Fire extinguishing system

By setting up fire cabinets and isolation chambers in the home environment and equipped with detection and fire extinguishing mechanisms, the risk of fire caused by thermal outage of aging lithium battery equipment is solved, effective monitoring and fire extinguishing of electronic equipment is achieved, and relevant personnel are notified in a timely manner to ensure the family Safety.

CN119406006AInactive Publication Date: 2025-02-11楼兰
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Patent Information

Application Number
CN202411400630.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-09
Publication Date
2025-02-11
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Aging lithium battery equipment may cause fires or explosions when thermally out of control, causing the fire to spread and pose a threat to home security, and the prior art does not adopt effective management methods to prevent such accidents.

Method used

A fire-fighting and fire-fighting system was designed, by setting up a separate fire-fighting cabinet at home as storage equipment for electronic equipment, and an isolation chamber, a testing mechanism and a fire-fighting mechanism are installed in the fire-fighting cabinet. The detection mechanism monitors the situation in the isolation chamber through cameras and temperature sensors. If a fire is found, the fire extinguishing mechanism will be activated to extinguish the fire and sends fire information to the server and fire end.

Benefits of technology

After the electronic equipment catches fire, the isolation chamber isolates it from other items to reduce fire losses; monitoring and fire extinguishing mechanisms can effectively suppress and eliminate fire conditions; send fire information in a timely manner to ensure that relevant personnel understand and deal with the fire as soon as possible.

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Abstract

The invention provides a fire extinguishing system, and relates to the technical field of fire extinguishing, the fire extinguishing system comprises a fire-fighting cabinet, and a detection mechanism and a fire extinguishing mechanism arranged in the fire-fighting cabinet, the detection mechanism is suitable for collecting data in an isolation cabin for monitoring, when a fire occurs in the isolation cabin, the fire extinguishing mechanism is controlled to control the fire in the isolation cabin, and the fire extinguishing mechanism is controlled to extinguish the fire. The detection mechanism is in communication connection with a server, a client and a fire-fighting end, when the detection mechanism monitors that a fire occurs, fire information is sent to the server, and the server distributes the fire information to the client and the fire-fighting end. Therefore, property loss caused by fire disasters due to thermal runaway of the lithium battery is avoided.
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Description

Technical Field

[0001] The present invention relates to the technical field of fire fighting and extinguishing, and in particular to a fire fighting and extinguishing system. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, household electronic devices are becoming more and more popular. Most of these devices use lithium batteries as power sources. Lithium batteries have an important position in the field of portable devices due to their high energy density, long life and light weight. However, as the use time increases, lithium batteries will gradually age and pose potential safety hazards. Especially when these devices are improperly used or managed, they are very likely to cause fire accidents.

[0003] When an aged lithium battery device experiences thermal runaway, a large amount of heat and gas is generated inside the battery. This heat and gas quickly accumulate in a limited space, causing the battery temperature to rise sharply, which in turn triggers a chain reaction such as electrolyte decomposition and diaphragm rupture. These reactions will further increase the temperature and pressure inside the battery, and may eventually cause the battery to explode or catch fire. Once the fire spreads to the surrounding combustibles, it will quickly form a fire, posing a serious threat to family safety.

[0004] However, currently there is no regulation in place for most home electronic devices, which increases the risk of fire. Summary of the invention

[0005] The embodiment of the present invention provides a fire extinguishing system, which manages the electronic equipment by providing a separate fire cabinet as a storage device for household electronic equipment, thereby avoiding fires caused by thermal runaway of lithium batteries and causing property losses.

[0006] In view of the above problems, the technical solution proposed by the present invention is:

[0007] A fire extinguishing system, comprising:

[0008] A fire extinguisher cabinet, comprising a cabinet body and a cabinet door hinged to the front thereof, at least one isolation chamber being arranged in the cavity a of the fire extinguisher cabinet, the top of the cabinet body being provided with a smoke exhaust nozzle communicating with the interior thereof, and the top of the isolation chamber being provided with a smoke exhaust port communicating with the smoke exhaust nozzle;

[0009] The fire cabinet is also provided with a detection mechanism and a fire extinguishing mechanism;

[0010] The detection mechanism is suitable for collecting data inside the isolation chamber for monitoring, and when a fire occurs inside the isolation chamber, the fire extinguishing mechanism is controlled to control the fire inside the isolation chamber;

[0011] The detection mechanism is communicatively connected with a server, a client and a fire-fighting terminal. When the detection mechanism detects a fire, the detection mechanism sends fire information to the server, and the server distributes the fire information to the client and the fire-fighting terminal.

[0012] The cabinet door is used to close the fire cabinet to isolate the compartment.

[0013] In order to better implement the technical solution of the present invention, the following technical measures are also adopted.

[0014] Furthermore, a flame retardant heat insulation board is provided between two adjacent isolation chambers.

[0015] Furthermore, the fire extinguishing mechanism is arranged in the cavity b of the fire cabinet, including an extruder and a fire extinguishing agent bag arranged inside the extruder, wherein spray pipes are provided on both sides of the inner top wall of the isolation chamber, and the fire extinguishing agent bag is connected to the spray pipe through a spring tube.

[0016] Furthermore, the extruder includes a clamping plate a and a clamping plate b, a screw rod is provided between the clamping plate a and the clamping plate b, the screw rod passes through the clamping plate a and is threadedly connected to the clamping plate b, a driving motor is provided on the clamping plate a, and the output shaft of the driving motor is axially connected to the screw rod.

[0017] Furthermore, the detection mechanism includes a detector, which is arranged on the top wall of the isolation chamber, including a camera and a temperature sensor, the camera is used to collect image data inside the isolation chamber, and the temperature sensor is used to collect temperature data inside the isolation chamber.

[0018] Furthermore, the detection mechanism also includes a controller and a data transceiver communicatively connected thereto, the controller is communicatively connected to the drive motor, the camera, and the temperature sensor respectively, and the data transceiver is communicatively connected to the server.

[0019] Furthermore, the bottom of the fire cabinet is provided with a plurality of supporting feet.

[0020] Furthermore, the supporting legs are made of heat insulating material.

[0021] Furthermore, a connecting nozzle is provided on the clamping plate b, and the output end of the fire extinguishing agent bag is detachably connected to the connecting nozzle, and the connecting nozzle is communicated with the spring tube.

[0022] Furthermore, the bottom of the fire cabinet is detachably provided with a bottom cover plate for closing or opening the cavity b.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. After an electronic device catches fire, a separate isolation compartment can be used to isolate it from other items, thus reducing the losses caused by the fire.

[0025] 2. Monitor the electronic equipment in the separately set up isolation chamber. When a fire occurs, activate the fire extinguishing mechanism to extinguish the fire, suppress and eliminate the fire.

[0026] 3. When the detection agency detects a fire, it can send fire information to the client and the fire department, so that relevant personnel can be notified immediately after the fire occurs.

[0027] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of a fire extinguishing system disclosed in an embodiment of the present invention;

[0029] Figure 2 It is a structural schematic diagram of a fire extinguisher cabinet disclosed in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the fire extinguisher cabinet disclosed in an embodiment of the present invention after the cabinet door is opened;

[0031] Figure 4 for Figure 3 Schematic diagram of the local structure in;

[0032] Figure 5 A schematic diagram of the bottom structure of a fire extinguisher cabinet disclosed in an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of a fire extinguishing mechanism disclosed in an embodiment of the present invention.

[0034] Figure numerals: 1. fire cabinet; 11. cabinet body; 111. cavity a; 112. cavity b; 12. cabinet door; 13. bottom cover; 14. isolation compartment; 141. smoke exhaust port; 15. flame retardant insulation board; 16. smoke exhaust nozzle; 17. smoke exhaust pipe; 18. fire extinguishing mechanism; 181. extruder; 1811. splint a; 1812. splint b; 1813. screw rod; 1814. drive motor; 1815. connecting nozzle; 1816. spring tube; 182. spray pipe; 183. fire extinguishing agent bag; 19. detection mechanism; 191. detector; 1911. camera; 1912. temperature sensor; 192. controller; 192. data transceiver; 20. support foot; 2. server; 3. client; 4. fire terminal. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the home environment, the number of electronic devices with lithium batteries is increasing. Since most users do not have enough knowledge about the safe use of these devices, there are many improper uses, such as placing lithium battery devices near flammable materials. At the same time, some old devices may have serious aging lithium batteries due to poor maintenance or lack of regular inspections, but users often fail to discover and replace them in time, thereby increasing the risk of fire. Generally speaking, it is difficult for users to discard some old electronic devices with lithium batteries. Therefore, a considerable number of old electronic devices with lithium batteries will remain in the home environment, which undoubtedly increases the risk of home fires.

[0037] In order to avoid fires caused by old electronic devices with lithium batteries, the present invention adopts the following solution:

[0038] exist Figure 1 The structure diagram of the fire extinguishing system is shown in FIG. 1 , which includes four parts:

[0039] 1. Fire cabinet 1; 2. Server 2; 3. Client 3; 4. Fire terminal 4.

[0040] like Figure 2 As shown, the fire cabinet 1 is arranged in a home environment, wherein the fire cabinet 1 comprises a cabinet body 11 and a cabinet door 12 hinged to the front thereof, at least one isolation chamber 14 is arranged in the cavity a111 of the fire cabinet 1, the top of the cabinet body 11 is provided with a smoke exhaust nozzle 16 communicated with the interior thereof, and the top of the isolation chamber 14 is provided with a smoke exhaust port 141 communicated with the smoke exhaust nozzle 16.

[0041] Therefore, the fire cabinet 1 has multiple installation modes:

[0042] 1. Install the fire cabinet 1 near a window or outdoors, install a smoke exhaust pipe 17 on the smoke exhaust nozzle 16, and extend the smoke exhaust pipe 17 to the external environment. After an old electronic device with a lithium battery catches fire, smoke can enter the smoke exhaust pipe 17 through the smoke exhaust port 141 of the isolation chamber 14 and be output to the external environment by the smoke exhaust pipe 17.

[0043] Second: install the fire cabinet 1 at a position close to the exhaust passage, such as a flue, install a smoke exhaust pipe 17 on the smoke exhaust nozzle 16, and connect the smoke exhaust pipe 17 with the exhaust passage. After the old electronic equipment with lithium batteries catches fire, the smoke can enter the smoke exhaust pipe 17 through the smoke exhaust port 141 of the isolation chamber 14 and be output to the exhaust passage by the smoke exhaust pipe 17.

[0044] like Figure 1 As shown, the client 3 and the fire terminal 4 are used to receive the fire information distributed by the server 2. The user receives the fire information through the client 3, and the firefighters receive the fire information through the fire terminal 4. The client 3 and the fire terminal 4 can be any device such as a computer, a mobile phone, etc.

[0045] The server 2 can also choose whether to distribute the fire information to the fire terminal 4 according to the fire situation.

[0046] Specifically, the server 2 receives the data captured by the detector 191 (camera 1911 and temperature sensor 1912) in real time. After the controller 192 starts the fire extinguishing mechanism 18, the server 2 analyzes the captured image data and temperature data. Based on the recognition of image features and the combination of temperature data, it is determined that the fire has disappeared after the fire extinguishing mechanism 18 is started. At this time, the server 2 does not send the fire information to the fire end 4 to notify the firefighters. If after the controller 192 starts the fire extinguishing mechanism 18, the server 2 analyzes the captured image data and temperature data. Based on the recognition of image features and the combination of temperature data, it is determined that the fire has not disappeared after the fire extinguishing mechanism 18 is started, and it is predicted that there is a trend of weakening. At this time, the server 2 does not send the fire information to the fire end 4 to notify the firefighters. After the controller 192 starts the fire extinguishing mechanism 18, the server 2 analyzes the captured image data and temperature data. Based on the recognition of image features and the combination of temperature data, it is determined that the fire has not disappeared after the fire extinguishing mechanism 18 is started, and it is predicted that there is a trend of increasing. At this time, the server 2 sends the fire information to the fire end 4 to notify the firefighters.

[0047] like Figure 3 and 4 As shown, a detector 191 is provided on the top wall of the isolation chamber 14 , and the detector 191 includes a camera 1911 and a temperature sensor 1912 .

[0048] in,

[0049] Camera 1911 is used to collect image data inside the isolation chamber 14.

[0050] The temperature sensor 1912 is used to collect temperature data inside the isolation chamber 14.

[0051] A controller 192 and a data transceiver 192 in communication with the fire cabinet 1 are also provided. The controller 192 and the data transceiver 192 are arranged in the cavity b112 of the fire cabinet 1. The controller 192 is suitable for obtaining the image data inside the isolation chamber 14 collected by the camera 1911 and the temperature data inside the isolation chamber 14 collected by the temperature sensor 1912, and is also used to upload the collected image temperature data to the server 2. The image data collected by the camera 1911 and the temperature data collected by the temperature sensor 1912 are transmitted to the controller 192. When the temperature exceeds the set temperature threshold, the controller 192 triggers the fire response operation, which triggers the following operations:

[0052] 1. Generate fire information, including: an image of the interior of the isolation chamber 14 , the temperature of the interior of the isolation chamber 14 , and the position of the isolation chamber 14 .

[0053] 2. Start the fire extinguishing mechanism and control the fire extinguishing mechanism 18 to start and control the fire inside the isolation chamber 14.

[0054] like Figure 1 , 5 As shown in FIG. 6 , the fire extinguishing mechanism 18 includes an extruder 181 and a fire extinguishing agent bag 183 arranged inside the extruder 181 , wherein a spray pipe 182 is provided on both sides of the inner top wall of the isolation chamber 14 , and the fire extinguishing agent bag 183 is connected to the spray pipe 182 through a spring tube 1816 .

[0055] The fire extinguishing agent bag 183 is filled with a water-based fire extinguishing agent or water. The fire extinguishing agent bag 183 is squeezed by the squeezer 181, and the fire extinguishing agent inside is transported to the sprinkler pipe 182 through the spring tube 1816 and sprayed into the burning isolation chamber 14 to achieve the effect of extinguishing the fire.

[0056] It should be noted that when more than one isolation chamber 14 is used, it is also necessary to set a solenoid valve on the spray pipe 182, and connect the solenoid valve to the controller 192 for communication. When the controller 192 controls the extruder 181 to squeeze the fire extinguishing agent bag 183, the solenoid valve on the spray pipe 182 in the corresponding isolation chamber 14 is opened synchronously, so that the fire extinguishing agent can be correctly sprayed into the isolation chamber 14 where the fire has caught fire.

[0057] Specifically, the extruder 181 includes a clamp a1811 and a clamp b1812, a screw rod 1813 is provided between the clamp a1811 and the clamp b1812, the screw rod 1813 passes through the clamp a1811 and is threadedly connected with the clamp b1812, a driving motor 1814 is provided on the clamp a1811, and the output shaft of the driving motor 1814 is axially connected with the screw rod 1813.

[0058] In the above structure, the splint a1811 is in a fixed state, the splint b1812 is in a movable state, and the splint b1812 can run along the axial direction of the screw rod 1813.

[0059] After a fire occurs in the isolation chamber 14, the temperature captured by the temperature sensor 1912 exceeds the set temperature threshold, and the controller 192 recognizes the occurrence of fire. At this time, the controller 192 controls the drive motor 1814 to operate, and the drive motor 1814 drives the screw 1813 to rotate, driving the clamp b1812 to move toward the clamp a1811, squeezing the fire extinguishing agent bag 183. The fire extinguishing agent in the fire extinguishing agent bag 183 is squeezed and transported to the sprinkler pipe 182 through the spring tube 1816, and is sprayed into the burning isolation chamber 14 through the sprinkler pipe 182 to suppress or eliminate the fire in the isolation chamber 14.

[0060] like Figure 5 As shown, the fire extinguishing mechanism 18 is arranged in the cavity b112 of the fire cabinet 1, and the bottom of the fire cabinet 1 is detachably provided with a bottom cover plate 13 for closing or opening the cavity b112.

[0061] Specifically, a connecting nozzle 1815 is provided on the splint b1812, and the output end of the fire extinguishing agent bag 183 is detachably connected to the connecting nozzle 1815, and the connecting nozzle 1815 is connected to the spring tube 1816.

[0062] The purpose of the above arrangement is that after the fire extinguishing agent is used up, the cover plate is removed, the fire extinguishing agent bag 183 is taken out, and a new fire extinguishing agent bag 183 can be replaced.

[0063] The specific process includes:

[0064] The controller 192 controls the driving motor 1814 to run, and the driving motor 1814 drives the screw rod 1813 to rotate, driving the clamping plate b1812 away from the clamping plate a1811. After opening the bottom cover plate 13, the fire extinguishing agent bag 183 is removed and replaced.

[0065] like Figure 2 As shown, the bottom of the fire cabinet 1 is provided with a plurality of legs 20, which are made of heat-insulating materials to prevent heat from being transferred from the legs 20 to the ground and causing damage to the ground. The heat-insulating materials include high-temperature nylon, fluoroplastics, etc.

[0066] It should be noted that the inner wall of the cabinet body 11 and the inner side of the cabinet door 12 are provided with flame retardant and heat-insulating materials, such as mineral wool, rock wool board, silicate foam, perlite, etc., wherein the isolation chamber 14, the cabinet body 11, the cabinet door 12, the smoke exhaust nozzle 16 and the smoke exhaust pipe 17 are all made of metal materials, such as steel, iron, aluminum alloy, etc.

[0067] The advantage of the above arrangement is that, after an old electronic device with a lithium battery catches fire, the fire can be prevented from spreading, and the fire can be confined to the internal area of ​​the fire cabinet 1 to avoid affecting other devices.

[0068] like Figure 3 As shown, a flame retardant heat insulation board 15 is provided between two adjacent isolation chambers 14 .

[0069] When more than one isolation chamber 14 is provided, a flame retardant heat insulation board 15 is required to be provided between two isolation chambers 14. The material of the flame retardant heat insulation board 15 includes mineral wool, rock wool board, silicate foam, perlite, etc. The advantage of this is that after a fire occurs in old electronic devices with lithium batteries in one or more isolation chambers 14, the fire can be prevented from affecting other normal old electronic devices with lithium batteries in the isolation chambers 14, thereby preventing the fire from spreading.

[0070] like Figure 2 , 3 As shown, the cabinet door 12 is used to close the fire cabinet 1 to the isolation chamber 14. After the cabinet door 12 is closed, the cabinet door 12 closes the cavity a111, and at the same time, the cabinet door 12 and the isolation chamber 14 close the opening toward the front direction of the cabinet door 12, so as to achieve isolation of the isolation chamber 14. When there are multiple isolation chambers 14, after the cabinet door 12 is closed, the cabinet door 12 simultaneously closes the openings of all the isolation chambers 14 toward the front direction of the cabinet door 12, and at this time, multiple independent isolation chambers 14 are formed to avoid affecting the electronic equipment in other isolation chambers 14 after a fire occurs in the isolation chamber 14, and to avoid the fire extinguishing agent from damaging the electronic equipment in other isolation chambers 14 during the fire extinguishing process.

[0071] According to the present invention, after an electronic device catches fire, a separately arranged isolation chamber 14 can be used to isolate the electronic device from other items, thereby reducing the losses caused by the fire. At the same time, the electronic equipment in the separately arranged isolation chamber 14 can be monitored, and when a fire occurs, the fire extinguishing mechanism 18 can be activated to extinguish the fire, thereby suppressing and eliminating the fire. On the other hand, when the detection mechanism 19 detects the occurrence of a fire, the fire information can be sent to the client terminal 3 and the fire-fighting terminal 4, so that relevant personnel can be notified as soon as possible after the fire occurs.

[0072] It should be noted that the specific models and specifications of the drive motor 1814, camera 1911, temperature sensor 1912, controller 192, data transceiver 192, server 2, client 3, and fire terminal 4 need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in the field, so it will not be described in detail.

[0073] The power supply and principles of the drive motor 1814, camera 1911, temperature sensor 1912, controller 192, data transceiver 192, server 2, client 3, and fire terminal 4 are clear to those skilled in the art and will not be described in detail here.

[0074] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fire extinguishing system, characterized in that: include: A fire extinguisher cabinet (1), comprising a cabinet body (11) and a cabinet door (12) hingedly connected to the front of the cabinet body, at least one isolation chamber (14) being arranged in a cavity a (111) of the fire extinguisher cabinet (1), the top of the cabinet body (11) being provided with a smoke exhaust nozzle (16) communicating with the interior thereof, and the top of the isolation chamber (14) being provided with a smoke exhaust port (141) communicating with the smoke exhaust nozzle (16); The fire cabinet (1) is also provided with a detection mechanism (19) and a fire extinguishing mechanism (18); The detection mechanism (19) is suitable for collecting data inside the isolation chamber (14) for monitoring, and when a fire occurs inside the isolation chamber (14), the fire extinguishing mechanism (18) is controlled to control the fire inside the isolation chamber (14); The detection mechanism (19) is communicatively connected with a server (2), a client (3) and a fire-fighting terminal (4); when the detection mechanism (19) detects the occurrence of a fire, it sends fire information to the server (2), and the server (2) distributes the fire information to the client (3) and the fire-fighting terminal (4); The cabinet door (12) is used to close the fire cabinet (1) to isolate the compartment (14).

2. A fire extinguishing system according to claim 1, characterized in that: A flame retardant heat insulation board (15) is provided between two adjacent isolation chambers (14).

3. A fire extinguishing system according to claim 1, characterized in that: The fire extinguishing mechanism (18) is arranged in the cavity b (112) of the fire cabinet (1), and comprises an extruder (181) and a fire extinguishing agent bag (183) arranged inside the extruder (181), wherein spray pipes (182) are arranged on both sides of the internal top wall of the isolation chamber (14), and the fire extinguishing agent bag (183) is connected to the spray pipe (182) through a spring tube (1816).

4. A fire extinguishing system according to claim 3, characterized in that: The extruder (181) includes a clamping plate a (1811) and a clamping plate b (1812), a screw rod (1813) is provided between the clamping plate a (1811) and the clamping plate b (1812), the screw rod (1813) passes through the clamping plate a (1811) and is threadedly connected to the clamping plate b (1812), a driving motor (1814) is provided on the clamping plate a (1811), and the output shaft of the driving motor (1814) is axially connected to the screw rod (1813).

5. A fire extinguishing system according to claim 4, characterized in that: The detection mechanism (19) comprises a detector (191), which is arranged on the top wall of the isolation chamber (14), and comprises a camera (1911) and a temperature sensor (1912), wherein the camera (1911) is used to collect image data inside the isolation chamber (14), and the temperature sensor (1912) is used to collect temperature data inside the isolation chamber (14).

6. A fire extinguishing system according to claim 5, characterized in that: The detection mechanism (19) further comprises a controller (192) and a data transceiver (192) communicatively connected thereto, wherein the controller (192) is communicatively connected to the drive motor (1814), the camera (1911), and the temperature sensor (1912), respectively, and the data transceiver (192) is communicatively connected to the server (2).

7. A fire extinguishing system according to any one of claims 1 to 6, characterized in that: The bottom of the fire cabinet (1) is provided with a plurality of supporting legs (20).

8. A fire extinguishing system according to claim 7, characterized in that: The supporting foot (20) is made of heat insulating material.

9. A fire extinguishing system according to claim 4, characterized in that: The clamping plate b (1812) is provided with a connecting nozzle (1815), the output end of the fire extinguishing agent bag (183) is detachably connected to the connecting nozzle (1815), and the connecting nozzle (1815) is communicated with the spring tube (1816).

10. A fire extinguishing system according to claim 9, characterized in that: The bottom of the fire cabinet (1) is detachably provided with a bottom cover plate (13) for closing or opening the cavity b (112).