Perfluorohexanone fire extinguishing device capable of being repeatedly used

Abstract

The utility model discloses a reusable perfluorohexanone fire extinguishing device which comprises an outer cylinder, a piston is arranged in the outer cylinder, the top of the outer cylinder is detachably connected with a front cover, the surface of the front cover is provided with a nozzle, the bottom of the front cover is fixedly connected with the top of an inner cylinder, and the bottom of the inner cylinder is matched with a detachable heat insulation disc. The side wall of the inner barrel is located in a gap between the outer side of the piston and the inner side of the outer barrel, the bottom of the outer barrel is connected with a rear cover, a gas production device communicated with the lower portion of the piston is arranged on the surface of the rear cover, and a perfluorohexanone fire extinguishing agent is arranged in the inner barrel; according to the device, the process of replacing the fire extinguishing inner core is simple and efficient, and the cost of related materials is saved; meanwhile, in the replacement process, the surface of the piston can be covered with the heat insulation disc capable of falling off, so that after the fire extinguishing device is started, heat generated by combustion of a gas generating agent at the bottom of the piston can be isolated, and the situation that the fire extinguishing effect is reduced due to heat absorption decomposition of a perfluorohexanone fire extinguishing agent is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of perfluorohexanone fire extinguishing, in particular to a reusable perfluorohexanone fire extinguishing device. Background Art

[0002] Non-pressure storage type perfluorohexanone fire extinguishing devices usually use aerosol generators as the power agent of the fire extinguishing agent. When the fire extinguishing device is started, the electronic ignition head generates energy to excite the aerosol generator, and the aerosol generator produces a large amount of gas to push the perfluorohexanone in the fire extinguishing device out.

[0003] Aerosol generators often produce a large amount of gas accompanied by huge heat. Perfluorohexanone fire extinguishing agent will absorb heat and decompose when exposed to high temperature. This will cause the perfluorohexanone fire extinguishing agent to absorb heat and react before it is sprayed out of the fire extinguishing device. When perfluorohexanone enters the fire scene, its fire extinguishing ability will be greatly reduced.

[0004] In addition, the perfluorohexanone fire extinguishing devices currently used are all disposable. After being used to extinguish a fire, the fire extinguishing core cannot be replaced for reuse, which reduces the utilization rate of related components of the fire extinguishing device (such as the metal casing) and causes certain waste.

[0005] In addition, most of the current perfluorohexanone fire extinguishing devices are equipped with a separate gas generating device. If the gas generating device fails (for example, the gas generating agent absorbs moisture, resulting in a reduction in gas production or the electric ignition head fails to ignite), the perfluorohexanone fire extinguishing device will not be able to spray normally and the fire extinguishing process will not be able to proceed. Utility Model Content

[0006] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a reusable perfluorohexanone fire extinguishing device to solve the problems raised in the background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a reusable perfluorohexanone fire extinguishing device, comprising an outer cylinder, a piston is provided in the outer cylinder, a front cover is detachably connected to the top of the outer cylinder, a nozzle is provided on the surface of the front cover, the bottom of the front cover is fixedly connected to the top of the inner cylinder, the bottom of the inner cylinder is matched with a detachable heat insulation disk, the side wall of the inner cylinder is located in the gap between the outside of the piston and the inside of the outer cylinder, the bottom of the outer cylinder is connected to the rear cover, and a plurality of gas generating devices connected to the bottom of the piston are detachably connected on the surface of the rear cover, and perfluorohexanone fire extinguishing agent is provided inside the inner cylinder.

[0008] Preferably, the front cover and the inner cylinder are an integrated structure, and the inner cylinder and the detachable insulation plate are made of insulation material.

[0009] Preferably, the bottom of the inner cylinder is fixedly connected to the detachable heat-insulating plate, and the outer edge of the detachable heat-insulating plate is provided with a groove.

[0010] Preferably, the bottom of the inner cylinder is fixedly connected to the detachable heat insulation disk, and the outer edge of the top of the piston is a pointed structure.

[0011] Preferably, the front cover is threadedly connected to the top of the outer cylinder, and the rear cover is threadedly connected to the bottom of the outer cylinder.

[0012] Preferably, the piston is a cylindrical structure with a closed top and an open bottom, and an annular mounting groove matching the bottom of the piston is provided on the outer edge of the rear cover.

[0013] Preferably, a protective sticker is also provided at the nozzle position.

[0014] Preferably, the gas generating device comprises a gas generating cylinder body detachably connected to the rear cover, a gas generating agent is arranged in the gas generating cylinder body, and the gas generating agent is connected to the electric ignition head of the starting component.

[0015] Preferably, the gas generating agent is a drug column structure formed by pressing aerosol generating agent powder, and its outer surface is coated with a silica gel layer.

[0016] Preferably, an ignition powder bag is further provided on the periphery of the electric ignition head, the surface of the ignition powder bag is fixedly connected to the inner wall of the silica gel layer, and the ignition powder bag is filled with aerosol generating agent powder.

[0017] Beneficial effects of the present invention: The process of replacing the fire extinguishing inner core of the device of the present invention is simple and efficient, which can further improve the utilization rate of the relevant components of the fire extinguishing device and save the cost of relevant materials; at the same time, during the replacement process, the detachable heat insulation disk can be covered on the surface of the piston, so that after the fire extinguishing device is started, the heat generated by the combustion of the gas generating agent at the bottom of the piston can be isolated, thereby avoiding the decomposition of the perfluorohexanone fire extinguishing agent due to endothermic decomposition and reducing the fire extinguishing effect; at the same time, since the present invention is provided with multiple gas generating devices, it can effectively avoid the problem that the perfluorohexanone fire extinguishing device cannot spray normally due to the failure of a single gas generating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a reusable perfluorohexanone fire extinguishing device after the fire extinguishing core is replaced;

[0019] Figure 2 for Figure 1 An enlarged structural diagram of the area where the gas production device is located;

[0020] Figure 3 This is a schematic diagram of the structure of the new fire extinguishing core before replacement;

[0021] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of the area where the detachable insulation plate is located. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1-4 As shown, a reusable perfluorohexanone fire extinguishing device includes an outer cylinder 1, a piston 2 is provided in the outer cylinder 1, a front cover 3 is detachably connected to the top of the outer cylinder 1, a nozzle 4 is provided on the surface of the front cover 3, the bottom of the front cover 3 is fixedly connected to the top of the inner cylinder 9, the bottom of the inner cylinder 9 is matched with a detachable heat-insulating disk 5, the side wall of the inner cylinder 9 is located in the gap between the outside of the piston 2 and the inside of the outer cylinder 1, the bottom of the outer cylinder 1 is connected to the back cover 6, a plurality of gas generating devices 7 connected to the bottom of the piston 2 are detachably connected on the surface of the back cover 6, and a perfluorohexanone fire extinguishing agent 8 is provided inside the inner cylinder 9.

[0024] Preferably, the front cover 3 and the inner cylinder 9 are an integral structure, and the inner cylinder 9 and the removable heat-insulating plate 5 are made of a heat-insulating material. The front cover 3 and the inner cylinder 9 are an integral structure, which is convenient for replacement. After the device is used for fire extinguishing, the inner cylinder 9 can be pulled out by directly pulling the front cover 3, which is easy to operate. Similarly, when installing, the inner cylinder 9 can also be installed in the corresponding position by pressing the front cover 3. In this embodiment, the inner cylinder 9 and the removable heat-insulating plate 5 are made of a heat-insulating material. The heat-insulating material can be a non-metallic material, such as plastic. This not only has good thermal insulation properties, but also can effectively prevent the problem of hydrolysis and corrosion of perfluorohexanone.

[0025] There are two ways to connect the removable heat-insulating plate 5 to the bottom of the inner tube 9:

[0026] Example 1: The bottom of the inner cylinder 9 is fixedly connected to the removable heat-insulating plate 5, which has a notch 5.1 on its outer edge. With this design, when the piston 2 presses against the removable heat-insulating plate 5, the removable heat-insulating plate 5 can be torn apart at the weak point of the notch 5.1, allowing it to be lifted up and separated from the bottom of the inner cylinder 9.

[0027] Example 2: The bottom of the inner cylinder 9 is fixedly connected to the removable heat-insulating plate 5, and the top outer edge of the piston 2 is a pointed structure. With this design, after the piston 2 presses against the removable heat-insulating plate 5, the pointed structure on the top outer edge of the piston 2 punctures the outer edge of the removable heat-insulating plate 5, allowing the removable heat-insulating plate 5 to rise up and separate from the bottom of the inner cylinder 9.

[0028] Preferably, the front cover 3 is threadedly connected to the top of the outer tube 1, and the rear cover 6 is threadedly connected to the bottom of the outer tube 1. With this design, the front cover 3 can be quickly installed and connected to the top of the outer tube 1 by threaded connection, and the detachable installation process of the rear cover 6 is also convenient.

[0029] Preferably, the piston 2 is a cylindrical structure with a closed top and an open bottom, and the outer edge of the rear cover 6 is provided with an annular mounting groove 6.1 that matches the bottom of the piston 2. The annular mounting groove 6.1 can position the piston 2 when it is installed on the surface of the rear cover 6, allowing for quick and accurate installation.

[0030] Preferably, a protective sticker is provided at the nozzle 4. The protective sticker can prevent moisture in the outside air from entering the perfluorohexanone fire extinguishing agent 8 along the nozzle 4 during normal storage and transportation of the fire extinguishing device, thereby avoiding the phenomenon of moisture absorption by the perfluorohexanone fire extinguishing agent 8.

[0031] Preferably, the gas generating device 7 includes a gas generating cylinder 7.1 detachably connected to the rear cover 6, with a gas generating agent 7.2 disposed within the gas generating cylinder 7.1. The gas generating agent 7.2 is connected to an electric ignition head 7.3 of the starting component. In this embodiment, the electric ignition head 7.3 is connected to a fire detection device, which is a temperature sensor and / or a smoke sensor. When a fire, overheating, or other condition occurs, the fire detection device detects the high temperature environment generated by the fire and sends a signal to the microprocessor. The microprocessor controls the power supply of the starting component, causing the electric ignition head 7.3 (with or without a bridge) to ignite, thereby igniting the gas generating agent 7.2.

[0032] Preferably, the electric ignition head 7.3 of the gas production device 7 is connected to a group of metal contacts through a wiring harness, and another group of metal contacts is provided on the surface of the rear cover 6 and is connected to the starting power supply through a starting wiring harness. In this way, when the gas production cylinder 7.1 is installed on the rear cover 6, the two groups of metal contacts are in contact with each other, so that the circuit where the electric ignition head 7.3 is located can be connected, realizing a rapid assembly process of the starting component circuit.

[0033] Preferably, the gas generating agent 7.2 is a powdered aerosol generating agent pressed into a pellet structure, and its outer surface is coated with a silicone layer 7.4. The silicone layer 7.4 can provide protection and thermal insulation for the pellet, preventing the surface temperature of the gas generating cylinder 7.1 from overheating due to the combustion of the gas generating agent 7.2.

[0034] Preferably, an ignition powder bag 7.5 is also provided on the periphery of the electric ignition head 7.3. The surface of the ignition powder bag 7.5 is fixedly connected to the inner wall of the silicone layer 7.4. The ignition powder bag 7.5 is filled with aerosol generating agent powder. The ignition powder bag 7.5 can achieve an energy amplification effect. After the electric ignition head 7.3 is in operation, the aerosol generating agent powder in the ignition powder bag 7.5 is first ignited, and then the heat generated by the combustion of the aerosol generating agent powder ignites the gas generating agent 7.2 below. Preferably, the ignition powder bag 7.5 in this embodiment can be made of a plastic film or a paper bag structure, which is flammable and has the effect of wrapping the aerosol generating agent powder.

[0035] The utility model discloses a fire extinguishing method of the perfluorohexanone fire extinguishing device, which comprises the following steps:

[0036] S1: When a fire occurs outside, the starting component ignites the gas generating agent 7.2 through the electric ignition head 7.3. The gas generating agent 7.2 burns to generate gas and enters the bottom of the piston 2;

[0037] S2: The gas generated by the gas generating agent 7.2 pushes the piston 2 to move toward the front cover 3;

[0038] S3: As the piston 2 moves toward the front cover 3, the perfluorohexanone fire extinguishing agent 8 is pressurized and ejected from the nozzle 4 to extinguish the fire.

[0039] S4. During the fire extinguishing process, the removable heat-insulating plate 5 remains on the top surface of the piston 2, isolating the heat generated by the combustion of the gas-generating agent 7.2 at the bottom of the piston 2. During this process, the removable heat-insulating plate 5 covering the surface of the piston 2 prevents the excessive heat generated by the gas-generating agent 7.2 after the fire extinguishing device is activated from reducing the fire extinguishing effectiveness of the perfluorohexanone fire extinguishing agent.

[0040] The utility model also discloses a method for replacing the fire extinguishing inner core of the perfluorohexanone fire extinguishing device, which comprises the following steps:

[0041] Step 1: After the perfluorohexanone fire extinguishing device is used in the fire extinguishing process, the original front cover 3, inner cylinder 9 and detachable heat insulation plate 5 are cleaned first, and then the piston 2 is re-inserted into the annular mounting groove 6.1 on the surface of the rear cover 6;

[0042] Step 2: Insert the new front cover 3 and the inner cylinder 9 filled with perfluorohexanone fire extinguishing agent 8 into the outer cylinder 1 (as shown in the figure). Figure 3 and 4 shown);

[0043] Step 3: During the insertion of the inner cylinder 9 into the outer cylinder 1, the inner cylinder 9 is aligned with the gap between the outer side of the piston 2 and the inner side of the outer cylinder 1 and inserted. When the removable heat-insulating plate 5 at the bottom of the inner cylinder 9 contacts the top of the piston 2, the removable heat-insulating plate 5 falls off under the action of the reaction force of the top of the piston 2 and moves upward as the piston 2 moves upward in the inner cylinder 9. The inner cylinder 9 stops when it contacts the surface of the rear cover 6.

[0044] Step 4: Install and connect the front cover 3 to the top of the outer tube 1, pour perfluorohexanone fire extinguishing agent 8 into the inner tube 9 through the nozzle 4, and then seal the nozzle 4 with a protective sticker.

[0045] Step 5: After removing the original gas generating device 7 from the rear cover 6, reinstall the new gas generating device 7, thus completing the entire process of replacing the fire extinguishing core (such as Figure 1 and 2 shown).

[0046] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A reusable perfluorohexanone fire extinguishing device, comprising an outer cylinder (1), wherein a piston (2) is arranged inside the outer cylinder (1), characterized in that: The top of the outer cylinder (1) is detachably connected to a front cover (3), a surface of the front cover (3) is provided with a nozzle (4), the bottom of the front cover (3) is fixedly connected to the top of the inner cylinder (9), the bottom of the inner cylinder (9) cooperates with a detachable heat insulation plate (5), the side wall of the inner cylinder (9) is located in the gap between the outside of the piston (2) and the inside of the outer cylinder (1), the bottom of the outer cylinder (1) is connected to a rear cover (6), a surface of the rear cover (6) is detachably connected to a plurality of gas generating devices (7) connected to the bottom of the piston (2), and a perfluorohexanone fire extinguishing agent (8) is provided inside the inner cylinder (9).

2. A reusable perfluorohexanone fire extinguishing device according to claim 1, characterized in that: The front cover (3) and the inner cylinder (9) are an integrated structure, and the inner cylinder (9) and the detachable heat-insulating plate (5) are made of heat-insulating material.

3. A reusable perfluorohexanone fire extinguishing device according to claim 1, characterized in that: The bottom of the inner cylinder (9) is fixedly connected to the detachable heat-insulating plate (5), and the outer edge of the detachable heat-insulating plate (5) is provided with a groove (5.1).

4. A reusable perfluorohexanone fire extinguishing device according to claim 1, characterized in that: The bottom of the inner cylinder (9) is fixedly connected to the detachable heat-insulating plate (5), and the outer edge of the top of the piston (2) is a pointed structure.

5. A reusable perfluorohexanone fire extinguishing device according to claim 1, characterized in that: The front cover (3) is threadedly connected to the top of the outer cylinder (1), and the rear cover (6) is threadedly connected to the bottom of the outer cylinder (1).

6. A reusable perfluorohexanone fire extinguishing device according to claim 1, characterized in that: The piston (2) is a cylindrical structure with a closed top and an open bottom, and an annular mounting groove (6.1) matching the bottom of the piston (2) is provided on the outer edge of the rear cover (6).

7. A reusable perfluorohexanone fire extinguishing device according to claim 1, characterized in that: A protective sticker is also provided at the position of the nozzle (4).

8. A reusable perfluorohexanone fire extinguishing device according to claim 1, characterized in that: The gas generating device (7) comprises a gas generating cylinder (7.1) detachably connected to the rear cover (6), a gas generating agent (7.2) being arranged in the gas generating cylinder (7.1), and the gas generating agent (7.2) being connected to an electric ignition head (7.3) of a starting component.

9. A reusable perfluorohexanone fire extinguishing device according to claim 8, characterized in that: The gas generating agent (7.2) is a drug column structure formed by pressing aerosol generating agent powder, and its outer surface is coated with a silica gel layer (7.4).

10. A reusable perfluorohexanone fire extinguishing device according to claim 9, characterized in that: An ignition powder bag (7.5) is also provided on the periphery of the electric ignition head (7.3); the surface of the ignition powder bag (7.5) is fixedly connected to the inner wall of the silica gel layer (7.4); and the ignition powder bag (7.5) is filled with aerosol generating agent powder.

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