Explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium battery of electric bicycle

Abstract

The utility model provides an explosion-proof fire extinguishing tank for quickly extinguishing a lithium battery of an electric bicycle. The explosion-proof fire extinguishing tank comprises a tank body and an upper cover, the tank body is in a barrel shape with an opening in the upper end, and the upper cover is detachably and tightly connected to the opening in the upper end of the tank body, so that a closed cavity is formed in the tank body; the upper cover is provided with an inflation port, a water injection port, an overflow ball valve and a pressure gauge; the input end of the inflation port is provided with a self-sealing inflation quick-plug connector. The input end of the water injection opening is in threaded connection with a sealing cover, and a pressure relief bolt is arranged on the sealing cover. And the output end of the inflating port, the output end of the water filling port, the measuring end of the pressure gauge and one end of the overflow ball valve respectively penetrate through the upper cover and are communicated with the closed cavity in the tank body. The explosion-proof fire extinguishing tank for rapid fire extinguishing of the lithium battery of the electric bicycle is ingenious in structure and convenient to carry, can be freely carried to any complex place, and is convenient to make a rapid response when a fire that the lithium battery burns occurs.

Description

Technical Field

[0001] The utility model relates to the field of fire-fighting equipment, in particular to an explosion-proof fire-extinguishing tank for quickly extinguishing a lithium battery of an electric bicycle. Background Art

[0002] In recent years, more and more people have chosen electric bicycles as their daily commuting means of transportation. As the number of electric bicycles increases, the use of corresponding lithium batteries has become more and more widespread. However, the quality of lithium battery products on electric bicycles is currently uneven, resulting in lithium battery fires from time to time. At the same time, due to its widespread use and high failure rate, it has brought certain difficulties to fire fighting and rescue, thus causing certain social safety risks.

[0003] There are two important reasons why firefighting is difficult. First, the lithium batteries in most electric bicycles are designed to be easily disassembled and portable, so lithium batteries may appear anywhere, such as homes, maintenance sites, charging stations, etc. Once a fire occurs, fire-fighting tools and measures need to be very timely. Second, lithium batteries have the physical and chemical properties of being flammable after a failure, and are very easy to reignite or smolder after a fire. They cannot be discarded or damaged at will, which greatly limits the efficiency of firefighting and rescue.

[0004] There are two main types of fire-fighting tools currently used for fires caused by lithium batteries. One is a plastic water tank or bucket. When a fire occurs, the lithium battery is immersed in water for a long time to isolate the battery from the air to achieve the purpose of extinguishing the fire. The disadvantages of this type of fire-fighting tool are: 1. The water tank or bucket is generally an open structure with low structural strength. Long-term immersion fire extinguishing requires operators to be on duty for a long time to prevent accidents; 2. Sufficient water must be used, and in complex situations, the water source may not be easy to obtain or carry.

[0005] The other is an explosion-proof box, which seals the lithium battery in the explosion-proof box when a fire occurs, waiting for the combustible part of the battery to burn out automatically. The disadvantages of this fire-fighting tool are: 1. The pressure release device usually used in the explosion-proof box makes it not completely sealed, so the battery is not isolated from the outside air. When extinguishing the fire, it takes a long time to wait for the lithium battery to burn out naturally, and it is easy to cause air pollution; 2. The explosion-proof box is usually heavy and large in size, not portable, and is only suitable for use in relatively fixed places.

[0006] In summary, the existing fire-fighting tools for lithium batteries of electric bicycles have the disadvantages of slow fire-fighting speed and inconvenience in carrying, and need to be improved and perfected. Utility Model Content

[0007] In view of this, it is necessary to provide an explosion-proof fire extinguisher for quickly extinguishing a lithium battery of an electric bicycle in order to address the problems existing in the prior art. The fire extinguisher can quickly extinguish a burning lithium battery and is flexible and portable.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] An explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium batteries of electric bicycles, comprising a tank body and an upper cover; the tank body is in a barrel shape with an upper opening, and the upper cover is detachably and tightly connected to the upper opening of the tank body, so that a closed cavity is formed inside the tank body;

[0010] The upper cover is provided with an air filling port, a water filling port, an overflow ball valve and a pressure gauge;

[0011] A self-sealing inflation quick-plug connector is installed at the input end of the inflation port;

[0012] The input end of the water injection port is threadedly connected with a sealing cover, and the sealing cover is provided with a pressure relief bolt;

[0013] The output end of the air filling port, the output end of the water injection port, the measuring end of the pressure gauge and one end of the overflow ball valve respectively pass through the upper cover and are communicated with the closed cavity inside the tank body.

[0014] Furthermore, the tank body and the upper cover are detachably and tightly connected via a rotating snap-fit ​​structure, wherein the rotating snap-fit ​​structure comprises a snap-fit ​​protrusion arranged at the upper end opening of the tank body and a snap-fit ​​groove arranged at the edge of the upper cover, wherein the snap-fit ​​groove matches the snap-fit ​​protrusion so that the tank body and the upper cover are tightly connected; a sealing ring is arranged at the end face connection between the tank body and the upper cover.

[0015] Furthermore, a plurality of explosion-proof buckles are provided on the outer side surface of the tank body, and the upper cover is locked to the upper end opening of the tank body by the explosion-proof buckles.

[0016] Furthermore, the inflation port is connected to an air guide hose; one end of the air guide hose is connected to the output end of the inflation port, and the other end of the air guide hose extends to the bottom of the tank body.

[0017] Furthermore, a safety valve is also provided on the upper cover, and an input end of the safety valve passes through the upper cover and is communicated with the closed cavity inside the tank body.

[0018] Furthermore, a handle is fixedly connected to the outer side of the tank body.

[0019] The utility model provides an explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium batteries of electric bicycles. The structure is ingenious and easy to carry. It can be freely carried to any complex place, so as to make a quick response when a fire occurs in which a lithium battery burns. When performing a fire extinguishing operation, the utility model can provide a space isolated from the outside air for the burning lithium battery. At the same time, it can also quickly input two fire extinguishing media, water and gas, for auxiliary fire extinguishing according to different situations, so as to achieve the effect of quickly suffocating the fire source. During the entire fire extinguishing process, after placing the burning lithium battery in the tank body, there is no need to wait for a long time, nor is there a need for personnel to guard it all the time, which greatly improves the fire extinguishing efficiency and effectively avoids the occurrence of accidents such as explosions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is provided in an embodiment of the present invention, which is a schematic diagram of the overall structure of an explosion-proof fire extinguishing tank for quickly extinguishing a lithium battery of an electric bicycle.

[0021] Figure 2 The utility model is provided in an embodiment of an explosion-proof fire extinguishing tank for quickly extinguishing a lithium battery of an electric bicycle. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 and Figure 2 As shown, an explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium batteries of electric bicycles provided by an embodiment of the utility model comprises a tank body 1 and an upper cover 2; the tank body 1 is in the shape of a barrel with an opening at the upper end, and the upper cover 2 is detachably and tightly connected to the upper opening of the tank body 1, so that a closed cavity is formed inside the tank body 1.

[0024] The upper cover 2 is provided with an air filling port 21, a water filling port 22, an overflow ball valve 23 and a pressure gauge 24;

[0025] The input end of the inflation port 21 is equipped with a self-sealing inflation quick-plug connector;

[0026] The input end of the water injection port 22 is threadedly connected with a sealing cover 220, and a pressure relief bolt is provided on the sealing cover 220;

[0027] The output end of the air filling port 21 , the output end of the water injection port 22 , the measuring end of the pressure gauge 24 and one end of the overflow ball valve 23 respectively pass through the upper cover 2 and communicate with the closed cavity inside the tank body 1 .

[0028] Among them, the inflation port 21 is used to fill carbon dioxide into the tank body 1, the water injection port 22 is used to inject water into the tank body 1, the overflow ball valve 23 is used to open during inflation or water injection to balance the internal and external air pressures, and the pressure gauge 24 is used to monitor the changes in air pressure in the tank body 1.

[0029] Furthermore, the tank body 1 and the upper cover 2 are detachably and tightly connected via a rotating buckle structure, which is similar to the connection structure of a pressure cooker lid, and includes a buckle protrusion arranged at the upper end opening of the tank body 1 and a buckle groove arranged at the edge of the upper cover 2, wherein the buckle groove matches the buckle protrusion so that the tank body 1 and the upper cover 2 are tightly connected; a sealing ring 3 is provided at the end surface connection between the tank body 1 and the upper cover 2 to improve the sealing between the tank body 1 and the upper cover 2.

[0030] Furthermore, the outer side of the tank body 1 is provided with a plurality of explosion-proof buckles 4, and the upper cover 2 is locked at the upper end opening of the tank body 1 through the explosion-proof buckles 4. A handle 5 is also fixedly connected to the outer side of the tank body 1 so as to lift the tank body 1.

[0031] As an improvement, the inflation port 21 is also connected to a gas hose 6; one end of the gas hose 6 is connected to the output end of the inflation port 21, and the other end of the gas hose 6 extends to the bottom of the tank body 1, which is used to directly transport carbon dioxide to the bottom of the tank body 1, so as to discharge the oxygen in the tank body 1 from the overflow ball valve 23 above.

[0032] As an improvement, a safety valve 25 is further provided on the upper cover 2, and the input end of the safety valve 25 passes through the upper cover 2 and communicates with the closed cavity inside the tank body 1. The safety valve 25 is used to automatically release pressure when the air pressure in the tank body 1 exceeds a safe value.

[0033] The working process of this embodiment is as follows:

[0034] S1. Open the upper cover 2 and put the burning lithium battery into the can body 1.

[0035] S2. Snap the upper cover 2 onto the tank body 1 and rotate and lock it, and then further fix the upper cover 2 and the tank body 1 with the explosion-proof buckle 4.

[0036] S3, open the overflow ball valve 23 and screw off the sealing cover 220 on the water inlet 22, fill the tank body 1 with water, then close the overflow ball valve 23 and screw on the sealing cover 220, and wait for the battery to be automatically extinguished.

[0037] Alternatively, after opening the overflow ball valve 23, carbon dioxide can be filled into the tank body 1 through the self-closing inflation quick plug connector on the inflation port 21. The carbon dioxide will be transported to the bottom of the tank body 1 by the gas hose 6 and eventually fill the tank body 1. Then, the overflow ball valve 23 is closed and the self-closing inflation quick plug connector is disconnected, waiting for the battery to be automatically extinguished.

[0038] In addition, in S3, nothing can be done, neither water nor carbon dioxide can be injected, and the lithium battery can be allowed to burn in the tank body 1. After the oxygen in the tank body 1 is consumed, the fire can also be extinguished, but it will take a longer time. Different fire extinguishing methods can be selected according to different situations.

[0039] S4. Monitor the pressure change in the tank body 1 through the pressure gauge 24, and then indirectly judge the combustion state of the lithium battery. In this process, if the pressure in the tank body 1 exceeds the safety value, the safety valve 25 can automatically release the pressure, which plays a certain insurance role. Even in extreme cases, the rotating buckle structure between the upper cover 2 and the tank body 1 and the explosion-proof buckle 4 can withstand a certain explosion impact to prevent the lithium battery explosion from injuring people around.

[0040] S5. When the pressure of the pressure gauge 24 is observed to continue to drop, it can be determined that the lithium battery has been completely extinguished. At this time, the pressure relief bolt on the sealing cover 220 can be pressed, the explosion-proof buckle 4 can be unlocked, the upper cover 2 can be opened, and the battery that has been extinguished can be taken out.

[0041] The utility model provides an explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium batteries of electric bicycles. The structure is ingenious and easy to carry. It can be freely carried to any complex place, so as to make a quick response when a fire occurs in which a lithium battery burns. When performing a fire extinguishing operation, the utility model can provide a space isolated from the outside air for the burning lithium battery. At the same time, it can also quickly input two fire extinguishing media, water and gas, for auxiliary fire extinguishing according to different situations, so as to achieve the effect of quickly suffocating the fire source. During the entire fire extinguishing process, after placing the burning lithium battery in the tank body, there is no need to wait for a long time, nor is there a need for personnel to guard it all the time, which greatly improves the fire extinguishing efficiency and effectively avoids the occurrence of accidents such as explosions.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium batteries in electric bicycles. It is characterized in that It comprises a tank body and an upper cover; the tank body is in a barrel shape with an upper opening, and the upper cover is detachably and tightly connected to the upper opening of the tank body, so that a closed cavity is formed inside the tank body; The upper cover is provided with an air filling port, a water filling port, an overflow ball valve and a pressure gauge; A self-sealing inflation quick-plug connector is installed at the input end of the inflation port; The input end of the water injection port is threadedly connected with a sealing cover, and the sealing cover is provided with a pressure relief bolt; The output end of the air filling port, the output end of the water injection port, the measuring end of the pressure gauge and one end of the overflow ball valve respectively pass through the upper cover and are communicated with the closed cavity inside the tank body.

2. The explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium batteries of electric bicycles according to claim 1, It is characterized in that The tank body and the upper cover are detachably and tightly connected via a rotating buckle structure, wherein the rotating buckle structure comprises a buckle protrusion arranged at the upper end opening of the tank body and a buckle groove arranged at the edge of the upper cover, wherein the buckle groove matches the buckle protrusion so that the tank body and the upper cover are tightly connected; a sealing ring is arranged at the end surface connection between the tank body and the upper cover.

3. The explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium batteries of electric bicycles according to claim 1, It is characterized in that The outer side surface of the tank body is provided with a plurality of explosion-proof buckles, and the upper cover is locked at the upper end opening of the tank body through the explosion-proof buckles.

4. The explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium batteries of electric bicycles according to claim 1, It is characterized in that The air filling port is connected to an air guiding hose; one end of the air guiding hose is connected to the output end of the air filling port, and the other end of the air guiding hose extends to the bottom of the tank body.

5. The explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium batteries of electric bicycles according to claim 1, It is characterized in that The upper cover is also provided with a safety valve, and the input end of the safety valve passes through the upper cover and is communicated with the closed cavity inside the tank body.

6. The explosion-proof fire extinguishing tank for rapid fire extinguishing of lithium batteries of electric bicycles according to claim 1, It is characterized in that A handle is fixedly connected to the outer side of the tank body.

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