Aerosol fire extinguishing device provided with gas flow dividing disc and fire extinguishing method thereof

Abstract

An aerosol fire extinguishing device provided with a gas flow dividing disc and a fire extinguishing method thereof. The aerosol fire extinguishing device comprises an outer cylinder (1) and a fire extinguishing agent column (2) provided inside the outer cylinder; one end of the fire extinguishing agent column is connected to the tail end of a starting component (3); a front cover (4) is provided on the front side of the outer cylinder; nozzle openings (5) are formed in the surface of the front cover; a rotatable gas flow dividing disc (6) is provided on the front sides of the nozzle openings. The flow velocity and the temperature of the nozzle openings of the aerosol fire extinguishing device can be effectively reduced, and flames can be prevented from being sprayed outwards.

Description

Aerosol fire extinguishing device with gas diversion disk and fire extinguishing method thereof Technical Field

[0001] The invention relates to the technical field of aerosol fire extinguishing, in particular to an aerosol fire extinguishing device with a gas diverter plate and a fire extinguishing method thereof. Background Art

[0002] The aerosols in aerosol fire extinguishers currently on the market are all solid-based thermal aerosols. Their fire extinguishing agents are mainly composed of oxidants, fuels, catalysts and additives. The fire extinguishing agents need to undergo an exothermic combustion reaction. When spraying, there may be phenomena such as excessive spraying flow rate, excessive nozzle temperature, and flame spraying outward, which may cause secondary damage to the protected objects. Therefore, reducing the nozzle flow rate and temperature of aerosol fire extinguishers has become an important indicator of the safety of such products.

[0003] Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an aerosol fire extinguishing device with a gas diverter plate and a fire extinguishing method thereof, which can reduce the flow rate and temperature of the nozzle of the aerosol fire extinguishing device and prevent the flame from spraying out.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: an aerosol fire extinguishing device with a gas diverter disk, comprising an outer cylinder and a fire extinguishing agent column arranged inside the outer cylinder, one end of the fire extinguishing agent column is connected to the end of the starting component, a front cover is provided on the front side of the outer cylinder, a nozzle is opened on the surface of the front cover, and a rotatable gas diverter disk is provided on the front side of the nozzle.

[0006] Preferably, a membrane is provided on the outer layer and / or inner side of the nozzle.

[0007] Preferably, the gas diverter disc is an axial flow fan blade structure.

[0008] Preferably, the center position of the gas diversion plate is rotatably connected to one end of the support rod, and the other end of the support rod is installed at the center position of the front cover.

[0009] Preferably, one end of the support rod is provided with an internal threaded hole that cooperates with one end of a half-thread screw, and the other end of the half-thread screw is sleeved into the central through hole of the gas diversion plate.

[0010] Preferably, the starting component is an electric ignition head or a thermal wire structure, and an isolation frame is provided at the position where the end of the starting component contacts one end of the fire extinguishing agent column.

[0011] Preferably, a coolant is provided between the ignition end of the fire extinguishing agent charge and the nozzle.

[0012] Preferably, the coolant includes a physical coolant and a chemical coolant, the physical coolant is one or more combinations of iron shavings, ceramic balls, and goose warming stones, and the chemical coolant is one or more combinations of potassium nitrate, potassium hydrogen tartrate, and ferrocene.

[0013] Preferably, the front side of the outer cylinder is threadably matched with the front cover, and the rear side of the outer cylinder is provided with a rear cover threadably matched with the front cover, and the rear cover is provided with a through hole for passing the starting component.

[0014] In addition, the present invention also discloses a fire extinguishing method using the aerosol fire extinguishing device with a gas diverter plate, which comprises the following steps:

[0015] S1: When a fire occurs, the starting component ignites the fire extinguishing agent column to form an aerosol fire extinguishing substance. After being cooled by the coolant, the aerosol is torn through the membrane and ejected from the nozzle of the front cover;

[0016] S2: The aerosol fire extinguishing substance is ejected from the nozzle and continuously hits the gas diverter disc, causing the gas diverter disc to rotate. The kinetic energy of the aerosol fire extinguishing substance during ejection is partially converted into the kinetic energy of the gas diverter disc's rotation, thereby reducing the ejection velocity of the aerosol fire extinguishing substance.

[0017] S3: When the gas diverter disc rotates, it also cuts and disperses the aerosol fire extinguishing material, causing it to spread out in advance, effectively reducing the temperature in the nozzle area and preventing the flame from spraying out of the nozzle;

[0018] S4: The fire extinguishing process is carried out by the aerosol fire extinguishing material spread by the rotation of the gas diversion disk.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention can effectively reduce the nozzle flow rate and temperature of the aerosol fire extinguishing device and prevent the flame from spraying out;

[0021] 2. The aerosol fire extinguishing material in the present invention continuously impacts the gas diverter disk when ejected from the nozzle, causing the gas diverter disk to rotate. Part of the kinetic energy of the aerosol fire extinguishing material during ejection is converted into the kinetic energy of the gas diverter disk's rotation, thereby reducing the ejection velocity of the aerosol fire extinguishing material and reducing the impact damage to the protected object.

[0022] 3. When the gas diversion disk in the present invention rotates, it will also cut and break up the aerosol fire extinguishing material, causing it to spread out in advance, effectively reducing the temperature of the nozzle area, and preventing the flame at the nozzle from spraying out.

[0023] 4. After the traditional fire extinguishing device is activated, the aerosol generator produces a large amount of gas, which is ejected through the nozzle of the front cover. The path of the high-temperature and high-pressure gas ejecting from the nozzle is relatively fixed, the gas density is high, and the temperature is relatively concentrated. There are phenomena of excessive nozzle temperature and flame spraying outward. However, the present invention provides a gas diverter disk, which disperses the path of the airflow ejecting from the nozzle, reduces the gas density, and makes the temperature more dispersed, thereby solving the problems of excessive nozzle temperature and flame spraying outward. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is a schematic structural diagram of an aerosol fire extinguishing device with a gas diverter plate;

[0025] FIG2 is an enlarged structural diagram of the area where the gas diverter plate is located in FIG1 ;

[0026] FIG3 is a schematic diagram of the exploded structure of FIG1 . DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0028] As shown in Figures 1 to 3, an aerosol fire extinguishing device with a gas diverter disk includes an outer cylinder 1 and a fire extinguishing agent column 2 arranged inside the outer cylinder 1. One end of the fire extinguishing agent column 2 is connected to the end of the starting component 3. A front cover 4 is provided on the front side of the outer cylinder 1. A nozzle 5 is opened on the surface of the front cover 4. A rotatable gas diverter disk 6 is provided on the front side of the nozzle 5.

[0029] Preferably, a diaphragm 7 is provided on the outer layer and / or inner side of the nozzle 5. This diaphragm 7 prevents moisture from entering the outside air when the fire extinguishing device is not in use, potentially causing decomposition, aging, or moisture absorption of the extinguishing agent charge 2 and coolant 10 within the device. Furthermore, during the fire extinguishing process, upon impact with the extinguishing agent, the diaphragm 7 becomes fragile, ensuring that the extinguishing agent is ejected from the nozzle 5. Specifically, the diaphragm 7 can be made of PVC stickers, fragile stickers, plastic film, or rubber film.

[0030] Preferably, the gas diverter plate 6 has an axial fan blade structure. In this embodiment, the blades of the gas diverter plate 6 are inclined at a certain angle relative to their radial plane. This structure allows the gas diverter plate 6 to efficiently rotate when the aerosol fire extinguishing material passes through it, so that the kinetic energy of the aerosol fire extinguishing material during discharge is partially converted into kinetic energy for the rotation of the gas diverter plate 6.

[0031] More preferably, when the gas diverter plate 6 is made of metal, the metal has better thermal conductivity and can quickly disperse the temperature to various places instead of concentrating it on the nozzle, thereby reducing the local temperature. In addition, by subsequently adjusting the outer diameter of the gas diverter plate 6, the number and inclination angle of the blades, the angle between the blades, and the distance from the front cover nozzle, the angle and speed of the ejected airflow can be changed.

[0032] Preferably, the center position of the gas diverter plate 6 is rotatably connected to one end of the support rod 8 , and the other end of the support rod 8 is installed at the center position of the front cover 4 .

[0033] Preferably, one end of the support rod 8 is provided with an internal threaded hole that cooperates with one end of a half-thread screw 9, and the other end of the half-thread screw 9 is sleeved into the central through hole of the gas diverter disc 6. This fixing method is simple to assemble and disassemble, and ultimately allows the gas diverter disc 6 to rotate with the half-thread screw 9 as the central axis, wherein a portion of the half-thread screw 9 is screwed into the internal threaded hole at one end of the support rod 8, and the other portion of the half-thread screw 9 is sleeved on the gas diverter disc 6, which can ensure that the gas diverter disc 6 can rotate freely around the half-thread screw 9. In addition, by adjusting the depth of the half-thread screw 9 screwed into the internal threaded hole at one end of the support rod 8, the maximum distance between the gas diverter disc 6 and the nozzle 5 can be changed, so that the angle and speed of the ejected airflow can be conveniently adjusted.

[0034] Preferably, described starting component 3 is electric ignition head or thermal wire structure, and the position that starting component 3 end contacts with one end of fire extinguishing agent charge 2 is provided with isolation frame 12.In the present embodiment, when starting component 3 is electric ignition head structure (starting component in Fig. 1 is electric ignition head form), it is temperature sensor and / or smoke sensor that it is connected with fire detection device fire detection device.When there is fire, overheating etc. situation to occur, after fire detection device detects that outside produces high temperature environment because of fire, sends signal to microprocessor in the present embodiment, microprocessor can select 51 single chip microcomputer, model is 80C51 single chip microcomputer, or select STM32 microprocessor, model is STM32F103, microprocessor control starting component 3 ignites fire extinguishing agent charge 2.And when starting component 3 is thermal wire structure, because thermal wire structure is relatively simple, when adopting thermal wire, can start automatically when fire occurs, thermal wire directly ignites fire extinguishing agent charge 2, need not to collocate extra fire detection device and other external equipment.

[0035] In addition, the isolation frame 12 can effectively prevent the coolant 10 from pressing the end of the starting component 3, thereby preventing the failure of the starting ignition process.

[0036] Preferably, a coolant 10 is provided between the ignition end of the fire extinguishing agent column 2 and the nozzle 5. The coolant 10 can cool the fire extinguishing substance (such as aerosol or gas) produced by the fire extinguishing agent column 2. After cooling, it is ejected from the nozzle 5, which can reduce the temperature at the nozzle 5 of the fire extinguishing device.

[0037] Preferably, the coolant 10 includes a physical coolant 10.1 and a chemical coolant 10.2, the physical coolant 10.1 is one or more combinations of iron shavings, ceramic balls, and goose warming stones, and the chemical coolant 10.2 is one or more combinations of potassium nitrate, potassium hydrogen tartrate, and ferrocene.

[0038] Preferably, the front side of the outer cylinder 1 is threadedly engaged with the front cover 4 , and the rear side of the outer cylinder 1 is provided with a rear cover 11 threadedly engaged therewith, and the rear cover 11 is provided with a through hole for passing the starting component 3 .

[0039] In addition, the present invention also discloses a fire extinguishing method using the aerosol fire extinguishing device with a gas diverter plate, which comprises the following steps:

[0040] S1: When a fire occurs, the starting component 3 ignites the fire extinguishing agent charge 2 (the fire extinguishing agent charge 2 in this embodiment is a charge formed by pressing an aerosol generating agent), forming an aerosol fire extinguishing substance. After being cooled by the coolant 10, the aerosol is torn through the membrane 7 and ejected from the nozzle 5 of the front cover 4;

[0041] S2: The aerosol fire extinguishing substance is ejected from the nozzle 5 and continuously hits the gas diverter plate 6, causing the gas diverter plate 6 to rotate. The kinetic energy of the aerosol fire extinguishing substance during ejection is partially converted into the kinetic energy of the gas diverter plate 6 rotation, thereby reducing the ejection velocity of the aerosol fire extinguishing substance.

[0042] S3: When the gas diverter plate 6 rotates, it also cuts and breaks up the aerosol fire extinguishing material, causing it to spread out in advance, effectively reducing the temperature in the nozzle 5 area and preventing the flame from spraying out of the nozzle 5;

[0043] S4: The aerosol fire extinguishing substance diffused by the rotation of the gas diverter plate 6 performs the fire extinguishing process.

[0044] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The embodiments and features in the embodiments of this application may be arbitrarily combined with each other unless they conflict. The scope of protection of the present invention shall be the technical solutions described in the claims, including equivalent alternatives to the technical features of the technical solutions described in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An aerosol fire extinguishing device with a gas diverter plate, comprising an outer cylinder (1) and a fire extinguishing agent column (2) arranged inside the outer 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 arranged on the front side of the outer cylinder (1), and a spray port (5) is formed on the surface of the front cover (4). It is characterized in that: A rotatable gas diverter disk (6) is provided on the front side of the nozzle (5).

2. The aerosol fire extinguishing device with a gas diverter tray according to claim 1, characterized in that: A diaphragm (7) is provided on the outer layer and / or the inner side of the nozzle (5).

3. The aerosol fire extinguishing device with a gas diverter plate according to claim 1, characterized in that: The gas diverter disk (6) has an axial flow fan blade structure.

4. The aerosol fire extinguishing device with a gas diverter tray according to claim 3, characterized in that: The center position of the gas diverter disk (6) is rotatably connected to one end of a support rod (8), and the other end of the support rod (8) is installed at the center position of the front cover (4).

5. The aerosol fire extinguishing device with a gas diverter tray according to claim 4, characterized in that: An internal threaded hole for mating with one end of a half-thread screw (9) is provided at one end of the support rod (8), and the other end of the half-thread screw (9) is sleeved in the central through hole of the gas diverter disk (6).

6. The aerosol fire extinguishing device with a gas diverter tray according to claim 1, characterized in that: The starting component (3) is of an electric ignition head or a thermal wire structure, and an isolation frame (12) is provided at the position where the end of the starting component (3) contacts one end of the fire extinguishing agent column (2).

7. The aerosol fire extinguishing device with a gas diverter plate according to claim 1, characterized in that: A coolant (10) is further provided between the ignition end of the fire extinguishing agent column (2) and the nozzle (5).

8. The aerosol fire extinguishing device with a gas diverter plate according to claim 7, characterized in that: The coolant (10) includes a physical coolant (10.1) and a chemical coolant (10.2). The physical coolant (10.1) is one or a combination of iron filings, ceramic balls, and goose stones, and the chemical coolant (10.2) is one or a combination of potassium nitrate, potassium hydrogen tartrate, and ferrocene.

9. The aerosol fire extinguishing device with a gas diverter tray according to claim 1, characterized in that: The front side of the outer cylinder (1) is in threaded fit with the front cover (4), and a rear cover (11) in threaded fit with it is provided at the rear side of the outer cylinder (1). The rear cover (11) is provided with a through hole for passing through the starting component (3).

10. A fire extinguishing method for an aerosol fire extinguishing device with a gas diverter plate according to any one of claims 1 to 9, characterized in that: It includes the following steps: S1: When a fire occurs, the starting component (3) ignites the fire extinguishing agent column (2) to form an aerosol fire extinguishing substance. After being cooled by the coolant (10), the diaphragm (7) is torn and ejected from the nozzle (5) of the front cover (4). S2: The aerosol fire extinguishing substance is ejected from the nozzle (5) and continuously impacts the gas diverter disk (6), causing the gas diverter disk (6) to rotate. Part of the kinetic energy when the aerosol fire extinguishing substance is ejected is converted into the kinetic energy of the rotation of the gas diverter disk (6), thereby reducing the ejection flow rate of the aerosol fire extinguishing substance. S3: When the gas diverter disk (6) rotates, it will also cut and disperse the aerosol fire extinguishing substance, causing it to spread in advance, effectively reducing the temperature in the area of the nozzle (5), and blocking the outward spraying of the flame at the nozzle (5). S4: The aerosol fire extinguishing substance that spreads due to the rotation of the gas diverter disk (6) undergoes a fire extinguishing process.

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