An aerosol fire extinguishing device with an elastic spiral partition

Abstract

The utility model discloses an aerosol fire extinguishing device with an elastic spiral partition net, 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 a starting component, a front cover is arranged at the front end of the cylinder, a nozzle is opened on the surface of the front cover, and a rear cover is arranged at the rear end of the cylinder, an elastic spiral partition net in a spatial spiral shape is arranged inside the cylinder between the end of the fire extinguishing agent column and the front cover, and a coolant is arranged on the surface of the elastic spiral partition net; by arranging the elastic spiral partition net in a spatial spiral shape, the utility model can pull the coolant apart through its own elastic force when the coolant is adhered, so that the coolant is not easy to agglomerate as a whole and block the flow channel of the fire extinguishing material, and the problem of explosion caused by this is effectively avoided; at the same time, the contact time between the fire extinguishing material and the coolant is increased, so that most of the coolant can complete the working process of thermal decomposition, and finally the nozzle temperature is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing, in particular to an aerosol fire extinguishing device with an elastic spiral partition net. Background Art

[0002] At present, the hot aerosol fire extinguishing device on the market usually consists of two parts: an aerosol generator and a coolant. In the past, the coolant used in the traditional hot aerosol fire extinguishing device was a physical coolant such as ceramic balls, which has a poor cooling effect. Therefore, the coolant used in most hot aerosol fire extinguishing devices is a chemical coolant (for example, the chemical coolant described in CN116570874A-a chemical coolant for aerosol fire extinguishing agent and a preparation method) or a mixture of a chemical coolant and a physical coolant.

[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 stick 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 channel of the fire extinguishing device and cause the fire extinguishing device to explode.

[0004] In addition, too fast aerosol spraying speed will result in a short contact time between the aerosol and the coolant, poor cooling effect, and the chemical coolant only partially completes the thermal decomposition work. 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 an elastic spiral partition net 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 an elastic spiral partition, 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, an elastic spiral partition in the shape of a spatial spiral is provided inside the cylinder between the end of the fire extinguishing agent column and the front cover, and a coolant is provided on the surface of the elastic spiral partition.

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

[0008] Preferably, the outer side of the fire extinguishing agent column is also wrapped with a silica gel layer.

[0009] Preferably, the fire extinguishing agent charge is a cylindrical charge structure formed by pressing aerosol generating agent powder.

[0010] Preferably, isolation nets are fixedly provided at the bottom and the top of the elastic spiral isolation net.

[0011] Preferably, a sealing sticker is also affixed to the surface of the nozzle.

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

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model provides the elastic spiral partition net in the shape of a spatial spiral, so that when the coolant is adhered, the coolant can be pulled apart by its own elastic force, so that the coolant is not easy to agglomerate as a whole and block the flow channel of the fire extinguishing material, effectively avoiding the problem of explosion.

[0015] 2. After each circle of the elastic spiral screen of the utility model covers the molten coolant, its holes are blocked and the air permeability decreases, so that the fire extinguishing material passes through the spiral channel formed by the elastic spiral screen. The flow channel of the fire extinguishing material is transformed from the original straight channel directly toward the nozzle to a spiral channel spirally moving along the surface of the elastic spiral screen. The flow channel is increased, which increases the contact time between the fire extinguishing material and the coolant, so that most of the coolant can complete the thermal decomposition process (heat absorption process), and finally reduce the nozzle temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an aerosol fire extinguishing device with an elastic spiral partition;

[0017] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the medium elastic spiral spacer;

[0018] Figure 3 This is a schematic diagram of the structure of the elastic spiral spacer after the holes are removed;

[0019] Figure 4 This is a schematic diagram of the front view structure of the elastic spiral spacer after the holes are removed. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1-4As shown, an aerosol fire extinguishing device with an elastic spiral partition net 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 an elastic spiral partition net 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, and a coolant 8 is provided on the surface of the elastic spiral partition net 7.

[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] Preferably, the bottom and top of the elastic spiral partition 7 are fixed with isolation nets 9. The isolation net 9 at the bottom can block the elastic spiral partition 7 and the coolant 8 on its surface to prevent it from pressing the starting component 3 below. At the same time, the isolation net 9 itself has mesh holes and does not affect the passage of the fire extinguishing material. The isolation net 9 at the top can prevent the coolant 8 from spraying out from the top nozzle 5 during the fire extinguishing process, playing a blocking effect, but does not affect the passage of the fire extinguishing material.

[0026] In addition, in this embodiment, the elastic spiral partition net 7 itself is not fixed to the inner side of the cylinder 1, otherwise it will affect its expansion and contraction process during the fire extinguishing process; and the upper and lower isolation nets 9 can limit the elastic spiral partition net 7 before the fire is extinguished; during the fire extinguishing process, the upper isolation net 9 can also support the upper end of the elastic spiral partition net 7, so that it can be in a compressed state.

[0027] Preferably, a sealing sticker is also attached to the surface of the nozzle 5. The sealing sticker can prevent moisture in the outside air from entering the cylinder 1 along the nozzle 5 during normal storage and transportation of the fire extinguishing device, thereby avoiding the phenomenon of moisture absorption by the fire extinguishing agent column 2.

[0028] Preferably, the holes on the surface of the elastic spiral spacer 7 are circular sieve holes or mesh structures, and the elastic spiral spacer 7 is made of elastic metal material.

[0029] 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 balls, and goose warm stones.

[0030] In addition, the utility model also discloses a fire extinguishing method of the aerosol fire extinguishing device with an elastic spiral partition net, which comprises the following steps:

[0031] 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 elastic spiral partition 7 and are cooled by the coolant 8, and then ejected from the nozzle 5;

[0032] S2. Under the pressure of the gaseous fire extinguishing substance, the coolant 8 moves toward the nozzle 5, causing the elastic spiral screen 7 to begin to be compressed, and will not be compressed further after being compressed to a certain extent;

[0033] S3, when the coolant 8 contacts the high-temperature gaseous fire extinguishing material, the surface gradually melts into a molten state and covers the surface of the elastic spiral partition 7, and they are adhered to each other; after the fire extinguishing agent column 2 burns 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 partition 7 decreases, the elastic spiral partition 7 rebounds under the action of its own elastic force and restores its original length, and the adhered coolant 8 is pulled apart, thereby preventing the whole from agglomerating and blocking the flow channel of the fire extinguishing material;

[0034] S4. After each circle of the elastic spiral screen 7 covers the molten coolant 8, its holes are blocked and the air permeability decreases, so that the fire extinguishing material passes through the spiral channel formed by the elastic spiral screen 7. The flow channel of the fire extinguishing material is transformed from the original straight channel directly toward the nozzle 5 to a spiral channel spirally moving along the surface of the elastic spiral screen 7. The flow channel is extended, which increases the contact time between the fire extinguishing material and the coolant 8, and finally reduces the temperature of the nozzle 5.

[0035] 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 an elastic spiral partition, 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: An elastic spiral partition net (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), and a coolant (8) is provided on the surface of the elastic spiral partition net (7).

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

3. The aerosol fire extinguishing device with an elastic spiral screen 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).

4. The aerosol fire extinguishing device with an elastic spiral screen 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.

5. The aerosol fire extinguishing device with an elastic spiral screen according to claim 1, characterized in that: Isolation nets (9) are fixedly provided at the bottom and top of the elastic spiral isolation net (7).

6. The aerosol fire extinguishing device with an elastic spiral screen according to claim 1, characterized in that: A sealing sticker is also affixed to the surface of the nozzle (5).

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

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