Heat exchange water jacket suitable for solid hydrogen storage bottle made of aluminum alloy

Abstract

The utility model discloses a heat exchange water jacket suitable for an aluminum alloy solid hydrogen storage bottle. The heat exchange water jacket comprises a heat exchange water jacket assembly. The split type heat exchange water jacket assembly is adopted, the water jacket is divided into an upper layer and a lower layer to be buckled on the bottle body of the solid hydrogen storage bottle, the bottle body of the solid hydrogen storage bottle is well limited and fixed, and the heat exchange water jacket assembly can also serve as an accessory structural component of the solid hydrogen storage bottle and plays a role in protecting the bottle body and facilitating carrying and mounting; the limiting butt joint assembly comprises a positioning insertion block and a U-shaped positioning socket, a positioning abutting block is movably arranged in the U-shaped positioning socket, and the positioning insertion block is inserted into the U-shaped positioning socket, so that alignment and fixation of the upper-layer water jacket shell and the lower-layer water jacket shell are achieved; the body of the positioning insertion block located in the U-shaped positioning socket can be clamped, limited and fixed through the positioning abutting block, so that it is guaranteed that the upper-layer water jacket shell and the lower-layer water jacket shell are not prone to loosening or relative deviation after being aligned, and the fastening effect on the solid hydrogen storage bottle is guaranteed.

Description

Technical Field

[0001] This utility model relates to a hot water exchange jacket, specifically a hot water exchange jacket suitable for solid hydrogen storage cylinders made of aluminum alloy, and belongs to the field of solid hydrogen storage technology. Background Technology

[0002] The hydrogen storage material in solid-state hydrogen storage cylinders releases or absorbs heat during hydrogen charging and discharging. To ensure stable charging and discharging under design conditions, heat exchange needs to be effectively addressed. Heat exchange solutions for solid-state hydrogen storage cylinders include water bath heat exchange, water jacket heat exchange, and air circulation heat exchange. Each method has its advantages and disadvantages. Considering the large amount of heat absorbed and released by solid-state hydrogen storage materials, each of these heat exchange methods has its own advantages and disadvantages: due to the low specific heat capacity and low heat transfer efficiency of air, air circulation heat exchange requires a large specific surface area in the storage cylinder and is not suitable for high-flow-rate hydrogen charging and discharging; water bath heat exchange requires immersing the storage cylinder in water or other heat exchange liquids, which is complex and prone to pitting corrosion; therefore, water jacket heat exchange is commonly used for large-capacity solid-state hydrogen storage cylinders or applications with high charging and discharging flow rates.

[0003] In the prior art, such as the solid-state hydrogen storage device disclosed in CN221504700U, the device includes: a heat exchange tank with an inlet, an outlet, and several hydrogen storage cylinder placement cavities, the outer side of which is filled with heat exchange liquid; a heat conduction component disposed inside the hydrogen storage cylinder placement cavities; a single hydrogen storage cylinder placed inside the heat conduction component, having a nozzle extending out of the hydrogen storage cylinder placement cavities; a gas delivery component connected to the nozzle; and a liquid circulation component, with its two ends connected to the inlet and outlet respectively via delivery pipes, for circulating heat exchange liquid to the heat exchange tank; the inner and outer sides of the heat conduction component are in close contact with the outer wall of the single hydrogen storage cylinder and the inner wall of the hydrogen storage cylinder placement cavities, respectively. This device effectively solves the problem of corrosion of metal hydride hydrogen storage cylinders by heat exchange liquid after prolonged use due to the need to directly immerse the metal hydride hydrogen storage cylinders in the water bath device, thereby effectively extending the service life of the metal hydride hydrogen storage cylinders. Existing water jacket designs typically use a formed aluminum tube as the cylindrical inner cavity for housing the solid hydrogen storage cylinder, which is welded to the outer shell. This design has the following problems:

[0004] 1. Poor heat exchange effect: In order to facilitate the installation and removal of solid hydrogen storage cylinders, the water jacket is usually designed as a straight cylinder with an inner diameter larger than the outer diameter of the solid hydrogen storage cylinder. The solid hydrogen storage cylinder and the inner wall of the water jacket cannot be fully fitted and contacted, which affects the heat exchange effect.

[0005] 2. Poor fixation effect: The solid hydrogen storage cylinder has no effective constraint in the inner cavity of the water jacket and can only be fixed by its own weight or axial constraint, which is not suitable for use in scenarios with large bumps and vibrations.

[0006] 3. Poor manufacturing consistency and high cost of water jackets: Integral water jackets require multiple sealing welds between the aluminum tube serving as the inner cavity and the outer shell to form heat exchange fluid channels. The quality of the welding significantly affects the channel forming effect, resulting in low manufacturing efficiency and high cost. Summary of the Invention

[0007] The purpose of this invention is to provide a heat exchange sleeve suitable for solid hydrogen storage cylinders made of aluminum alloy in order to solve at least one of the above-mentioned technical problems.

[0008] The present invention achieves the above objectives through the following technical solution: a heat exchange jacket suitable for solid hydrogen storage cylinders made of aluminum alloy, comprising a heat exchange jacket assembly, the heat exchange jacket assembly comprising an upper water jacket shell and a lower water jacket shell, a semi-circular interlayer water channel being provided on the opposite side of the upper water jacket shell and the lower water jacket shell, and a limit docking assembly being provided on both sides of the upper water jacket shell and the lower water jacket shell.

[0009] The limiting docking assembly includes a positioning plug and a U-shaped positioning socket. The positioning plug is fixedly connected to both sides of the upper water jacket shell, and the U-shaped positioning socket is fixedly connected to both sides of the lower water jacket shell. The bottom end of the positioning plug is inserted into the U-shaped positioning socket, and a positioning stop is movably installed inside the U-shaped positioning socket.

[0010] As a further improvement of this utility model: the upper water jacket shell and the lower water jacket shell are provided with a number of cavities, and the cavities are arranged in a one-to-one correspondence with the semi-circular interlayer water channels. A number of water inlet pipes are connected to one side of the upper water jacket shell and the lower water jacket shell, and the water inlet pipes are connected to each cavity respectively. The other end of the water inlet pipe is connected to a quick-connect interface.

[0011] As a further improvement of this utility model: the inner circle depth of the semi-circular interlayer water channel is less than the radius of the solid hydrogen storage bottle, and the semi-circular interlayer water channel has a certain deformation space.

[0012] As a further improvement of this utility model: the outer circumference of the semi-circular interlayer waterway is connected to several temperature-conducting plates that are evenly distributed at equal intervals.

[0013] As a further improvement of this utility model: the upper water jacket shell and the lower water jacket shell are provided with a manifold and several water outlet pipes on the other side, and the water outlet pipes are respectively connected to each cavity, and the other end of each water outlet pipe is connected to the manifold.

[0014] As a further improvement of this utility model: a rubber gasket is embedded in the part of the semi-circular interlayer water channel used to house the shoulder of the solid hydrogen storage bottle, and a limit ring is connected to the part of the semi-circular interlayer water channel used to house the tail of the solid hydrogen storage bottle.

[0015] As a further improvement of this utility model: the outer side of the positioning plug is provided with an outer bevel, the inner side of the U-shaped positioning socket is provided with a movable slot, the positioning block is movably placed in the movable slot, the seat of the U-shaped positioning socket is threaded through and connected with a fixing bolt, and one end of the fixing bolt located in the movable slot is rotatably connected to the positioning block.

[0016] The beneficial effects of this utility model are:

[0017] 1) The water exchange jacket assembly of this utility model includes an upper water jacket shell and a lower water jacket shell. The upper water jacket shell and the lower water jacket shell are provided with a semi-circular interlayer water channel on their opposite sides. The water exchange jacket assembly is a split type, which can divide the water jacket into upper and lower layers and fasten it to the body of the solid hydrogen storage bottle. The docking of the upper water jacket shell and the lower water jacket shell can make the semi-circular interlayer water channel fully contact the surface of the solid hydrogen storage bottle, so as to achieve better limiting and fixing of the solid hydrogen storage bottle body. The water exchange jacket assembly can also serve as an auxiliary structural component of the solid hydrogen storage bottle, which plays a role in protecting the bottle body and facilitating transportation and installation.

[0018] 2) The limiting docking component set in this utility model includes a positioning plug and a U-shaped positioning socket. A positioning stop is movably arranged in the U-shaped positioning socket. By inserting the positioning plug into the U-shaped positioning socket, the upper water jacket shell and the lower water jacket shell can be aligned and fixed. The positioning stop can clamp and limit the positioning plug body located in the U-shaped positioning socket to ensure that the upper water jacket shell and the lower water jacket shell are not easy to loosen or shift relative after alignment, thus ensuring the fastening effect of the solid hydrogen storage cylinder. Attached Figure Description

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

[0020] Figure 2 This is a side view of the hot water jacket structure of this utility model;

[0021] Figure 3 This is a partial structural diagram of the lower water jacket shell of this utility model;

[0022] Figure 4 This is a partial cross-sectional structural diagram of the lower water jacket shell of this utility model;

[0023] Figure 5 This is a schematic diagram of the unfastened state of the limiting docking component of this utility model;

[0024] Figure 6 This is a schematic diagram of the fastening structure of the limiting docking assembly of this utility model;

[0025] Figure 7This is a schematic diagram of the hydrogen charging and activation method for heat exchange of solid hydrogen storage cylinders according to this utility model.

[0026] Figure 8 This is a schematic diagram of the gas supply control system of this utility model;

[0027] In the diagram: 1. Upper water jacket shell; 11. Positioning plug; 12. Outer bevel; 13. Cavity; 14. Temperature conductive plate; 2. Lower water jacket shell; 21. U-shaped positioning socket; 22. Movable slot; 23. Positioning stop; 24. Fixing bolt; 3. Water outlet pipe; 4. Manifold; 5. Water inlet pipe; 6. Quick-connect interface; 7. Semi-circular interlayer water channel; 8. Rubber gasket; 9. Limiting ring. Detailed Implementation

[0028] 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.

[0029] Example 1, as Figures 1 to 6 As shown, a heat exchange jacket suitable for solid hydrogen storage cylinders made of aluminum alloy includes a heat exchange jacket assembly. The heat exchange jacket assembly includes an upper water jacket shell 1 and a lower water jacket shell 2. A semi-circular interlayer water channel 7 is provided on the opposite side of the upper water jacket shell 1 and the lower water jacket shell 2. Limiting docking components are provided on both sides of the upper water jacket shell 1 and the lower water jacket shell 2. The split-type heat exchange jacket assembly can divide the water jacket into upper and lower layers and fasten it to the body of the solid hydrogen storage cylinder. The docking of the upper water jacket shell 1 and the lower water jacket shell 2 can make the semi-circular interlayer water channel 7 fully contact the surface of the solid hydrogen storage cylinder body, so as to achieve better limiting and fixing of the solid hydrogen storage cylinder body. The heat exchange jacket assembly can also serve as an auxiliary structural component of the solid hydrogen storage cylinder, playing a role in protecting the cylinder body and facilitating transportation and installation.

[0030] The limiting docking assembly includes a positioning plug 11 and a U-shaped positioning socket 21. The positioning plug 11 is fixedly connected to both sides of the upper water jacket shell 1, and the U-shaped positioning socket 21 is fixedly connected to both sides of the lower water jacket shell 2. The bottom end of the positioning plug 11 is inserted into the U-shaped positioning socket 21. A positioning stop 23 is movably provided in the U-shaped positioning socket 21. By inserting the positioning plug 11 into the U-shaped positioning socket 21, the upper water jacket shell 1 and the lower water jacket shell 2 can be aligned and fixed. The positioning stop 23 can clamp and limit the positioning plug 11 located in the U-shaped positioning socket 21 to ensure that the upper water jacket shell 1 and the lower water jacket shell 2 are not easy to loosen or shift relative to each other after alignment, thus ensuring the fastening effect of the solid hydrogen storage cylinder.

[0031] Example 2, in addition to all the technical features included in Example 1, also includes:

[0032] The upper water jacket shell 1 and the lower water jacket shell 2 have several cavities 13 inside. Each cavity 13 is corresponding to a semi-circular interlayer water channel 7. Several water inlet pipes 5 are connected to one side of the upper water jacket shell 1 and the lower water jacket shell 2. Each water inlet pipe 5 is connected to each cavity 13. The other end of the water inlet pipe 5 is connected to a quick-connect interface 6, which can be connected to an external water pipe to allow cold water to be introduced into the cavity 13 so that each solid hydrogen storage cylinder can be individually heat exchanged.

[0033] The inner circle depth of the semi-circular interlayer water channel 7 is slightly smaller than the radius of the solid hydrogen storage bottle body, and the semi-circular interlayer water channel 7 has a certain deformation space, which can be slightly deformed under pressure to adapt to the solid hydrogen storage bottle body and increase the contact area.

[0034] The outer circumference of the semi-circular interlayer water channel 7 is connected to several temperature-conducting plates 14 that are evenly distributed at equal intervals, which can improve the temperature conduction effect and thus improve the heat exchange efficiency of the solid hydrogen storage bottle.

[0035] On the other side of the upper water jacket shell 1 and the lower water jacket shell 2, there are manifolds 4 and several outlet pipes 3. The outlet pipes 3 are connected to each cavity 13 respectively, and the other end of each outlet pipe 3 is connected to the manifolds 4. Water in each cavity 13 can be discharged through the outlet pipes 3 and collected and discharged through the manifolds 4, thus realizing the circulation of hot water.

[0036] The semi-circular interlayer water channel 7 is used to house the shoulder of the solid hydrogen storage bottle, and a rubber gasket 8 is embedded in it. The semi-circular interlayer water channel 7 is used to house the tail of the solid hydrogen storage bottle, and a limiting ring 9 is connected to it. The rubber gasket 8 and the limiting ring 9 can play a multi-directional limiting role for the solid hydrogen storage bottle.

[0037] The outer side of the positioning plug 11 is provided with an outer inclined surface 12. The inner side of the U-shaped positioning socket 21 is provided with a movable slot 22. The positioning block 23 is movably locked in the movable slot 22. The seat of the U-shaped positioning socket 21 is threadedly connected with a fixing bolt 24. One end of the fixing bolt 24 located in the movable slot 22 is rotatably connected to the positioning block 23. The positioning block 23 can be moved by rotating the fixing bolt 24, so that the positioning block 23 can be firmly pressed against the outer inclined surface 12 of the positioning plug 11. While fixing the positioning plug 11, it can also have a downward pushing force on the positioning plug 11 based on the inclined surface contact, thereby ensuring that the upper water jacket shell 1 and the lower water jacket shell 2 can be firmly and tightly connected together.

[0038] Example 3, as Figure 7 and Figure 8 As shown, a hydrogen charging and activation method for solid hydrogen storage cylinders using a water jacket for heat exchange includes a water jacket for heat exchange. The method comprises four main subsystems: a gas supply control system, a hydrogen storage cylinder water jacket, a heating and cooling water circulation system, and a cylinder temperature monitoring system. To improve operational efficiency, additional subsystems such as automated control can be added, without altering the function of the four main subsystems. The hydrogen charging and activation method includes the following steps:

[0039] During activation, the solid hydrogen storage bottle is installed between the upper and lower water jackets. The upper and lower water jackets should preferably be made into a single-sided concave shape to fit the cylindrical surface of the bottle body, and be clamped by external force to ensure that the water jacket and the bottle body are fully in contact to achieve better heat exchange effect.

[0040] During the heating and vacuuming phase, the heating and cooling water circulation system provides circulating hot water to the upper and lower water jackets to heat the solid hydrogen storage cylinder to a sufficient temperature. Then, the gas control system evacuates the solid hydrogen storage cylinder to remove impurity gases. During the vacuuming process, the cylinder temperature monitoring system continuously monitors the cylinder temperature and uses the water circulation system to compensate for heat loss caused by the vacuuming process.

[0041] During the hydrogenation stage, the gas control system provides a continuous supply of hydrogen at a certain pressure to the solid hydrogen storage cylinder. The cylinder temperature is continuously monitored by the cylinder temperature monitoring system, and the circulating water temperature is adjusted in a timely manner to keep the solid hydrogen storage cylinder in a suitable temperature range, which is conducive to the continuous hydrogenation reaction.

[0042] The gas control system monitors the flow rate of hydrogen absorbed by the solid hydrogen storage cylinder. Once the preset hydrogen filling amount is reached, it can be determined that the hydrogen storage material in the solid hydrogen storage cylinder has been fully hydrogenated and has reached the activation conditions.

[0043] During hydrogen filling, cooling water can be directly used to cool the hydrogen storage cylinder through the water jacket, and the operation mode is the same as the hydrogenation stage.

[0044] The gas supply control system is responsible for providing vacuuming and hydrogen supply functions to the solid hydrogen storage cylinders in accordance with design requirements.

[0045] When evacuating, connect the vent to the vacuum pump and use the suction force of the vacuum pump to expel the gas from the solid hydrogen storage bottle.

[0046] During hydrogen supply, hydrogen is introduced through the hydrogen inlet and continuously supplied to the solid hydrogen storage cylinder to be activated under continuous monitoring of hydrogen pressure and flow rate through components such as pressure reducing valve, flow meter, and check valve.

[0047] The heating and cooling circulation system includes necessary components such as a cooling water source (e.g., a chiller), a heating water source (e.g., a water heater), a circulating water pump, and a three-way valve. A water storage tank can be added according to the water consumption, and a circulating water pump speed regulator can be added according to temperature control requirements.

[0048] Bottle temperature monitoring systems can use devices such as temperature sensors and infrared thermometers to display bottle temperature in real time.

[0049] Working principle: The water jacket is a split-type water exchanger assembly, which can be divided into upper and lower layers and fastened to the body of the solid hydrogen storage bottle. The docking of the upper water jacket shell 1 and the lower water jacket shell 2 allows the semi-circular interlayer water channel 7 to fully contact the surface of the solid hydrogen storage bottle, achieving good positioning and fixation of the solid hydrogen storage bottle. By inserting the positioning block 11 into the U-shaped positioning socket 21, the upper water jacket shell 1 and the lower water jacket shell 2 can be aligned and fixed. The positioning block 23 can clamp and limit the positioning block 11 located in the U-shaped positioning socket 21 to ensure that the upper water jacket shell 1 and the lower water jacket shell 2 are not easy to loosen or shift after alignment, thus ensuring the fastening effect of the solid hydrogen storage bottle.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat exchange jacket suitable for an aluminum alloy material solid hydrogen storage bottle, comprising a heat exchange jacket assembly, characterized in that: The heat exchange jacket assembly comprises an upper jacket shell (1) and a lower jacket shell (2), and the opposite sides of the upper jacket shell (1) and the lower jacket shell (2) are provided with semicircular interlayer water channels (7), and the two sides of the upper jacket shell (1) and the lower jacket shell (2) are provided with limiting butt joint assemblies; The limiting butt joint assembly comprises a positioning plug (11) and a U-shaped positioning socket (21), the positioning plug (11) is fixedly connected to the two sides of the upper jacket shell (1), the U-shaped positioning socket (21) is fixedly connected to the two sides of the lower jacket shell (2), the bottom end of the positioning plug (11) is inserted into the U-shaped positioning socket (21), and the U-shaped positioning socket (21) movably has a positioning block (23) arranged therein.

2. The heat exchange jacket of claim 1, wherein: A plurality of cavities (13) are formed in the upper jacket shell (1) and the lower jacket shell (2), the cavities (13) are arranged in one-to-one correspondence with the semicircular interlayer water channels (7), a plurality of water inlet pipes (5) are connected to one side of the upper jacket shell (1) and the lower jacket shell (2), the water inlet pipes (5) are respectively connected to each cavity (13), and the other end of the water inlet pipe (5) is connected with a quick plug interface (6).

3. Heat exchange jacket according to claim 1 or 2, characterized in that: The inner circle depth of the semicircular interlayer water channel (7) with a deformation space is smaller than the radius of the bottle body of the solid-state hydrogen storage bottle.

4. The heat exchange jacket of claim 1, wherein: A plurality of temperature guide sheets (14) are connected to the outer circle part of the semicircular interlayer water channel (7) and are evenly distributed at equal intervals.

5. The heat exchange jacket of claim 2, wherein: The other side of the upper jacket shell (1) and the lower jacket shell (2) is provided with a water collecting pipe (4) and a plurality of water outlet pipes (3), the water outlet pipes (3) are respectively connected to each cavity (13), and the other end of the water outlet pipe (3) is connected to the water collecting pipe (4).

6. The heat exchange jacket of claim 1, wherein: A rubber gasket (8) is embedded in the part of the semicircular interlayer water channel (7) for placing the bottle shoulder of the solid-state hydrogen storage bottle, and a limiting ring (9) is connected to the part of the semicircular interlayer water channel (7) for placing the bottle tail of the solid-state hydrogen storage bottle.

7. The heat exchange jacket of claim 1, wherein: An outer inclined surface (12) is arranged on the outer side of the positioning plug (11), an inner movable groove (22) is formed in the inner side of the U-shaped positioning socket (21), the positioning block (23) is movably clamped in the movable groove (22), and the seat body of the U-shaped positioning socket (21) is threadedly connected with a fixing bolt (24), and one end of the fixing bolt (24) located in the movable groove (22) is rotatably connected with the positioning block (23).

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