Fixed hydrogen storage device
By setting up an elastic partition structure and heat exchange pipe in the hydrogen storage container, the stress problem of the hydrogen storage container during hydrogen absorption expansion of the hydrogen storage alloy is solved, and safe storage and efficient heat exchange of hydrogen storage materials are achieved.
Patent Information
- Application Number
- CN202421365188.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The hydrogen storage container is subjected to greater stress when the hydrogen storage alloy absorbs hydrogen, which may cause the container to be deformed or damaged.
An elastic partition structure is provided in the hydrogen storage container, and the functional cavity is divided into multiple independent hydrogen storage chambers. The elastic parts are used to absorb the expansion stress of the hydrogen storage material, and the heat exchange area of the hydrogen storage material is increased through the heat exchange tube.
By dispersing the aggregation of the hydrogen storage material, the stress formed by lattice expansion is reduced, and the deformation or damage of the hydrogen storage container is avoided, while improving the hydrogen absorption and release rate and safety of the hydrogen storage material.
Smart Images
Figure CN222480208U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hydrogen storage, and in particular relates to a fixed hydrogen storage device. Background Art
[0002] As a very important industrial raw material and a clean energy source, hydrogen is widely used in petrochemical, electronics, metallurgy and other industries. With economic development, hydrogen production technology has become more and more mature, but the storage of hydrogen is still a challenge, especially in large-scale applications. The development of hydrogen storage devices is crucial to promoting the development of the hydrogen energy industry. At present, the main hydrogen storage methods include high-pressure gaseous hydrogen storage, low-temperature liquid hydrogen storage, and solid-state hydrogen storage using alloy hydrogen storage. Among them, solid-state hydrogen storage has gradually become the mainstream hydrogen storage method due to its higher safety and lower hydrogen storage cost.
[0003] Solid-state hydrogen storage technology uses metal hydrides to store hydrogen. The principle is that hydrogen is first catalytically decomposed into hydrogen atoms on the surface of the metal material, and then the hydrogen atoms diffuse into the internal gaps of the material lattice and are stored in the metal crystal point in an atomic state to form metal hydrides. The reaction process is reversible, thereby achieving the absorption and release of hydrogen. From the above process, it can be seen that the process of hydrogen absorption and release is a chemical reaction, and the process of hydrogen absorption and release is often accompanied by heat conversion. Therefore, the solid-state hydrogen storage device needs to have good heat exchange capacity to ensure the hydrogen absorption and release rate.
[0004] In addition, after the hydrogen storage alloy absorbs hydrogen, it will cause the lattice to expand. The expanded lattice exerts a greater pressure on the side wall of the hydrogen storage container, which may cause the hydrogen storage container to deform or be damaged. Summary of the invention
[0005] The utility model aims to provide a fixed hydrogen storage device to solve the problem that the hydrogen storage container is subjected to greater stress when the hydrogen storage alloy absorbs hydrogen and expands.
[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a fixed hydrogen storage device, comprising a hydrogen storage container and at least one elastic partition structure arranged in the hydrogen storage container, the hydrogen storage container is provided with a functional cavity, the elastic partition structure divides the functional cavity into a plurality of mutually independent hydrogen storage cavities, the hydrogen storage cavity is filled with hydrogen storage material, and the elastic partition structure is used to absorb the stress of the hydrogen storage material expanding when absorbing hydrogen by relying on elastic force.
[0007] In one embodiment, the elastic partition structure includes a first partition plate, a second partition plate, and an elastic member arranged between the first partition plate and the second partition plate. The first partition plate and the second partition plate are used to withstand the expansion stress of the hydrogen storage material and transfer the expansion stress to the elastic member, thereby absorbing the expansion stress by relying on the elastic force of the deformation of the elastic member.
[0008] In one embodiment, the first partition plate and the second partition plate are spaced apart in the up-down direction, and the elastic member is evenly arranged between the first partition plate and the second partition plate to prevent the first partition plate and / or the second partition plate from tilting due to expansion stress.
[0009] In one embodiment, the elastic member is a spring or a spring sheet, the first partition plate and the second partition plate are parallel to each other, and the deformation direction of the elastic member is perpendicular to the direction of the first partition plate and the second partition plate.
[0010] In one embodiment, it also includes a heat exchange tube passing through each hydrogen storage cavity, a portion of which is inserted between the hydrogen storage materials to provide heat or dissipate heat for the hydrogen storage materials to absorb and release hydrogen, and the heat exchange tube is provided with a branch pipe in the hydrogen storage cavity to increase the heat exchange area.
[0011] In one embodiment, the branch pipe of the heat exchange pipe is an arc-shaped or polygonal annular pipe.
[0012] In one embodiment, the heat exchange tube further includes a connecting tube connected to the branch tube, and the connecting tube extends from inside the hydrogen storage chamber to outside the hydrogen storage chamber to avoid the elastic partition structure.
[0013] In one embodiment, the hydrogen storage container includes a front end for providing hydrogen gas to enter and exit, and the other end of the hydrogen storage container relative to the front end is a rear end. At least one support plate is provided in the hydrogen storage container, and the support plate is arranged between the rear end and the front end. A rear end space is formed between the rear end of the hydrogen storage container and the support plate close to it, and the connecting pipe extends to the rear end space to avoid the elastic partition structure.
[0014] In one embodiment, the hydrogen storage container includes a front end for supplying hydrogen in and out, the other end of the hydrogen storage container relative to the front end is the rear end, two spaced support plates are provided in the hydrogen storage container, the two support plates are spaced in the direction from the rear end to the front end, the space between the two support plates in the hydrogen storage container forms the functional cavity, a rear end space is formed between the rear end of the hydrogen storage container and the support plate close thereto, a front end space is formed between the front end of the hydrogen storage container and the support plate close thereto, a gas manifold is provided in the front end space, one end of the gas manifold is connected to the functional cavity, and the other end forms a hydrogen inlet and outlet; and also includes a heat exchange tube, the heat exchange tube extends back and forth in the front and rear directions, and the liquid inlet and liquid outlet of the heat exchange tube are respectively arranged at positions close to the front end space of the hydrogen storage container.
[0015] The beneficial effects of the utility model are:
[0016] 1. The utility model disperses the hydrogen storage material in each hydrogen storage cavity by arranging an elastic partition structure in the hydrogen storage container, thereby reducing the amount of hydrogen storage material collection, thereby reducing the stress of the hydrogen storage material caused by lattice expansion; secondly, the elastic partition structure is formed between adjacent hydrogen storage cavities, and can absorb the stress of lattice expansion by elastic force, and the elastic deformation of the elastic partition structure can reserve a certain space for the expansion of the hydrogen storage material, reduce the pressure on the inner wall of the hydrogen storage container, and avoid deformation or damage of the hydrogen storage container.
[0017] 2. The heat exchange tubes are inserted into the hydrogen storage cavity to supply heat or dissipate heat to the hydrogen storage material, and the branches of the heat exchange tubes are inserted between the hydrogen storage materials to increase the heat exchange area; the connecting tubes of the heat exchange tubes are arranged in the rear end space to avoid damage to the elastic partition structure on the one hand, and to reduce the part of the heat exchange tubes extending outside the hydrogen storage container on the other hand, so that the external structure of the hydrogen storage container is simpler and easier to maintain.
[0018] 3. The two support plates divide the hydrogen storage container into a three-section structure. The middle area is filled with hydrogen storage materials. A manifold is set in the front space to gather the hydrogen inlet and outlet of the entire hydrogen storage device into one inlet and outlet. A connecting pipe of the heat exchange tube is set at the rear end, and the inlet and outlet of the heat exchange tube are set near the front end of the hydrogen storage container, so that the overall layout is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.
[0020] Figure 2 It is a schematic diagram of the elastic partition structure of an embodiment of the utility model.
[0021] Figure 3 It is a schematic diagram of the heat exchange tube structure of an embodiment of the utility model.
[0022] Among them: 1 hydrogen storage container, 11 functional cavity, 111 hydrogen storage cavity, 12 front end space, 13 rear end space, 2 elastic partition structure, 21 first partition plate, 22 second partition plate, 23 elastic member, 3 support plate, 31 first support plate, 32 second support plate, 4 gas manifold, 5 filter plate, 6 heat exchange tube, 61 liquid inlet, 62 liquid outlet, 63 branch pipe, 64 connecting pipe, 7 bracket. DETAILED DESCRIPTION
[0023] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.
[0024] See also Figures 1 to 3 As shown, the utility model discloses a fixed hydrogen storage device, including a hydrogen storage container 1 and at least one elastic partition structure 2 arranged in the hydrogen storage container 1, the hydrogen storage container 1 is provided with a functional cavity 11, the elastic partition structure 2 divides the functional cavity 11 into a plurality of mutually independent hydrogen storage cavities 111, the hydrogen storage cavity 111 is filled with hydrogen storage material, and the elastic partition structure 2 is used for absorbing the stress of the hydrogen storage material expanding by absorbing hydrogen by elastic force.
[0025] The utility model disperses the hydrogen storage material in each hydrogen storage cavity 111 by arranging an elastic partition structure 2 in the hydrogen storage container 1. The amount of hydrogen storage material filled in each hydrogen storage cavity 111 is the aggregate amount of the hydrogen storage material, and the aggregate amount of the hydrogen storage material is reduced, thereby reducing the stress of the hydrogen storage material caused by lattice expansion. Secondly, the elastic partition structure 2 is formed between adjacent hydrogen storage cavities 111, and can absorb the stress of lattice expansion by elastic force, and the elastic deformation of the elastic partition structure 1 can reserve a certain space for the expansion of the hydrogen storage material, reduce the pressure on the inner wall of the hydrogen storage container 1, and avoid deformation or damage of the hydrogen storage container 1. In this example, there is one elastic partition structure 2, and two hydrogen storage chambers 111 are formed in the hydrogen storage container 1. In other embodiments, a larger number of elastic partition structures 2 can be provided, and the number of hydrogen storage chambers 111 can be increased accordingly, so as to divide the units of the hydrogen storage material aggregation into smaller units, and further reduce the stress generated by each aggregation unit. However, this will increase the cost and reduce the total amount of hydrogen storage material in the hydrogen storage container. Therefore, the number of elastic partition structures 2 provided in each hydrogen storage container is determined by those skilled in the art based on the size of the hydrogen storage container, the hydrogen storage capacity, and other requirements during use.
[0026] The elastic partition structure 2 includes a first partition plate 21, a second partition plate 22, and an elastic member 23 disposed between the first partition plate 21 and the second partition plate 22. The first partition plate 21 and the second partition plate 22 are used to bear the expansion stress of the hydrogen storage material and transfer the expansion stress to the elastic member 23, so as to absorb the expansion stress by relying on the elastic force of the deformation of the elastic member 23. When the elastic member 23 is compressed and deformed by force, displacement space is reserved for the first partition plate 21 and the second partition plate 22. The displacement of the first partition plate 21 and the second partition plate 22 reserves expansion space for the hydrogen storage material. When the hydrogen storage material releases hydrogen and shrinks, the elastic member 23 extends under the action of the elastic force, so that the first partition plate 21 and the second partition plate 22 move in the direction where the hydrogen storage material is located, so that the hydrogen storage cavity 111 is always in a state of being filled or substantially filled with the hydrogen storage material.
[0027] The first partition plate 21 and the second partition plate 22 are arranged at intervals along the up-down direction, and the elastic member 23 is evenly arranged between the first partition plate 21 and the second partition plate 22 to prevent the first partition plate 21 and / or the second partition plate 22 from tilting due to expansion stress. The first partition plate 21 and the second partition plate 22 are both plate-like structures, so the hydrogen storage materials on both sides of the elastic partition structure 2 will basically not pass through the elastic partition structure 2 and move to the other side. Since the elastic partition structure 2 is placed in the hydrogen storage container 1 and is not strictly fixed, the elastic partition structure 2 may shift under stress and cause the hydrogen storage material to shift with it. In this example, by evenly arranging the elastic member 23 between the first partition plate 21 and the second partition plate 22, the displacement of the first partition plate 21 and the second partition plate 22 is made more uniform, preventing the hydrogen storage material from passing through the elastic partition structure 2.
[0028] The elastic member 23 can be a spring or a spring sheet, the first partition plate 21 and the second partition plate 22 are parallel to each other, and the deformation direction of the elastic member 23 is perpendicular to the first partition plate 21 and the second partition plate 22. In this example, a spring is used, and both ends of the spring are welded and fixed to the first partition plate 21 and the second partition plate 22 respectively.
[0029] The hydrogen storage container 1 includes a front end for supplying hydrogen in and out, and the other end of the hydrogen storage container 1 relative to the front end is the rear end. Two support plates 3 arranged at intervals are provided in the hydrogen storage container 1, including a first support plate 31 and a second support plate 32. The two support plates 3 are arranged at intervals in the direction from the rear end to the front end. The space between the two support plates 1 in the hydrogen storage container 1 forms a functional cavity 11. A front end space 12 is formed between the front end of the hydrogen storage container 1 and the support plate 3 (i.e., the first support plate 31) close to it, and a rear end space 13 is formed between the rear end of the hydrogen storage container 1 and the support plate 3 (i.e., the second support plate 32) close to it. The front end space 12 is provided with a gas manifold 4, one end of the gas manifold 4 is connected to the functional cavity 11 by being fixedly arranged on the first support plate 31, and the other end forms a hydrogen inlet and outlet. A filter plate 5 is provided at the hydrogen inlet and outlet for filtering the hydrogen in and out. The first support plate 31 and the second support plate 32 are both stainless steel plates, which can provide sufficient support strength and are not easily deformed and damaged due to the expansion stress of the hydrogen storage material.
[0030] It also includes a heat exchange tube 6, which extends back and forth in the front-to-back direction, and the liquid inlet 61 and the liquid outlet 62 of the heat exchange tube 6 are respectively arranged at positions near the front end space 12 of the hydrogen storage container 1. The heat exchange tube 6 is arranged in each hydrogen storage cavity 111, and a part of the heat exchange tube 6 is inserted between the hydrogen storage materials to provide heat or dissipate heat for the hydrogen storage materials to absorb and release hydrogen. The heat exchange tube 6 is provided with a branch pipe 63 in the hydrogen storage cavity 111 to increase the heat exchange area. The branch pipe 63 can be an annular pipe, and the specific shape can be an arc-shaped or polygonal annular pipe. In this example, it is further preferred to be a rectangular annular pipe, which increases the outer wall area of the branch pipe 63, thereby increasing the heat exchange area and improving the heat exchange effect. In other embodiments, the branch pipe 63 can be formed by a plurality of parallel pipes, and the ends of the parallel pipes are liquid-connected.
[0031] The heat exchange tube 6 also includes a connecting tube 64 connected to the branch tube 63, and the connecting tube 64 extends from the inside of the hydrogen storage chamber 111 to the outside of the hydrogen storage chamber 111 to avoid the elastic partition structure 2. The connecting tube 64 of this example extends from the inside of the hydrogen storage chamber 111 to the rear end space 13, so that most of the heat exchange tube 6 can be arranged in the hydrogen storage container, and only the liquid inlet 61, the liquid outlet 62 and the necessary length of the pipeline near the liquid inlet and outlet are arranged outside the hydrogen storage container 1, which simplifies the structure of the hydrogen storage container and makes the exterior of the hydrogen storage container 1 more concise and easy to maintain.
[0032] A bracket 7 is also provided at the bottom of the hydrogen storage container 1. The bracket 7 is welded to the bottom of the hydrogen storage container 1 and is used to fix the hydrogen storage device. The brackets 7 are evenly distributed on both sides of the hydrogen storage container 1 to bear the weight, and there are four brackets 7 in number.
[0033] The heat exchange medium in the heat exchange tube 6 is water. In other embodiments, it can also be other fluids that can transfer heat. When the hydrogen storage device needs to release hydrogen, hot water flows into the heat exchange tube 6 through the liquid inlet 61 of the heat exchange tube 6, heats the hydrogen storage material, and then flows out through the liquid outlet 62 of the heat exchange tube 6. Through the structural design of the heat exchange tube 6 (i.e., the branch pipe 63 of the annular structure), the contact area and contact time between the hydrogen storage material and the hot water are effectively increased, which promotes the release of hydrogen from the hydrogen storage device. Conversely, when the hydrogen storage device needs to absorb hydrogen, cooling water is introduced into the liquid inlet 61 of the heat exchange tube 6 to promote the hydrogen storage device to absorb hydrogen.
[0034] Although the present invention is specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that the remaining undescribed portions are prior art, and that various changes made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims shall fall within the scope of protection of the present invention.
Claims
1. A fixed hydrogen storage device, characterized in that: It comprises a hydrogen storage container and at least one elastic partition structure arranged in the hydrogen storage container, the hydrogen storage container is provided with a functional cavity, the elastic partition structure divides the functional cavity into a plurality of mutually independent hydrogen storage cavities, the hydrogen storage cavities are filled with hydrogen storage materials, and the elastic partition structure is used to absorb the stress of the hydrogen storage material expanding due to hydrogen absorption by elastic force.
2. A fixed hydrogen storage device according to claim 1, characterized in that: The elastic partition structure includes a first partition plate, a second partition plate and an elastic member arranged between the first partition plate and the second partition plate. The first partition plate and the second partition plate are used to withstand the expansion stress of the hydrogen storage material and transfer the expansion stress to the elastic member, thereby absorbing the expansion stress by relying on the elastic force of the deformation of the elastic member.
3. A fixed hydrogen storage device according to claim 2, characterized in that: The first partition plate and the second partition plate are arranged at intervals along the up-down direction, and the elastic member is evenly arranged between the first partition plate and the second partition plate to prevent the first partition plate and / or the second partition plate from being tilted due to expansion stress.
4. A fixed hydrogen storage device according to claim 2 or 3, characterized in that: The elastic member is a spring or a spring sheet, the first partition plate and the second partition plate are parallel to each other, and the deformation direction of the elastic member is perpendicular to the direction of the first partition plate and the second partition plate.
5. A fixed hydrogen storage device according to claim 1, characterized in that: It also includes a heat exchange tube that passes through each hydrogen storage cavity. A portion of the heat exchange tube is inserted between the hydrogen storage materials to provide heat or dissipate heat for the hydrogen storage materials to absorb and release hydrogen. The heat exchange tube is provided with a branch pipe in the hydrogen storage cavity to increase the heat exchange area.
6. A fixed hydrogen storage device according to claim 5, characterized in that: The branch pipe of the heat exchange pipe is an arc-shaped or polygonal annular pipe.
7. A fixed hydrogen storage device according to claim 5, characterized in that: The heat exchange tube also includes a connecting tube connected to the branch tube, and the connecting tube extends from inside the hydrogen storage chamber to outside the hydrogen storage chamber to avoid the elastic partition structure.
8. A fixed hydrogen storage device according to claim 7, characterized in that: The hydrogen storage container includes a front end for supplying hydrogen gas in and out, and the other end of the hydrogen storage container relative to the front end is a rear end. At least one support plate is provided in the hydrogen storage container, and the support plate is arranged between the rear end and the front end. A rear end space is formed between the rear end of the hydrogen storage container and the support plate close to the rear end, and the connecting pipe extends to the rear end space to avoid the elastic partition structure.
9. A fixed hydrogen storage device according to claim 1, characterized in that: The hydrogen storage container includes a front end for supplying hydrogen in and out, the other end of the hydrogen storage container relative to the front end is the rear end, two spaced support plates are provided in the hydrogen storage container, the two support plates are spaced in the direction from the rear end to the front end, the space between the two support plates in the hydrogen storage container forms the functional cavity, a rear end space is formed between the rear end of the hydrogen storage container and the support plate close to it, a front end space is formed between the front end of the hydrogen storage container and the support plate close to it, a gas manifold is provided in the front end space, one end of the gas manifold is connected to the functional cavity, and the other end forms a hydrogen inlet and outlet; it also includes a heat exchange tube, the heat exchange tube extends back and forth in the front and rear directions, and the liquid inlet and liquid outlet of the heat exchange tube are respectively arranged at positions close to the front end space of the hydrogen storage container.