A kind of external heat exchange medium metal hydride storage tank

Abstract

The present invention discloses an external heat exchange medium metal hydride storage tank, including a tank body, the tank body including a tank body middle cavity, a tank body top cover and a tank body bottom cover, the side wall of the tank body top cover is provided with a hydrogen filling port and a hydrogen filling port valve, the side wall of the tank body bottom cover is provided with a hydrogen outlet and a hydrogen outlet valve; a plurality of heat conduction mechanisms are provided inside the tank body middle cavity, and the top and bottom ends of the heat conduction mechanisms extend into the tank body top cover and the tank body bottom cover respectively, heat dissipation acceleration mechanisms are provided on the tank body top cover and the tank body bottom cover and at both ends of the heat conduction mechanisms, and a connecting component is provided between the heat dissipation acceleration mechanism and the heat conduction mechanism; a wind leaf type heat dissipation mechanism is provided at one end of the heat dissipation acceleration mechanism away from the heat conduction mechanism. The present invention can improve the absorption efficiency of the heat in the tank body, and improve the ability of the hydrogen storage tank to dissipate heat out of the tank body, while avoiding the hidden dangers and risks caused by leakage of the heat exchange medium, and ensuring the stability of the tank body temperature and the safety of long-term use.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen energy storage tanks, and in particular to an external heat exchange medium metal hydride storage tank. Background Art

[0002] Hydrogen energy can be stored and transported, which is both the advantage of hydrogen energy and the main bottleneck of hydrogen energy application. Its high-density, low-cost and safe storage has always been a world-class problem. To make hydrogen energy widely used, it is necessary to develop efficient and convenient hydrogen storage technology. Hydrogen storage technology needs to consider the amount of hydrogen storage, the cost of raw materials, the difficulty of releasing hydrogen, whether temperature restrictions are required, the recycling characteristics of materials and the overall cost. Generally speaking, physical hydrogen storage technology is mature, and chemical hydrogen storage is more forward-looking.

[0003] External heat exchange medium metal hydride storage tank is a solid-state hydrogen storage technology that uses metal hydride as a hydrogen storage material to store hydrogen in solid materials. Unlike traditional liquid hydrogen storage technology, it can avoid the volatilization and leakage of hydrogen, and has a higher hydrogen storage density. It is one of the current research and development focuses. Compared with other hydrogen storage technologies, external heat exchange medium metal hydride storage tanks have the advantages of stable operation, high reliability, and good safety. Therefore, it has broad application prospects in the field of hydrogen energy applications. However, hydrogen storage is an exothermic process. Metal hydride hydrogen storage tanks will generate a certain amount of heat during the hydrogen storage process. This heat must be dissipated, and the existing metal hydride hydrogen storage tanks have no targeted improvements in heat dissipation, and the heat dissipation effect is insufficient.

[0004] For example, Chinese Patent No. 202210554704.8 discloses a metal hydride hydrogen storage tank, which includes a gas tank and a reaction tank. The gas tank includes a gas tank barrel, a mounting port is opened on the bottom surface of the gas tank barrel, and an air outlet is opened on the wall of the gas tank barrel; the reaction tank includes a reaction tank barrel with upper and lower openings, a first baffle, a bottom cover and a water pipe, etc., which has the characteristics of safety, high efficiency and low energy consumption. However, the above-mentioned metal hydride hydrogen storage tank still has the following shortcomings when used specifically: the metal hydride hydrogen storage tank lacks a heat dissipation mechanism, so it will have insufficient heat dissipation during the hydrogen storage process, and insufficient heat dissipation may cause the internal temperature of the metal hydride hydrogen storage tank to rise excessively, thereby affecting the performance and life of the hydrogen storage tank. At the same time, excessively high temperatures may cause the hydrogen stored in the metal hydride to be released, causing hydrogen to explode or burn, thereby bringing safety risks. Therefore, when using a metal hydride hydrogen storage tank, corresponding heat dissipation measures need to be taken to ensure the stability and safety of the internal temperature of the hydrogen storage tank.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] Due to factors such as expansion caused by hydrogen absorption and desorption of alloy powder and hydrogen corrosion, the heat exchange structure of the metal hydride hydrogen storage tank will inevitably have leakage points after long-term use, causing the cooling water to hydrolyze with the highly active metal hydride, emitting a large amount of hydrogen and heat, and even causing the hydrogen storage tank to explode. In view of the shortcomings of the prior art, the present invention provides an external heat exchange medium metal hydride storage tank, which has the advantages of improving the absorption efficiency of the heat in the tank body and improving the ability of the hydrogen storage tank to dissipate heat out of the tank body. More importantly, it solves the safety hazards of the built-in heat dissipation device of the metal hydride hydrogen storage tank in the prior art, ensuring that the metal hydride storage tank is safer and more reliable during long-term use.

[0008] (II) Technical solution

[0009] In order to achieve the above advantages of improving the absorption efficiency of heat in the tank body and improving the ability of the hydrogen storage tank to dissipate heat out of the tank body, the specific technical solutions adopted by the present invention are as follows:

[0010] A metal hydride storage tank for external heat exchange medium comprises a tank body, wherein the tank body comprises a tank body middle cavity, a tank body top cover is arranged at the top end of the tank body middle cavity, a tank body bottom cover is arranged at the bottom end of the tank body middle cavity, a hydrogen filling port is arranged on the side wall of the tank body top cover, a hydrogen filling port valve is arranged at the end of the hydrogen filling port, a hydrogen outlet is arranged on the side wall of the tank body bottom cover, and a hydrogen outlet valve is arranged at the end of the hydrogen outlet; a plurality of heat conduction mechanisms are arranged inside the tank body middle cavity, and the top and bottom ends of the heat conduction mechanisms extend into the tank body top cover and the tank body bottom cover respectively, heat dissipation acceleration mechanisms are arranged on the tank body top cover and the tank body bottom cover and at both ends of the heat conduction mechanisms, and a connecting component is arranged between the heat dissipation acceleration mechanism and the heat conduction mechanism; a fan-type heat dissipation mechanism is arranged at one end of the heat dissipation acceleration mechanism away from the heat conduction mechanism.

[0011] Furthermore, in order to prevent the tank body from deformation, resist high pressure, have stable chemical properties, and effectively resist the pressure of internal materials and the impact force of external space without deformation, the tank body is made of high-strength rigid composite metal material, and the tank body cavity is fixed to the tank body top cover and tank body bottom cover by connecting bolts and connecting nuts.

[0012] Furthermore, in order to fix the protective shell on the tank body, thereby protecting the safety of the components on the top and bottom of the tank body, and to enable the protective shell to have the ability to exchange gas to ensure the dissipation of heat, a protective shell is provided on the outside of the tank top cover and the tank bottom cover, and a plurality of air exchange holes are provided on the side wall of the protective shell; the protective shell is fixedly connected to the tank top cover and the tank bottom cover.

[0013] Furthermore, in order to increase the heat absorption area of ​​the heat-conducting metal rod, the heat-conducting mechanism includes a plurality of heat-conducting metal rods arranged inside the middle cavity of the tank body, spiral fins are sleeved on the outer sides of the heat-conducting metal rods, and both ends of the heat-conducting metal rods are connected to the heat dissipation acceleration mechanism through a connecting component.

[0014] Furthermore, in order to increase the heat absorption area of ​​the heat-conducting metal rod, thereby improving the heat absorption capacity and ensuring the stability and safety of the temperature in the tank, the heat-conducting mechanism also includes a connecting plate arranged on the side of the heat-conducting metal rod, one end of the connecting plate is connected to the heat-conducting metal rod through a screw, a dovetail groove is arranged inside the connecting plate, a fixing block is arranged inside the dovetail groove, and the fixing block is interference fit with the dovetail groove; one end of the fixing block away from the heat-conducting metal rod extends to the outside of the dovetail groove and is connected to a side plate, and a plurality of heat-conducting plates are arranged on the side wall of the side plate.

[0015] Furthermore, in order to introduce flowing air at the end of the heat-conducting metal rod and take away the heat generated in the tank body through the flowing air, thereby improving the heat dissipation capacity, and by utilizing the Bernoulli principle at the acceleration outlet to increase the air flow rate, the heat dissipation efficiency is further improved, and the heat dissipation requirements of the external heat exchange medium metal hydride storage tank are fully met, the heat dissipation acceleration mechanism includes a heat dissipation pipe arranged at the end of the heat-conducting metal rod, a mounting hole is arranged at the inner bottom end of the heat dissipation pipe, and the top end of the heat-conducting metal rod extends into the mounting hole; a medium hole is arranged at the top end of the mounting hole, a pump body connecting hole is arranged on the side of the medium hole, a pump body is connected to the pump body connecting hole, an acceleration outlet is arranged at the top end of the medium hole, a transition hole is arranged between the acceleration outlet and the medium hole, and the diameter of the transition hole gradually decreases in the direction close to the acceleration outlet; a pipe is arranged at the top end of the acceleration outlet, and a plurality of pipe holes are arranged on the side wall of the pipe.

[0016] Furthermore, in order to be able to connect and fix the heat-conducting metal rod with the heat dissipation acceleration mechanism so that the heat on the heat-conducting metal rod is transferred to the heat dissipation acceleration mechanism, and the installation is convenient and quick, which is conducive to improving the efficiency during assembly, the connecting component includes a positioning platform arranged on the top of the heat-conducting metal rod and located at the bottom end of the heat dissipation tube, the bottom end of the heat dissipation tube is provided with a positioning hole, and the top end of the positioning platform is provided with a positioning shaft matching the positioning hole; the connecting component also includes a spring placement hole arranged at the top of the positioning platform and located inside the heat-conducting metal rod, and a spring is arranged in the spring placement hole; a pin shaft hole corresponding to the spring placement hole is arranged on the side wall of the heat dissipation tube, a plug is arranged at one end inside the pin shaft hole, and a pin shaft is arranged between the plug and the spring.

[0017] Furthermore, in order to increase the heat dissipation area inside the wind leaf type heat dissipation mechanism and improve the heat dissipation efficiency, the wind leaf type heat dissipation mechanism includes a heat dissipation ring arranged at the top of the pipe, a through hole is arranged in the middle of the heat dissipation ring, and a plurality of inner heat dissipation blades are arranged on the inner wall of the heat dissipation ring.

[0018] Furthermore, in order to increase the heat dissipation area outside the wind leaf type heat dissipation mechanism, improve the heat dissipation efficiency, and thereby enable the heat to be quickly dissipated, efficiently realize heat exchange, and ensure the stability and safety of the internal temperature of the hydrogen storage tank, a plurality of external heat dissipation blades are arranged on the outer wall of the heat dissipation ring, and the outer surface area of ​​the outer heat dissipation blades is larger than the outer surface area of ​​the inner heat dissipation blades.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides an external heat exchange medium metal hydride storage tank, which has the following beneficial effects:

[0021] (1) The present invention can improve the efficiency of absorbing heat in the tank body and improve the ability of the hydrogen storage tank to dissipate heat out of the tank body, while avoiding the hidden risks caused by leakage of the heat exchange medium and ensuring the stability of the tank body temperature and the safety of long-term use.

[0022] (2) The tank body is made of high-strength rigid composite metal material, so that the tank body does not deform, is resistant to high pressure, has stable chemical properties, and can effectively resist the pressure of internal materials and the impact force of external space without deformation; by setting a protective shell, the protective shell is fixed on the tank body, thereby protecting the safety of the components on the top and bottom of the tank body, and the protective shell has the ability to exchange gas, thereby ensuring the dissipation of heat.

[0023] (3) By setting up structures such as spiral fins and heat conduction plates in the heat conduction mechanism, the heat absorption area of ​​the heat-conducting metal rod is increased, thereby improving the heat absorption capacity; by setting up the structure of the wind leaf type heat dissipation mechanism, the heat dissipation area inside and outside the wind leaf type heat dissipation mechanism can be increased, the heat dissipation efficiency can be improved, and the heat can be quickly dissipated, thereby realizing efficient heat exchange.

[0024] (4) By setting up a heat dissipation acceleration mechanism, flowing air or water is introduced at the end of the heat-conducting metal rod, and the heat generated in the tank body is taken away by the flowing air or water, thereby improving the heat dissipation capacity. By using the Bernoulli principle at the acceleration outlet, the flow rate of air or water is increased, and the heat dissipation efficiency is further improved, fully meeting the heat dissipation requirements of the external heat exchange medium metal hydride storage tank; by setting up a connecting component, the heat-conducting metal rod and the heat dissipation acceleration mechanism can be connected and fixed, so that the heat on the heat-conducting metal rod is transferred to the heat dissipation acceleration mechanism, and the installation is convenient and quick, which is conducive to improving the efficiency during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 2 is a schematic structural diagram of an external heat exchange medium metal hydride storage tank according to Embodiment 1 of the present invention;

[0027] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0028] Figure 3 This is a schematic diagram of the structure of the external heat exchange medium metal hydride storage tank after removing the protective shell according to the first embodiment of the present invention;

[0029] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0030] Figure 5 Schematic diagram of the internal structure of the external heat exchange medium metal hydride storage tank according to the first embodiment of the present invention;

[0031] Figure 6 It is a schematic diagram of the partial structure of the heat conduction mechanism in the external heat exchange medium metal hydride storage tank according to the first embodiment of the present invention;

[0032] Figure 7 Schematic diagram of the positional relationship between the positioning hole and the positioning axis in the external heat exchange medium metal hydride storage tank according to the first embodiment of the present invention;

[0033] Figure 8 Schematic diagram of the internal structure of the heat dissipation pipe in the external heat exchange medium metal hydride storage tank according to the first embodiment of the present invention;

[0034] Fig. 9 2 is a schematic structural diagram of an external heat exchange medium metal hydride storage tank according to Embodiment 2 of the present invention;

[0035] Fig.10 Schematic diagram of the positional relationship between the positioning hole and the positioning axis in the external heat exchange medium metal hydride storage tank according to the second embodiment of the present invention;

[0036] Fig.11 Schematic diagram of the internal structure of the heat dissipation pipe in the external heat exchange medium metal hydride storage tank according to the second embodiment of the present invention.

[0037] In the figure:

[0038] 1. Tank cavity; 2. Tank top cover; 3. Tank bottom cover; 4. Hydrogen filling port; 5. Hydrogen filling port valve; 6. Hydrogen outlet; 7. Hydrogen outlet valve; 8. Heat conduction mechanism; 801. Heat conduction metal rod; 802. Spiral fin; 803. Connecting plate; 804. Screw; 805. Dovetail groove; 806. Fixing block; 807. Side plate; 808. Heat conduction plate; 9. Heat dissipation acceleration mechanism; 901. Heat dissipation pipe; 902. Mounting hole; 903. Medium hole; 904. Pump body connection hole; 9041. Water pump connection hole; 905. Pump body; 9051. Water pump; 906. Acceleration outlet; 907. Transition hole; 908, pipeline; 909, pipe hole; 10, connecting assembly; 1001, positioning platform; 1002, positioning hole; 1003, positioning shaft; 1004, spring placement hole; 1005, spring; 1006, pin hole; 1007, plug; 1008, pin; 11, fan-type heat dissipation mechanism; 1101, heat dissipation ring; 1102, through hole; 1103, inner heat dissipation blade; 1104, outer heat dissipation blade; 12, connecting bolt; 13, connecting nut; 14, protective shell; 15, air exchange hole; 16, fixing bolt; 17, fixing nut; 18, spring washer; 19, flat washer. DETAILED DESCRIPTION

[0039] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0040] According to an embodiment of the present invention, an external heat exchange medium metal hydride storage tank is provided.

[0041] Embodiment 1

[0042] The present invention is further described with reference to the accompanying drawings and specific embodiments. Figure 1-8As shown, the external heat exchange medium metal hydride storage tank according to an embodiment of the present invention includes a tank body, the tank body includes a tank body middle cavity 1, the tank body middle cavity 1 is filled with hydride alloy powder material, the top of the tank body middle cavity 1 is provided with a tank body top cover 2, the bottom of the tank body middle cavity 1 is provided with a tank body bottom cover 3, the side wall of the tank body top cover 2 is provided with a hydrogen filling port 4, the end of the hydrogen filling port 4 is provided with a hydrogen filling port valve 5, the side wall of the tank body bottom cover 3 is provided with a hydrogen outlet 6, the end of the hydrogen outlet 6 is provided with a hydrogen outlet valve 7, and the hydrogen filling port 4 and the hydrogen outlet 6 are arranged diagonally on the side wall; the tank body of the present invention is a capsule-shaped cylindrical storage tank, and the upper and lower parts are basically symmetrical. A plurality of heat-conducting mechanisms 8 are arranged inside the tank cavity 1, and the top and bottom ends of the heat-conducting mechanisms 8 extend into the tank top cover 2 and the tank bottom cover 3 respectively, and heat-dissipating acceleration mechanisms 9 are arranged on the tank top cover 2 and the tank bottom cover 3 and at both ends of the heat-conducting mechanisms 8, and a connecting component 10 is arranged between the heat-dissipating acceleration mechanism 9 and the heat-conducting mechanism 8; a fan-leaf heat-dissipating mechanism 11 is arranged at one end of the heat-dissipating acceleration mechanism 9 away from the heat-conducting mechanism 8.

[0043] With the aid of the above scheme, the present invention can improve the efficiency of absorbing heat in the tank body, and improve the ability of the hydrogen storage tank to dissipate heat out of the tank body, while avoiding the hidden risks caused by leakage of the heat exchange medium, and ensuring the stability of the tank body temperature and the safety of long-term use.

[0044] In one embodiment, for the above-mentioned tank body, the tank body is made of high-strength rigid composite metal material, and the tank body cavity 1 is fixed to the tank body top cover 2 and the tank body bottom cover 3 by connecting bolts 12 and connecting nuts 13, so that the tank body does not deform, is resistant to high pressure, has stable chemical properties, and can effectively resist the pressure of the internal material and the impact force of the external space without deformation.

[0045] In one embodiment, for the above-mentioned tank top cover 2 and tank bottom cover 3, a protective shell 14 is provided on the outer side of the tank top cover 2 and the tank bottom cover 3, and a plurality of air exchange holes 15 are provided on the side wall of the protective shell 14; the protective shell 14 is connected to the tank top cover 2 and the tank bottom cover 3 by a plurality of fixing bolts 16, and the outer side of the fixing bolts 16 is sequentially sleeved with fixing nuts 17, spring washers 18 and flat washers 19, the spring washers 18 are mainly used for shock absorption and buffering, and can prevent the fixing bolts 16 from loosening, and the flat washers 19 are mainly used to increase the area of ​​the fixing nuts 17 and the contact surface, disperse the pressure and prevent the soft places from being crushed, so that the protective shell 14 is fixed on the tank body, thereby protecting the safety of the components at the top and bottom of the tank body, and enabling the protective shell 14 to have the ability to exchange gas, thereby ensuring the dissipation of heat.

[0046] In one embodiment, for the above-mentioned heat-conducting mechanism 8, the heat-conducting mechanism 8 includes a plurality of heat-conducting metal rods 801 arranged inside the tank cavity 1, the heat-conducting metal rods 801 are arranged in a scientific manner, the outer side of the heat-conducting metal rods 801 is sleeved with spiral fins 802, and both ends of the heat-conducting metal rods 801 are connected to the heat dissipation acceleration mechanism 9 through a connecting component 10; the heat-conducting mechanism 8 also includes a connecting plate 803 arranged on the side of the heat-conducting metal rods 801, one end of the connecting plate 803 is connected through a screw 804 The connecting plate 803 is connected to the heat-conducting metal rod 801, and a dovetail groove 805 is arranged inside the connecting plate 803. A fixing block 806 is arranged inside the dovetail groove 805, and the fixing block 806 is interference-fitted with the dovetail groove 805. One end of the fixing block 806 away from the heat-conducting metal rod 801 extends to the outside of the dovetail groove 805 and is connected to a side plate 807. A plurality of heat-conducting plates 808 are arranged on the side wall of the side plate 807, thereby increasing the heat absorption area of ​​the heat-conducting metal rod 801 and improving the heat absorption capacity.

[0047] The working principle of the heat conducting mechanism 8 is: it is connected to the dovetail groove 805 through the fixing block 806, and is connected to the heat conducting metal rod 801 through the screw 804, so that the heat conducting plate 808 is connected to the heat conducting metal rod 801, and the heat is absorbed and conducted through the heat conducting metal rod 801, the heat conducting plate 808 and other components.

[0048] In one embodiment, for the above-mentioned heat dissipation acceleration mechanism 9, the heat dissipation acceleration mechanism 9 includes a heat dissipation pipe 901 arranged at the end of the heat-conducting metal rod 801, the inner bottom end of the heat dissipation pipe 901 is provided with a mounting hole 902, and the top end of the heat-conducting metal rod 801 extends into the mounting hole 902; the top end of the mounting hole 902 is provided with a medium hole 903, the side of the medium hole 903 is provided with a pump body connecting hole 904, the pump body connecting hole 904 is connected with a pump body 905 (the pump body 905 adopts an air pump), the top end of the medium hole 903 is provided with an acceleration outlet 906, and the acceleration outlet 906 is connected to the pump body 905. A transition hole 907 is provided between the medium holes 903, and the diameter of the transition hole 907 gradually decreases in the direction approaching the acceleration outlet 906; a pipe 908 is provided at the top of the acceleration outlet 906, and a plurality of tube holes 909 are provided on the side wall of the pipe 908, so that flowing air is introduced at the end of the heat-conducting metal rod 801, and the heat generated in the tank body is taken away by the flowing air, thereby improving the heat dissipation capacity, and by using the Bernoulli principle at the acceleration outlet 906, the air flow rate is increased, and the heat dissipation efficiency is further improved, thereby fully meeting the heat dissipation requirements of the external heat exchange medium metal hydride storage tank.

[0049] The working principle of the heat dissipation acceleration mechanism 9 is as follows: air is ventilated into the heat dissipation pipe 901 through the pump body 905, and the heat transferred from the heat-conducting metal rod 801 is taken away by the flowing gas and accelerated at the acceleration outlet 906 and the transition hole 907, thereby increasing the speed of gas outflow. At this time, the gas flow rate in the pipeline 908 is fast, and the external air is attracted into the pipeline 908, so that the ventilation volume is further increased.

[0050] In one embodiment, for the above-mentioned connection component 10, the connection component 10 includes a positioning platform 1001 arranged on the top of the heat-conducting metal rod 801 and located at the bottom of the heat dissipation pipe 901, the bottom of the heat dissipation pipe 901 is provided with a positioning hole 1002, and the top of the positioning platform 1001 is provided with a positioning shaft 1003 that matches the positioning hole 1002; the connection component 10 also includes a spring placement hole 1004 arranged on the top of the positioning platform 1001 and located inside the heat-conducting metal rod 801, and the spring placement hole 1004 is provided at the top of the positioning platform 1001. 04 is provided with a spring 1005; a pin hole 1006 corresponding to the spring placement hole 1004 is provided on the side wall of the heat dissipation tube 901, a plug 1007 is provided at one end inside the pin hole 1006, and a pin 1008 is provided between the plug 1007 and the spring 1005, so that the heat-conducting metal rod 801 can be connected and fixed to the heat dissipation acceleration mechanism 9, so that the heat on the heat-conducting metal rod 801 is transferred to the heat dissipation acceleration mechanism 9, and the installation is convenient and quick, which is conducive to improving the efficiency during assembly.

[0051] The working principle of the connecting assembly 10 is as follows: align the positioning hole 1002 with the positioning shaft 1003 (the positioning of the positioning hole 1002 and the positioning shaft 1003 makes installation more convenient), and then drive the spring placement hole 1004 in the heat-conducting metal rod 801 to align with the pin hole 1006. Under the action of the spring 1005, half of the pin 1008 extends into the pin hole 1006, and the pin hole 1006 is blocked by the plug 1007. At this time, the heat-conducting metal rod 801 can be connected to the heat dissipation acceleration mechanism 9.

[0052] In one embodiment, for the above-mentioned wind leaf type heat dissipation mechanism 11, the wind leaf type heat dissipation mechanism 11 includes a heat dissipation ring 1101 arranged at the top of the air inlet duct 908, a through hole 1102 is arranged in the middle of the heat dissipation ring 1101, and a plurality of inner heat dissipation blades 1103 are arranged on the inner side wall of the heat dissipation ring 1101; a plurality of outer heat dissipation blades 1104 are arranged on the outer side wall of the heat dissipation ring 1101, and the outer surface area of ​​the outer heat dissipation blade 1104 is larger than the outer surface area of ​​the inner heat dissipation blade 1103, thereby increasing the heat dissipation area inside and outside the wind leaf type heat dissipation mechanism 11, improving the heat dissipation efficiency, and then allowing the heat to be quickly dissipated, thereby efficiently realizing heat exchange.

[0053] The working principle of the wind blade type heat dissipation mechanism 11 is: with the help of the heat dissipation ring 1101, the inner heat dissipation blades 1103, and the outer heat dissipation blades 1104, the heat dissipation area is expanded and the heat dissipation efficiency is improved.

[0054] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in the actual process is described in detail below.

[0055] In actual application, the hydride alloy powder material is placed inside the tank cavity, hydrogen is charged through the hydrogen charging port 4, hydrogen is discharged through the hydrogen outlet 6, and the control is performed through the hydrogen charging port valve 5 and the hydrogen outlet valve 7. Heat is generated during the hydrogen storage process, and the heat is absorbed by the heat conductive metal rod 801, the heat conductive plate 808 and other components and guided to the heat dissipation acceleration mechanism 9, and the heat dissipation acceleration mechanism 9 accelerates the heat transfer to the wind leaf type heat dissipation mechanism 11, and the heat is dissipated through the wind leaf type heat dissipation mechanism 11.

[0056] Embodiment 2

[0057] Based on the above embodiment 1, Figure 9-11 As shown, on the basis of the first embodiment, the protective shell 14 is welded to the tank top cover 2 and the tank bottom cover 3, and the protective shell 14 is a closed collecting cover, and the collecting cover is provided with a water inlet and a water outlet to facilitate circulating heat dissipation.

[0058] The heat dissipation acceleration mechanism 9 includes a heat dissipation pipe 901 arranged at the end of the heat-conducting metal rod 801, a mounting hole 902 is arranged at the inner bottom end of the heat dissipation pipe 901, and the top end of the heat-conducting metal rod 801 extends into the mounting hole 902; a medium hole 903 is arranged at the top end of the mounting hole 902, a water pump connection hole 9041 is arranged at the side of the medium hole 903, a water pump 9051 is connected to the water pump connection hole 9041, an acceleration outlet 906 is arranged at the top end of the medium hole 903, and a gas outlet 906 is arranged between the acceleration outlet 906 and the medium hole 903. A transition hole 907 is formed, and the diameter of the transition hole 907 gradually decreases in the direction close to the acceleration outlet 906; a pipe 908 is provided at the top of the acceleration outlet 906, and a plurality of pipe holes 909 are provided on the side wall of the pipe 908, so that flowing water is introduced into the end of the heat-conducting metal rod 801, and the heat generated in the tank body is taken away by the flowing water, thereby improving the heat dissipation capacity, and by using the Bernoulli principle at the acceleration outlet 906, the water flow rate is increased, and the heat dissipation efficiency is further improved, thereby fully meeting the heat dissipation requirements of the external heat exchange medium metal hydride storage tank.

[0059] In summary, the present invention can improve the efficiency of absorbing heat in the tank body, and improve the ability of the hydrogen storage tank to dissipate heat out of the tank body, while avoiding the risk of hidden dangers caused by leakage of heat exchange medium, and ensuring the stability of the tank body temperature and the safety of long-term use. The tank body is made of high-strength rigid composite metal material, so that the tank body does not deform, is resistant to high pressure, and has stable chemical properties. It can effectively resist the pressure of internal materials and the impact force of the external space without deformation; by setting a protective shell 14, the protective shell 14 is fixed on the tank body, thereby protecting the safety of the components at the top and bottom of the tank body, and the protective shell 14 has the ability to exchange gas, thereby ensuring the dissipation of heat. By setting structures such as spiral fins 802 and heat conducting plates 808 in the heat conducting mechanism 8, the heat absorption area of ​​the heat conducting metal rod 801 is increased, so that the heat absorption capacity is improved; through the structural setting of the wind leaf type heat dissipation mechanism 11, the heat dissipation area can be increased inside and outside the wind leaf type heat dissipation mechanism 11, the heat dissipation efficiency can be improved, and the heat can be quickly dissipated, and heat exchange can be achieved efficiently. By setting up the heat dissipation acceleration mechanism 9, flowing air or water is introduced at the end of the heat-conducting metal rod 801, and the heat generated in the tank body is taken away by the flowing air or water, thereby improving the heat dissipation capacity. By utilizing the Bernoulli principle at the acceleration outlet 906 to increase the flow rate of air or water, the heat dissipation efficiency is further improved, and the heat dissipation requirements of the external heat exchange medium metal hydride storage tank are fully met. By setting up the connecting component 10, the heat-conducting metal rod 801 can be connected and fixed to the heat dissipation acceleration mechanism 9, so that the heat on the heat-conducting metal rod 801 is transferred to the heat dissipation acceleration mechanism 9, and the installation is convenient and quick, which is conducive to improving the efficiency during assembly.

[0060] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An external heat exchange medium metal hydride storage tank, comprising a tank body, characterized in that: The tank body comprises a tank body cavity (1), a tank body top cover (2) is arranged at the top end of the tank body cavity (1), a tank body bottom cover (3) is arranged at the bottom end of the tank body cavity (1), a hydrogen filling port (4) is arranged on the side wall of the tank body top cover (2), a hydrogen filling port valve (5) is arranged at the end of the hydrogen filling port (4), a hydrogen outlet (6) is arranged on the side wall of the tank body bottom cover (3), and a hydrogen outlet valve (7) is arranged at the end of the hydrogen outlet (6); A plurality of heat conducting mechanisms (8) are arranged inside the tank body cavity (1), and the top and bottom ends of the heat conducting mechanisms (8) extend into the tank body top cover (2) and the tank body bottom cover (3) respectively, and heat dissipation acceleration mechanisms (9) are arranged on the tank body top cover (2) and the tank body bottom cover (3) and at both ends of the heat conducting mechanisms (8), and a connecting component (10) is arranged between the heat dissipation acceleration mechanism (9) and the heat conducting mechanism (8); A fan-type heat dissipation mechanism (11) is provided at one end of the heat dissipation acceleration mechanism (9) away from the heat conduction mechanism (8); The heat-conducting mechanism (8) comprises a heat-conducting metal rod (801) and a connecting plate (803) arranged on the side of the heat-conducting metal rod (801); one end of the connecting plate (803) is connected to the heat-conducting metal rod (801) via a screw (804); a dovetail groove (805) is arranged inside the connecting plate (803); a fixing block (806) is arranged inside the dovetail groove (805); and the fixing block (806) is interference-fitted with the dovetail groove (805); One end of the fixing block (806) away from the heat-conducting metal rod (801) extends to the outside of the dovetail groove (805) and is connected to a side plate (807), and a plurality of heat-conducting plates (808) are arranged on the side wall of the side plate (807); The heat dissipation acceleration mechanism (9) comprises a heat dissipation pipe (901) arranged at the end of the heat-conducting metal rod (801), a mounting hole (902) is arranged at the inner bottom end of the heat dissipation pipe (901), and the top end of the heat-conducting metal rod (801) extends into the mounting hole (902); A medium-passing hole (903) is provided at the top of the mounting hole (902), a pump body connecting hole (904) is provided on the side of the medium-passing hole (903), a pump body (905) is connected inside the pump body connecting hole (904), an acceleration outlet (906) is provided at the top of the medium-passing hole (903), a transition hole (907) is provided between the acceleration outlet (906) and the medium-passing hole (903), and the diameter of the transition hole (907) gradually decreases in a direction approaching the acceleration outlet (906); A pipe (908) is provided at the top of the acceleration outlet (906), and a plurality of pipe holes (909) are provided on the side wall of the pipe (908); The connection assembly (10) comprises a positioning platform (1001) arranged on the top of the heat-conducting metal rod (801) and located at the bottom of the heat dissipation tube (901); a positioning hole (1002) is arranged at the bottom of the heat dissipation tube (901); and a positioning shaft (1003) matching the positioning hole (1002) is arranged at the top of the positioning platform (1001).

2. The external heat exchange medium metal hydride storage tank according to claim 1, characterized in that: The tank body is made of a high-strength rigid composite metal material, and the tank body cavity (1) is fixed to the tank body top cover (2) and the tank body bottom cover (3) via connecting bolts (12) and connecting nuts (13).

3. The external heat exchange medium metal hydride storage tank according to claim 2, characterized in that: A protective shell (14) is disposed on the outer sides of the tank top cover (2) and the tank bottom cover (3), and a plurality of air exchange holes (15) are disposed on the side walls of the protective shell (14); The protective shell (14) is fixedly connected to the tank top cover (2) and the tank bottom cover (3).

4. The external heat exchange medium metal hydride storage tank according to claim 3, characterized in that: The heat-conducting mechanism (8) comprises a plurality of heat-conducting metal rods (801) arranged inside the tank body cavity (1), spiral fins (802) are sleeved on the outer sides of the heat-conducting metal rods (801), and both ends of the heat-conducting metal rods (801) are connected to the heat dissipation acceleration mechanism (9) via the connecting assembly (10).

5. The external heat exchange medium metal hydride storage tank according to claim 1, characterized in that: The connection assembly (10) further comprises a spring placement hole (1004) arranged at the top end of the positioning platform (1001) and located inside the heat-conducting metal rod (801), wherein a spring (1005) is arranged in the spring placement hole (1004); A pin shaft hole (1006) corresponding to the spring placement hole (1004) is provided on the side wall of the heat dissipation tube (901), a plug (1007) is provided at one end inside the pin shaft hole (1006), and a pin shaft (1008) is provided between the plug (1007) and the spring (1005).

6. The external heat exchange medium metal hydride storage tank according to claim 5, characterized in that: The wind blade type heat dissipation mechanism (11) comprises a heat dissipation ring (1101) arranged at the top end of the pipe (908), a through hole (1102) is arranged in the middle of the heat dissipation ring (1101), and a plurality of inner heat dissipation blades (1103) are arranged on the inner side wall of the heat dissipation ring (1101).

7. The external heat exchange medium metal hydride storage tank according to claim 6, characterized in that: A plurality of external heat dissipation blades (1104) are arranged on the outer side wall of the heat dissipation ring (1101), and the area of ​​the outer surface of the external heat dissipation blades (1104) is greater than the area of ​​the outer surface of the internal heat dissipation blades (1103).

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