Metal hydride hydrogen storage tank

Abstract

The utility model relates to the technical field of metal hydride storage, in particular to a metal hydride hydrogen storage tank which comprises a tank body, and a protective sleeve is sleeved on the outer side of the tank body. A heat balance mechanism is installed in the tank body and comprises a heat conducting device, conveying pipes and an adapter, the heat conducting device is fixed to the inner wall of the tank body, the conveying pipes are installed at the top and the bottom of the heat conducting device, the tops of the conveying pipes penetrate through the top end wall of the tank body and are located on the outer side of the tank body, and the adapter is installed at the end of each conveying pipe. According to the hydrogen storage tank disclosed by the utility model, the heat balance mechanism is arranged in the hydrogen storage tank, and cooling liquid or heated liquid can be introduced into the heat conduction device according to different states of hydrogen absorption or hydrogen desorption of the metal hydride through the mutual matching effect of the heat conduction device, the conveying pipe and the adapter, so that the heat absorption or heating effect is realized; the heat balance effect on the environment in the tank body is achieved, and the tank body is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of metal hydride storage, and particularly relates to a metal hydride hydrogen storage tank. Background Art

[0002] Metal hydrides are a class of chemical substances, which are compounds formed by metals and hydrogen elements. They usually have specific chemical and physical properties and can exist under different conditions. When storing metal hydrides, they are generally placed in a hydrogen storage tank. Since metal hydrides release heat when absorbing hydrogen in the tank body and absorb heat when releasing hydrogen, this process will cause damage to the tank body, and in severe cases, the tank body may collide and break. Therefore, those skilled in the art have provided a metal hydride hydrogen storage tank to solve the problems raised in the above background art. Summary of the Invention

[0003] In order to solve the problem that the heat absorption and heat release during the use of the tank body cause damage to the tank body, the utility model provides a metal hydride hydrogen storage tank.

[0004] A metal hydride hydrogen storage tank includes a tank body, and a protective sleeve is sleeved outside the tank body;

[0005] A heat balance mechanism is installed in the tank body. The heat balance mechanism includes a heat conductor, a delivery pipe and an adapter. The heat conductor is fixed on the inner wall of the tank body. Delivery pipes are installed at both the top and the bottom of the heat conductor. One end of the delivery pipe passes through the inner wall of the tank body and is located outside the tank body, and the adapter is installed at the end of the delivery pipe.

[0006] Preferably: The protective sleeve is made of carbon fiber composite material, which has the characteristics of light weight, high strength and high toughness, and can effectively reduce the mass of the hydrogen storage tank and improve its performance.

[0007] Preferably: There are two delivery pipes and adapters. One is used as the liquid inlet end and the other is the output end. The delivery pipes, the adapters and the heat conductor together form a circulation loop to realize the circulation of the liquid, and then realize the heat absorption or heating effect.

[0008] Preferably: The heat conductor is made of metal material and is arranged in a rectangular wave shape. Its structure is formed by folding the whole metal plate for many times; the folding angle is 90°. The metal material can conduct heat better. At the same time, the folded heat conductor increases its heat conduction surface area and improves the heat conduction efficiency.

[0009] Preferably, a plurality of fixing rods are provided on the left and right sides of the heat conductor, and the other ends of the fixing rods are fixed to the inner wall of the tank body. Inside the heat conductor, through holes penetrating up and down are provided. The number of the through holes is multiple and they are arranged equidistantly before and after in the heat conductor. The fixing rods are used to fixedly install the heat conductor, and the multiple side-by-side and equidistant through holes can better achieve the effect of heating or heat absorption when the liquid flows.

[0010] Preferably, the upper and lower ends of the heat conductor are sealed with one end of the conveying pipe. The conveying pipe includes a pipe body. The upper end of the pipe body penetrates through the top wall of the tank body and is connected to the adapter. A sealing cover is provided at the bottom. The sealing cover is sleeved on the end of the inlet or outlet of the heat conductor. The sealing cover is fixed to the heat conductor through fasteners. The conveying pipe is used to convey the external liquid into the heat conductor for circulation. The detachable connection between the sealing cover and the heat conductor helps with its maintenance and replacement.

[0011] Preferably, the adapter includes a connecting pipe. A joint is provided at the bottom of the connecting pipe. The joint is connected to the end of the pipe body. The other end of the connecting pipe is provided with two branch pipes, and a control valve is installed on each branch pipe. By providing two branch pipes and corresponding control valves in the adapter, the diversion of the heating liquid and the coolant can be realized, avoiding their mixing and any influence.

[0012] The technical effects and advantages of the present utility model:

[0013] In the hydrogen storage tank of the present utility model, a heat balance mechanism is provided inside. Through the mutual cooperation of the heat conductor, the conveying pipe and the adapter, coolant or heated liquid can be introduced into the heat conductor according to different states of the metal hydride absorbing hydrogen or releasing hydrogen, achieving the effect of heat absorption or heating, and achieving the heat balance effect on the environment inside the tank body, avoiding damage to the tank body. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of a metal hydride hydrogen storage tank provided by an embodiment of the present application;

[0015] Figure 2 is a cross-sectional view of the tank body in a metal hydride hydrogen storage tank provided by an embodiment of the present application;

[0016] Figure 3 is a schematic structural diagram of the heat balance mechanism in a metal hydride hydrogen storage tank provided by an embodiment of the present application;

[0017] Figure 4 is an exploded view of the heat balance mechanism in a metal hydride hydrogen storage tank provided by an embodiment of the present application;

[0018] Figure 5 is a schematic structural diagram of the sealing cover in a metal hydride hydrogen storage tank provided by an embodiment of the present application.

[0019] In the figure:

[0020] 1. Tank body; 2. Protective sleeve; 3. Heat conductor; 4. Delivery pipe; 5. Adapter; 31. Fixed rod; 32. Through hole; 41. Pipe body; 42. Sealing cover; 43. Fastener; 51. Connecting pipe; 52. Joint; 53. Branch pipe; 54. Control valve. Detailed implementation mode

[0021] The present utility model will be further described in detail below in conjunction with the accompanying drawings and the specific implementation mode. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations will be obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes. Embodiment

[0022] Please refer to Figures 1 to 5 , in this embodiment, a metal hydride hydrogen storage tank is provided, which includes a tank body 1. A protective sleeve 2 is sleeved outside the tank body 1. The protective sleeve 2 plays a role in heat preservation for the tank body 1. It is made of carbon fiber composite material, which has the characteristics of light weight, high strength, and high toughness. It can effectively reduce the mass of the hydrogen storage tank and improve its performance. Moreover, a heat balance mechanism is installed inside the tank body 1. When the metal hydride inside the tank body 1 absorbs hydrogen and releases heat, the heat balance mechanism absorbs and takes away the heat, avoiding excessive internal heat from damaging the tank body 1. On the contrary, when the metal hydride releases hydrogen and absorbs heat, the heat balance mechanism provides heat inside the tank body 1, thus providing a better storage environment for the storage of the metal hydride and also protecting the tank body 1;

[0023] The heat balance mechanism includes a heat conductor 3, a delivery pipe 4, and an adapter 5. The heat conductor 3 is fixed on the inner wall of the tank body 1. Delivery pipes 4 are installed at both the top and bottom of it. The top of the delivery pipe 4 passes through the top wall of the tank body 1 and is located outside the tank body 1. Moreover, an adapter 5 is installed at the end of the delivery pipe 4. There are two delivery pipes 4 and adapters 5, one of which is used as the liquid inlet end and the other is the output end, which can be set arbitrarily. Through the above structural design, the adapter 5, the delivery pipe 4, the heat conductor 3, and the delivery pipe 4 and the adapter 5 on the other side form a circulating path;

[0024] When the metal hydride absorbs hydrogen and releases heat, the external coolant is transported into the heat conductor 3 through the adapter 5 and the delivery pipe 4. The heat conductor 3 absorbs the heat, and the heat is carried away by the coolant to prevent overheating inside the tank body 1. Conversely, when the metal hydride releases hydrogen and absorbs heat, the heated liquid is transported into the heat conductor 3. The heat conductor 3 generates heat, and its heat is absorbed by the metal hydride to achieve balance, realizing the heat management inside the tank body 1;

[0025] The heat conductor 3 is made of a metal material with good thermal conductivity. Its structure is formed by folding the entire metal plate multiple times, and the folding angle is 90°. The design of its folding structure can increase the contact area between the heat conductor 3 and the materials inside the tank body 1, and better realize the heat transfer;

[0026] A plurality of fixing rods 31 are arranged on the left and right sides of the heat conductor 3. The other ends of the fixing rods 31 are fixed inside the tank body 1 to realize the installation and fixation of the heat conductor 3. Moreover, inside the heat conductor 3, through holes 32 that penetrate up and down are provided. The number of the through holes 32 is set to be multiple and is equidistantly arranged before and after inside the heat conductor 3. The multiple through holes 32 can increase the efficiency of heat release or heat absorption when the liquid flows, forming a structure of multi-point contact;

[0027] The upper and lower ends of the heat conductor 3 are sealed with one end of the delivery pipe 4. Then, the delivery pipe 4 can transport the coolant or the heated liquid into the heat conductor 3. The delivery pipe 4 includes a pipe body 41. The upper end of the pipe body 41 penetrates through the top wall of the tank body 1 and is connected to the adapter 5. A sealing cover 42 is arranged at its bottom. The sealing cover 42 is sleeved on the end of the inlet or outlet of the heat conductor 3 to achieve sealing. The sealing cover 42 is fixed to the heat conductor 3 through a fastener 43. The fastener 43 can adopt a screw, which is convenient for disassembly;

[0028] The adapter 5 includes a connecting pipe 51. A joint 52 is arranged at the bottom of the connecting pipe 51. The joint 52 is connected to the end of the pipe body 41 to achieve communication. The other end of the connecting pipe 51 is provided with two branch pipes 53, and a control valve 54 is installed on each branch pipe 53. Among the two branch pipes 53, one leads to the coolant, and the other leads to the heated liquid. Control is achieved through the control valve 54. After one control valve 54 is opened, the other corresponding one is closed. Until the liquid inside the heat conductor 3 is emptied, then the other liquid is introduced to avoid mixing and affecting the heat absorption or heating effect.

[0029] The hydrogen storage tank of the present utility model is provided with a heat balance mechanism inside it. Through the mutual cooperation of the heat conductor 3, the delivery pipe 4, and the adapter 5, it can introduce the coolant or the heated liquid into the heat conductor 3 according to different states of the metal hydride absorbing hydrogen or releasing hydrogen, realize the heat absorption or heating effect, and achieve the heat balance effect on the environment inside the tank body 1, avoiding damage to the tank body 1.

[0030] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments in the present utility model without creative efforts shall fall within the scope of protection of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model shall be implemented by conventional means in the art unless otherwise specified and limited.

Claims

1. A metal hydride hydrogen storage tank, comprising a tank body (1), the outer side of the tank body (1) being provided with a protective sleeve (2), characterized in that: A heat balance mechanism is installed in the tank body (1), and the heat balance mechanism comprises a heat conductor (3), a delivery pipe (4) and an adapter (5). The heat conductor (3) is fixed on the inner wall of the tank body (1), and the delivery pipe (4) is installed on the top and bottom of the heat conductor (3). One end of the delivery pipe (4) passes through the inner wall of the tank body (1) and is located outside the tank body (1), and the adapter (5) is installed at the end of the delivery pipe (4); A plurality of fixing rods (31) are arranged on the left and right sides of the heat conductor (3), the other ends of the fixing rods (31) are fixed to the inner wall of the tank body (1), and a through hole (32) is provided in the heat conductor (3) extending vertically therethrough, and a plurality of through holes (32) are arranged at equal intervals; The upper and lower ends of the heat conductor (3) are respectively sealed with one end of the delivery pipe (4); the delivery pipe (4) comprises a pipe body (41); the upper end of the pipe body (41) passes through the top end wall of the tank body (1) and is connected to the adapter (5); a sealing cover (42) is provided at the bottom thereof; the sealing cover (42) is sleeved on the end of the heat conductor (3); and the sealing cover (42) is fixed to the heat conductor (3) by a fastener (43); The adapter (5) comprises a connecting pipe (51), a joint (52) is arranged at the bottom of the connecting pipe (51), the joint (52) is connected to the end of the pipe body (41), two branch pipes (53) are arranged at the other end of the connecting pipe (51), and a control valve (54) is installed on each branch pipe (53).

2. A metal hydride hydrogen storage tank according to claim 1, characterized in that: The protective cover (2) is made of carbon fiber composite material.

3. A metal hydride hydrogen storage tank according to claim 1, characterized in that: The heat conductor (3) is made of metal and is arranged in a rectangular wave shape, and its structure is formed by bending the entire metal plate multiple times.

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