A hydrogen storage device capable of uniform heat exchange and temperature measurement

Abstract

This utility model discloses a hydrogen storage device capable of uniform heat exchange and temperature measurement, comprising a hydrogen storage module, a heat exchange module, and a temperature measurement module. The hydrogen storage module includes a hydrogen storage tank, within which a solid hydrogen storage component is installed. The solid hydrogen storage component includes a gas guide pipe and several layers of solid hydrogen storage material. The heat exchange module includes a heat exchange medium sleeve surrounding the hydrogen storage tank. One end of the heat exchange medium sleeve has a heat exchange medium inlet, and the top of the sleeve near the other end has a heat exchange medium outlet. A flow stabilizing plate, which is a mesh plate with multiple small holes, is fixedly installed inside the heat exchange chamber near the heat exchange medium inlet. The temperature measurement module includes a hydrogen temperature sensor for detecting the temperature of hydrogen gas inside the gas guide pipe and several hydrogen storage material temperature sensors for detecting the temperature at different radial positions of the solid hydrogen storage material layers. Compared with the prior art, this utility model has the following advantages: it achieves uniform heat exchange and can measure the temperature of hydrogen gas and hydrogen storage materials.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen charging and discharging equipment technology, and in particular to a hydrogen storage device capable of uniform heat exchange and temperature measurement. Background Technology

[0002] Hydrogen energy, as a clean and high-energy-density energy carrier, can promote global renewable and sustainable development. Its widespread application relies on efficient, safe, and large-scale storage and transportation technologies. Traditional compressed hydrogen and liquid hydrogen pose safety risks and high energy consumption problems. Magnesium-based hydrogen storage materials have a mass hydrogen storage density and a volumetric hydrogen storage density of 7.6 wt.% and 110 g / L, respectively. They can transport hydrogen at near-ambient temperature and pressure, offering high safety and energy efficiency. Furthermore, magnesium reserves are abundant and low in cost, making them the preferred storage and transportation carrier for hydrogen metallurgy, hydrogen refueling stations, and other fields.

[0003] In practice, magnesium-based materials are commonly used to fill hydrogen storage tanks for storage and transportation. The heat exchange structure is a key component connecting the material's reactivity characteristics with practical application requirements. However, different heat exchange structures can affect heat exchange efficiency, thus impacting the material's hydrogen absorption and desorption rates. For example, patent application CN118959861A discloses a magnesium-based hydride solid hydrogen storage tank with energy recovery capabilities. It heats the tank by wrapping an electric heating strip around the outer wall, requiring no external heat source and offering rapid heating, but suffers from slow heat dissipation, uneven heating, and a low safety factor. Patent application CN117006410A discloses a metal hydride hydrogen storage tank with heat exchange fins and its preparation method. It utilizes heat exchange fins to reduce the contact thermal resistance of the hydrogen storage tank, thereby improving heat exchange performance, but the internal heat exchange control of the storage tank is relatively weak.

[0004] Therefore, heat exchange methods incorporating heat exchange media are more suitable for the heat exchange structure of magnesium-based hydrogen storage tanks in terms of efficiency, safety, and dynamic adaptability. For example, patent application CN118328293A discloses a solid-state hydrogen storage tank and an integrated hydrogen storage device. It designs a hydrogen storage tank with straight heat exchange tubes passing through each hydrogen storage alloy block within the tank body, allowing the hydrogen storage material to be tightly bonded to the heat exchange tubes, increasing the thermal conductivity of the hydrogen storage material. However, it uses multiple surrounding heat exchange tubes for temperature control inside the tank. Due to the wall thickness of these multiple heat exchange tubes, it is equivalent to having several layers of heat transfer media, resulting in low heat transfer efficiency and affecting the performance. To address the poor heat exchange effect of external surrounding tubes, patent application CN222480191U proposes a magnesium-based solid-state hydrogen storage tank. It designs a heating method where heat transfer oil directly contacts the hydrogen storage tank, effectively improving the system's heat exchange efficiency. However, it cannot control the flow rate of the heat transfer oil, resulting in uneven heating.

[0005] Furthermore, the hydrogen absorption and desorption reactions of magnesium-based materials are extremely sensitive to temperature (the optimal range is 150-350℃), and the actual heat transfer effect of the heat exchange medium (such as whether it uniformly covers the material and whether the target temperature is reached) needs to be verified through temperature data. Without temperature test records, it is impossible to determine whether the medium flow rate and temperature parameters match the material's reaction requirements. This could lead to incomplete material reactions due to local temperatures not reaching the threshold, resulting in hydrogen storage capacity consistently lower than the design value; or excessively high temperatures could trigger side reactions (such as the generation of impurity gases), reducing hydrogen purity and affecting the lifespan of downstream hydrogen-using equipment (such as fuel cells). Currently, there are no reports of testing the hydrogen temperature inside the hydrogen storage tank or the temperature at different locations on the hydrogen storage material. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hydrogen storage device that can achieve uniform heat exchange and temperature measurement, so as to achieve uniform heat exchange and temperature measurement of hydrogen and hydrogen storage materials.

[0007] This utility model is achieved through the following technical solution: A hydrogen storage device capable of uniform heat exchange and temperature measurement includes a hydrogen storage module and a heat exchange module, and the hydrogen storage device further includes a temperature measurement module. The hydrogen storage module includes a horizontal hydrogen storage tank, and a solid hydrogen storage component is provided in the inner cavity of the hydrogen storage tank. The solid hydrogen storage component includes a gas guide pipe and several solid hydrogen storage material layers fitted outside the gas guide pipe. The heat exchange module includes a heat exchange medium sleeve disposed around the hydrogen storage tank. The space between the heat exchange medium sleeve and the hydrogen storage tank forms a heat exchange cavity. One end of the heat exchange medium sleeve is provided with a heat exchange medium inlet, and the top of the heat exchange medium sleeve is provided with a heat exchange medium outlet near the other end. A flow stabilizing plate is fixedly disposed inside the heat exchange cavity near the heat exchange medium inlet. The flow stabilizing plate is a mesh plate with multiple small holes and is located in the annular cavity formed by the heat exchange medium sleeve and the hydrogen storage tank. The temperature measurement module includes a hydrogen temperature sensor for detecting the temperature of hydrogen in the gas delivery pipe and several hydrogen storage material temperature sensors for detecting the temperature at different radial positions of the solid hydrogen storage material layer.

[0008] As a preferred embodiment of the above-mentioned hydrogen storage device, the temperature measurement module further includes an inlet temperature sensor and an outlet temperature sensor for detecting the temperature of the solid hydrogen storage material layer near the heat exchange medium inlet and the heat exchange medium outlet, respectively.

[0009] As a preferred embodiment of the above-mentioned hydrogen storage device, the gas guide pipe includes a gas guide pipe body extending axially along the inner cavity of the hydrogen storage tank. The gas guide pipe body is a mesh pipe body with multiple gas guide holes. The solid hydrogen storage material layer is formed by pressing solid hydrogen storage material. Several solid hydrogen storage material layers are sequentially spaced along the axial direction of the gas guide pipe body, and adjacent solid hydrogen storage material layers are separated by a buffer material layer.

[0010] As a preferred embodiment of the above-mentioned hydrogen storage device, the gas guide pipe is closed at one end and open at the other end. A limiting end plate is provided around the closed end of the gas guide pipe. The limiting end plate at the closed end of the gas guide pipe abuts against the stepped surface of the inner cavity of the hydrogen storage tank. An elastic support structure is provided around the open end of the gas guide pipe. Several solid hydrogen storage material layers are elastically pressed onto the limiting end plate through the elastic support structure.

[0011] As a preferred embodiment of the above-mentioned hydrogen storage device, the inner cavity of the hydrogen storage tank has a circular cross-section, the gas guide pipe is coaxially arranged with the inner cavity of the hydrogen storage tank, and the solid hydrogen storage material layer is a disc-shaped structure with a central hole, which is fitted onto the gas guide pipe through the central hole.

[0012] As a preferred embodiment of the aforementioned hydrogen storage device, a number of hydrogen storage material temperature sensors are disposed at the middle section of the heat exchange medium sleeve along the axial direction, and the number of hydrogen storage material temperature sensors are distributed circumferentially around the heat exchange medium sleeve. The detection ends of the number of hydrogen storage material temperature sensors extend radially inward into the inner cavity of the hydrogen storage tank to different depths, so that the detection ends of the number of hydrogen storage material temperature sensors are in contact with the solid hydrogen storage material layer at different radial positions.

[0013] As a preferred embodiment of the above-mentioned hydrogen storage device, the hydrogen temperature sensor is installed at one end of the heat exchange medium sleeve, and the detection end of the hydrogen temperature sensor extends axially into the gas guide pipe inside the hydrogen storage tank.

[0014] As a preferred embodiment of the above-mentioned hydrogen storage device, the inlet temperature sensor and the outlet temperature sensor are respectively installed on the side wall of the heat exchange medium sleeve, and are respectively close to the heat exchange medium inlet and the heat exchange medium outlet. The detection ends of the inlet temperature sensor and the outlet temperature sensor extend radially inward into the inner cavity of the hydrogen storage tank and are in contact with the solid hydrogen storage material layer.

[0015] As a preferred embodiment of the above-mentioned hydrogen storage device, one end of the hydrogen storage tank is detachably connected to a flange-type blind plate, which seals the open end of the inner cavity of the hydrogen storage tank. The flange-type blind plate has a through hole communicating with the inner cavity of the hydrogen storage tank. An inlet / outlet connector is provided on the outside of the through hole of the flange-type blind plate, and a filter screen is provided on the inside of the through hole of the flange-type blind plate.

[0016] As a preferred embodiment of the above-mentioned hydrogen storage device, the inner and outer rings of the flow stabilizer plate are fixed to the outer wall of the hydrogen storage tank and the inner wall of the heat exchange medium sleeve, respectively.

[0017] This invention has the following advantages over the prior art: This utility model provides a hydrogen storage device capable of uniform heat exchange and temperature measurement: First, the flow stabilizing plate inside the heat exchange chamber not only plays a role in stabilizing the flow, balancing the medium flow velocity, avoiding local flow deviation, and improving heat exchange uniformity and efficiency; it also supports the hydrogen storage tank and enhances the structural strength of the equipment. Secondly, its added temperature measurement modules in multiple areas can accurately monitor the temperature of different parts of the hydrogen and solid hydrogen storage material layer, effectively verify the heat exchange effect, and capture subtle temperature changes. Furthermore, the elastic support structure of its hydrogen storage module can effectively buffer the stress of hydrogen absorption and expansion of the hydrogen storage material, and the filter screen can intercept solid particles to ensure system safety. Finally, it is compatible with a variety of solid hydrogen storage materials such as magnesium-based and titanium-based materials, as well as various heat exchange media such as heat transfer oil and water, making it widely applicable and meeting the high-efficiency and stable operation requirements of demanding hydrogen storage scenarios. Attached Figure Description

[0018] Figure 1 This is a front sectional view of the present invention.

[0019] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0020] Figure 3 yes Figure 1 AA cross-section view.

[0021] Figure 4 This is the front view of this utility model.

[0022] Figure 5 This is a perspective view of the present invention.

[0023] Figure 6 This is a perspective view of the present invention from another angle.

[0024] Figure 7 The image shows the simulation results of the heat exchange medium flow rate of the product in the example.

[0025] Figure 8 This is a simulation result of the heat exchange medium flow rate of the comparison product.

[0026] Numbering on the map: 1. Flange-type blind flange, 1-1. Pressure plate, 1-2. Filter screen, 1-3. Inlet and outlet gas connectors, 1-4. Clamping screws, 2. Limiting spring, 3. Gas guide pipe, 4. Hydrogen storage tank, 5. Heat exchange medium sleeve, 5-1. Heat exchange medium inlet, 5-2. Heat exchange medium outlet, 6. Solid hydrogen storage material layer, 7. Buffer material layer, 8. Flow stabilizer plate, 9. Base, 10. Fixing bolts, 11. Clips, 12. Hydrogen temperature sensor, 13. Outlet temperature sensor, 14. First hydrogen storage material temperature sensor, 15. Second hydrogen storage material temperature sensor, 16. Third hydrogen storage material temperature sensor, 17. Inlet temperature sensor, 18. Threaded sleeve. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0028] See Figures 1 to 8 This embodiment discloses a hydrogen storage device capable of uniform heat exchange and temperature measurement, including a hydrogen storage module and a heat exchange module. The hydrogen storage device also includes a temperature measurement module.

[0029] The hydrogen storage module includes a horizontal hydrogen storage tank 4 with a circular cross-section. One end of the hydrogen storage tank 4 is detachably connected to a flange-type blind plate 1. The flange-type blind plate 1 and the hydrogen storage tank 4 are detachably connected via a flange connection, and a sealing ring is used to seal the gap between them. The flange-type blind plate 1 seals the open end of the inner cavity of the hydrogen storage tank 4. The flange-type blind plate 1 has a through hole communicating with the inner cavity of the hydrogen storage tank 4. An inlet / outlet connector 1-3 is provided on the outside of the through hole of the flange-type blind plate 1. The inlet / outlet connector 1-3 is used to connect to an external hydrogen charging pipeline system or a hydrogen discharging pipeline system to realize hydrogen charging or discharging. A filter screen 1-2 is provided inside the through hole of the flange-type blind plate 1. The filter screen 1-2 is pressed into the inside of the flange-type blind plate 1 by a pressure plate 1-1. The pressure plate 1-1 and the inside of the flange-type blind plate 1 are fixedly connected by a clamping screw 1-4. The filter screen 1-2 is used to intercept solid particles generated by the pulverization of solid hydrogen storage material in the inner cavity of the hydrogen storage tank 4, so as to prevent them from entering the hydrogen transmission pipeline during the hydrogen release process and causing blockage or wear.

[0030] The hydrogen storage tank 4 has a solid hydrogen storage assembly inside its cavity. The solid hydrogen storage assembly includes a gas guide pipe 3 and several solid hydrogen storage material layers 6 fitted around the gas guide pipe 3. The gas guide pipe 3 includes a gas guide pipe body extending axially along the inner cavity of the hydrogen storage tank 4. The gas guide pipe body 3 is coaxially arranged with the inner cavity of the hydrogen storage tank 4. The gas guide pipe body 3 is a mesh tube with multiple gas guide holes for hydrogen to pass through. The solid hydrogen storage material layers 6 are formed by pressing solid hydrogen storage materials, including but not limited to magnesium-based, titanium-based, and rare earth-based metal hydrogen storage materials. The solid hydrogen storage material layers 6 are a disc-shaped structure with a central hole. The solid hydrogen storage material layers 6 are fitted onto the gas guide pipe body 3 through the central hole. Several solid hydrogen storage material layers 6 are fitted sequentially at intervals along the axial direction of the gas guide pipe body 3. Adjacent solid hydrogen storage material layers 6 are separated by a buffer material layer 7. The buffer material layer 7 is made of foam material with good thermal conductivity. The gas delivery pipe 3 is closed at one end and open at the other. A limiting end plate is provided around the closed end of the gas delivery pipe 3, abutting against the stepped surface of the inner cavity of the hydrogen storage tank 4. An elastic support structure is provided around the open end of the gas delivery pipe 3. This elastic support structure can be a limiting spring 2. One end of the limiting spring 2 presses against the flange-type blind plate 1, and the other end presses against the outermost solid hydrogen storage material layer 6. The limiting spring 2 elastically presses several solid hydrogen storage material layers 6 against the limiting end plate. The limiting spring 2 is used to axially limit the several solid hydrogen storage material layers 6 and can also act as a buffer when the solid hydrogen storage material layers 6 absorb hydrogen and expand, thereby reducing stress concentration in the inner cavity of the hydrogen storage tank 4.

[0031] The heat exchange module includes a heat exchange medium sleeve 5 disposed around the hydrogen storage tank 4. The heat exchange medium sleeve 5 can be welded and fixed together with the hydrogen storage tank 4, and is supported by a base 9. A clip 11 is installed on the base 9, and the clip 11 is connected to the base 9 by a fixing bolt 10. The entire hydrogen storage device is fixed by the clip 11, which is threaded to the base 9, being fitted around the heat exchange medium sleeve 5. The space between the heat exchange medium sleeve 5 and the hydrogen storage tank 4 forms a heat exchange cavity. One end of the heat exchange medium sleeve 5 is provided with a heat exchange medium inlet 5-1, and the top of the heat exchange medium sleeve 5 near the other end is provided with a heat exchange medium outlet 5-2. The heat exchange medium inlet 5-1 and the heat exchange medium outlet 5-2 are used for the entry and exit of the heat exchange medium, respectively. The flow of the heat exchange medium in the heat exchange cavity is bottom inlet and top outlet. The heat exchange medium must meet the requirements of high heat transfer efficiency, good stability, and strong compatibility with the materials of the related components in contact with the phase. For example, heat transfer oil, water, ethylene glycol aqueous solution, fluorinated liquid and other media can be used. A flow stabilizing plate 8 is fixedly installed inside the heat exchange cavity near the heat exchange medium inlet 5-1. The flow stabilizing plate 8 is an annular mesh plate with multiple small holes. The flow stabilizing plate 8 is located in the annular cavity formed by the heat exchange medium sleeve 5 and the hydrogen storage tank 4. The inner and outer rings of the flow stabilizing plate 8 are welded and fixed to the outer wall of the hydrogen storage tank 4 and the inner wall of the heat exchange medium sleeve 5, respectively. The small holes on the flow stabilizing plate 8 are used to balance the flow of the heat exchange medium and avoid local flow deviation.

[0032] The temperature measurement module includes a hydrogen temperature sensor 12 for detecting the temperature of hydrogen in the gas delivery pipe 3, several hydrogen storage material temperature sensors for detecting the temperature at different radial positions of the solid hydrogen storage material layer 6, and an inlet temperature sensor 17 and an outlet temperature sensor 13 for detecting the temperature of the solid hydrogen storage material layer 6 near the heat exchange medium inlet 5-1 and the heat exchange medium outlet 5-2, respectively.

[0033] A hydrogen temperature sensor 12 is installed at one end of the heat exchange medium sleeve 5. The sensing end of the hydrogen temperature sensor 12 extends axially into the gas guide pipe 3 inside the hydrogen storage tank 4 to detect the temperature of the hydrogen inside the gas guide pipe 3. The sensing end of the hydrogen temperature sensor 12 extends from the closed end of the gas guide pipe into the gas guide pipe 3, and the sensing end of the hydrogen temperature sensor 12 does not directly contact the solid hydrogen storage material to avoid interference from the solid hydrogen storage material on the hydrogen temperature measurement.

[0034] Several hydrogen storage material temperature sensors are positioned at the midpoint of the heat exchange medium sleeve 5 along the axial direction, and are circumferentially distributed around the heat exchange medium sleeve 5. The probes of these sensors extend radially inward to different depths into the inner cavity of the hydrogen storage tank 4, ensuring that the probes contact the solid hydrogen storage material layer 6 at different radial positions. In this embodiment, three hydrogen storage material temperature sensors are used: a first hydrogen storage material temperature sensor 14, a second hydrogen storage material temperature sensor 15, and a third hydrogen storage material temperature sensor 16. These sensors are evenly distributed circumferentially around the heat exchange medium sleeve 5, and their probes contact the central, outer, and inner regions of the solid hydrogen storage material layer 6, respectively, to detect the temperature of these regions.

[0035] The inlet temperature sensor 17 and the outlet temperature sensor 13 are respectively installed on the side wall of the heat exchange medium sleeve 5, and are close to the heat exchange medium inlet 5-1 and the heat exchange medium outlet 5-2 respectively. The detection ends of the inlet temperature sensor 17 and the outlet temperature sensor 13 extend radially inward into the inner cavity of the hydrogen storage tank 4 and are in contact with the solid hydrogen storage material layer 6.

[0036] Each temperature sensor can be a type K armored thermocouple, which has high measurement accuracy and is suitable for a temperature range of 0℃ to 450℃, facilitating the accurate capture of subtle temperature changes inside the tank. The specific installation method for each temperature sensor is as follows: a threaded sleeve 18 with an internally threaded hole is welded onto the heat exchange medium sleeve 5. The external threaded connector of each temperature sensor is threadedly connected to the corresponding internal threaded hole of the threaded sleeve 18, thereby achieving the installation of the temperature sensor.

[0037] The hydrogen storage device provided in this embodiment achieves stable heat exchange during the hydrogen storage process through the coordinated operation of three main modules, ensuring balanced flow and uniform heat exchange of the heat exchange medium. Simultaneously, it can accurately monitor the temperature of different regions of the hydrogen and the solid hydrogen storage material layer 6, capturing subtle temperature changes. Furthermore, it can axially limit the movement of several solid hydrogen storage material layers 6, buffering the stress during hydrogen absorption and expansion, reducing stress concentration within the tank, and improving system safety. This hydrogen storage device is suitable for applications requiring high hydrogen storage efficiency and temperature monitoring, ensuring efficient and stable hydrogen storage.

[0038] To verify the role of the flow stabilizer plate 8 in the hydrogen storage device, the hydrogen storage device including the flow stabilizer plate 8 in this embodiment is used as the embodiment product, and the hydrogen storage device without the flow stabilizer plate 8 is used as the control product. Numerical flow rate simulation tests are conducted on the embodiment product and the control product respectively to comprehensively compare the differences between the two in terms of flow field distribution, pressure fluctuation and heat exchange effect.

[0039] The simulation test results for the product in the example are described below: The heat exchange medium is selected as heat transfer oil with a kinematic viscosity of 0.0001 m² / s and a density of 850 kg / m³, to simulate typical operating conditions in medium- and high-temperature hydrogen storage scenarios. The flow rate at the heat exchange medium inlet 5-1 is set to 0.5 m³ / h, the pressure at the heat exchange medium inlet 5-1 is 0.3 MPa, and the heat exchange medium outlet 5-2 is at atmospheric pressure, thereby establishing stable flow boundary conditions.

[0040] The simulation process employs Computational Fluid Dynamics (CFD) based on the Reynolds time-averaged equation (RANS) and the standard k-ε turbulence model to numerically simulate the flow state of the heat transfer medium within the heat transfer medium sleeve 5. A structured mesh is used, with mesh refinement applied near the flow stabilizer 8 and in the heat transfer medium inlet 5-1 region to improve the accuracy of local flow field calculations. Mesh independence verification ensures that the number of meshes has no significant impact on the calculation results. Iterative calculations continue until the residual converges to 1e. -6 The following section describes the velocity distribution of the flow field. Figure 7 The simulation results for the heat exchange medium flow rate of the product in this embodiment are shown in the figure. The simulation results show that the heat exchange medium enters the heat exchange cavity from the heat exchange medium inlet 5-1 at the right end of the heat exchange medium sleeve 5. It first impacts the flow stabilizer 8. Under the obstruction of the flow stabilizer 8 and the diversion effect of the small holes, the high-speed jet originally concentrated near the axis of the heat exchange medium inlet 5-1 is dispersed into multiple uniform streams, which diffuse outwards along the annular cavity after passing through the small holes of the flow stabilizer 8. In the solid hydrogen storage material layer 6, which fills the corresponding heat exchange area (the middle and left sections of the heat exchange cavity), the medium flow rate distribution shows obvious uniformity, with a gentle axial velocity gradient and no obvious eddies or backflow phenomena. Meanwhile, the medium flow rate at the top of the hydrogen storage tank 4 is approximately 0.0025 m / s, and the medium flow rate at the bottom of the hydrogen storage tank 4 is approximately 0.0024 m / s. The axial flow rate of the heat exchange medium inside the heat exchange medium sleeve 5 is consistent.

[0041] The simulation test results for the control example product are described below: The test conditions were the same as those for the products in the example.

[0042] Figure 8As shown in the simulation results of the heat exchange medium flow rate for the comparison product, when the flow stabilizer plate 8 is not installed in the hydrogen storage device, the heat exchange medium enters the heat exchange cavity from the heat exchange medium inlet 5-1 at the right end of the heat exchange medium sleeve 5. Due to the lack of an effective flow diversion and guiding structure, the flow of the heat exchange medium in the heat exchange cavity exhibits obvious non-uniformity. The flow rate of the heat exchange medium near the heat exchange medium inlet 5-1 is significantly higher, forming a local high-speed jet, while the flow rate in the area far from the heat exchange medium inlet 5-1 is lower or even stagnant, and disordered eddies and backflows exist in the flow field. At the same time, the medium flow rate at the top of the hydrogen storage tank 4 is about 0.0022 m / s, and the medium flow rate at the bottom of the hydrogen storage tank 4 is about 0.0016 m / s, indicating a large difference in the axial flow velocity of the heat exchange medium inside the heat exchange medium sleeve 5.

[0043] Table 1 shows the simulation results of the heat exchange medium flow rate for the example product and the control example product: Table 1 A comparison of the simulation results of the product in the example and the product in the control example shows that the flow stabilizer plate 8 plays a crucial role in the hydrogen storage device. Its flow and pressure stabilization function ensures the uniform flow and pressure stability of the heat exchange medium, thereby improving the heat exchange effect.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydrogen storage device capable of uniform heat exchange and temperature measurement, comprising a hydrogen storage module and a heat exchange module, characterized in that: The hydrogen storage device also includes a temperature measurement module; The hydrogen storage module includes a horizontal hydrogen storage tank (4), and a solid hydrogen storage component is provided in the inner cavity of the hydrogen storage tank (4). The solid hydrogen storage component includes a gas guide pipe (3) and several solid hydrogen storage material layers (6) fitted outside the gas guide pipe (3). The heat exchange module includes a heat exchange medium sleeve (5) disposed around the hydrogen storage tank (4). The space between the heat exchange medium sleeve (5) and the hydrogen storage tank (4) forms a heat exchange cavity. One end of the heat exchange medium sleeve (5) is provided with a heat exchange medium inlet (5-1), and the top of the heat exchange medium sleeve (5) near the other end is provided with a heat exchange medium outlet (5-2). A flow stabilizing plate (8) is fixedly disposed in the heat exchange cavity near the heat exchange medium inlet (5-1). The flow stabilizing plate (8) is a mesh plate with multiple small holes. The flow stabilizing plate (8) is located in the annular cavity formed by the heat exchange medium sleeve (5) and the hydrogen storage tank (4). The temperature measurement module includes a hydrogen temperature sensor (12) for detecting the temperature of hydrogen in the gas delivery pipe (3) and several hydrogen storage material temperature sensors for detecting the temperature at different radial positions of the solid hydrogen storage material layer (6).

2. The hydrogen storage device capable of uniform heat exchange and temperature measurement as described in claim 1, characterized in that: The temperature measurement module also includes an inlet temperature sensor (17) and an outlet temperature sensor (13) for detecting the temperature of the solid hydrogen storage material layer (6) near the heat exchange medium inlet (5-1) and the heat exchange medium outlet (5-2), respectively.

3. The hydrogen storage device capable of uniform heat exchange and temperature measurement as described in claim 1, characterized in that: The gas guide tube (3) includes a gas guide tube (3) body extending axially along the inner cavity of the hydrogen storage tank (4). The gas guide tube (3) body is a mesh tube body with multiple gas guide holes. The solid hydrogen storage material layer (6) is formed by pressing solid hydrogen storage material. Several solid hydrogen storage material layers (6) are sequentially spaced along the axial direction of the gas guide tube (3) body. Adjacent solid hydrogen storage material layers (6) are separated by a buffer material layer (7).

4. A hydrogen storage device capable of uniform heat exchange and temperature measurement as described in claim 3, characterized in that: The gas guide tube (3) is closed at one end and open at the other end. A limiting end plate is provided around the closed end of the gas guide tube (3). The limiting end plate of the closed end of the gas guide tube (3) abuts against the stepped surface of the inner cavity of the hydrogen storage tank (4). An elastic support structure is provided around the open end of the gas guide tube (3). Several solid hydrogen storage material layers (6) are elastically pressed onto the limiting end plate through the elastic support structure.

5. A hydrogen storage device capable of uniform heat exchange and temperature measurement as described in claim 3, characterized in that: The inner cavity of the hydrogen storage tank (4) is circular. The gas guide pipe (3) is coaxially arranged with the inner cavity of the hydrogen storage tank (4). The solid hydrogen storage material layer (6) is a disc-shaped structure with a central hole. The solid hydrogen storage material layer (6) is fitted onto the gas guide pipe (3) through the central hole.

6. A hydrogen storage device capable of uniform heat exchange and temperature measurement as described in claim 2, characterized in that: Several hydrogen storage material temperature sensors are set at the middle section of the heat exchange medium sleeve (5) along the axial direction, and several hydrogen storage material temperature sensors are distributed circumferentially around the heat exchange medium sleeve (5). The detection ends of several hydrogen storage material temperature sensors extend radially into the inner cavity of the hydrogen storage tank (4) to different depths, so that the detection ends of several hydrogen storage material temperature sensors are in contact with the solid hydrogen storage material layer (6) at different radial positions.

7. A hydrogen storage device capable of uniform heat exchange and temperature measurement as described in claim 2, characterized in that: The hydrogen temperature sensor (12) is located at one end of the heat exchange medium sleeve (5), and the detection end of the hydrogen temperature sensor (12) extends axially into the gas guide pipe (3) inside the hydrogen storage tank (4).

8. A hydrogen storage device capable of uniform heat exchange and temperature measurement as described in claim 2, characterized in that: The inlet temperature sensor (17) and outlet temperature sensor (13) are respectively installed on the side wall of the heat exchange medium sleeve (5) and are respectively close to the heat exchange medium inlet (5-1) and heat exchange medium outlet (5-2). The detection ends of the inlet temperature sensor (17) and outlet temperature sensor (13) extend radially inward into the inner cavity of the hydrogen storage tank (4) and are in contact with the solid hydrogen storage material layer (6).

9. A hydrogen storage device capable of uniform heat exchange and temperature measurement as described in claim 1, characterized in that: One end of the hydrogen storage tank (4) is detachably connected to a flange-type blind plate (1). The open end of the inner cavity of the hydrogen storage tank (4) is sealed by the flange-type blind plate (1). The flange-type blind plate (1) has a through hole that communicates with the inner cavity of the hydrogen storage tank (4). An inlet / outlet connector (1-3) is provided on the outside of the through hole of the flange-type blind plate (1), and a filter screen (1-2) is provided on the inside of the through hole of the flange-type blind plate (1).

10. A hydrogen storage device capable of uniform heat exchange and temperature measurement as described in claim 1, characterized in that: The inner and outer rings of the flow stabilizer (8) are fixed to the outer wall of the hydrogen storage tank (4) and the inner wall of the heat exchange medium sleeve (5), respectively.

Images