank 1. The support blocks 6 are all fixedly connected to the tank 1 by bolts. A high-temperature resistant fluororubber sealing gasket is bonded between the tank 1 and the heat exchange box 2, and they are connected by flanges. A second high-temperature resistant fluororubber sealing gasket is bonded between the heat exchange box 2 and the hydrogen tank 3, and they are connected by flanges.

[0039] In this embodiment: During use, firstly, the bolts in the mounting screw holes are tightened to fix the support bottom ring 601 in the designated position. Then, the tank 1 is placed on top of the support block 6, and the insert block 603 is engaged with the slot 602. Subsequently, the bolts are tightened to fix the tank 1 on the support block 6, ensuring the stability of the tank 1 and facilitating subsequent disassembly and relocation. At the same time, the heat exchange box 2 is placed on the outer top surface of the tank 1, and the hydrogen tank 3 is placed on the outer top surface of the heat exchange box 2. Then, the flange is locked with multi-point bolts. Meanwhile, the high-pressure sealing effect between the tank 1, the heat exchange box 2, and the hydrogen tank 3 is achieved through high-temperature resistant fluororubber sealing gaskets one and two, which can effectively prevent hydrogen leakage and powder leakage, ensuring the safe and stable operation of the equipment. Furthermore, the whole system adopts a flange detachable assembly structure, which can quickly complete the replacement of hydrogen storage materials, cleaning and maintenance of internal components without replacing the entire equipment, thereby significantly reducing the later maintenance costs and downtime, and adapting to large-scale commercial scenarios.

[0040] Please refer to this carefully. Figure 1 , Figure 2 , Figure 3 , Figure 8The heat exchange box 2 is equipped with a heat exchange distribution assembly 4, which includes an inlet chamber 401 and an outlet chamber 402 inside the heat exchange box 2. The inlet chamber 401 and the outlet chamber 402 are symmetrically arranged. Multiple U-shaped heat exchange tubes 403 are fixed inside the tank body 1 and on the outer bottom surface of the heat exchange box 2. The feed end of the multiple U-shaped heat exchange tubes 403 is fixedly connected to the inlet chamber 401, and the discharge end is fixedly connected to the outlet chamber 402. A flow guide channel 404 with a downward spiral trajectory is opened inside the tank wall of the tank body 1. A discharge chamber 405 is opened inside the bottom of the tank body 1. The outlet of the flow guide channel 404 is... The material end and the discharge chamber 405 are interconnected. The outer wall of the heat exchange box 2 and the corresponding inlet 401 are fixedly connected to the pipe 407. The outer wall of the heat exchange box 2 and the corresponding outlet 402 are fixedly connected to the pipe 408. The outer wall of the tank 1 is fixedly connected to the pipe 409, which is connected to the guide channel 404. The outer wall of the pipe 407 is fixedly connected to the pipe 410. The pipes 409 and 410 are connected to each other by flanges. The bottom surface of the tank 1 is fixedly connected to the pipe 411, which is connected to the discharge chamber 405. The outer walls of the multiple U-shaped heat exchange tubes 403 are fixed with several annular heat exchange fins 412.

[0041] In this embodiment: During use, firstly, pipe 407 is opened to allow the high-temperature heat exchange medium to enter the inlet chamber 401 of the heat exchange box 2. Then, it is diverted to multiple U-shaped heat exchange tubes 403, providing heat to the solid hydrogen storage material inside the tank 1. The annular heat exchange fins 412 maximize the heat exchange contact area. After releasing heat, the high-temperature heat exchange medium flows into the outlet chamber 402 and exits the heat exchange box 2 via pipe 408. The heat exchange medium can be water, nitrogen, air, or other fluids. Simultaneously, while the high-temperature heat exchange medium flows in pipe 407, it is diverted through pipe 409 to pipe 410 and enters the guide channel 404. It then spirals downwards inside the tank wall and enters the discharge chamber 405, before flowing through pipe 4... 11. Leaving tank 1, similarly, the low-temperature heat exchange medium enters the inlet chamber 401 of the heat exchange box 2 through pipe 1 407, and then flows into multiple U-shaped heat exchange tubes 403 to absorb the heat released inside tank 1. After absorbing the heat, the low-temperature heat exchange medium flows into the outlet chamber 402 and leaves the heat exchange box 2 through pipe 2 408. At the same time, when the low-temperature heat exchange medium flows in pipe 1 407, it is diverted to pipe 410 through pipe 3 409 and enters the guide channel 404. It flows spirally downward inside the tank wall and enters the discharge chamber 405. Then it leaves tank 1 through pipe 5 411. Through the internal and external bidirectional layered heat exchange structure, the limitations of traditional single external wall heat exchange are avoided, and rapid heating and cooling can be achieved, which is suitable for high and low temperature hydrogen storage and release conditions.

[0042] Please refer to this carefully. Figure 3A hydrogen storage material inlet pipe 101 is fixedly connected to the center of the outer bottom surface of the heat exchange box 2. The top end of the hydrogen storage material inlet pipe 101 extends to the outer top surface of the heat exchange box 2. A hydrogen storage material outlet pipe 102 is fixedly connected to the inner bottom surface of the tank body 1. The bottom end of the hydrogen storage material outlet pipe 102 extends to the outer bottom surface of the tank body 1.

[0043] In this embodiment: during use, the hydrogen storage material outlet pipe 102 is first closed, and then the hydrogen storage material inlet pipe 101 is opened. Under the action of gravity, the solid hydrogen storage material enters and is stored inside the tank 1 along the hydrogen storage material inlet pipe 101. When the lifespan of the solid hydrogen storage material deteriorates and it needs to be replaced, the hydrogen storage material outlet pipe 102 is opened, and under the action of gravity, the solid hydrogen storage material in the tank 1 leaves the hydrogen storage device from the hydrogen storage material outlet pipe 102.

[0044] Please refer to this carefully. Figures 1 to 7 The hydrogen tank 3 is equipped with a hydrogen distribution assembly 5. The hydrogen distribution assembly 5 includes an annular cavity 501 inside the hydrogen tank 3. The outer bottom surface of the hydrogen tank 3 is fixedly connected to a series of gas guide pipes 502 arranged in a circular array. The outer bottom surface of several gas guide pipes 502 is provided with hydrogen distribution and collection pipes 503. The wall of the hydrogen distribution and collection pipes 503 is provided with hydrogen holes 504. The diameter of the hydrogen holes 504 is smaller than the minimum particle size of the solid hydrogen storage material. The top of the inner wall of several hydrogen distribution and collection pipes 503 is fixed with a horizontal block 505. The annular cavity 501 is equipped with a series of horizontal plates 506 arranged in a circular array. The outer bottom surface of the four horizontal plates 506 is symmetrically fixed with round rods 507. The bottom end of the round rods 507 slides through the gas guide pipes 502 and extends into the hydrogen distribution and collection pipes 503 and is fixedly connected to the horizontal blocks 505. The four horizontal plates 506 are connected by arc-shaped strips. The components 508 are fixedly connected to each other. A circular sleeve 509 is fixed to the outer top surface of several hydrogen distribution and collection pipes 503. The inner wall of the circular sleeve 509 is symmetrically provided with grooves 510. The outer wall of several gas guide pipes 502 is symmetrically fixed with protrusions 511 that are adapted to the grooves 510. The inside of the inlet cavity 401 and the outlet cavity 402 is fixed with a circular tube 406 that is adapted to the circular sleeve 509. The circular sleeve 509 is slidably connected to the inside of the circular tube 406. Electric push rods 512 are symmetrically installed on the outer top surface of the hydrogen tank 3. The output ends of the two electric push rods 512 slide to the inside of the annular cavity 501 and are fixedly connected to the horizontal plate 506. The inside of the hydrogen tank 3 is provided with a circular hole 513 that is adapted to the hydrogen storage material inlet pipe 101. The outer top surface of the hydrogen tank 3 is respectively fixed with a hydrogen inlet pipe 514 and a hydrogen outlet pipe 515 that are interconnected with the annular cavity 501.

[0045] In this embodiment: During use, hydrogen is first introduced into the annular cavity 501 through the hydrogen inlet pipe 514, and then enters the hydrogen distribution and collection pipe 503 along the gas guide pipe 502. It is then discharged into the tank 1 through the hydrogen hole 504, where it is absorbed and stored by the solid hydrogen storage material. During the hydrogen filling process, the electric push rod 512 is controlled and activated to drive the horizontal plate 506, which in turn moves the round rod 507 downwards. This, in turn, drives the hydrogen distribution and collection pipe 503 up and down inside the tank 1 via the horizontal block 505, thereby changing the discharge position of the hydrogen hole 504. This system achieves stratified and uniformly distributed hydrogen diffusion without any dead zones, significantly improving the utilization rate of solid hydrogen storage materials and effectively increasing the overall hydrogen storage density of the equipment. Simultaneously, when the hydrogen distribution and collection pipe 503 moves up and down, it slides on the protrusion 511 on the outer wall of the gas guide pipe 502 via the groove 510 on the circular sleeve 509, ensuring stable movement. Similarly, during hydrogen release, the released hydrogen enters the hydrogen distribution and collection pipe 503 through the hydrogen hole 504, then enters the annular cavity 501 through the gas guide pipe 502, and finally leaves the hydrogen tank 3 through the hydrogen outlet pipe 515.

[0046] Please refer to this carefully. Figure 1 , Figure 9 The outer wall of tank 1 is vertically fixed with several reinforcing ribs 7.

[0047] In this embodiment: During use, the reinforcing ribs 7 are used to enhance the support and protection of the tank body 1, further ensuring the safety of the equipment.

[0048] The specific steps of this solution are as follows: First, the support bottom ring 601 is fixed at the designated position. Then, the tank body 1 is bolted to the support block 6. Subsequently, the heat exchange box 2 is sealed and fixed to the tank body 1, and the hydrogen tank 3 is sealed and fixed to the heat exchange box 2, achieving a rapid assembly and installation effect. At the same time, the solid hydrogen storage material enters and is stored inside the tank body 1 along the hydrogen storage material inlet pipe 101. Meanwhile, hydrogen enters the annular cavity 501 along the hydrogen inlet pipe 514, and then enters the hydrogen distribution and collection pipe 503 along the gas guide pipe 502 and is discharged into the tank body 1 through the hydrogen hole 504 for absorption and storage by the solid hydrogen storage material.

[0049] During the hydrogen charging process, the electric push rod 512 is activated to drive the horizontal plate 506 to move the round rod 507 downwards. This, in turn, drives the hydrogen distribution and collection pipe 503 to move up and down inside the tank 1 through the horizontal block 505, changing the hydrogen discharge position of the hydrogen hole 504. This achieves hydrogen stratification, distributed and uniform diffusion without any dead zones. Simultaneously, the low-temperature heat exchange medium is introduced from the pipe 407 into the inlet 401 of the heat exchange box 2, and then diverted to multiple U-shaped heat exchange tubes 403 to absorb the heat released by the solid hydrogen storage material absorbing hydrogen.

[0050] After absorbing heat, the low-temperature heat exchange medium flows into the outlet cavity 402 and leaves the heat exchange box 2 through pipe two 408. Simultaneously, the low-temperature heat exchange medium is diverted through pipe three 409 to pipe four 410 and enters the guide channel 404. It spirals downward inside the tank wall, absorbing the heat released by the solid hydrogen storage material absorbing hydrogen. After absorbing heat, the low-temperature heat exchange medium flows into the discharge cavity 405 and then leaves the tank 1 through pipe five 411. Then, the high-temperature heat exchange medium enters the inlet cavity 401 of the heat exchange box 2 through pipe one 407 and is then diverted to multiple U-shaped heat exchange tubes 403 to provide heat to the solid hydrogen storage material inside the tank 1. The heat exchange contact area can be maximized through the annular heat exchange fins 412.

[0051] After releasing heat, the high-temperature heat exchange medium flows into the outlet cavity 402 and leaves the heat exchange box 2 through pipe 2 408. Simultaneously, the high-temperature heat exchange medium is diverted through pipe 3 409 to pipe 410 and enters the guide channel 404. It spirals downward inside the tank wall and enters the discharge chamber 405. Then it leaves the tank 1 through pipe 5 411. The solid hydrogen storage material absorbs heat and releases hydrogen. The released hydrogen enters the hydrogen distribution and collection pipe 503 through the hydrogen hole 504, then enters the annular cavity 501 through the gas guide pipe 502, and then leaves the hydrogen tank 3 through the hydrogen outlet pipe 515.

[0052] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for solid hydrogen storage, comprising a tank (1), characterized in that, The outer top surface of the tank (1) is provided with a heat exchange box (2) and a hydrogen tank (3) from bottom to top. The heat exchange box (2) is provided with a heat exchange distribution component (4), and the hydrogen tank (3) is provided with a hydrogen distribution component (5). The heat exchange distribution component (4) includes an inlet cavity (401) and an outlet cavity (402) inside the heat exchange box (2). The inlet cavity (401) and the outlet cavity (402) are symmetrically arranged. Multiple U-shaped heat exchange tubes (403) are fixed inside the tank body (1) and on the outer bottom surface of the heat exchange box (2). The feed end of the multiple U-shaped heat exchange tubes (403) is fixedly connected to the inlet cavity (401), while the discharge end is fixedly connected to the outlet cavity (402). A flow guide channel (404) with a spiral trajectory downward is opened inside the tank wall of the tank body (1). A discharge cavity (405) is opened inside the bottom of the tank body (1). The discharge end of the flow guide channel (404) is interconnected with the discharge cavity (405). The hydrogen distribution assembly (5) includes an annular cavity (501) inside the hydrogen tank (3). A series of gas guide pipes (502) arranged in a circular array are fixedly connected to the outer bottom surface of the hydrogen tank (3). Several gas guide pipes (502) have hydrogen distribution and collection pipes (503) on their outer bottom surfaces. Hydrogen holes (504) are provided on the walls of the hydrogen distribution and collection pipes (503). The diameter of the hydrogen holes (504) is smaller than the minimum particle size of the solid hydrogen storage material. A horizontal block (505) is fixed to the top of the inner wall of several hydrogen distribution and collection pipes (503). A series of horizontal plates (505) arranged in a circular array are provided inside the annular cavity (501). 6) A round rod (507) is symmetrically fixed on the bottom surface of each of the four horizontal plates (506). The bottom end of the round rod (507) slides through the gas guide pipe (502) and extends into the hydrogen distribution and collection pipe (503) and is fixedly connected to the horizontal block (505). The four horizontal plates (506) are fixedly connected to each other by an arc strip (508). A round sleeve (509) is fixed on the top surface of each of the hydrogen distribution and collection pipes (503). The inner wall of the round sleeve (509) is symmetrically provided with grooves (510). The outer wall of each of the gas guide pipes (502) is symmetrically fixed with a protrusion (511) that matches the groove (510).

2. The device for solid hydrogen storage according to claim 1, characterized in that, The inlet cavity (401) and outlet cavity (402) are both fixed with a circular tube (406) that is compatible with the circular sleeve (509). The circular sleeve (509) is slidably connected to the inside of the circular tube (406). The center of the outer bottom surface of the heat exchange box (2) is fixedly connected to a hydrogen storage material inlet pipe (101). The top end of the hydrogen storage material inlet pipe (101) extends to the outer top surface of the heat exchange box (2). The inner bottom surface of the tank (1) is fixedly connected to a hydrogen storage material outlet pipe (102). The bottom end of the hydrogen storage material outlet pipe (102) extends to the outer bottom surface of the tank (1).

3. The device for solid hydrogen storage according to claim 1, characterized in that, The tank body (1) is provided with support blocks (6) at equal intervals on the outer bottom surface. The four support blocks (6) are fixed with a support bottom ring (601) on their outer bottom surfaces. The support bottom ring (601) has several mounting screw holes on its outer top surface. The four support blocks (6) are provided with slots (602) on their outer top surfaces. The tank body (1) is fixed with a plug (603) that matches the slot (602). The support blocks (6) are all fixedly connected to the tank body (1) by bolts.

4. The device for solid hydrogen storage according to claim 1, characterized in that, The outer wall of the tank (1) is vertically fixed with several reinforcing ribs (7).

5. The device for solid hydrogen storage according to claim 1, characterized in that, The hydrogen tank (3) is symmetrically equipped with electric push rods (512) on its outer top surface. The output ends of the two electric push rods (512) slide into the annular cavity (501) and are fixedly connected to the horizontal plate (506). The hydrogen tank (3) has a circular hole (513) inside that is compatible with the hydrogen storage material inlet pipe (101).

6. The device for solid hydrogen storage according to claim 1, characterized in that, The outer top surface of the hydrogen tank (3) is respectively fixed with a hydrogen inlet pipe (514) and a hydrogen outlet pipe (515) that are connected to the annular cavity (501).

7. The device for solid hydrogen storage according to claim 1, characterized in that, The outer wall of the heat exchange box (2) is fixedly connected to the inlet (401) of the heat exchange box (2), and the outer wall of the heat exchange box (2) is fixedly connected to the outlet (402) of the heat exchange box (2). The outer wall of the tank (1) is fixedly connected to the guide channel (404) of the pipe (3) (409). The outer wall of the pipe (1) is fixedly connected to the pipe (410) of the pipe (407). The pipe (3) (409) and the pipe (410) are connected to each other by flanges. The bottom surface of the tank (1) is fixedly connected to the discharge chamber (405) of the pipe (5) (411).

8. The device for solid hydrogen storage according to claim 1, characterized in that, The tank (1) and the heat exchange box (2) are fitted with a high-temperature resistant fluororubber sealing gasket and are connected to each other by flanges. The heat exchange box (2) and the hydrogen tank (3) are fitted with a high-temperature resistant fluororubber sealing gasket and are connected to each other by flanges.

9. A device for solid hydrogen storage according to claim 1, characterized in that, The outer walls of the multiple U-shaped heat exchange tubes (403) are each fixed with several annular heat exchange fins (412).

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