Fire extinguisher charging device

Abstract

The utility model provides a kind of fire extinguisher filling device, device includes: drying device, drying device, valve machine, gas supply system, fire extinguishing agent conveying system, filling fixed platform and shaking device, drying device is used to dry fire extinguisher bottle body, drying device is used to dry after drying fire extinguisher bottle body, drying device is provided with operable glove;Filling fixed platform is used to fix fire extinguisher component, to realize the filling operation of fire extinguisher bottle body;Fire extinguishing agent conveying system is used to provide fire extinguishing agent to fill fire extinguisher bottle body, gas supply system is used to provide nitrogen to exclude air and moisture in fire extinguisher bottle body, simultaneously provide driving gas for fire extinguisher;Shaking device is used to shake after filling fire extinguisher component, so that nitrogen and fire extinguishing agent in fire extinguisher bottle body reach dissolution equilibrium state.The filling device provided by the utility model can make the performance of filled fire extinguisher stable.

Description

Technical Field

[0001] This utility model relates to the field of fire protection technology, and in particular to a fire extinguisher filling device. Background Technology

[0002] Fire extinguishers are crucial safety equipment for aircraft operations, directly impacting operational safety. Statistics show that fires account for approximately 20% of all aviation accidents, causing significant property damage and loss of life. To ensure fire safety within aircraft cabins, both the U.S. Federal Regulations (14 CFR) and Article 25.851(a) of the Civil Aviation Administration of China (CCAR) explicitly require the provision of compliant Halon 1211 fire extinguishers. However, due to the ozone-depleting properties of Halon 1211, and for environmental and health reasons, the United Nations adopted the Montreal Protocol on Substances that Deplete the Ozone Layer in September 1987, requiring the phase-out of Halon 1211 fire extinguishing agents starting in 1993. By 2010, countries worldwide had ceased the production and non-essential use of Halon 1211 fire extinguishing agents.

[0003] To meet the requirements of the Montreal Protocol, the International Civil Aviation Organization (ICAO) has developed a replacement program for the handheld fire extinguishers used on Halon 1211 aircraft. Currently, the fire extinguishing agent used in the handheld fire extinguishers of newly applying single-aircraft airworthiness certificates has been replaced with 2-BTP fire extinguishing agent. This agent has an ozone depletion potential (ODP) and global warming potential (GWP) close to zero, causing no atmospheric pollution. However, due to the unstable carbon-carbon double bonds in the 2-BTP molecule, it is susceptible to degradation by light, atmospheric -OH radicals, and oxygen, leading to a decrease in fire extinguishing effectiveness.

[0004] Chinese patent CN201910902085 discloses "a 2-bromo-3,3,3-trifluoropropylene filling device and filling method". The device includes a drive bottle, a pressure reducing valve, a dryer, a guide pipe and a 2-bromo-3,3,3-trifluoropropylene storage tank. It can complete the process of drying and vacuuming the fire extinguishing bottle, filling 2-bromo-3,3,3-trifluoropropylene and replenishing the drive gas. It can also discharge the air and moisture in the finished bottle and pipeline, reducing the impact of air and moisture on the 2-bromo-3,3,3-trifluoropropylene fire extinguishing agent. However, this technology still has the following shortcomings: (1) The effect of high temperature on the performance of the fire extinguishing agent: After the fire extinguishing bottle is dried by a heating system of 110℃~120℃, the fire extinguishing agent is filled. Since the bottle is at a high temperature, 2-BTP will gradually undergo dehalogenation to generate 2,3,3,3-trifluoropropyne at 110℃~120℃ after contacting the bottle. The chemical reaction formula is: This will lead to thermal decomposition of 2-BTP extinguishing agent and a decrease in extinguishing efficiency; (2) The effect of vacuuming on the performance of pressure gauges: Vacuuming process is used to vacuum the finished bottle before filling the extinguishing agent. Since the pressure gauge used in the fire extinguisher is a non-vacuum gauge, the pointer will point below the "0" mark (reverse deflection) after vacuuming. The pressure gauge will deform the elastic element under negative pressure, affecting the accuracy of the pressure gauge, thus making the reading of the fire extinguisher inaccurate, resulting in the product performance not meeting the requirements; (3) The effect of nitrogen dissolution on the performance of fire extinguishers: The solubility characteristics of nitrogen in 2-BTP extinguishing agent were not considered, and the fire extinguisher was not pressurized. As a result, the pressure dropped after the fire extinguisher was stored for a few days due to the dissolution of nitrogen and extinguishing agent, and the fire extinguisher could not meet the performance requirements. Therefore, it is necessary to improve the existing fire extinguisher filling scheme. Utility Model Content

[0005] To address the aforementioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a fire extinguisher filling device, which includes: a drying device, a valve loading machine, a gas supply system, a fire extinguishing agent delivery system, a filling platform, and a shaking device. The drying device is used to dry the fire extinguisher cylinder body, and the valve loading machine is used to further dry the pre-dried fire extinguisher cylinder body. An operable glove is provided on the drying device. After drying the fire extinguisher cylinder body, the operable glove is used to pre-assemble the fire extinguisher valve assembly onto the fire extinguisher cylinder body. The valve loading machine is used to pre-assemble the valve assembly onto the pre-dried fire extinguisher cylinder body. The valve assembly of the assembled fire extinguisher cylinder is tightened to obtain the fire extinguisher assembly; the filling and fixing platform is used to fix the fire extinguisher assembly to realize the filling operation of the fire extinguisher cylinder; the extinguishing agent delivery system is used to provide extinguishing agent to fill the fire extinguisher cylinder; the gas supply system is used to provide nitrogen to remove air and moisture from the fire extinguisher cylinder and to provide driving gas for the fire extinguisher; the shaking device is used to shake the filled fire extinguisher assembly so that the nitrogen and extinguishing agent in the fire extinguisher cylinder reach a state of dissolution equilibrium.

[0007] This utility model has at least the following beneficial effects:

[0008] The fire extinguisher filling device provided in this embodiment of the invention, with its orderly coordination of drying and drying devices, can thoroughly remove moisture and humidity from the fire extinguisher cylinder, reducing the risk of internal corrosion and decreased extinguishing agent performance due to moisture content in the air, and ensuring the cylinder is in a dry and clean state. The drying device is equipped with operable gloves, ensuring operator safety and allowing pre-assembly to be completed in a dry environment, preventing moisture contamination. The valve assembly machine precisely and efficiently assembles the pre-assembled cylinder, ensuring the valve is securely installed and well-sealed, guaranteeing the fire extinguisher's sealing and reliability from the source. Furthermore, the gas supply system and the extinguishing agent delivery system work synchronously and independently. The gas supply system rapidly provides nitrogen, effectively expelling air and moisture from the cylinder, creating an oxygen-free and moisture-free environment for filling; the extinguishing agent delivery system precisely delivers the extinguishing agent, and the collaboration between the two reduces the waiting time in the filling process. The filling and fixing platform securely holds the fire extinguisher components. Combined with the shaking and pressurizing devices, the fire extinguisher is quickly shaken and pressurized after filling, which promotes the rapid dissolution and equilibrium of nitrogen and extinguishing agent, ensuring the stable performance of the fire extinguisher after filling.

[0009] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A schematic diagram of the structure of the fire extinguisher filling device provided in this embodiment of the utility model. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0014] It should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processes, many of these steps can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the steps can be rearranged. A process can be terminated when its operation is complete, but it may also have additional steps not included in the figures. A process can correspond to a method, function, procedure, subroutine, subroutine, etc.

[0015] This utility model embodiment provides a fire extinguisher filling device, such as... Figure 1 As shown, the device includes: a drying device 1, a drying device 2, a valve loading machine 3, a gas supply system, a fire extinguishing agent delivery system, a filling and fixing platform 23, and a shaking device.

[0016] The drying device 1 is used to dry the fire extinguisher bottle body, and the drying device 2 is used to dry the dried fire extinguisher bottle body. The drying device is equipped with an operable glove (not shown). After drying the fire extinguisher bottle body, the operable glove is used to pre-assemble the fire extinguisher bottle body, that is, to put the valve assembly onto the fire extinguisher bottle body to prevent moisture from the air from entering the bottle body. The valve assembly machine 3 is used to tighten the valve assembly of the pre-assembled fire extinguisher bottle body to obtain a fire extinguisher assembly that meets the assembly requirements.

[0017] The filling and fixing platform 23 is used to fix the fire extinguisher assembly to realize the filling operation of the fire extinguisher cylinder. The filling platform 23 is equipped with a weighing device 24 and a fire extinguisher fixing platform 26. The weighing device can be a platform scale, and the fire extinguisher fixing platform 26 is equipped with a locking device (not shown) for locking the fire extinguisher cylinder.

[0018] In this embodiment of the invention, the extinguishing agent delivery system is used to provide extinguishing agent to fill the fire extinguisher cylinder, and the gas supply system is used to provide nitrogen to remove air and moisture from the fire extinguisher cylinder and to provide driving gas for the fire extinguisher.

[0019] Furthermore, such as Figure 1As shown, the gas supply system includes a first nitrogen cylinder 4, a first valve 8, a first pipeline, a nitrogen control valve 20, a nitrogen pressure relief valve 21, a nitrogen pipeline 22, and a pressure relief pipeline. The first nitrogen cylinder 4 is connected to the nitrogen pipeline 22 through the first pipeline. The first valve 8 is located on the first pipeline, and the nitrogen control valve 20 is located on the nitrogen pipeline 22. The pressure relief pipeline is connected to the nitrogen pipeline 22, and the nitrogen pressure relief valve 21 is located on the pressure relief pipeline.

[0020] In this embodiment of the invention, the shaking device is used to shake the filled fire extinguisher assembly so that the nitrogen and extinguishing agent in the fire extinguisher cylinder reach a state of dissolution equilibrium.

[0021] Furthermore, such as Figure 1 As shown, the extinguishing agent delivery system includes a second nitrogen cylinder 5, a first pipeline, a buffer tank 6, a third pipeline, an extinguishing agent container 7, a second valve 9, a fourth pipeline, a first extinguishing agent control valve 17, an extinguishing agent pipeline, a second extinguishing agent control valve 19, and a pump body (not shown). The second nitrogen cylinder 5 is connected to the buffer tank 6 via the second pipeline. The second valve 9 is located on the second pipeline. The buffer tank 6 and the extinguishing agent container 7 are connected via the third pipeline. The extinguishing agent container 7 and the extinguishing agent pipeline 22 are connected via the fourth pipeline. The pump body is located between the fourth pipeline and the extinguishing agent pipeline. The first extinguishing agent control valve 17 and the second extinguishing agent control valve 19 are located on the extinguishing agent pipeline.

[0022] In this embodiment of the invention, the extinguishing agent in the extinguishing agent tank 7 is 2-bromo-3,3,3-trifluoropropylene. Pressure-resistant metal hoses are provided at the ends of the extinguishing agent pipeline 18 and the nitrogen pipeline 22 to facilitate the connection of the extinguishing agent and nitrogen filling and to mitigate shaking during nitrogen pressurization. The nitrogen purity in the first and second nitrogen cylinders is greater than or equal to 99.999%, and the water content is less than or equal to 3 ppm. The outlet pressure of the second valve is 0.01 MPa. The outlet pressure of the second valve can be determined based on the performance of the fire extinguisher being filled; in one illustrative embodiment, it can be 0.8 MPa or 1.0 MPa.

[0023] Furthermore, it also includes an operating console 11. The operating console 11 is equipped with a PLC operating interface (not shown), a fire extinguishing agent control valve button 12, a nitrogen control valve button 13, a liquid pressure gauge 14, a gas pressure gauge 15, and a nitrogen pressure relief valve button 16. The fire extinguishing agent control valve button 12 controls the first fire extinguishing agent control valve 17, the nitrogen control valve button 13 controls the nitrogen control valve 20, and the nitrogen pressure relief valve button 16 controls the nitrogen pressure relief valve 21. The liquid pressure gauge is used to monitor the pressure of the fire extinguishing agent pipeline during the filling process, and the gas pressure gauge is used to monitor the pressure of the nitrogen pipeline during the filling process.

[0024] Furthermore, the buffer tank 6 is equipped with a pressure relief valve 10 with a pressure relief pressure of 0.1 MPa to prevent overpressure inside the tank.

[0025] Furthermore, the shaking device includes a fixed platform 28 and a track shaking table 27. The track shaking table 27 is placed on the fixed platform 28, and the track shaking table is provided with a locking device (not shown) for locking the fire extinguisher bottle.

[0026] The fire extinguisher filling device provided in this embodiment of the invention, with its orderly coordination of drying and drying devices, can thoroughly remove moisture and humidity from the fire extinguisher cylinder, reducing the risk of internal corrosion and decreased extinguishing agent performance due to moisture content in the air, and ensuring the cylinder is in a dry and clean state. The drying device is equipped with operable gloves, ensuring operator safety and allowing pre-assembly to be completed in a dry environment, preventing moisture contamination. The valve assembly machine precisely and efficiently assembles the pre-assembled cylinder, ensuring the valve is securely installed and well-sealed, guaranteeing the fire extinguisher's sealing and reliability from the source. Furthermore, the gas supply system and the extinguishing agent delivery system work synchronously and independently. The gas supply system rapidly provides nitrogen, effectively expelling air and moisture from the cylinder, creating an oxygen-free and moisture-free environment for filling; the extinguishing agent delivery system precisely delivers the extinguishing agent, and the collaboration between the two reduces the waiting time in the filling process. The filling and fixing platform securely holds the fire extinguisher components. Combined with the shaking and pressurizing devices, the fire extinguisher is quickly shaken and pressurized after filling, which promotes the rapid dissolution and equilibrium of nitrogen and extinguishing agent, ensuring that the performance of the fire extinguisher is more stable after filling.

[0027] The working principle of the fire extinguisher filling device provided in this embodiment of the utility model includes:

[0028] S100 involves sequentially drying the fire extinguisher cylinder; the drying temperature is 60℃~70℃.

[0029] In this embodiment of the invention, a drying device is used to dry the fire extinguisher bottle, and a desiccant is also used to dry the fire extinguisher bottle. During drying, the humidity inside the drying device is less than 5% RH, and the drying time is 1.5 to 2 hours. Alternatively, the drying time can exceed 12 hours.

[0030] In this embodiment of the invention, since the drying temperature is 60℃~70℃, the extinguishing agent will not undergo thermal decomposition due to the generation of 2,3,3,3-trifluoropropyne during contact between the extinguishing agent and the bottle.

[0031] S200: Using an operable glove, the fire extinguisher valve assembly is pre-assembled onto the fire extinguisher cylinder. The pre-assembled fire extinguisher cylinder is placed on the valve assembly machine to tighten the valve assembly on the fire extinguisher cylinder, thus obtaining the fire extinguisher assembly. The fire extinguisher assembly is then fixed on the filling table.

[0032] The S300 uses a gas supply system to purge nitrogen pipelines and replace nitrogen in fire extinguisher assemblies fixed on a filling platform.

[0033] The S400 uses the extinguishing agent delivery system to clean the extinguishing agent pipelines and refill the fire extinguisher components.

[0034] The S500 shakes and pressurizes the filled fire extinguisher components to complete the filling process.

[0035] Furthermore, the S300 specifically includes:

[0036] S310, Set the outlet pressure of the second valve to the first set pressure and open the second valve to fill the buffer tank with nitrogen; Set the outlet pressure of the first valve to the second set pressure and open the first valve.

[0037] In this embodiment of the invention, the first set pressure is 0.01 MPa, and the second set pressure is 0.8 MPa or 1.0 MPa.

[0038] S320, press the nitrogen control valve button to open the nitrogen control valve and purge the nitrogen pipeline with nitrogen from the first nitrogen cylinder; after purging, connect the nitrogen pipeline to the valve of the fire extinguisher assembly fixed on the filling platform via a quick connector, and execute S330.

[0039] S330: Input the nitrogen pressure as the second set pressure on the PLC operation interface, open the fire extinguisher valve, press the nitrogen control valve button to open the nitrogen control valve to fill the fire extinguisher cylinder with nitrogen, and then open the nitrogen pressure relief valve to discharge the gas in the cylinder. Repeat this step a set number of times, such as 5 times, to complete the nitrogen replacement.

[0040] Furthermore, the S400 specifically includes:

[0041] S410, open the second extinguishing agent control valve, press the extinguishing agent control valve button to open the first extinguishing agent control valve, and start the pump to draw a set amount of extinguishing agent from the extinguishing agent tank to clean the extinguishing agent pipeline, and close the first extinguishing agent control valve, the pump and the second extinguishing agent control valve after cleaning.

[0042] In this embodiment of the invention, nitrogen gas is introduced from the buffer tank into the extinguishing agent tank, which ensures that the pump body can smoothly extract the extinguishing agent.

[0043] In this embodiment of the invention, the set amount can be set according to actual needs. In one illustrative embodiment, the set amount can be 500ml. Specifically, when cleaning the extinguishing agent pipeline, a meter can be connected to the end of the extinguishing agent pipeline to receive the extinguishing agent discharged from the fire extinguisher pipeline. When the extinguishing agent content in the meter reaches the set amount, the cleaning is complete.

[0044] S420: Connect the extinguishing agent pipeline to the valve of the fire extinguisher assembly via a quick connector; input the extinguishing agent filling amount as the set filling amount on the PLC operation interface; place the fire extinguisher assembly on the filling platform and lock it; set the weighing device to the initial state.

[0045] In this embodiment of the invention, the filling amount can be determined based on the capacity of the fire extinguisher bottle, for example, 0.9kg, 1.0kg, 1.1kg, 1.6kg, 1.7kg, etc.

[0046] S430: Open the fire extinguisher valve, press the extinguishing agent control valve button to open the first extinguishing agent control valve, and start the pump to fill the fire extinguisher cylinder with extinguishing agent. When the amount of extinguishing agent in the fire extinguisher cylinder is the set filling amount, stop the extinguishing agent filling operation and close the fire extinguisher valve.

[0047] During the filling process of the extinguishing agent, the pump will automatically stop working when the set filling amount is reached. At this time, close the fire extinguisher valve and the second extinguishing agent control valve, remove the fire extinguisher cylinder and check its weight on the weighing device. If the extinguishing agent is underfilled, add more; if it is overfilled, press the fire extinguisher valve to discharge the excess extinguishing agent into the waste liquid tank until the extinguishing agent filling amount reaches the required range. Then, place the fire extinguisher back on the fire extinguisher mounting platform and lock it.

[0048] S440: Connect the nitrogen pipeline to the valve of the fire extinguisher assembly fixed on the filling platform via a quick connector. Input the filling pressure as the second set pressure on the PLC operation interface. Open the fire extinguisher valve and the nitrogen control valve in sequence to perform nitrogen filling operation on the fire extinguishing agent cylinder. When the pressure in the fire extinguisher cylinder reaches the second set pressure, stop the nitrogen filling operation, close the fire extinguisher valve and open the nitrogen pressure relief valve to depressurize the nitrogen pipeline. After depressurization, transfer the fire extinguisher assembly to the shaking device (specifically, a track shaking table) and lock it.

[0049] Furthermore, the S500 specifically includes:

[0050] S510: Control the shaking device to shake at a set shaking rate for a set time, that is, control the track shaking table to shake at a set shaking rate for a set time; if the pointer reading of the pressure gauge on the fire extinguisher assembly is the same as the second set pressure, complete the fire extinguisher filling operation; otherwise, execute S520.

[0051] S520: Open the nitrogen control valve to pressurize the extinguishing agent cylinder. When the pressure inside the extinguishing agent cylinder reaches the second set pressure, close the nitrogen control valve and execute S510.

[0052] In this embodiment of the invention, the set shaking rate is 400~450 rpm / min, and the set time is 30 seconds.

[0053] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this utility model can be achieved, and no limitation is imposed herein.

[0054] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fire extinguisher filling device, characterized in that, The apparatus includes: a drying device, a valve loading machine, a gas supply system, a fire extinguishing agent delivery system, a filling and fixing platform, and a shaking device. The drying device is used to dry the fire extinguisher cylinder, and the valve loading machine is used to further dry the pre-dried fire extinguisher cylinder. The drying device is equipped with an operable glove. After drying the fire extinguisher cylinder, the operable glove is used to pre-assemble the fire extinguisher valve assembly onto the cylinder. The valve loading machine is used to tighten the pre-assembled valve assembly to obtain the fire extinguisher assembly. The filling and fixing platform is used to fix the fire extinguisher assembly to achieve the filling operation of the fire extinguisher cylinder. The fire extinguishing agent delivery system is used to provide fire extinguishing agent to fill the fire extinguisher cylinder. The gas supply system is used to provide nitrogen to remove air and moisture from the fire extinguisher cylinder and to provide the driving gas for the fire extinguisher. The shaking device is used to shake the filled fire extinguisher assembly to achieve a dissolution equilibrium between the nitrogen and fire extinguishing agent in the fire extinguisher cylinder.

2. The fire extinguisher filling device according to claim 1, characterized in that, It also includes an operating console; the operating console is equipped with a PLC operating interface, a fire extinguishing agent control valve button, a nitrogen control valve button, a liquid pressure gauge, a gas pressure gauge, and a nitrogen pressure relief valve button.

3. The fire extinguisher filling device according to claim 2, characterized in that, The gas supply system includes a first nitrogen cylinder, a first valve, a first pipeline, a nitrogen control valve, a nitrogen pressure relief valve, a nitrogen pipeline, and a pressure relief pipeline. The first nitrogen cylinder is connected to the nitrogen pipeline through the first pipeline. The first valve is located on the first pipeline. The nitrogen control valve is located on the nitrogen pipeline. The pressure relief pipeline is connected to the nitrogen pipeline. The nitrogen pressure relief valve is located on the pressure relief pipeline. The extinguishing agent delivery system includes a second nitrogen cylinder, a first pipeline, a buffer tank, a third pipeline, an extinguishing agent container, a second valve, a fourth pipeline, a first extinguishing agent control valve, an extinguishing agent pipeline, a second extinguishing agent control valve, and a pump body. The second nitrogen cylinder is connected to the buffer tank via the second pipeline. The second valve is located on the second pipeline. The buffer tank and the extinguishing agent container are connected via the third pipeline. The extinguishing agent container and the extinguishing agent pipeline are connected via the fourth pipeline. The pump body is located between the fourth pipeline and the extinguishing agent pipeline. The first extinguishing agent control valve and the second extinguishing agent control valve are located on the extinguishing agent pipeline. The extinguishing agent control valve button is used to control the first extinguishing agent control valve, the nitrogen control valve button is used to control the nitrogen control valve, and the nitrogen pressure relief valve button is used to control the nitrogen pressure relief valve.

4. The fire extinguisher filling device according to claim 3, characterized in that, The buffer tank is equipped with a pressure relief valve.

5. The fire extinguisher filling device according to claim 1, characterized in that, The shaking device includes a fixed platform and a track-mounted shaking table.

6. The fire extinguisher filling device according to claim 1, characterized in that, The filling platform is equipped with a weighing device and a fire extinguisher fixing platform.

7. The fire extinguisher filling device according to claim 1, characterized in that, The extinguishing agent in the extinguishing agent container is 2-bromo-3,3,3-trifluoropropylene.

8. The fire extinguisher filling device according to claim 1, characterized in that, Pressure-resistant metal hoses are installed at the ends of the extinguishing agent pipeline and the nitrogen pipeline.

Images