Power distribution cabinet

Abstract

The invention discloses a power distribution cabinet, relates to the field of power distribution cabinets, and solves the problem that a fire is difficult to extinguish quickly when the interior of an existing power distribution cabinet is on fire, the power distribution cabinet comprises a cabinet body and a U-shaped mounting frame fixedly mounted at the top of the cabinet body, and two fire extinguisher cylinders which are symmetrically distributed are fixedly mounted on the inner side of the U-shaped mounting frame; two spray pipes which are distributed in a central symmetry mode are arranged below the U-shaped mounting frame, the two spray pipes are in butt joint with the two fire extinguisher cylinders through hoses correspondingly, and breathable filter plates are fixedly mounted on the two sides of the cabinet body correspondingly; the fire extinguishing mechanism is used for rapidly extinguishing fire of electrical equipment in the cabinet body, and the fire extinguishing mechanism is mounted on the inner side of the U-shaped mounting frame; through the fire extinguishing mechanism, the two spray pipes rapidly extinguish fire of the electrical equipment from top to bottom, and the two spray pipes are in a crossed reciprocating swing state, so that rapid fire extinguishing of the multiple electrical equipment is facilitated, the problem of fire point shielding caused by the multiple electrical equipment is solved, and the effect of rapid fire extinguishing is achieved.

Description

Technical Field

[0001] The invention relates to the field of power distribution cabinets, in particular to a power distribution cabinet. Background Art

[0002] ‌Distribution cabinet is the final equipment of the power distribution system, mainly used for power distribution, control and protection. It is usually installed in places with dispersed loads and fewer circuits, such as residential buildings, schools and hospitals. It is responsible for distributing power to nearby loads and providing overload, short circuit and leakage protection. It contains a variety of electrical equipment, such as air switches, circuit breakers, fuses, indicator lights, meters, etc. These components are assembled in closed or semi-closed metal cabinets to achieve the functions of power distribution, control, metering and connecting cables. The use of distribution cabinets not only improves the convenience of electricity use, but also facilitates maintenance and inspection.

[0003] When the current in the wires in the distribution box exceeds its carrying capacity, the temperature of the wires will rise, causing the insulation layer to age or even burn, thereby causing a fire. It is necessary to promptly cut off the power supply to the distribution box and extinguish the fire. The existing Chinese public patent document: CN114243515B discloses a distribution cabinet, and the detection device continuously detects whether there is a fire inside the distribution cabinet, and transmits the detection data to the control device. When the detection device detects the detection data of the fire in the distribution cabinet, the control device receives the detection data of the fire in the distribution cabinet, and the control device can control the fire extinguishing device to open according to the detection data to extinguish the fire inside the distribution cabinet, thereby ensuring that when a fire occurs inside the distribution cabinet, it can automatically extinguish the fire inside, thereby avoiding the occurrence of major safety accidents. However, the fire extinguisher is located on one side of the distribution cabinet, and can only extinguish the fire on one side of the electrical equipment. Since there are multiple electrical equipment installed in the distribution cabinet, there will be a certain shielding of the fire point, and the fire extinguisher set on one side is difficult to quickly extinguish the fire point. Summary of the invention

[0004] The purpose of the present invention is to provide a power distribution cabinet, which enables two nozzles to quickly extinguish fire on electrical equipment from top to bottom, and enables the two nozzles to be in a cross-reciprocating swinging state, so as to facilitate rapid fire extinguishing of multiple electrical equipment and achieve the effect of rapid fire extinguishing.

[0005] To achieve the above object, the present invention provides the following technical solutions: A power distribution cabinet comprises: a cabinet body and a U-shaped mounting frame fixedly mounted on the top of the cabinet body, two symmetrically distributed fire extinguisher cylinders are fixedly mounted on the inner side of the U-shaped mounting frame, two centrally symmetrically distributed nozzles are arranged below the U-shaped mounting frame, the two nozzles are respectively connected to the two fire extinguisher cylinders through hoses, and breathable filter plates are fixedly mounted on both sides of the cabinet body for ventilation and heat dissipation of electrical equipment in the cabinet body; it also comprises: a fire extinguishing mechanism for quickly extinguishing a fire of the electrical equipment in the cabinet body, the fire extinguishing mechanism being mounted on the inner side of the U-shaped mounting frame; a protective mechanism for cooling the inner side of the cabinet body, the protective mechanism being mounted on the bottom of the U-shaped mounting frame; an oxygen blocking mechanism for quickly sealing the air holes of the breathable filter plate, the oxygen blocking mechanism being mounted on the inner side of the cabinet body.

[0006] Preferably, the fire extinguishing mechanism includes a positioning frame fixedly mounted on the inner wall of the bottom of the U-shaped mounting frame, a driving motor is fixedly mounted on the top of the positioning frame, a rotating disk is fixedly mounted on the output end of the driving motor, the rotating disk is located below the positioning frame, a rack plate 1 is fixedly mounted on the top of the nozzle, the top of the rack plate 1 is in contact with the bottom of the positioning frame, four arc-shaped racks symmetrically distributed in the center are fixedly mounted on the outer side of the rotating disk, the arc-shaped racks cooperate with the rack plate 1, so that when the arc-shaped racks are in contact with the rack plate 1, they can drive the rack plate 1 to move, and the positioning frame Two sliding rods are provided at the bottom, which slide through the rack plate 1 respectively, and provide guidance for the movement of the rack plate 1. Support plates are fixedly installed between the two ends of the sliding rod and the bottom of the positioning frame. A spring 1 is provided on the outer side of the sliding rod. The spring 1 is fixedly installed between the support plate and the rack plate 1, so that the spring 1 can push the rack plate 1 to reset. The number of teeth of the arc-shaped rack is the same as the number of teeth on the rack plate 1, so that the four arc-shaped racks can drive the rack plate 1 to move intermittently. A plurality of discharge nozzles distributed equidistantly are provided at the bottom of the nozzle for spraying and extinguishing fire on electrical equipment.

[0007] Preferably, the protection mechanism includes two U-shaped plates symmetrically fixedly installed on the bottom of the positioning frame, a rack plate 2 is fixedly installed on the bottom of the U-shaped plate, a positioning cylinder for rotatably installing the discharge nozzle is provided at the bottom of the nozzle pipe, a gear ring is fixedly installed on the outer side of the discharge nozzle, the gear ring cooperates with the rack plate 2 so that when the gear ring moves along the rack plate 2, the gear ring can drive the discharge nozzle to rotate, and positioning rings are provided on the top and bottom of the gear ring, the positioning rings are fixedly installed on the outer side of the discharge nozzle, and the distance between the two positioning rings is The heights of the teeth on the rack plate 2 are the same, and the positioning ring can move along the teeth on the rack plate 2 to ensure the normal rotation of the gear ring. The bottom of the discharge nozzle is a truncated cone structure, and a plurality of auxiliary nozzles symmetrically distributed in the center are fixedly installed at the bottom of the discharge nozzle. The auxiliary nozzle is an inclined structure. The inside of the fire extinguisher cylinder on the left side of the U-shaped mounting frame is dry powder, which is convenient for rapid fire extinguishing of electrical equipment. The inside of the fire extinguisher cylinder on the right side of the U-shaped mounting frame is carbon dioxide, so that the auxiliary nozzle can spray carbon dioxide on the inside of the cabinet, which can cool the inside of the cabinet.

[0008] Preferably, the oxygen-blocking mechanism comprises a baffle arranged on the inner side of the air-permeable filter plate, the outer side of the baffle is provided with a plurality of air holes corresponding to the filter holes on the surface of the air-permeable filter plate, the top and bottom of the baffle are provided with slide plates, the inner side of the cabinet is provided with a sliding cavity for the limited sliding of the baffle and the slide plate, so as to facilitate the movement of the baffle, so that when the air holes on the baffle are staggered with the filter holes of the air-permeable filter plate, they can provide sealing for the air-permeable filter plate, and the top of the slide plate located on the top of the baffle is fixedly installed with two symmetrically distributed springs 2, and an electromagnet is arranged between the two springs 2, which can adsorb adjacent slide plates when energized, and the electromagnet is fixedly installed Installed in the sliding cavity of the cabinet, when the cabinet is powered off, the electromagnet can stop adsorbing the slide, two symmetrically distributed installation boxes are arranged on the outer side of the baffle, the installation box is fixedly installed on the inner side of the cabinet, an arc-shaped resistance block is slidably installed on the inner side of the installation box, a spring three is fixedly installed between the arc-shaped resistance block and the inner side of the installation box, and the elasticity of the spring three is utilized to enable the arc-shaped resistance block to resist the outer side of the baffle, and two symmetrically distributed arc-shaped top blocks are fixedly installed on one side of the baffle close to the installation box, the arc-shaped top block is in contact with the outer side of the arc-shaped resistance block, so that the arc-shaped top block can push the arc-shaped resistance block to move along the inner side of the installation box when moving.

[0009] Preferably, a battery is fixedly mounted on the top of the positioning frame, and the battery is connected to the drive motor through the positioning frame, so that the battery can start the drive motor when the cabinet is powered off.

[0010] Preferably, a heat shield is provided on the outside of the battery, and the heat shield is fixedly mounted on the top of the positioning frame to provide protection for the battery and ensure that the battery can normally supply power to the drive motor.

[0011] Preferably, two smoke sensors equidistantly distributed are fixedly mounted on the bottom of the U-shaped mounting frame to monitor the cabinet in real time, so as to facilitate timely activation of the fire extinguisher cylinder to extinguish the fire of the electrical equipment in the cabinet.

[0012] Preferably, the baffle is provided with protrusions on the top and bottom, the outer side of the slide plate is provided with a slide groove for limiting the sliding of the protrusion, a plurality of equidistantly distributed support rods are fixedly installed on the inner side of the slide groove, the support rods slide through the protrusions, so that the slide plate can push the baffle to move and facilitate the contact between the baffle and the breathable filter plate.

[0013] Preferably, a rubber patch is fixedly mounted on one side of the baffle plate close to the breathable filter plate, and the outer side of the rubber patch is in contact with the outer side of the breathable filter plate, thereby improving the sealing performance of the baffle plate to the breathable filter plate.

[0014] Preferably, a guide rod is fixedly installed on the inner side of the installation box, and a guide hole for limiting and inserting the guide rod is opened at one end of the arc-shaped resistance block close to the spring three, so as to facilitate the arc-shaped resistance block to move smoothly along the inner side of the installation box and provide support for the arc-shaped resistance block when the arc-shaped resistance block contacts the arc-shaped top block.

[0015] The above embodiments of the present invention can achieve the following beneficial effects: The present invention uses a fire extinguishing mechanism to enable two nozzles to quickly extinguish the electrical equipment from top to bottom when a fire occurs in the cabinet, and the two nozzles are in a cross-reciprocating swinging state, which is convenient for quickly extinguishing a plurality of electrical equipment, and solves the problem of blocking the fire point caused by a plurality of electrical equipment, thereby achieving the effect of quickly extinguishing the fire.

[0016] The present invention uses a protective mechanism to rotate the discharge nozzle during the movement of the nozzle pipe, and sprays carbon dioxide on the inside of the cabinet through the auxiliary nozzle. By utilizing the principle of heat absorption during gasification of liquid carbon dioxide, the inside of the cabinet can be quickly cooled, making it easier for staff to open the cabinet safely, thereby achieving the effect of improving the safety of subsequent inspections.

[0017] The present invention uses an oxygen blocking mechanism, which can make the baffle move downward along the outer side of the air permeable filter plate when the power is cut off in the cabinet, so that the air holes on the baffle plate and the filter holes on the air permeable filter plate can be staggered, so that the baffle plate can seal the air permeable filter plate to prevent external oxygen from entering the cabinet, thereby improving the fire extinguishing efficiency of the cabinet and preventing smoke from escaping, thereby achieving the effect of safe fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the U-shaped mounting frame and the nozzle structure of the present invention; Figure 3 It is a schematic diagram of the structure of the U-shaped plate and the positioning frame in the present invention; Figure 4 It is a schematic diagram of the structure of the turntable and the arc-shaped rack in the present invention; Figure 5 It is a schematic diagram of the structure of the discharge nozzle and the positioning ring in the present invention; Figure 6 It is a schematic diagram of the structure of the baffle plate and the air permeable filter plate in the present invention; Figure 7 for Figure 6 Schematic diagram of the enlarged structure of the middle A area; Figure 8 It is a schematic diagram of the structure of the rubber plate and the skateboard in the present invention.

[0019] In the figure: 1. cabinet; 2. U-shaped mounting frame; 3. fire extinguisher cylinder; 4. nozzle; 5. air filter plate; 6. positioning frame; 7. drive motor; 8. turntable; 9. rack plate 1; 10. arc rack; 11. slide bar; 12. support plate; 13. spring 1; 14. discharge nozzle; 15. U-shaped plate; 16. rack plate 2; 17. positioning cylinder; 18. gear ring; 19. positioning ring; 20. auxiliary nozzle; 21. baffle; 22. slide plate; 23. spring 2; 24. electromagnet; 25. mounting box; 26. arc stop block; 27. spring 3; 28. arc top block; 29. ​​battery; 30. heat shield; 31. smoke sensor; 32. support rod; 33. rubber patch; 34. guide rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1-Figure 8A distribution cabinet shown in the figure includes a cabinet 1 and a U-shaped mounting frame 2 fixedly installed on the top of the cabinet 1, two symmetrically distributed fire extinguisher cylinders 3 are fixedly installed on the inner side of the U-shaped mounting frame 2, and two centrally symmetrically distributed nozzles 4 are arranged below the U-shaped mounting frame 2. The two nozzles 4 are respectively connected to the two fire extinguisher cylinders 3 through hoses, and breathable filter plates 5 are fixedly installed on both sides of the cabinet 1 for ventilation and heat dissipation of electrical equipment in the cabinet 1; it also includes: a fire extinguishing mechanism for quickly extinguishing a fire of the electrical equipment in the cabinet 1, and the fire extinguishing mechanism is installed on the inner side of the U-shaped mounting frame 2; a protective mechanism for cooling the inner side of the cabinet 1, and the protective mechanism is installed at the bottom of the U-shaped mounting frame 2; an oxygen blocking mechanism for quickly sealing the air holes of the breathable filter plate 5, and the oxygen blocking mechanism is installed on the inner side of the cabinet 1.

[0022] The fire extinguishing mechanism includes a positioning frame 6 fixedly mounted on the inner wall of the bottom of the U-shaped mounting frame 2, a driving motor 7 is fixedly mounted on the top of the positioning frame 6, and a battery 29 is fixedly mounted on the top of the positioning frame 6. The battery 29 is connected to the driving motor 7 through the positioning frame 6, so that when the cabinet 1 is powered off, the battery 29 can start the driving motor 7 to ensure the normal operation of the driving motor 7. A heat insulation cover 30 is arranged on the outside of the battery 29, and the heat insulation cover 30 is fixedly mounted on the top of the positioning frame 6 to provide protection for the battery 29 to ensure that the battery 29 can normally supply power to the driving motor 7. Two smoke sensors 31 distributed equidistantly are fixedly mounted on the bottom of the U-shaped mounting frame 2 to monitor the cabinet 1 in real time, so as to facilitate timely starting of the fire extinguisher cylinder 3, the battery 29 and the driving motor 7 to extinguish the electrical equipment in the cabinet 1. A turntable 8 is fixedly mounted on the output end of the driving motor 7, and the turntable 8 is located below the positioning frame 6. A rack plate 9 is fixedly mounted on the top of the nozzle 4. The top of the rack plate 9 contacts the bottom of the positioning frame 6. Four arc-shaped racks 10 are fixedly installed on the outer side of the turntable 8 and are symmetrically distributed. The arc-shaped racks 10 cooperate with the rack plate 9 so that when the arc-shaped racks 10 contact the rack plate 9, they can drive the rack plate 9 to move. Two slide bars 11 are provided at the bottom of the positioning frame 6, which slide through the rack plate 9 respectively. The slide bars 11 provide guidance for the movement of the rack plate 9. The two ends of the slide bars 11 are in contact with the bottom of the positioning frame 6. A support plate 12 is fixedly installed between the parts, a spring 13 is arranged on the outer side of the slide bar 11, and the spring 13 is fixedly installed between the support plate 12 and the rack plate 9, so that the spring 13 can push the rack plate 9 to reset, and the number of teeth of the arc-shaped rack 10 is the same as the number of teeth on the rack plate 9, so that the four arc-shaped racks 10 can drive the rack plate 9 to move intermittently, and a plurality of equally spaced discharge nozzles 14 are arranged at the bottom of the nozzle 4 for spraying and extinguishing the electrical equipment; The smoke sensor 31 can monitor the cabinet 1 in real time. When the electrical equipment catches fire, the smoke sensor 31 turns on the battery 29 and the fire extinguisher cylinder 3. The battery 29 can power the drive motor 7. The drive motor 7 drives the four arc-shaped racks 10 to make circular motion through the turntable 8, so that the arc-shaped rack 10 drives the rack plate 9 to move along the outer side of the slide rod 11, and the rack plate 9 drives the nozzle 4 to move synchronously and compress the spring 13. When the arc-shaped rack 10 is away from the rack plate 9, the rebound force of the spring 13 is used to push the rack plate 9 to reset. Therefore, with the rotation of the four arc-shaped racks 10, the two rack plates 9 can be in a state of cross-reciprocating movement, so that the discharge nozzle 14 on the nozzle 4 evenly extinguishes the electrical equipment, solves the problem of blocking the fire point caused by multiple electrical equipment, and thus achieves the effect of rapid fire extinguishing.

[0023] The protection mechanism includes two U-shaped plates 15 symmetrically fixedly installed at the bottom of the positioning frame 6, a rack plate 16 is fixedly installed at the bottom of the U-shaped plate 15, a positioning cylinder 17 for the rotatable installation of the discharge nozzle 14 is provided at the bottom of the nozzle 4, a gear ring 18 is fixedly installed on the outer side of the discharge nozzle 14, the gear ring 18 cooperates with the rack plate 16, so that when the gear ring 18 moves along the rack plate 16, the gear ring 18 can drive the discharge nozzle 14 to rotate, and a positioning ring 19 is provided on the top and bottom of the gear ring 18, and the positioning ring 19 is fixedly installed on the outer side of the discharge nozzle 14, and the distance between the two positioning rings 19 is equal to the distance between the rack plate 16. The heights of the upper teeth are the same, and the positioning ring 19 can move along the teeth on the rack plate 16 to ensure the normal rotation of the gear ring 18 and prevent the gear ring 18 from being separated from the rack plate 16. The bottom of the discharge nozzle 14 is a truncated cone structure, and a plurality of auxiliary nozzles 20 are fixedly installed at the bottom of the discharge nozzle 14 and are distributed symmetrically with respect to the center. The auxiliary nozzles 20 are inclined structures. The fire extinguisher cylinder 3 on the left side of the U-shaped mounting frame 2 contains dry powder, which is convenient for quickly extinguishing fires of electrical equipment. The fire extinguisher cylinder 3 on the right side of the U-shaped mounting frame 2 contains carbon dioxide, so that the auxiliary nozzles 20 can spray carbon dioxide on the inner side of the cabinet 1, which can cool the inner side of the cabinet 1; When the discharge nozzle 14 moves, it can drive the gear ring 18 to move along the rack plate 16, so that the gear ring 18 drives the discharge nozzle 14 to rotate, and the discharge nozzle 14 can rotate along the inner side of the positioning tube 17, so that the discharge nozzle 14 drives multiple auxiliary nozzles 20 to rotate synchronously, and the auxiliary nozzles 20 can spray carbon dioxide and dry powder on the inner side of the cabinet 1. By utilizing the principle of heat absorption by gasification of liquefied carbon dioxide, the inner side of the cabinet 1 can be quickly cooled down, which is convenient for the staff to safely open the cabinet 1, thereby achieving the effect of improving the safety of later inspections.

[0024] Working principle: When the electrical equipment in the cabinet 1 catches fire, the smoke sensor 31 is activated, so that the smoke sensor 31 opens the battery 29 and the fire extinguisher cylinder 3, and the battery 29 supplies power to the drive motor 7, so that the drive motor 7 drives the turntable 8 to rotate, and the turntable 8 drives the four arc-shaped racks 10 to make circular motions. When any arc-shaped rack 10 contacts the rack plate 9, the arc-shaped rack 10 drives the rack plate 9 to move along the outer side of the slide bar 11 and the bottom of the positioning frame 6, so that the rack plate 9 compresses the spring 13. At the same time, the rack plate 9 drives the nozzle 4 to move synchronously. At this time, the arc-shaped rack 10 is away from the rack plate 9, and the rebound force of the spring 13 is used to push the rack plate 9 to reset along the outer side of the slide bar 11. Then, the next arc-shaped rack 10 contacts the rack plate 9. The arc-shaped rack 10 drives the rack plate 19 to move again. As a result, with the rotation of the four arc-shaped racks 10, the two rack plates 19 make a cross reciprocating movement. The nozzle 4 evenly sprays dry powder and carbon dioxide on the electrical equipment from top to bottom through the discharge nozzle 14, so as to achieve timely fire extinguishing of the electrical equipment. At the same time, the discharge nozzle 14 drives the gear ring 18 to move along the teeth on the rack plate 16, so that the discharge nozzle 14 is in a rotating state during the movement. The discharge nozzle 14 drives the auxiliary nozzle 20 to move synchronously, so that the auxiliary nozzle 20 sprays carbon dioxide and dry powder evenly on the inner side of the cabinet 1. The carbon dioxide absorbs the heat inside the cabinet 1, so that the cabinet 1 cools down quickly, which is convenient for the staff to safely open the cabinet 1, thereby achieving the effect of rapid fire extinguishing and safe maintenance.

[0025] Example 2: Please refer to Figure 1-Figure 8, this embodiment further explains the first embodiment, the oxygen blocking mechanism in the figure includes a baffle 21 arranged on the inner side of the air-permeable filter plate 5, and a plurality of air holes corresponding to the filter holes on the surface of the air-permeable filter plate 5 are provided on the outer side of the baffle 21, and a slide plate 22 is provided on the top and bottom of the baffle 21, and the slide plate 22 is made of metal. A sliding cavity for limiting the sliding of the baffle 21 and the slide plate 22 is provided on the inner side of the cabinet 1, so that the baffle 21 can be moved to facilitate the movement of the baffle 21, so that when the air holes on the baffle 21 are staggered with the filter holes of the air-permeable filter plate 5, the air-permeable filter plate 5 can be provided with a seal, and two symmetrically distributed springs 23 are fixedly installed on the top of the slide plate 22 located on the top of the baffle 21, and an electromagnet 24 is provided between the two springs 23, and the electromagnet 24 can adsorb the adjacent slide plates 22 when energized. The electromagnet 24 is fixedly installed in the sliding cavity of the cabinet 1. When the cabinet 1 is powered off, the electromagnet 24 can stop adsorbing the slide plate 22. Two symmetrically distributed installation boxes 25 are arranged on the outer side of the baffle 21. The installation box 25 is fixedly installed on the inner side of the cabinet 1. An arc-shaped stop block 26 is slidably installed on the inner side of the installation box 25. A spring three 27 is fixedly installed between the arc-shaped stop block 26 and the inner side of the installation box 25. By utilizing the elasticity of the spring three 27, the arc-shaped stop block 26 can be pressed against the outer side of the baffle 21. Two symmetrically distributed arc-shaped top blocks 28 are fixedly installed on one side of the baffle 21 close to the installation box 25. The arc-shaped top block 28 is in contact with the outer side of the arc-shaped stop block 26, so that the arc-shaped top block 28 can push the arc-shaped stop block 26 to move along the inner side of the installation box 25 when it moves.

[0026] In this embodiment: when the cabinet 1 is on fire and the power is cut off, the power supply to the electromagnet 24 is stopped, the electromagnet 24 stops adsorbing the slide plate 22, and the rebound force of the two springs 23 is used to push the slide plate 22 to move downward. The slide plate 22 drives the baffle 21 to move along the outer side of the breathable filter plate 5, so that the air holes on the baffle 21 are staggered with the filter holes on the breathable filter plate 5, and the baffle 21 can block the filter holes of the breathable filter plate 5. At the same time, the baffle 21 drives the arc-shaped top block 28 to move synchronously, so that the arc-shaped top block 28 is away from the arc-shaped resistance block 26, and the rebound force of the spring three 27 is used to make the spring three 27 push the arc-shaped resistance block 26 to contact the outer side of the baffle 21, providing thrust for the baffle 21, ensuring that the baffle 21 is sealed to the breathable filter plate 5, preventing external oxygen from entering the cabinet 1, improving the fire extinguishing efficiency of the cabinet 1, and preventing smoke from dispersing, thereby achieving the effect of safe fire extinguishing.

[0027] Example 3: Please refer to Figure 7 and Figure 8, this embodiment further illustrates other embodiments, the baffle 21 shown in the figure is provided with protrusions on the top and bottom, and the outer side of the slide plate 22 is provided with a slide groove for the protrusion to limit the sliding, so that the arc-shaped stopper 26 pushes the baffle 21, and a plurality of equally distributed support rods 32 are fixedly installed on the inner side of the slide groove, and the support rod 32 slides through the protrusion, so that the support rod 32 installs the baffle 21 between the two slide plates 22 through the protrusion, so that the slide plate 22 can push the baffle 21 to move, and facilitate the contact between the baffle 21 and the air permeable filter plate 5, and the baffle A rubber patch 33 is fixedly installed on one side of 21 close to the breathable filter plate 5, and the outer side of the rubber patch 33 contacts the outer side of the breathable filter plate 5 to improve the sealing performance of the baffle 21 to the breathable filter plate 5. A guide rod 34 is fixedly installed on the inner side of the installation box 25, and a guide hole for limiting and inserting the guide rod 34 is provided on one end of the arc-shaped stop block 26 close to the spring three 27, so that the arc-shaped stop block 26 can move smoothly along the inner side of the installation box 25 and provide support for the arc-shaped stop block 26 when the arc-shaped stop block 26 contacts the arc-shaped top block 28.

[0028] In this embodiment: when the baffle 21 moves downward, the arc-shaped top block 28 can move away from the arc-shaped resisting block 26, and the rebound force of the spring three 27 is used to push the arc-shaped resisting block 26 to move along the inner side of the installation box 25 and the outer side of the guide rod 34. The arc-shaped resisting block 26 can resist the outer side of the baffle 21, so that the baffle 21 drives the convex strip to move along the inner side of the slide plate 22 and the outer side of the support rod 32. The elasticity of the rubber patch 33 is used to improve the sealing performance of the baffle 21 to the breathable filter plate 5, prevent air leakage, and facilitate rapid fire extinguishing.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power distribution cabinet, characterized in that: include: A cabinet (1) and a U-shaped mounting frame (2) fixedly mounted on the top of the cabinet (1); two symmetrically distributed fire extinguisher cylinders (3) are fixedly mounted on the inner side of the U-shaped mounting frame (2); two centrally symmetrically distributed nozzles (4) are arranged below the U-shaped mounting frame (2); the two nozzles (4) are respectively connected to the two fire extinguisher cylinders (3) through hoses; and air permeable filter plates (5) are fixedly mounted on both sides of the cabinet (1); Also includes: A fire extinguishing mechanism, used for quickly extinguishing a fire in the electrical equipment in the cabinet (1), the fire extinguishing mechanism being installed on the inner side of the U-shaped mounting frame (2); A protection mechanism, used for cooling the inner side of the cabinet (1), the protection mechanism being mounted on the bottom of the U-shaped mounting frame (2); An oxygen barrier mechanism is used for quickly sealing the air holes of the air permeable filter plate (5), and the oxygen barrier mechanism is installed on the inner side of the cabinet (1).

2. A power distribution cabinet according to claim 1, characterized in that: The fire extinguishing mechanism comprises a positioning frame (6) fixedly mounted on the inner wall of the bottom of the U-shaped mounting frame (2), a driving motor (7) fixedly mounted on the top of the positioning frame (6), a rotating disk (8) fixedly mounted on the output end of the driving motor (7), the rotating disk (8) being located below the positioning frame (6), a rack plate (9) fixedly mounted on the top of the nozzle (4), four arc-shaped racks (10) symmetrically distributed on the outside of the rotating disk (8), the arc-shaped racks (10) being symmetrically distributed on the outside of the rotating disk (8), the arc-shaped racks (10) being symmetrically distributed on the outside of the rotating disk (8), the arc-shaped racks (10) being symmetrically distributed on the inside ... The rack plate (9) cooperates with the rack plate (9), and two slide bars (11) are provided at the bottom of the positioning frame (6) and slide through the rack plate (9) respectively. Support plates (12) are fixedly installed between the two ends of the slide bars (11) and the bottom of the positioning frame (6). A spring (13) is provided on the outer side of the slide bar (11), and the spring (13) is fixedly installed between the support plate (12) and the rack plate (9). The bottom of the nozzle (4) is provided with a plurality of discharge nozzles (14) distributed at equal intervals.

3. A power distribution cabinet according to claim 2, characterized in that: The protection mechanism comprises two U-shaped plates (15) symmetrically fixedly mounted on the bottom of the positioning frame (6), a rack plate (16) being fixedly mounted on the bottom of the U-shaped plate (15), a positioning cylinder (17) for rotatably mounting the discharge nozzle (14) being provided at the bottom of the nozzle pipe (4), a gear ring (18) being fixedly mounted on the outer side of the discharge nozzle (14), the gear ring (18) being matched with the rack plate (16), a positioning ring (19) being provided on the top and bottom of the gear ring (18), the positioning ring (19) being fixedly mounted on the outer side of the discharge nozzle (14), The discharge nozzle (14) is fixedly mounted on the outside of the discharge nozzle (14), the distance between the two positioning rings (19) is the same as the height of the teeth on the second rack plate (16), the bottom of the discharge nozzle (14) is a truncated cone structure, and a plurality of auxiliary nozzles (20) are fixedly mounted on the bottom of the discharge nozzle (14) and are distributed symmetrically with respect to the center, and the auxiliary nozzles (20) are inclined structures. The inside of the fire extinguisher cylinder (3) on the left side of the U-shaped mounting frame (2) is dry powder, and the inside of the fire extinguisher cylinder (3) on the right side of the U-shaped mounting frame (2) is carbon dioxide.

4. A power distribution cabinet according to claim 3, characterized in that: The oxygen blocking mechanism comprises a baffle (21) arranged on the inner side of the air permeable filter plate (5), a plurality of air holes corresponding to the filter holes on the surface of the air permeable filter plate (5) are provided on the outer side of the baffle (21), a slide plate (22) is provided on the top and bottom of the baffle (21), a slide cavity for limiting the sliding of the baffle (21) and the slide plate (22) is provided on the inner side of the cabinet (1), two symmetrically distributed springs (23) are fixedly installed on the top of the slide plate (22) located on the top of the baffle (21), an electromagnet (24) is provided between the two springs (23), and the electromagnet (24) ) is fixedly installed in the sliding cavity of the cabinet (1), two symmetrically distributed installation boxes (25) are arranged on the outer side of the baffle (21), the installation box (25) is fixedly installed on the inner side of the cabinet (1), an arc-shaped stop block (26) is slidably installed on the inner side of the installation box (25), a spring three (27) is fixedly installed between the arc-shaped stop block (26) and the inner side of the installation box (25), and two symmetrically distributed arc-shaped top blocks (28) are fixedly installed on the side of the baffle (21) close to the installation box (25), and the arc-shaped top block (28) is in contact with the outer side of the arc-shaped stop block (26).

5. A power distribution cabinet according to claim 2, characterized in that: A storage battery (29) is fixedly mounted on the top of the positioning frame (6), and the storage battery (29) is connected to the driving motor (7) through the positioning frame (6).

6. A power distribution cabinet according to claim 5, characterized in that: A heat insulation cover (30) is provided on the outside of the storage battery (29), and the heat insulation cover (30) is fixedly mounted on the top of the positioning frame (6).

7. A power distribution cabinet according to claim 2, characterized in that: Two smoke sensors (31) distributed at equal distances are fixedly mounted on the bottom of the U-shaped mounting frame (2).

8. A power distribution cabinet according to claim 4, characterized in that: The baffle (21) is provided with a protrusion at the top and bottom, the slide plate (22) is provided with a slide groove for limiting the sliding of the protrusion, and a plurality of support rods (32) distributed at equal distances are fixedly mounted on the inside of the slide groove, and the support rods (32) slide through the protrusion.

9. A power distribution cabinet according to claim 4, characterized in that: A rubber patch (33) is fixedly mounted on one side of the baffle plate (21) close to the air permeable filter plate (5), and the outer side of the rubber patch (33) is in contact with the outer side of the air permeable filter plate (5).

10. A power distribution cabinet according to claim 4, characterized in that: A guide rod (34) is fixedly mounted on the inner side of the installation box (25), and a guide hole for limiting insertion of the guide rod (34) is formed at one end of the arc-shaped stop block (26) close to the spring three (27).

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