CN220070577U - Aerosol fire extinguishing device capable of improving diffusion capacity and reducing nozzle temperature - Google Patents

Abstract

The utility model discloses an aerosol fire extinguishing device capable of improving the diffusion capacity and reducing the nozzle temperature, which comprises an outer cylinder and an aerosol generating agent arranged in the outer cylinder, wherein one end of the aerosol generating agent is connected with the tail end of a starting part, the upper end of the outer cylinder is provided with an annular spraying cavity, and the side wall of the annular spraying cavity is provided with an air inlet; according to the utility model, the annular spraying cavity and the air inlet are arranged, so that the diffusion capacity of fire extinguishing substances can be effectively improved, and the nozzle temperature can be reduced.

Description

An aerosol fire extinguishing device that can increase diffusion capacity and reduce nozzle temperature

Technical field

The utility model relates to the field of fire protection technology, and specifically refers to an aerosol fire extinguishing device that can improve the diffusion capacity and reduce the temperature of the nozzle.

Background technique

Aerosol fire extinguishing devices mainly extinguish fires by total flooding in confined or semi-confined spaces. Therefore, whether the fire extinguishing device can quickly fill the entire protective space with aerosol fire extinguishing agent has become the key to whether the fire extinguishing device can quickly extinguish the fire.

When traditional aerosol fire extinguishing devices are sprayed, there is a problem that the nozzle temperature is too high. If the nozzle temperature cannot be effectively controlled, it may cause secondary damage to other properties in the protected space. The traditional cooling method mainly uses physical coolants (and stones). , iron cuttings and other heat-absorbing substances), the cooling efficiency is low, resulting in the device being too large. The large-volume fire extinguishing device combined with the coolant will reduce the spray intensity of the device and the diffusion ability of the fire extinguishing material.

Therefore, there is an urgent need for an aerosol fire extinguishing device that can improve the diffusion capacity and reduce the temperature of the nozzle.

Utility model content

The purpose of this utility model is to overcome the above-mentioned shortcomings and provide an aerosol fire extinguishing device that can improve the diffusion capacity and reduce the temperature of the nozzle, and can improve the diffusion capacity of fire extinguishing substances and reduce the temperature of the nozzle.

In order to solve the above technical problems, the technical solution adopted by this utility model is: an aerosol fire extinguishing device that can improve the diffusion capacity and reduce the temperature of the nozzle, including an outer cylinder and an aerosol generating agent located inside the outer cylinder. One end of the agent is connected to the end of the starting component, the upper end of the outer cylinder is provided with an annular spray cavity, and the side wall of the annular spray cavity is provided with an air inlet.

Preferably, the annular spray cavity includes an outer shell fixedly connected to the upper end of the outer cylinder, an inner shell is provided inside the outer shell, the upper and lower ends of the outer shell are open, the top of the inner shell is open, and the bottom is open. A bottom cover is provided, and air inlets are provided on the side walls of the outer shell and the inner shell.

Preferably, the bottom cover is fixedly connected to the sieve plate through a support rod, the outer edge of the sieve plate is fixedly connected to the inner wall of the outer cylinder, and a sieve hole is provided on the surface of the sieve plate.

Preferably, a coolant is provided between the sieve plate and the aerosol generating agent, and the starting component is an electric ignition head or a thermal wire structure.

Preferably, a protective cover net is provided at the end of the starting component, and a coolant is provided between the outside of the protective cover net and the screen plate.

Preferably, the coolant is also provided with a plurality of partitions inside, and separation columns are provided between the partitions.

Preferably, the surface of the bottom cover is also provided with a pressure relief hole, and the top of the outer shell and the top of the inner shell are both curved structures.

Preferably, a pressure relief diaphragm is also provided in the pressure relief hole.

Preferably, the aerosol generating agent has a grain column structure, and a silicone sleeve for heat insulation is provided on its surface.

Preferably, the lower end of the outer cylinder is provided with a back cover that is threadedly matched with the outer cylinder, and the back cover is provided with a through hole for inserting a starting component.

Beneficial effects of this utility model:

By arranging an annular spray cavity and an air inlet, the utility model can effectively improve the diffusion capacity of fire extinguishing substances and reduce the temperature of the nozzle.

Description of drawings

Figure 1 is a schematic diagram of the internal structure of an aerosol fire extinguishing device that can improve diffusion capacity and reduce nozzle temperature;

Figure 2 is a schematic structural diagram of an aerosol fire extinguishing device that can improve diffusion capacity and reduce nozzle temperature.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, an aerosol fire extinguishing device that can improve diffusion capacity and reduce nozzle temperature includes an outer cylinder 1 and an aerosol generating agent 2 located inside the outer cylinder 1. One end of the aerosol generating agent 2 is connected to the start-up The ends of the components 3 are connected. The upper end of the outer cylinder 1 is provided with an annular spray cavity 4, and the side wall of the annular spray cavity 4 is provided with an air inlet 5. In this embodiment, when the starting component 3 ignites the aerosol generating agent 2, a large amount of fire extinguishing substances (aerosol or gas) are generated, and then sprayed out from the annular spray chamber 4. When spraying, a jet is formed, causing a negative pressure inside the annular spray cavity 4, so that the air outside the annular spray cavity 4 enters the inside of the annular spray cavity 4 along the air inlet 5, and passes through the air inlet. 5 After a large amount of air is poured in, on the one hand, the flow of air plays a cooling role in the area where the nozzle is located, reducing the temperature of the nozzle. On the other hand, this increases the air flow rate near the fire extinguishing device, thereby enhancing the air mobility in the fire extinguishing area. Let the fire extinguishing medium quickly fill the entire fire extinguishing space, so that rapid fire extinguishing can be achieved.

Preferably, the annular spray cavity 4 includes an outer shell 4.1 fixedly connected to the upper end of the outer cylinder 1. An inner shell 4.2 is provided inside the outer shell 4.1. The upper and lower ends of the outer shell 4.1 are open, and the inner shell 4.1 is open. The top of the housing 4.2 is open, a bottom cover 4.3 is provided at the bottom, and an air inlet 5 is provided on the side walls of the outer housing 4.1 and the inner housing 4.2.

Preferably, the bottom cover 4.3 is fixedly connected to the screen plate 7 through the support rod 6, the outer edge of the screen plate 7 is fixedly connected to the inner wall of the outer cylinder 1, and the screen plate 7 is provided with screen holes on its surface. In this embodiment, the support rod 6 supports the screen plate 7 and can also form a certain buffer area. In addition, the screen plate 7 can also prevent the coolant 9 below from spraying upward and blocking the annular spray cavity 4

Preferably, a coolant 9 is provided between the sieve plate 7 and the aerosol generating agent 2, and the starting component 3 is an electric ignition head or a thermal wire structure. The coolant 9 can cool down the passing fire extinguishing material to prevent the temperature in the nozzle area from being too high; in addition, in this embodiment, when the starting component 3 is an electric ignition head structure, it is connected to the fire detection device, and the fire detection device is a temperature sensor. sensor and/or smoke sensor. When a fire, overheating, etc. occurs, the fire detection device detects the high temperature environment caused by the fire outside and sends a signal to the microprocessor. The microprocessor controls the starting component 3 to generate the aerosol generating agent. 2 lit. When the starting component 3 is a thermal wire structure, after a fire occurs, the high temperature or flame can directly ignite the thermal wire, and ultimately directly ignite the aerosol generating agent 2, without the need for additional fire detection devices and other external equipment.

Preferably, a protective cover net 10 is provided at the end of the starting component 3 , and a coolant 9 is provided between the outside of the protective cover net 10 and the screen plate 7 . After being designed in this way, the protective cover net 10 can form a protective cover to protect the end of the starting component 3 (thermal wire or ignition head). The coolant 9 will not reduce its energy when starting, effectively preventing the fire extinguishing device from being unable to start.

Preferably, the coolant 9 is also provided with a plurality of partitions 11 inside, and separation columns 12 are provided between the partitions 11 . The buffer space can be supported and separated in the coolant 9 by the dividing column 12. On the one hand, it can have a buffering effect on the aerosol fire-extinguishing material generated by the aerosol generating agent 2, and on the other hand, it can increase the distance between the coolant 9 and the aerosol fire-extinguishing material. Contact area improves cooling efficiency.

Preferably, the surface of the bottom cover 4.3 is also provided with a pressure relief hole 13, and the top of the outer shell 4.1 and the inner shell 4.2 are both curved structures. After the pressure relief hole 13 is provided, during the fire extinguishing process, if the internal pressure of the outer cylinder 1 is too large, it can be discharged through the pressure relief hole 13 to reduce the risk of explosion; in addition, the top of the outer shell 4.1 and the top of the inner shell 4.2 are both The arc structure allows the top of the annular spray chamber 4 to form a curved shape that converges toward the center of the circle. From an aerodynamic point of view, this undoubtedly speeds up the discharge of fire extinguishing materials.

Preferably, the pressure relief hole 13 is also provided with a pressure relief diaphragm. By arranging a pressure relief diaphragm inside the pressure relief hole 13, when the fire extinguishing device is started, if the discharge is normal, the bottom cover 4.3 of the annular discharge chamber 4 will be in a closed state, thus ensuring that the aerosol fire extinguishing material can flow along the The annular spray cavity 4 sprays out to exert its heat dissipation and diffusion effects. When the internal pressure of the fire extinguishing device suddenly increases too much, the pressure relief diaphragm will rupture due to the pressure, so that the fire extinguishing material is discharged from the pressure relief hole 13 in time. , perform the pressure relief process to effectively avoid the risk of explosion.

Preferably, the aerosol generating agent 2 has a grain column structure, and a silicone sleeve 14 for heat insulation is provided on its surface. The silicone sleeve 14 can prevent the temperature of the outer cylinder 1 from being too high during the fire extinguishing process.

Preferably, the lower end of the outer cylinder 1 is provided with a back cover 8 that is threadedly matched therewith, and the back cover 8 is provided with a through hole for inserting the activation component 3 .

The working principle of this embodiment is as follows:

When a fire occurs outside, the starting component 3 ignites the aerosol generating agent 2. The aerosol generating agent 2 in this embodiment is a grain column pressed by the aerosol generating agent. The aerosol generating agent 2 burns to cause fire extinguishing. Substances (such as aerosols or gases); after the fire-extinguishing substances pass through the protective cover net 10, they are cooled by the coolant 9, pass through the sieve holes of the sieve plate 7, enter the annular discharge chamber 4, and then exit from the annular discharge chamber When the airflow is ejected from the top of the annular spray cavity 4, a jet is formed, causing a negative pressure inside the annular spray cavity 4, so that the air outside the annular spray cavity 4 flows along the air inlet. 5 enters the annular spray cavity 4 and a large amount of air is poured in through the air inlet 5. On the one hand, the flow of air plays a cooling role in the area where the nozzle is located, reducing the temperature of the nozzle. On the other hand, this makes the fire extinguishing device The nearby air flow rate increases, thereby enhancing the air mobility in the fire extinguishing area, allowing the fire extinguishing medium to quickly fill the entire fire extinguishing space, thus enabling rapid fire extinguishing.

The above-mentioned embodiments are only preferred technical solutions of the present utility model and should not be regarded as limitations of the present utility model. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other as long as there is no conflict. The protection scope of the present utility model 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 utility model.

Claims (10)

1. The utility model provides an aerosol extinguishing device that can improve diffusivity and reduce spout temperature, includes urceolus (1) and locates inside aerosol generating agent (2) of urceolus (1), aerosol generating agent (2) one end and start-up member (3) end-to-end connection, its characterized in that: the novel water heater is characterized in that an annular spraying cavity (4) is arranged at the upper end of the outer barrel (1), and an air inlet (5) is formed in the side wall of the annular spraying cavity (4).

2. An aerosol fire suppression apparatus for enhancing diffusing capacity and reducing nozzle temperature as set forth in claim 1 wherein: the annular spraying cavity (4) comprises an outer shell (4.1) fixedly connected with the upper end of the outer cylinder (1), an inner shell (4.2) is arranged inside the outer shell (4.1), the upper end and the lower end of the outer shell (4.1) are open, the top of the inner shell (4.2) is open, a bottom cover (4.3) is arranged at the bottom, and an air inlet (5) is formed in the side walls of the outer shell (4.1) and the inner shell (4.2).

3. An aerosol fire suppression apparatus for enhancing diffusing capability and reducing nozzle temperature as set forth in claim 2 wherein: the bottom cover (4.3) is fixedly connected with the sieve plate (7) through the supporting rod (6), the outer edge of the sieve plate (7) is fixedly connected with the inner wall of the outer cylinder (1), and sieve holes are formed in the surface of the sieve plate (7).

4. An aerosol fire suppression apparatus for enhancing diffusing capacity and reducing nozzle temperature as set forth in claim 3 wherein: a coolant (9) is also arranged between the sieve plate (7) and the aerosol generating agent (2), and the starting component (3) is an electric ignition head or a thermosensitive wire structure.

5. An aerosol fire suppression apparatus for enhancing diffusing capacity and reducing nozzle temperature as set forth in claim 4 wherein: the tail end of the starting part (3) is provided with a protective cover net (10), and a coolant (9) is arranged between the outer side of the protective cover net (10) and the sieve plate (7).

6. An aerosol fire suppression apparatus for enhancing diffusing capacity and reducing nozzle temperature as set forth in claim 4 or 5 wherein: a plurality of separation nets (11) are further arranged in the coolant (9), and separation columns (12) are arranged between the separation nets (11).

7. An aerosol fire suppression apparatus for enhancing diffusing capability and reducing nozzle temperature as set forth in claim 2 wherein: the surface of the bottom cover (4.3) is also provided with a pressure relief hole (13), and the top of the outer shell (4.1) and the top of the inner shell (4.2) are both cambered structures.

8. An aerosol fire suppression apparatus for enhancing diffusing capacity and reducing nozzle temperature as set forth in claim 7 wherein: and a pressure relief diaphragm is also arranged in the pressure relief hole (13).

9. An aerosol fire suppression apparatus for enhancing diffusing capacity and reducing nozzle temperature as set forth in claim 1 wherein: the aerosol generating agent (2) is of a grain structure, and a silica gel sleeve (14) for heat insulation is arranged on the surface of the aerosol generating agent.

10. An aerosol fire suppression apparatus for enhancing diffusing capacity and reducing nozzle temperature as set forth in claim 4 wherein: the lower end of the outer cylinder (1) is provided with a rear cover (8) in threaded fit with the outer cylinder, and the rear cover (8) is provided with a through hole for penetrating the starting component (3).