Hydrogen leakage monitoring device
By designing a sealing basket structure driven by cross plates and electric push rods on the hydrogen fuel cell, the problem of poor heat dissipation of hydrogen fuel cell is solved, and sealing during hydrogen leakage and opening during heat dissipation is achieved, ensuring safe and efficient operation.
Patent Information
- Application Number
- CN202421217911.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The existing hydrogen fuel cells have poor heat dissipation properties, resulting in poor heat dissipation performance during use.
A hydrogen leakage monitoring device is designed, including a horizontally arranged horizontal plate and mounting frame, and the sealing basket is driven by an electric push rod to seal and open the hydrogen fuel cell. Combined with a hydrogen sensor and a controller, it realizes sealing during hydrogen leakage and opening during heat dissipation.
When hydrogen leaks, it effectively seals hydrogen to prevent explosion risk, and ensures good heat dissipation performance of hydrogen fuel cells when there is no leakage, avoiding the problem of poor heat dissipation.
Smart Images
Figure CN223065265U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hydrogen fuel cell leakage detection devices, and particularly relates to a hydrogen leakage monitoring device. Background Art
[0002] Hydrogen fuel cells have the advantages of environmental protection, high efficiency, and fast charging. Therefore, hydrogen fuel cells are used in fields such as buses and cars. Hydrogen fuel cells have higher environmental protection performance and lower operating cost performance.
[0003] When hydrogen fuel cells are used in the fields of automobiles and hydrogen energy buses, it is necessary to monitor hydrogen. By monitoring hydrogen, leakage can be detected as early as possible, and the performance and reaction degree of the fuel cell stack can be analyzed in real time, so as to timely adjust relevant input indicators or data configurations to achieve the safe and efficient operation of the vehicle. When a hydrogen fuel cell leaks, the explosion limit of hydrogen in the air is 4% - 75%. Compared with other combustible gases, it is easy to accumulate and form an explosive mixture. Therefore, after hydrogen leakage, any operations and activities related to hydrogen should be immediately stopped and sealed to prevent air from contacting hydrogen.
[0004] Therefore, in current existing hydrogen monitoring devices, to prevent the leaked hydrogen of the hydrogen fuel cell from contacting air, the hydrogen fuel cell is placed in a box. The top of the box is a ventilated position. If hydrogen leaks later, a sealing cover plate is provided at the top of the box, and the top of the box is sealed by moving the sealing cover plate, so that the hydrogen fuel cell can be sealed in the box, avoiding the combination of the leaked hydrogen and the external air, thus avoiding explosion. However, when there is no leakage, the hydrogen fuel cell can only dissipate heat and ventilate through the top of the box, and the surrounding of the hydrogen fuel cell is in a closed state, resulting in poor heat dissipation performance during the use of the hydrogen fuel cell. Summary of the Utility Model
[0005] According to the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a hydrogen leakage monitoring device, which solves the problem of poor heat dissipation of the hydrogen fuel cell.
[0006] The hydrogen leakage monitoring device includes a horizontally arranged cross plate. An installation frame in a "door" - shaped structure is arranged on the top of the cross plate, and both ends of the installation frame are fixed on the top of the cross plate. A sealing basket for covering the periphery and the top of the hydrogen fuel cell is arranged between the inner top of the installation frame and the cross plate, and the opening of the sealing basket faces downward. An electric push rod for driving the sealing basket to move downward to seal the hydrogen fuel cell on the cross plate is arranged between the inner top of the installation frame and the sealing basket. A hydrogen sensor for monitoring hydrogen is installed on the inner top of the sealing basket. A controller and an alarm are installed on the installation frame. The hydrogen sensor is electrically connected to the controller, and the controller is electrically connected to the electric push rod and the alarm respectively.
[0007] Further, an outer shell for protecting the controller is sleeved outside the controller, and the outer shell is installed on the inner side wall of the mounting rack.
[0008] Further, a groove for the sealing basket to be embedded after moving downward is formed at the top of the cross plate.
[0009] Further, a rubber pad is arranged at the bottom of the groove.
[0010] Further, a plurality of wire passing holes for the cables of the hydrogen fuel cell to pass through are formed in the cross plate, and the wire passing holes communicate up and down; an installation plate in an inverted "door" shape structure is installed at the bottom of the cross plate.
[0011] Further, flanges are arranged on the left and right side walls of the installation plate, and a plurality of thread holes communicating up and down are formed in the flanges, and screws in threaded fit with the thread holes are inserted into the thread holes.
[0012] Further, sealing rings are arranged on the pore walls of the wire passing holes.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] In the utility model, the hydrogen fuel cell is installed on the cross plate, and then the mounting rack is installed at the top of the cross plate. The sealing basket is installed on the mounting rack through the electric push rod. When the electric push rod drives the sealing basket to move downward, the sealing basket and the cross plate can cover the periphery of the hydrogen fuel cell, so that when hydrogen leaks, the hydrogen leakage can be avoided; when the electric push rod drives the sealing basket to move upward, the periphery and the top of the hydrogen fuel cell are not blocked, so that the heat dissipation performance of the hydrogen fuel cell is improved, and the problem of poor heat dissipation of the hydrogen fuel cell in the prior art is avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the utility model;
[0016] Figure 2 is Figure 1 the sectional structural diagram at A-A in
[0017] Figure 3 is Figure 1 the front view structural diagram;
[0018] Figure 4 is the control flow chart of the present utility model;
[0019] Names of components in the figure: 1. Mounting frame; 2. Electric push rod; 3. Hydrogen sensor; 4. Sealing basket; 5. Mounting plate; 6. Horizontal plate; 7. Rubber pad; 8. Groove; 9. Flange; 10. Screw; 11. Battery; 12. Alarm; 13. Controller; 14. Shell. Specific implementation mode
[0020] The present utility model will be further described below with reference to the accompanying drawings through specific embodiments, but it is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present invention. Embodiment
[0021] A hydrogen leakage monitoring device described in this embodiment, as Figure 1 and Figure 3 shown, includes a horizontally arranged horizontal plate 6. A mounting frame 1 with a "door" - shaped structure is arranged on the top of the horizontal plate 6, and both ends of the mounting frame 1 are fixed on the top of the horizontal plate 6. When installing a hydrogen fuel cell, the hydrogen fuel cell is installed on the top of the horizontal plate 6 and inside the mounting frame 1.
[0022] As Figure 1 and Figure 2 shown, a sealing basket 4 for covering the periphery and top of the hydrogen fuel cell is arranged between the inner top of the mounting frame 1 and the horizontal plate 6, and the sealing basket 4 has an opening facing downwards. An electric push rod 2 for driving the sealing basket 4 to move downwards to seal the hydrogen fuel cell on the horizontal plate 6 is arranged between the inner top of the mounting frame 1 and the sealing basket 4. The electric push rod 2 is a known prior art, which is a power - driven device that converts the rotary motion of a motor into the linear reciprocating motion of a push rod. When specifically installing the electric push rod 2, the push rod head of the electric push rod 2 is fixed on the outer top of the sealing basket 4, and the push rod tail of the electric push rod 2 is fixed on the inner top of the mounting frame 1. Because the electric push rod 2 is fixed on the sealing basket 4, when the electric push rod 2 is opened, the electric push rod 2 can drive the sealing basket 4 to move up and down. When the sealing basket 4 moves downwards, the sealing basket 4 can be sleeved outside the hydrogen fuel cell. Then, when the bottom of the sealing basket 4 contacts the top of the horizontal plate 6, a sealing cavity for sealing the hydrogen fuel cell is formed between the sealing basket 4 and the horizontal plate 6. When hydrogen leaks, it is possible to avoid hydrogen leakage from between the sealing basket 4 and the horizontal plate 6 as much as possible. When the electric push rod 2 drives the sealing basket 4 to move upwards, the hydrogen fuel cell is exposed outside the sealing basket 4, and at this time, the periphery and top of the hydrogen fuel cell are not blocked, so it is convenient to dissipate heat from the hydrogen fuel cell.
[0023] As Figure 1 and Figure 2As shown in the figure, a groove 8 for the sealed basket 4 to be embedded after moving downward is opened at the top of the horizontal plate 6. Through the design of the groove 8, when the electric push rod 2 drives the sealed basket 4 to move downward to enclose the hydrogen fuel cell, at this time, the bottom of the sealed basket 4 moves into the groove 8. In this way, when the sealed basket 4 and the horizontal plate 6 seal the hydrogen fuel cell, it is possible to better isolate the external air from entering the sealed cavity formed between the sealed basket 4 and the horizontal plate 6;
[0024] As Figure 1 shown in the figure, a rubber pad 7 is arranged at the bottom of the groove 8. Through the design of the rubber pad 7, the friction force can be increased when the sealed basket 4 contacts the groove 8, thereby improving the sealing performance between the sealed basket 4 and the groove 8;
[0025] As Figure 1 and Figure 4 shown in the figure, a hydrogen sensor 3 for monitoring hydrogen is installed at the inner top of the sealed basket 4; a controller 13 and an alarm 12 are installed on the mounting bracket 1; the hydrogen sensor 3 is electrically connected to the controller 13, and the controller 13 is electrically connected to the electric push rod 2 and the alarm 12 respectively; the hydrogen sensor 3 is connected to the controller 13 through a cable, and the controller 13 is also connected to the electric push rod 2 and the alarm 12 through cables respectively; the hydrogen sensor 3 is a known prior art. The hydrogen sensor 3 can not only be used to monitor the hydrogen leakage of the hydrogen fuel cell, but also be used to detect the hydrogen concentration in the exhaust gas; at the same time, a battery 11 is installed on the mounting bracket 1, and the battery 11 is used to supply power to the electric push rod 2 and the alarm 12; during use, if the hydrogen sensor 3 detects hydrogen leakage, the monitored signal is transmitted to the controller 13, and the controller 13 then reacts the signal to the alarm 12 and the electric push rod 2. At this time, the electric push rod 2 starts, drives the sealed basket 4 to move downward to enclose the hydrogen fuel cell, and at this time, the hydrogen fuel cell is sealed between the sealed basket 4 and the horizontal plate 6 to prevent the leaked hydrogen from mixing with the external air; at the same time, the alarm 12 sounds to notify the situation of hydrogen leakage;
[0026] As Figure 1 and Figure 3 shown in the figure, a housing 14 for protecting it is sleeved outside the controller 13, and the housing 14 is installed on the inner side wall of the mounting bracket 1. Through the design of the housing 14, the safety of the controller 13 is protected as much as possible, and the service life of the controller 13 is extended;
[0027] In the specific use process: first, the hydrogen fuel cell is installed on the top of the horizontal plate 6, and then the design is installed in a car or a bus; when hydrogen leakage occurs, the hydrogen sensor 3 transmits a signal to the electric push rod 2, and the electric push rod 2 drives the sealing basket 4 to move downward to seal the hydrogen leaked from the hydrogen fuel cell, thereby avoiding the problem of hydrogen explosion as much as possible; when hydrogen does not leak, the electric push rod 2 drives the sealing basket 4 to be located above the hydrogen fuel cell, and at this time the surroundings and top of the hydrogen fuel cell are not blocked, thereby facilitating the heat dissipation of the hydrogen fuel cell, avoiding the problem of poor heat dissipation performance caused by placing the hydrogen fuel cell in a box in the prior art. Example
[0028] This embodiment further illustrates the technology. Figure 1 and Figure 3 As shown, the horizontal plate 6 is provided with a plurality of threading holes for the hydrogen fuel cell cables to pass through, and the threading holes are connected from top to bottom; a mounting plate 5 in the shape of an inverted "door" is installed at the bottom of the horizontal plate 6; when in use, the mounting plate 5 is fixed in a car or a bus, and the hydrogen fuel cell cables first pass through the threading holes, and then pass through the gap between the horizontal plate 6 and the mounting plate 5, so the design of the threading holes facilitates the arrangement of the hydrogen fuel cell cables, and also facilitates the installation of the hydrogen fuel cell cables;
[0029] A sealing ring is provided on the wall of the threading hole. Through the design of the sealing ring, when hydrogen leaks, the leaked hydrogen is prevented from leaking from the threading hole as much as possible;
[0030] like Figure 1 and Figure 2 As shown, flanges 9 are provided on the left and right side walls of the mounting plate 5, and a plurality of threaded holes which are connected to each other from top to bottom are opened on the flanges 9, and screws 10 which are threadedly matched therewith are passed through the threaded holes. When the mounting plate 5 is installed, the flanges 9 can be fixed by the screws 10, so as to fix the mounting plate 5, and it is also convenient to disassemble the mounting plate 5 later; thus, the design of the flanges 9 and the screws 10 facilitates the disassembly and installation of the mounting plate 5.
Claims
1. A hydrogen leakage monitoring device, comprising a horizontally arranged cross plate (6), characterized in that: At the top of the horizontal plate (6), there is an installation frame (1) in a "door" - shaped structure, and both ends of the installation frame (1) are fixed to the top of the horizontal plate (6); between the inner top of the installation frame (1) and the horizontal plate (6), there is a sealing basket (4) used to cover the periphery and top of the hydrogen fuel cell, and the sealing basket (4) has an opening facing downwards; between the inner top of the installation frame (1) and the sealing basket (4), there is an electric push rod (2) used to drive the sealing basket (4) to move downwards to seal the hydrogen fuel cell on the horizontal plate (6); at the inner top of the sealing basket (4), there is a hydrogen sensor (3) used to monitor hydrogen; on the installation frame (1), there are a controller (13) and an alarm (12); the hydrogen sensor (3) is electrically connected to the controller (13), and the controller (13) is respectively electrically connected to the electric push rod (2) and the alarm (12).
2. The hydrogen leakage monitoring device according to claim 1, wherein: A housing (14) for protecting it is sleeved outside the controller (13), and the housing (14) is installed on the inner side wall of the installation frame (1).
3. The hydrogen leakage monitoring device according to claim 1, characterized in that: A groove (8) for the sealing basket (4) to be embedded after moving downwards is opened at the top of the horizontal plate (6).
4. The hydrogen leakage monitoring device according to claim 3, wherein: A rubber pad (7) is arranged at the bottom of the groove (8).
5. The hydrogen leakage monitoring device according to claim 1, characterized in that: A number of wire - passing holes for the cables of the hydrogen fuel cell to pass through are opened on the horizontal plate (6), and the wire - passing holes communicate up and down; at the bottom of the horizontal plate (6), there is an installation plate (5) in an inverted "door" - shaped structure.
6. The hydrogen leakage monitoring device according to claim 5, characterized in that: Flanges (9) are arranged on the left and right side walls of the installation plate (5), and a number of vertically - communicating threaded holes are opened on the flanges (9), and screws (10) in threaded fit with them are inserted into the threaded holes.
7. The hydrogen leakage monitoring device according to claim 5, wherein: Sealing rings are arranged on the hole walls of the wire - passing holes.