A safety high-voltage distribution cabinet with built-in trigger-type fire extinguishing structure and its fire extinguishing method

Abstract

This invention relates to a safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure and its fire extinguishing method. The cabinet includes a cabinet body, a hollow panel, a smoke detector, a main power switch, a locking assembly, a driving assembly, an elastic assembly, a fire extinguishing assembly, and a transmission assembly. The smoke detector and the main power switch are fixed to the inner wall of the cabinet. The hollow panel is vertically slidably mounted on the front side of the cabinet, with multiple nozzles evenly arranged on it. The locking assembly is used to fix the hollow panel. The driving assembly is connected to the main power switch and the locking assembly. The fire extinguishing assembly is connected to the hollow panel. The transmission assembly is connected to both the hollow panel and the fire extinguishing assembly. In this invention, when the smoke detector detects a fire, the driving assembly quickly activates, shuts off the main power switch, releases the limit on the hollow panel, allowing it to fall freely, and simultaneously activates the fire extinguishing assembly, spraying extinguishing agent through the nozzles. The transmission assembly ensures that the extinguishing agent fully covers the interior of the cabinet, improving the fire extinguishing effect and avoiding incomplete localized fire suppression.

Description

Technical Field

[0001] This invention relates to a safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure and its fire extinguishing method. Background Technology

[0002] High-voltage switchgear is a crucial piece of equipment in power systems used for distributing and controlling electrical energy, and it is widely used in industrial, commercial, and civil buildings. However, due to the dense internal electrical components and high operating voltage, a fire can not only damage the equipment but also trigger serious safety accidents, potentially endangering lives and property.

[0003] Traditional high-voltage switchgear typically relies solely on external fire suppression systems, lacking built-in fire monitoring and automatic extinguishing capabilities. Once a fire breaks out, it can spread rapidly, causing equipment damage and further fire escalation. Existing fire monitoring equipment is mostly passive, unable to detect and address fires in their early stages, resulting in long response times and difficulty in effectively controlling the blaze. Furthermore, current extinguishing methods are often localized, typically spraying extinguishing agents only on the exterior of the equipment or specific areas. This method struggles to cover all corners inside the high-voltage switchgear, especially areas with dense electrical components, leading to incomplete extinguishing and the possibility of the fire continuing to burn in uncovered areas, potentially creating new fire hazards. In the event of a fire, traditional high-voltage switchgear often requires manual intervention to cut off the power and activate the extinguishing equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a safe high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure and its fire extinguishing method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure includes a cabinet body, a hollow plate, a smoke alarm and a main power switch, wherein the smoke alarm and the main power switch are both installed on the inner wall of the cabinet body. The hollow panel is vertically slidably disposed on the front side of the cabinet. The cabinet is provided with a locking component that cooperates with the hollow panel. The locking component makes the hollow panel stationary at the top of the cabinet. Multiple nozzles are evenly connected along the length direction on the side of the hollow panel near the inside of the cabinet. The cabinet is equipped with a drive assembly, which works in conjunction with the main power switch and the locking assembly. In the event of a fire, the smoke alarm will activate the drive assembly via an electrical signal. The drive assembly will then simultaneously turn off the main power switch and release the locking assembly from its restraint on the hollow panel, allowing the hollow panel to fall freely. The bottom of the cabinet is equipped with an elastic assembly to cushion the falling hollow panel. A fire extinguishing assembly is installed at the bottom of the cabinet. The fire extinguishing assembly is connected to the hollow panel. When the fire extinguishing assembly is activated, the multiple nozzles connected to the hollow panel will spray fire extinguishing agent. The cabinet is equipped with a transmission component, which cooperates with the hollow panel and the fire extinguishing component. When the hollow panel is in free fall, the transmission component will drive the fire extinguishing component to activate, thereby achieving all-round spraying of fire extinguishing agent inside the cabinet.

[0006] As a further embodiment of the present invention: the locking assembly includes a fixing plate and a stop bar. The fixing plate is disposed on the cabinet body, and a sliding groove is horizontally opened on one side of the fixing plate. One end of the stop bar abuts against the bottom of the hollow plate. A slider is disposed on one side of the stop bar. The slider is located in the sliding groove and slides in cooperation with the other. The slide groove is equipped with a limiting post inside, and a first spring is also installed inside the slide groove. The two ends of the first spring abut against the slider and the inner wall of the slide groove, respectively, so as to drive the slider to always abut against the limiting post. Thus, under the action of no external force, one end of the stop rod is always located at the bottom of the hollow plate. The other end of the stop rod is equipped with a trapezoidal block, and the inclined surface of the trapezoidal block is downward.

[0007] As a further embodiment of the present invention: the driving component includes a U-shaped plate and a micro motor, wherein the U-shaped plate is vertically slidably mounted on the cabinet; The micro motor is vertically mounted on the cabinet and electrically connected to the smoke detector. The output end of the micro motor is fixedly connected to the bottom of the U-shaped plate.

[0008] As a further embodiment of the present invention: a second trapezoidal block is provided on the U-shaped plate, and the inclined surface of the second trapezoidal block is in contact with the inclined surface of the first trapezoidal block. When the second trapezoidal block moves vertically upward, the first trapezoidal block will drive the stop rod to move horizontally away from the hollow plate. A push block is provided on the U-shaped plate, and the push block is in contact with the lever of the main power switch.

[0009] As a further embodiment of the present invention: the fire extinguishing assembly includes a fire extinguisher and a hose, the fire extinguisher is fixedly installed at the bottom of the cabinet, and the hose connects the output end of the fire extinguisher to the hollow plate; The fire extinguisher is equipped with a valve body at its output end, and a first protruding rod is horizontally mounted on the valve body. When the first protruding rod is subjected to an external force to rotate the valve body, the pressurized extinguishing agent inside the fire extinguisher will be sprayed out from multiple nozzles after being guided by the hose and the hollow plate.

[0010] As a further embodiment of the present invention: the transmission assembly includes a fixed base and a rotating rod, the fixed base is disposed on the hollow plate, and the rotating rod is vertically rotatably disposed on the cabinet; The fixed base has a rotating collar inside, which is slidably fitted onto the outer wall of the rotating rod. The inner wall of the collar has a vertical groove along its length, and the outer wall of the rotating rod has a vertical protrusion along its length. The protrusion slides into the groove. When the hollow plate falls freely, the collar will slide on the outer wall of the rotating rod, and the protrusion and the groove will also slide against each other. When the collar rotates, the rotating rod will also rotate under the action of the protrusion and the groove.

[0011] As a further embodiment of the present invention: a first bevel gear is coaxially arranged on the collar, and a rotating shaft is horizontally rotatably arranged on the fixed base. A second bevel gear and a gear are coaxially arranged at both ends of the rotating shaft, and the second bevel gear and the first bevel gear mesh with each other. A toothed plate is vertically installed on the cabinet, and the gear and the toothed plate mesh with each other.

[0012] As a further embodiment of the present invention: the transmission assembly further includes a transmission shaft and a first pulley. The transmission shaft is rotatably mounted on the cabinet. The first pulley is coaxially mounted on the rotating rod. A second pulley is coaxially mounted on the transmission shaft. The first pulley and the second pulley are connected by a toothed belt. A disc is coaxially mounted on the drive shaft, and a second protruding rod is horizontally mounted on the disc. The second protruding rod is in contact with the first protruding rod. When the disc rotates, the second protruding rod will push the first protruding rod to deflect at a certain angle and then separate, thereby opening the valve body.

[0013] As a further embodiment of the present invention: the elastic component includes a sleeve and a sliding rod, the bottom end of the sliding rod is slidably engaged with the top end of the sleeve, and the sleeve is vertically disposed on the cabinet and located directly below the hollow panel; The sleeve is equipped with a second spring, the two ends of which abut against the bottom end of the slide rod and the inner bottom of the sleeve, respectively.

[0014] A fire extinguishing method for a safety-type high-voltage switchgear utilizing the built-in trigger-type fire extinguishing structure as described above includes the following steps: Step 1: Fire detection and signal transmission. The smoke alarm monitors the internal environment of the cabinet in real time. When smoke is detected, the drive component is immediately activated via an electrical signal. Step 2: Cut off the power and unlock the hollow panel. The micro motor starts and moves the U-shaped panel upward. The push block pushes the lever of the main power switch to cut off the power inside the cabinet. The second trapezoidal block pushes the first trapezoidal block, which moves the stop bar horizontally to release the limit on the hollow panel. The hollow panel begins to fall freely. Step 3: The buffer and transmission components are activated. When the hollow plate falls, the slide rod slides inside the sleeve, the No. 2 spring is compressed, absorbs kinetic energy, and reduces the impact on the bottom of the cabinet. The falling of the hollow plate drives the fixed seat to move, and the collar slides on the outer wall of the rotating rod and drives the rotating rod to rotate. Step 4: Fire extinguishing assembly activation and extinguishing agent spraying. The rotating rod drives the transmission shaft to rotate via the toothed belt. The second convex rod on the disc pushes the first convex rod on the valve body to deflect, opening the valve body. The extinguishing agent in the fire extinguisher is transmitted to the hollow plate through the hose and sprayed out from multiple nozzles to achieve all-round fire extinguishing.

[0015] Compared with the prior art, the beneficial effects of the present invention are: Automatic fire extinguishing and safety assurance: The smoke detector monitors the fire situation inside the cabinet in real time. Once smoke is detected, the drive component can be activated quickly, turning off the main power switch and releasing the limit of the hollow plate, allowing it to fall freely. At the same time, the transmission component drives the fire extinguishing component to activate, spraying fire extinguishing agent through the nozzle. This achieves rapid response and automatic fire extinguishing, effectively reducing the risk of fire damage to the internal equipment of the high-voltage distribution cabinet and ensuring the safe operation of the equipment. The all-around fire suppression system features multiple nozzles evenly distributed along the length of the hollow panel. During the free fall of the hollow panel, the transmission component ensures that the fire suppression components are activated, allowing the extinguishing agent to be sprayed into every corner of the cabinet from all directions. This improves the fire suppression effect, avoids the problem of incomplete local fire suppression, and further enhances the safety of the high-voltage distribution cabinet. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure.

[0017] Figure 2 This is a cross-sectional view of the cabinet in one embodiment of a safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure.

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0020] Figure 5 This is a cross-sectional view of the cabinet and sleeve in one embodiment of a safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure.

[0021] Figure 6 for Figure 5 Enlarged view of point C.

[0022] Figure 7 This is a cross-sectional view of the cabinet from another perspective in one embodiment of a safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure.

[0023] Figure 8 for Figure 7 Enlarged view of point D in the middle.

[0024] Figure 9 This is a schematic diagram showing the disassembled locking component in one embodiment of a safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure.

[0025] Figure 10 This is a schematic diagram showing the partial disassembly of transmission components in one embodiment of a safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure.

[0026] Figure 11 This is another perspective sectional view of the cabinet in one embodiment of a safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure.

[0027] Figure 12 for Figure 11 Enlarged view of point E in the middle.

[0028] In the diagram: 1. Cabinet; 2. Hollow core panel; 201. Nozzle; 3. Smoke detector; 4. Main power switch; 5. Fixing plate; 501. Slide rail; 502. Limiting post; 6. Stop bar; 601. Sliding block; 7. Spring No. 1; 8. Trapezoidal block No. 1; 9. U-shaped plate; 10. Miniature motor; 11. Trapezoidal block No. 2; 12. Push block; 13. Fire extinguisher; 14. Hose; 15. Valve body; 1501. 16. Fixed seat; 17. Rotating rod; 1701. Protruding column; 18. Collar; 1801. Groove; 19. First bevel gear; 20. Rotating shaft; 21. Second bevel gear; 22. Gear; 23. Gear plate; 24. Drive shaft; 25. First pulley; 26. Second pulley; 27. Toothed belt; 28. Disc; 2801. Second protruding rod; 29. ​​Sleeve; 30. Slide rod; 31. Second spring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0031] Please see Figures 1-12 In this embodiment of the invention, a safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure includes a cabinet body 1, a hollow plate 2, a smoke alarm 3 and a main power switch 4, wherein the smoke alarm 3 and the main power switch 4 are both installed on the inner wall of the cabinet body 1. The hollow panel 2 is vertically slidably disposed on the front side of the cabinet 1. The cabinet 1 is provided with a locking component that cooperates with the hollow panel 2. The locking component makes the hollow panel 2 stationary at the top of the cabinet 1. Multiple nozzles 201 are uniformly connected along the length direction on the side of the hollow panel 2 near the interior of the cabinet 1. The cabinet 1 is equipped with a drive assembly, which cooperates with the main power switch 4 and the locking assembly respectively. When a fire occurs, the smoke alarm 3 will activate the drive assembly through an electrical signal. The drive assembly will simultaneously turn off the main power switch 4 and drive the locking assembly to release the limit on the hollow plate 2, allowing the hollow plate 2 to fall freely. The bottom of the cabinet 1 is equipped with an elastic assembly, which is used to cushion the falling hollow plate 2. A fire extinguishing assembly is provided at the bottom of the cabinet 1. The fire extinguishing assembly is connected to the hollow panel 2. When the fire extinguishing assembly is activated, the multiple nozzles 201 connected to the hollow panel 2 will spray out fire extinguishing agent. The cabinet 1 is equipped with a transmission component, which cooperates with the hollow plate 2 and the fire extinguishing component. When the hollow plate 2 is in free fall, the transmission component will drive the fire extinguishing component to open, thereby realizing the spraying of fire extinguishing agent in all directions inside the cabinet 1.

[0032] In this scheme, a smoke detector 3 and a main power switch 4 are fixedly installed on the inner wall of the high-voltage distribution cabinet 1 for real-time monitoring of the fire and control of the power supply; a hollow plate 2 is vertically slidably installed on the front side of the cabinet 1 and fixed to the top of the cabinet 1 by a locking assembly. Multiple nozzles 201 are evenly arranged along the length of the side of the plate near the inside of the cabinet 1 for spraying fire extinguishing agent. Under normal operating conditions, the main power switch 4 is in the closed state to ensure normal power supply to the distribution cabinet; the smoke alarm 3 continuously monitors the internal environment of the cabinet 1 and is in standby state, ready to detect fire at any time; the locking assembly firmly fixes the hollow plate 2 to the top of the cabinet 1, keeping it in a stationary state, and the fire extinguishing assembly and transmission assembly are also in standby state, waiting for the trigger signal. When a fire occurs inside cabinet 1 and smoke is generated, the smoke alarm 3 will immediately detect the presence of smoke and transmit the fire information to the drive component through an electrical signal. Upon receiving the electrical signal, the drive component quickly starts and executes two synchronous actions: 4. Turn off the main power switch: Cut off the power supply to the distribution cabinet to prevent the fire from spreading due to the continued supply of current, and at the same time reduce the safety hazards that may be caused by the electrical equipment being energized during the fire extinguishing process. Release the locking assembly from the hollow plate 2: causing the hollow plate 2 to lose support and begin free fall. Hollow board 2 falls freely under the action of gravity. During the fall, the elastic component at its bottom acts as a buffer to prevent the hollow board 2 from impacting and damaging the bottom of cabinet 1 or other components due to excessive falling speed. The transmission component is connected to the hollow plate 2 and the fire extinguishing component. When the hollow plate 2 begins to fall freely, the transmission component is triggered and drives the fire extinguishing component to open. After the fire extinguishing components are activated, the fire extinguishing agent delivery pipeline connected to the hollow plate 2 is opened, and the fire extinguishing agent is sprayed out through multiple nozzles 201 evenly arranged along the length of the hollow plate 2. Since the nozzles 201 are evenly distributed, the fire extinguishing agent can cover the space inside the cabinet 1 in all directions, effectively extinguishing the fire, thereby achieving all-round fire protection inside the high-voltage distribution cabinet.

[0033] Please see Figure 3 and Figure 9 The locking assembly includes a fixing plate 5 and a stop bar 6. The fixing plate 5 is disposed on the cabinet 1, and a horizontal groove 501 is provided on one side of the fixing plate 5. One end of the stop bar 6 abuts against the bottom of the hollow plate 2. A slider 601 is provided on one side of the stop bar 6. The slider 601 is located in the groove 501 and slides with each other. The slide groove 501 is provided with a limiting post 502 inside, and a first spring 7 is also provided inside the slide groove 501. The two ends of the first spring 7 abut against the slider 601 and the inner wall of the slide groove 501 respectively, so as to drive the slider 601 to always abut against the limiting post 502, so that when no external force is applied, one end of the stop rod 6 is always located at the bottom of the hollow plate 2, and the other end of the stop rod 6 is provided with a trapezoidal block 8, with the inclined surface of the trapezoidal block 8 facing downward.

[0034] In this embodiment, the locked state is as follows: Under normal circumstances, the elastic force of the first spring 7 causes the slider 601 to be tightly attached to the limiting post 502, and the stop bar 6 is kept in a horizontal position under the action of the slider 601. One end of the stop bar 6 is in close contact with the bottom of the hollow plate 2, thereby firmly fixing the hollow plate 2 to the top of the cabinet 1, preventing the hollow plate 2 from falling accidentally, and ensuring the stable operation of the equipment. Unlocking action: When the drive component receives the electrical signal from the smoke alarm 3 and starts, the drive component will apply an upward force to the first trapezoidal block 8. Since the slope of the first trapezoidal block 8 is downward, when it is subjected to an upward force, it will push the stop bar 6 to move horizontally to the outside of the slide groove 501. At this time, the slider 601 overcomes the elastic force of the first spring 7 under the drive of the stop bar 6 and slides along the slide groove 501 in a direction away from the limit post 502. Release of limit: As the stop bar 6 moves horizontally, its contact with the bottom of the hollow plate 2 is released, the hollow plate 2 loses its support, and thus can begin free fall under the action of gravity, thereby triggering the subsequent fire extinguishing action.

[0035] Please see Figure 3 The drive assembly includes a U-shaped plate 9 and a micro motor 10, wherein the U-shaped plate 9 is vertically slidably mounted on the cabinet 1; The micro motor 10 is vertically mounted on the cabinet 1 and electrically connected to the smoke alarm 3. The output end of the micro motor 10 is fixedly connected to the bottom of the U-shaped plate 9. The U-shaped plate 9 is provided with a second trapezoidal block 11. The inclined surface of the second trapezoidal block 11 is in contact with the inclined surface of the first trapezoidal block 8. When the second trapezoidal block 11 moves vertically upward, the first trapezoidal block 8 will drive the stop rod 6 to move horizontally away from the hollow plate 2. A push block 12 is provided on the U-shaped plate 9, and the push block 12 is in contact with the lever of the main power switch 4.

[0036] In this embodiment, when a fire occurs inside the cabinet 1, the smoke alarm 3 will start the micro motor 10 via an electrical signal after detecting the smoke; After the micro motor 10 starts, its output end drives the U-shaped plate 9 to move vertically upward. When the U-shaped plate 9 moves upward, the second trapezoidal block 11 on it interacts with the inclined surface of the first trapezoidal block 8. Since the inclined surface of the first trapezoidal block 8 is downward and the inclined surface of the second trapezoidal block 11 is upward, when the U-shaped plate 9 moves upward, the second trapezoidal block 11 will push the first trapezoidal block 8 to move horizontally to the right, that is, away from the direction of the hollow plate 2. The movement of the first trapezoidal block 8 will drive the stop rod 6 to move horizontally, thereby releasing the stop rod 6 from the bottom of the hollow plate 2, causing the hollow plate 2 to lose support and begin free fall. At the same time, the push block 12 on the U-shaped plate 9 will contact the lever of the main power switch 4 during the upward movement and push the lever, thereby switching the main power switch 4 from the closed state to the open state, cutting off the power supply inside the cabinet 1, and preventing the fire from spreading due to the continued supply of current.

[0037] Please see Figure 5 , Figure 6 and Figure 8 The fire extinguishing assembly includes a fire extinguisher 13 and a hose 14. The fire extinguisher 13 is fixedly installed at the bottom of the cabinet 1, and the hose 14 connects the output end of the fire extinguisher 13 to the hollow plate 2. The fire extinguisher 13 is provided with a valve body 15 at its output end. A first protruding rod 1501 is horizontally arranged on the valve body 15. When the first protruding rod 1501 is driven by an external force to rotate the valve body 15, the pressurized extinguishing agent in the fire extinguisher 13 will be sprayed out from multiple nozzles 201 after being guided by the hose 14 and the hollow plate 2.

[0038] In this embodiment, the valve body 15 is installed at the output end of the fire extinguisher 13 to control the release of the extinguishing agent. A first protruding rod 1501 is horizontally arranged on the valve body 15. The design of the first protruding rod 1501 allows the valve body 15 to be rotated by external force, thereby controlling the release of the extinguishing agent. In the initial state, the valve body 15 is in the closed state, and the extinguishing agent is sealed in the fire extinguisher 13 without leakage. When a fire occurs inside cabinet 1, smoke alarm 3 detects the smoke and sends an electrical signal, activating the drive assembly and causing hollow plate 2 to fall freely. At this time, the transmission assembly is triggered. The transmission assembly is activated the instant the hollow plate 2 falls freely, and its function is to open the valve body 15 in the fire extinguishing assembly. The transmission assembly will apply an external force to the first protruding rod 1501. After the first protruding rod 1501 is subjected to the external force, it drives the valve body 15 to rotate. The rotation of the valve body 15 causes the output valve of the fire extinguisher 13 to open, and the pressurized extinguishing agent in the fire extinguisher 13 begins to be released. The released extinguishing agent is transmitted into the hollow panel 2 through the hose 14, and under the guidance of the hollow panel 2, it is sprayed out from multiple nozzles 201. Since the nozzles 201 are evenly distributed along the length of the hollow panel 2, the extinguishing agent can cover the space inside the cabinet 1 in all directions, thus effectively extinguishing the fire.

[0039] Please see Figure 4 , Figure 10 and Figure 12 The transmission assembly includes a fixed base 16 and a rotating rod 17. The fixed base 16 is disposed on the hollow plate 2, and the rotating rod 17 is vertically rotatably disposed on the cabinet 1. The fixed base 16 is rotatably provided with a collar 18, which is slidably sleeved on the outer wall of the rotating rod 17. The inner wall of the collar 18 is vertically provided with a groove 1801 along its length direction. The outer wall of the rotating rod 17 is vertically provided with a protrusion 1701 along its length direction. The protrusion 1701 is slidably fitted into the groove 1801. When the hollow plate 2 falls freely, the collar 18 will slide on the outer wall of the rotating rod 17, and the protrusion 1701 and the groove 1801 will also slide against each other. When the collar 18 rotates, the rotating rod 17 will also rotate under the action of the protrusion 1701 and the groove 1801. A first bevel gear 19 is coaxially arranged on the collar 18, and a rotating shaft 20 is horizontally rotatably arranged on the fixed base 16. A second bevel gear 21 and a gear 22 are coaxially arranged at both ends of the rotating shaft 20, and the second bevel gear 21 and the first bevel gear 19 mesh with each other. A toothed plate 23 is vertically arranged on the cabinet 1, and the gear 22 and the toothed plate 23 mesh with each other.

[0040] In this embodiment, in the initial state, the hollow plate 2 is fixed to the top of the cabinet 1 by the locking assembly, the collar 18 and the rotating rod 17 are in a stationary state, the first bevel gear 19 and the second bevel gear 21 are meshed, the gear 22 is meshed with the toothed plate 23, and the entire transmission assembly is in a standby state. When a fire occurs inside cabinet 1, the drive component is activated, and the hollow plate 2 begins to fall freely after losing the support of the locking component. At this time, the fixed seat 16 moves downward along with the hollow plate 2. As the fixed base 16 moves downward, the gear 22 moves downward along the toothed plate 23. Since the gear 22 and the toothed plate 23 mesh with each other, the fixed tooth profile of the toothed plate 23 will drive the gear 22 to rotate. The rotation of the gear 22 transmits power through the rotating shaft 20. The rotation of the rotating shaft 20 causes the second bevel gear 21 to rotate synchronously. Since the second bevel gear 21 meshes with the first bevel gear 19, the rotation of the second bevel gear 21 will drive the first bevel gear 19 to rotate. The rotation of the first bevel gear 19 is fixedly connected to the collar 18 on the same axis, so that the collar 18 also begins to rotate. The rotation of the collar 18 is achieved by the sliding engagement of the groove 1801 on its inner wall with the protrusion 1701 on the outer wall of the rotating rod 17, causing the rotating rod 17 to rotate accordingly.

[0041] Please see Figure 8 The transmission assembly further includes a transmission shaft 24 and a first pulley 25. The transmission shaft 24 is rotatably mounted on the cabinet 1. The first pulley 25 is coaxially mounted on the rotating rod 17. A second pulley 26 is coaxially mounted on the transmission shaft 24. The first pulley 25 and the second pulley 26 are connected by a toothed belt 27. A disc 28 is coaxially mounted on the drive shaft 24. A second protruding rod 2801 is horizontally mounted on the disc 28. The second protruding rod 2801 is in contact with the first protruding rod 1501. When the disc 28 rotates, the second protruding rod 2801 will push the first protruding rod 1501 to deflect at a certain angle and then separate, thereby opening the valve body 15.

[0042] In this embodiment, when the hollow plate 2 falls freely, the transmission assembly is activated. The collar 18 drives the rotating rod 17 to rotate through the cooperation of the protrusion 1701 and groove 1801 of the rotating rod 17. The rotation of the rotating rod 17 drives the first pulley 25 to rotate synchronously. The first pulley 25 transmits the rotational power to the second pulley 26 through the toothed belt 27. The rotation of the second pulley 26 drives the transmission shaft 24 to rotate. The rotation of the transmission shaft 24 drives the disc 28 to rotate synchronously. The second protruding rod 2801 on the disc 28 is in contact with the first protruding rod 1501 on the valve body 15 in the fire extinguishing assembly. When the disc 28 rotates, the second protruding rod 2801 will push the first protruding rod 1501 to deflect at a certain angle. The deflection of the first protruding rod 1501 causes the valve body 15 to rotate, thereby opening the output valve of the fire extinguisher 13, so that the pressurized extinguishing agent in the fire extinguisher 13 is sprayed out from multiple nozzles 201 through the hose 14 and the hollow plate 2 to complete the fire extinguishing action.

[0043] Please see Figure 6 The elastic component includes a sleeve 29 and a slide rod 30. The bottom end of the slide rod 30 is slidably engaged with the top end of the sleeve 29. The sleeve 29 is vertically mounted on the cabinet 1 and located directly below the hollow panel 2. The sleeve 29 is equipped with a second spring 31, the two ends of which abut against the bottom end of the slide rod 30 and the inner bottom of the sleeve 29, respectively.

[0044] In this embodiment, when the locking component releases its restraint on the hollow plate 2, the hollow plate 2 begins to fall freely. Since the elastic component is located directly below the hollow plate 2, the hollow plate 2 will contact the slide rod 30 during its fall. The fall of the hollow plate 2 causes the slide rod 30 to move downward. The slide rod 30 slides vertically within the sleeve 29. The sleeve 29 acts as a guide to ensure that the movement of the slide rod 30 is smooth and vertical. As the slide rod 30 moves downward, the second spring 31 is gradually compressed. The second spring 31 absorbs the kinetic energy of the hollow plate 2 falling through its own elastic deformation, thus playing a buffering role and reducing the impact force of the hollow plate 2 on the bottom of the cabinet 1. Spring 31 stores elastic potential energy during compression. When the hollow plate 2 stops falling, the elastic potential energy of spring 31 begins to be released, pushing the slide bar 30 to move upward, so that the hollow plate 2 obtains an upward reaction force, thereby reducing the impact on the bottom of the cabinet 1.

[0045] A fire extinguishing method for a safety-type high-voltage switchgear utilizing the built-in trigger-type fire extinguishing structure as described above includes the following steps: Step 1: Fire detection and signal transmission. The smoke alarm monitors the internal environment of the cabinet in real time. When smoke is detected, the drive component is immediately activated via an electrical signal. Step 2: Cut off the power and unlock the hollow panel. The micro motor starts and moves the U-shaped panel upward. The push block pushes the lever of the main power switch to cut off the power inside the cabinet. The second trapezoidal block pushes the first trapezoidal block, which moves the stop bar horizontally to release the limit on the hollow panel. The hollow panel begins to fall freely. Step 3: The buffer and transmission components are activated. When the hollow plate falls, the slide rod slides inside the sleeve, the No. 2 spring is compressed, absorbs kinetic energy, and reduces the impact on the bottom of the cabinet. The falling of the hollow plate drives the fixed seat to move, and the collar slides on the outer wall of the rotating rod and drives the rotating rod to rotate. Step 4: Fire extinguishing assembly activation and extinguishing agent spraying. The rotating rod drives the transmission shaft to rotate via the toothed belt. The second convex rod on the disc pushes the first convex rod on the valve body to deflect, opening the valve body. The extinguishing agent in the fire extinguisher is transmitted to the hollow plate through the hose and sprayed out from multiple nozzles to achieve all-round fire extinguishing.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure, comprising a cabinet body (1), a hollow plate (2), a smoke detector (3), and a main power switch (4), characterized in that, The smoke detector (3) and the main power switch (4) are both located on the inner wall of the cabinet (1); The hollow plate (2) is vertically slidably disposed on the front side of the cabinet (1). The cabinet (1) is provided with a locking component that cooperates with the hollow plate (2). The locking component makes the hollow plate (2) stationary at the top of the cabinet (1). Multiple nozzles (201) are uniformly connected along the length direction on the side of the hollow plate (2) near the inside of the cabinet (1). The cabinet (1) is provided with a drive component, which is respectively coordinated with the main power switch (4) and the locking component. When a fire occurs, the smoke alarm (3) will activate the drive component through an electrical signal. The drive component will simultaneously turn off the main power switch (4) and drive the locking component to release the limit on the hollow plate (2), so that the hollow plate (2) will fall freely. The bottom of the cabinet (1) is provided with an elastic component, which is used to buffer the falling hollow plate (2). The bottom of the cabinet (1) is provided with a fire extinguishing component, which is connected to the hollow plate (2). When the fire extinguishing component is activated, the multiple nozzles (201) connected to the hollow plate (2) will spray out fire extinguishing agent. The cabinet (1) is equipped with a transmission component, which is respectively connected to the hollow plate (2) and the fire extinguishing component. When the hollow plate (2) is in free fall, the transmission component will drive the fire extinguishing component to open, thereby realizing the spraying of fire extinguishing agent in all directions inside the cabinet (1). The fire extinguishing assembly includes a fire extinguisher (13) and a hose (14). The fire extinguisher (13) is fixedly installed at the bottom of the cabinet (1), and the hose (14) connects the output end of the fire extinguisher (13) to the hollow plate (2). The fire extinguisher (13) is provided with a valve body (15) at the output end. A first protruding rod (1501) is horizontally provided on the valve body (15). When the first protruding rod (1501) is driven by an external force to rotate the valve body (15), the extinguishing agent pressurized in the fire extinguisher (13) will be sprayed out from multiple nozzles (201) after being guided by the hose (14) and the hollow plate (2). The transmission assembly includes a fixed base (16) and a rotating rod (17). The fixed base (16) is disposed on the hollow plate (2), and the rotating rod (17) is vertically rotatably disposed on the cabinet (1). The fixed base (16) is rotatably provided with a collar (18), and the collar (18) is slidably sleeved on the outer wall of the rotating rod (17). The inner wall of the collar (18) is vertically provided with a groove (1801) along its length direction. The outer wall of the rotating rod (17) is vertically provided with a protrusion (1701) along its length direction. The protrusion (1701) is slidably fitted into the groove (1801). When the hollow plate (2) falls freely, the collar (18) will slide on the outer wall of the rotating rod (17), and the protrusion (1701) and the groove (1801) will also slide against each other. When the collar (18) rotates, the rotating rod (17) will also rotate under the action of the protrusion (1701) and the groove (1801).

2. A safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure according to claim 1, characterized in that, The locking assembly includes a fixing plate (5) and a stop bar (6). The fixing plate (5) is disposed on the cabinet (1), and a horizontal groove (501) is provided on one side of the fixing plate (5). One end of the stop bar (6) abuts against the bottom of the hollow plate (2). A slider (601) is provided on one side of the stop bar (6). The slider (601) is located in the groove (501) and slides in cooperation with each other. The slide groove (501) is provided with a limiting post (502) inside, and a first spring (7) is also provided inside the slide groove (501). The two ends of the first spring (7) abut against the slider (601) and the inner wall of the slide groove (501) respectively, so as to drive the slider (601) to always abut against the limiting post (502), so that when no external force is applied, one end of the stop rod (6) is always located at the bottom of the hollow plate (2), and the other end of the stop rod (6) is provided with a trapezoidal block (8), with the inclined surface of the trapezoidal block (8) facing downward.

3. A safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure according to claim 2, characterized in that, The drive assembly includes a U-shaped plate (9) and a micro motor (10), wherein the U-shaped plate (9) is vertically slidably mounted on the cabinet (1); The micro motor (10) is vertically mounted on the cabinet (1) and electrically connected to the smoke alarm (3). The output end of the micro motor (10) is fixedly connected to the bottom of the U-shaped plate (9).

4. A safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure according to claim 3, characterized in that, The U-shaped plate (9) is provided with a second trapezoidal block (11), the inclined surface of the second trapezoidal block (11) is in contact with the inclined surface of the first trapezoidal block (8). When the second trapezoidal block (11) moves vertically upward, the first trapezoidal block (8) will drive the stop rod (6) to move horizontally away from the hollow plate (2). A push block (12) is provided on the U-shaped plate (9), and the push block (12) is in contact with the lever of the main power switch (4).

5. A safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure according to claim 1, characterized in that, A first bevel gear (19) is coaxially arranged on the collar (18), and a rotating shaft (20) is horizontally rotatably arranged on the fixed seat (16). A second bevel gear (21) and a gear (22) are coaxially arranged at both ends of the rotating shaft (20), and the second bevel gear (21) and the first bevel gear (19) mesh with each other. A toothed plate (23) is vertically arranged on the cabinet (1), and the gear (22) and the toothed plate (23) mesh with each other.

6. A safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure according to claim 1, characterized in that, The transmission assembly also includes a transmission shaft (24) and a first pulley (25). The transmission shaft (24) is rotatably mounted on the cabinet (1). The first pulley (25) is coaxially mounted on the rotating rod (17). A second pulley (26) is coaxially mounted on the transmission shaft (24). The first pulley (25) and the second pulley (26) are connected by a toothed belt (27). A disc (28) is coaxially arranged on the drive shaft (24), and a second protrusion (2801) is horizontally arranged on the disc (28). The second protrusion (2801) is in contact with the first protrusion (1501). When the disc (28) rotates, the second protrusion (2801) will push the first protrusion (1501) to deflect at a certain angle and then separate, thereby opening the valve body (15).

7. A safety high-voltage distribution cabinet with a built-in trigger-type fire extinguishing structure according to claim 1, characterized in that, The elastic component includes a sleeve (29) and a slide rod (30). The bottom end of the slide rod (30) is slidably engaged with the top end of the sleeve (29). The sleeve (29) is vertically mounted on the cabinet (1) and located directly below the hollow plate (2). The sleeve (29) is equipped with a second spring (31), and the two ends of the second spring (31) abut against the bottom end of the slide rod (30) and the inner bottom of the sleeve (29), respectively.

8. A fire extinguishing method for a safety high-voltage distribution cabinet utilizing the built-in trigger-type fire extinguishing structure as described in any one of claims 1-7, characterized in that, Includes the following steps: Step 1: Fire detection and signal transmission. The smoke alarm monitors the internal environment of the cabinet in real time. When smoke is detected, the drive component is immediately activated via an electrical signal. Step 2: Cut off the power and unlock the hollow panel. The micro motor starts and moves the U-shaped panel upward. The push block pushes the lever of the main power switch to cut off the power inside the cabinet. The second trapezoidal block pushes the first trapezoidal block, which moves the stop bar horizontally to release the limit on the hollow panel. The hollow panel begins to fall freely. Step 3: The buffer and transmission components are activated. When the hollow plate falls, the slide rod slides inside the sleeve, the No. 2 spring is compressed, absorbs kinetic energy, and reduces the impact on the bottom of the cabinet. The falling of the hollow plate drives the fixed seat to move, and the collar slides on the outer wall of the rotating rod and drives the rotating rod to rotate. Step 4: Fire extinguishing assembly activation and extinguishing agent spraying. The rotating rod drives the transmission shaft to rotate via the toothed belt. The second convex rod on the disc pushes the first convex rod on the valve body to deflect, opening the valve body. The extinguishing agent in the fire extinguisher is transmitted to the hollow plate through the hose and sprayed out from multiple nozzles to achieve all-round fire extinguishing.

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