Power distribution cabinet with built-in fireproof and flame-retardant structure

Abstract

The application discloses a power distribution cabinet with built-in fireproof and flame-retardant structure and relates to the field of power distribution cabinets.The power distribution cabinet with built-in fireproof and flame-retardant structure is characterized in that a closed mounting cavity is formed through cooperation between a bottom support strip, a bottom support plate, a side vertical plate and an inner backing plate, a fire extinguishing agent tank is mounted between the bottom support plate and the inner backing plate, the fire extinguishing agent tank is prevented from being exposed and damaged, a temperature sensor is arranged at the bottom of a protective pipe cover, the working temperature in the cabinet can be monitored in real time, when high-temperature fire is detected, the fire extinguishing agent can be sprayed to a fire area through a connecting pipe and a nozzle, fire extinguishing is realized, and the space in the cabinet is divided through a partitioned flame-retardant structure formed by cooperation between a flame-retardant material bottom backing plate, an inner partition plate and a top groove plate, so that the fire spreads horizontally and vertically is blocked, the fire is prevented from expanding, the fireproof and flame-retardant capacity of the power distribution cabinet is improved, and the risk of electrical fire spreading is reduced.

Description

Technical Field

[0001] Specifically, this invention relates to a power distribution cabinet with a built-in fireproof and flame-retardant structure, and pertains to the field of power distribution cabinets. Background Technology

[0002] As a core basic equipment in the power transmission and distribution system, power distribution cabinets are widely used in various scenarios such as industrial production, building power distribution and municipal power. They are mainly used for centralized installation, protection and control of electrical components such as power switches, transformers and lines. Their operational safety and stability are directly related to the power supply reliability of the overall power system. A power distribution cabinet with good stability, disclosed in CN113013753B, includes a cabinet and a stabilization system. The stabilization system includes a fixing plate, a sliding plate, a slider, and a stabilizing frame. Two cross fixing plates are fixedly connected to the bottom of the cabinet. When moving the power distribution cabinet, the cabinet is manually pushed to make the pulleys roll, saving transportation costs. When installing the power distribution cabinet, the size of the stabilizing frame is adjusted according to the size of the cement support frame, so that the stabilizing frame and the cement support frame fit tightly, making the installation and replacement of the power distribution cabinet simple. At the same time, it reduces the shaking of the power distribution cabinet during installation, making it convenient and easy to move and install the power distribution cabinet. When reinstalling the power distribution cabinet, the installation cost is saved. The power distribution cabinet and the cement support frame cooperate with each other to stabilize the power distribution cabinet, reduce the installation time of the power distribution cabinet, and improve the construction efficiency of the construction site. In existing equipment, traditional cabinets are mostly made of ordinary metal sheets and lack dedicated flame-retardant partitions and fire extinguishing structures. As electrical equipment inside the cabinets operates for a long time, the wiring ages and generates electric arcs that ignite the fire. The cabinets cannot contain the fire, and the fire will quickly spread to the entire cabinet and even external power distribution equipment, causing equipment damage and triggering large-scale power outages. Summary of the Invention

[0003] To address the aforementioned problems, a technical solution is proposed: a power distribution cabinet with a built-in fireproof and flame-retardant structure, comprising: The cabinet mechanism has a top cover mechanism installed on its top and a partition mechanism installed inside its interior. The partition mechanism includes a bottom support strip, which is symmetrically installed along the center of the cabinet structure's axis. A bottom support plate is fixedly installed on the top of the bottom support strip, and the outer side of the bottom support plate is flush with the inner wall of the cabinet structure. A side upright plate is fixedly installed on the top of the bottom support plate. Grille grooves are provided at the bottom of both sides of the side upright plate, and an inner pad is fixedly installed between the side upright plates. The inner pad is located above the grille grooves of the side upright plates. A fire extinguishing agent tank is fixedly installed between the bottom support plate and the inner pad, symmetrically installed along the center of the inner pad. The bottom support strip, bottom support plate, side upright plate, and inner pad form a closed installation cavity, housing the fire extinguishing agent tank between the bottom support plate and the inner pad, preventing the fire extinguishing agent tank from being exposed and damaged. A temperature sensor is installed at the bottom of the protective cover to monitor the working temperature inside the cabinet in real time. When a high-temperature fire is detected, a fire extinguishing sensor is activated. The fire extinguishing agent can be sprayed onto the fire area through a connecting pipe and nozzle to extinguish the fire. A connecting pipe is fixedly installed at the mouth of the fire extinguishing agent tank. The end of the connecting pipe away from the fire extinguishing agent tank passes through the inner pad plate and extends into its interior. Protective covers are fixedly installed on the opposite sides of the side panels. The protective covers wrap around the connecting pipe. The partitioned flame-retardant structure formed by the flame-retardant bottom pad plate, inner partition plate, and top groove plate divides the space inside the cabinet, preventing the horizontal and vertical spread of fire, avoiding the expansion of the fire, improving the fire resistance and flame retardant capability of the distribution cabinet, and reducing the risk of electrical fire spread. The top of the connecting pipe passes through the protective cover and extends to its outside. A nozzle is fixedly installed at the end of the connecting pipe that passes through the protective cover. A temperature sensor is fixedly installed at the bottom of the opposite side of the protective cover. An inner partition plate is fixedly installed at the center of the top of the inner pad plate. The inner partition plate divides the space between the side panels.

[0004] Preferably, a top groove plate is fixedly installed on the top of the opposite side of the side panel, the bottom of the top groove plate is fixedly connected to the top of the inner partition plate, and the top of the top groove plate is uniformly provided with through grooves. A fixing cover is fixedly installed at the grid groove of the opposite side of the side panel, and a guide tube is fixedly installed on the opposite side of the fixing cover. The end of the guide tube away from the fixing cover passes through the inner pad plate and extends to its top.

[0005] Preferably, the cabinet mechanism includes a base, on the top of which an outer cabinet frame and a bottom pad are fixedly installed. The bottom pad is located inside the outer cabinet frame, and its outer side is flush with the bottom of the inner wall of the outer cabinet frame. The bottom pad is made of flame-retardant material. A cabinet door is provided on the outer side of the outer cabinet frame. Square grooves are formed on the bottom of the outer side of the outer cabinet frame adjacent to the cabinet door, and grilles are fixedly installed in the square grooves. Inner guide covers are fixedly installed on the inner walls of the grilles, and the inner wall of the inner guide cover, on the side away from the grilles, is an inclined surface that slopes from top to bottom away from the grilles. There is an airflow gap between the bottoms of the grilles. The bottoms of both sides of the outer cabinet frame... The outer cabinet frame has evenly spaced water channels, with the bottom of the channels flush with the top of the support plate. These channels, located on both sides of the bottom of the outer cabinet frame, effectively drain rainwater and condensate from the cabinet, preventing water accumulation. The top cover also features a raised, sloping structure with guiding strips to further drain rainwater from the top, preventing leaks and protecting the equipment from moisture, corrosion, and short circuits. Inner support blocks are fixedly installed on both sides of the inner wall of the outer cabinet frame. These blocks are symmetrically installed from top to bottom along the center of the outer cabinet frame's axis, with the end of each inner support block furthest from the outer cabinet frame fixedly connected to the non-opposing side of the side panel. The inner support blocks are installed at an angle between the outer cabinet frame and the side panel.

[0006] Preferably, the top cover mechanism includes a connecting frame, which is fixedly installed on the top of the outer cabinet frame, and a top cover plate is fixedly installed on the top of the connecting frame. The top of the top cover plate has a sloping surface with a central protrusion, and raised strips are evenly arranged on the sloping surface of the top of the top cover plate. Air guide grooves are evenly opened on both sides of the connecting frame, and outer baffles are fixedly installed at the air guide grooves on both sides of the connecting frame. A grid plate is fixedly installed between the inner wall of the outer baffle and the outer side of the connecting frame. The grid plate is installed obliquely between the outer baffle and the connecting frame, and grid grooves are evenly opened on the outer side of the grid plate.

[0007] Preferably, an inner groove plate is fixedly installed on the inner wall of the connecting frame. A heat dissipation groove is evenly distributed at the center of the top of the inner groove plate. The bottom edge of the connecting frame is flush with the top of the outer cabinet frame. Inner support plates are fixedly installed on both sides of the bottom of the inner groove plate. A bottom air intake channel is formed by the grille cover at the bottom of the outer cabinet frame and the inner guide cover. The side panel grille groove, fixed cover, and guide tube enable air exchange between the upper and lower cavities inside the cabinet. Simultaneously, the top cover mechanism is equipped with an air guide groove, an inclined grille plate, and an inner sliding plate, which, together with the heat dissipation groove of the inner groove plate, constitute... The top exhaust structure forms a complete circulating ventilation and heat dissipation channel. Compared with the traditional single heat dissipation hole structure, it avoids component aging and short circuit problems caused by high temperature accumulation. The inclined grille and inner guide cover can block dust from entering the cabinet, taking into account both heat dissipation and dust prevention effects. The bottom of the opposite side of the inner support plate is provided with protruding strips, and the inner slide plate is slidably installed between the inner support plates. The bottom sides of the inner slide plate are provided with guide grooves, and the guide grooves are located on both sides of the heat dissipation strip groove of the inner plate. The bottom sides of the inner slide plate are in contact with the protruding strips of the inner support plate.

[0008] This invention provides a power distribution cabinet with a built-in fireproof and flame-retardant structure, which has the following beneficial effects: (i) A closed installation cavity is formed by the cooperation of the bottom support strip, bottom support plate, side upright plate and inner pad plate. The fire extinguishing agent tank is installed inside between the bottom support plate and the inner pad plate to avoid the fire extinguishing agent tank being exposed and damaged. At the same time, a temperature sensor is installed at the bottom of the protective cover to monitor the working temperature inside the cabinet in real time. When a high temperature fire is detected, the fire extinguishing agent can be sprayed to the fire area through the connecting pipe and nozzle to extinguish the fire.

[0009] (ii) The fire-retardant structure formed by the bottom pad plate made of flame-retardant material, combined with the inner partition and the top groove plate, divides the space inside the cabinet, prevents the fire from spreading horizontally and vertically, avoids the fire from spreading, improves the fire resistance and flame retardant capability of the power distribution cabinet, and reduces the risk of electrical fire spread.

[0010] (iii) Water guide grooves are opened on both sides of the bottom of the outer cabinet frame, and the bottom of the water guide grooves is flush with the top of the bottom support plate. This can guide rainwater and condensate that seep into the cabinet and prevent water accumulation. At the same time, the sloping structure with the center of the top cover plate is raised and a guide strip is set to guide rainwater from the top, prevent water leakage from the top cover, and prevent the equipment from getting damp and corroded and the wiring from short circuit.

[0011] (iv) The bottom air intake channel is formed by the grille cover at the bottom of the outer cabinet frame and the inner guide cover. The air is interconnected between the upper and lower cavities inside the cabinet by the side plate grille groove, the fixed cover and the guide tube. At the same time, the top cover mechanism is equipped with air guide groove, inclined grille plate and inner slide plate, which together with the heat dissipation groove of the inner plate form the top exhaust structure, forming a complete circulating ventilation and heat dissipation channel. Compared with the traditional single heat dissipation hole structure, it avoids the aging of components and short circuit problems caused by high temperature accumulation. Moreover, the inclined grille plate and inner guide cover can block dust from entering the cabinet, taking into account both heat dissipation and dust prevention effects. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the cabinet mechanism of the present invention; Figure 4 This is a sectional view of the cabinet mechanism of the present invention; Figure 5 This is a schematic diagram of the separation mechanism of the present invention; Figure 6 This is a side view of the structure of the partition mechanism of the present invention; Figure 7 This is a schematic diagram of the top cover mechanism of the present invention; Figure 8 This is a sectional view of the top cover mechanism of the present invention; Figure 9 This is a top-view sectional view of the top cover mechanism of the present invention.

[0013] In the diagram: 1. Cabinet body; 2. Dividing mechanism; 3. Top cover mechanism; 11. Base; 12. Outer cabinet frame; 13. Grille cover; 14. Inner guide cover; 15. Bottom pad plate; 16. Inner support block; 21. Bottom support strip; 22. Bottom support plate; 23. Fire extinguishing agent tank; 24. Fixing cover; 25. Conductor tube; 26. Side upright plate; 27. Inner partition plate; 28. Pipe cover; 29. ​​Top groove plate; 210. Connecting pipe; 211. Temperature sensor; 212. Nozzle; 213. Inner pad plate; 31. Connecting frame; 32. Top cover plate; 33. Inner groove plate; 34. Outer baffle; 35. Grille plate; 36. Inner support plate; 37. Inner sliding plate. Detailed Implementation

[0014] Example 1, Reference Figures 1 to 2 and Figures 5 to 6 The present invention provides this technical solution: A power distribution cabinet with a built-in fireproof and flame-retardant structure includes: Cabinet mechanism 1, top cover mechanism 3 is installed on the top of cabinet mechanism 1, and partition mechanism 2 is installed inside cabinet mechanism 1; The partition mechanism 2 includes a bottom support strip 21, which is symmetrically installed along the center of the axis of the cabinet mechanism 1. A bottom support plate 22 is fixedly installed on the top of the bottom support strip 21. The outer side of the bottom support plate 22 is in contact with the inner wall of the cabinet mechanism 1. A side upright plate 26 is fixedly installed on the top of the bottom support plate 22. The bottom of both sides of the side upright plate 26 has a grid groove. An inner pad plate 213 is fixedly installed between the side upright plates 26. The inner pad plate 213 is located above the grid groove of the side upright plate 26. A fire extinguishing agent canister 23 is fixedly installed between the bottom support plate 22 and the inner pad plate 213. The bottom support plate 22 is supported and fixed by the bottom support strip 21. The bottom support plate 22 fits into the interior of the cabinet, and together with the side uprights 26 fixed to the top of the bottom support plate 22, they form a vertical protective frame. The inner pads 213 between the side uprights 26 separate the lower equipment cavity and the upper installation cavity. The inner partition 27 in the center of the inner pads 213 further divides the upper space into two, realizing the partitioned installation of electrical components, avoiding crowded contact between wiring and equipment, and reducing the risk of short circuit fire. The fire extinguishing agent tank 23 is symmetrically installed along the center of the axis of the inner pads 213. A connecting pipe 210 is fixedly installed at the opening of the fire extinguishing agent tank 23. The end of the connecting pipe 210 away from the fire extinguishing agent tank 23 passes through the inner pads 213. Extending into its interior, the opposite sides of the side panels 26 are fixedly equipped with pipe covers 28, which enclose the connecting pipes 210. The top of the connecting pipes 210 passes through the pipe covers 28 and extends to its outer side. In the event of a fire, the temperature sensor 211 installed at the bottom of the opposite side of the side panels 26 detects the operating temperature inside the distribution cabinet. When the temperature of the monitored area exceeds the safety threshold, it is determined that a fire has occurred inside the cabinet. Subsequently, the extinguishing agent tanks 23, which are symmetrically installed between the bottom support plate 22 and the inner pad plate 213, are activated. The extinguishing medium inside the tank is transported upward through the connecting pipe 210 connected to the tank opening. The connecting pipe 210 is continuously... The protective cover 28 protects the pipeline from damage caused by high temperature and equipment collision, ensuring the stability of the gas and material conveying path. The extinguishing medium is accurately sprayed from the nozzle 212 at the top of the connecting pipe 210 to the fire zone inside the cabinet. When a fire occurs, the inner partition 27 isolates the fire area from the adjacent equipment area to prevent the fire from spreading laterally. The nozzle 212 is fixedly installed at one end of the connecting pipe 210 that passes through the protective cover 28. A temperature sensor 211 is fixedly installed at the bottom of the opposite side of the protective cover 28. The inner partition 27 is fixedly installed at the center of the top of the inner pad 213, and the inner partition 27 separates the space between the side panels 26.

[0015] A top groove plate 29 is fixedly installed on the top of the opposite side of the side plate 26. The bottom of the top groove plate 29 is fixedly connected to the top of the inner partition plate 27. The top of the top groove plate 29 is evenly provided with through grooves. Fixed covers 24 are fixedly installed at the grid grooves on the opposite side of the side plate 26. Both the side plate 26 and the bottom pad plate 15 are made of flame-retardant material. Together with the top groove plate 29, they seal the top gap of the side plate 26, blocking the fire from spreading outward and forming a closed flame-retardant protective space. A guide tube 25 is fixedly installed on the opposite side of the fixed cover 24. The end of the guide tube 25 away from the fixed cover 24 passes through the inner pad plate 213 and extends to its top.

[0016] Example 2, based on Example 1, with reference to Figures 3 to 4 The cabinet mechanism 1 includes a base 11. An outer cabinet frame 12 and a bottom pad 15 are fixedly installed on the top of the base 11. The bottom pad 15 is located inside the outer cabinet frame 12, and its outer side is flush with the bottom of the inner wall of the outer cabinet frame 12. The bottom pad 15 is made of flame-retardant material. A cabinet door is provided on the outer side of the outer cabinet frame 12. Square grooves are provided on the bottom of the outer side of the outer cabinet frame 12 adjacent to the cabinet door. A bottom air intake channel is formed by a grille cover 13 and an inner inclined guide cover 14. External cold air passes through the grille... Airflow enters the cabinet through the air guide gap between the grille 13 and the inner guide 14. The inclined inner guide 14 prevents dust and debris from directly entering the cabinet. The airflow entering the cabinet passes through the grille groove at the bottom of the side panel 26, the fixed cover 24, and the guide tube 25, connecting the upper and lower cavities to achieve air convection inside the cabinet. Grilles 13 are fixedly installed in the square grooves of the outer cabinet frame 12, and inner guide 14s are fixedly installed on the inner walls of the grilles 13. The inner wall of the inner guide 14, away from the grille 13, flows from top to bottom. The outer cabinet frame 12 has a sloping surface that slopes downwards away from the side away from the grille cover 13. There is an air guiding gap between the bottom of the grille cover 13 and the bottom of the grille cover 13. Water guiding grooves are evenly provided on the bottom of both sides of the outer cabinet frame 12, and the bottom of the water guiding grooves is flush with the top of the bottom support plate 22. Inner support blocks 16 are fixedly installed on both sides of the inner wall of the outer cabinet frame 12. The inner support blocks 16 are symmetrically installed from top to bottom along the center of the axis of the outer cabinet frame 12. At the same time, the flame-retardant bottom pad plate 15 isolates the base 11 from the equipment inside the cabinet to prevent the bottom from getting damp. In case of air and water intrusion, the water guide grooves on both sides of the bottom of the outer cabinet frame 12 can drain the infiltrated rainwater or condensate. The bottom of the water guide groove is flush with the top of the bottom support plate 22 to prevent water accumulation. The inner support block 16 installed at an angle on the inner side of the outer cabinet frame 12 is fixedly connected to the outer cabinet frame 12 and the side upright plate 26 to enhance the overall structural stability of the cabinet. The end of the inner support block 16 away from the outer cabinet frame 12 is fixedly connected to the non-opposite side of the side upright plate 26. The inner support block 16 is installed at an angle between the outer cabinet frame 12 and the side upright plate 26.

[0017] Example 3, based on Examples 1 and 2, with reference to Figures 7 to 9The top cover mechanism 3 includes a connecting frame 31, which is fixedly installed on the top of the outer cabinet frame 12. A top cover plate 32 is fixedly installed on the top of the connecting frame 31. The top of the top cover plate 32 has a centrally protruding sloping surface, and protruding strips are evenly provided on the sloping surface of the top of the top cover plate 32. Air guide grooves are evenly provided on both sides of the connecting frame 31. An outer baffle 34 is fixedly installed on both sides of the air guide groove. A grid plate 35 is fixedly installed between the inner wall of the outer baffle 34 and the outer side of the connecting frame 31. Rainwater is guided through the protruding top cover plate 32 with protruding strips on the top to prevent water accumulation. The outer baffle 34 and the inclined grid plate 35 cooperate to ensure ventilation while blocking external dust or rain and snow from entering the cabinet. The grid plate 35 is installed at an incline between the outer baffle 34 and the connecting frame 31, and grid grooves are evenly provided on the outer side of the grid plate 35.

[0018] An inner groove plate 33 is fixedly installed on the inner wall of the connecting frame 31. A heat dissipation groove is evenly opened at the center of the top of the inner groove plate 33. The bottom edge of the connecting frame 31 is attached to the top of the outer cabinet frame 12. Inner support plates 36 are fixedly installed on both sides of the bottom of the inner groove plate 33. The bottom of the opposite side of the inner support plates 36 is provided with protruding strips. An inner slide plate 37 is slidably installed between the inner support plates 36. At the same time, the air guide grooves on both sides of the connecting frame 31, together with the inclined grille plate 35 and the outer baffle 34, form the top exhaust channel. The hot air in the cabinet flows upward through the heat dissipation groove of the inner groove plate 33 and the guide groove of the inner slide plate 37, and finally is discharged from the top, completing the whole machine circulation heat dissipation. Guide grooves are opened on both sides of the bottom of the inner slide plate 37, and the guide grooves are located on both sides of the heat dissipation groove of the inner groove plate 33. The two sides of the bottom of the inner slide plate 37 are in contact with the protruding strips of the inner support plate 36.

[0019] In the partition mechanism 2, the bottom support plate 22 is supported and fixed by the bottom support strip 21. The bottom support plate 22 fits against the inside of the cabinet and, together with the side upright plate 26 fixed to the top of the bottom support plate 22, forms a vertical protective frame. The inner pad plate 213 between the side upright plates 26 separates the lower equipment cavity and the upper installation cavity. The inner partition plate 27 in the center of the inner pad plate 213 further divides the upper space into two, realizing the partitioned installation of electrical components, avoiding crowded contact of lines and equipment, and reducing the risk of short circuit fire. In the event of a fire, the temperature sensor 211 installed on the bottom of the opposite side of the side upright plate 26 detects the working temperature inside the distribution cabinet. When the detected area temperature exceeds the safety threshold, it is determined that a fire has occurred inside the cabinet, and then the bottom support plate... The extinguishing agent tank 23, symmetrically installed between the inner pad plate 22 and the inner pad plate 213, starts working. The extinguishing medium inside the tank is transported upward through the connecting pipe 210 connected to the tank opening. The connecting pipe 210 is fully wrapped and protected by the pipe cover 28 to prevent the pipeline from being damaged by high temperature and equipment collision, and to ensure the stability of the gas and material supply path. The extinguishing medium is accurately sprayed from the nozzle 212 at the top of the connecting pipe 210 to the fire zone inside the cabinet. When a fire occurs, the inner partition plate 27 isolates the fire area from the adjacent equipment area to prevent the fire from spreading laterally. The side upright plate 26 and the bottom pad plate 15 are both made of flame-retardant material. Together with the top groove plate 29, they seal the top gap of the side upright plate 26 to block the fire from spreading outward and form a closed flame-retardant protective space.

[0020] In the cabinet structure 1, the bottom air intake channel is formed by the grille cover 13 and the inner inclined guide cover 14. External cold air enters the cabinet through the air guide gap between the grille cover 13 and the inner guide cover 14. The inclined inner guide cover 14 can prevent dust and debris from directly entering the cabinet. The airflow entering the cabinet passes through the grille groove at the bottom of the side plate 26, the fixed cover 24 and the guide tube 25 to pass through the upper and lower cavities, realizing air convection in the cabinet. At the same time, the flame-retardant bottom pad 15 isolates the base 11 from the equipment in the cabinet, preventing moisture and water accumulation from entering. The water guide grooves on both sides of the bottom of the outer cabinet frame 12 can drain the infiltrated rainwater or condensate. The bottom of the water guide groove is flush with the top of the bottom support plate 22 to prevent water accumulation. The inner support block 16 installed at an inclination on the inner side of the outer cabinet frame 12 is fixedly connected to the outer cabinet frame 12 and the side plate 26, which strengthens the overall structural stability of the cabinet.

[0021] In the top cover mechanism 3, the raised top cover plate 32 with convex strips on the top guides rainwater and prevents water accumulation. The outer cover 34 works in conjunction with the inclined grille plate 35 to ensure ventilation while blocking external dust or rain and snow from entering the cabinet. At the same time, the air guide grooves on both sides of the connecting frame 31, together with the inclined grille plate 35 and the outer cover 34, form the top exhaust channel. The hot air in the cabinet flows upward through the heat dissipation grooves of the inner slot plate 33 and the guide grooves of the inner slide plate 37, and is finally discharged from the top, completing the whole machine's circulating heat dissipation.

Claims

1. A power distribution cabinet with a built-in fireproof and flame-retardant structure, characterized in that, include: Cabinet mechanism (1), the top of the cabinet mechanism (1) is equipped with a top cover mechanism (3), and the interior of the cabinet mechanism (1) is equipped with a partition mechanism (2). The partition mechanism (2) includes a bottom support strip (21), which is symmetrically installed along the center of the axis of the cabinet mechanism (1). A bottom support plate (22) is fixedly installed on the top of the bottom support strip (21). The outer side of the bottom support plate (22) is in contact with the inner wall of the cabinet mechanism (1). A side support plate (26) is fixedly installed on the top of the bottom support plate (22). A grid groove is opened on the bottom of both sides of the side support plate (26). An inner pad plate (213) is fixedly installed between the side support plates (26). The inner pad plate (213) is located above the grid groove of the side support plate (26). A fire extinguishing agent tank (23) is fixedly installed between the bottom support plate (22) and the inner pad plate (213). The fire extinguishing agent tank (23) is symmetrically installed along the center of the axis of the inner pad plate (213). A connecting pipe (210) is fixedly installed at the mouth of the fire extinguishing agent tank (23). The end of the connecting pipe (210) away from the fire extinguishing agent tank (23) passes through the inner pad plate (213) and extends into it. A protective cover (28) is fixedly installed on the opposite side of the side plate (26). The protective cover (28) wraps the connecting pipe (210). The top end of the connecting pipe (210) passes through the protective cover (28) and extends to its outside. A nozzle (212) is fixedly installed at the end of the connecting pipe (210) that passes through the protective cover (28). A temperature sensor (211) is fixedly installed at the bottom of the opposite side of the protective cover (28). An inner partition plate (27) is fixedly installed at the center of the top of the inner pad plate (213). The inner partition plate (27) divides the space between the side plates (26).

2. The power distribution cabinet with a built-in fireproof and flame-retardant structure according to claim 1, characterized in that: A top groove plate (29) is fixedly installed on the top of the opposite side of the side plate (26). The bottom of the top groove plate (29) is fixedly connected to the top of the inner partition plate (27), and the top of the top groove plate (29) is uniformly provided with through grooves. A fixing cover (24) is fixedly installed on the grid groove of the opposite side of the side plate (26). A guide tube (25) is fixedly installed on the opposite side of the fixing cover (24). The end of the guide tube (25) away from the fixing cover (24) passes through the inner pad plate (213) and extends to its top.

3. A power distribution cabinet with a built-in fireproof and flame-retardant structure according to claim 2, characterized in that: The cabinet mechanism (1) includes a base (11), and an outer cabinet frame (12) and a bottom pad (15) are fixedly installed on the top of the base (11). The bottom pad (15) is located inside the outer cabinet frame (12). The outer side of the bottom pad (15) is attached to the bottom of the inner wall of the outer cabinet frame (12), and the bottom pad (15) is made of flame-retardant material. The outer side of the outer cabinet frame (12) is provided with a cabinet door.

4. A power distribution cabinet with a built-in fireproof and flame-retardant structure according to claim 3, characterized in that: The bottom of the outer side of the cabinet frame (12) adjacent to the cabinet door is provided with a square groove, and a grid cover (13) is fixedly installed in the square groove of the outer cabinet frame (12). An inner guide cover (14) is fixedly installed on the inner wall of the grid cover (13), and the inner wall of the inner guide cover (14) away from the grid cover (13) is an inclined surface that slopes from top to bottom away from the grid cover (13).

5. A power distribution cabinet with a built-in fireproof and flame-retardant structure according to claim 4, characterized in that: There is an airflow gap between the bottom of the grille cover (13) and the bottom of the grille cover (13). Water guide grooves are evenly provided on the bottom of both sides of the outer cabinet frame (12), and the bottom of the water guide grooves is flush with the top of the bottom support plate (22).

6. A power distribution cabinet with a built-in fireproof and flame-retardant structure according to claim 5, characterized in that: Both sides of the inner wall of the outer cabinet frame (12) are fixedly installed with inner support blocks (16). The inner support blocks (16) are symmetrically installed from top to bottom along the center of the axis of the outer cabinet frame (12). The end of the inner support block (16) away from the outer cabinet frame (12) is fixedly connected to the non-opposing side of the side plate (26). The inner support block (16) is installed at an angle between the outer cabinet frame (12) and the side plate (26).

7. A power distribution cabinet with a built-in fireproof and flame-retardant structure according to claim 6, characterized in that: The top cover mechanism (3) includes a connecting frame (31), which is fixedly installed on the top of the outer cabinet frame (12), and a top cover plate (32) is fixedly installed on the top of the connecting frame (31). The top of the top cover plate (32) is a sloping surface with a central protrusion, and protruding strips are evenly arranged on the sloping surface at the top of the top of the top cover plate (32).

8. A power distribution cabinet with a built-in fireproof and flame-retardant structure according to claim 7, characterized in that: The connecting frame (31) has air guide grooves evenly provided on both sides. An outer cover (34) is fixedly installed at the air guide grooves on both sides of the connecting frame (31). A grid plate (35) is fixedly installed between the inner wall of the outer cover (34) and the outer side of the connecting frame (31). The grid plate (35) is installed at an angle between the outer cover (34) and the connecting frame (31), and a grid groove is evenly provided on the outer side of the grid plate (35).

9. A power distribution cabinet with a built-in fireproof and flame-retardant structure according to claim 8, characterized in that: The inner wall of the connecting frame (31) is fixedly installed with an inner groove plate (33). The center of the top of the inner groove plate (33) is evenly provided with heat dissipation grooves. The bottom edge of the connecting frame (31) is attached to the top of the outer cabinet frame (12).

10. A power distribution cabinet with a built-in fireproof and flame-retardant structure according to claim 9, characterized in that: Both sides of the bottom of the inner groove plate (33) are fixedly installed with inner support plates (36). The bottom of the opposite side of the inner support plates (36) is provided with protruding strips. An inner slide plate (37) is slidably installed between the inner support plates (36). Both sides of the bottom of the inner slide plate (37) are provided with guide grooves, and the guide grooves are located on both sides of the heat dissipation groove of the inner groove plate (33). The two sides of the bottom of the inner slide plate (37) are in contact with the protruding strips of the inner support plate (36).

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