Automatic protection device for hydrogen energy vehicle maintenance station

Abstract

The present application relates to hydrogen energy vehicle maintenance technical field, especially to a kind of hydrogen energy vehicle maintenance station automatic protection device, hydrogen gas gathered in car can be forced to discharge safety protection device.Techinical scheme is: including air release workshop, air release device and explosion-proof room are fixed in air release workshop, and the gas guide pipeline of air release device extends to the inside of explosion-proof room.Among them, explosion-proof room includes: bottom plate component, explosion-proof wall and air inlet component, wherein, bottom plate component includes support bottom plate, exhaust fan and ventilation pipeline, support bottom plate is provided with air outlet, one end of ventilation pipeline is located below support bottom plate, and it is opposite air outlet, the other end of ventilation pipeline extends to air release workshop outside from below support bottom plate, exhaust fan is fixed with one end of ventilation pipeline, exhaust fan is configured to extract gas in explosion-proof room.Explosion-proof wall is fixed on bottom plate component to form airtight space, and gas guide pipeline is set in explosion-proof room through explosion-proof side wall.

Description

Technical Field

[0001] This invention relates to the field of hydrogen fuel cell vehicle maintenance technology, and in particular to an automatic protection device for hydrogen fuel cell vehicle maintenance stations. Background Technology

[0002] Currently, maintenance and repair of hydrogen fuel cell vehicles are still carried out at traditional vehicle repair shops. In practice, there is a possibility of leakage of some of the hydrogen fuel carried by the hydrogen-powered vehicle itself during the repair process, making it unsuitable for the maintenance and repair of large numbers of hydrogen fuel cell vehicles. If too much hydrogen accumulates at a repair shop, it poses a significant safety hazard.

[0003] Currently, before repairing hydrogen fuel cell vehicles, a venting device is used to completely release the hydrogen from the fuel cell to prevent explosions caused by hydrogen accumulation.

[0004] When the proportion of hydrogen in the air is between 4% and 70%, an accident may occur if it comes into contact with an open flame. Therefore, during the hydrogen emission process, the hydrogen density at the operating site should be monitored at all times, and preparations should be made to replenish the air at the operating site at any time to ensure air circulation, reduce the proportion of hydrogen in the air, and avoid accidents.

[0005] The vehicle's structure is complex, and during hydrogen emission, there may be openings at the bottom and seals at the top, causing hydrogen to accumulate. In such cases, airflow prevents the hydrogen from being released naturally. Sensors that detect hydrogen concentrations may also struggle to detect areas with excessively high concentrations. Repair workers may generate open flames, such as electrical sparks, during maintenance, leading to accidents that could injure the vehicle or, in severe cases, endanger personal safety. Summary of the Invention

[0006] To overcome the deficiencies in the aforementioned related technologies, the present invention provides a safety protection device that can force the emission of hydrogen gas accumulated inside a vehicle.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An automatic protection device for a hydrogen fuel cell vehicle repair station includes a venting workshop, in which a venting device and an explosion-proof chamber are fixed, and the venting device's gas guide pipe extends into the explosion-proof chamber.

[0009] The explosion-proof chamber includes a base plate, an explosion-proof wall, and an air intake component. The base plate includes a supporting base plate, an exhaust fan, and a ventilation duct. An exhaust vent is located on the supporting base plate. One end of the ventilation duct is located below the supporting base plate and directly opposite the exhaust vent. The other end of the ventilation duct extends from below the supporting base plate to the outside of the explosion-proof chamber. The exhaust fan is fixed to one end of the ventilation duct and is configured to extract gas from the explosion-proof chamber. The explosion-proof wall is fixed to the base plate to form a sealed space. The air intake component passes through the explosion-proof wall and is located within the explosion-proof chamber. The air intake component includes a first air intake pipe and a second air intake pipe. One end of multiple first air intake pipes is located above the interior of the explosion-proof chamber, and the other end of multiple first air intake pipes is connected to one end of a second air intake pipe. The other end of the second air intake pipe is located outside the explosion-proof chamber.

[0010] Preferably, the automatic protection device for a hydrogen energy vehicle repair station further includes a sealing component, which includes two symmetrically arranged sealing elements, and two second sealing strips are fixed between the two symmetrically arranged sealing elements. The two symmetrically arranged sealing elements and the two second sealing strips are arranged in a ring structure.

[0011] The sealing component includes: a first telescopic component, a sealing bracket, a second contractile component, a sealing end, and a first sealing strip. At least one of the first telescopic components is fixed to the inner wall of the explosion-proof wall. The sealing bracket is fixedly connected to the piston rod of the first telescopic component. At least two second contractile components are fixed on the sealing bracket, and the at least two second contractile components are arranged opposite to each other. A sealing bracket is fixed on the piston rod of each second contractile component, and a first sealing strip is fixed between the two sealing brackets.

[0012] Preferably, the first sealing strip and the second sealing strip are elastic strip structures.

[0013] Preferably, the sealing bracket includes at least one arc surface adapted to the corner of the vehicle shell, and the arc surface is provided with a flexible liner.

[0014] Preferably, the other end of the ventilation duct is higher than the other end of the second air intake duct.

[0015] Preferably, a protective net is fixed to the exhaust port above the exhaust fan.

[0016] Preferably, the explosion-proof wall further includes an explosion-proof door, and the supporting base plate further includes a ramp for vehicles to go up and down, and the ramp is directly opposite the explosion-proof door.

[0017] Preferably, the inner diameter of the first air intake pipe is smaller than the inner diameter of the second air intake pipe, and multiple first air intake pipes are connected to the second air intake pipe.

[0018] Preferably, an air filter is provided in the second air intake pipe.

[0019] The beneficial effects of this invention are as follows:

[0020] First, automobiles have complex structures with various components. Structures such as pipes, channels, and curved plates with openings at the bottom and seals at the top can lead to hydrogen accumulation due to its light weight, posing a safety hazard. A powerful exhaust fan placed directly under the vehicle body creates a negative pressure field, allowing hydrogen to be extracted from components with openings at the bottom and seals at the top. The exhaust fan also provides the power for airflow, thus achieving complete emission of any leaked hydrogen.

[0021] Secondly, using an explosion-proof room can create a separate workspace, where most equipment can be installed. Even in the event of an accident, the explosion-proof room can provide safety protection and minimize equipment damage and economic losses.

[0022] Third, the sealing components are used to seal the opening between the vehicle chassis and the ground, so that the negative pressure of the exhaust fan can draw air into the car instead of making ineffective air circulation through the opening between the chassis and the ground. This can improve the hydrogen emission speed, cleanliness and reduce energy consumption. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural diagram of the present invention;

[0025] Figure 2 This is a top view of the base plate component of the present invention;

[0026] Figure 3 This is a cross-sectional view of the base plate component of the present invention;

[0027] Figure 4 This is a diagram illustrating the operational status of the present invention.

[0028] Figure 5 This is a structural diagram of the sealing component of the present invention;

[0029] Figure 6 This is a schematic diagram showing the connection between the second sealing strip and the sealing bracket of the present invention. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The term "connection" can refer to a direct connection, an indirect connection through an intermediate medium, or a connection between the internal components of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] like Figures 1 to 6 As shown, the present invention provides a first aspect of an automatic protection device for a hydrogen energy vehicle repair station, including a venting workshop 1, wherein a venting device 2 and an explosion-proof chamber 3 are fixed inside the venting workshop 1, and the gas duct of the venting device 2 extends into the interior of the explosion-proof chamber 3.

[0035] The explosion-proof room 3 includes a base plate component 31, an explosion-proof wall 32, and an air intake component 33. The base plate component 31 includes a supporting base plate 311, an exhaust fan 312, and a ventilation duct 313. An exhaust vent K is provided on the supporting base plate 311. One end of the ventilation duct 313 is located below the supporting base plate 311 and directly opposite the exhaust vent K. The other end of the ventilation duct 313 extends from below the supporting base plate 311 to the outside of the venting chamber 1. The exhaust fan 312 is fixed to one end of the ventilation duct 313 and is configured to extract gas from the explosion-proof room 3. The explosion-proof wall 32 is fixed to the base plate component 31 to form a sealed space, and the air intake duct passes through the explosion-proof wall and is disposed within the explosion-proof room 3. The air intake component 33 includes a first air intake pipe 331 and a second air intake pipe 332. One end of the plurality of first air intake pipes 331 is located above the interior of the explosion-proof room 3, and the other end of the plurality of first air intake pipes 331 is connected to one end of the second air intake pipe 332. The other end of the second air intake pipe 332 is located outside the venting workshop 1.

[0036] Preferably, the automatic protection device for a hydrogen energy vehicle repair station further includes a sealing component 34, which includes two symmetrically arranged sealing elements 341, and two second sealing strips 342 are fixed between the two symmetrically arranged sealing elements 341. The two symmetrically arranged sealing elements 341 and the two second sealing strips 342 are arranged in a ring structure.

[0037] The sealing component 341 includes: a first telescopic component 343, a sealing bracket 344, a second contractile component 345, a sealing end 346, and a first sealing strip 347. At least one first telescopic component 343 is fixed to the inner wall of the explosion-proof wall 32. The sealing bracket 344 is fixedly connected to the piston rod of the first telescopic component 343. At least two second contractile components 345 are fixed on the sealing bracket 344, and the at least two second contractile components 345 are arranged opposite to each other. A sealing bracket 344 is fixed on the piston rod of each second contractile component 345. A first sealing strip 347 is fixed between two sealing brackets 344.

[0038] Preferably, the first sealing strip 347 and the second sealing strip 342 are elastic strip structures. For example, the first sealing strip 347 and the second sealing strip 342 can be made of rubber.

[0039] Preferably, the sealing bracket 344 includes at least one arc surface adapted to the corner of the vehicle shell, and the arc surface is provided with a flexible inner liner.

[0040] Both the first telescopic component 343 and the second retractable component 345 are electric push rods.

[0041] It should be noted that one end of one of the two second sealing strips 342 is fixedly connected to a sealing bracket 344, and the other end of the other second sealing strip 342 is connected to the sealing bracket 344 by hooking. Specifically, a sealing bracket 344 is provided with a protrusion 3441 for hooking the other end of the second sealing strip 342, and a groove 3421 for engaging the protrusion is provided on the other end of the second sealing strip 342.

[0042] Preferably, the other end of the ventilation duct 313 is higher than the other end of the second air inlet duct 332, which can prevent the emitted hydrogen from flowing back into the explosion-proof room 3.

[0043] Preferably, a protective net is fixed on the exhaust port K above the exhaust fan 312.

[0044] Preferably, the explosion-proof wall 32 further includes an explosion-proof door, and the supporting base plate 311 further includes a ramp 314 for vehicles to go up and down, and the ramp 314 is directly opposite the explosion-proof door.

[0045] Preferably, the inner diameter of the first air intake pipe 331 is smaller than the inner diameter of the second air intake pipe 332, and multiple first air intake pipes 331 are connected to the second air intake pipe 332.

[0046] Preferably, an air filter element is provided in the second air intake pipe 332.

[0047] The specific operation process of this invention is as follows:

[0048] Open the venting chamber 1 and the explosion-proof chamber 3, and the car slowly drives into the explosion-proof chamber 3. The car is located directly above the floor plate component 31, and the exhaust vent K is located directly below the car chassis.

[0049] The sealing component 34 seals the opening from the vehicle chassis to the supporting base plate 311. Specifically, the second retractable component 345 operates to adapt the length between the two sealing brackets 344 to the vehicle body length, the first telescopic component 343 operates to make the first sealing strip 347 fit the vehicle body to seal the openings on both sides of the vehicle, and then a second sealing strip 342 is attached to seal the openings at the front and rear of the vehicle.

[0050] It should be noted that the lower edge of the first sealing strip 347 and the second sealing strip 342 is no more than 1 cm away from the supporting base plate 311 (the lower edge of the first sealing strip 347 and the second sealing strip 342 is in a horizontal state). The upper edge of the first sealing strip 347 and the second sealing strip 342 extends at least 3 cm beyond the vehicle chassis.

[0051] The venting device 2 is connected to the hydrogen fuel cell. After personnel leave the explosion-proof room 3, the exhaust fan 312 is started, and then the venting device 2 is started again. This process is repeated for a period of time (the specific duration depends on the specific vehicle model, with the standard being that all residual hydrogen in the hydrogen fuel cell is vented). Under negative pressure, some of the accumulated hydrogen is drawn into the ventilation duct 313, thus venting the gas completely.

[0052] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0053] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An automatic protection device for a hydrogen energy vehicle maintenance station, comprising a deflation workshop, characterized in that, The venting workshop is equipped with a fixed venting device and an explosion-proof room, and the venting device's duct extends into the explosion-proof room; wherein, The explosion-proof room includes: The base plate component includes a supporting base plate, an exhaust fan, and a ventilation duct. An exhaust port is provided on the supporting base plate. One end of the ventilation duct is located below the supporting base plate and directly opposite the exhaust port. The other end of the ventilation duct extends from below the supporting base plate to the outside of the venting workshop. The exhaust fan is fixed in one end of the ventilation duct and is configured to extract gas from the explosion-proof room. An explosion-proof wall is fixed to the base plate component to form a sealed space, and the gas duct is installed inside the explosion-proof room through the explosion-proof wall; The air intake component includes a first air intake pipe and a second air intake pipe. One end of the plurality of first air intake pipes is located above the interior of the explosion-proof room, and the other end of the plurality of first air intake pipes is connected to one end of the second air intake pipe. The other end of the second air intake pipe is located outside the venting workshop. The automatic protection device for hydrogen fuel cell vehicle repair stations also includes sealing components; The sealing component includes two symmetrically arranged sealing elements, with two second sealing strips fixed between the two symmetrically arranged sealing elements. The two symmetrically arranged sealing elements and the two second sealing strips are configured as a ring structure. The sealing component includes: a first telescopic component, a sealing bracket, a second contractile component, a sealing end, and a first sealing strip. At least one of the first telescopic components is fixed to the inner wall of the explosion-proof wall. The sealing bracket is fixedly connected to the piston rod of the first telescopic component. At least two second contractile components are fixed on the sealing bracket, and the at least two second contractile components are arranged opposite to each other. A sealing bracket is fixed on the piston rod of each second contractile component, and a first sealing strip is fixed between the two sealing brackets.

2. The automatic protection device for a hydrogen fuel cell vehicle repair station according to claim 1, characterized in that, The first sealing strip and the second sealing strip are elastic strip structures.

3. The automatic protection device for a hydrogen fuel cell vehicle repair station according to claim 2, characterized in that, The sealing bracket includes at least one arc surface adapted to the corner of the vehicle shell, and a flexible liner is provided on the arc surface.

4. The automatic protection device for a hydrogen fuel cell vehicle repair station according to claim 3, characterized in that, The other end of the ventilation duct is higher than the other end of the second air intake duct.

5. An automatic protection device for a hydrogen fuel cell vehicle repair station according to claim 4, characterized in that, A protective net is fixed to the exhaust vent above the exhaust fan.

6. An automatic protection device for a hydrogen fuel cell vehicle repair station according to claim 5, characterized in that, The explosion-proof wall also includes an explosion-proof door; the supporting base plate also includes a ramp for vehicles to go up and down, and the ramp is directly opposite the explosion-proof door.

7. An automatic protection device for a hydrogen fuel cell vehicle repair station according to claim 6, characterized in that, The inner diameter of the first intake pipe is smaller than the inner diameter of the second intake pipe, and multiple first intake pipes are connected to the second intake pipe.

8. An automatic protection device for a hydrogen fuel cell vehicle repair station according to claim 7, characterized in that, An air filter is installed in the second air intake pipe.

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