A compact protective switch cabinet

Abstract

This invention discloses a compact protective switchgear, relating to the field of switchgear technology. It includes a cabinet, frames symmetrically arranged on the side walls of the cabinet, modules symmetrically and equally spaced inside the cabinet, a fixing plate fixed to the upper part of the cabinet, and a top plate on the top of the cabinet. It also includes side panels and a rotating plate with drive modules arranged in a stepped manner, an installation assembly between the side panels and the rotating plate for placing the modules, a drive assembly at the bottom of the fixing plate for driving the rotating plate to rotate, a temperature detection assembly at the bottom of the fixing plate for detecting the internal temperature of the cabinet and triggering the drive assembly, and a lifting assembly at the bottom of the fixing plate that cooperates with the drive assembly to allow the top plate to move in a non-continuous manner. When the modules are operating under high load and generating high heat, the stepped arrangement of the modules reduces the heat exchange between modules, achieving the heat dissipation and protection effect of the compact switchgear during operation.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, specifically to a compact protective switchgear. Background Technology

[0002] Switchgear is an important type of electrical equipment, mainly used in power systems for opening, closing, controlling, and protecting electrical equipment during power generation, transmission, distribution, and energy conversion. The main components of switchgear include circuit breakers, disconnect switches, load switches, operating mechanisms, instrument transformers, and various protective devices. Switchgear can be classified in many ways, such as according to the installation method of the circuit breakers, cabinet structure, and voltage level. For example, based on different voltage levels, it can be divided into high-voltage switchgear, medium-voltage switchgear, and low-voltage switchgear. These switchgear are widely used in various applications such as power plants, substations, petrochemical plants, metallurgical steel rolling mills, light industry and textiles, factories and mines, residential communities, and high-rise buildings.

[0003] Traditional switchgear typically employs a fixed design with low component integration, meaning that the same function may require more independent equipment, thus occupying more space. Traditional switchgear also needs to consider ample maintenance and operating space for personnel to inspect, maintain, and operate the equipment, further increasing the overall footprint. Secondly, to meet safety standards and electrical clearance requirements, traditional switchgear may require maintaining large component spacing, which also increases space requirements. Therefore, with improvements and innovations, modular switchgear has been developed. Compared to traditional switchgear, modular switchgear features higher component integration, and its modular structure allows for a more compact and rational internal layout.

[0004] In existing technologies, although compact modular switchgear can save a lot of space, the compact arrangement of internal modules and the small space result in low heat dissipation efficiency after long-term high-load operation. Secondly, in conventional designs, heat is naturally dissipated through the heat dissipation holes at the top. However, in modular switchgear, the modules are stacked and compactly arranged, causing most of the heat generated by the lower modules to naturally rise to the upper modules. This results in the upper modules operating in a higher temperature environment, increasing the possibility of module failure.

[0005] To address the aforementioned issues, an innovative design for heat dissipation and protection was implemented based on the existing compact switchgear. Summary of the Invention

[0006] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide a compact protective switchgear to solve the problem of poor heat dissipation in existing compact modular switchgear, as mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a compact protective switch cabinet, comprising a cabinet body, a frame symmetrically arranged on the side wall of the cabinet body, modules symmetrically and equally spaced inside the cabinet body, a fixing plate fixed to the upper end of the cabinet body, and a top plate arranged on the top of the cabinet body; further comprising side cabinet plates and a rotating plate with drive modules distributed in a stepped manner, an installation assembly arranged between the side cabinet plates and the rotating plate for placing the modules, a drive assembly arranged at the bottom of the fixing plate for driving the rotating plate to rotate, a temperature detection assembly arranged at the bottom of the fixing plate for detecting the internal temperature of the cabinet body and triggering the drive assembly to act, and a lifting assembly arranged at the bottom of the fixing plate and cooperating with the drive assembly to make the top plate perform non-continuous lifting and lowering.

[0008] The two sets of frames are equipped with symmetrical side cabinets inside, and the bottom of the side cabinets is rotatably connected to the inner wall of the frame.

[0009] Preferably, the front end of the cabinet is provided with a cabinet door, and the upper outer wall of the cabinet is provided with heat dissipation mesh holes. The interior of the cabinet is provided with symmetrical rotating plates, and the bottom of the rotating plates is rotatably connected to the cabinet. The bottom of the top plate is fixed with a limiting post that slides with the fixed plate.

[0010] Preferably, the installation assembly includes a placement rack correspondingly disposed at the bottom of the module, and the outer wall of the placement rack is provided with a rotating connector between it and the side cabinet panel and the rotating plate, respectively. The rotating connector is used to make the placement rack rotatably connected to the side cabinet panel and the rotating plate, respectively.

[0011] Preferably, the drive assembly includes an electric push rod mounted on the bottom of the fixed plate, and the telescopic end of the electric push rod is symmetrically hinged with connecting rods on its outer wall. The bottom of the connecting rods is rotatably connected to the outer walls of the two sets of rotating plates respectively.

[0012] Preferably, the temperature detection component includes a cover fixedly disposed at the bottom of a fixed plate, a temperature sensing base fixed at the bottom of the cover, and a piston plate that slides with the cover inside the cover. A return spring is connected between the piston plate and the inner wall of the top of the cover, and an on / off switch is installed at the center of the top of the cover.

[0013] Preferably, an air inlet valve is provided on the side wall of the cover between the temperature sensing chassis and the piston plate, and an air hole is provided on the upper outer wall of the cover. The opening and closing switch is electrically connected to the electric push rod.

[0014] Preferably, the lifting assembly includes a top column fixed to the bottom of the top plate and slidingly engaged with the fixed plate. The top column has a movable groove inside, and a movable column that slidesly engages with the movable groove inside. A rack is fixed to the outer wall of the telescopic end of the electric push rod. A gear is provided at the bottom of the fixed plate between the movable column and the rack, and the outer walls of both the movable column and the rack are provided with tooth blocks that mesh with the gear.

[0015] Preferably, the outer wall of the top column is provided with a strip groove that communicates with the movable groove, and the strip groove is located outside the toothed block on the outer wall of the movable column.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) In this invention, a side cabinet panel, a rotating plate, a mounting component and a driving component are provided. When the module is working under high load and generates high heat, the electric push rod will push the two sets of rotating plates to rotate in opposite directions under the action of the driving component. After the rotating plate rotates, the modules distributed at equal angles on the left and right sides move away from each other to the sides respectively, and the horizontal movement distance of modules of different heights is different. Finally, the modules on both sides will present a stepped distribution, and the heat generated when the module is working will rise naturally, thereby reducing the heat influence between modules and achieving the effect of heat dissipation protection of the compact switch cabinet during operation.

[0018] (2) In this invention, a temperature detection component is set up. When the temperature inside the cabinet exceeds the normal temperature, the temperature sensing base will transfer the temperature to the heated expansion gas. The heated expansion gas expands between the temperature sensing base and the piston plate, pushing the piston plate to slide upward and press the on / off switch. When the temperature inside the cabinet returns to the normal temperature, the expansion amount of the heated expansion gas decreases, and the piston plate stops pressing the on / off switch, thereby adaptively controlling the drive component to operate according to the temperature inside the cabinet. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a cross-sectional perspective view of the present invention;

[0021] Figure 3 This is a cross-sectional plan view of the present invention;

[0022] Figure 4 This is a perspective view of some parts of the present invention;

[0023] Figure 5 This is a perspective sectional view of some parts of the present invention;

[0024] Figure 6 This is a perspective cross-sectional view of the temperature sensing component of the present invention;

[0025] Figure 7 For the present invention Figure 5 Enlarged view of point A in the image.

[0026] In the diagram: 1. Cabinet body; 2. Cabinet door; 3. Frame; 4. Side cabinet panel; 5. Rotating plate; 6. Placement rack; 7. Module; 8. Rotating connector; 9. Fixed plate; 10. Electric push rod; 11. Connecting rod; 12. Cover; 13. Temperature sensing chassis; 14. Piston plate; 15. Return spring; 16. On / off switch; 17. Top column; 18. Movable groove; 19. Movable column; 20. Rack; 21. Gear; 22. Top plate; 23. Limiting column. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1 to 7 The present invention provides a technical solution: a compact protective switch cabinet, comprising a cabinet body 1, a frame 3 symmetrically arranged on the side wall of the cabinet body 1, modules 7 symmetrically and equally spaced inside the cabinet body 1, a fixing plate 9 fixed to the upper end of the cabinet body 1, and a top plate 22 arranged on the top of the cabinet body 1, characterized in that: it further comprises side cabinet plates 4 and rotating plates 5 in a stepped arrangement for driving the modules 7, an installation assembly arranged between the side cabinet plates 4 and rotating plates 5 for placing the modules 7, a driving assembly arranged at the bottom of the fixing plate 9 for driving the rotating plate 5 to rotate, a temperature detection assembly arranged at the bottom of the fixing plate 9 for detecting the internal temperature of the cabinet body 1 and triggering the driving assembly to act, and a lifting assembly arranged at the bottom of the fixing plate 9 and cooperating with the driving assembly to make the top plate 22 perform non-continuous lifting and lowering;

[0029] The two sets of frames 3 have symmetrical side cabinets 4 inside, and the bottom of the side cabinets 4 are rotatably connected to the inner wall of the frame 3.

[0030] It should be noted that the top of the cabinet 1 has an opening below the top plate 22 to allow some of the heat inside the cabinet 1 to dissipate through the opening when the top plate 22 is raised. Additionally, openings matching the frame 3 are provided on both sides of the cabinet 1 to allow some modules 7 to be horizontally moved out of the cabinet 1 when the side cabinet panels 4 are rotated.

[0031] As an optional embodiment, the front end of the cabinet 1 is provided with a cabinet door 2, and the upper outer wall of the cabinet 1 is provided with a heat dissipation mesh. The interior of the cabinet 1 is provided with a symmetrical rotating plate 5, and the bottom of the rotating plate 5 is rotatably connected to the cabinet 1. The bottom of the top plate 22 is fixed with a limiting post 23 that slides with the fixed plate 9.

[0032] It should be noted that the cabinet door 2 and the ventilation mesh are conventional structures, and will not be described in detail here. The bottom of the rotating plate 5 is rotatably connected to the cabinet body 1 through a rotating shaft.

[0033] As an optional embodiment, the installation component includes a placement rack 6 correspondingly disposed at the bottom of the module 7. The outer wall of the placement rack 6 is provided with a rotating connector 8 between it and the side cabinet panel 4 and the rotating plate 5, respectively. The rotating connector 8 is used to make the placement rack 6 rotatably connected to the side cabinet panel 4 and the rotating plate 5, respectively.

[0034] It should be noted that during installation, the placement rack 6 is matched with the module 7. The module 7 is existing technology, and the rotating connector 8 is a conventional structure, so that the outer wall of the placement rack 6 is connected to the side cabinet panel 4 and the rotating plate 5 respectively in a hinged manner.

[0035] As an optional embodiment, the drive assembly includes an electric push rod 10 installed at the bottom of the fixed plate 9. The telescopic end of the electric push rod 10 is symmetrically hinged with connecting rods 11, and the bottom of the connecting rods 11 is rotatably connected to the outer walls of the two sets of rotating plates 5 respectively.

[0036] It should be noted that the electric push rod 10 has an internal spring reset mechanism, which facilitates retraction and reset after power failure. When extended, the telescopic end of the electric push rod 10 rotates through the end of the connecting rod 11, pushing the two sets of rotating plates 5 to rotate in opposite directions.

[0037] As an optional embodiment, the temperature detection assembly includes a cover 12 fixedly disposed at the bottom of the fixed plate 9, a temperature sensing base 13 fixedly disposed at the bottom of the cover 12, and a piston plate 14 slidably engaged with the cover 12 inside the cover 12. A return spring 15 is connected between the piston plate 14 and the inner wall of the top of the cover 12, and an on / off switch 16 is installed at the center of the top of the cover 12.

[0038] An air inlet valve is provided on the side wall of the cover 12 between the temperature sensing chassis 13 and the piston plate 14, and an air hole is provided on the upper outer wall of the cover 12. The on / off switch 16 is electrically connected to the electric push rod 10.

[0039] It should be noted that the heated expansion gas can be injected between the temperature sensing base 13 and the piston plate 14 through the air inlet valve. The temperature sensing base 13 can be made of copper or aluminum, which has good thermal conductivity. The heated expansion gas can be an inert gas such as helium, neon, or argon. These gases will expand significantly when heated to about 50°C. The normal operating temperature of the switch cabinet is not higher than 50°C. After the temperature sensing base 13 conducts heat to the heated expansion gas, the heated expansion gas expands between the temperature sensing base 13 and the piston plate 14, pushing the piston plate 14 to slide upward and press the on / off switch 16. At the same time, it compresses the return spring 15 and balances the pressure inside the cover 12 through the air holes on the outer wall of the cover 12.

[0040] As an optional embodiment, the lifting assembly includes a top column 17 fixed to the bottom of the top plate 22 and slidingly engaged with the fixed plate 9. The top column 17 has an internal movable groove 18, and the movable groove 18 has an internal movable column 19 that slides with it. The outer wall of the telescopic end of the electric push rod 10 is fixed with a rack 20. The bottom of the fixed plate 9 is provided with a gear 21 between the movable column 19 and the rack 20, and the outer walls of both the movable column 19 and the rack 20 are provided with tooth blocks that mesh with the gear 21.

[0041] The outer wall of the top column 17 is provided with a strip groove that communicates with the movable groove 18, and the strip groove is located outside the toothed block on the outer wall of the movable column 19.

[0042] It should be noted that during the extension of the telescopic end of the electric push rod 10, the telescopic end will also drive the rack 20 to move downward. Under the meshing action of the gear 21, the gear 21 will drive the movable column 19 to slide upward in the movable groove 18 of the top column 17 until the top of the movable column 19 moves to the top of the movable groove 18. The movable column 19 continues to move upward, which pushes the top column 17 to slide vertically upward on the fixed plate 9. Then the top column 17 pushes the top plate 22 to move upward a short distance.

[0043] Working principle: The working state of this compact protective switchgear can be divided into two aspects. On the one hand, when the cabinet 1 is at the normal operating temperature, such as... Figure 1 As shown, modules 7 are evenly spaced and symmetrically distributed. When modules 7 are not operating under high load, the heat generated naturally rises and dissipates through the heat dissipation mesh on the cabinet 1.

[0044] On the other hand, when module 7 is operating under high load, the heat generated raises the temperature inside cabinet 1. Once the set temperature for the heated expansion gas inside cover 12 is reached, the gas expands between the temperature-sensing base 13 and the piston plate 14, pushing the piston plate 14 upwards to press the on / off switch 16. Simultaneously, the return spring 15 is compressed, and the pressure inside cover 12 is balanced through the vents on the outer wall of cover 12. The on / off switch 16 then controls the electric push rod 10 to open, causing the telescopic end of the electric push rod 10 to extend by a fixed displacement. The electric push rod 10 has an internal spring return mechanism for easy... After power failure, the device retracts and resets. The telescopic end of the electric push rod 10 rotates through the end of the connecting rod 11, pushing the two sets of rotating plates 5 to rotate in opposite directions. Since the lower end of the rotating plate 5 is rotatably connected to the inner wall of the cabinet 1, and the lower end of the side cabinet plate 4 is rotatably connected to the inner wall of the frame 3, and the outer walls of both sides of the placement rack 6 are connected to the outer walls of the side cabinet plate 4 and the rotating plate 5 respectively through the rotating connector 8, after the rotating plate 5 rotates, the modules 7 distributed at equal angles on the left and right sides move away from each other to the sides, and the horizontal distance of the modules 7 at different heights is different. Finally, the modules 7 on both sides will present a stepped distribution.

[0045] Finally, during the extension of the telescopic end of the electric push rod 10, the telescopic end also drives the rack 20 to move downward. Under the meshing action of the gear 21, the gear 21 drives the movable column 19 to slide upward in the movable groove 18 of the top column 17 until the top of the movable column 19 moves to the top of the movable groove 18. The movable column 19 continues to move upward, pushing the top column 17 to slide vertically upward on the fixed plate 9. Then the top column 17 pushes the top plate 22 to move upward a short distance. At this time, the heat generated by the module 7 during operation will naturally rise. Due to the stepped distribution, the heat influence between the modules 7 can be reduced. The heat will eventually dissipate through the gap after the side cabinet plate 4 is opened inside the frame 3 and the gap after the top plate 22 is raised, thereby achieving the effect of heat dissipation and protection of the compact switch cabinet during operation. Conversely, when the temperature inside the cabinet 1 returns to the normal temperature, the expansion of the heated gas decreases, the piston plate 14 stops pressing the on / off switch 16, and the telescopic end of the electric push rod 10 resets and retracts after being disconnected. The switch cabinet returns to the normal state. Figure 1 Initial state.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A compact protective switch cabinet, comprising a cabinet body (1), a frame (3) symmetrically arranged on the side walls of the cabinet body (1), multi-layer modules (7) symmetrically and equally spaced inside the cabinet body (1), a fixing plate (9) fixed to the upper end of the cabinet body (1), and a top plate (22) arranged on the top of the cabinet body (1), characterized in that: It also includes side cabinets (4) and rotating plates (5) vertically arranged on both sides of the module (7), an installation component for placing the module (7) between the side cabinets (4) and rotating plates (5), a drive component for driving the rotating plates (5) to rotate away from each other at the bottom of the fixed plate (9), a temperature detection component for detecting the internal temperature of the cabinet (1) and triggering the drive component to operate at the bottom of the fixed plate (9), and a lifting component for non-continuous lifting of the top plate (22) in cooperation with the drive component at the bottom of the fixed plate (9). Two sets of rotating plates (5) are symmetrically arranged, and the bottom of the rotating plate (5) is connected to the cabinet (1) by a rotating connection; The two sets of frames (3) are provided with symmetrical side cabinets (4) inside, and the bottom of the side cabinets (4) is rotatably connected to the inner wall of the frame (3). The installation assembly includes a placement rack (6) correspondingly disposed at the bottom of the module (7). The outer wall of the placement rack (6) is provided with a rotating connector (8) between the side cabinet panel (4) and the rotating plate (5) respectively. The rotating connector (8) is used to make the placement rack (6) rotate between the side cabinet panel (4) and the rotating plate (5) respectively.

2. The compact protective switchgear according to claim 1, characterized in that: The cabinet (1) has a cabinet door (2) at the front end, and the upper outer wall of the cabinet (1) has a heat dissipation mesh. The bottom of the top plate (22) is fixed with a limiting post (23) that slides with the fixing plate (9).

3. A compact protective switchgear according to claim 1, characterized in that: The drive assembly includes an electric push rod (10) installed at the bottom of the fixed plate (9). The telescopic end of the electric push rod (10) is symmetrically hinged with connecting rods (11). The bottom of the connecting rods (11) is rotatably connected to the outer walls of the two sets of rotating plates (5).

4. A compact protective switchgear according to claim 1, characterized in that: The temperature detection assembly includes a cover (12) fixedly installed at the bottom of the fixed plate (9). A temperature sensing base (13) is fixed at the bottom of the cover (12), and a piston plate (14) is provided inside the cover (12) for sliding cooperation with it. A return spring (15) is connected between the piston plate (14) and the inner wall of the top of the cover (12). An on / off switch (16) is installed at the center of the top of the cover (12).

5. A compact protective switchgear according to claim 4, characterized in that: An air inlet valve is provided on the side wall of the cover (12) between the temperature sensing chassis (13) and the piston plate (14), and an air hole is provided on the upper outer wall of the cover (12). The opening and closing switch (16) and the electric push rod (10) are electrically connected.

6. A compact protective switchgear according to claim 3, characterized in that: The lifting assembly includes a top column (17) fixed to the bottom of the top plate (22) and slidingly engaged with the fixed plate (9). The top column (17) has an internal movable groove (18). The movable groove (18) has an internal movable column (19) that slides with it. The telescopic end of the electric push rod (10) is fixed with a rack (20). The bottom of the fixed plate (9) is located between the movable column (19) and the rack (20) and a gear (21) is provided. The outer walls of the movable column (19) and the rack (20) are both provided with tooth blocks that mesh with the gear (21).

7. A compact protective switchgear according to claim 6, characterized in that: The outer wall of the top column (17) is provided with a strip groove that communicates with the movable groove (18), and the strip groove is located outside the toothed block on the outer wall of the movable column (19).

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