Aerosol fire extinguishing device with steel wire mesh cooling layer

Abstract

The utility model discloses an aerosol fire extinguishing device with a steel wire mesh cooling layer, which comprises a cylinder body and a fire extinguishing agent grain arranged in the cylinder body, one end of the fire extinguishing agent grain is connected with the tail end of a starting component, a front cover is arranged at the front end of the cylinder body, a nozzle is arranged on the surface of the front cover, and a rear cover is arranged at the rear end of the cylinder body. A plurality of cooling layers with gaps are arranged in the cylinder body between the end part of the fire extinguishing agent grain and the front cover in parallel from top to bottom, a plurality of coolants and steel wire meshes which are arranged at intervals are arranged in each cooling layer, and limiting plates are obliquely arranged at the adjacent positions of the coolants and the steel wire meshes; according to the utility model, the problem of poorer effect of the coolant caused by relatively fixed position of the coolant can be effectively prevented, and meanwhile, the problems of nozzle blockage caused by coolant adhesion and explosion caused by blockage of the fire extinguishing device are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing, in particular to an aerosol fire extinguishing device with a steel wire mesh cooling layer. Background Art

[0002] Thermal aerosol fire extinguishing devices usually consist of two parts: an aerosol generator and a coolant. Traditional thermal aerosol fire extinguishing devices use physical coolants such as ceramic balls, which have poor cooling effects. Therefore, most thermal aerosol fire extinguishing devices currently use chemical coolants or a mixture of chemical coolants and physical coolants.

[0003] After the aerosol fire extinguishing device is activated, the chemical coolant is affected by the high temperature of the hot aerosol fire extinguishing agent and will gradually melt. The coolant is squeezed together under the push of a large amount of gas. In the molten state, the coolants adhere to each other. As the local temperature decreases, the adhered parts of the coolant become tight, which will cause the independent particles of each coolant to become a whole piece of coolant, which can easily block the passage of the fire extinguishing device and cause the fire extinguishing device to explode.

[0004] Therefore, a fire extinguishing device with good cooling effect and no clogging is needed. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide an aerosol fire extinguishing device with a wire mesh cooling layer to solve the problems raised in the background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: an aerosol fire extinguishing device with a wire mesh cooling layer, comprising a cylinder and a fire extinguishing agent column arranged inside the cylinder, one end of the fire extinguishing agent column is connected to the end of the starting component, a front cover is provided at the front end of the cylinder, a nozzle is opened on the surface of the front cover, and a rear cover is provided at the rear end of the cylinder, and a plurality of cooling layers with gaps are arranged in parallel from top to bottom inside the cylinder between the end of the fire extinguishing agent column and the front cover, and a plurality of coolants and wire meshes arranged at intervals from each other are arranged in each cooling layer, and a limit plate is obliquely provided at the adjacent position of the coolant and the wire mesh.

[0007] Preferably, the cooling layer comprises a cavity fixedly connected to the inner wall of the cylinder, and the outer wall of the cavity is fixedly connected to the inner wall of the cylinder.

[0008] Preferably, the cavity is a cylindrical disk structure with a hollow interior, and sieve holes are evenly formed on the top and bottom of the cavity.

[0009] Preferably, the shape of the combination of the limiting plates on both sides of the wire mesh is a structure that is wide at the top and narrow at the bottom.

[0010] Preferably, the starting component is a thermistor structure or an electric starter structure.

[0011] Preferably, the outer side of the fire extinguishing agent column is also wrapped with a silica gel layer.

[0012] Preferably, the fire extinguishing agent charge is a cylindrical charge structure formed by pressing aerosol generating agent powder.

[0013] Beneficial effects of the utility model:

[0014] The utility model can effectively prevent the problem of poor coolant effect due to the relatively fixed position of the coolant, and at the same time prevent the blockage of the nozzle caused by the adhesion of the coolant and the explosion of the fire extinguishing device due to the blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of an aerosol fire extinguishing device with a wire mesh cooling layer;

[0016] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of the middle cooling layer. DETAILED DESCRIPTION

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] like Figure 1-2 As shown, an aerosol fire extinguishing device with a wire mesh cooling layer comprises a cylinder 1 and a fire extinguishing agent column 2 arranged inside the cylinder 1, one end of the fire extinguishing agent column 2 is connected to the end of a starting component 3, a front cover 4 is provided at the front end of the cylinder 1, a nozzle 5 is opened on the surface of the front cover 4, and a rear cover 6 is provided at the rear end of the cylinder 1, and a plurality of cooling layers 7 with gaps are arranged in parallel from top to bottom inside the cylinder 1 between the end of the fire extinguishing agent column 2 and the front cover 4, and a plurality of coolants 7.1 and wire meshes 7.2 arranged at intervals from each other are arranged in each cooling layer 7, and a limit plate 7.3 is obliquely provided at the position adjacent to the coolant 7.1 and the wire mesh 7.2.

[0019] Preferably, the cooling layer 7 comprises a cavity 7.4 fixedly connected to the inner wall of the cylinder 1, and the outer wall of the cavity 7.4 is fixedly connected to the inner wall of the cylinder 1.

[0020] Preferably, the cavity 7.4 is a cylindrical disk structure with a hollow interior, and sieve holes are evenly formed on the top and bottom of the cavity.

[0021] Preferably, the combination of the limiting plates 7.3 on both sides of the steel mesh 7.2 is in a structure that is wide at the top and narrow at the bottom. With this design, when the area where the coolant 7.1 is located is blocked, its flow passage is reduced, and the pressure inside the fire extinguishing device increases, so that the airflow passing through the area where the steel mesh 7.2 is located increases, and the pressure in this area increases. Due to this structural design that is wide at the top and narrow at the bottom, the limiting plates 7.3 on both sides of the steel mesh 7.2 move toward the coolant 7.1, thereby compressing the space of the coolant 7.1 and expanding the space of the steel mesh 7.2, which can reduce the sudden increase in pressure inside the fire extinguishing device.

[0022] Preferably, the starting component 3 is a thermistor structure or an electric starter structure. When the starting component 3 is a thermistor structure, when a fire occurs in the outside, the flame can directly ignite the thermistor, 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 harness. The electronic ignition head contacts one end of the fire extinguishing agent column 2. One end of the starting harness is connected to the electronic ignition head, and the other end passes through the back cover 6 to connect to the external power supply. 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, overheating, etc. occurs, the fire detection device detects that the high temperature environment is generated outside due to the fire, and sends a signal to the microprocessor. The microprocessor controls the external power supply to work, so that the electronic ignition head ignites, thereby igniting the fire extinguishing agent column 2;

[0023] Preferably, the fire extinguishing agent column 2 is also wrapped with a silica gel layer 2.1. The silica gel layer 2.1 can prevent the cylinder 1 from being overheated during the fire extinguishing process.

[0024] Preferably, the fire extinguishing agent charge 2 is a cylindrical charge structure formed by pressing aerosol generating agent powder.

[0025] 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 potassium hydrogen tartrate and ferrocene, or the chemical coolant described in CN116570874A - A chemical coolant for aerosol fire extinguishing agent and a preparation method; the physical coolant is one or a combination of iron shavings, ceramic particles, and goose warm stone particles.

[0026] The working principle of this embodiment is as follows:

[0027] S1. When a fire occurs outside, the starting component 3 ignites the fire extinguishing agent column 2, and the fire extinguishing agent column 2 burns to produce high-temperature gaseous fire extinguishing substances; the high-temperature gaseous fire extinguishing substances pass through the sieve holes at the bottom of each cooling layer 7, and after passing through the coolant 7.1 and cooling, pass through the sieve holes at the top of the cooling layer 7, and finally spray out from the nozzle 5; in this process, a part of the high-temperature gaseous fire extinguishing substances also passes through the area where the steel wire mesh 7.2 is located, which plays a certain cooling role. In addition, the steel wire mesh 7.2 has a good thermal conductivity and can also conduct heat to the coolant, allowing the undecomposed coolant 7.1 to further decompose and reduce the overall temperature of the fire extinguishing device.

[0028] S2. When the high-temperature gas fire extinguishing material passes through the coolant 7.1 of the cooling layer 7, the coolant 7.1 may melt and block the flow channel of the gas fire extinguishing material. When blockage occurs, the flow channel is reduced, and the pressure inside the fire extinguishing device increases, so that the airflow passing through the area where the steel wire mesh 7.2 is located increases, and the pressure in this area increases. Due to the structural design of wide top and narrow bottom, the limit plates 7.3 on both sides of the steel wire mesh 7.2 move toward the coolant 7.1, thereby compressing the space of the coolant 7.1 and expanding the space of the steel wire mesh 7.2, which can reduce the sudden increase in pressure inside the fire extinguishing device.

[0029] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An aerosol fire extinguishing device with a wire mesh cooling layer, comprising a cylinder (1) and a fire extinguishing agent column (2) arranged inside the cylinder (1), one end of the fire extinguishing agent column (2) is connected to the end of a starting component (3), a front cover (4) is provided at the front end of the cylinder (1), a nozzle (5) is provided on the surface of the front cover (4), and a rear cover (6) is provided at the rear end of the cylinder (1), characterized in that: A plurality of cooling layers (7) with gaps therebetween are arranged in parallel from top to bottom inside the cylinder (1) between the end of the extinguishing agent column (2) and the front cover (4), and each cooling layer (7) is provided with a plurality of coolants (7.1) and steel meshes (7.2) arranged at intervals from each other, and a limiting plate (7.3) is obliquely arranged at a position adjacent to the coolant (7.1) and the steel mesh (7.2).

2. The aerosol fire extinguishing device with a wire mesh cooling layer according to claim 1, characterized in that: The cooling layer (7) comprises a cavity (7.4) fixedly connected to the inner wall of the cylinder (1), and an outer wall of the cavity (7.4) is fixedly connected to the inner wall of the cylinder (1).

3. The aerosol fire extinguishing device with a wire mesh cooling layer according to claim 2, characterized in that: The cavity (7.4) is a cylindrical disk structure with a hollow interior, and sieve holes are evenly arranged on the top and bottom of the cavity.

4. The aerosol fire extinguishing device with a wire mesh cooling layer according to claim 1, characterized in that: The limiting plates (7.3) on both sides of the steel wire mesh (7.2) are combined in a shape of a structure that is wide at the top and narrow at the bottom.

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

6. The aerosol fire extinguishing device with a wire mesh cooling layer according to claim 1, characterized in that: The outer side of the fire extinguishing agent column (2) is also wrapped with a silica gel layer (2.1).

7. The aerosol fire extinguishing device with a wire mesh cooling layer according to claim 1, characterized in that: The fire extinguishing agent column (2) is a cylindrical column structure formed by pressing aerosol generating agent powder.

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