Perfluorohexanone fire extinguishing device with replaceable fire extinguishing inner core

Abstract

The perfluorohexanone fire extinguishing device comprises an outer cylinder, a piston is arranged in the outer cylinder, a front cover is detachably connected to the top of the outer cylinder, a nozzle is formed in the surface of the front cover, 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 heat insulation disc capable of falling off. 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 perfluorohexanone fire extinguishing device with a replaceable fire extinguishing inner core. Background Art

[0002] Non-pressure storage 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 endothermically decompose when exposed to high temperature. This will cause the perfluorohexanone fire extinguishing agent to endothermically 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 single-use, and the fire extinguishing core cannot be replaced for reuse after being used to extinguish a fire, which reduces the utilization rate of related parts of the fire extinguishing device (such as the metal casing) and causes certain waste. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a perfluorohexanone fire extinguishing device with a replaceable fire extinguishing inner core 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: a perfluorohexanone fire extinguishing device with a replaceable fire extinguishing inner core, comprising an outer cylinder, a piston is arranged in the outer cylinder, a front cover is detachably connected to the top of the outer cylinder, a nozzle is arranged 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 insulation disk, the side wall of the inner cylinder is located in the gap between the outer side of the piston and the inner side of the outer cylinder, the bottom of the outer cylinder is connected to the rear cover, the surface of the rear cover is provided with a gas producing device connected to the bottom of the piston, and perfluorohexanone fire extinguishing agent is arranged inside the inner cylinder.

[0007] 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.

[0008] 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.

[0009] Preferably, the bottom of the inner cylinder is fixedly connected to the detachable heat-insulating disk, and the outer edge of the top of the piston is a pointed structure.

[0010] 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.

[0011] 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.

[0012] Preferably, a protective sticker is also provided at the nozzle position.

[0013] 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.

[0014] Beneficial effects of the utility model: the process of replacing the fire extinguishing inner core of the device of the utility model is simple and efficient, which can further improve the utilization rate of relevant parts of the fire extinguishing device (such as the outer cylinder) and save the cost of relevant materials; at the same time, during the replacement process, the detachable 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 reduction of the fire extinguishing effect due to the endothermic decomposition of the perfluorohexanone fire extinguishing agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a perfluorohexanone fire extinguishing device with a replaceable fire extinguishing core after the fire extinguishing core is replaced;

[0016] Figure 2 for Figure 1 An enlarged structural diagram of the area where the gas production device is located;

[0017] Figure 3 This is a schematic diagram of the structure of the new fire extinguishing core before replacement;

[0018] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of the area where the detachable insulation plate is located. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 1-4 As shown, a perfluorohexanone fire extinguishing device with a replaceable fire extinguishing inner core comprises an outer cylinder 1, a piston 2 is arranged inside the outer cylinder 1, a front cover 3 is detachably connected to the top of the outer cylinder 1, a nozzle 4 is arranged 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 insulation plate 5, the side wall of the inner cylinder 9 is located in the gap between the outer side of the piston 2 and the inner side of the outer cylinder 1, the bottom of the outer cylinder 1 is connected to the rear cover 6, a gas generating device 7 connected to the bottom of the piston 2 is arranged on the surface of the rear cover 6, and a perfluorohexanone fire extinguishing agent 8 is arranged inside the inner cylinder 9.

[0021] Preferably, 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 materials. The front cover 3 and the inner cylinder 9 are an integrated 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. When installing, the inner cylinder 9 can also be installed to the corresponding position by pressing the front cover 3. In this embodiment, the inner cylinder 9 and the detachable heat-insulating plate 5 are made of heat-insulating materials, and the heat-insulating materials can be non-metallic materials, such as plastics, which not only have better thermal insulation properties, but also can effectively prevent the problem of hydrolysis and corrosion of perfluorohexanone.

[0022] There are two ways to connect the removable heat-insulating plate 5 to the bottom of the inner tube 9:

[0023] Embodiment 1: The bottom of the inner cylinder 9 is fixedly connected to the removable heat-insulating plate 5, and a groove 5.1 is provided on the outer edge of the removable heat-insulating plate 5. With such a design, after the piston 2 presses against the removable heat-insulating plate 5, the removable heat-insulating plate 5 can be torn apart at the weak groove 5.1, thereby being able to be detached from the bottom of the inner cylinder 9 upwards.

[0024] Embodiment 2: The bottom of the inner cylinder 9 is fixedly connected to the removable heat-insulating plate 5, and the outer edge of the top of the piston 2 is a pointed structure. With this design, after the piston 2 presses against the removable heat-insulating plate 5, the outer edge of the removable heat-insulating plate 5 can be punctured by the pointed structure of the top outer edge of the piston 2, so that the removable heat-insulating plate 5 can be upwardly separated from the bottom of the inner cylinder 9.

[0025] 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.

[0026] 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 matching the bottom of the piston 2. The annular mounting groove 6.1 can position the piston 2 during the installation process when it is installed on the surface of the rear cover 6, so that it can be installed quickly and accurately.

[0027] Preferably, a protective sticker is also 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.

[0028] Preferably, 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 is arranged in the gas generating cylinder 7.1, and the gas generating agent 7.2 is connected to the electric ignition head 7.3 of the starting component. The electric ignition head 7.3 in this embodiment is connected to the 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 by the fire outside, and sends a signal to the microprocessor. The microprocessor controls the power supply of the starting component to ignite the electric ignition head 7.3 (with a bridge or without a bridge) to ignite the gas generating agent 7.2; preferably, the gas generating agent 7.2 can be selected from aerosol generating agent powder or a powder column structure formed by pressing the aerosol generating agent powder.

[0029] Preferably, the electric ignition head 7.3 of the gas producing 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 producing 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, thereby realizing a rapid assembly process of the starting component circuit.

[0030] The utility model discloses a fire extinguishing method of the above-mentioned perfluorohexanone fire extinguishing device, which comprises the following steps:

[0031] S1: When a fire occurs outside, the starting component ignites the gas generating agent 7.2 through the electric ignition head 7.3, and the gas generating agent 7.2 burns to generate gas and enters under the piston 2;

[0032] S2: The gas generated by the gas generating agent 7.2 pushes the piston 2 to move toward the front cover 3;

[0033] S3: When the piston 2 moves to the front cover 3, the perfluorohexanone fire extinguishing agent 8 is pressurized and ejected from the nozzle 4 to perform the fire extinguishing process;

[0034] S4. During the fire extinguishing process, the detachable heat-insulating plate 5 is always located on the top surface of the piston 2 to isolate the heat generated by the combustion of the gas generating agent 7.2 at the bottom of the piston 2. In this process, when the detachable heat-insulating plate 5 covers the surface of the piston 2, it can prevent the large amount of heat generated by the gas generating agent 7.2 after the fire extinguishing device is activated from reducing the fire extinguishing effect of the perfluorohexanone fire extinguishing agent.

[0035] 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:

[0036] 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;

[0037] 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 (such as Figure 3 and 4 shown);

[0038] Step 3: During the process of inserting the inner cylinder 9 into the outer cylinder 1, the inner cylinder 9 is inserted into the gap between the outer side of the piston 2 and the inner side of the outer cylinder 1. 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 relatively in the inner cylinder 9. The inner cylinder 9 stops when it contacts the surface of the rear cover 6.

[0039] Step 4: Install and connect the front cover 3 to the top of the outer tube 1, pour the perfluorohexanone fire extinguishing agent 8 into the inner tube 9 through the nozzle 4, and then seal the nozzle 4 with a protective sticker.

[0040] Step 5: After removing the original gas generating device 7 from the rear cover 6, reinstall the new gas generating device 7, thereby completing the entire process of replacing the fire extinguishing core (such as Figure 1 and 2 as shown).

[0041] 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. A perfluorohexanone fire extinguishing device with a replaceable fire extinguishing core, comprising an outer cylinder (1), wherein a piston (2) is arranged inside the outer cylinder (1), and characterized in that: The top of the outer cylinder (1) is detachably connected to a front cover (3), the 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 the rear cover (6), the surface of the rear cover (6) is provided with a gas generating device (7) connected to the bottom of the piston (2), and the inner cylinder (9) is provided with a perfluorohexanone fire extinguishing agent (8).

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

8. A perfluorohexanone fire extinguishing device with a replaceable fire extinguishing core 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.

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