A magnesium-based solid-state hydrogen storage and delivery device

Abstract

The utility model provides a kind of magnesium-based solid hydrogen storage and transport equipment, it is related to hydrogen storage device technical field, including tank body, multiple hydrogen storage units, hydrogen conveying pipeline and two oil connectors;Wherein hydrogen storage material is encapsulated in independent hydrogen storage pipe and constitutes hydrogen storage unit, hydrogen storage pipe both ends are limited in the front pipe plate hole and rear pipe plate hole of the both ends of tank body.This hydrogen storage and transport equipment hydrogen storage unit is independently fixed in tank body, so that the internal space of tank body is in sealed state, the liquid guide oil for temperature control of hydrogen storage unit can circulate in the cavity in tank body, so that hydrogen storage unit can independently realize the storage and release of hydrogen, and single hydrogen storage unit is damaged, the rest hydrogen storage unit will not be affected, improve the reliability and safety of hydrogen storage and transport equipment, damaged hydrogen storage unit can be removed and repaired separately, improve the maintainability and repair flexibility of equipment;Filling port is located in the outside of equipment as a whole, ensure the safety in production and manufacturing process.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen storage device technology, specifically to a magnesium-based solid hydrogen storage and transportation device. Background Technology

[0002] Hydrogen is a clean and efficient energy source with high energy density and environmentally friendly characteristics. It is a crucial carrier for achieving a green and low-carbon transition in energy consumption and an important component of the future energy system. However, hydrogen storage and transportation face technological challenges. Hydrogen storage and transportation technology is a key link in hydrogen energy utilization and also the biggest obstacle hindering its large-scale application.

[0003] Currently, hydrogen storage and transportation methods mainly include high-pressure gaseous hydrogen storage, liquid hydrogen storage and transportation, solid-state hydrogen storage, and organic liquid hydrogen storage. These methods suffer from several drawbacks, such as small storage capacity, high pressure, heavy transportation equipment, poor safety, and high energy consumption. Solid-state hydrogen storage utilizes solid hydrogen storage materials to store and release hydrogen through chemical reactions, offering advantages such as high storage density, safety, reliability, and long service life. Therefore, solid-state hydrogen storage technology has become a current research hotspot.

[0004] Because magnesium-based solid hydrogen storage materials expand and contract during hydrogen absorption and desorption, most publicly available magnesium-based solid hydrogen storage devices currently use materials directly filled into an integral shell. The storage material is in direct contact with the outer wall of heat exchange tubes located within this shell, which contain a flowing heat-conducting medium. This makes regular inspection and maintenance of the equipment impossible. Damage to the internal piping cannot be repaired, rendering the entire device unusable. Furthermore, the welding process following the filling of the magnesium-based storage material poses a safety risk of ignition, as magnesium is the primary component of the material. Utility Model Content

[0005] In view of this, the main objective of this utility model is to propose a magnesium-based solid hydrogen storage and transportation device. When the magnesium-based solid hydrogen storage and transportation device is working, the hydrogen storage unit transports hydrogen through a hydrogen guide pipe with distributed hydrogen permeable holes. The hydrogen guide pipe and the hydrogen storage pipe are coaxially arranged to ensure uniform hydrogen distribution in all directions, thereby improving the synchronicity of hydrogen absorption and desorption reactions of the hydrogen storage material and the efficiency of hydrogen absorption and desorption.

[0006] To achieve the above objectives, this utility model proposes a magnesium-based solid hydrogen storage and transportation device, comprising: a tank, multiple hydrogen storage units, a hydrogen delivery pipeline, and two oil-liquid connectors. The tank body includes a cylindrical body, with multiple front tube sheet holes and multiple rear tube sheet holes respectively provided at both ends of the cylindrical body. The number of front tube sheet holes and rear tube sheet holes are the same, and the front tube sheet holes and rear tube sheet holes are aligned one by one. The hydrogen storage unit includes a hydrogen storage tube, a hydrogen delivery tube, and a connecting joint. The connecting joint is fixed to the end of the hydrogen storage tube. The hydrogen delivery tube is disposed inside the hydrogen storage tube, and its end is connected to the connecting joint. The hydrogen delivery tube has uniformly distributed hydrogen permeation holes. The hydrogen storage tube is filled with hydrogen storage material, which is located outside the hydrogen delivery tube. The two ends of the hydrogen storage tube are respectively confined to holes in the front tube sheet and holes in the rear tube sheet. The hydrogen delivery pipeline is connected to the connection joints of all hydrogen storage units, and both oil connection joints are connected to the tank body.

[0007] Furthermore, the cylinder is provided with a front end plate and a rear end plate at both ends, and the front tube plate hole and the rear tube plate hole are respectively opened on the front end plate and the rear end plate, wherein the diameter of the front tube plate hole is smaller than the diameter of the rear tube plate hole.

[0008] Furthermore, the hydrogen storage tube has a head end and a tail end at its two ends, which are respectively confined within the front tube sheet hole and the rear tube sheet hole. The tail end of the hydrogen storage tube is provided with a tail end hole, and an end plug is provided in the tail end hole. The end plug is threaded into the tail end hole.

[0009] Furthermore, a sealing plate is fixed at the tail end of the hydrogen storage tube, and the tail end hole is formed on the sealing plate.

[0010] Furthermore, the head end of the hydrogen storage tube is connected to a reducer, the two ends of which are a large-diameter end and a small-diameter end, respectively. The large-diameter end of the reducer is fixedly connected to the head end of the hydrogen storage tube, and the connecting joint is connected to the small-diameter end of the reducer.

[0011] Furthermore, the hydrogen delivery pipeline includes a hydrogen valve assembly and multiple hydrogen delivery branch pipes. The hydrogen valve assembly is equipped with a hydrogen delivery connector at its end. All hydrogen delivery branch pipes are connected to the hydrogen valve assembly. Each hydrogen delivery branch pipe is connected to multiple hydrogen delivery connecting pipes, and each hydrogen delivery connecting pipe is connected to a connecting connector.

[0012] Furthermore, the hydrogen storage units are arranged in rows, with at least one hydrogen storage unit in each row, and the connection joints of all hydrogen storage units in the same row are connected to the same hydrogen transmission branch pipe through the connection joints.

[0013] Furthermore, all hydrogen delivery branches are arranged vertically and in parallel.

[0014] Furthermore, the two oil connectors are an oil inlet connector and an oil outlet connector, respectively. The oil inlet connector is connected to the lower part of the front end plate, and an oil outlet conduit is connected to the upper outer wall of the cylinder. The oil outlet connector is located at the end of the oil outlet conduit.

[0015] Furthermore, the hydrogen storage tube and the hydrogen delivery tube are coaxially arranged.

[0016] The beneficial effects of this magnesium-based solid hydrogen storage and transportation device are: (1) The magnesium-based solid hydrogen storage and transportation equipment includes a tank, multiple hydrogen storage units, hydrogen delivery pipelines, and two oil connectors; wherein the hydrogen storage material is encapsulated in an independent hydrogen storage tube to form a hydrogen storage unit, and the two ends of the hydrogen storage tube are limited to the front tube plate holes and the rear tube plate holes at both ends of the tank. This allows all hydrogen storage units to be independently fixed in the tank and the internal space of the tank to be sealed. The guide oil used for temperature control of the hydrogen storage unit can circulate in the cavity inside the tank. This allows individual hydrogen storage units to independently realize the storage and release of hydrogen. If a single hydrogen storage unit is damaged, the other hydrogen storage units will not be affected. This can greatly improve the reliability and safety of the hydrogen storage and transportation equipment. Furthermore, the damaged hydrogen storage unit can be disassembled and repaired separately, thereby improving the maintainability and maintenance flexibility of the hydrogen storage and transportation equipment.

[0017] (2) The head end and tail end of the hydrogen storage tube of the magnesium-based solid hydrogen storage and transportation device are respectively located in the front tube plate hole and the rear tube plate hole. The tail end of the hydrogen storage tube is provided with a tail end hole, and an end plug is provided in the tail end hole. Because the hydrogen storage material has certain flammable properties, the tail end hole is located outside the device. The tail end hole can be used to fill the hydrogen storage material during the assembly process. After the hydrogen storage material is filled, the end plug can be sealed by threaded connection. This can achieve the effect of filling the hydrogen storage material after the overall manufacturing of the device, ensuring safety in the production process; it can also avoid the problem of welding and sealing after filling the hydrogen storage material in traditional hydrogen storage devices, avoiding the risk of the hydrogen storage material being ignited during the welding process.

[0018] (3) When the magnesium-based solid hydrogen storage and transportation equipment is working, the hydrogen storage unit transports hydrogen through a hydrogen guide pipe with hydrogen permeable holes. The hydrogen guide pipe and the hydrogen storage pipe are coaxially set to ensure that the hydrogen is evenly distributed in all directions, reduce the distance between the hydrogen storage material and the hydrogen guide pipe, thereby reducing the hydrogen movement path. This improves the synchronicity of the hydrogen absorption and desorption reaction of the hydrogen storage material in the hydrogen storage and transportation equipment, and can also improve the hydrogen absorption and desorption efficiency of the hydrogen storage and transportation equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the magnesium-based solid hydrogen storage and transportation device in this embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional view of the magnesium-based solid hydrogen storage and transportation device in an embodiment of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the cylinder and front end plate of the magnesium-based solid hydrogen storage and transportation device in this embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the cylinder and the rear end plate of the magnesium-based solid hydrogen storage and transportation device in this embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the overall structure of the hydrogen storage unit of the magnesium-based solid hydrogen storage and transportation device in this embodiment of the present invention.

[0025] Figure 6 This is a cross-sectional view of the hydrogen storage unit of the magnesium-based solid hydrogen storage and transportation device in an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures: 100 - Tank body; 110 - Cylinder body; 120 - Front end plate; 130 - Rear end plate; 200-hydrogen storage unit; 210 - Connecting connector; 220 - End plate; 230 - Filter; 240 - Reducer; 250 - Hydrogen storage tube; 260 - Hydrogen delivery tube; 270 - Sealing plate; 280 - End plug; 300 - Hydrogen valve assembly; 400 - Oil connector. Detailed Implementation

[0027] 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.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] Please see Figures 1 to 6 One embodiment of this utility model provides a magnesium-based solid hydrogen storage and transportation device, which includes a tank 100, multiple hydrogen storage units 200, hydrogen transmission pipelines, and two oil connectors 400.

[0031] The tank body 100 includes a cylindrical body 110 with a cylindrical structure. The two ends of the cylindrical body 110 are respectively provided with a plurality of front tube sheet holes and a plurality of rear tube sheet holes. The number of front tube sheet holes and rear tube sheet holes are the same, and the front tube sheet holes and rear tube sheet holes are aligned one by one. Specifically, the two ends of the cylindrical body 110 are respectively provided with a front end plate 120 and a rear end plate 130, and the front tube sheet holes and rear tube sheet holes are respectively opened on the front end plate 120 and the rear end plate 130.

[0032] The hydrogen storage unit 200 includes a hydrogen storage tube 250, a hydrogen delivery tube 260, and a connecting joint 210. The connecting joint 210 is fixed to the end of the hydrogen storage tube 250. The hydrogen delivery tube 260 is disposed inside the hydrogen storage tube 250, and its end is connected to the connecting joint 210. Hydrogen permeability holes are distributed on the side of the hydrogen delivery tube 260. The hydrogen storage tube 250 is filled with a hydrogen storage material. In this embodiment, the hydrogen storage material is a magnesium-based hydrogen storage material. At a certain temperature (within the hydrogen storage temperature range), the hydrogen storage material can react with hydrogen to absorb hydrogen. After absorbing hydrogen, the hydrogen storage material can release hydrogen at a higher temperature (within the hydrogen release temperature range). The hydrogen storage material is located outside the hydrogen delivery tube 260, that is, in the gap between the outer wall of the hydrogen delivery tube 260 and the inner wall of the hydrogen storage tube 250. The hydrogen permeability holes allow hydrogen to pass through the hydrogen delivery tube 260. The hydrogen storage pipe 250 and the hydrogen delivery pipe 260 are coaxially arranged; both ends of the hydrogen storage pipe 250 are respectively confined within the holes of the front tube sheet and the rear tube sheet; the hydrogen delivery pipeline is connected to the connection joints 210 of all hydrogen storage units 200. The coaxial arrangement of the hydrogen delivery pipe 260 and the hydrogen storage pipe 250 ensures uniform hydrogen distribution in all directions, reduces the distance between the hydrogen storage material and the hydrogen delivery pipe 260, thereby reducing the hydrogen movement path. This improves the synchronicity of the hydrogen absorption and desorption reaction of the hydrogen storage material in the hydrogen storage and transportation equipment, and also improves the hydrogen absorption and desorption efficiency of the hydrogen storage and transportation equipment.

[0033] Both oil connectors 400 are connected to the tank 100. In this embodiment, the two oil connectors 400 are an oil inlet connector and an oil outlet connector, respectively. The oil inlet connector is connected to the lower part of the front end plate 120. An oil outlet conduit is connected to the upper outer wall of the cylinder 110. One end of the oil outlet conduit is connected to the outer wall of the cylinder 110, and the other end extends to the front end plate 120 of the cylinder 110. The oil outlet connector is located at the end of the oil outlet conduit near the front end plate 120. The oil inlet connector and the oil outlet connector are used to connect to an oil temperature control circulation device.

[0034] The oil temperature control circulation device is used to introduce heat transfer oil into the tank 100 through the inlet connector and allow it to flow out through the outlet connector, thus circulating the heat transfer oil between the tank 100 and the oil temperature control circulation device. Furthermore, by controlling the temperature of the circulating heat transfer oil, the device controls the temperature of the hydrogen storage materials in all hydrogen storage units 200, thereby controlling the absorption and emission of hydrogen by the storage materials. It should be noted that the oil temperature control circulation device is existing technology, and its structure will not be described in detail here.

[0035] In a preferred embodiment, the hydrogen storage tube 250 has a head end and a tail end, respectively, which are confined within the holes in the front and rear tube sheets. The tail end of the hydrogen storage tube 250 has a tail end hole, within which an end plug 280 is threaded. A sealing plate 270 is fixed to the tail end of the hydrogen storage tube 250, and the tail end hole is located on the sealing plate 270. The tail end hole can be used to fill hydrogen storage material during assembly. After the hydrogen storage material is filled, the end plug 280 can be threaded to seal the tail end hole. This achieves the effect of filling the hydrogen storage material after the entire device is manufactured, avoiding the need for welding and sealing after filling the hydrogen storage material in traditional hydrogen storage devices, and preventing the risk of the hydrogen storage material being ignited during welding.

[0036] In a preferred embodiment, the diameter of the front tube sheet hole of the tank 100 is smaller than that of the rear tube sheet hole. This allows the hydrogen storage tube 250 to be extracted from the rear end after it is disconnected from the hydrogen delivery pipeline at the head end. Understandably, the heat transfer oil inside the tank 100 is extracted in advance before the hydrogen storage tube 250 is extracted.

[0037] In a preferred embodiment, a reducer 240 is connected to the head end of the hydrogen storage pipe 250. The reducer 240 has a trumpet-shaped structure, with a large-diameter end and a small-diameter end at its two ends. The large-diameter end of the reducer 240 is fixedly connected to the head end of the hydrogen storage pipe 250, and a connecting connector 210 is connected to the small-diameter end of the reducer 240. An end plate 220 is also provided at the small-diameter end of the reducer 240, which is used to seal the connecting connector 210 to the small-diameter end of the reducer 240. A filter 230 is also provided between the connecting connector 210 and the hydrogen conduit 260 to prevent particles of the pulverized hydrogen storage material from entering the hydrogen valve assembly 300.

[0038] In a preferred embodiment, the hydrogen delivery pipeline includes a hydrogen valve assembly 300 and multiple hydrogen delivery branch pipes. The hydrogen valve assembly 300 has a hydrogen delivery connector at its end. All hydrogen delivery branch pipes are connected to the hydrogen valve assembly 300. Each hydrogen delivery branch pipe is connected to multiple hydrogen delivery connecting pipes, and each hydrogen delivery connecting pipe is connected to a connecting connector 210. The hydrogen storage units 200 are arranged in rows, with at least one hydrogen storage unit 200 in each row. The connecting connectors 210 of all hydrogen storage units 200 in the same row are connected to the same hydrogen delivery branch pipe. All hydrogen delivery branch pipes are arranged vertically and parallel to each other. It should be noted that each connecting connector 210 is equipped with a control valve (not shown in the figure). The control valve can control the opening and closing of the connecting connector 210, thereby allowing independent control of the hydrogen storage and emission process of each hydrogen storage unit 200.

[0039] The working process of this magnesium-based solid hydrogen storage and transportation equipment is as follows: The oil temperature control circulation device controls the temperature of the hydrogen storage material in the hydrogen storage unit 200 within the hydrogen storage temperature range. Hydrogen is introduced into all hydrogen storage units 200 through the hydrogen delivery pipeline. The hydrogen reacts with the hydrogen storage material in the hydrogen storage unit 200 to produce hydrides, which are used to absorb and store hydrogen. When hydrogen needs to be released, the oil temperature control circulation device raises the temperature of the hydrogen storage material in the hydrogen storage unit 200 to the hydrogen release temperature. At this time, the hydrides in the hydrogen storage material decompose and release hydrogen. The released hydrogen is discharged through the hydrogen conduit 260 and the hydrogen delivery pipeline, thereby completing the hydrogen storage and release process.

[0040] This magnesium-based solid hydrogen storage and transportation equipment allows all hydrogen storage units 200 to be independently fixed within the tank 100. This enables each individual hydrogen storage unit 200 to independently store and release hydrogen. Furthermore, if one hydrogen storage unit 200 is damaged, the remaining hydrogen storage units 200 will not be affected. This greatly improves the reliability and safety of the hydrogen storage and transportation equipment. Damaged hydrogen storage units 200 can also be disassembled and repaired individually, thereby improving the maintainability and maintenance flexibility of the hydrogen storage and transportation equipment.

[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A magnesium-based solid-state hydrogen storage and transportation device, characterized in that, include: Tank (100), multiple hydrogen storage units (200), hydrogen delivery pipeline and two oil connectors (400); The tank (100) includes a cylindrical body (110), and the two ends of the cylindrical body (110) are respectively provided with a plurality of front tube sheet holes and a plurality of rear tube sheet holes. The number of front tube sheet holes and rear tube sheet holes are the same, and the front tube sheet holes and rear tube sheet holes are aligned one by one. The hydrogen storage unit (200) includes a hydrogen storage tube (250), a hydrogen delivery tube (260), and a connecting joint (210). The connecting joint (210) is fixed to the end of the hydrogen storage tube (250). The hydrogen delivery tube (260) is disposed inside the hydrogen storage tube (250). The end of the hydrogen delivery tube (260) is connected to the connecting joint (210). The hydrogen delivery tube (260) is provided with uniformly distributed hydrogen permeation holes. The hydrogen storage tube (250) is filled with hydrogen storage material. The two ends of the hydrogen storage tube (250) are respectively confined within the holes of the front tube sheet and the rear tube sheet. The hydrogen delivery pipeline is connected to the connection joints (210) of all hydrogen storage units (200), and the two oil connection joints (400) are both connected to the tank body (100).

2. The magnesium-based solid hydrogen storage and transportation device according to claim 1, characterized in that, The cylinder (110) is provided with a front end plate (120) and a rear end plate (130) at both ends. The front tube plate hole and the rear tube plate hole are respectively opened on the front end plate (120) and the rear end plate (130), wherein the diameter of the front tube plate hole is smaller than the diameter of the rear tube plate hole.

3. The magnesium-based solid hydrogen storage and transportation device according to claim 1, characterized in that, The hydrogen storage tube (250) has a head end and a tail end at its two ends, which are respectively located in the front tube sheet hole and the rear tube sheet hole. The tail end of the hydrogen storage tube (250) is provided with a tail end hole, and an end plug (280) is provided in the tail end hole. The end plug (280) is threaded into the tail end hole.

4. A magnesium-based solid hydrogen storage and transportation device according to claim 3, characterized in that, The hydrogen storage tube (250) is fixed with a sealing plate (270) at its tail end, and the tail end hole is opened on the sealing plate (270).

5. A magnesium-based solid hydrogen storage and transportation device according to claim 3, characterized in that, The head end of the hydrogen storage tube (250) is connected to a reducer (240), the two ends of the reducer (240) are a large diameter end and a small diameter end, respectively. The large diameter end of the reducer (240) is fixedly connected to the head end of the hydrogen storage tube (250), and the connecting joint (210) is connected to the small diameter end of the reducer (240).

6. A magnesium-based solid hydrogen storage and transportation device according to claim 1, characterized in that, The hydrogen delivery pipeline includes a hydrogen valve assembly (300) and multiple hydrogen delivery branch pipes. All hydrogen delivery branch pipes are connected to the hydrogen valve assembly (300). Each hydrogen delivery branch pipe is connected to multiple hydrogen delivery connecting pipes, and each hydrogen delivery connecting pipe is connected to a connecting joint (210).

7. A magnesium-based solid hydrogen storage and transportation device according to claim 6, characterized in that, The hydrogen storage units (200) are arranged in rows, with each row having at least one hydrogen storage unit (200). The connection joints (210) of all hydrogen storage units (200) in the same row are connected to the same hydrogen transmission branch pipe through the connection joints (210).

8. A magnesium-based solid hydrogen storage and transportation device according to claim 6, characterized in that, All hydrogen delivery branches are arranged vertically and parallel to each other.

9. A magnesium-based solid hydrogen storage and transportation device according to claim 2, characterized in that, The two oil connectors (400) are an oil inlet connector and an oil outlet connector, respectively. The oil inlet connector is connected to the lower part of the front end plate (120), and the upper outer wall of the cylinder (110) is connected to an oil outlet conduit. The oil outlet connector is located at the end of the oil outlet conduit.

10. A magnesium-based solid-state hydrogen storage and transportation device according to claim 1, characterized in that, The hydrogen storage tube (250) and the hydrogen delivery tube (260) are coaxially arranged.

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