A quick-release vacuum circuit breaker

Abstract

The utility model relates to middle and high voltage electric power equipment field discloses a quick detach type vacuum circuit breaker, including the bottom plate, the top of bottom plate all is connected with a plurality of hollow cylinders fixedly, a plurality of hollow cylinders's inside fixedly connected with motor, motor's drive end fixedly connected with gear no.

Description

Technical Field

[0001] This utility model relates to the field of medium and high voltage power equipment, and in particular to a quick-release vacuum circuit breaker. Background Technology

[0002] Quick-release vacuum circuit breakers are widely used in indoor substations, switching stations, and distribution rooms with voltage levels ranging from 10 to 40.5 kV, serving as crucial components for controlling and protecting electrical equipment in power systems. They can be used to control and protect medium- and high-voltage power equipment such as transformers, motors, and capacitor banks, as well as to perform opening and closing operations and fault protection on distribution lines, ensuring the safe, stable, and reliable operation of the power system. Based on traditional vacuum circuit breakers, they feature structural improvements that enable quick disassembly and installation. Typically, the circuit breaker's body structure design employs easily disassembled connection methods, such as modular design. Various components are assembled using special clips, bolts, or quick-connectors, allowing the circuit breaker to be quickly disassembled into individual modules for maintenance or component replacement without the need for complex tools or cumbersome disassembly procedures.

[0003] In different distribution rooms or distribution boxes, the installation space varies. The adjustable-size fixed vacuum tube design can be adjusted according to the size and shape of the actual installation space, ensuring that the vacuum circuit breaker can be installed reasonably in a limited space, improving space utilization. The adjustable-size fixing device can accommodate vacuum tubes of various sizes. When replacing vacuum tubes, there is no need to worry about installation difficulties caused by differences in vacuum tube specifications. This improves the equipment's compatibility with different types of vacuum tubes, reduces inventory costs and the complexity of equipment replacement. Through the adjustable-size fixing device, it is possible to make precise adjustments according to the actual size of the vacuum tube, so that the vacuum tube can be firmly fixed inside the circuit breaker, avoiding the impact on the performance of the circuit breaker due to loosening or shaking.

[0004] For different installation spaces, it is difficult to adjust according to the actual size and shape of the space. This can lead to vacuum circuit breakers occupying too much space during installation, or being unable to be installed reasonably due to space limitations, reducing space utilization. It is also difficult to make precise adjustments according to the actual size of the vacuum tube, resulting in the vacuum tube not being securely fixed inside the circuit breaker. During the operation of the circuit breaker, the vacuum tube is prone to additional stress due to loosening or shaking, affecting its performance and even causing damage to the vacuum tube, reducing the reliability of the equipment. It is also difficult to reasonably adjust the position and force of the fixing point according to the weight and shape of the vacuum tube, resulting in uneven stress on the vacuum tube during operation. Excessive local stress will accelerate the wear of the vacuum tube, shorten its service life, and also increase the risk of failures such as vacuum tube rupture. To solve the above problems, a quick-release vacuum circuit breaker is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a quick-release vacuum circuit breaker, which aims to improve the problems of inconvenient space utilization, poor adaptability, and inconvenient replacement in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A quick-release vacuum circuit breaker includes a base plate. Multiple hollow cylinders are fixedly connected to the top of each base plate. A motor is fixedly connected inside each hollow cylinder. A gear is fixedly connected to the drive end of each motor. Multiple gears are rotatably connected inside each hollow cylinder. An internal gear is rotatably connected inside each hollow cylinder. A rack is slidably connected inside each hollow cylinder. A fixing block is fixedly connected to one side of each rack. Multiple hollow cuboids are fixedly connected to the outer side of each hollow cylinder. A vacuum tube is slidably connected to the inner wall of each hollow cylinder. A detachable component is connected to the outer side of the vacuum tube. As a further description of the above technical solution: The detachable component includes a current transformer, the front end of which contacts the rear end of a vacuum tube. Two square boxes are fixedly connected to the outside of the current transformer. A fixing plate is fixedly connected inside each of the two square boxes. A cylinder is fixedly connected inside the fixing plate. A fixing block is fixedly connected to the driving end of the cylinder. A slider is fixedly connected to the bottom end of the fixing block. Connecting rods are rotatably connected to both sides of the slider. A limit plate is fixedly connected inside the square box. A fixing rod is rotatably connected to the bottom end of each of the two connecting rods. As a further description of the above technical solution: Two fixed posts are fixedly connected to the outer side of each vacuum tube, and the outer side of the rack is slidably connected to the inner wall of the hollow cuboid. As a further description of the above technical solution: The outer teeth of gear one are meshed with the outer teeth of the internal gear, the outer teeth of gear two are meshed with the outer teeth of the rack, and the outer teeth of gear two are meshed with the outer teeth of the internal gear. As a further description of the above technical solution: The bottom end of the cylinder is fixedly connected to the inner wall of the square box, and the bottom end of the slider is slidably connected to the inside of the square box. As a further description of the above technical solution: The outer sides of the two fixing rods are slidably connected to the inside of the square box, and the inner sides of the two fixing rods are slidably connected to the outer sides of the limiting plate; As a further description of the above technical solution: The inner walls of the two fixing rods are in contact with the outer side of the fixing column, and the rear side of the fixing plate is fixedly connected to the inner wall of the square box; As a further description of the above technical solution: The inner walls of the two fixing rods are in contact with the outer side of the fixing column, and the rear side of the fixing plate is fixedly connected to the inner wall of the square box.

[0007] This utility model has the following beneficial effects: 1. In this utility model, the adjustable size is achieved through the operation of the motor and the cooperation of the gear and rack. During maintenance and repair, the adjustable fixing device can be quickly loosened and tightened, making it convenient for maintenance personnel to remove and replace the vacuum tube. Compared with the traditional fixing method, it does not require disassembling a large number of parts or using complicated tools, which greatly shortens the maintenance time and improves the maintenance efficiency. By adjusting the size of the fixing device, the appearance and connection parts of the vacuum tube can be observed more clearly, which helps to detect potential faults in time.

[0008] 2. In this utility model, the detachable design is achieved through the operation of the cylinder and the cooperation of the connecting rod and the slider. When the current transformer malfunctions, the detachable design allows maintenance personnel to directly remove it from the circuit breaker, eliminating the need to remove a large number of other circuit breaker components for repair or replacement, as is required with traditional built-in current transformers. This significantly shortens maintenance time, improves the operating efficiency of the power system, and reduces losses caused by power outages. In daily maintenance, the detachable current transformer facilitates regular inspection, cleaning, and testing by maintenance personnel, enabling them to promptly identify potential problems such as insulation aging and winding damage, thereby taking preventative measures to avoid faults and extend the service life of the equipment. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a quick-release vacuum circuit breaker proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the base plate of a quick-release vacuum circuit breaker proposed in this utility model; Figure 3 This is a schematic diagram of the hollow cylinder structure of a quick-release vacuum circuit breaker proposed in this utility model; Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0010] Legend: 1. Base plate; 2. Hollow cylinder; 3. Motor; 4. Gear 1; 5. Gear 2; 6. Internal gear; 7. Rack; 8. Fixing block 1; 9. Hollow cuboid; 10. Square box; 11. Fixing plate; 12. Cylinder; 13. Fixing block 2; 14. Slider; 15. Connecting rod; 16. Limiting plate; 17. Fixing rod; 18. Fixing column; 19. Current transformer; 20. Vacuum tube. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Reference Figures 1 to 3 One embodiment of this utility model is a quick-release vacuum circuit breaker. Quick-release vacuum circuit breakers are widely used in indoor substations, switching stations, distribution rooms and other places with voltage levels of 10-40.5kV, as an important component for controlling and protecting electrical equipment in power systems. It can be used to control and protect medium and high voltage power equipment such as transformers, motors, and capacitor banks, as well as to realize the opening and closing operation and fault protection of power distribution lines, ensuring the safe, stable and reliable operation of the power system. It includes a base plate 1, which provides installation space and stability for subsequent components. Multiple hollow cylinders 2 are fixedly connected to the top of the base plate 1. The base plate 1 provides stability and installation space for the multiple hollow cylinders 2. Motors 3 are fixedly connected inside the multiple hollow cylinders 2. Motors 3 are the driving end. The hollow cylinders 2 provide stability for motors 3 and prevent shaking when motors 3 are operating. Gear 4 is fixedly connected to the driving end of motors 3. When motors 3 are operating, they drive gear 4 to rotate. Multiple gears 5 are rotatably connected inside the hollow cylinders 2. The hollow cylinders 2 provide stability for gears 5, making gears 5 more stable under the drive of gear 4.

[0013] The hollow cylinder 2 has an internal gear 6 rotatably connected inside, providing stability for the internal gear 6 so that it can rotate stably under the drive of gear 4. The hollow cylinder 2 also has racks 7 slidably connected inside, providing stability for the racks 7 when they move under the drive of gear 5. Multiple racks 7 are fixedly connected to adjacent sides with fixing blocks 8, which move when the racks 7 move. Multiple hollow cuboids 9 are fixedly connected to the outer side of the hollow cylinder 2, providing installation space for the hollow cuboids 9 and providing stability for the racks 7 when they move, preventing them from wobbling. A vacuum tube 20 is slidably connected to the inner wall of the hollow cylinder 2, providing stability for the vacuum tube 20. A detachable component is connected to the outer side of the vacuum tube 20, facilitating the replacement and maintenance of the current transformer 19. Reference Figures 2 to 4 The detachable component includes a current transformer 19, the front end of which is in contact with the rear end of the vacuum tube 20. The front end of the current transformer 19 is in close contact with the rear end of the vacuum tube 20, providing important data support for the monitoring and control of the power system. Two square boxes 10 are fixedly connected to the outside of the current transformer 19. The current transformer 19 provides stability and space for subsequent component installation in the square boxes 10. Fixing plates 11 are fixedly connected inside the two square boxes 10, providing installation space for the fixing plates 11.

[0014] A cylinder 12 is fixedly connected inside the fixed plate 11. The cylinder 12 is the driving source. The fixed plate 11 provides stability for the cylinder 12 during operation and prevents shaking. A second fixed block 13 is fixedly connected to the driving end of the cylinder 12. When the cylinder 12 operates, it drives the second fixed block 13 to move. A slider 14 is fixedly connected to the bottom end of the second fixed block 13. When the second fixed block 13 moves, it drives the slider 14 to move. Connecting rods 15 are rotatably connected to both sides of the top of the slider 14. When the slider 14 moves, it drives the connecting rods 15 to move. A limit plate 16 is fixedly connected inside the square box 10. The square box 10 provides installation space for the limit plate 16 and makes the slider 14 more stable when it moves. Fixed rods 17 are rotatably connected to the bottom ends of the two connecting rods 15. The connecting rods 15 drive the fixed rods 17 to move under the drive of the slider 14. Reference Figures 2 to 4Two fixed posts 18 are fixedly connected to the outer side of the vacuum tube 20. The vacuum tube 20 provides stability to the fixed posts 18. The outer side of the rack 7 is slidably connected to the inner wall of the hollow cuboid 9. The hollow cuboid 9 provides stability to the rack 7 during operation, preventing it from shaking and deviating. The outer teeth of gear 1 4 are meshed with the outer teeth of the inner gear 6. The motor 3 transmits power to the inner gear 6 through gear 1 4 to rotate. The outer teeth of gear 2 5 are meshed with the outer teeth of the rack 7. Gear 2 5 transmits power from the inner gear 6 to the rack 7 to move. The outer teeth of gear 2 5 are meshed with the outer teeth of the inner gear 6. The inner gear 6 transmits power from gear 1 4 to gear 2 5.

[0015] The bottom end of cylinder 12 is fixedly connected to the inner wall of square box 10. Square box 10 provides stability for cylinder 12 during operation. The bottom end of slider 14 is slidably connected to the inside of square box 10. Square box 10 provides stability and limit effect for slider 14 during operation, preventing slider 14 from shaking and deviating. The outer sides of two fixing rods 17 are slidably connected to the inside of square box 10. Square box 10 provides stability and guidance for fixing rods 17. The inside of two fixing rods 17 is slidably connected to the outside of limit plate 16. Limit plate 16 provides limit and stability when fixing rods 17 move, preventing shaking and deviating. The inner walls of two fixing rods 17 are in contact with the outer side of fixing post 18. Under the operation of the assembly, the inner walls of fixing rods 17 are in contact with the outer side of fixing post 18 to achieve a fixing effect.

[0016] The rear side of the fixing plate 11 is fixedly connected to the inner wall of the square box 10. The square box 10 provides installation space and stability for the fixing plate 11. The adjacent sides of multiple fixing blocks 8 are in contact with the outer side of the vacuum tube 20. The fixing blocks 8 fix the vacuum tube 20 under the operation of the assembly. The bottom end of the vacuum tube 20 is in contact with the top end of the base plate 1. When the vacuum tube 20 is placed in the hollow cylinder 2, the bottom end is in contact with the base plate 1, so that the vacuum tube 20 can be placed stably on the top end of the base plate 1.

[0017] Working principle: After the device is started, the motor 3 inside the multiple hollow cylinders 2 fixed at the top of the base plate 1 is energized and operates, converting electrical energy into mechanical energy. The gear 4 connected to the drive end of the motor 3 starts to rotate. The gear 4 meshes with multiple gears 5. Due to the transmission relationship between the large and small gears, the gears 5 rotate within the hollow cylinders 2, realizing the change of speed and torque. The gears 5 also mesh with the internal gear 6, causing the internal gear 6 to rotate. The rotation of the internal gear 6 interacts with the rack 7 sliding within the hollow cylinders 2. According to the transmission principle, the circular motion of the internal gear 6 is converted into the linear motion of the rack 7, pushing the rack 7 to slide within the hollow cylinders 2. The fixing block 8 fixed on the side of the multiple racks 7 moves with the rack 7 and can be used to perform the adjustment operation.

[0018] When it is necessary to adjust or maintain the connection between the current transformer 19 and the vacuum tube 20, the cylinder 12 can be operated. The cylinder 12 acts as a drive source, driving the fixed block 13, which is fixedly connected to it, to move linearly. This, in turn, causes the slider 14 at the bottom of the fixed block 13 to slide along a specific track within the square box 10. The connecting rods 15, which are rotatably connected to both sides of the slider 14, change their angles due to the movement of the slider 14. The limiting plate 16 fixed inside the square box 10 restricts the range of motion of the connecting rod 15 and the fixed rod 17. The inner wall of the fixed rod 17 provides a mechanism to clamp the fixed post 18 under the operation of the assembly, achieving a fixing effect. The current transformer 19 is based on electromagnetic... Based on the sensing principle, its front end contacts the rear end of the vacuum tube 20, which can detect the current inside the vacuum tube 20. By adjusting its position through detachable components, more accurate current parameter monitoring and equipment maintenance functions can be achieved.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-release vacuum circuit breaker, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to multiple hollow cylinders (2). The interior of the multiple hollow cylinders (2) is fixedly connected to a motor (3). The drive end of the motor (3) is fixedly connected to a gear (4). The interior of the hollow cylinders (2) is rotatably connected to multiple gears (5). The interior of the hollow cylinders (2) is rotatably connected to an internal gear (6). The interior of the hollow cylinders (2) is slidably connected to a rack (7). The sides of the multiple racks (7) are fixedly connected to a fixing block (8). The outer side of the hollow cylinders (2) is fixedly connected to multiple hollow cuboids (9). The inner wall of the hollow cylinders (2) is slidably connected to a vacuum tube (20). The outer side of the vacuum tube (20) is connected to a detachable component.

2. The quick-release vacuum circuit breaker according to claim 1, characterized in that: The detachable component includes a current transformer (19), the front end of which is in contact with the rear end of a vacuum tube (20). Two square boxes (10) are fixedly connected to the outside of the current transformer (19). A fixing plate (11) is fixedly connected inside the two square boxes (10). A cylinder (12) is fixedly connected inside the fixing plate (11). A fixing block (13) is fixedly connected to the driving end of the cylinder (12). A slider (14) is fixedly connected to the bottom end of the fixing block (13). A connecting rod (15) is rotatably connected to both sides of the top end of the slider (14). A limit plate (16) is fixedly connected inside the square box (10). A fixing rod (17) is rotatably connected to the bottom end of the two connecting rods (15).

3. A quick-release vacuum circuit breaker according to claim 1, characterized in that: Two fixed posts (18) are fixedly connected to the outer side of the vacuum tube (20), and the outer side of the rack (7) is slidably connected to the inner wall of the hollow cuboid (9).

4. A quick-release vacuum circuit breaker according to claim 1, characterized in that: The outer teeth of gear one (4) are meshed with the outer teeth of the inner gear (6), the outer teeth of gear two (5) are meshed with the outer teeth of the rack (7), and the outer teeth of gear two (5) are meshed with the outer teeth of the inner gear (6).

5. A quick-release vacuum circuit breaker according to claim 2, characterized in that: The bottom end of the cylinder (12) is fixedly connected to the inner wall of the square box (10), and the bottom end of the slider (14) is slidably connected to the inside of the square box (10).

6. A quick-release vacuum circuit breaker according to claim 2, characterized in that: The outer sides of the two fixing rods (17) are slidably connected to the inside of the square box (10), and the inner sides of the two fixing rods (17) are slidably connected to the outside of the limiting plate (16).

7. A quick-release vacuum circuit breaker according to claim 2, characterized in that: The inner walls of the two fixing rods (17) are in contact with the outer side of the fixing column (18), and the rear side of the fixing plate (11) is fixedly connected to the inner wall of the square box (10).

8. A quick-release vacuum circuit breaker according to claim 1, characterized in that: One of the multiple fixing blocks (8) is in contact with the outer side of the vacuum tube (20), and the bottom end of the vacuum tube (20) is in contact with the top end of the base plate (1).

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