Leakage detection mechanism of solid hydrogen storage tank

Abstract

The utility model discloses a leakage detection mechanism of a solid hydrogen storage tank in the technical field of solid hydrogen detection, which comprises a hydrogen storage tank main body and an outer tank body wrapped outside the hydrogen storage tank main body, and a gas circulation cavity is arranged between the outer tank body and the hydrogen storage tank main body, so that even if the hydrogen leaks, the hydrogen cannot be directly exposed in the air, and the safety of the hydrogen storage tank is improved. The gas detection mechanism only moves in a closed gas circulation cavity, and the gas circulation cavity is communicated with a gas collection assembly, so that leaked gas is collected and treated by a gas collection tank in time, the situation that hydrogen flows into air is avoided, the overall sealing performance of the gas detection mechanism is improved, and the situation that the hydrogen is exposed in the air and explodes is further prevented; and a detection assembly is arranged on the outer side face of the outer tank body, when hydrogen leaks, the hydrogen can spontaneously move upwards, at the moment, gas enters the solid hydrogen detection device through a detection pipe, and the accuracy and convenience of the leakage detection mechanism are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-state hydrogen detection, in particular to a leakage detection mechanism for a solid-state hydrogen storage tank. Background Art

[0002] Hydrogen is a colorless, odorless gas with the lowest density. It is insoluble in water, flammable and reducible, and can easily react with oxygen in the air to cause explosions. Solid hydrogen is the solid form of hydrogen. Solid-state hydrogen energy storage technology has the advantages of long storage time, high safety, and convenient release of hydrogen. Solid-state hydrogen materials are widely used in many fields. At the same time, the energy storage density of solid-state hydrogen storage is extremely high. In theory, a large amount of hydrogen can be stored in a very small volume at room temperature and pressure.

[0003] Due to the special physical and chemical properties of hydrogen, it is difficult for a solid-state hydrogen storage device to detect in time whether there is a hydrogen leak when storing hydrogen, and it cannot effectively prevent the explosion of hydrogen when exposed to the air. The risk factor is high. Therefore, those skilled in the art provide a leakage detection mechanism for a solid-state hydrogen storage tank to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a leakage detection mechanism for a solid-state hydrogen storage tank to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leakage detection mechanism for a solid-state hydrogen storage tank, comprising a hydrogen storage tank body, an outer tank body wrapped outside the hydrogen storage tank body, a gas flow cavity is provided between the outer tank body and the hydrogen storage tank body, the gas flow cavity is connected to a gas collecting component, and a detection component is provided on the outer side of the outer tank body;

[0006] The detection assembly includes a solid-state hydrogen detection device and a detection tube. The solid-state hydrogen detection device is engaged in a mounting and fixing frame. The mounting and fixing frame is fixedly welded to the outer side of the outer tank body. One end of the detection tube is connected to the solid-state hydrogen detection device through a connecting bearing, and the other end of the detection tube passes through the outer tank body and extends to the inside of the gas circulation cavity.

[0007] Preferably, the gas collecting assembly comprises a gas collecting tank and a gas extraction pump, the gas collecting tank and the gas extraction pump are connected via a collecting pipe, and the gas extraction pump is connected to the gas flow chamber via a gas extraction pipe.

[0008] Preferably, the gas collecting end of the gas collecting tank is connected through the collecting pipe, and the other end of the collecting pipe is connected to the gas outlet flange on the vacuum pump.

[0009] Preferably, one end of the air extraction pipe extends into the gas circulation cavity, and the other end of the air extraction pipe is connected to the air extraction flange on the air extraction pump.

[0010] Preferably: a connecting pipe is provided on the top of the outer tank body, one end of the connecting pipe passes through the outer tank body and the top of the hydrogen storage tank body and extends to the inside of the hydrogen storage tank body, and a valve is installed on the other end of the connecting pipe.

[0011] Preferably, a contact portion between the connecting pipe and the outer tank body is wrapped with a sealing gasket, and the connecting pipe is connected to an air inlet pipe.

[0012] Preferably, a plurality of groups of cross-arranged collision rods are welded to the inner cavity of the hydrogen storage tank body, and the bottom end of the hydrogen storage tank body is mounted on the base through supporting legs.

[0013] Preferably: the gas collecting tank is mounted on another area on the upper surface of the base via a support frame, and the air extraction pump is fixedly mounted on the base and is located between the hydrogen storage tank body and the gas collecting tank.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, the detection component is installed relatively high. Combined with the physical property of hydrogen with a low density, when hydrogen leaks, it will spontaneously move upward. At this time, gas will enter the solid hydrogen detection device through the detection tube, so that the leaked hydrogen can be spontaneously identified by the detection device, thereby achieving the accuracy and convenience of the leakage detection mechanism.

[0016] 2. In the utility model, by starting the vacuum pump, the leaked gas is collected and processed by the gas collecting tank in time, avoiding the situation where hydrogen flows into the air, increasing the overall sealing of the gas detection mechanism, further preventing the explosion of hydrogen when exposed to the air, and reducing its risk factor.

[0017] 3. In the utility model, a plurality of groups of cross-arranged collision rods are welded to the inner cavity of the hydrogen storage tank body, so that the gas collides relative to the hydrogen storage tank body when entering the hydrogen storage tank body, thereby increasing the molecular motion activity between the gases and improving the gas storage capacity of the hydrogen storage tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the detection component of the utility model;

[0020] Figure 3 It is a schematic diagram of the collection component of the utility model.

[0021] In the figure: 1. outer tank body, 2. hydrogen storage tank body, 3. base, 4. gas collecting tank, 5. vacuum pump, 6. solid hydrogen detection device, 7. connecting pipe, 8. valve, 9. air inlet pipe, 10. installation fixing frame, 11. support leg, 12. support frame, 13. detection tube, 14. connecting bearing, 15. sealing gasket, 16. collision rod, 17. gas flow cavity, 18. vacuum flange, 19. air outlet flange, 20. vacuum pipe, 21. collecting pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 to Figure 3 In an embodiment of the utility model, a leakage detection mechanism of a solid-state hydrogen storage tank includes a hydrogen storage tank body 2, an outer tank body 1 wrapped around the outside of the hydrogen storage tank body 2, and a gas circulation chamber 17 is provided between the outer tank body 1 and the hydrogen storage tank body 2, so that even if hydrogen leaks, it will not be directly exposed to the air, but will only flow in the closed gas circulation chamber 17, and the gas circulation chamber 17 is connected to a gas collecting component, which can collect the leaked hydrogen in time to avoid the situation where hydrogen flows into the air and reacts with oxygen to cause an explosion. A detection component is provided on the outer side of the outer tank body 1, and the detection component is installed relatively high. Combined with the physical property of hydrogen with a small density, the leaked hydrogen is spontaneously identified by the detection device, thereby achieving the accuracy and convenience of the leakage detection mechanism.

[0024] When in use, the detection component includes a solid-state hydrogen detection device 6 and a detection tube 13. The solid-state hydrogen detection device 6 is engaged in the installation and fixing frame 10, and the installation and fixing frame 10 is fixedly welded to the outer side of the outer tank body 1. One end of the detection tube 13 is connected to the solid-state hydrogen detection device 6 through a connecting bearing 14, and the other end of the detection tube 13 passes through the outer tank body 1 and extends to the inside of the gas flow cavity 17. When hydrogen leaks, it will spontaneously move upward. At this time, gas will pass through the detection tube 13 into the solid-state hydrogen detection device 6, thereby realizing the detection of leaked gas, which is convenient and quick.

[0025] In one embodiment, specifically, the gas collecting component includes a gas collecting tank 4 and an air pump 5, the gas collecting tank 4 and the air pump 5 are connected through a collecting pipe 21, the air pump 5 is connected to the gas circulation chamber 17 through an air pump 20, the gas collecting end of the gas collecting tank 4 is connected with the collecting pipe 21, the other end of the collecting pipe 21 is connected to the gas outlet flange 19 on the air pump 5, one end of the air pump 20 extends into the gas circulation chamber 17, and the other end of the air pump 20 is connected to the air pump flange 18 on the air pump 5. When the solid hydrogen detection device 6 detects gas leakage in the gas circulation chamber 17, the air pump is started to collect and process the leaked gas in time, thereby increasing the overall sealing of the gas detection mechanism, further avoiding the exposure of hydrogen to the air, and reducing its risk factor.

[0026] Specifically, a connecting pipe 7 is provided on the top of the outer tank body 1, one end of the connecting pipe 7 passes through the outer tank body 1 and the top of the hydrogen storage tank body 2 and extends to the interior of the hydrogen storage tank body 2, and a valve 8 is installed on the other end of the connecting pipe 7. The tank mouth is opened and closed by rotating the valve 8, thereby increasing the sealing performance of the interior of the hydrogen storage tank body 2.

[0027] The contact portion between the connecting pipe 7 and the outer tank body 1 is wrapped with a sealing gasket 15, and the connecting pipe 7 is connected with an air inlet pipe 9, so as to simply and directly inject the required gas into the hydrogen storage tank.

[0028] In one embodiment, specifically, a plurality of groups of cross-arranged collision rods 16 are welded to the inner cavity of the hydrogen storage tank body 2, so that the gas collides relative to each other when entering the hydrogen storage tank body 2, thereby increasing the molecular motion activity between the gases and improving the gas storage capacity of the hydrogen storage tank body 2.

[0029] Among them, the bottom end of the hydrogen storage tank body 2 is installed on the base 3 through the support legs 11, and the gas collecting tank 4 is installed on another area of ​​the upper surface of the base 3 through the support frame 12. The air pump 5 is fixedly installed on the base 3 and is located between the hydrogen storage tank body 2 and the gas collecting tank 4, so as to facilitate the timely and rapid operation of the air pump 5.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A leakage detection mechanism for a solid-state hydrogen storage tank, comprising a hydrogen storage tank body (2), and an outer tank body (1) wrapped around the hydrogen storage tank body (2), characterized in that: A gas circulation cavity (17) is provided between the outer tank body (1) and the hydrogen storage tank body (2), the gas circulation cavity (17) is connected to a gas collecting component, and a detection component is provided on the outer side surface of the outer tank body (1); The detection assembly comprises a solid-state hydrogen detection device (6) and a detection tube (13); the solid-state hydrogen detection device (6) is engaged in a mounting and fixing frame (10); the mounting and fixing frame (10) is fixedly welded to the outer side of the outer tank body (1); one end of the detection tube (13) is connected to the solid-state hydrogen detection device (6) via a connecting bearing (14); the other end of the detection tube (13) passes through the outer tank body (1) and extends to the inside of the gas circulation cavity (17).

2. A leak detection mechanism for a solid-state hydrogen storage tank according to claim 1, characterized in that: The gas collection assembly comprises a gas collection tank (4) and a gas extraction pump (5); the gas collection tank (4) and the gas extraction pump (5) are connected via a collection pipe (21); and the gas extraction pump (5) is connected to the gas flow chamber (17) via a gas extraction pipe (20).

3. A leak detection mechanism for a solid-state hydrogen storage tank according to claim 2, characterized in that: The gas collecting end of the gas collecting tank (4) is connected through the collecting pipe (21), and the other end of the collecting pipe (21) is in communication with the gas outlet flange (19) on the air extraction pump (5).

4. A leak detection mechanism for a solid-state hydrogen storage tank according to claim 2, characterized in that: One end of the air extraction pipe (20) extends into the interior of the gas circulation cavity (17), and the other end of the air extraction pipe (20) is connected to the air extraction flange (18) on the air extraction pump (5).

5. The leak detection mechanism for a solid-state hydrogen storage tank according to claim 1, characterized in that: A connecting pipe (7) is arranged at the top of the outer tank body (1), one end of the connecting pipe (7) passes through the outer tank body (1) and the top end of the hydrogen storage tank body (2) and extends to the interior of the hydrogen storage tank body (2), and a valve (8) is installed at the other end of the connecting pipe (7).

6. A leak detection mechanism for a solid-state hydrogen storage tank according to claim 5, characterized in that: The contact portion between the connecting pipe (7) and the outer tank body (1) is wrapped with a sealing gasket (15), and the connecting pipe (7) is connected to an air intake pipe (9).

7. A leak detection mechanism for a solid-state hydrogen storage tank according to claim 5, characterized in that: The inner cavity of the hydrogen storage tank body (2) is welded with a plurality of groups of cross-arranged collision rods (16), and the bottom end of the hydrogen storage tank body (2) is mounted on the base (3) via supporting legs (11).

8. A leak detection mechanism for a solid-state hydrogen storage tank according to claim 7, characterized in that: The gas collecting tank (4) is mounted on another area of ​​the upper surface of the base (3) via a support frame (12); the air extraction pump (5) is fixedly mounted on the base (3) and is located between the hydrogen storage tank body (2) and the gas collecting tank (4).

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