Multi-plate high thermal conductivity vacuum circuit breaker

Abstract

The present invention discloses a multi-plate high thermal conductivity vacuum circuit breaker, including a circuit breaker cabinet for heat dissipation protection of the circuit breaker body, wherein a lifting rod is vertically limited and slidably connected to the upper portion of the circuit breaker cabinet, and a collection cover for collecting rainwater is passed through and fixedly connected to the top of the lifting rod, and a drop hole is provided on the top of the lifting rod to guide the rainwater collected in the collection cover to fall, and a guide groove is provided on the upper surface of the circuit breaker cabinet to guide the flow of rainwater falling from the drop hole, and a heat dissipation hole is provided on the side of the circuit breaker cabinet for transferring and circulating hot air in the circuit breaker cabinet. The present invention, through the coordinated use of the above structures, solves the problem that in actual use, due to the fact that in order to prevent rainwater from intruding in rainy weather outdoors, the sealing effect of the cabinet body such as the central cabinet is strengthened, thereby reducing the heat dissipation efficiency of the circuit breaker in the central cabinet and causing inconvenience in use.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, in particular to a multi-plate high thermal conductivity vacuum circuit breaker. Background Art

[0002] The "vacuum circuit breaker" is named because its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and arc extinguishing without maintenance, and is widely used in distribution networks.

[0003] Circuit breakers can be placed in central cabinets, double-layer cabinets and fixed cabinets to control and protect high-voltage electrical equipment;

[0004] To ensure heat dissipation efficiency, active heat dissipation and other methods are often used to enhance the heat dissipation effect of the circuit breakers installed in the central cabinet and other cabinets.

[0005] However, in actual use, in rainy weather outdoors, the sealing effect of the central cabinet and other cabinets will be strengthened to prevent rainwater from entering, thereby reducing the heat dissipation efficiency of the circuit breaker in the central cabinet, causing inconvenience in use. Summary of the Invention

[0006] The object of the present invention is to provide a multi-plate high thermal conductivity vacuum circuit breaker, which has the advantages of multi-plate heat dissipation and waterproof and rainproof, and solves the problems in the background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-plate high thermal conductivity vacuum circuit breaker, comprising a circuit breaker cabinet for heat dissipation protection of the circuit breaker body, a lifting rod being vertically limited and slidably connected above the circuit breaker cabinet, a collection cover for collecting rainwater being passed through and fixedly connected to the top of the lifting rod, a drop hole being provided on the top of the lifting rod for guiding the rainwater collected in the collection cover to fall, a guide groove being provided on the upper surface of the circuit breaker cabinet for guiding the flow of rainwater falling from the drop hole, heat dissipation holes being provided on the side of the circuit breaker cabinet for transferring and circulating hot air in the circuit breaker cabinet, and an extended waterproof plate being provided on the upper surface of the circuit breaker cabinet for waterproof protection of the heat dissipation holes.

[0008] Preferably, the lifting rod is provided with an auxiliary device for limiting the movement of the lifting rod, and the auxiliary device includes two tooth plates arranged on the surface of the lifting rod, and the teeth on the two tooth plates are in transmission meshing with gears, the inner wall of the gear is fixedly connected to shaft one, and both ends of the shaft one are fixedly connected to vertical plates fixed on the upper surface of the circuit breaker cabinet for rotation, and the bottom of the lifting rod is fixedly connected to a reset spring for returning the collection cover to its original position and moving upward, and the bottom of the reset spring is fixedly connected to the inner wall of the guide groove.

[0009] Preferably, the lifting rod is provided with a waterproof device for strengthening the extended protection of the extended waterproof plate according to the rainfall amount, the waterproof device includes a mounting seat 1 fixed on the surface of the lifting rod, the inner wall of the mounting seat 1 is rotatably connected to a connecting part 1, a transmission device is provided on the side of the connecting part 1 away from the mounting seat 1, and an end of the transmission device away from the connecting part 1 is fixedly connected to a connecting part 2, the connecting part 2 is rotatably connected to the mounting seat 2 on the fixed axis, the bottom of the mounting seat 2 is fixedly connected to a connecting bent rod, the surface of the connecting bent rod passes through and is fixedly connected to a horizontal sealing cover plate that slides horizontally within a limited position on the upper surface of the circuit breaker cabinet, the surfaces of the horizontal sealing cover plate and the extended waterproof plate are both fixedly connected to a vertical guard plate that allows rainwater to accumulate on the upper surface of the horizontal sealing cover plate, and the side of the horizontal sealing cover plate away from the lifting rod is rotatably connected to the extended waterproof plate.

[0010] Preferably, the connecting bent rod is also provided with a heat dissipation device, and the heat dissipation device includes a heat dissipation plate arranged in the circuit breaker cabinet, the bottom of the connecting bent rod passes through the upper surface of the circuit breaker cabinet and extends into the heat dissipation plate, the upper surface of the circuit breaker cabinet is provided with a through groove for the connecting bent rod to slide horizontally on the circuit breaker cabinet, and the outer contour of the connecting bent rod above the horizontal sealing cover plate is provided with a cavity extending to the bottom of the connecting bent rod, the bottom of the heat dissipation plate is penetrated and fixedly connected with a drain pipe extending into the cavity one, a heat dissipation cavity connecting the drain pipe and cavity one is provided in the heat dissipation plate, and the bottom of the drain pipe passes through the lower surface of the circuit breaker cabinet and extends outside the circuit breaker cabinet.

[0011] Preferably, there are two heat dissipation plates, and sealing air bags adapted to corresponding heat dissipation holes are fixedly connected to opposite back surfaces of the two heat dissipation plates.

[0012] Preferably, a second cavity communicating with the sealing airbag is provided on a side of the heat dissipation plate close to the sealing airbag, and a third cavity communicating with the second cavity is provided in the connecting bent rod.

[0013] Preferably, the transmission device includes a piston cylinder fixed on the connecting part one at one end away from the mounting seat one, an air guide tube is axially limited and slidably connected to the piston cylinder, one end of the air guide tube is fixedly connected to a sealing disk that is limited and slidably in the piston cylinder, an air guide hole connected to the air guide tube is provided on the sealing disk, the other end of the air guide tube is fixedly connected to the end of the connecting part two away from the mounting seat two, a compression spring is fixedly connected to the surface of the sealing disk, and the end of the compression spring away from the sealing disk is fixedly connected to the inner wall of the piston cylinder, and an arc-shaped air guide tube is connected between the cavity three and the air guide tube.

[0014] Preferably, the gear is also provided with a guiding device for causing one side of the extended waterproof plate to tilt up, and the guiding device includes a swing arm fixed on the surface of the gear, a movable through groove is provided on the surface of the swing arm, and a sliding block is connected to the movable through groove for limiting sliding, and the surface of the sliding block is fixedly connected to a transmission connecting plate fixed on the upper surface of the extended waterproof plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] First, the present invention has a built-in vacuum circuit breaker in the circuit breaker cabinet. The built-in vacuum circuit breaker consists of an arc extinguishing chamber, a mechanism box, a current transformer, a voltage transformer, and an isolating switch. The lifting rod slides up and down above the circuit breaker cabinet. On sunny days, the lifting rod can block and reflect the light shining on the circuit breaker cabinet. On rainy days, the collection cover can receive rainwater falling on the upper surface of the circuit breaker cabinet. In actual use, the shape of the collection cover can be various as long as it can receive rainwater. By opening the upper and lower drop holes of the lifting rod, the rainwater collected in the collection cover can fall through the drop holes and be guided by the circuit breaker cabinet. The groove can directly receive rainwater falling through the drop hole, and the direction of the guide groove can directly guide the rainwater in the guide groove to flow to the surface without the heat dissipation hole, thereby preventing rainwater from intruding into the circuit breaker cabinet. Then, through the coverage and flow of rainwater, the heat accumulated in the circuit breaker cabinet due to the enhanced sealing effect can be transferred through heat conduction; through the opening of the heat dissipation hole, the heat generated in the circuit breaker cabinet in the daily working environment can be transferred through air convection. By extending the setting of the waterproof plate, the rainfall falling on the surface of the circuit breaker cabinet with the heat dissipation hole can be reduced as much as possible from the top.

[0017] 2. The present invention solves the problem that, in actual use, the sealing effect of the central cabinet and other cabinets is strengthened to prevent rainwater from intruding during rainy weather outdoors, thereby reducing the heat dissipation efficiency of the circuit breaker in the central cabinet and causing inconvenience in use through the coordinated use of the above structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of the mechanism of the present invention;

[0019] Figure 2 A top view of the lifting rod of the present invention;

[0020] Figure 3 A perspective view of a vertical plate of the present invention;

[0021] Figure 4 It is a front cross-sectional view of the connecting bent rod of the present invention;

[0022] Figure 5 A perspective view of the piston cylinder of the present invention;

[0023] Figure 6 It is a front cross-sectional view of the piston cylinder of the present invention;

[0024] Figure 7 is a perspective view of the gear of the present invention;

[0025] Figure 8 A three-dimensional diagram of the heat dissipation plate inside the circuit breaker cabinet of the present invention;

[0026] Figure 9 This is a three-dimensional view of the extended waterproof plate and the horizontal sealing cover plate of the present invention when they are matched.

[0027] In the figure: 1. Circuit breaker cabinet; 2. Lifting rod; 3. Collecting cover; 4. Drop hole; 5. Guide groove; 6. Heat dissipation hole; 7. Extended waterproof plate; 8. Tooth plate; 9. Gear; 10. Shaft 1; 11. Vertical plate; 12. Mounting seat 1; 13. Connection part 1; 14. Connection part 2; 15. Mounting seat 2; 16. Connecting bent rod; 17. Horizontal sealing cover; 171. Vertical guard plate; 18. Reset spring; 19. Heat dissipation plate; 20. Cavity 1; 21. Drain pipe; 211. Heat dissipation cavity; 22. Sealing airbag; 23. Cavity 2; 24. Cavity 3; 241. Arc air duct; 25. Piston cylinder; 26. Air duct; 27. Sealing disk; 28. Air duct; 29. ​​Compression spring; 30. Swing arm; 31. Movable through groove; 32. Sliding block; 33. Transmission connecting plate. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] The present invention provides a technical solution: a multi-plate high thermal conductivity vacuum circuit breaker, comprising a circuit breaker cabinet 1 for heat dissipation protection of the circuit breaker body, the circuit breaker cabinet 1 having a built-in vacuum circuit breaker, the built-in vacuum circuit breaker consisting of an arc extinguishing chamber, a mechanism box, The circuit breaker cabinet 1 is composed of a current transformer, a voltage transformer, and an isolating switch. The circuit breaker cabinet 1 is integrated with the built-in vacuum circuit breaker. The upper part of the circuit breaker cabinet 1 is vertically limited and slidably connected with a lifting rod 2. The lifting rod 2 slides up and down above the circuit breaker cabinet 1. The top of the lifting rod 2 passes through and is fixedly connected with a collecting cover 3 for collecting rainwater. On sunny days, the lifting rod 2 can block and reflect the light shining on the circuit breaker cabinet 1. On rainy days, the collecting cover 3 can collect rainwater falling on the upper surface of the circuit breaker cabinet 1. In actual use, the shape of the collecting cover 3 can be various as long as it can collect rainwater. A drop hole 4 is provided on the top of the lifting rod 2 to guide the rainwater collected in the collecting cover 3 to fall. By opening the drop hole 4 on the lifting rod 2, the rainwater collected in the collecting cover 3 can fall through the drop hole 4. The upper surface of the circuit breaker cabinet 1 is provided with a rainwater collecting cover 3 to flow from the drop hole 4. The guide groove 5 is provided on the circuit breaker cabinet 1, so that rainwater falling through the drop hole 4 can be directly received, and the direction of the guide groove 5 can directly guide the rainwater in the guide groove 5 to flow to the surface without the heat dissipation hole 6, thereby preventing rainwater from intruding into the circuit breaker cabinet 1. Then, through the coverage and flow of rainwater, the heat accumulated in the circuit breaker cabinet 1 due to the enhanced sealing effect can be transferred through heat conduction; the side of the circuit breaker cabinet 1 is provided with a heat dissipation hole 6 for transferring and circulating hot air in the circuit breaker cabinet 1. Through the opening of the heat dissipation hole 6, the heat generated in the circuit breaker cabinet 1 under daily working conditions can be transferred through air convection. The upper surface of the circuit breaker cabinet 1 is provided with an extended waterproof plate 7 for waterproof protection of the heat dissipation hole 6. Through the provision of the extended waterproof plate 7, the rainwater falling on the surface of the circuit breaker cabinet 1 with the heat dissipation hole 6 can be reduced as much as possible from the top.

[0031] Example 2

[0032] On the basis of Example 1, further: the lifting rod 2 is provided with an auxiliary device for limiting the movement of the lifting rod 2, and the auxiliary device includes two tooth plates 8 arranged on the surface of the lifting rod 2, and the teeth on the two tooth plates 8 are driven and meshed with gears 9. The inner wall of the gear 9 is fixedly connected to a shaft 10, and both ends of the shaft 10 are fixedly connected to a vertical plate 11 fixed on the upper surface of the circuit breaker cabinet 1. The bottom of the lifting rod 2 is fixedly connected to a reset spring 18 for returning the collection cover 3 to its original position and moving upward, and the bottom of the reset spring 18 is fixedly connected to the inner wall of the guide groove 5.

[0033] refer to Figure 1 and Figure 3 .

[0034] The vertical plate 11 provides support for the rotation of the shaft 10. In the unloaded state where the collection cover 3 is not filled with rainwater, the return spring 18 cooperates with the two gears 9 to support the lifting rod 2 and the collection cover 3.

[0035] With the increase of rainfall, when the flow rate discharged downward from the drop hole 4 is constant, the rainwater in the collection cover 3 will continue to increase, thereby causing the overall weight of the collection cover 3 to continue to increase, so that the reset spring 18 is compressed, the collection cover 3 and the lifting rod 2 are able to descend as a whole, and the two gears 9 can smoothly carry their respective shafts 10 to rotate on the corresponding vertical plate 11. In actual use, additional brackets can be used to achieve movement support for the lifting rod 2 during the lifting process.

[0036] Once the accumulated water in the collecting cover 3 is reduced, the collecting cover 3 and the lifting rod 2 are continuously reset and moved upward under the elastic force of the reset spring 18 .

[0037] Example 3

[0038] On the basis of the second embodiment, further steps are as follows:

[0039] The lifting rod 2 is provided with a waterproof device for strengthening the extended protection of the extended waterproof plate 7 according to the amount of rainfall. The waterproof device includes a mounting seat 12 fixed on the surface of the lifting rod 2, and the inner wall of the mounting seat 12 is fixedly rotatably connected to a connecting part 13. A transmission device is provided on the side of the connecting part 13 away from the mounting seat 12, and a connecting part 2 14 is fixedly connected to the end of the transmission device away from the connecting part 13. The connecting part 2 14 is fixedly rotatably connected to a mounting seat 2 15, and the bottom of the mounting seat 2 15 is fixedly connected to a connecting bent rod 16. The surface of the connecting bent rod 16 passes through and is fixedly connected to a horizontal sealing cover plate 17 that slides horizontally within a limited position on the upper surface of the circuit breaker cabinet 1. The surfaces of the horizontal sealing cover plate 17 and the extended waterproof plate 7 are fixedly connected to a vertical guard plate 171 that allows rainwater to accumulate on the upper surface of the horizontal sealing cover plate 17. The side of the horizontal sealing cover plate 17 away from the lifting rod 2 is rotatably connected to the extended waterproof plate 7.

[0040] refer to Figure 1 、 Figure 3 and Figure 5 .

[0041] As can be seen from the previous content, with the increase in rainfall, the lifting rod 2 will continue to move downward, thereby causing the mounting seat 12 and the connecting part 13 to move downward synchronously. Under the rotation cooperation of the transmission device, the connecting part 2 14, the mounting seat 2 15, the connecting bent rod 16 and the horizontal sealing cover 17 on the connecting bent rod 16 slide on the circuit breaker cabinet 1 in the horizontal direction away from the lifting rod 2, and finally the horizontal sealing cover 17 is pushed to a more extended position on the circuit breaker cabinet 1, which can achieve a better waterproof effect on the heat dissipation hole 6.

[0042] With the provision of the vertical guard plate 171 on the horizontal sealing cover plate 17 , rainwater falling on the horizontal sealing cover plate 17 can be accumulated to prepare for subsequent heat dissipation.

[0043] Example 4

[0044] On the basis of the third embodiment, further steps are as follows:

[0045] The connecting rod 16 is also provided with a heat dissipation device, which includes a heat dissipation plate 19 disposed within the circuit breaker cabinet 1. The bottom of the connecting rod 16 penetrates the upper surface of the circuit breaker cabinet 1 and extends into the heat dissipation plate 19. The upper surface of the circuit breaker cabinet 1 is provided with a through slot for the connecting rod 16 to slide horizontally within the circuit breaker cabinet 1. The outer contour of the connecting rod 16, above the horizontal sealing cover 17, is provided with a cavity 20 extending to the bottom of the connecting rod 16. A drainage pipe 21 extending into cavity 20 is penetrated and fixedly connected to the bottom of the heat dissipation plate 19. A heat dissipation cavity 211 is defined within the heat dissipation plate 19, connecting the drainage pipe 21 and cavity 20. The bottom of the drainage pipe 21 penetrates the lower surface of the circuit breaker cabinet 1 and extends outside the circuit breaker cabinet 1. The two heat dissipation plates 19 form a multi-plate structure with high thermal conductivity.

[0046] refer to Figure 1 、 Figure 3 and Figure 8 .

[0047] The through groove on the upper surface of the circuit breaker cabinet 1 is provided so that the connecting bent rod 16 can slide horizontally smoothly.

[0048] Along with the horizontal sliding of the connecting bent rod 16 mentioned above, the heat dissipation plate 19 at the bottom of the connecting bent rod 16 will slide horizontally synchronously during this process until the surface of the heat dissipation plate 19 is in contact with the inner wall of the circuit breaker cabinet 1. When the surface of the heat dissipation plate 19 is in contact with the inner wall of the circuit breaker cabinet 1, the heat dissipation holes 6 opened on the circuit breaker cabinet 1 will be sealed once, further preventing the intrusion of external rainwater. Secondly, after the heat dissipation plate 19 is in close contact with the inner wall of the circuit breaker cabinet 1, the heat conduction efficiency can be improved, thereby realizing rapid heat dissipation.

[0049] For further reference, Figure 4Excess rainwater from the outside can be discharged downward through the cavity 20 and the drain pipe 21. During this process, a large amount of heat is accumulated in the circuit breaker cabinet 1 due to the enhanced sealing effect. The heat dissipation plate 19 fits tightly with the inside of the circuit breaker cabinet 1, so that a large amount of heat can be transferred to the heat dissipation plate 19. The opening of the cavity 20 allows the heat dissipation cavity 211 to receive a large amount of rainwater. The rainwater can absorb the heat on the heat dissipation plate 19 and transfer it accordingly. Finally, the rainwater that has absorbed excess heat is discharged through the drain pipe 21, thereby further improving the heat dissipation effect.

[0050] Furthermore, there are two heat dissipation panels 19 , and the opposite back surfaces of the two heat dissipation panels 19 are fixedly connected with sealing air bags 22 that are adapted to the corresponding heat dissipation holes 6 .

[0051] By setting two heat dissipation panels 19, a multi-panel setting is achieved, which further improves the heat dissipation effect. Secondly, the setting of the sealing airbag 22 on the heat dissipation panel 19 can further perform targeted sealing on the heat dissipation hole 6 to further prevent the intrusion of rainwater.

[0052] Furthermore, a second cavity 23 communicating with the sealing airbag 22 is defined on one side of the heat dissipation plate 19 close to the sealing airbag 22 , and a third cavity 24 communicating with the second cavity 23 is defined in the connecting bent rod 16 .

[0053] By setting the sealing airbag 22, the sealing effect can be enhanced. When the cavity three 24 is filled with high-pressure gas, the sealing airbag 22 entering the heat dissipation hole 6 is expanded, which can further fully seal the heat dissipation hole 6 and better withstand severe weather. Secondly, in a low temperature environment, it can also avoid the situation of loose sealing caused by thermal expansion and contraction.

[0054] The source of high-pressure gas will be introduced later.

[0055] Example 5

[0056] On the basis of Example 4, further: the transmission device includes a piston cylinder 25 fixed on the connecting part 13 at one end away from the mounting seat 12, and an air guide tube 26 is axially limited and slidingly connected in the piston cylinder 25, one end of the air guide tube 26 is fixedly connected to a sealing disk 27 that slides within the piston cylinder 25, and an air guide hole 28 connected to the air guide tube 26 is provided on the sealing disk 27. The other end of the air guide tube 26 is fixedly connected to the end of the connecting part 2 14 away from the mounting seat 2 15, and a compression spring 29 is fixedly connected to the surface of the sealing disk 27. The end of the compression spring 29 away from the sealing disk 27 is fixedly connected to the inner wall of the piston cylinder 25, and an arc-shaped air guide tube 241 is connected between the cavity 3 24 and the air guide tube 26.

[0057] refer to Figure 5and Figure 6 After the heat dissipation plate 19 in the current article is in contact with the inner wall of the circuit breaker cabinet 1, as the collection cover 3 and the lifting rod 2 continue to move downward, the air guide tube 26 will be gradually stored in the piston cylinder 25. As the volume in the piston cylinder 25 is continuously reduced, the air therein will enter the cavity three 24 through the air guide hole 28, the air guide tube 26, and the arc-shaped air guide tube 241, and then finally enter the cavity two 23, so that the sealing air bag 22 connected to the cavity two 23 continues to expand and fill, thereby further sealing the heat dissipation hole 6.

[0058] Furthermore, the gear 9 is also provided with a guiding device for causing the extended waterproof plate 7 to tilt on one side. The guiding device includes a swing arm 30 fixed on the surface of the gear 9. A movable through groove 31 is provided on the surface of the swing arm 30, and a sliding block 32 is connected to the movable through groove 31 for limited sliding connection. The surface of the sliding block 32 is fixedly connected to a transmission connecting plate 33 fixed on the upper surface of the extended waterproof plate 7.

[0059] Reference image Figure 7 and Figure 1 , along with the rotation of the gear 9, the swing arm 30 will rotate synchronously, and through the transmission of the sliding block 32 and the transmission connecting plate 33, the side of the extended waterproof plate 7 away from the horizontal sealing cover plate 17 is unilaterally tilted. The extended waterproof plate 7 and the horizontal sealing cover plate 17 can be connected by a hinge or other rotating connection method, and a rubber gasket is used at the hinge part to enhance the sealing effect;

[0060] With the movable through slot 31 opened, the extended waterproof plate 7 is smoothly tilted up during the subsequent rotation of the swing arm 30, thereby strengthening the guidance of rainwater to fall on the horizontal sealing cover plate 17, and then making it easier for the rainwater accumulated on the horizontal sealing cover plate 17 to fall through the cavity 20.

[0061] The vertical guard plate 171 on the extended waterproof plate 7 is adaptively provided with an inclined surface to facilitate the smooth rotation of the extended waterproof plate 7 and ensure the sealed connection between the vertical guard plates 171 of the extended waterproof plate 7 and the horizontal sealing cover plate 17.

[0062] Working principle: When the multi-plate high thermal conductivity vacuum circuit breaker is in use, a vacuum circuit breaker is built into the circuit breaker cabinet 1. The built-in vacuum circuit breaker consists of an arc extinguishing chamber, a mechanism box, a current transformer, a voltage transformer, and an isolating switch. The lifting rod 2 slides up and down above the circuit breaker cabinet 1. On sunny days, the lifting rod 2 can block and reflect the light shining on the circuit breaker cabinet 1. On rainy days, the collecting cover 3 can receive rainwater falling on the upper surface of the circuit breaker cabinet 1. In actual use, the shape of the collecting cover 3 can be various as long as it can receive rainwater. By opening the upper and lower drop holes 4 on the lifting rod 2, the rainwater collected in the collecting cover 3 can fall through the drop holes 4. By opening the guide groove 5 on the circuit breaker cabinet 1, the rainwater can be directly received through the drop holes 4, and the direction of the guide groove 5 can directly guide the rainwater in the guide groove 5 to flow to the surface without the heat dissipation holes 6, thereby preventing the rainwater from intruding into the circuit breaker cabinet 1. Then, the rainwater can flow under the cover of the guide groove 5, and the heat accumulated in the circuit breaker cabinet 1 due to the enhanced sealing effect can be transferred through heat conduction. The heat dissipation holes 6 can transfer the heat generated in the circuit breaker cabinet 1 under normal working conditions through air convection. The provision of the extended waterproof plate 7 can reduce the amount of rainwater falling on the surface of the circuit breaker cabinet 1 with the heat dissipation holes 6 from the top as much as possible.

[0063] The present invention solves the problem that, in actual use, the sealing effect of the cabinet body such as the central cabinet is strengthened to prevent rainwater from intruding during rainy weather outdoors, thereby reducing the heat dissipation efficiency of the circuit breaker in the central cabinet and causing inconvenience in use through the coordinated use of the above structures.

[0064] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and drawings can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the conventional means mature in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description will be given here.

[0065] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Multi-plate high thermal conductivity vacuum circuit breaker, characterized by: The invention comprises a circuit breaker cabinet (1) for heat dissipation protection of a circuit breaker body, a lifting rod (2) is vertically limited and slidably connected above the circuit breaker cabinet (1), a collecting cover (3) for collecting rainwater is passed through and fixedly connected to the top of the lifting rod (2), a drop hole (4) is provided on the top of the lifting rod (2) for guiding the rainwater collected in the collecting cover (3) to fall, a guide groove (5) is provided on the upper surface of the circuit breaker cabinet (1) for guiding the rainwater falling from the drop hole (4), a heat dissipation hole (6) for transferring and circulating hot air in the circuit breaker cabinet (1) is provided on the side of the circuit breaker cabinet (1), and an extended waterproof plate (7) is provided on the upper surface of the circuit breaker cabinet (1) for waterproof protection of the heat dissipation hole (6); The lifting rod (2) is provided with an auxiliary device for limiting the movement of the lifting rod (2), and the auxiliary device includes two tooth plates (8) arranged on the surface of the lifting rod (2), and the teeth on the two tooth plates (8) are both driven and meshed with gears (9), and the inner wall of the gear (9) is fixedly connected to a shaft (10), and both ends of the shaft (10) are fixedly connected to a vertical plate (11) fixed to the upper surface of the circuit breaker cabinet (1), and the bottom of the lifting rod (2) is fixedly connected to a reset spring (18) for resetting and moving the collection cover (3), and the bottom of the reset spring (18) is fixedly connected to the inner wall of the guide groove (5); The lifting rod (2) is provided with a waterproof device for strengthening the extended protection of the waterproof plate (7) according to the amount of rainfall, and the waterproof device includes a mounting seat (12) fixed on the surface of the lifting rod (2), the inner wall of the mounting seat (12) is connected to a connecting part (13) in a fixed axis rotation, and a transmission device is provided on the side of the connecting part (13) away from the mounting seat (12), and a connecting part (2) (14) is fixedly connected to the end of the transmission device away from the connecting part (13), and the connecting part (2) (14) is connected to the mounting seat (2) in a fixed axis rotation. (15), the bottom of the second mounting seat (15) is fixedly connected with a connecting bent rod (16), the surface of the connecting bent rod (16) passes through and is fixedly connected with a horizontal sealing cover plate (17) that slides horizontally on the upper surface of the circuit breaker cabinet (1), the surfaces of the horizontal sealing cover plate (17) and the extended waterproof plate (7) are both fixedly connected with a vertical guard plate (171) that allows rainwater to accumulate on the upper surface of the horizontal sealing cover plate (17), and the side of the horizontal sealing cover plate (17) away from the lifting rod (2) is rotatably connected to the extended waterproof plate (7); The connecting bent rod (16) is also provided with a heat dissipation device, and the heat dissipation device includes a heat dissipation plate (19) arranged in the circuit breaker cabinet (1). The bottom of the connecting bent rod (16) passes through the upper surface of the circuit breaker cabinet (1) and extends into the heat dissipation plate (19). The upper surface of the circuit breaker cabinet (1) is provided with a through groove for the connecting bent rod (16) to slide horizontally on the circuit breaker cabinet (1). The connecting bent rod (16) is located on the horizontal sealing cover (1). 7) A cavity (20) extending to the bottom of the connecting bent rod (16) is provided on the outer contour above, the bottom of the heat dissipation plate (19) is penetrated and fixedly connected with a drainage pipe (21) extending into the cavity (20), a heat dissipation cavity (211) connecting the drainage pipe (21) and the cavity (20) is provided in the heat dissipation plate (19), and the bottom of the drainage pipe (21) penetrates the lower surface of the circuit breaker cabinet (1) and extends to the outside of the circuit breaker cabinet (1); There are two heat dissipation panels (19), and the opposite back surfaces of the two heat dissipation panels (19) are fixedly connected with sealing air bags (22) that are adapted to the corresponding heat dissipation holes (6).

2. The multi-plate high thermal conductivity vacuum circuit breaker according to claim 1, characterized in that: A second cavity (23) communicating with the sealing airbag (22) is provided on one side of the heat dissipation plate (19) close to the sealing airbag (22), and a third cavity (24) communicating with the second cavity (23) is provided in the connecting bent rod (16).

3. The multi-plate high thermal conductivity vacuum circuit breaker according to claim 2, characterized in that: The transmission device includes a piston cylinder (25) fixed on one end of the connecting portion (13) away from the mounting seat (12), an air guide tube (26) is axially limited and slidably connected in the piston cylinder (25), one end of the air guide tube (26) is fixedly connected to a sealing disk (27) that is limited and slidably in the piston cylinder (25), an air guide hole (28) connected to the air guide tube (26) is provided on the sealing disk (27), the other end of the air guide tube (26) is fixedly connected to one end of the connecting portion (14) away from the mounting seat (15), a compression spring (29) is fixedly connected to the surface of the sealing disk (27), the end of the compression spring (29) away from the sealing disk (27) is fixedly connected to the inner wall of the piston cylinder (25), and an arc-shaped air guide tube (241) is connected between the cavity (24) and the air guide tube (26).

4. The multi-plate high thermal conductivity vacuum circuit breaker according to claim 1, characterized in that: The gear (9) is also provided with a guiding device for causing the extended waterproof plate (7) to tilt unilaterally, the guiding device comprising a swing arm (30) fixed on the surface of the gear (9), a movable through groove (31) being provided on the surface of the swing arm (30), and a sliding block (32) being connected in a limited sliding manner in the movable through groove (31), and a transmission connecting plate (33) fixed on the upper surface of the extended waterproof plate (7) being fixedly connected to the surface of the sliding block (32).

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