An aerosol fire extinguishing device and extinguishing method with an elastic spiral mesh.

Abstract

This invention discloses an aerosol fire extinguishing device and method with an elastic spiral mesh, comprising a cylinder and a fire extinguishing agent column disposed inside the cylinder. One end of the fire extinguishing agent column is connected to the end of an activation component. A front cover is provided at the front end of the cylinder, and a nozzle is provided on the surface of the front cover. A rear cover is provided at the rear end of the cylinder. An elastic spiral mesh in a spatial spiral shape is provided inside the cylinder between the end of the fire extinguishing agent column and the front cover. Coolant is provided on the surface of the elastic spiral mesh. By setting this elastic spiral mesh in a spatial spiral shape, this invention can separate the coolant when it sticks together, thereby preventing the coolant from clumping together and blocking the flow channel of the fire extinguishing material, effectively avoiding the problem of explosion. At the same time, it increases the contact time between the fire extinguishing material and the coolant, allowing most of the coolant to complete the thermal decomposition process, ultimately reducing the nozzle temperature.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing technology, and in particular to an aerosol fire extinguishing device and method with an elastic spiral mesh. Background Technology

[0002] Currently, thermal aerosol fire extinguishing devices on the market typically consist of two parts: an aerosol generator and a coolant. Previously, traditional thermal aerosol fire extinguishing devices used physical coolants such as ceramic balls as coolants. These coolants had poor cooling effects, so most thermal aerosol fire extinguishing devices now use chemical coolants (such as the chemical coolant described in CN116570874A - A chemical coolant for aerosol fire extinguishing agent and its preparation method) or a mixture of chemical and physical coolants.

[0003] When a chemical coolant is activated by an aerosol fire extinguishing device, it will gradually melt due to the high temperature of the hot aerosol fire extinguishing agent. The coolant will be squeezed together by the large amount of gas. In the molten state, the coolant particles will stick together. As the local temperature decreases, the sticky parts of the coolant will solidify. This will cause the coolant particles that should be independent to become a whole block of coolant, which can easily block the passage of the fire extinguishing device and cause the fire extinguishing device to explode.

[0004] In addition, if the aerosol is released too quickly, the contact time between the aerosol and the coolant will be short, resulting in poor cooling effect. Only part of the chemical coolant will actually complete the thermal decomposition process. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an aerosol fire extinguishing device and method with an elastic spiral mesh to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an aerosol fire extinguishing device with an elastic spiral mesh, comprising a cylinder and a fire extinguishing agent column disposed inside the cylinder, one end of the fire extinguishing agent column being connected to the end of an activation component, a front cover being provided at the front end of the cylinder, a nozzle being provided on the surface of the front cover, a rear cover being provided at the rear end of the cylinder, and an elastic spiral mesh in a spatial spiral shape being provided inside the cylinder between the end of the fire extinguishing agent column and the front cover, and a coolant being provided on the surface of the elastic spiral mesh.

[0007] Preferably, the starting component is a thermal wire structure or an electric starter structure.

[0008] Preferably, the outer side of the extinguishing agent column is also coated with a silicone layer.

[0009] Preferably, the extinguishing agent column is a cylindrical column structure formed by pressing aerosol generator powder.

[0010] Preferably, the elastic spiral mesh is fixedly provided with isolation mesh at both the bottom and top.

[0011] Preferably, the nozzle surface is further affixed with a sealing sticker.

[0012] Preferably, the holes on the surface of the elastic spiral mesh are circular sieve holes or mesh structures, and the elastic spiral mesh is made of elastic metal material.

[0013] In addition, the present invention also discloses a fire extinguishing method for the above-mentioned aerosol fire extinguishing device with elastic spiral mesh, which includes the following steps:

[0014] S1. When a fire occurs in the outside, the activation component ignites the extinguishing agent column, which burns to produce a high-temperature gaseous extinguishing substance. The high-temperature gaseous extinguishing substance passes through the elastic spiral mesh and is cooled by the coolant before being sprayed out from the nozzle.

[0015] S2. Under the pressure of the gaseous extinguishing agent, the coolant moves towards the nozzle side, causing the elastic spiral mesh to begin to compress. After gradually compressing to a certain extent, it will no longer compress.

[0016] S3. When the coolant comes into contact with the high-temperature gaseous extinguishing agent, its surface gradually melts into a molten state and covers the surface of the elastic spiral mesh, and they stick together. After the extinguishing agent column has been burning for a period of time, when the pressure difference between the inside and outside of the nozzle decreases or the local pressure difference of the elastic spiral mesh decreases, the elastic spiral mesh rebounds under its own elastic force and returns to its original length. The sticky coolant is pulled apart, thereby preventing the whole mass from clumping and blocking the flow channel of the extinguishing agent.

[0017] S4. After each turn of the elastic spiral mesh is covered with molten coolant, its pores become blocked, reducing the air permeability. This allows the extinguishing material to pass through the spiral channel formed by the elastic spiral mesh. The flow channel of the extinguishing material changes from a straight channel directly facing the nozzle to a spiral channel that travels along the surface of the elastic spiral mesh. The increased flow channel length increases the contact time between the extinguishing material and the coolant, ultimately reducing the nozzle temperature.

[0018] Beneficial effects of this invention:

[0019] 1. By setting up this elastic spiral mesh in a spatial spiral shape, the present invention can separate the coolant when it sticks together through its own elasticity, so that the coolant is not easy to clump together and block the flow channel of the fire extinguishing material, thus effectively avoiding the problem of explosion.

[0020] 2. After each turn of the elastic spiral mesh of the present invention is covered with molten coolant, its pores become blocked, and the air permeability decreases. This allows the extinguishing material to pass through the spiral channel formed by the elastic spiral mesh. The flow channel of the extinguishing material changes from a straight channel directly facing the nozzle to a spiral channel that travels along the surface of the elastic spiral mesh. The increased flow channel length increases the contact time between the extinguishing material and the coolant, allowing most of the coolant to complete the thermal decomposition process (endothermic process), ultimately reducing the nozzle temperature. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an aerosol fire extinguishing device with an elastic spiral mesh.

[0022] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of a medium-elastic spiral mesh;

[0023] Figure 3 A schematic diagram of the structure of an elastic spiral mesh after the holes have been removed;

[0024] Figure 4 This is a schematic diagram of the front view of the elastic spiral mesh after the holes have been removed. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1-4 As shown, an aerosol fire extinguishing device with an elastic spiral mesh includes a cylinder 1 and a fire extinguishing agent column 2 disposed inside the cylinder 1. One end of the fire extinguishing agent column 2 is connected to the end of an activation component 3. A front cover 4 is provided at the front end of the cylinder 1, and a nozzle 5 is provided on the surface of the front cover 4. A rear cover 6 is provided at the rear end of the cylinder 1. An elastic spiral mesh 7 in a spatial spiral shape is provided inside the cylinder 1 between the end of the fire extinguishing agent column 2 and the front cover 4. A coolant 8 is provided on the surface of the elastic spiral mesh 7.

[0027] Preferably, the starting component 3 is a thermal wire structure or an electric starter structure. When the starting component 3 is a thermal wire structure, the flame can directly ignite the thermal wire when a fire occurs, thereby igniting the extinguishing agent column 2. When the starting component 3 is an electric starter structure, it includes an electronic ignition head and a starting harness. The electronic ignition head is in contact with one end of the extinguishing agent column 2, and one end of the starting harness is connected to the electronic ignition head, while the other end passes through the rear cover 6 and is connected to an external power source. When the starting component 3 is an electric ignition head structure, it is connected to a fire detection device, which is a temperature sensor and / or a smoke sensor. When a fire or overheating occurs, the fire detection device detects the high-temperature environment caused by the fire and sends a signal to the microprocessor. The microprocessor controls the external power source to operate, causing the electronic ignition head to ignite, thereby igniting the extinguishing agent column 2.

[0028] Preferably, the outer side of the extinguishing agent column 2 is also covered with a silicone layer 2.1. The silicone layer 2.1 can prevent the cylinder 1 from overheating during the fire extinguishing process.

[0029] Preferably, the extinguishing agent column 2 is a cylindrical column structure formed by pressing aerosol generator powder.

[0030] Preferably, the elastic spiral mesh 7 is fixedly provided with isolation nets 9 at both the bottom and top. The isolation net 9 at the bottom can block the elastic spiral mesh 7 and the coolant 8 on its surface, preventing them from pressing against the starting component 3 below. At the same time, the isolation net 9 itself has mesh holes, so it does not affect the passage of extinguishing materials. The isolation net 9 at the top can prevent the coolant 8 from being sprayed out from the top nozzle 5 during the fire extinguishing process, thus providing a blocking effect, but it does not affect the passage of extinguishing materials.

[0031] In addition, in this embodiment, the elastic spiral mesh 7 itself is not fixed to the inner side of the cylinder 1, otherwise it will affect its expansion and contraction process during fire extinguishing; the upper and lower isolation meshes 9 can limit the elastic spiral mesh 7 before fire extinguishing; during fire extinguishing, the upper isolation mesh 9 can also support the upper end of the elastic spiral mesh 7, so that it can be compressed.

[0032] Preferably, the surface of the nozzle 5 is also covered with a sealing sticker. By setting the sealing sticker, moisture in the outside air can be prevented from entering the cylinder 1 along the nozzle 5 during normal storage and transportation of the fire extinguishing device, thus avoiding the phenomenon of moisture absorption by the fire extinguishing agent column 2.

[0033] Preferably, the holes on the surface of the elastic spiral mesh 7 are circular sieve holes or mesh structures, and the elastic spiral mesh 7 is made of elastic metal material.

[0034] In this embodiment, the coolant is a chemical coolant or a mixture of a chemical coolant and a physical coolant. The chemical coolant is one or a combination of two of potassium hydrogen tartrate and ferrocene, or the chemical coolant described in CN116570874A - A Chemical Coolant for Aerosol Fire Extinguishing Agent and its Preparation Method; the physical coolant is one or a combination of iron shavings, ceramic balls, and pebbles.

[0035] In addition, the present invention also discloses a fire extinguishing method for the above-mentioned aerosol fire extinguishing device with elastic spiral mesh, which includes the following steps:

[0036] S1. When a fire occurs in the outside, the starting component 3 ignites the extinguishing agent column 2. The extinguishing agent column 2 burns and produces a high-temperature gaseous extinguishing substance. The high-temperature gaseous extinguishing substance passes through the elastic spiral mesh 7 and is cooled by the coolant 8 before being sprayed out from the nozzle 5.

[0037] S2. Under the pressure of the gaseous extinguishing substance, the coolant 8 moves towards the nozzle 5, causing the elastic spiral mesh 7 to begin to compress and gradually compress to a certain extent before it stops compressing.

[0038] S3. When coolant 8 comes into contact with high-temperature gaseous extinguishing material, its surface gradually melts into a molten state and covers the surface of the elastic spiral mesh 7, and they stick together. After the extinguishing agent column 2 has been burning for a period of time, when the pressure difference between the inside and outside of the nozzle 5 decreases or the local pressure difference of the elastic spiral mesh 7 decreases, the elastic spiral mesh 7 rebounds under its own elastic force and returns to its original length. The sticky coolant 8 is pulled apart, thereby preventing the whole blockage of the flow channel of the extinguishing material.

[0039] S4. After each turn of the elastic spiral mesh 7 is covered with molten coolant 8, its pores become blocked, and the air permeability decreases. This allows the extinguishing material to pass through the spiral channel formed by the elastic spiral mesh 7. The flow channel of the extinguishing material changes from a straight channel that directly faces the nozzle 5 to a spiral channel that travels along the surface of the elastic spiral mesh 7. The flow channel lengthens, increasing the contact time between the extinguishing material and the coolant 8, and ultimately reducing the temperature of the nozzle 5.

[0040] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An aerosol fire extinguishing device with an elastic spiral mesh, comprising a cylinder (1) and a fire extinguishing agent column (2) disposed inside the cylinder (1), one end of the fire extinguishing agent column (2) being connected to the end of an activation component (3), a front cover (4) being provided at the front end of the cylinder (1), a nozzle (5) being provided on the surface of the front cover (4), and a rear cover (6) being provided at the rear end of the cylinder (1), characterized in that: The cylinder (1) between the end of the extinguishing agent column (2) and the front cover (4) is provided with an elastic spiral mesh (7) in a spatial spiral shape. The surface of the elastic spiral mesh (7) is provided with coolant (8). The elastic spiral mesh (7) itself is not fixed to the inside of the cylinder (1).

2. An aerosol fire extinguishing device with an elastic spiral mesh according to claim 1, characterized in that: The starting component (3) is a thermal wire structure or an electric starter structure.

3. An aerosol fire extinguishing device with an elastic spiral mesh according to claim 1, characterized in that: The fire extinguishing agent column (2) is also wrapped with a silicone layer (2.1).

4. An aerosol fire extinguishing device with an elastic spiral mesh according to claim 1, characterized in that: The extinguishing agent column (2) is a cylindrical column structure formed by pressing aerosol generator powder.

5. An aerosol fire extinguishing device with an elastic spiral mesh according to claim 1, characterized in that: The elastic spiral mesh (7) is fixedly provided with isolation mesh (9) at both the bottom and top.

6. An aerosol fire extinguishing device with an elastic spiral mesh according to claim 1, characterized in that: The nozzle (5) surface is also covered with a sealing sticker.

7. An aerosol fire extinguishing device with an elastic spiral mesh according to claim 1, characterized in that: The holes on the surface of the elastic spiral mesh (7) are circular sieve holes or mesh structures, and the elastic spiral mesh (7) is made of elastic metal material.

8. A method for extinguishing a fire using an aerosol fire extinguishing device with an elastic spiral mesh as described in any one of claims 1 to 7, characterized in that: It includes the following steps: S1. When a fire occurs in the outside world, the starting component (3) ignites the extinguishing agent column (2), and the extinguishing agent column (2) burns to produce a high-temperature gaseous extinguishing substance; the high-temperature gaseous extinguishing substance passes through the elastic spiral mesh (7) and is cooled by the coolant (8) before being sprayed out from the nozzle (5); S2. Under the pressure of the gaseous extinguishing substance, the coolant (8) moves toward the nozzle (5), causing the elastic spiral mesh (7) to begin to compress and gradually compress to a certain extent before it stops compressing. S3. When the coolant (8) comes into contact with the high-temperature gaseous extinguishing material, its surface gradually melts into a molten state and covers the surface of the elastic spiral mesh (7), and they stick together. After the extinguishing agent column (2) has been burning for a period of time, when the pressure difference between the inside and outside of the nozzle (5) decreases or the local pressure difference of the elastic spiral mesh (7) decreases, the elastic spiral mesh (7) rebounds under its own elastic force and returns to its original length. The sticky coolant (8) is pulled apart, thereby preventing the whole blockage of the extinguishing material flow channel. S4. After each turn of the elastic spiral mesh (7) is covered with molten coolant (8), its pores become blocked, and the air permeability decreases. This allows the extinguishing material to pass through the spiral channel formed by the elastic spiral mesh (7). The flow channel of the extinguishing material changes from a straight channel that directly faces the nozzle (5) to a spiral channel that travels along the surface of the elastic spiral mesh (7). The flow channel lengthens, increasing the contact time between the extinguishing material and the coolant (8), and ultimately reducing the temperature of the nozzle (5).

Images