Power distribution cabinet protection device

Abstract

The utility model relates to the field of power distribution cabinets, in particular to a power distribution cabinet protection device, which comprises a protection box body, a main body used for providing protection capability for a power distribution cabinet, fixing bolts and reinforcing plates penetrating through two sides of the outer part of the protection box body and used for threaded connection, and outer impact pads are fixedly arranged outside the reinforcing plates. The power distribution cabinet protection device is provided with the reinforcing plate, the outer impact pad, the high-frequency current transformer, the temperature sensor, the inner protection frame, the vacuum arc extinguish chamber and the vacuum fuse switch. The protection box body, the external reinforcing plate and the external impact pad enhance the impact resistance and protection capability of the power distribution cabinet, physical protection is formed outside the power distribution cabinet, then the high-frequency current transformer and the temperature sensor are further arranged on the two sides of the power distribution cabinet components inside the power distribution cabinet body, and the high-frequency current transformer is used for detecting internal circuit faults.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinets, and specifically to a power distribution cabinet protection device. Background Technology

[0002] Distribution cabinets are key equipment in power systems, used for power distribution, line control, and safety protection. They consist of switching equipment, measuring instruments, protective electrical appliances, and auxiliary equipment, integrated into a metal cabinet according to a specific wiring scheme. The protection devices in the distribution cabinet are used to detect and isolate electrical faults, aiming to ensure personal safety, equipment reliability, and power supply continuity.

[0003] A search revealed a power distribution cabinet protection device (CN217956415U), specifically disclosing a device to prevent small animals from entering. The device includes a power distribution cabinet body with a protective base plate at its bottom. Fixing blocks are located on the front left, front right, rear left, and rear right sides of the protective base plate, and are fixed to the base plate. Each fixing block has a fixing limit hole at its top. A protective fence is located at the top of the fixing blocks, and several limit rods are located at the front and rear of the bottom of the protective fence. A protective top plate is located at the top of the protective fence, and several telescopic rod placement holes are located in the middle of the top plate. Several electric telescopic rods are located in the middle of each telescopic rod placement hole, and O-shaped support plates are located at the bottom of the electric telescopic rods. The O-shaped support plates are fixed to the telescopic ends of the electric telescopic rods, and a ground spike plate is located at the top of the O-shaped support plate.

[0004] Existing power distribution cabinet protection devices, during use, only provide external protection for the power distribution cabinet and cannot monitor the operating status and temperature changes of the internal circuits in real time. Once a circuit fault or overheating occurs, it is difficult to detect and deal with it in time, thus rendering the external protection device ineffective. Moreover, the power distribution cabinet protection devices in the aforementioned comparative cases also lack the ability to provide dual protection, both internal and external. Over time, this will lead to problems such as insufficient physical protection and delayed circuit fault detection and response for the power distribution cabinet.

[0005] Therefore, it is necessary to invent a power distribution cabinet protection device to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a power distribution cabinet protection device. This device achieves both external physical protection and internal circuit protection through a reinforcing plate, external impact pad, high-frequency current transformer, temperature sensor, internal protective frame, vacuum interrupter, and vacuum fuse switch. This enhances the power distribution cabinet's impact resistance, circuit fault detection and response efficiency, and current interruption and circuit protection effects. This comprehensive protection mechanism not only improves the safety and reliability of the power distribution cabinet but also reduces the probability of faults and the severity of their consequences. Furthermore, it allows the power distribution cabinet inside the protection device to operate stably, thereby extending its service life. This addresses the problem in existing power distribution cabinet protection devices that only provide external protection and cannot monitor the internal circuit's operating status and temperature changes in real time. Once a circuit fault or overheating occurs, it is difficult to detect and handle it promptly, causing the external protection device to fail. Moreover, the power distribution cabinet protection devices in the aforementioned comparative cases also lack dual internal and external protection capabilities. Over long-term use, this leads to insufficient physical protection and delayed circuit fault detection and response.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a power distribution cabinet protection device, including a protective enclosure, which is a main body for providing protection to the power distribution cabinet;

[0008] Fixed bolts are inserted through both sides of the outer side of the protective enclosure for threaded connection of the reinforcing plate. External impact pads are fixedly installed on the outside of the reinforcing plate. The inside of the protective enclosure is covered with a heat-absorbing protective layer. A power distribution cabinet is fixedly installed inside the protective enclosure.

[0009] A component rack is set inside the power distribution cabinet to assist in the installation of components in the power distribution cabinet. The components of the power distribution cabinet are fixedly installed inside the component rack. High-frequency current transformers are fixedly installed on both sides inside the component rack, and a temperature sensor is fixedly installed above the high-frequency current transformers.

[0010] An inner protective frame, positioned above the component rack, provides internal protection for the distribution cabinet. Vacuum interrupters are fixedly installed on both sides of the upper part of the inner protective frame. A vacuum fuse switch is threadedly connected to the upper part of the inner protective frame. A switch plate is movably connected inside the vacuum fuse switch. A movable frame is fixedly installed at the bottom of the switch plate. A telescopic cylinder is fixedly installed above the inner protective frame. An external box is fixedly installed above the protective enclosure. A drive controller is fixedly installed inside the external box.

[0011] Preferably, the number of the external impact pads is set to multiple, and the multiple external impact pads are distributed at equal intervals on the reinforcing plate.

[0012] Preferably, the protective enclosure is hinged to a front door, and the front door has a heat dissipation vent on its exterior.

[0013] Preferably, the protective housing and the heat-absorbing protective layer are tightly bonded together, and the material of the heat-absorbing protective layer is epoxy resin.

[0014] Preferably, the top of the telescopic cylinder is hinged to the movable frame at the bottom of the switch plate, and the protective frame inside the vacuum interrupter is symmetrically arranged along its central axis.

[0015] Preferably, a heat dissipation frame is fixedly installed at the bottom of the protective box, and heat dissipation fins are fixedly installed inside the heat dissipation frame.

[0016] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0017] 1. This utility model includes a reinforcing plate, an external impact pad, a high-frequency current transformer, a temperature sensor, an inner protective frame, a vacuum interrupter, and a vacuum fuse. When using this distribution cabinet protection device, the distribution cabinet body is first fitted inside the protective enclosure. The protective enclosure, along with the external reinforcing plate and external impact pad, enhances the distribution cabinet's impact resistance and protection capabilities, forming physical protection for the distribution cabinet from the outside. Furthermore, high-frequency current transformers and temperature sensors are installed on both sides of the distribution cabinet components inside the cabinet. The high-frequency current transformers are used to detect internal circuit faults, while the temperature sensors are used to detect the internal temperature. This, combined with the vacuum interrupter, further enhances the protection. When a high-voltage overload occurs inside the distribution cabinet, it can quickly respond and actively cut off the current. Then, through the extension and retraction of the telescopic cylinder, it can actively drive the vacuum fuse switch to close, thus forming internal circuit protection. This combination of external physical protection and internal circuit protection improves the distribution cabinet's impact resistance, circuit fault detection and response efficiency, and current cutting-off and circuit protection effects. This comprehensive protection mechanism not only improves the safety and reliability of the distribution cabinet, but also reduces the probability of fault occurrence and the severity of consequences, further enabling the distribution cabinet inside the protection device to operate stably, thereby extending its service life.

[0018] 2. This utility model is equipped with a protective enclosure, a front door, heat dissipation vents, a heat-absorbing protective layer, a heat dissipation frame, and heat dissipation fins. When using this distribution cabinet protection device, since the distribution cabinet is fitted inside the protective enclosure, and multiple heat dissipation vents are opened on the outside of the front door, the high temperature inside the distribution cabinet can be directly dissipated from the front through the heat dissipation vents. Moreover, the inside of the protective enclosure is covered with a heat-absorbing protective layer, which can quickly absorb the heat dissipated by the distribution cabinet. Then, the heat dissipation frame and heat dissipation fins at the bottom provide auxiliary heat dissipation. This comprehensive heat dissipation mechanism not only effectively reduces the working temperature inside the distribution cabinet, improves the stability and lifespan of the equipment, but also enhances the safety protection performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the external impact pad structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the power distribution cabinet structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the vacuum interrupter structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the heat dissipation fin structure of this utility model;

[0025] Figure 6 This is the system control flowchart of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Protective enclosure; 2. Fixing bolts; 3. Reinforcing plate; 4. External impact pad; 5. Front door; 6. Heat dissipation vent; 7. Heat absorption protective layer; 8. Distribution cabinet; 9. Component rack; 10. Distribution cabinet components; 11. High-frequency current transformer; 12. Temperature sensor; 13. Inner protective frame; 14. Vacuum interrupter; 15. Vacuum fuse switch; 16. Switchboard; 17. Movable frame; 18. Telescopic cylinder; 19. External box; 20. Drive controller; 21. Heat dissipation rack; 22. Heat dissipation fins. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] This utility model provides, for example Figure 1-6 The diagram shows a power distribution cabinet protection device, which includes a protective enclosure 1, a main body for providing protection to the power distribution cabinet;

[0030] Fixed bolts 2 penetrate through both sides of the outer side of the protective enclosure 1 and are used to thread the reinforcing plate 3. External impact pads 4 are fixedly installed on the outside of the reinforcing plate 3. The inside of the protective enclosure 1 is covered with a heat-absorbing protective layer 7. A power distribution cabinet 8 is fixedly installed inside the protective enclosure 1.

[0031] Component rack 9 is set inside the power distribution cabinet 8 to assist in the installation of components in the power distribution cabinet. Power distribution cabinet components 10 are fixedly installed inside the component rack 9. High-frequency current transformers 11 are fixedly installed on both sides inside the component rack 9. Temperature sensor 12 is fixedly installed above the high-frequency current transformers 11.

[0032] An inner protective frame 13 is positioned above the component rack 9 to provide internal protection for the distribution cabinet. Vacuum interrupters 14 are fixedly installed on both sides of the upper part of the inner protective frame 13. A vacuum fuse switch 15 is threadedly connected to the upper part of the inner protective frame 13. A switch plate 16 is movably connected inside the vacuum fuse switch 15. A movable frame 17 is fixedly installed at the bottom of the switch plate 16. A telescopic cylinder 18 is fixedly installed above the inner protective frame 13. An external box 19 is fixedly installed above the protective enclosure 1. A drive controller 20 is fixedly installed inside the external box 19. High-frequency current transformers 11 and temperature sensors 12 are also installed on both sides of the distribution cabinet components 10 inside the distribution cabinet 8. The high-frequency current transformers 11 are used to detect internal circuit faults, while the temperature sensors 12 are used to detect internal temperature. In this way, in conjunction with the vacuum interrupters 14, the distribution cabinet can quickly respond and actively cut off the current when a high voltage overload occurs inside. Then, the telescopic cylinder 18 can actively drive the vacuum fuse switch 15 to close, thereby forming internal circuit protection.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the number of external impact pads 4 is set to multiple, and the multiple external impact pads 4 are distributed at equal intervals on the reinforcing plate 3. The distribution cabinet 8 is fitted inside the protective box 1. The protective box 1, together with the external reinforcing plate 3 and external impact pads 4, enhances the impact resistance and protection capability of the distribution cabinet itself. The protective box 1 is hinged to the outside of the front door 5, and the front door 5 has heat dissipation vents 6. Since the distribution cabinet 8 is fitted inside the protective box 1, and multiple heat dissipation vents 6 are also opened on the outside of the front door 5, the high temperature inside the distribution cabinet can be directly dissipated from the front through the heat dissipation vents 6. The protective box 1 and the heat-absorbing protective layer 7 are tightly bonded. The material of the heat-absorbing protective layer 7 is epoxy resin. The inside of the protective box 1 is covered with the heat-absorbing protective layer 7, which can quickly absorb the heat dissipated by the distribution cabinet.

[0034] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the top of the telescopic cylinder 18 is hinged to the movable frame 17 at the bottom of the switch plate 16. The protective frame 13 inside the vacuum interrupter 14 is symmetrically arranged along the central axis. The telescopic cylinder 18 can actively drive the vacuum fuse switch 15 to close, thereby forming internal circuit protection. A heat sink 21 is fixedly installed at the bottom of the protective box 1. Heat sink fins 22 are fixedly installed inside the heat sink 21. The protective box 1 is assisted in heat dissipation through the heat sink 21 and heat sink fins 22 at the bottom.

[0035] The working principle of this utility model is as follows: First, connect the external power supply and install the required distribution cabinet 8 inside the protective enclosure 1. The protective enclosure 1, along with the external reinforcing plate 3 and external impact pad 4, enhances the impact resistance and protection capabilities of the distribution cabinet, forming physical protection for the distribution cabinet from the outside. Then, the drive controller 20 on the top of the protective enclosure 1 is connected to the high-frequency current transformer 11 and the temperature sensor 12 to detect the two sides of the distribution cabinet components 10 inside the distribution cabinet 8. The high-frequency current transformer 11 is used to detect internal circuit faults, while the temperature sensor 12 is used to detect the internal temperature. In conjunction with the vacuum interrupter 14, this allows for a rapid response and active current cut-off in the event of a high-voltage overload inside the distribution cabinet. Furthermore, after an overload occurs, the drive controller 20 can also open the switch of the telescopic cylinder 18. Through the extension and retraction of the telescopic cylinder 18, the switch plate 16 of the vacuum fuse switch 15 is actively lowered, thereby cutting off the vacuum fuse switch 15 and forming internal circuit protection. This combination of external physical protection and internal circuit protection enhances the protection of the distribution cabinet. The distribution cabinet's impact resistance, circuit fault detection and response efficiency, current cut-off, and circuit protection effects are all assessed. Afterwards, the distribution cabinet components 10 inside the cabinet body 8 can be started normally for circuit power supply. During the use of this distribution cabinet protection device, since the distribution cabinet body 8 is housed inside the protective enclosure 1, and multiple heat dissipation vents 6 are opened on the exterior of the front door 5, the high temperature inside the distribution cabinet can be directly dissipated from the front through the heat dissipation vents 6. Next, the protective enclosure 1 is covered with a heat-absorbing protective layer 7, which can quickly absorb the heat dissipated from the distribution cabinet. Further heat dissipation is aided by the heat dissipation rack 21 and heat dissipation fins 22 at the bottom. This comprehensive heat dissipation mechanism not only effectively reduces the internal operating temperature of the distribution cabinet, improving the stability and lifespan of the equipment, but also enhances safety protection performance. Finally, after completing the installation and use of all the distribution cabinet protection devices according to the above operations, the switch of the telescopic cylinder 18 is turned off. If not used for a long time, the external power supply can be disconnected. This completes the use of the distribution cabinet protection device.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A switchgear protection device, characterized by: Comprising Protective box (1), the main body for providing protection ability to power distribution cabinet; Fixed bolt (2), penetrating the outside of the protective box (1), used for threaded connection of reinforcing plate (3), and the outside of reinforcing plate (3) is fixedly installed with external impact pad (4), the inside of protective box (1) is covered with heat absorption protective layer (7), the inside of protective box (1) is fixedly installed with power distribution cabinet body (8); Component rack (9), arranged in the inside of power distribution cabinet body (8), used for assisting power distribution cabinet to install components, and power distribution cabinet component (10) is fixedly installed in the inside of component rack (9), high-frequency current transformer (11) is fixedly installed on the inside of component rack (9), temperature sensor (12) is fixedly arranged above high-frequency current transformer (11); Inner protection frame (13), arranged above component rack (9), used for protecting the inside of power distribution cabinet, and vacuum arc-extinguishing chamber (14) is fixedly installed on the upper side of inner protection frame (13), vacuum fuse switch (15) is threaded connected above inner protection frame (13), switch plate (16) is movably connected in the inside of vacuum fuse switch (15), movable frame (17) is fixedly installed on the bottom of switch plate (16), telescopic air cylinder (18) is fixedly installed above inner protection frame (13), external box (19) is fixedly installed above protective box (1), drive controller (20) is fixedly arranged in the inside of external box (19).

2. A switchgear protection device according to claim 1, characterized in that: The number of external impact pads (4) is set to multiple, and multiple external impact pads (4) are distributed at equal intervals on reinforcing plate (3).

3. A switchgear protection device according to claim 1, characterized in that: The outside of protective box (1) is hinged with front box door (5), and heat dissipation opening (6) is formed in the outside of front box door (5).

4. A switchgear protection device according to claim 1, characterized in that: The protective box (1) and the heat absorption protective layer (7) are closely fitted, and the material of the heat absorption protective layer (7) is epoxy resin.

5. A switchgear protection device according to claim 1, characterized in that: The top end of telescopic air cylinder (18) is hingedly connected with movable frame (17) at the bottom of switch plate (16), and vacuum arc-extinguishing chamber (14) is symmetrically arranged with the central axis of inner protection frame (13).

6. A switchgear protection device according to claim 1, characterized in that: The bottom of protective box (1) is fixedly installed with heat dissipation frame (21), and heat dissipation fin (22) is fixedly arranged in the inside of heat dissipation frame (21).

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