Intelligent power distribution cabinet and temperature control fire extinguishing method thereof

Abstract

The invention relates to the technical field of power distribution cabinets, in particular to an intelligent power distribution cabinet and a temperature control fire extinguishing method thereof.The intelligent power distribution cabinet comprises a cabinet body, a cabinet door and an upper cabin are arranged at the upper end and the lower end of the interior of the cabinet body respectively, a lower cabin is hinged to the front end of the cabinet body, and an anti-explosion mechanism is arranged on the cabinet body and used for heat dissipation and explosion prevention; the gas storage device is mounted in the upper cabin and used for storing gas; the gas conveying assembly comprises a gas conveying pipe fixed to the inner wall of one end of the lower cabin; the execution assembly comprises a mounting plate fixed on the inner wall of the cabinet door, a plurality of longitudinally distributed shaft brackets are mounted on the mounting plate, a connecting pipe is rotatably mounted on the shaft brackets in a penetrating manner, an air outlet pipe is mounted at the right end of the connecting pipe, and a plurality of air outlet holes distributed at equal intervals are formed in the air outlet pipe; wide-angle coverage is realized through an automatic swinging spraying device, and a fire extinguishing blind area is thoroughly eliminated; the control assembly is automatically triggered according to the gas heating expansion principle to achieve automatic fire extinguishing, and quick response can be achieved without an external power source.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and in particular to an intelligent power distribution cabinet and a temperature control and fire extinguishing method thereof. Background Art

[0002] As a key device in modern power systems, the safety and reliability of intelligent power distribution cabinets directly affect the stable operation of the power supply system. With the continuous improvement of industrial automation levels, the limitations of traditional power distribution cabinets in dealing with complex working conditions have become increasingly prominent, especially in flammable and explosive environments such as petrochemicals and mining. Ordinary power distribution equipment is difficult to meet strict explosion-proof requirements. Most explosion-proof power distribution cabinets currently on the market use passive protection designs, which have problems such as low fire extinguishing efficiency, slow response speed, and limited coverage. In addition, they lack intelligent monitoring methods, making it impossible to achieve accurate fire extinguishing and remote management. After checking the publication number: CN205944814U, an explosion-proof intelligent distribution cabinet is disclosed. This technology discloses "an explosion-proof intelligent distribution cabinet, comprising a distribution cabinet body and a main switch, a radiator is installed on one side of the distribution cabinet body, a heat dissipation hole is installed on one side of the radiator, a carbon dioxide fire extinguisher is installed inside the distribution cabinet body, a nozzle switch is installed on the carbon dioxide fire extinguisher, a nozzle is installed at the bottom of the carbon dioxide fire extinguisher, a controller is installed on one side of the main switch, an explosive gas detector is installed on the controller, an ammeter is installed on one side of the controller, a display is installed on the ammeter, a leakage protector is installed on one side of the ammeter, a cabinet door and a door lock are installed on the distribution cabinet body, and a handle is installed on the cabinet door" and other technical solutions, which have "using an explosive gas detector to monitor accidental fires in the distribution cabinet, and using a carbon dioxide fire extinguisher to extinguish the fire, thereby reducing equipment damage and preventing secondary damage caused by the distribution cabinet"; Due to the lack of a zoning monitoring mechanism inside the distribution cabinet, the above solution requires that the fire sprinklers all adopt a uniform spray mode with a fixed flow rate. As a result, when a fire occurs, the fixed spray angle not only affects the fire extinguishing efficiency, but also may cause uneven distribution of the fire extinguishing agent, with some areas being under-covered and other areas being over-sprayed, reducing the fire extinguishing effect. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides an intelligent distribution cabinet that achieves wide-angle coverage through an automatically swinging spray device, completely eliminating fire-fighting blind spots; it uses the principle of gas expansion due to heat to automatically trigger the control component to achieve automatic fire extinguishing, and can respond quickly without an external power supply.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an intelligent power distribution cabinet, including a cabinet body, wherein the upper and lower ends of the cabinet body are respectively provided with a cabinet door and an upper compartment, and the front end of the cabinet body is hingedly connected to the lower compartment, and the cabinet body is provided with an explosion-proof mechanism for heat dissipation and explosion prevention, and the explosion-proof mechanism includes: a gas tank, installed in the upper compartment and used to store gas; a gas delivery assembly, comprising a gas delivery pipe fixed to the inner wall of one end of the lower compartment; The actuator assembly includes a mounting plate fixed to the inner wall of the cabinet door, a plurality of longitudinally distributed shaft brackets are installed on the mounting plate, a connecting pipe is rotatably installed on the shaft bracket, an air outlet pipe is installed at the right end of the connecting pipe, and a plurality of equally distributed air outlet holes are opened on the air outlet pipe, a support rod is fixed to the outer wall of the connecting pipe, a connecting rod is pivotally connected between the plurality of support rods, a shaft seat is installed on the mounting plate, an electric push rod is pivotally connected to the shaft seat, and the output end of the electric push rod is pivotally connected to the upper end of the connecting rod; A control component, disposed on the gas delivery component and used to control gas supply; The heat dissipation component is arranged in the lower compartment and is used for cooling and dissipating heat.

[0005] Preferably, the control component includes a cylinder installed on the air supply pipe, a valve plate is rotatably installed inside the cylinder, an extension cylinder is connected to and fixed on the outside of the cylinder, a shell is fixed on the extension cylinder, a gear is installed inside the shell and fixed to the outer end of the valve plate, a piston rod is slidably installed through the lower end of the extension cylinder, a rack is fixed on the upper end of the piston rod and is meshed with the gear for transmission.

[0006] Preferably, the control assembly further comprises a lower pole piece fixed to one side edge of the upper end of the valve plate, and an upper pole piece is fixed to one side of the inner wall of the cylinder.

[0007] Preferably, the heat dissipation assembly includes a fan installed at the lower end of the lower compartment, a three-way pipe is fixed to the air outlet of the fan, and one end of the three-way pipe is connected and fixed to the lower end of the air supply pipe, a box body is installed at the rear end of the lower compartment, and a connecting pipe is connected and fixed between the box body and the three-way pipe, and the inner wall of the box body is coated with silicone grease.

[0008] Preferably, the heat dissipation assembly further comprises a plurality of air outlet pipes connected and fixed to the upper end of the box body, and the air outlet pipes are provided with a plurality of air outlet holes distributed at equal intervals.

[0009] Preferably, the heat dissipation assembly further includes a filter plate installed inside the box body.

[0010] Preferably, the gas delivery assembly further comprises a plurality of elbows fixed on the gas delivery pipe, a telescopic hose is fixed on the elbow, and the other end of the telescopic hose is rotatably mounted.

[0011] Preferably, the execution component further includes a plurality of mounting holes distributed in an array on the mounting plate.

[0012] A temperature-controlled fire extinguishing method for an intelligent power distribution cabinet includes the above-mentioned intelligent power distribution cabinet and further includes the following steps: Step 1: The heat dissipation component absorbs the air in the lower cabin at a uniform speed so that the air in the lower cabin passes through the air transmission component. The heat dissipation component cools the absorbed air and then discharges it to dissipate heat in the lower cabin. Step 2: Connect the control component to the gas delivery component. The control component senses the pressure of the air passing through the gas delivery component. When the temperature in the lower cabin is too high, the air expands, increasing the pressure in the gas delivery component. This pushes the control component to open the gas tank valve to cool the lower cabin and extinguish the fire. Step 3: The execution components are connected to allow the inert gas to be ejected from the plurality of air outlets, and at the same time, the electric push rod drives the plurality of air outlets to swing.

[0013] The present invention provides an intelligent power distribution cabinet. Compared with the prior art, it has the following advantages: 1. The active swing function of the fire-extinguishing sprinkler is realized through the actuator. When a fire is detected, the system not only automatically releases inert gas, but also drives the sprinkler to swing back and forth through the electric push rod, so that the fire extinguishing agent forms a fan-shaped coverage area. This dynamic spraying method completely solves the coverage blind spot problem of traditional fixed sprinklers, ensuring that the fire-extinguishing gas can be evenly distributed to each risk point, significantly improving fire extinguishing efficiency.

[0014] 2. When the fan draws air from the lower compartment, it also enters the gas pipe through the tee pipe. When high-temperature gas is sucked into the gas pipe, the gas expands due to heat and the pressure increases, causing the high-temperature gas to enter the extension cylinder from the gas pipe, pushing the piston rod to drive the rack to move upward. The rack drives the valve disc to rotate and open through the gear, allowing the inert gas in the gas tank to pass through the gas pipe and the cylinder into the elbow, and then through the telescopic hose and the connecting pipe into the gas outlet pipe. The inert gas is finally ejected out of the gas outlet pipe; and when the temperature drops and the air pressure returns to normal, it automatically resets due to gravity.

[0015] 3. The air in the lower cabin is sucked in by the fan and enters the box body from the connecting pipe through the three-way pipe, and is cooled by the heat absorption of the silicone grease coated in the box body; and the air sucked into the box body is filtered by the filter plate to reduce the contamination of the silicone grease layer; at the same time, the air cooled by the inside of the box body is discharged into the lower cabin through the air outlet on the air outlet pipe, realizing air circulation while having a certain cooling effect on the lower cabin, and realizing both providing a high temperature signal for the explosion-proof mechanism and dissipating heat for the lower cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the structure of the explosion-proof mechanism of the present invention; Figure 3 Schematic diagram of the structure of the gas transmission component and the execution component in the present invention; Figure 4 Schematic diagram of the structure of the air outlet pipe in the present invention; Figure 5 Schematic diagram of the structure of the control component in the present invention; Figure 6 is a cross-sectional view of the control assembly of the present invention; Figure 7 It is a cross-sectional view of the heat dissipation component in the present invention.

[0017] In the figure: 1. Cabinet; 2. Cabinet door; 3. Upper compartment; 4. Lower compartment; 5. Explosion-proof mechanism; 51. Gas storage tank; 52. Gas delivery assembly; 521. Gas delivery pipe; 522. Elbow pipe; 523. Telescopic hose; 53. Actuator assembly; 531. Mounting plate; 532. Shaft frame; 533. Connecting pipe; 534. Exhaust pipe; 535. Exhaust hole; 536. Support rod; 537. Connecting rod; 538. Shaft seat; 539. Electric push rod Rod; 5310, mounting hole; 54, control assembly; 541, cylinder; 542, valve plate; 543, extension cylinder; 544, shell; 545, gear; 546, piston rod; 547, rack; 548, lower pole piece; 549, upper pole piece; 55, heat dissipation assembly; 551, fan; 552, three-way pipe; 553, box body; 554, connecting pipe; 555, air outlet pipe; 556, air outlet hole; 557, filter plate. DETAILED DESCRIPTION

[0018] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] See also Figure 1 - Figure 7 The present invention provides a technical solution: an intelligent power distribution cabinet, comprising a cabinet body 1, wherein the upper and lower ends of the cabinet body 1 are respectively provided with a cabinet door 2 and an upper compartment 3, and the front end of the cabinet body 1 is hinged with a lower compartment 4. The cabinet body 1 is provided with an explosion-proof mechanism 5 for heat dissipation and explosion prevention, and the explosion-proof mechanism 5 includes: a gas storage tank 51 , installed in the upper compartment 3 and used to store gas; The gas delivery assembly 52 includes a gas delivery pipe 521 fixed to the inner wall of one end of the lower compartment 4; The actuator assembly 53 includes a mounting plate 531 fixed to the inner wall of the cabinet door 2. The mounting plate 531 is mounted with a plurality of longitudinally distributed shaft brackets 532. A connecting pipe 533 is rotatably mounted on the shaft bracket 532. An air outlet pipe 534 is mounted on the right end of the connecting pipe 533. The air outlet pipe 534 has a plurality of equally spaced air outlet holes 535. A support rod 536 is fixed to the outer wall of the connecting pipe 533. A connecting rod 537 is pivotally connected between the plurality of support rods 536. A shaft seat 538 is mounted on the mounting plate 531. An electric push rod 539 is pivotally connected to the shaft seat 538. The output end of the electric push rod 539 is pivotally connected to the upper end of the connecting rod 537. A control assembly 54 is provided on the gas delivery assembly 52 and is used to control the gas supply; The heat dissipation assembly 55 is disposed in the lower compartment 4 and is used for cooling and dissipating heat.

[0020] In this embodiment, when a fire occurs inside the distribution cabinet, the control component 53 controls the gas delivery component 52 to output the inert gas in the gas tank 51, thereby supplying gas to the actuator component 54. At the same time, the control component 53 controls the output end of the electric push rod 539 to continuously extend and retract, so that the electric push rod 539 drives several support rods 536 to rotate through the connecting rod 537, and the support rod 536 drives the outlet pipe 534 to rotate back and forth through the connecting pipe 533, so that the outlet hole 535 on the outlet pipe 534 swings back and forth to expand the spray range of the inert gas, so that the inert gas evenly covers the electrical components in the lower compartment 4, thereby reducing the fire extinguishing blind spot to a certain extent.

[0021] Specifically, the control component 54 includes a cylinder 541 installed on the air supply pipe 521, a valve plate 542 is rotatably installed inside the cylinder 541, an extension cylinder 543 is fixed to the outside of the cylinder 541, a shell 544 is fixed on the extension cylinder 543, a gear 545 is installed inside the shell 544 and fixed to the outer end of the valve plate 542, a piston rod 546 is slidably installed through the lower end of the extension cylinder 543, a rack 547 is fixed to the upper end of the piston rod 546 and meshes with the gear 545 for transmission.

[0022] In this embodiment, when the fan 551 is running, it sucks in the air in the lower chamber 4 and also enters the air supply pipe 521 through the three-way pipe 552. When the high-temperature gas is sucked into the air supply pipe 521, the gas expands due to heat and the pressure increases, so that the high-temperature gas enters the extension tube 543 from the air supply pipe 521 and pushes the piston rod 546 to drive the rack 547 to move upward. The rack 547 drives the valve plate 542 to rotate and open through the gear 545, so that the inert gas in the gas storage tank 51 passes through the air supply pipe 521 and the cylinder 541 into the bend pipe 522, and then passes through the telescopic hose 523 and the connecting pipe 533 into the air outlet pipe 534. The inert gas is finally ejected outward from the air outlet pipe 534; and when the temperature drops and the air pressure returns to normal, it is reset by gravity.

[0023] Specifically, the control assembly 54 further includes a lower pole piece 548 fixed to an edge of one side of the upper end of the valve plate 542 , and an upper pole piece 549 fixed to one side of the inner wall of the cylinder 541 .

[0024] In this embodiment, when the valve plate 542 is opened, the lower pole piece 548 on the valve plate 542 separates from the upper pole piece 549 on the cylinder 541, triggering a signal to disconnect the power supply of the fan 551, stop inhaling more dangerous gases, and avoid continuous input of heat sources or combustibles.

[0025] Specifically, the heat dissipation assembly 55 includes a fan 551 installed at the lower end of the lower compartment 4, a three-way pipe 552 is fixed to the air outlet of the fan 551, and one end of the three-way pipe 552 is connected and fixed to the lower end of the air supply pipe 521, a box body 553 is installed at the rear end of the lower compartment 4, and a connecting pipe 554 is connected and fixed between the box body 553 and the three-way pipe 552, and the inner wall of the box body 553 is coated with silicone grease.

[0026] In this embodiment, the air in the lower chamber 4 is sucked in by the fan 551, and enters the box body 553 from the connecting pipe 554 through the three-way pipe 552, and is cooled by absorbing heat through the silicone grease coated in the box body 553; and, it is achieved by providing a high temperature signal for the explosion-proof mechanism 5 and dissipating heat for the lower chamber 4.

[0027] Specifically, the heat dissipation assembly 55 further includes a plurality of air outlet pipes 555 connected and fixed to the upper end of the box body 553 , and a plurality of air outlet holes 556 equidistantly distributed are formed on the air outlet pipes 555 .

[0028] In this embodiment, the air cooled by the box body 553 is discharged into the lower compartment 4 through the air outlet 556 on the air outlet pipe 555, thereby achieving air circulation and having a certain cooling effect on the lower compartment 4.

[0029] Specifically, the heat dissipation assembly 55 further includes a filter plate 557 installed inside the box body 553 .

[0030] In this embodiment, the air sucked into the box body 553 is filtered by the filter plate 557 to reduce the contamination of the silicone grease layer.

[0031] Specifically, the gas delivery assembly 52 further includes a plurality of elbows 522 fixed on the gas delivery pipe 521 . A telescopic hose 523 is fixed on the elbow 522 , and the other end of the telescopic hose 523 is rotatably mounted on the connecting pipe 533 .

[0032] In this embodiment, the telescopic hose 523 ensures the sealing of gas transmission and can adapt to the displacement caused by the swing of the connecting pipe 533.

[0033] Specifically, the execution component 53 further includes a plurality of mounting holes 5310 distributed in an array on the mounting plate 531 .

[0034] In this embodiment, the actuator 53 can be installed in an adaptive distribution position and quantity according to the position of the electrical components installed inside the lower compartment 4 through the mounting holes 5310 on the mounting plate 531, thereby improving the adaptability to cabinets 1 of different high specifications.

[0035] Specifically: A temperature control fire extinguishing method for an intelligent power distribution cabinet includes the above-mentioned intelligent power distribution cabinet, and further includes the following steps: Step 1: The heat dissipation component 55 absorbs the air in the lower compartment 3 at a uniform rate so that the air in the lower compartment 3 passes through the air delivery component 52. The heat dissipation component 55 cools the absorbed air and then discharges it to dissipate heat in the lower compartment 3. Step 2: The gas delivery assembly 52 is connected to the control assembly 54. The control assembly 54 senses the pressure of the air passing through the gas delivery assembly 52. ​​When the temperature in the lower compartment 3 is too high, the air expands, increasing the pressure in the gas delivery assembly 52. ​​This pushes the control assembly 54 to open the valve of the gas tank 51 to cool the lower compartment 3 and extinguish the fire. Step 3: The actuator 53 is connected to allow the inert gas to be ejected from the plurality of gas outlets 535 , and at the same time, the electric push rod 539 drives the plurality of gas outlets 535 to swing.

[0036] The working principle and usage process of the present invention are as follows: First, the air in the lower compartment 4 is sucked in by the fan 551, and the sucked air enters the box body 553 through the connecting pipe 554 through the three-way pipe 552, and is cooled by the silicone grease coated in the box body 553 while absorbing heat. In addition, the air sucked into the box body 553 is filtered by the filter plate 557, which also reduces the contamination of the silicone grease layer. At the same time, the cooled air in the box body 553 is discharged into the cabinet body 1 through the air outlet 556 on the air outlet pipe 555, thus realizing air circulation and having a certain cooling effect on the components inside the cabinet body 1. The inert gas is then ejected from the exhaust pipe 534. The inert gas is then ejected from the exhaust pipe 534. At the same time, the output end of the electric push rod 539 is continuously extended and retracted, so that the electric push rod 539 drives several support rods 536 to rotate through the connecting rod 537, and the support rod 536 drives the air outlet pipe 534 to rotate back and forth through the connecting pipe 533, so that the air outlet hole 535 on the air outlet pipe 534 swings back and forth, expanding the spray range, so that the inert gas is evenly covered on the electrical components in the lower compartment 4, avoiding coverage blind spots.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent power distribution cabinet, comprising a cabinet body (1), wherein the upper and lower ends of the cabinet body (1) are respectively provided with a cabinet door (2) and an upper compartment (3), and the front end of the cabinet body (1) is hinged with a lower compartment (4), characterized in that: The cabinet (1) is provided with an explosion-proof mechanism (5) for heat dissipation and explosion prevention. The explosion-proof mechanism (5) comprises: a gas storage tank (51) installed in the upper compartment (3) and used to store gas; A gas delivery assembly (52), comprising a gas delivery pipe (521) fixed to the inner wall of one end of the lower chamber (4); The actuator assembly (53) includes a mounting plate (531) fixed to the inner wall of the cabinet door (2), a plurality of longitudinally distributed shaft frames (532) are mounted on the mounting plate (531), a connecting pipe (533) is rotatably mounted on the shaft frame (532), an air outlet pipe (534) is mounted on the right end of the connecting pipe (533), a plurality of equally spaced air outlet holes (535) are opened on the air outlet pipe (534), a support rod (536) is fixed to the outer wall of the connecting pipe (533), a connecting rod (537) is pivotally connected between the plurality of support rods (536), a shaft seat (538) is mounted on the mounting plate (531), an electric push rod (539) is pivotally connected to the shaft seat (538), and an output end of the electric push rod (539) is pivotally connected to the upper end of the connecting rod (537); A control assembly (54) is provided on the gas delivery assembly (52) and is used to control the gas supply; The heat dissipation component (55) is arranged in the lower compartment (4) and is used for cooling and dissipating heat.

2. The intelligent power distribution cabinet according to claim 1, characterized in that: The control assembly (54) includes a cylinder (541) mounted on the gas transmission pipe (521), a valve plate (542) rotatably mounted inside the cylinder (541), an extension cylinder (543) connected to and fixed to the outside of the cylinder (541), a housing (544) fixed to the extension cylinder (543), a gear (545) mounted inside the housing (544) and fixed to the outer end of the valve plate (542), a piston rod (546) slidably mounted through the lower end of the interior of the extension cylinder (543), a rack (547) fixed to the upper end of the piston rod (546) and meshing with the gear (545) for transmission.

3. The intelligent power distribution cabinet according to claim 2, characterized in that: The control assembly (54) further comprises a lower pole piece (548) fixed to an edge of one side of the upper end of the valve plate (542), and an upper pole piece (549) is fixed to one side of the inner wall of the cylinder (541).

4. The intelligent power distribution cabinet according to claim 1, characterized in that: The heat dissipation assembly (55) includes a fan (551) installed at the lower end of the lower compartment (4), a three-way pipe (552) is fixed to the air outlet of the fan (551), and one end of the three-way pipe (552) is connected and fixed to the lower end of the air supply pipe (521), a box body (553) is installed at the rear end of the lower compartment (4), and a connecting pipe (554) is connected and fixed between the box body (553) and the three-way pipe (552), and the inner wall of the box body (553) is coated with silicone grease.

5. The intelligent power distribution cabinet according to claim 4, characterized in that: The heat dissipation assembly (55) further comprises a plurality of air outlet pipes (555) connected and fixed to the upper end of the box body (553), and the air outlet pipes (555) are provided with a plurality of air outlet holes (556) distributed at equal intervals.

6. The intelligent power distribution cabinet according to claim 4, characterized in that: The heat dissipation assembly (55) further includes a filter plate (557) installed inside the box body (553).

7. The intelligent power distribution cabinet according to claim 1, characterized in that: The gas delivery assembly (52) further comprises a plurality of bent pipes (522) fixed on the gas delivery pipe (521), a telescopic hose (523) being fixed on the bent pipe (522), and the other end of the telescopic hose (523) being rotatably mounted on (533).

8. The intelligent power distribution cabinet according to claim 1, characterized in that: The execution assembly (53) further includes a plurality of mounting holes (5310) arranged in an array on the mounting plate (531).

9. A temperature control fire extinguishing method for an intelligent power distribution cabinet, characterized in that : Using an intelligent distribution cabinet according to any one of claims 1 to 8, comprising the following steps: Step 1: The heat dissipation component (55) absorbs the air in the lower compartment (3) at a uniform speed so that the air in the lower compartment (3) passes through the air delivery component (52), and the heat dissipation component (55) cools the absorbed air and discharges it to dissipate heat from the lower compartment (3); Step 2: The gas delivery assembly (52) is connected to the control assembly (54), and the control assembly (54) senses the pressure of the air passing through the gas delivery assembly (52); when the temperature in the lower compartment (3) is too high, the air expands to increase the pressure in the gas delivery assembly (52), pushing the control assembly (54) to open the valve of the gas storage tank (51) to cool the lower compartment (3) and extinguish the fire; Step 3: The actuator (53) is connected to allow the inert gas to be ejected from the plurality of gas outlets (535), and at the same time, the electric push rod (539) drives the plurality of gas outlets (535) to swing.

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