A perfluorohexanone fire extinguishing device and method with replaceable extinguishing core.

Abstract

This invention discloses a perfluorohexanone fire extinguishing device and method with a replaceable extinguishing core, comprising an outer cylinder, a piston inside the outer cylinder, a front cover detachably connected to the top of the outer cylinder, a nozzle on the surface of the front cover, a bottom fixedly connected to the top of the inner cylinder, a detachable heat insulation plate at the bottom of the inner cylinder, the sidewall of the inner cylinder located in the gap between the outer side of the piston and the inner side of the outer cylinder, a rear cover connected to the bottom of the outer cylinder, and a gas-generating device communicating with the bottom of the piston on the surface of the rear cover, and perfluorohexanone extinguishing agent inside the inner cylinder; the device of this invention provides a simple and efficient process for replacing the extinguishing core, saving the cost of related materials; simultaneously, during the replacement process, the detachable heat insulation plate can be covered on the piston surface, thus isolating the heat generated by the combustion of the gas-generating agent at the bottom of the piston after the fire extinguishing device is activated, preventing the perfluorohexanone extinguishing agent from decomposing due to heat absorption and reducing its extinguishing effect.

Description

Technical Field

[0001] This invention relates to the field of perfluorohexanone fire extinguishing technology, and in particular to a perfluorohexanone fire extinguishing device and method with a replaceable fire extinguishing core. Background Technology

[0002] Non-pressurized perfluorohexanone fire extinguishing devices typically use aerosol generators as the propellant for the extinguishing agent. When the extinguishing device is activated, the electronic igniter generates energy to ignite the aerosol generator, which produces a large amount of gas that pushes the perfluorohexanone out of the extinguishing device.

[0003] Aerosol generators produce a large amount of gas, which is often accompanied by a huge amount of heat. Perfluorohexanone fire extinguishing agents will absorb heat and decompose when exposed to high temperatures. This will cause the perfluorohexanone fire extinguishing agent to undergo an endothermic reaction 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 in use are all single-use devices. After use, the fire extinguishing core cannot be replaced for reuse, which reduces the utilization rate of related components (such as the metal casing) and causes some waste. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a perfluorohexanone fire extinguishing device and method with a replaceable fire extinguishing core, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a perfluorohexanone fire extinguishing device with a replaceable fire extinguishing core, comprising an outer cylinder, a piston inside the outer cylinder, a front cover detachably connected to the top of the outer cylinder, a nozzle on the surface of the front cover, a bottom fixedly connected to the top of the inner cylinder, a detachable heat insulation plate at the bottom of the inner cylinder, the side wall of the inner cylinder 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 connected to a rear cover, a gas generating device communicating with the bottom of the piston on the surface of the rear cover, and perfluorohexanone fire extinguishing agent inside the inner cylinder.

[0007] Preferably, the front cover and the inner cylinder are an integral structure, and the inner cylinder and the detachable heat insulation plate are made of heat insulation material.

[0008] Preferably, the bottom of the inner cylinder is fixedly connected to the detachable heat insulation plate, and the outer edge of the detachable heat insulation plate is provided with grooves.

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

[0010] Preferably, the front cover is threaded to the top of the outer cylinder, and the rear cover is threaded to the bottom of the outer cylinder.

[0011] Preferably, the piston is a cylindrical structure that is closed at the top and open at the bottom, and the outer edge of the rear cover is provided with an annular mounting groove that matches the bottom of the piston.

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

[0013] Preferably, the gas generating device includes a gas generating cylinder detachably connected to the rear cover, the gas generating cylinder containing a gas generating agent, and the gas generating agent being connected to the electric ignition head of the starting component.

[0014] This invention discloses a method for extinguishing a fire using the aforementioned perfluorohexanone fire extinguishing device with a replaceable extinguishing core, comprising the following steps:

[0015] S1: When a fire occurs in the outside, the starting component ignites the gas-generating agent through the electric igniter. The gas-generating agent burns and produces gas, which enters below the piston.

[0016] S2: The gas generated by the gas-generating agent pushes the piston to move towards the front cover;

[0017] S3: As the piston moves forward towards the cover, the perfluorohexanone extinguishing agent is pressurized and sprayed out from the nozzle to extinguish the fire.

[0018] S4. During the fire extinguishing process, the detachable heat insulation plate is always located on the top surface of the piston, isolating the heat generated by the combustion of the gas-generating agent at the bottom of the piston.

[0019] This invention also discloses a method for replacing the fire extinguishing core of the above-mentioned perfluorohexanone fire extinguishing device with replaceable fire extinguishing core, which includes the following steps:

[0020] Step 1: After the perfluorohexanone fire extinguishing device with replaceable fire extinguishing core has been used in the fire extinguishing process, first clean off the original front cover, inner cylinder and detachable heat insulation plate, and then reinstall the piston into the annular mounting groove on the surface of the rear cover.

[0021] Step 2: Insert the new front cover and the inner cylinder filled with perfluorohexanone extinguishing agent into the outer cylinder;

[0022] Step 3: During the insertion of the inner cylinder into the outer cylinder, the inner cylinder is inserted into the gap between the outer side of the piston and the inner side of the outer cylinder. When the detachable heat insulation plate at the bottom of the inner cylinder contacts the top of the piston, the detachable heat insulation plate falls off under the action of the reaction force at the top of the piston and moves upward as the piston moves upward relative to the inner cylinder. The insertion stops when the inner cylinder contacts the surface of the back cover.

[0023] Step 4: Install and connect the front cover to the top of the outer cylinder, pour perfluorohexanone extinguishing agent into the inner cylinder through the nozzle, and then seal the nozzle with a protective sticker.

[0024] Step 5: After removing the original gas generating device from the back cover, reinstall the new gas generating device to complete the entire process of replacing the fire extinguishing core.

[0025] The beneficial effects of this invention are as follows: The process of replacing the fire extinguishing inner core of the device is simple and efficient, which can further improve the utilization rate of related components of the fire extinguishing device (such as the outer cylinder) and save the cost of related materials; at the same time, during the replacement process, a detachable heat insulation plate can be covered on the piston surface, so that after the fire extinguishing device is activated, the heat generated by the combustion of the gas-generating agent at the bottom of the piston can be isolated, and the perfluorohexanone fire extinguishing agent is prevented from reducing the fire extinguishing effect due to endothermic decomposition. Attached Figure Description

[0026] Figure 1 A schematic diagram of a perfluorohexanone fire extinguishing device with a replaceable fire extinguishing core after the fire extinguishing core has been replaced.

[0027] Figure 2 for Figure 1 An enlarged structural diagram of the area where the intermediate gas production unit is located;

[0028] Figure 3 A schematic diagram of the new fire extinguishing core before replacement;

[0029] Figure 4 for Figure 3 An enlarged structural diagram of the area where the detachable heat insulation plate is located. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1-4 As shown, a perfluorohexanone fire extinguishing device with a replaceable extinguishing core includes an outer cylinder 1, a piston 2 inside the outer cylinder 1, a front cover 3 detachably connected to the top of the outer cylinder 1, a nozzle 4 on the surface of the front cover 3, a bottom fixedly connected to the top of an inner cylinder 9, a bottom of the inner cylinder 9 engaging with a detachable heat insulation plate 5, the sidewall of the inner cylinder 9 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 connected to a rear cover 6, a gas generating device 7 communicating with the bottom of the piston 2 on the surface of the rear cover 6, and a perfluorohexanone extinguishing agent 8 inside the inner cylinder 9.

[0032] Preferably, the front cover 3 and the inner cylinder 9 are an integral structure, and the inner cylinder 9 and the detachable heat insulation plate 5 are made of heat insulation material. The integral structure of the front cover 3 and the inner cylinder 9 facilitates replacement. After the device has been used for fire extinguishing, the inner cylinder 9 can be pulled out by simply lifting the front cover 3, making the operation simple. Similarly, during installation, the inner cylinder 9 can be installed in the corresponding position by pressing the front cover 3. In this embodiment, the inner cylinder 9 and the detachable heat insulation plate 5 are made of heat insulation material, which can be a non-metallic material, such as plastic. This not only provides good thermal insulation but also effectively prevents the corrosion caused by the hydrolysis of perfluorohexanone.

[0033] There are two ways to connect the detachable heat insulation plate 5 to the bottom of the inner cylinder 9:

[0034] Example 1: The bottom of the inner cylinder 9 is fixedly connected to the detachable heat insulation plate 5, and the outer edge of the detachable heat insulation plate 5 is provided with a groove 5.1. With this design, after the piston 2 presses against the detachable heat insulation plate 5, the detachable heat insulation plate 5 can be torn open at its weak groove 5.1, so that it can be detached upward from the bottom of the inner cylinder 9.

[0035] Example 2: The bottom of the inner cylinder 9 is fixedly connected to the detachable heat insulation plate 5, and the outer edge of the piston 2 has a pointed structure. With this design, after the piston 2 presses against the detachable heat insulation plate 5, the pointed structure on the outer edge of the piston 2 can puncture the outer edge of the detachable heat insulation plate 5, thereby allowing the detachable heat insulation plate 5 to detach upward from the bottom of the inner cylinder 9.

[0036] Preferably, the front cover 3 is threaded to the top of the outer cylinder 1, and the rear cover 6 is threaded to the bottom of the outer cylinder 1. This design allows for quick installation of the front cover 3 to the top of the outer cylinder 1 via the threaded connection, and also facilitates the removable installation of the rear cover 6.

[0037] 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 has 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 during the installation process when it is installed onto the surface of the rear cover 6, enabling a quick and accurate installation process.

[0038] Preferably, a protective sticker is also provided at the nozzle 4. By providing a protective sticker, moisture in the outside air can be prevented from entering the perfluorohexanone extinguishing agent 8 along the nozzle 4 during normal storage and transportation of the fire extinguishing device, thus avoiding the phenomenon of perfluorohexanone extinguishing agent 8 absorbing moisture.

[0039] Preferably, the gas generating device 7 includes a gas generating cylinder 7.1 detachably connected to the rear cover 6. A gas generating agent 7.2 is disposed inside 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. 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 or overheating 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 to ignite the electric ignition head 7.3 (with or without a bridge), thereby igniting the gas generating agent 7.2. Preferably, the gas generating agent 7.2 can be an aerosol generating agent powder or a propellant column structure formed by pressing aerosol generating agent powder.

[0040] Preferably, the electric ignition head 7.3 of the gas generating device 7 is connected to a set of metal contacts via a wiring harness, while the surface of the rear cover 6 is provided with another set of metal contacts, which are connected to the starting power supply via a starting wiring harness. In this way, when the gas generating cylinder 7.1 is installed on the rear cover 6, the two sets of metal contacts come into contact with each other, thereby connecting the circuit where the electric ignition head 7.3 is located, realizing the rapid assembly process of the starting component circuit.

[0041] This invention discloses a method for extinguishing a fire using the aforementioned perfluorohexanone fire extinguishing device with a replaceable extinguishing core, comprising the following steps:

[0042] S1: When a fire occurs in the outside, the starting component ignites the gas-generating agent 7.2 through the electric igniter 7.3. The gas-generating agent 7.2 burns and produces gas, which enters below the piston 2.

[0043] S2: The gas generated by the gas-generating agent 7.2 pushes the piston 2 to move towards the front cover 3;

[0044] S3: As piston 2 moves forward to cover 3, perfluorohexanone extinguishing agent 8 is pressurized and sprayed out from nozzle 4 to extinguish the fire.

[0045] S4. During the fire extinguishing process, the detachable heat insulation plate 5 remains on the top surface of the piston 2, isolating it from 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 insulation plate 5 covers the surface of the piston 2, it prevents 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 extinguishing agent.

[0046] This invention also discloses a method for replacing the fire extinguishing core of the above-mentioned perfluorohexanone fire extinguishing device with replaceable fire extinguishing core, which includes the following steps:

[0047] Step 1: After the perfluorohexanone fire extinguishing device with replaceable fire extinguishing core has been used in the fire extinguishing process, first clean off the original front cover 3, inner cylinder 9 and detachable heat insulation plate 5, and then reinstall the piston 2 into the annular mounting groove 6.1 on the surface of the rear cover 6.

[0048] Step 2: Insert the new front cover 3 and the inner cylinder 9 filled with perfluorohexanone extinguishing agent 8 into the outer cylinder 1 (e.g., Figure 3 and 4 (as shown)

[0049] 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 detachable heat insulation plate 5 at the bottom of the inner cylinder 9 contacts the top of the piston 2, the detachable heat insulation plate 5 falls off under the action of the reaction force at the top of the piston 2, and moves upward as the piston 2 moves upward relative to the inner cylinder 9. The insertion of the inner cylinder 9 stops when it contacts the surface of the rear cover 6.

[0050] Step 4: Install and connect the front cover 3 to the top of the outer cylinder 1, pour perfluorohexanone extinguishing agent 8 into the inner cylinder 9 through the nozzle 4, and then seal the nozzle 4 with a protective sticker.

[0051] Step 5: After removing the original gas generating device 7 from the rear cover 6, reinstall the new gas generating device 7 to complete the entire process of replacing the fire extinguishing core (e.g., Figure 1 and 2 (As shown).

[0052] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A perfluorohexanone fire extinguishing device with a replaceable extinguishing core, comprising an outer cylinder (1), wherein a piston (2) is provided inside the outer cylinder (1), 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) is engaged 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), the surface of the rear cover (6) is provided with a gas generating device (7) communicating with the bottom of the piston (2). The inner cylinder (9) is filled with perfluorohexanone extinguishing agent (8). 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 detachable heat insulation plate (5) at the bottom of the inner cylinder (9) comes into contact with the top of the piston (2), the detachable heat insulation plate (5) falls off under the action of the reaction force at the top of the piston (2) and moves upward as the piston (2) moves upward relative to the inner cylinder (9).

2. A perfluorohexanone fire extinguishing device with a replaceable extinguishing core according to claim 1, characterized in that: The front cover (3) and the inner cylinder (9) are an integral structure, and the inner cylinder (9) and the detachable heat insulation plate (5) are made of heat insulation material.

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

4. A perfluorohexanone fire extinguishing device with a replaceable extinguishing core according to claim 1, characterized in that: The bottom of the inner cylinder (9) is fixedly connected to the detachable heat insulation 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 extinguishing core according to claim 1, characterized in that: The front cover (3) is threaded to the top of the outer cylinder (1), and the rear cover (6) is threaded to the bottom of the outer cylinder (1).

6. A perfluorohexanone fire extinguishing device with a replaceable extinguishing core according to claim 1, characterized in that: The piston (2) is a cylindrical structure with a closed top and an open bottom. 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).

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

8. A perfluorohexanone fire extinguishing device with a replaceable extinguishing core according to claim 1, characterized in that: The gas generating device (7) includes a gas generating cylinder (7.1) detachably connected to the rear cover (6), and a gas generating agent (7.2) is provided inside the gas generating cylinder (7.1). The gas generating agent (7.2) is connected to the electric ignition head (7.3) of the starting component.

9. A method for extinguishing a fire using a perfluorohexanone fire extinguishing device with a replaceable extinguishing core as described in any one of claims 1 to 8, characterized in that: It includes the following steps: S1: When a fire occurs in the outside, the starting component ignites the gas-generating agent (7.2) through the electric igniter (7.3). The gas-generating agent (7.2) burns and produces gas, which enters below the piston (2). S2: The gas generated by the gas-producing agent (7.2) pushes the piston (2) to move towards the front cover (3); S3: As the piston (2) moves forward onto the cover (3), the perfluorohexanone extinguishing agent (8) is pressurized and sprayed out from the nozzle (4) to carry out the extinguishing process; S4. During the fire extinguishing process, the detachable heat insulation 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).

10. A method for replacing the fire extinguishing core of a perfluorohexanone fire extinguishing device with a replaceable fire extinguishing core as described in any one of claims 1 to 8, characterized in that: It includes the following steps: Step 1: After the perfluorohexanone fire extinguishing device with replaceable fire extinguishing core is used in the fire extinguishing process, first clean off the original front cover (3), inner cylinder (9) and detachable heat insulation plate (5), and then reinstall the piston (2) into the annular mounting groove (6.1) on the surface of the rear cover (6); Step 2: Insert the new front cover (3) and the inner cylinder (9) filled with perfluorohexanone extinguishing agent (8) into the outer cylinder (1); Step 3: During the insertion of 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 detachable heat insulation plate (5) at the bottom of the inner cylinder (9) contacts the top of the piston (2), the detachable heat insulation plate (5) falls off under the action of the reaction force at the top of the piston (2) and moves upward as the piston (2) moves upward relative to the inner cylinder (9). The insertion of the inner cylinder (9) stops when it contacts the surface of the back cover (6). Step 4: Install and connect the front cover (3) to the top of the outer cylinder (1), pour perfluorohexanone extinguishing agent (8) into the inner cylinder (9) through the nozzle (4), and then seal the nozzle (4) with a protective sticker. Step 5: After removing the original gas generating device (7) from the back cover (6), reinstall the new gas generating device (7) to complete the entire process of replacing the fire extinguishing core.

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