Aerosol fire extinguishing device with cooling layer and method of extinguishing a fire

Abstract

The application discloses an aerosol fire extinguishing device with cooling layers and a fire extinguishing method, which comprises a cylinder body and a fire extinguishing agent column arranged in the cylinder body. One end of the fire extinguishing agent column is connected with the tail end of a starting part. The front end of the cylinder body is provided with a front cover. The surface of the front cover is provided with a nozzle. The rear end of the cylinder body is provided with a rear cover. A plurality of cooling layers with gaps exist in the cylinder body between the end of the fire extinguishing agent column and the front cover from top to bottom. A plurality of rotatable cooling agent columns are arranged in each cooling layer. The application solves the problem that the cooling agent is prone to adhesion, so that the cooling agent is not prone to adhesion as a whole to block the flow channel of the fire extinguishing substance, and the problem of explosion is effectively avoided. In addition, the circumferential surface of the cooling agent column can be in contact with the high-temperature gaseous fire extinguishing substance, the heating is more uniform, and the cooling effect is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fire extinguishing technology, in particular to an aerosol fire extinguishing device with cooling layers and a fire extinguishing method. BACKGROUND

[0002] At present, the hot aerosol fire extinguishing device on the market is usually composed of two parts of aerosol generating agent and coolant. Previously, the coolant used in the traditional hot aerosol fire extinguishing device is a physical coolant such as ceramic balls. The cooling effect of this coolant is poor, so at present, most of the hot aerosol fire extinguishing devices use chemical coolants (such as the chemical coolant described in CN116570874A-A kind of chemical coolant for aerosol fire extinguishing agent and preparation method) or a mixture of chemical coolants and physical coolants.

[0003] The chemical coolant will gradually melt under the influence of high temperature of the hot aerosol fire extinguishing agent after the aerosol fire extinguishing device is started. The coolants are squeezed together under the push of a large amount of gas. When in a molten state, the coolants are mutually adhered. With the reduction of local temperature, the adhered part of the coolants is fastened, which will cause the particles that should be independent to become a whole block of coolant, which is easy to block the channel of the fire extinguishing device, causing the fire extinguishing device to explode.

[0004] In addition, the position of the coolant is relatively fixed inside the fire extinguishing device, so the heated surface of the coolant is also relatively fixed, which will lead to uneven decomposition of the coolant under heat. The later the fire extinguishing device is sprayed, the worse the cooling effect of the coolant. SUMMARY

[0005] The purpose of the present application is to overcome the above-mentioned shortcomings and provide an aerosol fire extinguishing device with cooling layers and a fire extinguishing method to solve the problems raised in the background art.

[0006] To solve the above technical problems, the technical solution adopted by the present application is: an aerosol fire extinguishing device with cooling layers, comprising a cylinder and a fire extinguishing agent column arranged inside the cylinder, one end of the fire extinguishing agent column being connected with the end of a starting component, a front cover being arranged at the front end of the cylinder, a nozzle being arranged on the surface of the front cover, a rear cover being arranged at the rear end of the cylinder, and a plurality of cooling layers with gaps being arranged in parallel from top to bottom inside the cylinder between the end of the fire extinguishing agent column and the front cover, a plurality of rotatable coolant agent columns being arranged in each cooling layer.

[0007] Preferably, the cooling layer comprises a mounting ring fixedly connected with the inner wall of the cylinder, a plurality of metal wires being arranged in parallel in the mounting ring, the metal wires penetrating through the through holes arranged in the center of the coolant agent columns, the coolant agent columns being freely rotatable on the surface of the metal wires and gaps existing between the plurality of coolant agent columns.

[0008] Preferably, the starting component is a heat-sensitive wire structure or an electric starter structure.

[0009] Preferably, the outside of the fire extinguishing agent pill is further wrapped with a silica gel layer.

[0010] Preferably, the fire extinguishing agent pill is a cylindrical pill structure pressed by aerosol generating agent powder.

[0011] Preferably, the cooling agent pill is a cylindrical pill structure pressed by cooling agent powder.

[0012] Preferably, the surface of the nozzle is further attached with a sealing sticker.

[0013] In addition, the application further discloses a fire extinguishing method of the aerosol fire extinguishing device with the cooling layer, which comprises the following steps:

[0014] S1, when a fire occurs outside, the starting component ignites the fire extinguishing agent pill, the fire extinguishing agent pill burns to generate high-temperature gaseous fire extinguishing substances; the high-temperature gaseous fire extinguishing substances pass through the multiple cooling layers and are cooled by the cooling agent pills, and then are sprayed from the nozzle;

[0015] S2, under the impact of the gaseous fire extinguishing substances, when the surfaces of the multiple cooling agent pills in the cooling layer are unevenly stressed, the rotating motion occurs on the surface of the metal wire, so that the circumferential surface of the cooling agent pill can be in contact with the high-temperature gaseous fire extinguishing substances.

[0016] S3, since the cooling agent pills exist with gaps and rotate, the problem of adhesion of the cooling agent between the cooling agent pills does not occur.

[0017] The application has the following beneficial effects:

[0018] 1, the application solves the problem of easy adhesion of the cooling agent by arranging the cooling agent layer and the cooling agent pills with gaps, and the rotating motion of the cooling agent pills, so that the cooling agent is not easy to be integrally adhered to block the flow channel of the fire extinguishing substances, and the problem of explosion is effectively avoided.

[0019] 2, the application arranges the rotatable cooling agent pills, when the surface of the cooling agent pill is impacted by the gaseous fire extinguishing substances, the rotating motion occurs on the surface of the metal wire, so that the circumferential surface of the cooling agent pill can be in contact with the high-temperature gaseous fire extinguishing substances, the heating is more uniform, and the cooling effect is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic view of an aerosol fire extinguishing device with a cooling layer;

[0021] Figure 2 FIG. 2 is a sectional view of the cooling layer in FIG. 1; Figure 1

[0022] ​Figure 3 For Figure 2 Structure diagram after removing the mounting ring. DETAILED DESCRIPTION

[0023] The application will be further described in conjunction with the drawings and specific embodiments.

[0024] As Figures 1-3 shown, an aerosol fire extinguishing device with cooling layers includes a cylinder 1 and a fire extinguishing agent column 2 arranged in the cylinder 1, one end of the fire extinguishing agent column 2 is connected with the end of a starting component 3, the front end of the cylinder 1 is provided with a front cover 4, the surface of the front cover 4 is provided with a nozzle 5, the rear end of the cylinder 1 is provided with a rear cover 6, the inside of the cylinder 1 between the end of the fire extinguishing agent column 2 and the front cover 4 is provided with a plurality of cooling layers 7 in parallel from top to bottom, and each cooling layer 7 is provided with a plurality of rotatable fire extinguishing agent columns 7.1.

[0025] Preferably, the cooling layer 7 includes a mounting ring 7.2 fixedly connected with the inner wall of the cylinder 1, a plurality of metal wires 7.3 are arranged in parallel in the mounting ring 7.2, the metal wires 7.3 pass through the through holes formed in the center of the fire extinguishing agent columns 7.1, the fire extinguishing agent columns 7.1 can freely rotate on the surface of the metal wires 7.3, and there are gaps between the plurality of fire extinguishing agent columns 7.1. After such design, when the cylindrical fire extinguishing agent columns 7.1 are impacted by airflow, there will always be a moment of unbalanced force, at which time the fire extinguishing agent columns 7.1 will rotate, and in the actual fire extinguishing process, the gas generated by the combustion of the fire extinguishing agent column 2 moves upward, which is not necessarily a stable straight line direction, when it is blocked by the fire extinguishing agent columns 7.1, the local airflow will be disturbed, causing the direction of the local airflow to change, so that the fire extinguishing agent columns 7.1 are more likely to rotate after being impacted locally or on one side.

[0026] Preferably, the starting component 3 is a thermal fuse structure or an electric starter structure. When the starting component 3 is a thermal fuse structure, the flame can directly ignite the thermal fuse when a fire occurs outside, thereby igniting the fire extinguishing agent column 2. When the starting component 3 is an electric starter structure, it includes an electronic ignition head and a starting wire harness, the electronic ignition head is in contact with one end of the fire extinguishing agent column 2, one end of the starting wire harness is connected with the electronic ignition head, and the other end is connected with an external power source through the rear cover 6. When the starting component 3 is an electric ignition head structure, it is connected with a fire detection device, which is a temperature sensor and / or a smoke sensor, when a fire, overheating or other situation occurs, the fire detection device detects a high-temperature environment generated by the fire outside, sends a signal to a microprocessor, and the microprocessor controls the external power source to work, so that the electronic ignition head ignites, thereby igniting the fire extinguishing agent column 2;

[0027] Preferably, the outside of the fire extinguishing agent charge 2 is also wrapped with a silica gel layer 2.1. The silica gel layer 2.1 can avoid the situation that the temperature of the cylinder 1 is too high during the fire extinguishing process.

[0028] Preferably, the fire extinguishing agent charge 2 is a cylindrical charge structure pressed by aerosol generating agent powder.

[0029] Preferably, the cooling agent charge 7.1 is a cylindrical charge structure pressed by cooling agent powder.

[0030] Preferably, the surface of the nozzle 5 is also attached with a sealing sticker. By setting the sealing sticker, the moisture in the external air can be prevented from entering into the cylinder 1 along the nozzle 5 during the normal storage and transportation process of the fire extinguishing device, so as to avoid the phenomenon that the fire extinguishing agent charge 2 is absorbed moisture.

[0031] In the embodiment, the cooling agent is a chemical cooling agent or a mixture of a chemical cooling agent and a physical cooling agent. The chemical cooling agent is one or a combination of potassium hydrogen tartrate and ferrocene, or a chemical cooling agent described in CN116570874A-A kind of chemical cooling agent for aerosol fire extinguishing agent and preparation method. The physical cooling agent is one or a combination of iron filings powder, ceramic powder and goose warm stone powder.

[0032] In addition, the application also discloses a fire extinguishing method of the aerosol fire extinguishing device with the cooling layer, which comprises the following steps:

[0033] S1, when a fire occurs outside, the starting component 3 ignites the fire extinguishing agent charge 2, the fire extinguishing agent charge 2 burns to generate high-temperature gaseous fire extinguishing substances; the high-temperature gaseous fire extinguishing substances pass through the multiple cooling layers 7 and are cooled by the cooling agent charge 7.1, and then are sprayed from the nozzle 5;

[0034] S2, under the impact force of the gaseous fire extinguishing substances, when the surfaces of the multiple cooling agent charges 7.1 in the cooling layer 7 are unevenly stressed, the rotating motion occurs on the surface of the metal wire 7.3, so that the circumferential surface of the cooling agent charge 7.1 can be in contact with the high-temperature gaseous fire extinguishing substances.

[0035] S3, since there are gaps between the cooling agent charges 7.1 and the rotating motion occurs, the problem of adhesion of the cooling agent between the cooling agent charges 7.1 does not occur.

[0036] The above embodiment is only a preferred technical solution of the application, and should not be regarded as a limitation of the application. The protection scope of the application should be the technical solution recited in the claims, and includes the equivalent replacement solution of the technical features recited in the claims. That is, the equivalent replacement improvement within the scope is also within the protection scope of the application.

Claims

1. An aerosol fire extinguishing device with cooling layer, comprising a cylinder (1) and a fire extinguishing agent column (2) arranged in the cylinder (1), one end of the fire extinguishing agent column (2) is connected with the end of a starting component (3), the front end of the cylinder (1) is provided with a front cover (4), the surface of the front cover (4) is provided with a nozzle (5), the rear end of the cylinder (1) is provided with a rear cover (6), characterized in that: The inside of the barrel (1) between the end of the fire extinguishing agent propellant (2) and the front cover (4) is provided with multiple cooling layers (7) in parallel from top to bottom, each of which is provided with multiple rotatable cooling agent propellants (7.1); the cooling layer (7) comprises a mounting ring (7.2) fixedly connected with the inner wall of the barrel (1), multiple metal wires (7.3) are arranged in parallel in the mounting ring (7.2), the metal wires (7.3) pass through the through holes formed in the centers of the cooling agent propellants (7.1), the cooling agent propellants (7.1) can freely rotate on the surfaces of the metal wires (7.3) and there are gaps between the multiple cooling agent propellants (7.1); the starting component (3) is a heat-sensitive wire structure or an electric starter structure.

2. An aerosol fire extinguishing device with a cooling layer as defined in claim 1, characterized in that: The outside of the fire extinguishing agent propellant (2) is further wrapped with a silica gel layer (2.1).

3. An aerosol fire extinguishing device having a cooling layer as defined in claim 1, wherein: The fire extinguishing agent propellant (2) is a cylindrical propellant structure pressed by aerosol generating agent powder.

4. An aerosol fire extinguishing device having a cooling layer as defined in claim 1, wherein: The cooling agent propellant (7.1) is a cylindrical propellant structure pressed by cooling agent powder.

5. An aerosol fire extinguishing device having a cooling layer as defined in claim 1, wherein: The surface of the nozzle (5) is further attached with a sealing sticker.

6. A method of extinguishing a fire using the aerosol fire extinguishing device with a cooling layer according to any one of claims 1 to 5, characterized in that: It comprises the following steps: S1, when a fire occurs outside, the starting component (3) ignites the fire extinguishing agent propellant (2), the fire extinguishing agent propellant (2) burns to generate high-temperature gaseous fire extinguishing substances; the high-temperature gaseous fire extinguishing substances pass through multiple cooling layers (7) and are cooled by the cooling agent propellants (7.1) and then are sprayed from the nozzle (5); S2, under the impact of the gaseous fire extinguishing substances, when the surfaces of the multiple cooling agent propellants (7.1) in the cooling layer (7) are unevenly stressed, the cooling agent propellants (7.1) will rotate on the surfaces of the metal wires (7.3), so that the circumferential surfaces of the cooling agent propellants (7.1) can be in contact with the high-temperature gaseous fire extinguishing substances; S3, since the cooling agent propellants (7.1) have gaps and rotate, the cooling agent propellants (7.1) will not be connected to each other.

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