A multifunctional lithium battery fire extinguishing cover

Abstract

This utility model discloses a multifunctional lithium battery fire extinguishing cover, including a right fire extinguishing cover, a left fire extinguishing cover, and openings on the opposite outer walls of the right and left fire extinguishing covers. Wheel sets are installed at the front and rear edges of the bottom of both the right and left fire extinguishing covers. U-shaped semi-circular jet structures are installed on the opposite inner walls of both the right and left fire extinguishing covers. This utility model allows two firefighters to move the right and left fire extinguishing covers to the location of the lithium battery fire, connecting them to form a relatively closed chamber. The U-shaped semi-circular jet structures then connect to a carbon dioxide cylinder for gas injection to suppress the spread of fire.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing cover technology, specifically a multifunctional lithium battery fire extinguishing cover. Background Technology

[0002] Lithium battery fires in electric vehicles are characterized by high temperatures, explosiveness, and flammability. Direct water extinguishing is not recommended as it reacts with lithium to produce harmful gases and poses an explosion risk. The correct response includes first assessing the fire situation, ensuring personal safety, wearing protective gear, and immediately disconnecting the power supply to minimize continuous power consumption. When extinguishing the fire, dry powder or carbon dioxide extinguishers are recommended. These extinguishing agents can quickly cover the fire source, isolate oxygen, cool the burning area, and suppress the spread of the fire. When operating, aim at the base of the flames and spray low or continuously. Avoid using water or other unsuitable extinguishers. After extinguishing the fire, continue to cool the burning area to prevent reignition. Immediately call for professional firefighters to handle the situation and ensure on-site safety. However, if the fire is discovered late or after the lithium battery has been burning for some time, the combustion temperature may exceed 1000 degrees Celsius, easily triggering a local explosion or splashing of burning materials, producing large amounts of toxic and harmful gases and smoke. In such cases, it is difficult for personnel to approach the burning point, leaving the fire to continue burning. Therefore, a fire extinguishing shield is needed to suppress the spread of the lithium battery fire. Utility Model Content

[0003] The purpose of this invention is to provide a multifunctional lithium battery fire extinguishing cover. The right and left fire extinguishing covers are moved to the lithium battery combustion point under the operation of two firefighters, forming a relatively closed chamber at the lithium battery combustion point. A U-shaped semi-circular jet structure is connected to a carbon dioxide cylinder, allowing carbon dioxide gas to be sprayed towards the lithium battery combustion point through the U-shaped semi-circular jet structure to gradually suppress the spread of the fire, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional lithium battery fire extinguishing cover, including a right fire extinguishing cover, a left fire extinguishing cover, and openings on the opposite outer walls of the right and left fire extinguishing covers. Wheel sets are installed at the front and rear edges of the bottom of the right and left fire extinguishing covers, and U-shaped semi-circular jet structures are installed on the opposite inner walls of the right and left fire extinguishing covers.

[0005] Preferably, U-shaped railings are fixed on the outer walls of the right and left fire extinguishing hoods on the sides that are far apart from each other.

[0006] Preferably, the right fire extinguishing hood and the left fire extinguishing hood are made of stainless steel components, and the front and rear outer walls of the right fire extinguishing hood and the left fire extinguishing hood are both provided with sloping walls.

[0007] Preferably, the wheel assembly consists of a U-shaped profile, wheels, and casters. The U-shaped profile is fixed at the front and rear edges of the bottom of the right and left fire extinguishing hoods. The wheels are installed on both sides of the bottom of the U-shaped profile, and the casters are installed at the bottom of the U-shaped profile between the two wheels.

[0008] Preferably, the U-shaped semi-circular jet structure includes a main air pipe installed on the inner wall of one side of the right fire extinguishing hood, side pipes installed at both ends of the main air pipe, and several diversion pipes installed in an array at equal intervals on the outer wall of one side of the main air pipe. High-pressure nozzles are installed on the ends of the diversion pipes and on the outer walls of the side pipes. An L-shaped air inlet pipe that communicates with the main air pipe is also installed on the outer wall of one side of the right fire extinguishing hood.

[0009] Preferably, the height of the right fire extinguishing hood and the left fire extinguishing hood is 2m to 2.5m, and the top of the right fire extinguishing hood and the left fire extinguishing hood are both provided with a flat part.

[0010] Compared with existing technologies, the beneficial effects of this utility model are as follows: This multifunctional lithium battery fire extinguishing cover, through its structure consisting of a right fire extinguishing cover, a left fire extinguishing cover, a set of wheels, and a U-shaped semi-circular jet structure, allows two firefighters to operate it. The right and left fire extinguishing covers are pushed to the lithium battery combustion point and joined together to form a relatively closed chamber. The U-shaped semi-circular jet structure then connects to a carbon dioxide cylinder for gas injection to suppress the spread of fire. The placement of the fire extinguishing covers on the left and right sides of the combustion point by two firefighters, forming a semi-closed chamber, effectively limits the flame spread path, thus containing the fire source. Enclosed in a relatively closed space, reducing the inflow of oxygen, thus inhibiting the continuation of the combustion reaction, this locally enclosed structure can achieve more efficient fire control compared to traditional spray extinguishing methods, preventing the flames from spreading to other areas and reducing the risk of fire expansion. The U-shaped semi-encircling jet structure design allows carbon dioxide gas to be sprayed evenly and concentratedly towards the combustion point along a predetermined path, maximizing the introduction of carbon dioxide gas into the core area of ​​the flame to form an effective cooling and suffocation effect. Compared to dispersed spraying, concentrated spraying can significantly improve the utilization rate of extinguishing agents, reduce waste, and ensure that the extinguishing agent directly acts on the combustion area, thereby increasing the speed of fire extinguishing. Secondly, the right and left fire extinguishing covers form a physical barrier, reducing potential hazards such as flying debris. At the same time, the injection of carbon dioxide can quickly cool the temperature of the burning area, reduce the intensity of the fire, reduce the spread of harmful gases, and improve the on-site environmental conditions, thereby providing a safer environment for subsequent fire extinguishing and hazard mitigation work. Attached Figure Description

[0011] Figure 1This is a schematic diagram of the closed state structure of the right and left fire extinguishing covers of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the closed state structure of the right and left fire extinguishing covers of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the three-dimensional structure of the right fire extinguishing cover of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the three-dimensional structure of the right fire extinguishing cover of this utility model. Figure 2 .

[0012] In the diagram: 1. Right fire extinguishing hood; 2. Left fire extinguishing hood; 3. U-shaped railing; 4. Walking wheel set; 5. Opening; 6. U-shaped semi-circular jet structure; 601. Main air pipe; 602. Diverter pipe; 603. Side pipe; 604. High-pressure nozzle; 605. L-shaped air inlet pipe; 7. Sloping wall. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0014] Please see Figure 1-4 An embodiment of this utility model is provided: a multifunctional lithium battery fire extinguishing cover, including a right fire extinguishing cover 1, a left fire extinguishing cover 2, and openings 5 ​​on the outer walls of the opposite sides of the right fire extinguishing cover 1 and the left fire extinguishing cover 2. A set of walking wheels 4 are installed at the front and rear edges of the bottom of the right fire extinguishing cover 1 and the left fire extinguishing cover 2. A U-shaped semi-circular jet structure 6 is installed on the inner wall of the opposite sides of the right fire extinguishing cover 1 and the left fire extinguishing cover 2. U-shaped railings 3 are fixed on the outer walls of the right fire extinguishing hood 1 and the left fire extinguishing hood 2 on the side that are far apart from each other; The height of the right fire extinguishing hood 1 and the left fire extinguishing hood 2 is 2m to 2.5m. The top of the right fire extinguishing hood 1 and the left fire extinguishing hood 2 is provided with a flat part. The right fire extinguishing hood 1 and the left fire extinguishing hood 2 are made of stainless steel components. The right fire extinguishing hood 1 and the left fire extinguishing hood 2 are made of stainless steel to surround the fire source and form a local closed area to limit the spread of flames and the splashing of debris. The front and rear outer walls of the right fire extinguishing hood 1 and the left fire extinguishing hood 2 are provided with sloping walls 7. The wheel assembly 4 consists of a U-shaped profile, wheels, and casters. The U-shaped profile is fixed at the front and rear edges of the bottom of the right fire extinguishing cover 1 and the left fire extinguishing cover 2. The wheels are installed on both sides of the bottom of the U-shaped profile, and the casters are installed at the bottom of the U-shaped profile between the two wheels. The wheel assembly 4 is the basic moving part of the right fire extinguishing cover 1 and the left fire extinguishing cover 2, allowing the fire extinguishing cover to move smoothly and flexibly to the designated position in the fire scene. The wheels at both ends of the U-shaped profile are used to support the cover, and the casters in the middle section of the U-shaped profile are used to flexibly adjust the moving direction of the cover, so that the fire extinguishing cover is easy to operate and reduces the difficulty of operation. The U-shaped semi-circular jet structure 6 includes a main air pipe 601 installed on the inner wall of one side of the right fire extinguishing hood 1, side pipes 603 installed at both ends of the main air pipe 601, and several branch pipes 602 evenly spaced and arrayed on the outer wall of one side of the main air pipe 601. High-pressure nozzles 604 are installed at the ends of the branch pipes 602 and on the outer walls of the side pipes 603. An L-shaped air inlet pipe 605, connected to the main air pipe 601, is also installed on the outer wall of one side of the right fire extinguishing hood 1. A switch for the carbon dioxide cylinder is also included. The valve is connected to the L-shaped intake pipe 605 via a hose, allowing carbon dioxide gas to enter the main intake pipe 601 through the L-shaped intake pipe 605. Subsequently, the carbon dioxide gas enters the branch pipe 602 and the side pipe 603, and is finally sprayed onto the combustion zone through the high-pressure nozzle 604. This uniformly and centrally sprays the carbon dioxide gas onto the combustion zone, creating an enveloping cooling and suffocation effect. Its semi-ring design can cover a large fire source area, reducing dead zones and effectively isolating the oxygen supply and inhibiting the combustion reaction.

[0015] In this embodiment, the first step is for personnel to confirm the location of the fire source, the scale of the fire, and the surrounding environment, and to wear necessary personal protective equipment to ensure their safety. The air inlet of the U-shaped semi-circular jet structure 6 is connected to a carbon dioxide cylinder via a hose. It is confirmed that the carbon dioxide cylinder pressure is normal, the jet pipeline is unobstructed, and that the right fire extinguishing hood 1, left fire extinguishing hood 2, wheel set 4, and U-shaped semi-circular jet structure 6 are intact, undamaged, and unblocked. Two firefighters are then coordinated to move the right fire extinguishing hood 1 and left fire extinguishing hood 2 to the left and right sides of the fire source via the wheel set 4, forming an enclosed or sealed space. At this point, the right fire extinguishing hood 1 and left fire extinguishing hood 2 approach each other via the wheel set 4 until their openings 5 ​​contact, forming a relatively closed space. In the enclosed chamber, due to the presence of the walking wheel set 4, there are still some gaps between the right fire extinguishing hood 1, the left fire extinguishing hood 2 and the ground. After the right fire extinguishing hood 1 and the left fire extinguishing hood 2 are closed, the staff should quickly evacuate and open the valve of the carbon dioxide cylinder. The carbon dioxide gas is evenly sprayed towards the combustion point through the U-shaped semi-circular jet structure 6, gradually cooling the flame, suffocating the fire source, and inhibiting the spread of the fire. During the operation, the changes in the fire situation should be closely observed, and the jet parameters should be adjusted to achieve the best fire extinguishing effect. After a certain period of spraying, observe whether the flame is completely extinguished and whether the temperature has dropped to a safe range. If the fire has been basically controlled, the carbon dioxide cylinder can be gradually closed, and the fire extinguishing hoods can be evacuated. The fire-extinguished area should be inspected to confirm that there is no risk of reignition.

Claims

1. A multifunctional lithium battery fire extinguishing cover, characterized in that: It includes a right fire extinguishing hood (1), a left fire extinguishing hood (2) and openings (5) on the opposite outer walls of the right fire extinguishing hood (1) and the left fire extinguishing hood (2). The right fire extinguishing hood (1) and the left fire extinguishing hood (2) are equipped with a set of walking wheels (4) at the front and rear edges of the bottom of the right fire extinguishing hood (1) and the left fire extinguishing hood (2). The opposite inner walls of the right fire extinguishing hood (1) and the left fire extinguishing hood (2) are equipped with U-shaped semi-circular jet structures (6).

2. The multifunctional lithium battery fire extinguishing cover according to claim 1, characterized in that: U-shaped railings (3) are fixed on the outer walls of the right fire extinguishing hood (1) and the left fire extinguishing hood (2) on the side away from each other.

3. A multifunctional lithium battery fire extinguishing cover according to claim 2, characterized in that: The right fire extinguishing cover (1) and the left fire extinguishing cover (2) are made of stainless steel components, and the front and rear outer walls of the right fire extinguishing cover (1) and the left fire extinguishing cover (2) are provided with sloping walls (7).

4. A multifunctional lithium battery fire extinguishing cover according to claim 1, characterized in that: The walking wheel assembly (4) consists of a U-shaped profile, walking wheels and universal wheels. The U-shaped profile is fixed at the front and rear edges of the bottom of the right fire extinguishing cover (1) and the left fire extinguishing cover (2). The walking wheels are installed on both sides of the bottom of the U-shaped profile, and the universal wheels are installed at the bottom of the U-shaped profile between the two walking wheels.

5. A multifunctional lithium battery fire extinguishing cover according to claim 1, characterized in that: The U-shaped semi-circular jet structure (6) includes a main air pipe (601) installed on the inner wall of one side of the right fire extinguishing hood (1), side pipes (603) installed at both ends of the main air pipe (601), and several diversion pipes (602) installed in an array at equal intervals on the outer wall of one side of the main air pipe (601). High-pressure nozzles (604) are installed at the ends of the diversion pipes (602) and on the outer wall of the side pipes (603). An L-shaped air inlet pipe (605) connected to the main air pipe (601) is also installed on the outer wall of one side of the right fire extinguishing hood (1).

6. A multifunctional lithium battery fire extinguishing cover according to claim 1, characterized in that: The height of the right fire extinguishing hood (1) and the left fire extinguishing hood (2) is 2m to 2.5m, and the top of the right fire extinguishing hood (1) and the left fire extinguishing hood (2) are both provided with a flat part.

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