A complete set of power switchgear

Abstract

The present invention relates to a complete set of power switchgear, comprising a cabinet body and a cabinet door hinged to the surface of the cabinet body, wherein a ventilation mechanism for ventilation is provided on the side of the cabinet body, and a protective mechanism is provided on the surface of the cabinet door; the protective mechanism comprises an embedded groove embedded in the surface of the cabinet door and a take-up roller placed in the inner cavity of the embedded groove, and the inner cavity of the embedded groove is fixedly connected to a placement rack for placing roller shafts on both sides of the take-up roller. The present invention relates to the field of switchgear technology. This complete set of power switchgear, by integrating active leakage protection, intelligent heat dissipation, and self-cleaning functions, solves the pain points of traditional equipment in terms of safety and maintenance efficiency. It is suitable for scenarios such as high-voltage power distribution, industrial control, and new energy, and has both technological advancement and economic practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of switchgear, in particular to a complete set of power switchgear. Background Art

[0002] With the expansion of power system scale and the increasing demand for intelligentization, the safety and reliability of complete sets of power switchgear, as the core equipment of the power transmission and distribution network, have received widespread attention. However, traditional equipment still has significant bottlenecks in structural design, safety protection and operation and maintenance efficiency, which are manifested in the following problems:

[0003] 1. The safety protection mechanism is lagging behind, and the risk of electric shock is high

[0004] Limitations of passive protection:

[0005] Existing equipment often relies on mechanical interlocks (such as the five-protection interlock) or warning signs for safety protection, but these measures only work when the power is off or during normal operation. When equipment experiences faults such as leakage or short circuits and cannot be completely de-energized (e.g., residual voltage or improper operation leading to the opening of a live cabinet), operators can be easily electrocuted by directly touching the cabinet door or handle. According to statistics, approximately 15% of maintenance accidents in the power industry are related to inadequate protection during live operation.

[0006] Lack of emergency measures:

[0007] Traditional equipment lacks active isolation mechanisms, requiring operators to rely on insulating tools (such as testers and insulating rods) for trial operations. This process is cumbersome and carries the risk of misjudgment. Especially in high-voltage scenarios (e.g., above 10kV), contactless door opening technology is not yet widely available, further exacerbating safety risks.

[0008] 2. Low cooling system efficiency and high operation and maintenance costs

[0009] Heat dissipation attenuation caused by dust accumulation:

[0010] Traditional cabinets use fixed ventilation holes or simple filters. After long-term operation, dust accumulation increases air resistance and reduces heat dissipation efficiency by 30% to 50%. In high-temperature environments, excessive temperature rise in switching components (such as circuit breakers and transformers) can cause insulation degradation and even fire.

[0011] Disadvantages of manual maintenance:

[0012] Filters require regular disassembly and cleaning, with short maintenance cycles (typically 1-3 months), and downtime for maintenance impacts power continuity. This issue is particularly acute in industrial dusty environments (such as metallurgy and chemical industries), where maintenance costs in some scenarios can account for over 20% of the total equipment cost.

[0013] 3. Emergency operations rely on manual experience and lack standardization

[0014] Lack of automated emergency response:

[0015] Existing equipment relies heavily on operator experience and manual intervention when power leaks or faults occur, lacking proactive protection mechanisms linked to fault signals. For example, manual power testing and grounding wires must be connected before cabinet doors can be opened, a time-consuming and prone to errors.

[0016] Limitations of Insulation Assist Tools:

[0017] Temporary tools such as insulating ropes and insulating blankets need to be arranged on site, which are inconvenient to store and prone to aging, making it difficult to achieve rapid response and reuse. Summary of the Invention

[0018] In response to the shortcomings of the existing technology, the present invention provides a complete set of power switchgear, which solves the systemic defects of traditional complete sets of power switchgear in terms of live operation safety, heat dissipation system sustainability and intelligent adaptability.

[0019] To achieve the above objectives, the present invention is implemented through the following technical solutions: a complete set of power switchgear, comprising a cabinet body and a cabinet door hinged to the surface of the cabinet body, a ventilation mechanism for ventilation is provided on the side of the cabinet body, and a protective mechanism is provided on the surface of the cabinet door;

[0020] The protective mechanism includes an embedded groove embedded in the surface of the cabinet door and a take-up roller placed in the inner cavity of the embedded groove, the inner cavity of the embedded groove is fixedly connected to a placement rack for placing roller shafts on both sides of the take-up roller, an insulating rope is wrapped around the surface of the take-up roller, one end of the insulating rope is connected to the handle of the cabinet door, the inner cavity of the placement rack is slidably connected to a positioning pin, one end of the positioning pin passes through and extends to the inner cavity of the roller shaft, the inner cavity of the roller shaft is provided with a positioning groove adapted to the positioning pin, the top end of the positioning pin is fixedly connected to an iron block located above the placement rack, the inner cavity of the embedded groove is fixedly connected to an electromagnet located above the iron block, the electromagnet is connected to the cabinet door through a wire, and when in use When a fault occurs in the cabinet, the cabinet door needs to be opened for inspection. Sometimes it is impossible to completely cut off the power, or there is a fault and the power cannot be cut off. At this time, directly opening the cabinet door may cause harm to the operating staff. When there is a leakage, the cabinet door conducts electricity through the wire to form a path with the electromagnet, and then the electromagnet absorbs the iron block, driving the positioning pin to move upward from the positioning groove. At this time, the roller loses the positioning of the positioning groove, and the take-up roller rolls down under the inclined surface of the placement frame, and automatically rolls forward under the action of inertia, spreading the insulating rope. While it can serve as a warning, the operator can open the cabinet door by pulling the insulating rope to observe the situation, which is safer and can be observed without cutting off the power, and can be reinstalled and continued to be used.

[0021] As a further solution of the present invention, the placement rack is gradually tilted downward from the back to the front, and when the positioning pin is lost, the take-up roller automatically rolls down.

[0022] As a further solution of the present invention: the insulating rope is made of aramid impregnated with epoxy resin, and is resistant to high voltage and has high strength.

[0023] As a further solution of the present invention: the ventilation mechanism includes a ventilation hood, the inner cavity of the ventilation hood is fixedly connected to the exhaust fan, the inner cavity of the ventilation hood located on the right side of the exhaust fan is slidably connected to the filter screen through a sliding block, the inner cavity of the ventilation hood is fixedly connected to the sliding block through a return spring, a metal mesh is provided on the right side of the ventilation hood, the center of the filter screen is fixedly connected to a guide block, the output shaft end of the exhaust fan is fixedly connected to a connecting shaft, one end of the connecting shaft passes through the guide block and extends to the right side of the guide block, the right end of the connecting shaft is rotatably connected to the left side of the metal mesh, and the connecting shaft is movably connected to the inner cavity of the guide block.

[0024] As a further solution of the present invention: elastic sealing belts fixedly connected to the inner cavity of the ventilation hood are fixed around the filter screen, and a good sealing effect is ensured by the elastic sealing belt.

[0025] As a further solution of the present invention: the surface of the connecting shaft located between the exhaust fan and the filter is fixedly connected to a rotating disk, one side of the rotating disk is fixedly connected to a spring telescopic rod, and the right end of the spring telescopic rod is rotatably connected to a ball that abuts the left side of the filter.

[0026] As a further solution of the present invention: an abutment ring abutting against the ball is fixedly connected to the left side of the filter screen, and the friction on the filter screen is reduced by the contact between the ball and the abutment ring.

[0027] As a further solution of the present invention: the rotating disk is an inclined disk, which is set by the inclined disk. When the exhaust fan rotates, the connecting shaft is driven to rotate, which drives the rotating disk to rotate. The ball of the spring telescopic rod squeezes the abutment ring. When rotating, the spring telescopic rod continuously expands and contracts, and when squeezing on the surface of the abutment ring, it continuously pushes the filter to slide left and right in the ventilation hood, shaking off the dust on the surface. At this time, the filter is limited by the reset spring, and its moving distance is controlled and reset. At the same time, the exhaust fan can draw the outside air into the filter, filter it, and then transport it to the inside of the cabinet for heat dissipation. At the same time, the filter can be automatically cleaned without manual processing, and long-term ventilation effect can be guaranteed.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. Significantly improved security

[0030] Live operation protection:

[0031] The electromagnet is linked to the insulating rope, which is automatically released in the event of a current leakage. The operator can open the cabinet door from a distance without having to directly touch it, thus avoiding the risk of electric shock.

[0032] Double warning:

[0033] When the insulating rope is spread out, a visual warning area is formed. At the same time, when the electromagnet is energized, the sound and light alarm device can be linked to further enhance the safety warning capability.

[0034] 2. Efficient and intelligent cooling system

[0035] Self-cleaning function:

[0036] The exhaust fan power is used to drive the filter to vibrate and clean the dust, reducing the frequency of manual maintenance and extending the service life of the equipment.

[0037] Energy saving and environmental protection:

[0038] Dynamically adjust the filter resistance to avoid dust accumulation causing a decrease in air volume, maintain heat dissipation efficiency, and reduce energy consumption.

[0039] 3. Structural optimization and reliability

[0040] Modular design:

[0041] The protection mechanism and the ventilation mechanism are installed independently, which is convenient for inspection and replacement and reduces maintenance costs.

[0042] High reliability materials:

[0043] The insulating rope is made of aramid base material, which is resistant to high temperature and has high tensile strength; the metal mesh of the ventilation mechanism and the elastic sealing belt ensure long-term sealing.

[0044] 4. Significant economic benefits

[0045] Reduce power outage losses:

[0046] Supports safe maintenance under live state to avoid production interruption caused by power outage.

[0047] Reduce operation and maintenance costs:

[0048] The self-cleaning filter reduces the frequency of manual cleaning, and the protective mechanism can be reused).

[0049] 5. This complete set of power switchgear solves the pain points of traditional equipment in terms of safety and maintenance efficiency by integrating active leakage protection, intelligent heat dissipation and self-cleaning functions. It is suitable for scenarios such as high-voltage power distribution, industrial control and new energy, and combines technological advancement with economic practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0051] Figure 2 This is a structural front view of the present invention;

[0052] Figure 3 For the present invention Figure 2 A partial enlarged view of point A in the middle;

[0053] Figure 4 It is a structural schematic diagram of the ventilation cover of the present invention;

[0054] Figure 5 For the present invention Figure 4 A partial enlarged view of point A in the middle.

[0055] In the figure: 1. Cabinet body; 2. Cabinet door; 3. Insulating rope; 4. Embedded groove; 5. Take-up roller; 6. Roller shaft; 7. Placement rack; 8. Positioning groove; 9. Electromagnet; 10. Iron block; 11. Positioning pin; 12. Ventilation cover; 13. Exhaust fan; 14. Filter; 15. Rotating disk; 16. Spring telescopic rod; 17. Ball bearing; 18. Abutment ring; 19. Guide block; 20. Connecting shaft; 21. Sliding block; 22. Return spring. DETAILED DESCRIPTION

[0056] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0057] See also Figure 1-Figure 5 The present invention provides a technical solution: a complete set of power switchgear, comprising a cabinet body 1 and a cabinet door 2 hinged to the surface of the cabinet body 1, a ventilation mechanism for ventilation is provided on the side of the cabinet body 1, and a protective mechanism is provided on the surface of the cabinet door 2;

[0058] The protective mechanism includes an embedded groove 4 embedded in the surface of the cabinet door 2 and a take-up roller 5 placed in the inner cavity of the embedded groove 4. The inner cavity of the embedded groove 4 is fixedly connected with a placement rack 7 for placing roller shafts 6 on both sides of the take-up roller 5. An insulating rope 3 is wound around the surface of the take-up roller 5. One end of the insulating rope 3 is connected to the handle of the cabinet door 2. A positioning pin 11 is slidably connected to the inner cavity of the placement rack 7. One end of the positioning pin 11 passes through and extends to the inner cavity of the roller shaft 6. The inner cavity of the roller shaft 6 is provided with a positioning groove 8 adapted to the positioning pin 11. The top of the positioning pin 11 is fixedly connected to an iron block 10 located above the placement rack 7. The inner cavity of the embedded groove 4 is fixedly connected to an electromagnet 9 located above the iron block 10. The electromagnet 9 is connected to the cabinet door 2 through a wire. When the cabinet is in use, When the body 1 fails, the cabinet door 2 needs to be opened for inspection. Sometimes it is impossible to completely cut off the power, or there is a fault and the power cannot be cut off. At this time, directly opening the cabinet door 2 may cause harm to the operating staff. When there is a leakage, the cabinet door 2 conducts electricity through the wire to form a path with the electromagnet 9, and then the electromagnet 9 absorbs the iron block 10, driving the positioning pin 11 to move upward from the positioning groove 8. At this time, the roller shaft 6 loses the positioning of the positioning groove 8, and the wire-reeling roller 5 rolls down under the inclined surface of the placement frame 7, and automatically rolls forward under the action of inertia, spreading the insulating rope 3. While it can play a warning role, the operator can pull the insulating rope 3 to open the cabinet door 2 to observe the situation, which is safer and can be observed without power outage, and can be reinstalled and continued to be used.

[0059] The placement rack 7 gradually tilts downward from the back to the front, and when the positioning pin 11 is lost, the take-up roller 5 automatically rolls down.

[0060] The insulating rope 3 is made of aramid impregnated with epoxy resin, and is resistant to high voltage and has high strength.

[0061] The ventilation mechanism includes a ventilation hood 12, the inner cavity of the ventilation hood 12 is fixedly connected to the exhaust fan 13, the inner cavity of the ventilation hood 12 located on the right side of the exhaust fan 13 is slidably connected to the filter screen 14 through a sliding block 21, the inner cavity of the ventilation hood 12 is fixedly connected to the sliding block 21 through a return spring 22, a metal mesh is provided on the right side of the ventilation hood 12, the center of the filter screen 14 is fixedly connected to a guide block 19, the output shaft end of the exhaust fan 13 is fixedly connected to a connecting shaft 20, one end of the connecting shaft 20 passes through the guide block 19 and extends to the right side of the guide block 19, the right end of the connecting shaft 20 is rotatably connected to the left side of the metal mesh, and the connecting shaft 20 is movably connected to the inner cavity of the guide block 19.

[0062] An elastic sealing belt 23 fixedly connected to the inner cavity of the ventilation cover 12 is fixed around the filter screen 14, and a good sealing effect is ensured by the elastic sealing belt 23.

[0063] The surface of the connecting shaft 20 located between the exhaust fan 13 and the filter 14 is fixedly connected to a rotating disk 15, and one side of the rotating disk 15 is fixedly connected to a spring telescopic rod 16. The right end of the spring telescopic rod 16 is rotatably connected to a ball 17 that abuts the left side of the filter 14.

[0064] The left side of the filter screen 14 is fixedly connected with an abutting ring 18 that abuts against the ball 17 . The contact between the ball 17 and the abutting ring 18 reduces friction on the filter screen 14 .

[0065] The rotating disk 15 is an inclined disk. Through the setting of the inclined disk, when the exhaust fan 13 rotates, the connecting shaft 20 is driven to rotate, and the rotating disk 15 is driven to rotate. The ball 17 of the spring telescopic rod 16 squeezes the abutment ring. When rotating, the spring telescopic rod 16 continuously expands and contracts, and when squeezing on the surface of the abutment ring 18, it continuously pushes the filter 14 to slide left and right in the ventilation cover 12, shaking off the dust on the surface. At this time, the filter 14 is limited by the reset spring 22, and its moving distance is controlled and reset. At the same time, the outside air can be drawn into the cabinet 1 for heat dissipation after being filtered by the filter 14 through the exhaust fan 13, and the filter 14 can be automatically cleaned. Long-term ventilation effect can be guaranteed without manual processing.

[0066] When the present invention is used,

[0067] 1. Emergency protection of leakage protection of protective mechanism

[0068] Trigger mechanism:

[0069] When the cabinet body 1 leaks electricity, the cabinet door 2 is energized and connected to the electromagnet 9 through a wire, forming a closed circuit. The electromagnet 9 is energized to generate magnetic force to attract the iron block 10.

[0070] Unlocking and insulating rope release:

[0071] After the iron block 10 is adsorbed, it drives the positioning pin 11 upward to disengage from the positioning groove 8 of the roller shaft 6, thereby releasing the fixation of the take-up roller 5.

[0072] The take-up roller 5 gradually tilts downward from the back to the front due to the tilted design of the placement frame 7 , and automatically rolls down under the action of gravity, while rolling forward by inertia to release the wound insulating rope 3 .

[0073] Safe operation:

[0074] After the insulating rope 3 is spread out, a safe operating area is formed. The operator can pull the insulating rope 3 away from the open cabinet door 2 to avoid direct contact with the live cabinet door.

[0075] The insulating rope 3 is made of epoxy resin impregnated aramid material, which is resistant to high voltage such as above 10kV and has high tensile strength, ensuring safe operation.

[0076] 2. Intelligent heat dissipation and self-cleaning of ventilation mechanism

[0077] Heat dissipation process:

[0078] After the exhaust fan 13 is started, the external air is sucked in through the ventilation cover 12, and is sent into the cabinet 1 after the dust is removed through the filter 14 to reduce the temperature of the equipment.

[0079] Self-cleaning mechanism:

[0080] Vibration cleaning:

[0081] The output shaft of the exhaust fan 13 drives the connecting shaft 20 to rotate, and the inclined plate type rotating disk 15 on the connecting shaft 20 moves accordingly, and the ball 17 at the end of the spring telescopic rod 16 periodically squeezes the abutment ring 18 on the left side of the filter screen 14.

[0082] Reciprocating motion:

[0083] The squeezing of the balls 17 pushes the filter 14 to slide left and right along the sliding block 21 , while the return spring 22 provides a reverse return force, forming high-frequency vibration to shake off dust on the surface of the filter 14 .

[0084] Seal and guide:

[0085] The elastic sealing belt 23 ensures the sealing of the filter screen 14 when it slides, preventing dust leakage; the guide block 21 ensures that the moving track of the filter screen 14 is stable.

[0086] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A complete set of power switchgear, comprising a cabinet body (1) and a cabinet door (2) hinged on a surface of the cabinet body (1), characterized in that: A ventilation mechanism for ventilation is provided on the side of the cabinet body (1), and a protective mechanism is provided on the surface of the cabinet door (2); The protective mechanism comprises an embedded groove (4) embedded in the surface of the cabinet door (2) and a take-up roller (5) placed in the inner cavity of the embedded groove (4), the inner cavity of the embedded groove (4) is fixedly connected to a placement rack (7) for placing roller shafts (6) on both sides of the take-up roller (5), an insulating rope (3) is wound around the surface of the take-up roller (5), one end of the insulating rope (3) is connected to the handle of the cabinet door (2), and the inner cavity of the placement rack (7) is slidably connected to a positioning pin (11). One end of the positioning pin (11) passes through and extends to the inner cavity of the roller shaft (6), and the inner cavity of the roller shaft (6) is provided with a positioning groove (8) adapted to the positioning pin (11). The top end of the positioning pin (11) is fixedly connected to an iron block (10) located above the placement rack (7). The inner cavity of the embedded groove (4) is fixedly connected to an electromagnet (9) located above the iron block (10). The electromagnet (9) is connected to the cabinet door (2) through a wire. The placement rack (7) is fixedly connected to the inner cavity of the embedded groove (4). The ventilating mechanism comprises a ventilation cover (12), the inner cavity of the ventilation cover (12) is fixedly connected to the exhaust fan (13), the inner cavity of the ventilation cover (12) on the right side of the exhaust fan (13) is slidably connected to the filter screen (14) through a sliding block (21), the inner cavity of the ventilation cover (12) is fixedly connected to the sliding block (21) through a return spring (22), a metal mesh is provided on the right side of the ventilation cover (12), the center of the filter screen (14) is fixedly connected to a guide block (19), the output shaft end of the exhaust fan (13) is fixedly connected to a connecting shaft (20), one end of the connecting shaft (20) passes through the guide block (19) and extends to the right side of the guide block (19), the right end of the connecting shaft (20) is rotatably connected to the left side of the metal mesh, and the connecting shaft (20) is movably connected to the inner cavity of the guide block (19).

2. A complete set of power switchgear according to claim 1, characterized in that: The insulating rope (3) is made of aramid impregnated with epoxy resin.

3. The complete set of power switchgear according to claim 1, characterized in that: An elastic sealing belt (23) fixedly connected to the inner cavity of the ventilation cover (12) is fixed around the filter screen (14), and a good sealing effect is ensured by the elastic sealing belt (23).

4. The complete set of power switchgear according to claim 1, characterized in that: The surface of the connecting shaft (20) located between the exhaust fan (13) and the filter (14) is fixedly connected to a rotating disk (15), one side of the rotating disk (15) is fixedly connected to a spring telescopic rod (16), and the right end of the spring telescopic rod (16) is rotatably connected to a ball (17) that abuts against the left side of the filter (14).

5. The complete set of power switchgear according to claim 1, characterized in that: The left side of the filter screen (14) is fixedly connected to an abutting ring (18) that abuts against the ball (17). The contact between the ball (17) and the abutting ring (18) reduces friction on the filter screen (14).

6. The complete set of power switchgear according to claim 4, characterized in that: The rotating disk (15) is a slant disk.

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