Container type solid hydrogen storage device with self-leakage detection function

Abstract

The utility model relates to a container type solid hydrogen storage device with a self-leakage detection function, which comprises a box body, the inside of the box body is divided into a hydrogen storage chamber and a control chamber, at least one arc-shaped steel pipe is mounted on the outer top wall surface of the box body in a matched manner, and each arc-shaped steel pipe is communicated with the inner space of the hydrogen storage chamber; a first connecting pipe and a second connecting pipe are installed on one arc-shaped steel pipe in a matched mode, the end of the first connecting pipe is connected with an air inlet of an induced draft fan, an air outlet of the induced draft fan is communicated with the inner space of the hydrogen storage chamber through a third connecting pipe, and a condensation ring is installed on the outer circumferential face of the second connecting pipe in a matched mode. A first hydrogen concentration detector is mounted at the end of the second connecting pipe in a matched manner; and a second hydrogen concentration detector is mounted on the inner side wall surface of the control chamber in a matched manner. By arranging the arc-shaped steel pipe, the hydrogen concentration detector and the induced draft fan, the whole internal space of the box body can be comprehensively detected, whether hydrogen leakage occurs or not is automatically monitored in real time, and therefore the safety of the solid hydrogen storage device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy, in particular to a container-type solid-state hydrogen storage device with a self-leakage detection function. Background Art

[0002] Magnesium-based metal hydride hydrogen storage devices have the advantages of high mass hydrogen storage density, abundant reserves of raw magnesium and low cost. They are based on magnesium-based metal hydride and absorb or release hydrogen under certain pressure and temperature conditions, thereby completing the storage of hydrogen.

[0003] In existing technology, operators use handheld hydrogen leak detectors to conduct safety inspections on containerized magnesium-based metal hydride hydrogen storage devices to determine if any hydrogen leaks have occurred. However, because magnesium-based solid-state hydrogen storage devices require high-temperature heat exchange during the hydrogen absorption and desorption phases, manual inspections are difficult to detect hydrogen leaks throughout the entire device. This significantly reduces device safety and limits the application and development of containerized solid-state hydrogen storage devices. Utility Model Content

[0004] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a container-type solid-state hydrogen storage device with a self-leak detection function. By setting up an arc-shaped steel pipe, several connecting pipes, several hydrogen concentration detectors, and an induced draft fan, the entire internal space of the box can be fully inspected, and real-time automatic monitoring of whether hydrogen leakage occurs, thereby improving the safety of the solid-state hydrogen storage device.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A container-type solid-state hydrogen storage device with a self-leak detection function, comprising a hollow box body, the interior of the box body being divided into a mutually independent hydrogen storage chamber and a control chamber, at least one arc-shaped steel pipe being cooperatively mounted on the outer top wall of the box body, each arc-shaped steel pipe being in communication with the inner space of the hydrogen storage chamber, a first connecting pipe and a second connecting pipe being cooperatively mounted on one of the arc-shaped steel pipes, the end of the first connecting pipe being connected to the air inlet of an induced draft fan, the air outlet of the induced draft fan being in communication with the inner space of the hydrogen storage chamber via a third connecting pipe, a condensation ring being cooperatively mounted on the outer circumferential surface of the second connecting pipe, a first hydrogen concentration detector being cooperatively mounted on the end of the second connecting pipe, and a second hydrogen concentration detector being cooperatively mounted on the inner side wall of the control chamber, the second hydrogen concentration detector being used to detect the hydrogen concentration inside the control chamber;

[0007] Under the action of the induced draft fan, the high-temperature gas in the hydrogen storage chamber circulates between the hydrogen storage chamber and the arc-shaped steel pipe. The high-temperature gas that enters the second connecting pipe through the arc-shaped steel pipe is cooled by the condensation ring to obtain low-temperature gas, and then the hydrogen concentration in the low-temperature gas is detected by the first hydrogen concentration detector.

[0008] As a further improvement of the above technical solution:

[0009] An air path compartment is provided inside the control chamber, and hydrogen charging and discharging pipelines are installed inside the air path compartment.

[0010] Several hydrogen storage tanks are installed inside the hydrogen storage chamber, and each hydrogen storage tank is connected to a hydrogen charging and discharging pipeline, so that hydrogen is filled into the hydrogen storage tank through the hydrogen charging and discharging pipeline, or the hydrogen in the hydrogen storage tank is discharged through the hydrogen charging and discharging pipeline.

[0011] The second hydrogen concentration detector is installed in a control room outside the gas circuit cabin and is arranged toward the gas circuit cabin.

[0012] The control room is also equipped with a movable track, the output end of which is connected to an ultrasonic leak detector. The movable track drives the ultrasonic leak detector to move translationally along a set path, thereby detecting whether hydrogen leakage occurs inside the control room through the ultrasonic leak detector.

[0013] When multiple arc-shaped steel pipes are arranged, different arc-shaped steel pipes are connected to each other.

[0014] The gas temperature inside the hydrogen storage chamber is higher than the gas temperature inside the control chamber.

[0015] The inner wall surface of the hydrogen storage chamber is covered with a thermal insulation layer.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model has a compact and reasonable structure and is easy to operate. By arranging an arc-shaped steel pipe, several connecting pipes, several hydrogen concentration detectors, and an induced draft fan, the entire internal space of the box can be comprehensively inspected, and whether hydrogen leakage occurs can be automatically monitored in real time, thereby improving the safety of the solid-state hydrogen storage device; at the same time, by arranging an ultrasonic leak detector, the detection precision and accuracy can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the main view of the utility model.

[0019] Figure 2 It is a side view of the present utility model.

[0020] Figure 3 It is a schematic diagram of the structure inside the box body of the present invention.

[0021] Among them: 1. First hydrogen concentration detector; 2. Second hydrogen concentration detector; 3. Ultrasonic leak detector; 4. Insulation layer; 5. Box; 6. Hydrogen storage tank; 7. Hydrogen charging and discharging pipelines; 8. Induced draft fan; 9. Arc steel pipe; 10. Condensation ring; 11. First connecting pipe; 12. Second connecting pipe; 13. Third connecting pipe; 14. Moving track. DETAILED DESCRIPTION

[0022] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0023] The structure and functions of this utility model are as follows:

[0024] like Figure 1-Figure 3 As shown, a container-type solid-state hydrogen storage device with a self-leakage detection function includes a hollow box body 5, the interior of the box body 5 is divided into a hydrogen storage chamber and a control chamber that are independent of each other, and at least one arc-shaped steel pipe 9 is installed on the outer top wall of the box body 5. Each arc-shaped steel pipe 9 is connected to the internal space of the hydrogen storage chamber, and one of the arc-shaped steel pipes 9 is respectively installed with a first connecting pipe 11 and a second connecting pipe 12. The end of the first connecting pipe 11 is connected to the air inlet of the induced draft fan 8, and the air outlet of the induced draft fan 8 is connected to the internal space of the hydrogen storage chamber through the third connecting pipe 13. The outer diameter of the second connecting pipe 12 is 1 / 4 of the second connecting pipe 12. A condensation ring 10 is installed on the circumferential surface, a first hydrogen concentration detector 1 is installed at the end of the second connecting pipe 12, and a second hydrogen concentration detector 2 is installed on the inner wall of the control chamber. The second hydrogen concentration detector 2 is used to detect the hydrogen concentration inside the control chamber. Under the action of the induced draft fan 8, the high-temperature gas in the hydrogen storage chamber circulates between the hydrogen storage chamber and the arc-shaped steel pipe 9. The high-temperature gas entering the second connecting pipe 12 through the arc-shaped steel pipe 9 is cooled by the condensation ring 10 to obtain low-temperature gas, and then the hydrogen concentration in the low-temperature gas is detected by the first hydrogen concentration detector 1. By providing the arc-shaped steel pipe 9, several connecting pipes, several hydrogen concentration detectors, and the induced draft fan 8, the entire internal space of the box body 5 can be fully inspected, and whether hydrogen leakage occurs can be automatically monitored in real time, thereby improving the safety of the solid-state hydrogen storage device.

[0025] Since the density of hydrogen is less than that of air, the arc-shaped steel pipe 9 is arranged at the upper part of the hydrogen storage chamber and connected to its internal space; in addition, by providing an induced draft fan 8 to improve gas fluidity, the gas can flow at a low speed between the hydrogen storage chamber and the arc-shaped steel pipe 9, ensuring that the first hydrogen concentration detector 1 can detect leaked hydrogen more quickly, thereby improving the detection timeliness.

[0026] The control room is equipped with a gas path compartment, which is equipped with a hydrogen charging and discharging pipeline 7. Several hydrogen storage tanks 6 are installed in the hydrogen storage chamber, each connected to a hydrogen charging and discharging pipeline 7. Hydrogen is then charged into the hydrogen storage tank 6 through the hydrogen charging and discharging pipeline 7, and hydrogen in the hydrogen storage tank 6 is discharged through the hydrogen charging and discharging pipeline 7. The hydrogen storage tanks 6 and the hydrogen charging and discharging pipelines 7 are connected in parallel. A magnesium-based hydrogen storage material is placed inside each hydrogen storage tank 6, and hydrogen is charged and discharged through the magnesium-based hydrogen storage material.

[0027] The hydrogen charging and discharging pipeline 7 is used to connect to the external pipeline. When the solid-state hydrogen storage device needs to be charged with hydrogen, the hydrogen charging and discharging pipeline 7 is connected to the external hydrogen gas source through the first external pipe group, so that hydrogen is charged into each hydrogen storage tank 6 through the external hydrogen gas source; when the solid-state hydrogen storage device needs to discharge hydrogen, the hydrogen charging and discharging pipeline 7 is connected to the hydrogen-using equipment through the second external pipe group, so that hydrogen is provided to the external hydrogen-using equipment through the hydrogen storage tank 6.

[0028] The second hydrogen concentration detector 2 is installed in the control room outside the gas circuit compartment and is positioned toward the gas circuit compartment. When hydrogen leaks from the hydrogen storage tank 6 in the hydrogen storage chamber, it will leak into the control room through the hydrogen charging and discharging pipe 7. By positioning the second hydrogen concentration detector 2 toward the gas circuit compartment, it can ensure a rapid response.

[0029] A movable track 14 is also installed inside the control room. The output end of the movable track 14 is connected to the ultrasonic leak detector 3. The movable track 14 drives the ultrasonic leak detector 3 to move along a set path, thereby detecting whether there is a hydrogen leak inside the control room. The movable track 14 is a linear or circular automatic guide rail, which is used to move the ultrasonic leak detector 3 within the control room, facilitating the ultrasonic leak detector 3 to detect hydrogen concentrations at various locations within the control room.

[0030] When multiple curved steel pipes 9 are arranged, different curved steel pipes 9 are interconnected. By providing the curved steel pipes 9, the gas in the hydrogen storage chamber can be led to the outside of the hydrogen storage chamber for cooling, thereby enabling the first hydrogen concentration detector 1 to detect the hydrogen concentration therein.

[0031] The gas temperature inside the hydrogen storage chamber is higher than that inside the control chamber. The inner wall of the hydrogen storage chamber is covered with an insulation layer 4. The ambient temperature inside the control chamber is room temperature. The magnesium-based hydrogen storage material inside the hydrogen storage tank 6 requires a temperature above 280°C to charge or discharge hydrogen. The insulation layer 4 prevents heat loss within the hydrogen storage chamber, provides insulation, and reduces energy consumption.

[0032] The control room is internally also matched with an industrial computer, which can communicate with the first hydrogen concentration detector 1, the second hydrogen concentration detector 2 and the ultrasonic leak detector 3, so as to obtain the detection results of each object, and then determine whether hydrogen leakage occurs in the solid-state hydrogen storage device according to the detection results.

[0033] The working process of the utility model is as follows:

[0034] The industrial computer pre-stores a safety concentration threshold, and the safety concentration threshold comprises a first safety concentration threshold and a second safety concentration threshold; the first safety concentration threshold is used for comparison with the hydrogen concentration detected by the first hydrogen concentration detector 1 in real time, and the second safety concentration threshold is used for comparison with the hydrogen concentration detected by the second hydrogen concentration detector 2 in real time;

[0035] When the hydrogen concentration detected by the first hydrogen concentration detector 1 in real time is higher than the first safety concentration threshold, it indicates that hydrogen leakage occurs in the hydrogen storage chamber;

[0036] When the hydrogen concentration detected by the second hydrogen concentration detector 2 in real time is higher than the second safety concentration threshold or the ultrasonic leak detector 3 detects hydrogen leakage, it indicates that hydrogen leakage occurs in the control room;

[0037] When the industrial computer judges that hydrogen leakage occurs in the hydrogen storage chamber or hydrogen leakage occurs in the control room, the industrial computer sends a hydrogen valve closing instruction to close all hydrogen inlet valves; at the same time, the industrial computer sends an alarm to prompt the operator to leave.

[0038] The above description is an explanation of the utility model, not a limitation of the utility model, and the scope defined by the utility model is shown in the claims; within the protection scope of the utility model, any form of modification can be made.

Claims

1. A containerized solid-state hydrogen storage device with a self-leakage detection function, characterized in that: The invention comprises a hollow box (5), wherein the interior of the box (5) is divided into a hydrogen storage chamber and a control chamber which are independent of each other, at least one arc-shaped steel pipe (9) is installed on the outer top wall of the box (5), and each arc-shaped steel pipe (9) is connected to the internal space of the hydrogen storage chamber, wherein a first connecting pipe (11) and a second connecting pipe (12) are installed on one of the arc-shaped steel pipes (9), the end of the first connecting pipe (11) is connected to the air inlet of the induced draft fan (8), and the air outlet of the induced draft fan (8) is connected to the internal space of the hydrogen storage chamber through the third connecting pipe (13), a condensation ring (10) is installed on the outer circumferential surface of the second connecting pipe (12), and a first hydrogen concentration detector (1) is installed on the end of the second connecting pipe (12), and a second hydrogen concentration detector (2) is installed on the inner wall of the control chamber, and the second hydrogen concentration detector (2) is used to detect the hydrogen concentration inside the control chamber; Under the action of the induced draft fan (8), the high-temperature gas in the hydrogen storage chamber circulates between the hydrogen storage chamber and the arc-shaped steel pipe (9). The high-temperature gas enters the second connecting pipe (12) through the arc-shaped steel pipe (9) and is cooled by the condensation ring (10), thereby obtaining low-temperature gas. The hydrogen concentration in the low-temperature gas is then detected by the first hydrogen concentration detector (1).

2. The container-type solid-state hydrogen storage device with self-leakage detection function according to claim 1, characterized in that: An air path compartment is provided inside the control chamber, and a hydrogen charging and discharging pipeline (7) is installed in the air path compartment.

3. The container-type solid-state hydrogen storage device with self-leakage detection function according to claim 2, characterized in that: A plurality of hydrogen storage tanks (6) are installed in the hydrogen storage chamber, and each hydrogen storage tank (6) is connected to a hydrogen charging and discharging pipe (7), so that hydrogen is charged into the hydrogen storage tank (6) through the hydrogen charging and discharging pipe (7), or hydrogen in the hydrogen storage tank (6) is discharged through the hydrogen charging and discharging pipe (7).

4. The container-type solid-state hydrogen storage device with self-leakage detection function according to claim 2, characterized in that: The second hydrogen concentration detector (2) is installed in a control room outside the gas path chamber and is arranged toward the gas path chamber.

5. The container-type solid-state hydrogen storage device with self-leakage detection function according to claim 1, characterized in that: A movable track (14) is also installed inside the control room. The output end of the movable track (14) is connected to the ultrasonic leak detector (3). The movable track (14) drives the ultrasonic leak detector (3) to perform translational movement along a set path, thereby detecting whether hydrogen leakage occurs inside the control room through the ultrasonic leak detector (3).

6. The container-type solid-state hydrogen storage device with self-leakage detection function according to claim 1, characterized in that: When a plurality of arc-shaped steel pipes (9) are arranged, different arc-shaped steel pipes (9) are interconnected.

7. The container-type solid-state hydrogen storage device with self-leakage detection function according to claim 1, characterized in that: The gas temperature inside the hydrogen storage chamber is higher than the gas temperature inside the control chamber.

8. The container-type solid-state hydrogen storage device with self-leakage detection function according to claim 1, characterized in that: The inner wall surface of the hydrogen storage chamber is covered with a thermal insulation layer (4).

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