A pressure relief device for a hydrogen fuel power generation vehicle

Abstract

This application relates to the field of hydrogen fuel power generation, and particularly to a pressure relief device for a hydrogen fuel power generation vehicle, which includes a multi-layer hydrogen power generation device provided on the hydrogen fuel power generation vehicle. The hydrogen power generation device is a rectangular cavity surrounded by multiple enclosing plates, and the reaction of hydrogen fuel occurs inside the rectangular cavity. A first pressure relief port is opened at the same end of multiple hydrogen power generation devices, and a pressure relief chamber is provided at one end of multiple hydrogen power generation devices close to the first pressure relief port. The inside of the pressure relief chamber is communicated with the inside of the hydrogen power generation device, and a second pressure relief port is opened at the upper end of the pressure relief chamber. It is characterized in that: a pressure relief rotating plate is rotatably provided on the first pressure relief port, and the pressure relief rotating plate is adapted to the first pressure relief port. This application has the effect of improving the problem of the pressure relief plate blocking the pressure relief channel during the pressure relief process.

Description

Technical Field

[0001] This application relates to the field of hydrogen fuel power generation, and particularly to a pressure relief device for a hydrogen fuel power generation vehicle. Background Art

[0002] In fields such as power interruption, sudden accidents, or temporary power supply at specific sites, mobile emergency power generation vehicles are an effective power supply method. Currently, the main power supply method based on mobile emergency power generation vehicles is the diesel generator set power supply method, which has high noise and is prone to causing environmental pollution. To address the above defects, various new energy mobile emergency power generation vehicles have emerged in recent years.

[0003] As a new generation of clean energy, fuel cell power generation technology based on hydrogen energy has been widely recognized globally. Currently, there are mature cases of emergency power generation vehicles using this system in fields such as backup power supplies for communication. When promoting and applying a new energy system, its safety performance needs to be considered first. Due to the characteristics of hydrogen being flammable, explosive, and volatile, it is difficult to avoid hydrogen leakage during transportation, storage, and use. Therefore, active protection after leakage is extremely important.

[0004] Currently, a reaction chamber for hydrogen fuel is usually provided inside the power generation device of a hydrogen fuel power generation vehicle. The reaction chamber is surrounded by multiple enclosure plates. A pressure relief port is opened on one of the enclosure plates on the side of the reaction chamber, and a pressure relief plate is fixedly connected to the pressure relief port. The connection between the pressure relief plate and the enclosure plate is a single weak point connection. When an explosion occurs inside the power generation device, the internal shock wave can push the pressure relief plate outwards; a pressure relief channel is provided on one side of the reaction chamber, and after an explosion, the pressure can be discharged through the pressure relief channel.

[0005] Regarding the above related technologies, the inventor believes that there is a problem that when an explosion occurs, the pressure relief plate will be impacted by the shock wave into the pressure relief channel, making the pressure relief channel prone to blockage, resulting in the pressure relief airflow not being able to be discharged from the power generation device as soon as possible. Summary of the Invention

[0006] In order to improve the problem of the pressure relief plate blocking the pressure relief channel during the pressure relief process, this application provides a pressure relief device for a hydrogen fuel power generation vehicle.

[0007] A pressure relief device for a hydrogen fuel power generation vehicle provided by this application adopts the following technical solutions:

[0008] A pressure relief device for a hydrogen fuel power generation vehicle, comprising a multi-layer hydrogen power generation device arranged on the hydrogen fuel power generation vehicle. The hydrogen power generation device is a rectangular cavity surrounded by multiple enclosing plates, and the reaction of hydrogen fuel occurs inside the rectangular cavity. The same end of multiple hydrogen power generation devices is provided with a first pressure relief port, and a pressure relief chamber is arranged at one end of multiple hydrogen power generation devices close to the first pressure relief port. The inside of the pressure relief chamber is communicated with the inside of the hydrogen power generation device. A second pressure relief port is arranged at the upper end of the pressure relief chamber. A pressure relief rotating plate is rotatably arranged on the first pressure relief port, and the pressure relief rotating plate is adapted to the first pressure relief port.

[0009] By adopting the above technical solution, the rotatably arranged pressure relief rotating plate of the present application, when an explosion accident occurs inside the working space of the hydrogen power generation device, the gas inside the space expands sharply, and the shock wave generated after the explosion can act on the surface of the pressure relief rotating plate. Under the action of the shock wave, the pressure relief rotating plate rotates, and the pressure relief air flow inside the hydrogen power generation device can flow into the pressure relief chamber, avoiding blockage of the inside of the pressure relief chamber after the pressure relief rotating plate is impacted, enabling the pressure relief air flow inside the hydrogen power generation device to be discharged through the second pressure relief port, and avoiding damage to the hydrogen power generation device and the power generation vehicle.

[0010] Optionally, a rotating shaft is fixedly connected to the side of the pressure relief rotating plate close to the inside of the hydrogen power generation device, and both ends of the rotating shaft are rotatably connected to the enclosing plates.

[0011] By adopting the above technical solution, the rotating shaft fixedly connected to the pressure relief rotating plate enables the pressure relief rotating plate to be fully opened under the impact of the explosion shock wave, and enables the rotation between the pressure relief rotating plate and the enclosing plate to be smoother, avoiding the pressure relief rotating plate being stuck on the enclosing plate and unable to be opened smoothly.

[0012] Optionally, a pair of fixing blocks are fixedly connected to the inner wall of the enclosing plate at the positions of both ends of the rotating shaft. The end of the rotating shaft penetrates through the fixing blocks, and the end of the rotating shaft is rotatably connected to the fixing blocks.

[0013] By adopting the above technical solution, the provided fixing blocks can, on the one hand, reduce the friction between the two, making the rotation between the pressure relief rotating plate and the enclosing plate smoother, and on the other hand, can provide support for the pressure relief rotating plate.

[0014] Optionally, the rotating shaft is vertically arranged, and the length direction of the rotating shaft is perpendicular to the length direction of the pressure relief rotating plate.

[0015] By adopting the above technical solution, the rotating shaft arranged perpendicular to the length direction of the pressure relief rotating plate can, under the action of the explosion shock wave, enable the pressure relief rotating plate to be fully opened, so that the pressure relief air flow inside the hydrogen power generation device can quickly flow into the pressure relief chamber, avoiding that when the length direction of the rotating shaft is the same as the length direction of the pressure relief rotating plate, after the pressure relief rotating plate is opened, it is easily affected by the gravity of the pressure relief rotating plate and the pressure relief rotating plate rotates back to the first pressure relief port again.

[0016] Optionally, a limiting member for restricting the rotation of the pressure relief rotating plate is provided outside the first pressure relief port.

[0017] By adopting the above technical solution, the provided limiting member can restrict the rotation of the pressure relief rotating plate. When the hydrogen power generation device is working normally, the pressure relief rotating plate will not rotate easily, preventing the gas outside the hydrogen power generation device from entering the inside of the hydrogen power generation device. When an explosion occurs inside the hydrogen power generation device, the pressure relief rotating plate can push open the limiting member, enabling the pressure relief rotating plate to open smoothly.

[0018] Optionally, the limiting member includes a limiting plate fixedly connected to the side edge in the length direction of the first pressure relief port. The width direction of the limiting plate is the same as the width direction of the pressure relief rotating plate, and the limiting plate is fixedly connected to the outside of the first pressure relief port away from the rotating shaft.

[0019] By adopting the above technical solution, the provided limiting plate has a simpler structure, is convenient for production and processing, and does not require additional other structures to restrict the rotation of the pressure relief rotating plate, saving resources and avoiding the use of too many other limiting members that may affect the operation of the hydrogen power generation device.

[0020] Optionally, a pair of limiting plates are symmetrically arranged on both side edges in the length direction of the first pressure relief port.

[0021] By adopting the above technical solution, the provided pair of limiting plates are not easily opened. Only when the gas pressure inside the hydrogen power generation device reaches a certain level can both limiting plates be pushed open.

[0022] Optionally, a relief groove is provided on the outside of the pressure relief rotating plate away from the rotating shaft and at the position of the two limiting plates, and the limiting plate can be embedded in the relief groove.

[0023] By adopting the above technical solution, the provided relief groove allows the limiting plate to be embedded in the relief groove, avoiding interference between the pressure relief rotating plate and the limiting plate, which may affect the normal rotation of the pressure relief rotating plate, and enabling the inner and outer side surfaces of the pressure relief rotating plate and the surrounding plate to be flush.

[0024] Optionally, fracture grooves are provided at the positions where the two limiting plates are fixedly connected to the first pressure relief port.

[0025] By adopting the above technical solution, when an explosion accident occurs inside the hydrogen power generation device, the pressure relief rotating plate will be impacted by the shock wave and squeeze the limiting plate. The provided fracture grooves make the connection between the limiting plate and the first pressure relief port thinner, so that the limiting plate can break more quickly, avoiding affecting the opening of the pressure relief rotating plate.

[0026] Optionally, a pressure relief rotating plate is also rotatably provided on the second pressure relief port.

[0027] By adopting the above technical solution, a pressure relief rotating plate is arranged at the second pressure relief port. After an explosion accident occurs inside the hydrogen power generation device, the pressure relief airflow can first flow into the pressure relief chamber. When the pressure inside the pressure relief chamber is too high, the pressure relief rotating plate on the second pressure relief port can be opened, so as to discharge the pressure relief airflow outdoors.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. For the rotationally arranged pressure relief rotating plate of the present application, when an explosion accident occurs inside the working space of the hydrogen power generation device, the gas inside the space expands sharply, and the shock wave generated after the explosion can act on the surface of the pressure relief rotating plate. Under the action of the shock wave, the pressure relief rotating plate rotates, and the pressure relief airflow inside the hydrogen power generation device can flow into the pressure relief chamber, preventing the pressure relief rotating plate from being blocked inside the pressure relief chamber after being impacted, enabling the pressure relief airflow inside the hydrogen power generation device to be discharged through the second pressure relief port, and avoiding damage to the hydrogen power generation device and the power generation vehicle;

[0030] 2. The arranged limiting plate has a simpler structure, is convenient for production and processing, and does not require additional structures to limit the rotation of the pressure relief rotating plate, saving resources and avoiding excessive use of other limiting parts, which may affect the operation of the hydrogen power generation device;

[0031] 3. The arranged fracture groove makes the connection between the limiting plate and the first pressure relief port thinner, so that the limiting plate can break more quickly, avoiding affecting the opening of the pressure relief rotating plate. Description of the Drawings

[0032] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0033] Figure 2 is the schematic diagram showing the hydrogen power generation device in the embodiment of the present application;

[0034] Figure 3 is the cross-sectional view showing the fixing block and the rotating shaft in the embodiment of the present application;

[0035] Figure 4 is Figure 3 the enlarged schematic diagram at A in

[0036] Description of the reference numerals: 1. Hydrogen power generation device; 11. Enclosure; 12. First pressure relief port; 2. Pressure relief chamber; 21. Second pressure relief port; 3. Pressure relief rotating plate; 31. Rotating shaft; 32. Yielding groove; 4. Fixing block; 5. Limiting plate; 51. Fracture groove. Detailed Description of the Embodiment

[0037] The following will Figures 1-4 further describe the present application in detail with reference to the attached

[0038] Refer toFigure 1 and Figure 2 , a pressure relief device for a hydrogen fuel power generation vehicle includes a hydrogen power generation device 1 provided on the hydrogen fuel power generation vehicle. Multiple groups of the hydrogen power generation devices 1 are provided and stacked vertically together. The hydrogen power generation device 1 is a rectangular cavity, and hydrogen fuel reacts inside the rectangular cavity. The hydrogen power generation device 1 is surrounded by multiple enclosing plates 11. At the same end of multiple hydrogen power generation devices 1, a rectangular first pressure relief port 12 is opened. Outside the first pressure relief port 12 of multiple hydrogen power generation devices 1, a pressure relief chamber 2 is vertically fixedly connected. The pressure relief chamber 2 is communicated with the inside of multiple hydrogen power generation devices 1. A second pressure relief port 21 is opened on the pressure relief chamber 2, and the second pressure relief port 21 is communicated with the outside of the power generation vehicle.

[0039] The embodiment of the present application discloses a pressure relief device for a hydrogen fuel power generation vehicle. Refer to Figure 1 and Figure 2 , the pressure relief device for a hydrogen fuel power generation vehicle includes a pressure relief rotating plate 3 rotatably provided on the first pressure relief port 12. The pressure relief rotating plate 3 is the same size as the first pressure relief port 12, and the pressure relief rotating plate 3 can be installed on the first pressure relief port 12. When an explosion accident occurs inside the working space of the hydrogen power generation device 1, the gas inside the space expands sharply, and the shock wave generated after the explosion can act on the surface of the pressure relief rotating plate 3. Under the action of the shock wave, the pressure relief rotating plate 3 rotates, and the pressure relief air flow inside the hydrogen power generation device 1 can flow into the pressure relief chamber 2 and then be discharged through the second pressure relief port 21, avoiding damage to the hydrogen power generation device 1 and the power generation vehicle.

[0040] Refer to Figure 2 and Figure 3 , on the surface of the pressure relief rotating plate 3 located inside the hydrogen power generation device 1, a vertically arranged rotating shaft 31 is fixedly connected. The length direction of the rotating shaft 31 is perpendicular to the length direction of the pressure relief rotating plate 3, and the rotating shaft 31 can be fixed at the middle position in the length direction of the pressure relief rotating plate 3 or can be eccentrically fixed to the pressure relief rotating plate 3. When the fixing position of the rotating shaft 31 and the pressure relief rotating plate 3 is eccentrically arranged, the pressure relief rotating plate 3 does not interfere with the inner wall of the pressure relief chamber 2 after being opened; both ends of the rotating shaft 31 are rotatably connected to the enclosing plate 11.

[0041] Further, on the inner wall of the enclosing plate 11 and at both ends of the rotating shaft 31, a pair of fixing blocks 4 are symmetrically fixedly connected. Both ends of the rotating shaft 31 pass through the fixing blocks 4, and the end of the rotating shaft 31 is rotatably connected to the fixing blocks 4. The provided fixing blocks 4 can, on the one hand, reduce the friction between the two, making the rotation of the pressure relief rotating plate 3 and the enclosing plate 11 smoother, and on the other hand, can provide support for the pressure relief rotating plate 3.

[0042] A limiting member is provided on the enclosing plate 11 outside the first pressure relief port 12. The provided limiting member can limit the rotation of the pressure relief rotating plate 3. When the hydrogen power generation device 1 is operating normally inside, the pressure relief rotating plate 3 will not rotate easily, preventing the gas outside the hydrogen power generation device 1 from entering the inside of the hydrogen power generation device 1. When an explosion occurs inside the hydrogen power generation device 1, the pressure relief rotating plate 3 can push open the limiting member, enabling the pressure relief rotating plate 3 to open smoothly.

[0043] The limiting member includes a pair of rectangular limiting plates 5 fixedly connected to the first pressure relief port 12. The two limiting plates 5 are fixedly connected to the side edges in the two length directions of the first pressure relief port 12, and the two limiting plates 5 are located outside the first pressure relief port 12 away from the rotating shaft 31. The two limiting plates 5 are integrally formed with the enclosing plate 11. The length direction of the two limiting plates 5 is the same as the length direction of the first pressure relief port 12, and the width direction of the two limiting plates 5 is the same as the width direction of the pressure relief rotating plate 3. The provided limiting plates 5 have a simpler structure, are convenient for production and processing, and do not require additional other structures to limit the rotation of the pressure relief rotating plate 3, saving resources and avoiding the use of too many other limiting members, which may affect the operation of the hydrogen power generation device 1.

[0044] Refer to Figure 3 and Figure 4 In the position of the outer surface of the pressure relief rotating plate 3 close to the outside of the limiting plate 5, a relief groove 32 is provided. The length direction of the relief groove 32 is the same as the length direction of the pressure relief rotating plate 3. The provided relief groove 32 can allow the limiting plate 5 to be embedded in the relief groove 32, avoiding interference between the pressure relief rotating plate 3 and the limiting plate 5, which may affect the normal rotation of the pressure relief rotating plate 3, and enabling the inner and outer side surfaces of the pressure relief rotating plate 3 and the enclosing plate 11 to be flush.

[0045] Furthermore, fracture grooves 51 are provided at the positions where the two limiting plates 5 are fixedly connected to the first pressure relief port 12. The length direction of the fracture grooves 51 is the same as the length direction of the pressure relief rotating plate 3, and the fracture grooves 51 are located outside the limiting plates 5 away from the pressure relief rotating plate 3. When an explosion accident occurs inside the hydrogen power generation device 1, the pressure relief rotating plate 3 will be impacted by the shock wave and squeeze the limiting plate 5. The provided fracture grooves 51 make the connection between the limiting plate 5 and the first pressure relief port 12 thinner, so that the limiting plate 5 can break more quickly, avoiding affecting the opening of the pressure relief rotating plate 3.

[0046] A pressure relief rotating plate 3 with the same structure as that on the first pressure relief port 12 is provided on the second pressure relief port 21. After an explosion accident occurs inside the hydrogen power generation device 1, the pressure relief airflow can first flow into the pressure relief chamber 2. When the pressure inside the pressure relief chamber 2 is too high, the pressure relief rotating plate 3 on the second pressure relief port 21 can be opened, thereby discharging the pressure relief airflow to the outside of the room.

[0047] The implementation principle of a pressure relief device for a hydrogen fuel power generation vehicle in an embodiment of the present application is as follows: When an explosion accident occurs inside the hydrogen power generation device 1, the high-pressure air flow inside it can impact and open the pressure relief rotating plate 3, enabling the air flow inside the hydrogen power generation device 1 to first flow into the pressure relief chamber 2 and then flow to the outside through the second pressure relief port 21, avoiding damage to the hydrogen power generation device 1.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A pressure relief device for a hydrogen fuel power generation vehicle, comprising a multi-layer hydrogen power generation device (1) arranged on the hydrogen fuel power generation vehicle. The hydrogen power generation device (1) is a rectangular cavity surrounded by multiple enclosing plates (11), and the reaction of hydrogen fuel occurs inside the rectangular cavity. A first pressure relief port (12) is provided at the same end of multiple hydrogen power generation devices (1), and a pressure relief chamber (2) is arranged at one end of multiple hydrogen power generation devices (1) close to the first pressure relief port (12). The interior of the pressure relief chamber (2) is communicated with the interior of the hydrogen power generation device (1), and a second pressure relief port (21) is provided at the upper end of the pressure relief chamber (2). It is characterized in that: A pressure relief rotating plate (3) is rotatably provided on the first pressure relief port (12), and the pressure relief rotating plate (3) is adapted to the first pressure relief port (12); A rotating shaft (31) is fixedly connected to one side of the pressure relief rotating plate (3) close to the inside of the hydrogen power generation device (1), and both ends of the rotating shaft (31) are rotatably connected to the enclosure plate (11); A pair of fixed blocks (4) are fixedly connected on the inner wall of the enclosure (11) and at the positions at both ends of the rotating shaft (31); the ends of the rotating shaft (31) are passed through the fixed blocks (4), and the ends of the rotating shaft (31) are rotatably connected to the fixed blocks (4); The second pressure relief port (21) is also rotatably provided with a pressure relief rotating plate (3).

2. The pressure relief device of a hydrogen fuel power generation vehicle according to claim 1, characterized in that: The rotating shaft (31) is arranged vertically, and the length direction of the rotating shaft (31) is perpendicular to the length direction of the pressure relief rotating plate (3).

3. The pressure relief device for a hydrogen fuel power generation vehicle according to claim 1, wherein: A limiting member for limiting the rotation of the pressure relief rotating plate (3) is arranged outside the first pressure relief port (12).

4. The pressure relief device for a hydrogen fuel power generation vehicle according to claim 3, characterized in that: The limiting member comprises a limiting plate (5) fixedly connected to the side edge of the first pressure relief port (12) in the length direction, the width direction of the limiting plate (5) being the same as the width direction of the pressure relief rotating plate (3), and the limiting plate (5) being fixedly connected to the outer side of the first pressure relief port (12) away from the rotating shaft (31).

5. The pressure relief device for a hydrogen fuel power generation vehicle according to claim 4, characterized in that: A pair of the limit plates (5) are symmetrically arranged on both sides of the first pressure relief port (12) in the length direction.

6. The pressure relief device for a hydrogen fuel power generation vehicle according to claim 1, characterized in that: The pressure relief rotating plate (3) is provided with a clearance groove (32) at the position of the two limit plates (5) and away from the outer side of the rotating shaft (31). The limit plates (5) can be embedded in the clearance groove (32).

7. The pressure relief device of a hydrogen fuel power generation vehicle according to claim 4, characterized in that: A breaking groove (51) is provided at the position where the two limit plates (5) are fixedly connected to the first pressure relief port (12).

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