A fast-breaking high-voltage vacuum circuit breaker

Abstract

The present invention relates to the technical field of high-voltage vacuum circuit breakers, and in particular to a fast-breaking high-voltage vacuum circuit breaker, comprising a circuit breaker body, a stainless steel frame fixedly mounted on the bottom end of the circuit breaker body, a plurality of vacuum cylinders provided on one side of the top of the stainless steel frame, a bellows inserted and connected on one side of the top of the circuit breaker body, a circuit board fixedly mounted on one side of the inner wall of the circuit breaker body, two partition plates provided inside the circuit breaker body, one side of which is provided with a second groove, and the present invention places some devices for tripping on the top of the auxiliary frame by providing an auxiliary frame, an auxiliary block, an auxiliary plate, a fixing column, a limiting column and a clamping plate, wherein the device is located in the middle of the two clamping plates, and the four telescopic columns gradually telescope toward the inside of the four support columns, thereby effectively buffering the auxiliary frame and preventing the device from shaking too much.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage vacuum circuit breakers, and in particular to a fast-breaking high-voltage vacuum circuit breaker. Background Art

[0002] The "vacuum circuit breaker" gets its name from the fact that both its arc-extinguishing medium and the insulating medium in the contact gap after arc extinguishing are high vacuum. It boasts the advantages of small size, light weight, suitability for frequent operation, and the fact that arc extinguishing requires no maintenance. It is widely used in distribution networks. Vacuum circuit breakers are indoor power distribution devices in 3-10 kV, 50 Hz three-phase AC systems. They can be used to protect and control electrical equipment in industrial and mining enterprises, power plants, and substations. They are particularly suitable for applications requiring oil-free operation, minimal maintenance, and frequent operation. Circuit breakers can be deployed in central cabinets, double-layer cabinets, and fixed cabinets to control and protect high-voltage electrical equipment. Rated currents reach 5000 A, with a breaking current of 50 kA. Voltages up to 35 kV have been developed, and the breaking capacity of vacuum circuit breakers has reached 100 kA. China began developing vacuum switches in 1958. In 1960, Xi'an Jiaotong University and the Xi'an Switch and Rectifier Factory jointly developed the first 6.7 kV vacuum switches with a breaking capacity of 600 A. 10 kV versions were subsequently developed.

[0003] However, the existing high-voltage vacuum circuit breakers still have some shortcomings:

[0004] 1. When the circuit breaker is working, the tripping area installed inside it will generate a lot of heat. The bottom surface of the device used for the tripping is in direct contact with the surface of the circuit breaker. The heat generated by the device cannot be discharged in time. There are many types of device specifications, and it is impossible to limit them for devices of different diameters.

[0005] 2. Circuit breakers are often equipped with heat dissipation holes for heat dissipation. The vibration frequency of the circuit breaker is relatively high, which causes the components installed inside to shake constantly. Over time, they will become loose and cannot effectively reduce the vibration of the installed components. The ventilation effect of the vacuum circuit breaker is poor and the interior is relatively sealed. Summary of the Invention

[0006] The purpose of the present invention is to provide a fast-breaking high-voltage vacuum circuit breaker to solve the problems proposed in the above-mentioned background technology, such as the heat generated by the device cannot be discharged in time, the device has a large variety of specifications and cannot be limited for devices of different diameters, which will become loose over time, the inability to effectively achieve vibration reduction for the installed devices, and the poor ventilation effect of the vacuum circuit breaker.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A fast-breaking high-voltage vacuum circuit breaker includes a circuit breaker body, a stainless steel frame fixedly mounted on the bottom end of the circuit breaker body, a plurality of vacuum cylinders provided on one side of the top of the stainless steel frame, a bellows inserted and connected to one side of the top of the circuit breaker body, a circuit board fixedly mounted on one side of the inner wall of the circuit breaker body, two partition plates provided inside the circuit breaker body, a second groove provided on one side of one of the partition plates, a first groove provided on one side of the inner wall of the circuit breaker body, auxiliary blocks slidably mounted inside the first and second grooves, an auxiliary plate fixedly mounted on one side of each of the two auxiliary blocks, the auxiliary frame inserted and connected to the bottom ends of the two auxiliary plates, and a plurality of first heat dissipation holes provided on the top of the auxiliary frame.

[0009] As a preferred technical solution of the present invention, telescopic columns are inserted and connected on both sides of the bottom ends of the two auxiliary plates, four support columns are fixedly installed at the bottom end of the circuit breaker body, and the bottom ends of the four telescopic columns are respectively inserted and connected with the top ends of the four support columns.

[0010] As a preferred technical solution of the present invention, springs are wound around the outside of the four telescopic columns, one end of the four springs is fixedly connected to the top of the four support columns respectively, and the positions of two adjacent support columns are corresponding.

[0011] As a preferred technical solution of the present invention, a plurality of fixed columns are fixedly installed inside one of the auxiliary plates, and one end of the corresponding plurality of fixed columns is movably sleeved with a movable block, and the top ends of the two movable blocks are interspersed with heat sinks.

[0012] As a preferred technical solution of the present invention, extension plates are fixedly installed on both sides of the top of the auxiliary frame, one side of the two extension plates is interspersed with a pushing plate, one side of the two pushing plates is interspersed with a clamping plate, and both sides of the top of the two extension plates are interspersed with limiting columns.

[0013] As a preferred technical solution of the present invention, a plurality of limiting grooves are provided at the top ends of the two pushing plates, and the four limiting columns are respectively engaged with the plurality of limiting grooves, and the positions of the two clamping plates are corresponding.

[0014] As a preferred technical solution of the present invention, a motor seat is fixedly installed on the front of the circuit breaker body, a motor is fixedly installed on the top of the motor seat, a processing groove is opened at the bottom end of the circuit breaker body, a two-way threaded rod is rotatably connected inside the processing groove, one end of the two-way threaded rod is transmission-connected to the output shaft of the motor, a straight plate is inserted into the bottom end of one of the auxiliary plates, and a power switch is fixedly installed inside one of the partition plates.

[0015] As a preferred technical solution of the present invention, two auxiliary sleeves are threadedly sleeved on one end of the bidirectional threaded rod, the tops of the two auxiliary sleeves are inserted and connected with connecting columns, the tops of the two connecting columns are inserted and connected with connecting frames, and multiple miniature fans are arranged inside the two connecting frames, and the multiple miniature fans are electrically connected to the external power supply through a power switch.

[0016] As a preferred technical solution of the present invention, a slot is provided inside the circuit breaker body, two clamping blocks are snap-connected on both sides of the slot, a heat dissipation pad is inserted through the bottom ends of the four clamping blocks, a plurality of second heat dissipation holes are provided on the top of the heat dissipation pad, and two mounting bases are snap-connected inside the circuit breaker body, and silicone pads are inserted through both sides of the tops of the two mounting bases.

[0017] The present invention has at least the following beneficial effects:

[0018] 1. The present invention is provided with an auxiliary frame, an auxiliary block, an auxiliary plate, a fixing column, a limiting column and a clamping plate, so that some devices for opening the switch are placed on the top of the auxiliary frame, and the device is located in the middle position of the two clamping plates, and the two pushing plates are relatively movable, thereby driving the two clamping plates to move relative to each other. One side of the two clamping plates will gradually approach the surface of the device. After the two are fitted together, the four limiting columns are pressed inward in turn, and the bottom ends of the four limiting columns will be embedded in the corresponding four limiting grooves for engagement, thereby limiting the two clamping plates and ensuring the stability of the device after installation. After the device is placed on the top of the auxiliary frame, it will apply pressure to the auxiliary frame, thereby transmitting force to the four telescopic columns, and the four telescopic columns gradually telescope and move toward the inside of the four supporting columns, thereby effectively buffering the auxiliary frame and avoiding excessive shaking of the device.

[0019] 2. The present invention is equipped with a motor, a bidirectional threaded rod, a micro fan, a heat dissipation pad, a silicone pad and a power switch to move two heat sinks to a position close to the device. The two movable blocks will gradually move at one end of the multiple fixed columns. Since the surfaces of the heat sink and the heat dissipation pad are coated with thermal grease, the heat emitted by the device is more effectively conducted to the heat sink and then dissipated into the surrounding air through the heat sink. Starting the motor can drive the bidirectional threaded rod to rotate, thereby driving the two auxiliary sleeves to move. When the auxiliary plate moves downward, it will drive the straight plate to squeeze and touch the power switch, thereby driving the multiple micro fans electrically connected thereto to work. The wind blown by the micro fans will be transmitted to the bottom of the device through the multiple first heat dissipation holes, thereby dissipating the heat at the bottom of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a front view structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of a partial bottom view of the structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the partial front view of the heat dissipation pad of the present invention;

[0024] Figure 4 For the present invention Figure 1 Enlarged view of point A in the middle;

[0025] Figure 5 It is a schematic side view of a partial structure of a bidirectional threaded rod of the present invention;

[0026] Figure 6 Schematic diagram of the side view of a part of the micro fan of the present invention;

[0027] Figure 7 It is a partial front view structural schematic diagram of the present invention.

[0028] In the figure: 1. Circuit breaker body; 2. Vacuum cylinder; 3. Stainless steel frame; 4. Bellows; 5. Circuit board; 6. First groove; 7. Auxiliary block; 8. Auxiliary plate; 9. Telescopic column; 10. Support column; 11. Spring; 12. Auxiliary frame; 13. First heat dissipation hole; 14. Dividing plate; 15. Second groove; 16. Heat sink; 17. Movable block; 18. Fixed column; 19. Extension plate; 20. Limit column; 21. Clamping plate; 22. Pushing plate; 23. Limiting groove; 24. Motor base; 25. Motor; 26. Bidirectional threaded rod; 27. Auxiliary sleeve; 28. Connecting column; 29. ​​Connecting frame; 30. Mini fan; 31. Straight plate; 32. Power switch; 33. Slot; 34. Clamping block; 35. Heat dissipation pad; 36. Second heat dissipation hole; 37. Mounting base; 38. Silicone pad; 39. Processing tank. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] See also Figure 1-7The present invention provides a technical solution for quickly disconnecting a high-voltage vacuum circuit breaker:

[0031] Example 1:

[0032] like Figure 1-7 As shown, a fast-breaking high-voltage vacuum circuit breaker includes a circuit breaker body 1, a stainless steel frame 3 is fixedly installed at the bottom end of the circuit breaker body 1, a plurality of vacuum cylinders 2 are provided on one side of the top of the stainless steel frame 3, a bellows 4 is inserted and connected on one side of the top of the circuit breaker body 1, a circuit board 5 is fixedly installed on one side of the inner wall of the circuit breaker body 1, two partition plates 14 are provided inside the circuit breaker body 1, a second groove 15 is opened on one side of one partition plate 14, a first groove 6 is opened on one side of the inner wall of the circuit breaker body 1, auxiliary blocks 7 are slidably installed inside the first groove 6 and the second groove 15, auxiliary plates 8 are fixedly installed on one side of the two auxiliary blocks 7, the bottom ends of the two auxiliary plates 8 are inserted and connected with an auxiliary frame 12, the top of the auxiliary frame 12 is provided with a plurality of first heat dissipation holes 13, and both sides of the bottom ends of the two auxiliary plates 8 are inserted and connected 9. Four support columns 10 are fixedly installed at the bottom end of the circuit breaker body 1. The bottom ends of the four telescopic columns 9 are respectively connected to the top ends of the four support columns 10. The outsides of the four telescopic columns 9 are wrapped with springs 11. One end of the four springs 11 is respectively fixedly connected to the top ends of the four support columns 10. The positions of the two adjacent support columns 10 are corresponding. The two pushing plates 22 are relatively movable, and then the two clamping plates 21 are driven to move relative to each other. One side of the two clamping plates 21 will gradually approach the surface of the device. After the two are fitted, the four limit columns 20 are pressed inward in turn. The bottom ends of the four limit columns 20 will be embedded in the corresponding four limit grooves 23 for engagement, thereby limiting the two clamping plates 21 and ensuring the stability of the device after installation. After the device is placed on the top of the auxiliary frame 12, pressure will be applied to the auxiliary frame 12.

[0033] Example 2:

[0034] Based on the first embodiment, Figure 1 、 Figure 4 、 Figure 5 and Figure 6As shown, a slot 33 is provided inside the circuit breaker body 1, and two clamping blocks 34 are connected to each other on both sides of the slot 33. A plurality of second heat dissipation holes 36 are provided on the top of the heat dissipation pad 35. Two mounting seats 37 are connected to the inside of the circuit breaker body 1. A plurality of fixed columns 18 are fixedly installed inside one of the auxiliary plates 8. One end of each of the corresponding plurality of fixed columns 18 is movably sleeved with a movable block 17. The tops of the two movable blocks 17 are interspersed with a heat sink 16. Both sides of the top of the auxiliary frame 12 are fixed to the inner side of the auxiliary frame 12. The extension plates 19 are fixedly installed, and the push plates 22 are inserted on one side of the two extension plates 19. The clamping plates 21 are inserted on one side of the two push plates 22. The two sides of the top of the two extension plates 19 are inserted and connected with the limit columns 20. The front of the circuit breaker body 1 is fixedly installed with a motor seat 24, and the top of the motor seat 24 is fixedly installed with a motor 25. The bottom end of the inside of the circuit breaker body 1 is provided with a processing groove 39, and the inside of the processing groove 39 is rotatably connected with a bidirectional threaded rod 26. The bidirectional threaded rod 26 is fixed with a motor seat 24. One end is connected to the output shaft of the motor 25 for transmission, and a straight plate 31 is inserted into the bottom end of one of the auxiliary plates 8, and a power switch 32 is fixedly installed inside one of the dividing plates 14. One end of the bidirectional threaded rod 26 is threadedly sleeved with two auxiliary sleeves 27, and the tops of the two auxiliary sleeves 27 are inserted into the connecting column 28, and the tops of the two connecting columns 28 are inserted into the connecting frame 29. A plurality of miniature fans 30 are arranged inside the two connecting frames 29, and the plurality of miniature fans 30 are electrically connected to the external power supply through the power switch 32. The present invention moves the two heat sinks 16 to a position close to the device by setting a motor 25, a bidirectional threaded rod 26, a miniature fan 30, a heat dissipation pad 35, a silicone pad 38 and a power switch 32. The two movable blocks 17 will gradually move at one end of the plurality of fixed columns 18. Since the surfaces of the heat sink 16 and the heat dissipation pad 35 are coated with thermal grease, the heat emitted by the device is more effectively conducted to the heat sink 16, and then dissipated to the surrounding air through the heat sink 16.

[0035] Working principle: Place the device that needs to be opened on the top of the auxiliary frame 12, and then the device is located in the middle position of the two clamping plates 21. In order to increase the stability of the device, the two pushing plates 22 are relatively movable, and then the two clamping plates 21 are driven to move relative to each other. One side of the two clamping plates 21 will gradually approach the surface of the device. After the two are fitted, press the four limiting columns 20 inward in turn, and the bottom ends of the four limiting columns 20 will be embedded in the corresponding four limiting grooves 23 for engagement, thereby limiting the two clamping plates 21 and ensuring the stability of the device after installation. The distance between the two clamping plates 21 can be adjusted, so that devices of different specifications and diameters can be clamped and stored, which improves the use range of the circuit breaker. After the auxiliary frame 12 reaches the top, the weight borne by the auxiliary frame 12 will also increase, so that the height of the auxiliary frame 12 will slowly decrease, and the force will continue to be transmitted to the four telescopic columns 9. The four telescopic columns 9 will gradually telescope toward the top of the four support columns 10. Since one end of the spring 11 wound around the outside of the telescopic column 9 is fixed to the top of the support column 10, it can ensure that the telescopic column 9 moves downward by a certain distance and remains stable, avoiding the bottom surface of the device from directly contacting the surface of the circuit breaker body 1, so that the circuit breaker body 1 blocks the hole opened at the bottom of the device, resulting in low heat dissipation efficiency. The two auxiliary blocks 7 slide inside the circuit board 5 and the second groove 15 respectively. When the two auxiliary blocks 7 move downward, they will drive the two auxiliary plates 8 to move downward. The auxiliary frame 12 moves downward, and the auxiliary frame 12 can support a device of a certain weight and is relatively stable. The four telescopic columns 9 gradually telescope toward the inside of the four supporting columns 10, thereby effectively buffering the auxiliary frame 12 and avoiding excessive shaking of the device and causing wear. The two heat sinks 16 are moved to a position close to the device, and the two movable blocks 17 will gradually move at one end of the multiple fixed columns 18. Since the surfaces of the heat sink 16 and the heat dissipation pad 35 are coated with thermal grease, the heat generated by the device is more effectively conducted to the surface of the heat sink 16 and the heat dissipation pad 35, and then dissipated to the surrounding air through the heat sink 16 and the heat dissipation pad 35, thereby further processing the heat generated on the surface of the device and starting the motor 2. 5, which can drive the bidirectional threaded rod 26 to rotate, thereby driving the two auxiliary sleeves 27 to move. When the auxiliary plate 8 moves downward, it will drive the straight plate 31 to squeeze and touch the power switch 32, thereby driving the multiple micro-electric fans 30 electrically connected thereto to work. The wind blown by the micro-electric fans 30 will be transmitted to the bottom of the device through the multiple first heat dissipation holes 13, thereby dissipating the heat at the bottom of the device and improving the heat dissipation efficiency of the circuit breaker. Some devices can be placed on the surface of the heat dissipation pad 35 for installation. At this time, the bottom of the device will contact the four silicone pads 38. The surface of the silicone pad 38 made of silicone material is relatively soft, which can prevent the device from being damaged by excessive squeezing force on the surface of the heat dissipation pad 35. Then, specific welding equipment is used to weld the device together.

[0036] In the description of the present invention, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the present invention, unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be internal communication between two elements or an interaction relationship between two elements. Unless otherwise clearly specified and limited, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0038] 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.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A fast-breaking high-voltage vacuum circuit breaker, comprising a circuit breaker body (1), characterized in that: A stainless steel frame (3) is fixedly mounted on the bottom end of the circuit breaker body (1), a plurality of vacuum cylinders (2) are provided on one side of the top end of the stainless steel frame (3), a bellows (4) is inserted and connected on one side of the top end of the circuit breaker body (1), a circuit board (5) is fixedly mounted on one side of the inner wall of the circuit breaker body (1), two partition plates (14) are provided inside the circuit breaker body (1), a second groove (15) is provided on one side of one of the partition plates (14), a first groove (6) is provided on one side of the inner wall of the circuit breaker body (1), auxiliary blocks (7) are slidably mounted inside the first groove (6) and the second groove (15), auxiliary plates (8) are fixedly mounted on one side of the two auxiliary blocks (7), the bottom ends of the two auxiliary plates (8) are inserted and connected with an auxiliary frame (12), and a plurality of first heat dissipation holes (13) are provided on the top end of the auxiliary frame (12); Both sides of the bottom ends of the two auxiliary plates (8) are interpenetratingly connected with telescopic columns (9), and the bottom end of the inside of the circuit breaker body (1) is fixedly installed with four support columns (10), and the bottom ends of the four telescopic columns (9) are interpenetratingly connected with the top ends of the four support columns (10) respectively; The outsides of the four telescopic columns (9) are all wound with springs (11), one end of the four springs (11) is fixedly connected to the top ends of the four support columns (10), and the positions of two adjacent support columns (10) are corresponding to each other; A plurality of fixed columns (18) are fixedly installed inside one of the auxiliary plates (8), and one end of each of the corresponding plurality of fixed columns (18) is movably sleeved with a movable block (17), and the top ends of the two movable blocks (17) are interlaced with a heat sink (16); The circuit breaker body (1) is provided with a slot (33) inside, two clamping blocks (34) are snap-connected on both sides of the slot (33), the bottom ends of the four clamping blocks (34) are connected with heat dissipation pads (35) through-inserted, the top ends of the heat dissipation pads (35) are provided with a plurality of second heat dissipation holes (36), the circuit breaker body (1) is snap-connected with two mounting seats (37) inside, and silicone pads (38) are snap-connected on both sides of the top ends of the two mounting seats (37).

2. A fast-breaking high-voltage vacuum circuit breaker according to claim 1, characterized in that: Extension plates (19) are fixedly installed on both sides of the top of the auxiliary frame (12), and one side of the two extension plates (19) is connected to a pushing plate (22), and one side of the two pushing plates (22) is connected to a clamping plate (21), and both sides of the top of the two extension plates (19) are connected to a limiting column (20).

3. A fast-breaking high-voltage vacuum circuit breaker according to claim 2, characterized in that: The top ends of the two pushing plates (22) are each provided with a plurality of limiting grooves (23), the four limiting columns (20) are respectively engaged with the plurality of limiting grooves (23), and the positions of the two clamping plates (21) are corresponding.

4. A fast-breaking high-voltage vacuum circuit breaker according to claim 1, characterized in that: A motor seat (24) is fixedly mounted on the front of the circuit breaker body (1), a motor (25) is fixedly mounted on the top of the motor seat (24), a processing groove (39) is provided at the bottom end of the circuit breaker body (1), a bidirectional threaded rod (26) is rotatably connected inside the processing groove (39), one end of the bidirectional threaded rod (26) is transmission-connected to the output shaft of the motor (25), a straight plate (31) is inserted and connected at the bottom end of one of the auxiliary plates (8), and a power switch (32) is fixedly mounted inside one of the partition plates (14).

5. A fast-breaking high-voltage vacuum circuit breaker according to claim 4, characterized in that: One end of the bidirectional threaded rod (26) is threadedly sleeved with two auxiliary sleeves (27), the tops of the two auxiliary sleeves (27) are both inserted and connected with connecting columns (28), the tops of the two connecting columns (28) are both inserted and connected with connecting frames (29), and the interiors of the two connecting frames (29) are both provided with a plurality of micro fans (30), and the plurality of micro fans (30) are electrically connected to an external power supply through a power switch (32).

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