Rapid pressure-relief explosion-proof mechanism of fuel cell

Abstract

The utility model relates to the technical field of fuel cell auxiliary mechanisms, in particular to a fuel cell quick pressure relief explosion-proof mechanism which comprises a protective box body and a flame-retardant assembly, pressure relief valves are symmetrically embedded in the left side and the right side of the protective box body, and a protective door is rotatably connected to the outer surface of the protective box body through hinges. A limiting groove is formed in the top of the protection box body; the fuel cell has the beneficial effects that through the arrangement of the hot melt adhesive sealing opening, the hot melt adhesive sealing opening can gradually start to melt along with the rise of the temperature in the protection box body when the fuel cell body accidentally generates a spontaneous combustion phenomenon during operation; therefore, the dry powder extinguishing agent stored in the dry powder extinguishing agent storage box can automatically fall down to achieve certain extinguishing and flame-retardant effects; therefore, the situation that the rescue time of a user is shortened or the disaster economic loss of the user is increased due to the fact that fire spreading cannot be stopped in time when the fuel cell protected by the pressure relief explosion-proof mechanism accidentally explodes and spontaneously combusts is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell auxiliary mechanisms, in particular to a rapid pressure relief and explosion-proof mechanism for a fuel cell. Background Art

[0002] A fuel cell is a chemical device that converts the chemical energy of a fuel directly into electrical energy, also known as an electrochemical generator. Since fuel cells convert the Gibbs free energy portion of the chemical energy of the fuel into electrical energy through an electrochemical reaction, they are not limited by the Carnot cycle effect and are therefore more efficient. In addition, fuel cells use fuel and oxygen as raw materials and have no mechanical transmission parts, so they emit very little harmful gas and have a long service life. However, fuel cells are easily disturbed during operation or charging and discharging, resulting in excessive internal pressure causing an explosion. Therefore, when making fuel cells, workers generally install a pressure relief and explosion-proof mechanism inside them to ensure the safety of the fuel cell during operation.

[0003] However, the current pressure relief and explosion-proof mechanism still has some shortcomings. For example, the existing pressure relief and explosion-proof mechanism has a poor flame retardant effect, which results in the failure to promptly prevent the spread of fire when the fuel cell protected by the pressure relief and explosion-proof mechanism accidentally explodes and spontaneously ignites. This can easily slow down the user's rescue time and increase the user's economic losses, resulting in certain usage defects. Utility Model Content

[0004] The utility model aims to provide a rapid pressure relief explosion-proof mechanism for a fuel cell 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 solution: it includes a protective box and a flame retardant component, wherein pressure relief valves are symmetrically embedded and installed on the left and right sides of the protective box, and the outer surface of the protective box is rotatably connected to a protective door through a hinge, and a limiting groove is provided on the top of the protective box, the flame retardant component is snap-fitted and installed on the top of the protective box, and a fuel cell body is movably installed on the bottom inner surface of the protective box, and a positioning component is slidably connected to the inner surface of the protective box, and a flame retardant dustproof heat dissipation net is embedded and installed on the left and right sides of the protective box.

[0006] Preferably, the flame retardant assembly includes a sealing plate, a dry powder fire extinguishing agent storage box, a hot melt adhesive sealing port, a positioning groove, a sealing cover and a connecting block, and the dry powder fire extinguishing agent storage box is fixedly installed on the bottom of the sealing plate, and the bottom of the dry powder fire extinguishing agent storage box is equidistantly arranged with hot melt adhesive sealing ports in an array, and a positioning groove is provided on the side of the dry powder fire extinguishing agent storage box, and a sealing cover is movably installed on the inner surface of the positioning groove, and connecting blocks are symmetrically installed on the left and right sides of the sealing cover.

[0007] Preferably, the outer dimensions of the sealing plate are completely consistent with the inner dimensions of the limiting groove, and the sealing plate forms a snap-fit ​​structure with the protective box body through the limiting groove.

[0008] Preferably, the outer dimensions of the sealing cover are completely consistent with the inner dimensions of the positioning groove, and the sealing cover forms a snap-fit ​​structure with the dry powder fire extinguishing agent storage box through the positioning groove.

[0009] Preferably, the positioning assembly includes a positioning plate, a threaded adjustment rod, a guide slider and a clamping plate, and the side of the positioning plate is rotatably connected to the threaded adjustment rod, and the guide slider is symmetrically installed on the bottom of the positioning plate, and the clamping plate is symmetrically installed on the other side of the positioning plate, and the side of the threaded adjustment rod is connected to the internal thread of the protective box.

[0010] Preferably, the bottom of the positioning plate is fixedly connected to the top of the guide slider, and the positioning plate forms a sliding structure with the protective box through the guide slider.

[0011] Preferably, the end of the clamping plate is fixedly connected to the side of the positioning plate, and the clamping plate and the positioning plate form a fixed structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model provides a hot melt adhesive sealing port, so that when the fuel cell body accidentally spontaneously ignites during operation, the hot melt adhesive sealing port can gradually begin to melt as the temperature in the protective box increases, so that the dry powder fire extinguishing agent stored in the dry powder fire extinguishing agent storage box can automatically fall down to achieve a certain fire extinguishing and flame retardant effect, thereby avoiding the situation where the fuel cell protected by the pressure relief explosion-proof mechanism accidentally explodes and spontaneously ignites and cannot prevent the spread of fire in time, resulting in a shortened rescue time for users or an increase in economic losses caused by the disaster. In addition, the provided limit grooves, sealing plates, positioning grooves, sealing covers and connecting blocks make it easy for staff to quickly disassemble and assemble the flame retardant components, thereby providing convenience for staff to add dry powder fire extinguishing agent to the dry powder fire extinguishing agent storage box.

[0014] 2. The utility model provides a guide slider so that when the user rotates the threaded adjustment rod, the positioning plate can move along the top of the protective box toward the side of the fuel cell body. Then, through the cooperation of the clamping plate, the positioning components on both sides can firmly fix the fuel cell body on the bottom inner surface of the protective box. Then, through the wiring port opened on the back of the protective box, it is convenient for the staff to perform wiring operations on the fuel cell body, thereby providing convenience for the staff's subsequent maintenance work. Moreover, through the provided pressure relief valve, the pressure inside the protective box can be quickly relieved when the pressure inside the protective box changes with the operation of the fuel cell body, thereby enhancing the safety of the fuel cell body when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the split three-dimensional structure of the protective box-sealing plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the disassembled three-dimensional structure of the protective box-dry powder fire extinguishing agent storage box of the utility model;

[0018] Figure 4 For the utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0019] In the figure: 1. Protective box; 2. Pressure relief valve; 3. Protective door; 4. Limiting groove; 5. Flame retardant component; 51. Sealing plate; 52. Dry powder fire extinguishing agent storage box; 53. Hot melt adhesive sealing port; 54. Positioning groove; 55. Sealing cover; 56. Connecting block; 6. Fuel cell body; 7. Positioning assembly; 71. Positioning plate; 72. Threaded adjustment rod; 73. Guide slider; 74. Clamping plate; 8. Flame retardant dustproof heat dissipation net. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of 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.

[0021] Embodiment 1

[0022] like Figure 1-Figure 4As shown, a fuel cell rapid pressure relief explosion-proof mechanism comprises a protective box 1 and a flame retardant component 5, the left and right sides of the protective box 1 are symmetrically embedded with pressure relief valves 2, and the outer surface of the protective box 1 is rotatably connected with a protective door 3 through a hinge, and a limiting groove 4 is provided on the top of the protective box 1, and the flame retardant component 5 is snap-fitted and installed on the top of the protective box 1, and the flame retardant component 5 comprises a sealing plate 51, a dry powder fire extinguishing agent storage box 52, a hot melt adhesive sealing port 53, a positioning groove 54, a sealing cover 55 and a connecting block 56, and a dry powder fire extinguishing agent storage box 52 is fixedly installed on the bottom of the sealing plate 51, the outer size of the sealing plate 51 is completely consistent with the inner size of the limiting groove 4, and the sealing plate 51 forms a snap-fit ​​structure with the protective box 1 through the limiting groove 4, and the flame retardant component 5 is configured as a snap-fit ​​structure through the sealing plate 51 and the protective box 1. It is convenient for the staff to quickly install it inside the protective box 1, and the bottom of the dry powder fire extinguishing agent storage box 52 is arranged with hot melt adhesive sealing ports 53 in an array at equal distances, and a positioning groove 54 is opened on the side of the dry powder fire extinguishing agent storage box 52, and a sealing cover 55 is movably installed on the inner surface of the positioning groove 54. The outer size of the sealing cover 55 is completely consistent with the inner size of the positioning groove 54, and the sealing cover 55 forms a snap-fit ​​structure with the dry powder fire extinguishing agent storage box 52 through the positioning groove 54. By setting the sealing cover 55 and the dry powder fire extinguishing agent storage box 52 in a snap-fit ​​structure, the sealing cover 55 is convenient for the staff to quickly disassemble and assemble, thereby providing convenience for the staff to add dry powder fire extinguishing agent, and connecting blocks 56 are symmetrically installed on the left and right sides of the sealing cover 55, and the fuel cell body 6 is movably installed on the bottom inner surface of the protective box 1.

[0023] Embodiment 2

[0024] like Figure 1-Figure 3As shown, the left and right sides of the protective box 1 are symmetrically embedded with a pressure relief valve 2, and the outer surface of the protective box 1 is rotatably connected to a protective door 3 through a hinge, and the bottom inner surface of the protective box 1 is movably installed with a fuel cell body 6, and the inner surface of the protective box 1 is slidably connected with a positioning assembly 7, the positioning assembly 7 includes a positioning plate 71, a threaded adjustment rod 72, a guide slider 73 and a clamping plate 74, and the side of the positioning plate 71 is rotatably connected with the threaded adjustment rod 72, and the bottom of the positioning plate 71 is symmetrically installed with a guide slider 73, the bottom of the positioning plate 71 is fixedly connected to the top of the guide slider 73, and the positioning plate 71 is connected to the protective box 1 through the guide slider 73. The sliding structure is formed by setting the positioning plate 71 and the protective box 1 as the sliding structure, so that the positioning plate 71 is more stable when moving along the inner surface of the protective box 1, and the other side of the positioning plate 71 is symmetrically installed with a clamping plate 74, and the end of the clamping plate 74 is fixedly connected to the side of the positioning plate 71, and the clamping plate 74 and the positioning plate 71 form a fixed structure. By setting the clamping plate 74 and the positioning plate 71 as the fixed structure, the clamping plate 74 will not get loose during auxiliary positioning, and at the same time, the side of the threaded adjustment rod 72 is connected to the internal thread of the protective box 1, and the left and right sides of the protective box 1 are embedded with a flame-retardant dust-proof heat dissipation net 8.

[0025] During actual use, the staff pours the dry powder fire extinguishing agent into the interior of the dry powder fire extinguishing agent storage box 52, and then installs the sealing cover 55 on the end of the dry powder fire extinguishing agent storage box 52 through the cooperation of the positioning groove 54, and then rotates the bolt to fix the connecting block 56 and the dry powder fire extinguishing agent storage box 52 to complete the installation of the sealing cover 55. Then the staff grasps the sealing plate 51 and installs the dry powder fire extinguishing agent storage box 52 into the interior of the protective box 1 through the cooperation of the limiting groove 4, and then rotates the bolt to complete the fixing of the flame retardant component 5. When the flame retardant component 5 is installed, the staff places the fuel cell body 6 into the interior of the protective box 1, and then the staff grasps the threaded adjustment rod 72 and drives it to rotate on the side of the positioning plate 71. At this time, through the threaded connection between the side of the threaded adjustment rod 72 and the inside of the protective box 1 and the guided sliding of the guide slider 73, the positioning plate 71 drives the clamping plate 74 to the fuel cell The main body 6 is clamped and fixed. When the fuel cell body 6 is fixed, the staff completes the wiring work of the fuel cell body 6 through the wiring port on the back of the protective box 1. Finally, the staff closes the protective door 3 by rotating the hinge and installs the mechanism together with the fuel cell to the required equipment. As the fuel cell body 6 runs, the pressure in the protective box 1 is prone to rise. At this time, the pressure relief valve 2 can quickly relieve the pressure inside the protective box 1, so as to improve the safety of the fuel cell body 6 when in use. However, when the fuel cell body 6 spontaneously ignites, the temperature in the protective box 1 will gradually rise. At this time, the hot melt adhesive sealing port 53 begins to gradually melt and drip, so that the dry powder fire extinguishing agent in the dry powder fire extinguishing agent storage box 52 automatically falls to the top of the fuel cell body 6 and the inner surface of the protective box 1, so as to achieve the purpose of flame retardancy and fire extinguishing, thereby making the fuel cell safer when in use.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fuel cell rapid pressure relief explosion-proof mechanism, comprising a protective box (1) and a flame retardant component (5), characterized in that: The left and right sides of the protective box (1) are symmetrically embedded with pressure relief valves (2), and the outer surface of the protective box (1) is rotatably connected to a protective door (3) through a hinge, and a limiting groove (4) is provided on the top of the protective box (1), the flame retardant component (5) is snap-fitted and installed on the top of the protective box (1), and a fuel cell body (6) is movably installed on the bottom inner surface of the protective box (1), and a positioning component (7) is slidably connected to the inner surface of the protective box (1), and a flame retardant dust-proof heat dissipation net (8) is embedded and installed on the left and right sides of the protective box (1).

2. A fuel cell rapid pressure relief explosion-proof mechanism according to claim 1, characterized in that: The flame retardant assembly (5) comprises a sealing plate (51), a dry powder fire extinguishing agent storage box (52), a hot melt adhesive sealing port (53), a positioning groove (54), a sealing cover (55) and a connecting block (56), wherein the dry powder fire extinguishing agent storage box (52) is fixedly mounted on the bottom of the sealing plate (51), and the bottom of the dry powder fire extinguishing agent storage box (52) is provided with hot melt adhesive sealing ports (53) in an array at equal distances, and a positioning groove (54) is provided on the side of the dry powder fire extinguishing agent storage box (52), and a sealing cover (55) is movably mounted on the inner surface of the positioning groove (54), and connecting blocks (56) are symmetrically mounted on the left and right sides of the sealing cover (55).

3. A fuel cell rapid pressure relief explosion-proof mechanism according to claim 2, characterized in that: The external dimensions of the sealing plate (51) are completely consistent with the internal dimensions of the limiting groove (4), and the sealing plate (51) forms a snap-fit ​​structure with the protective box body (1) via the limiting groove (4).

4. A fuel cell rapid pressure relief explosion-proof mechanism according to claim 2, characterized in that: The external dimensions of the sealing cover (55) are completely consistent with the internal dimensions of the positioning groove (54), and the sealing cover (55) forms a snap-fit ​​structure with the dry powder fire extinguishing agent storage box (52) via the positioning groove (54).

5. A fuel cell rapid pressure relief explosion-proof mechanism according to claim 1, characterized in that: The positioning assembly (7) comprises a positioning plate (71), a threaded adjustment rod (72), a guide slider (73) and a clamping plate (74), and the side of the positioning plate (71) is rotatably connected to the threaded adjustment rod (72), and the bottom of the positioning plate (71) is symmetrically installed with the guide slider (73), and the other side of the positioning plate (71) is symmetrically installed with the clamping plate (74), and the side of the threaded adjustment rod (72) is connected to the internal thread of the protective box (1).

6. A fuel cell rapid pressure relief explosion-proof mechanism according to claim 5, characterized in that: The bottom of the positioning plate (71) is fixedly connected to the top of the guide slider (73), and the positioning plate (71) forms a sliding structure with the protection box (1) through the guide slider (73).

7. A fuel cell rapid pressure relief explosion-proof mechanism according to claim 5, characterized in that: The end of the clamping plate (74) is fixedly connected to the side of the positioning plate (71), and the clamping plate (74) and the positioning plate (71) form a fixed structure.

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