Enclosed power distribution cabinet with automatic power-off fire extinguishing function

Abstract

The invention relates to the technical field of power distribution cabinets, in particular to a closed power distribution cabinet with an automatic power-off fire extinguishing function, which comprises a power distribution cabinet main body, one side of the power distribution cabinet main body is connected with a plurality of cover plates through hinges, and one side of the power distribution cabinet main body is fixedly provided with a fire extinguishing agent raw material box. And the fire extinguishing agent raw material box is connected with a conveying pump through a pipeline. The power distribution cabinet has the advantages that the interior of the power distribution cabinet main body is divided into a plurality of areas through the plurality of partition plate structures and the plurality of cover plates, and a plurality of electrical elements are separately placed, so that the influence on the electrical elements in other areas when the electrical elements in a certain area are on fire is greatly avoided; and through cooperative arrangement of a fire extinguishing agent raw material box, a conveying pump, a flow dividing pipe, a spray head, a PLC, a circuit breaker, a temperature sensor, a smoke sensor and an audible and visual alarm, power-off and fire extinguishing operation can be automatically and timely carried out when a fire occurs, and the conditions of electrical element combustion and fire spreading are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, in particular to a closed power distribution cabinet with automatic power-off and fire-extinguishing functions. Background Art

[0002] The distribution cabinet (box) is divided into power distribution cabinet (box), lighting distribution cabinet (box), and metering cabinet (box). It is the final equipment of the power distribution system. The distribution cabinet is a general term for the motor control center. The distribution cabinet is used in places where the load is relatively dispersed and there are fewer circuits; the motor control center is used in places where the load is concentrated and there are more circuits. They distribute the power of a circuit of the upper-level distribution equipment to the nearest load. This level of equipment should provide protection, monitoring and control for the load.

[0003] Current distribution cabinets still have certain limitations. Most distribution cabinets rely on manual inspections to discover potential fire hazards. This method has obvious lags and cannot detect and take measures in time at the early stage of a fire. Although some distribution cabinets are equipped with some basic fire-fighting equipment, such as dry powder fire extinguishers or foam fire extinguishers, these equipment usually require manual operation and have limited fire-fighting effects. It is difficult to quickly control the fire when a fire occurs. In addition, when a fire occurs, the power supply of the distribution cabinet cannot be cut off in time, which will cause the electrical equipment to continue to burn, aggravate the spread of the fire, and even cause explosions and other serious consequences. Therefore, a closed distribution cabinet with automatic power-off and fire-extinguishing functions is needed to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a closed power distribution cabinet with an automatic power-off and fire-extinguishing function, which solves the problems existing in the prior art.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a closed power distribution cabinet with automatic power-off fire extinguishing function, comprising a power distribution cabinet body, one side of the power distribution cabinet body is connected with several cover plates by a hinge, one side of the power distribution cabinet body is fixedly installed with a fire extinguishing agent raw material box, the fire extinguishing agent raw material box is connected with a delivery pump by a pipeline, the delivery pump is fixedly connected with a shunt pipe by a pipeline, and the outer surface of the shunt pipe is fixedly installed with several nozzles, several mounting brackets are arranged inside the power distribution cabinet body, several of the mounting brackets are installed with electrical components, a PLC controller and a circuit breaker are fixedly installed on one side inside the power distribution cabinet body, several connection card slots are opened on one side inside the power distribution cabinet body, several fixed slots are opened on the side of the power distribution cabinet body away from the connection card slots, partition structures are arranged between several of the connection card slots and several of the fixed slots, several of the partition structures are arranged with temperature sensors and smoke sensors, and an audible and visual alarm is fixedly installed on the top side of the power distribution cabinet body.

[0008] Preferably, the partition structure includes a connecting block, a partition, a receiving groove, a movable partition, a fixed plug rod, a through groove, a mounting hole, a fixed spring and a supporting guide rod, the connecting slot is internally clamped with a connecting block, one side of the connecting block is fixedly connected to a partition, one side of the partition is provided with a receiving groove, the inner wall of the storage groove is slidably connected with a movable partition, one side of the movable partition is fixedly connected to a plurality of fixed plug rods, one side of the movable partition is fixedly connected to a through groove, a side of the movable partition away from the fixed plug rod is provided with a plurality of mounting holes, the inner walls of the plurality of mounting holes are fixedly connected to fixed springs, one end of the plurality of fixed springs are fixedly connected to a supporting guide rod fixedly connected to the inner wall of the receiving groove, and the inner walls of the plurality of fixed slots are provided with fixed holes.

[0009] Preferably, a wireless communication module is provided inside the power distribution cabinet body, the wireless communication module is electrically connected to the PLC controller, and the PLC controller is connected to the monitoring center via the wireless communication module.

[0010] Preferably, the number of the cover plates corresponds to that of the partition structures, the electrical component is located inside the area formed by two adjacent partition structures, and the position of the cover plate corresponds to that of the area formed by the two adjacent partition structures.

[0011] Preferably, the nozzle is located inside the area formed by two adjacent partition structures, and the nozzle corresponds to the position of the electrical component.

[0012] Preferably, the temperature sensor and the smoke sensor are both electrically connected to the PLC controller, the PLC controller is electrically connected to the circuit breaker, the PLC controller is electrically connected to the sound and light alarm, and the PLC controller is electrically connected to the delivery pump.

[0013] Preferably, the diverter pipe passes through the inside of the through slot, and the outer diameter of the diverter pipe is smaller than the width of the through slot.

[0014] Preferably, the movable partition and the partition are made of high-strength fireproof material.

[0015] Preferably, the shapes of the connecting block and the connecting slot are both T-shaped, the connecting block is adapted to the size of the connecting slot, the number of the fixed rods corresponds to the number of the fixed sockets, the fixed rods are adapted to the size of the fixed sockets, a part of the support guide rod is located inside the mounting hole, the diameter of the support guide rod is adapted to the diameter of the mounting hole, the movable partition is slidably connected to the support guide rod through the mounting hole, and the size of the movable partition is adapted to the fixed slot.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a closed power distribution cabinet with automatic power-off and fire-extinguishing function, which has the following beneficial effects:

[0018] 1. The closed power distribution cabinet with automatic power-off and fire-extinguishing function divides the interior of the power distribution cabinet body into multiple areas through a plurality of partition structures and a plurality of cover plates, and places a plurality of electrical components separately, which greatly avoids the influence of a fire in an electrical component in a certain area on the electrical components in other areas, and through the coordinated setting with the fire extinguishing agent raw material box, delivery pump, shunt pipe, nozzle, PLC controller, circuit breaker, temperature sensor, smoke sensor and sound and light alarm, it can automatically and timely perform power-off and fire-extinguishing operations in the event of a fire, thereby avoiding the burning of electrical components and the spread of fire.

[0019] 2. The closed power distribution cabinet with automatic power-off and fire-extinguishing function makes it easier to install and remove the partition structure through the coordinated arrangement of connecting slots, fixed slots, connecting blocks, partitions, storage slots, movable partitions, fixed plug rods, through slots, mounting holes, fixed springs and supporting guide rods, so that it is easy to remove the partition structure and clean or replace it when a fire occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0021] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the present invention without a partition structure;

[0023] Figure 4It is a structural schematic diagram of the partition structure and its connecting components of the present invention;

[0024] Figure 5 It is a schematic cross-sectional structure diagram of the partition structure and its connecting components of the present invention;

[0025] Figure 6 It is a schematic diagram of the control principle of the present invention.

[0026] In the figure: 1-distribution cabinet body, 2-cover plate, 3-fire extinguishing agent raw material box, 4-delivery pump, 5-diverter pipe, 6-nozzle, 7-mounting bracket, 8-electrical component, 9-PLC controller, 10-circuit breaker, 11-connection card slot, 12-fixed slot, 13-partition structure, 1301-connection card block, 1302-partition, 1303-storage slot, 1304-movable partition, 1305-fixed plug rod, 1306-through slot, 1307-mounting hole, 1308-fixed spring, 1309-support guide rod, 14-temperature sensor, 15-smoke sensor, 16-sound and light alarm, 17-fixed jack, 18-wireless communication module. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-6A closed power distribution cabinet with automatic power-off and fire-extinguishing function, comprising a power distribution cabinet body 1, one side of the power distribution cabinet body 1 is connected with a plurality of cover plates 2 by a hinge, the length of the cover plates 2 is the same as the width of the power distribution cabinet body 1, the power distribution cabinet body 1 is not provided with heat dissipation holes and other structures, and through the cooperation with the cover plates 2, the power distribution cabinet is a relatively closed power distribution cabinet, one side of the power distribution cabinet body 1 is fixedly installed with a fire extinguishing agent raw material box 3, the interior of the fire extinguishing agent raw material box 3 is perfluorohexanone fire extinguishing agent, the perfluorohexanone fire extinguishing agent is an environmentally friendly fire extinguishing agent, which can extinguish the electrical components inside the power distribution cabinet body 1 while ensuring that the electrical components will not be corroded, and the perfluorohexanone fire extinguishing agent has a fast fire extinguishing speed and a good fire control effect, and the fire extinguishing agent raw material box 3 is connected with a delivery pump 4 through a pipeline, The delivery pump 4 is fixedly installed on one side of the distribution cabinet body 1. The delivery pump 4 is fixedly connected to a shunt pipe 5 through a pipeline. The shunt pipe 5 passes through the top side of the distribution cabinet body 1 and extends to the inside of the distribution cabinet body 1. The shunt pipe 5 is fixedly connected to the distribution cabinet body 1. The bottom end of the shunt pipe 5 is fixedly connected to the bottom side of the inside of the distribution cabinet body 1, supporting the shunt pipe 5 to ensure the stability of the shunt pipe 5. A number of nozzles 6 are fixedly installed on the outer surface of the shunt pipe 5. A number of mounting brackets 7 are arranged inside the distribution cabinet body 1. Electrical components 8 are installed on the mounting brackets 7. The electrical components 8 are various electrical components required for the operation of the distribution cabinet. A PLC controller 9 and a circuit breaker 10 are fixedly installed on one side of the inside of the distribution cabinet body 1. One side of the inside of the distribution cabinet body 1 is opened There are several connection slots 11, and several fixed slots 12 are opened on the side of the distribution cabinet body 1 away from the connection slots 11. The number of the fixed slots 12 corresponds to the number of the connection slots 11, and the fixed slots 12 correspond to the positions of the connection slots 11. A partition structure 13 is arranged between the several connection slots 11 and the several fixed slots 12, and a temperature sensor 14 and a smoke sensor 15 are arranged on the several partition structures 13. An audible and visual alarm 16 is fixedly installed on the top side of the distribution cabinet body 1. By setting a preset threshold value for the temperature sensor 14 and the smoke sensor 15 on the PLC controller 9, the temperature sensor 14 and the smoke sensor 15 will only be activated when the parameters detected by the temperature sensor 14 and the smoke sensor 15 exceed the threshold value. Start, when the electrical components 8 inside the power distribution cabinet body 1 catch fire, the smoke sensor 15 will capture the smoke particles and generate an electrical signal, and the temperature sensor 14 will detect the sharp rise in temperature and output a corresponding electrical signal, and then the temperature sensor 14 and the smoke sensor 15 will transmit signals to the PLC controller 9, at which time the PLC controller 9 will control the circuit breaker 10 to start and cut off the power distribution cabinet, and at which time the PLC controller 9 will control the sound and light alarm 16 to start and emit a sound and light alarm signal, thereby reminding the surrounding personnel that there is a fire inside the power distribution cabinet, and the PLC controller 9 will control the delivery pump 4 to start, at which time the fire extinguishing agent raw material in the fire extinguishing agent raw material box 3 will be delivered to the inside of the diversion pipe 5,Then, the extinguishing agent is sprayed out through several nozzles 6 to extinguish the fire of the electrical components 8. When a certain electrical component 8 catches fire, the partition structure 13 can prevent the burning electrical component 8 from affecting other electrical components 8, thereby preventing the fire from spreading.

[0029] The partition structure 13 includes a connecting block 1301, a partition 1302, a receiving groove 1303, a movable partition 1304, a fixed plug rod 1305, a through groove 1306, a mounting hole 1307, a fixed spring 1308 and a supporting guide rod 1309. The connecting block 1301 is connected to the interior of the connecting slot 11, and the partition 1302 is fixedly connected to one side of the connecting block 1301. The receiving groove 1303 is provided on one side of the partition 1302. The inner wall of the receiving groove 1303 is slidably connected to the movable partition 1304. One side of the movable partition 1304 is fixedly connected to a plurality of A fixed plug rod 1305 is provided, and a through slot 1306 is fixedly connected to one side of the movable partition 1304. A plurality of mounting holes 1307 are provided on the side of the movable partition 1304 away from the fixed plug rod 1305. The inner walls of the plurality of mounting holes 1307 are fixedly connected to fixed springs 1308. One end of the plurality of fixed springs 1308 is fixedly connected to a support guide rod 1309 fixedly connected to the inner wall of the storage slot 1303. The inner walls of the plurality of fixed slots 12 are fixedly provided with fixed plug holes 17. The widths of the partition 1302 and the movable partition 1304 are the same as those of the distribution cabinet body 1 The depth of the internal dimensions is adapted, and the length of the partition 1302 and the movable partition 1304 is adapted to the width of the internal dimensions of the distribution cabinet body 1. When installing the partition 1302 and its connecting member, the movable partition 1304 is moved and a part of the movable partition 1304 is stored in the storage groove 13. At this time, the fixed spring 1308 is in a compressed state, and then the connecting card block 1301 is inserted into the connecting card groove 11. At this time, the movable partition 1304 corresponds to the position of the fixed slot 12, and the fixed plug rod 1305 corresponds to the position of the fixed socket 17. And the position of the shunt tube 5 corresponds to the slot 1306, and then the movable partition 1304 is slowly loosened. At this time, under the reaction force of the fixed spring 1308, the movable partition 1304 is inserted into the interior of the fixed slot 12, and the fixed insertion rod 1305 is inserted into the interior of the fixed socket 17, thereby completing the operation of the partition 1302, making the operation of installing the partition 1302 relatively simple, and also convenient for removing the partition 1302. During the movement of the movable partition 1304, the shunt tube 5 passes through the interior of the slot 1306 to ensure that the movable partition 1304 moves smoothly.

[0030] A wireless communication module 18 is provided inside the distribution cabinet body 1. The wireless communication module 18 is electrically connected to the PLC controller 9. The PLC controller 9 is connected to the monitoring center via the wireless communication module 18, so that the PLC controller 9 can transmit signals to the monitoring center, so that the personnel of the monitoring center can be informed of the fire situation of the distribution cabinet in time.

[0031] The number of cover plates 2 and partition structures 13 corresponds, the electrical component 8 is located inside the area formed by two adjacent partition structures 13, and the position of the cover plate 2 and the area formed by two adjacent partition structures 13 corresponds, so that a more comprehensive shielding and sealing operation can be performed between the two adjacent partition structures 13.

[0032] The nozzle 6 is located inside the area formed by two adjacent partition structures 13, and the position of the nozzle 6 corresponds to the electrical component 8, so that the nozzle 6 can spray the fire extinguishing agent raw material on the electrical component 8 more accurately, making the fire extinguishing effect of the fire extinguishing agent raw material better.

[0033] The temperature sensor 14 and the smoke sensor 15 are both electrically connected to the PLC controller 9, the PLC controller 9 is electrically connected to the circuit breaker 10, the PLC controller 9 is electrically connected to the sound and light alarm 16, and the PLC controller 9 is electrically connected to the delivery pump 4, so that the PLC controller 9 can control whether the circuit breaker 10, the sound and light alarm 16 and the delivery pump 4 are turned on according to the signals of the temperature sensor 14 and the temperature sensor 15.

[0034] The shunt tube 5 passes through the inside of the groove 1306, and the outer diameter of the shunt tube 5 is smaller than the width of the groove 1306. The groove 1306 can ensure that the movable partition 1304 will not interfere with the shunt tube 5 during the movement, so that the movable partition 1304 can move smoothly and be inserted into the inside of the fixed slot 12.

[0035] The materials of the movable partition 1304 and the partition 1302 are both high-strength fireproof materials, so that the fireproof performance of the movable partition 1304 and the partition 1302 is relatively good, and the movable partition 1304 and the partition 1302 can be prevented from catching fire.

[0036] The shapes of the connecting block 1301 and the connecting slot 11 are both T-shaped, and the size of the connecting block 1301 and the connecting slot 11 are adapted to each other. Through the connecting block 1301 and the connecting slot 11, the partition 1302 can be stably connected to the distribution cabinet body 1, the number of the fixed plug rods 1305 corresponds to the number of the fixed sockets 17, and the size of the fixed plug rods 1305 and the fixed sockets 17 are adapted to each other, so that the fixed plug rods 1305 can be smoothly inserted into the interior of the fixed sockets 17, a part of the support guide rod 1309 is located inside the mounting hole 1307, and the diameter of the support guide rod 1309 is adapted to the diameter of the mounting hole 1307, and the movable partition 1304 is slidably connected to the support guide rod 1309 through the mounting hole 1307, and the movable partition 1304 is adapted to the size of the fixed slot 12, so that the movable partition 1304 can be smoothly moved and inserted into the interior of the fixed slot 12.

[0037] During use, when the electrical components 8 inside the power distribution cabinet body 1 catch fire, the smoke sensor 15 will capture the smoke particles and generate an electrical signal, and the temperature sensor 14 will detect the sharp rise in temperature and output a corresponding electrical signal, and then the temperature sensor 14 and the smoke sensor 15 will transmit signals to the PLC controller 9, at which time the PLC controller 9 will control the circuit breaker 10 to start and cut off the power supply to the power distribution cabinet, and at which time the PLC controller 9 will control the sound and light alarm 16 to start and emit a sound and light alarm signal, thereby reminding the surrounding personnel that there is a fire inside the power distribution cabinet, and the PLC controller 9 will control the delivery pump 4 to start, at which time the fire extinguishing agent raw material inside the fire extinguishing agent raw material box 3 will be delivered to the inside of the diversion pipe 5, and then the fire extinguishing agent raw material will be sprayed out through a number of nozzles 6, thereby extinguishing the electrical components 8.

[0038] In summary, the enclosed power distribution cabinet with automatic power-off and fire-extinguishing function divides the interior of the power distribution cabinet body 1 into multiple areas through a plurality of partition structures 13 and a plurality of cover plates 2, and separates a plurality of electrical components 8, which greatly avoids the influence of a fire in an electrical component 8 in a certain area on the electrical components 8 in other areas, and is equipped with a fire extinguishing agent raw material box 3, a delivery pump 4, a shunt pipe 5, a nozzle 6, a PLC controller 9, a circuit breaker 10, a temperature sensor 14, a smoke sensor 15 and an audible and visual alarm 16, so that the fire extinguisher can be automatically shut down when a fire occurs. Automatic and timely power-off and fire-extinguishing operations can prevent electrical components from burning and the spread of fire. The matching arrangement of the connecting slot 11, the fixed slot 12, the connecting card block 1301, the partition 1302, the storage slot 1303, the movable partition 1304, the fixed plug rod 1305, the through slot 1306, the mounting hole 1307, the fixed spring 1308 and the supporting guide rod 1309 makes it easier to install and remove the partition structure 13, so that when a fire occurs, it is convenient to remove the partition structure 13 and clean or replace the partition structure 13.

[0039] 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. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] 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 closed power distribution cabinet with automatic power-off and fire-extinguishing function, characterized in that: The invention comprises a power distribution cabinet body (1), one side of the power distribution cabinet body (1) is connected to a plurality of cover plates (2) via a hinge, one side of the power distribution cabinet body (1) is fixedly mounted with a fire extinguishing agent raw material box (3), the fire extinguishing agent raw material box (3) is connected to a delivery pump (4) via a pipeline, the delivery pump (4) is fixedly connected to a shunt pipe (5) via a pipeline, a plurality of nozzles (6) are fixedly mounted on the outer surface of the shunt pipe (5), a plurality of mounting brackets (7) are arranged inside the power distribution cabinet body (1), and electrical components (8) are mounted on the plurality of mounting brackets (7), the power distribution cabinet body (1) ) is fixedly mounted on one side of the interior of the power distribution cabinet body (1), a plurality of connection slots (11) are provided on one side of the interior of the power distribution cabinet body (1), a plurality of fixed slots (12) are provided on a side of the interior of the power distribution cabinet body (1) away from the connection slots (11), a partition structure (13) is provided between the plurality of connection slots (11) and the plurality of fixed slots (12), a temperature sensor (14) and a smoke sensor (15) are provided on the plurality of partition structures (13), and an audible and visual alarm (16) is fixedly mounted on the top side of the power distribution cabinet body (1).

2. A closed power distribution cabinet with automatic power-off and fire-extinguishing function according to claim 1, characterized in that: The partition structure (13) comprises a connecting block (1301), a partition (1302), a storage groove (1303), a movable partition (1304), a fixed plug rod (1305), a through groove (1306), a mounting hole (1307), a fixed spring (1308) and a supporting guide rod (1309); the connecting block (1301) is clamped inside the connecting groove (11); one side of the connecting block (1301) is fixedly connected to the partition (1302); one side of the partition (1302) is provided with a storage groove (1303); the inner wall of the storage groove (1303) is slidably connected to the movable partition (1304); A plurality of fixed plug rods (1305) are fixedly connected to one side of the movable partition (1304), a through slot (1306) is fixedly connected to one side of the movable partition (1304), a plurality of mounting holes (1307) are provided on the side of the movable partition (1304) away from the fixed plug rod (1305), the inner walls of the plurality of mounting holes (1307) are fixedly connected to fixed springs (1308), one end of the plurality of fixed springs (1308) are fixedly connected to a support guide rod (1309) fixedly connected to the inner wall of the storage slot (1303), and the inner walls of the plurality of fixed slots (12) are fixedly provided with fixed plug holes (17).

3. A closed power distribution cabinet with automatic power-off and fire-extinguishing function according to claim 2, characterized in that: A wireless communication module (18) is arranged inside the power distribution cabinet body (1); the wireless communication module (18) is electrically connected to the PLC controller (9); and the PLC controller (9) is connected to a monitoring center via the wireless communication module (18).

4. A closed power distribution cabinet with automatic power-off and fire-extinguishing function according to claim 3, characterized in that: The number of the cover plate (2) and the partition plate structures (13) corresponds, the electrical component (8) is located inside the area formed by two adjacent partition plate structures (13), and the position of the area formed by the cover plate (2) and the two adjacent partition plate structures (13) corresponds.

5. A closed power distribution cabinet with automatic power-off and fire-extinguishing function according to claim 4, characterized in that: The nozzle (6) is located inside the area formed by two adjacent partition structures (13), and the positions of the nozzle (6) and the electrical component (8) correspond.

6. A closed power distribution cabinet with automatic power-off and fire-extinguishing function according to claim 5, characterized in that: The temperature sensor (14) and the smoke sensor (15) are both electrically connected to the PLC controller (9), the PLC controller (9) is electrically connected to the circuit breaker (10), the PLC controller (9) is electrically connected to the sound and light alarm (16), and the PLC controller (9) is electrically connected to the delivery pump (4).

7. A closed power distribution cabinet with automatic power-off and fire-extinguishing function according to claim 6, characterized in that: The shunt pipe (5) passes through the inside of the through groove (1306), and the outer diameter of the shunt pipe (5) is smaller than the width of the through groove (1306).

8. A closed power distribution cabinet with automatic power-off and fire-extinguishing function according to claim 7, characterized in that: The movable partition (1304) and the partition (1302) are both made of high-strength fireproof materials.

9. A closed power distribution cabinet with automatic power-off and fire-extinguishing function according to claim 8, characterized in that: The shapes of the connecting block (1301) and the connecting slot (11) are both T-shaped, the connecting block (1301) is matched to the size of the connecting slot (11), the number of the fixing rods (1305) corresponds to the number of the fixing holes (17), the sizes of the fixing rods (1305) and the fixing holes (17) are matched, a part of the supporting guide rod (1309) is located inside the mounting hole (1307), the diameter of the supporting guide rod (1309) is matched to the diameter of the mounting hole (1307), the movable partition (1304) is slidably connected to the supporting guide rod (1309) through the mounting hole (1307), and the size of the movable partition (1304) is matched to the size of the fixing slot (12).

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