Opening tripping assembly of spring operating mechanism for high-voltage circuit breaker

Abstract

The utility model relates to an opening tripping assembly of a spring operating mechanism for a high-voltage circuit breaker, which is arranged on an aluminum support of the spring operating mechanism and comprises an opening electromagnet, an opening primary buckling connecting lever, an opening secondary buckling latch and an opening latch, in a switching-on state, the switching-off first-stage buckling connecting lever is located on a path in which the buckling plate moves to a switching-off state, one end of the switching-off second-stage buckling latch is located on a path in which the switching-off first-stage buckling connecting lever avoids the buckling plate, and one end of the switching-off latch is located on a path in which the switching-off second-stage buckling latch avoids the switching-off first-stage buckling connecting lever; compared with a traditional mechanism, the mechanism provided by the utility model has the advantages that the fastening and releasing forces are greatly reduced, the power of the release is correspondingly reduced, and the overall fastening and releasing stability is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a switch-off tripping assembly of a spring operating mechanism for a high-voltage circuit breaker. Background Art

[0002] With the development of high voltage transmission technology, it is of great significance to realize long-distance and large-capacity transmission, optimize resource allocation and reduce environmental impact. Spring operating mechanism is widely used in high voltage circuit breakers due to its simple structure, small size, long life, no pollution to the environment, good resistance to weather conditions and high reliability.

[0003] The spring operating mechanism currently used in large quantities in the market generally uses a power device to drive the gear to rotate and compress the closing spring assembly to store energy. When closing the circuit breaker, the large cam on the energy storage spline shaft rotates and hits the intermediate conversion arm on the output spline shaft to achieve closing, and the opening spring assembly is compressed after closing the circuit breaker.

[0004] After closing the circuit breaker, the middle conversion arm needs to be limited by the opening trip assembly to keep it in the closed state. When opening the circuit breaker is required, the opening trip assembly is triggered, and it rotates under the elastic force of the opening spring assembly and drives the output spline shaft to rotate to perform the opening operation. Therefore, the stability and sensitivity of the opening trip assembly are very important. It is required to maintain the opening state and be accurately triggered when opening is required. Utility Model Content

[0005] The utility model aims at the deficiencies of the prior art and provides a switch-off tripping assembly of a spring operating mechanism for a high-voltage circuit breaker.

[0006] The utility model is realized through the following technical scheme, and provides a tripping release assembly of a spring operating mechanism for a high-voltage circuit breaker, which is installed on an aluminum support of the spring operating mechanism, and comprises a tripping electromagnet and a first-level tripping buckle arm, a second-level tripping buckle catch and a tripping catch, all of which are hinged on the aluminum support. A buckle plate is arranged on the intermediate conversion buckle arm. When in a closed state, the first-level tripping buckle arm is located on a path where the buckle plate moves to an opening state, one end of the second-level tripping buckle catch is located on a path where the first-level tripping buckle arm avoids the buckle plate, one end of the tripping catch is located on a path where the second-level tripping buckle catch avoids the first-level tripping buckle arm, and the tripping electromagnet drives the other end of the tripping catch to swing.

[0007] As an optimization, one end of the buckle plate away from the first-level buckle crank arm of the gate opening is hinged to the intermediate conversion crank arm, a positioning hole is formed on the buckle plate, a buckle plate positioning pin inserted into the positioning hole is fixedly connected to the intermediate conversion crank arm, and the diameter of the buckle plate positioning pin is smaller than the diameter of the positioning hole. In this solution, the diameter of the buckle plate positioning pin is smaller than the diameter of the positioning hole, so that the buckle plate can swing to a certain extent, thereby facilitating the direct buckling and separation of the buckle plate and the first-level buckle crank arm of the gate opening.

[0008] As an optimization, one end of the first-level snap-connecting arm of the gate-opening is hinged to the aluminum support, and the other end swings up and down. The second-level snap-connecting catch of the gate-opening is L-shaped, and the upper end of the vertical section of the second-level snap-connecting catch of the gate-opening is adapted to the first-level snap-connecting arm of the gate-opening, and the end of the horizontal section of the second-level snap-connecting catch of the gate-opening is adapted to the gate-opening catch.

[0009] As an optimization, the opening brake latch is arranged vertically and the middle part is hinged to the aluminum support, the lower end of the opening brake latch is adapted to the opening brake secondary buckle latch, and the opening brake electromagnet drives the upper end of the opening brake latch to swing.

[0010] As an optimization, the first-level buckle-joint crank arm of the opening gate is provided with a first roller adapted to the buckle-joint plate. The first roller provided in this solution facilitates the separation between the first-level buckle-joint crank arm of the opening gate and the buckle-joint plate.

[0011] As an optimization, the first-stage buckle arm of the opening gate is provided with a second roller adapted to the second-stage buckle catch of the opening gate. The second roller provided in this solution facilitates the separation between the first-stage buckle arm of the opening gate and the second-stage buckle catch of the opening gate.

[0012] As an optimization, the second-stage latch of the opening gate is provided with a third roller adapted to the opening gate latch. The third roller provided in this solution facilitates the separation between the second-stage latch of the opening gate and the opening gate latch.

[0013] The beneficial effects of the utility model are as follows: the utility model is a switch-off release component of a spring operating mechanism for a high-voltage circuit breaker. Compared with the traditional mechanism, the buckling and tripping forces of the utility model are greatly reduced, the power of the release is correspondingly reduced, and the overall buckling and tripping stability is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the use state of the utility model;

[0015] Figure 2 This is a schematic diagram of the closing state of the utility model;

[0016] Figure 3 This is a schematic diagram of the utility model in the open state;

[0017] As shown in the figure:

[0018] 1. Aluminum support, 5. Energy storage spline shaft, 9. Large cam, 10. Intermediate conversion arm, 10-1. Roller, 10-2. Snap-on plate, 10-3. Snap-on plate locating pin, 11-1. First-level snap-on arm for opening the gate, 11-2. Second-level snap-on detent for opening the gate, 11-3. Opening detent, 11-4. Opening electromagnet, 12. Opening spring assembly, 13. Output spline shaft. DETAILED DESCRIPTION

[0019] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0020] like Figures 1 to 3 As shown, a tripping assembly of a spring operating mechanism for a high-voltage circuit breaker of the utility model is installed on an aluminum support 1 of the spring operating mechanism, and includes a tripping electromagnet 11-4 and a first-level tripping buckle arm 11-1, a second-level tripping buckle 11-2 and a tripping buckle 11-3, all of which are hinged on the aluminum support 1. The tripping electromagnet 11-4 is a telescopic electromagnet.

[0021] A buckle plate 10-2 is mounted on the intermediate conversion crank arm 10. The end of the buckle plate 10-2 away from the first-stage buckle crank arm 11-1 of the opening gate is hinged to the intermediate conversion crank arm 10, and the hinge axis is parallel to the output spline shaft 13. A positioning hole is opened on the buckle plate 10-2. A buckle plate positioning pin 10-3 inserted into the positioning hole is fixedly connected to the intermediate conversion crank arm 10. The diameter of the buckle plate positioning pin 10-3 is smaller than the diameter of the positioning hole. Therefore, the buckle plate can swing to a certain extent, so as to facilitate the direct buckling and separation of the buckle plate and the first-stage buckle crank arm of the opening gate.

[0022] When in the closed state, the first-level opening latch arm 11-1 is located on the path where the latch plate 10-2 moves to the opening state, one end of the second-level opening latch 11-2 is located on the path where the first-level opening latch arm 11-1 avoids the latch plate 10-2, one end of the opening latch 11-3 is located on the path where the second-level opening latch 11-2 avoids the first-level opening latch arm 11-1, and the opening electromagnet 11-4 drives the other end of the opening latch 11-3 to swing.

[0023] Specifically, one end of the first-level buckle arm 11-1 of the opening gate is hinged to the aluminum support 1 and the hinge axis is parallel to the output spline shaft 13, and the other end swings up and down. The first-level buckle arm 11-1 of the opening gate is equipped with a first roller adapted to the buckle plate 10-2, and the first roller is installed at the end of the swing end of the first-level buckle arm 11-1 of the opening gate. The first roller is pressed against the buckle plate 10-2 to limit the return of the intermediate conversion arm 10. When the first-level buckle arm 11-1 of the opening gate is in a free state, the buckle plate 10-2 can push the first-level buckle arm 11-1 of the opening gate to make it swing downward. The first-level buckle arm 11-1 of the opening gate is also equipped with a torsion spring that drives it to swing upward, so that it swings to the path of the buckle plate 10-2 under the action of the torsion spring.

[0024] The second-stage latch 11-2 of the opening gate is L-shaped, and the upper end of the vertical section of the second-stage latch 11-2 is adapted to the first-stage latch arm 11-1 of the opening gate. Specifically, the first-stage latch arm 11-1 of the opening gate is equipped with a second roller adapted to the second-stage latch 11-2 of the opening gate. An arc groove is opened at the upper end of the vertical section of the second-stage latch 11-2 of the opening gate, and the second roller is located in the arc groove. When the second-stage latch 11-2 of the opening gate is in a free state, the first-stage latch arm 11-1 of the opening gate can swing downward to push the second-stage latch 11-2 of the opening gate open through the second roller. The second-stage latch 11-2 of the opening gate is also equipped with a torsion spring so that the upper end of the vertical section of the second-stage latch 11-2 of the opening gate can be driven to push against the second roller.

[0025] The end of the horizontal section of the secondary snap-on catch 11-2 of the opening gate is matched with the opening gate catch 11-3. The secondary snap-on catch 11-2 of the opening gate is equipped with a third roller matched with the opening gate catch 11-3. The opening gate catch 11-3 is vertically arranged and the middle part is hinged with the aluminum support 1. The lower end of the opening gate catch 11-3 is matched with the secondary snap-on catch 11-2 of the opening gate. Specifically, the lower end of the opening gate catch 11-3 is pressed against the third roller.

[0026] The opening electromagnet 11 - 4 drives the upper end of the opening latch 11 - 3 to swing, thereby driving the lower end of the opening latch 11 - 3 to swing in the opposite direction to avoid the third roller.

[0027] The use of the utility model:

[0028] When closing the circuit breaker, the energy storage spline shaft 5 drives the large cam 9 to rotate, and the large cam 9 hits the roller 10-1 of the intermediate conversion arm 10 to drive the output spline shaft 13 to rotate to complete the closing action. At the same time, the opening spring arm 13-2 on the output spline shaft 13 compresses the opening spring assembly 12.

[0029] At this time, if Figure 2As shown, the snap-on plate 10-2 of the intermediate conversion crank arm 10 presses against the end of the first-stage snap-on crank arm 11-1 to limit its return, and one end of the second-stage snap-on catch 11-2 of the opening gate is located on the path of the first-stage snap-on crank arm 11-1 of the opening gate to avoid the snap-on plate 10-2. In this embodiment, the second-stage snap-on catch 11-2 of the opening gate presses against the lower end of the first-stage snap-on crank arm 11-1 of the opening gate to prevent it from moving downward, and the second-stage snap-on catch 11-2 of the opening gate is L-shaped, and the lower end of the opening catch 11-3 of the opening gate presses against the other end of the second-stage snap-on catch 11-2 of the opening gate to prevent it from swinging upward. After the closing action, the large cam 9 is separated from the roller 10-1, and the closing state is maintained by the opening gate release assembly.

[0030] When opening the gate, the opening electromagnet 11-4 pushes the opening latch 11-3 to rotate to the clear position, and the second-stage opening latch and the first-stage opening arm rotate to the clear position in sequence under the action of the latching relay force, and the opening spring assembly 12 pushes the output spline shaft 13 to rotate to complete the opening action.

[0031] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A tripping assembly for a spring operating mechanism of a high voltage circuit breaker, mounted on an aluminum support (1) of the spring operating mechanism, characterized in that: The invention comprises a gate-opening electromagnet (11-4), a gate-opening first-stage buckling crank arm (11-1), a gate-opening second-stage buckling catch (11-2), and a gate-opening catch (11-3) which are all hinged on an aluminum support (1); a buckling plate (10-2) is mounted on the intermediate conversion crank arm (10); in a closed state, the gate-opening first-stage buckling crank arm (11-1) is located on a path where the buckling plate (10-2) moves toward a gate-opening state; one end of the gate-opening second-stage buckling catch (11-2) is located on a path where the gate-opening first-stage buckling crank arm (11-1) avoids the buckling plate (10-2); one end of the gate-opening catch (11-3) is located on a path where the gate-opening second-stage buckling catch (11-2) avoids the gate-opening first-stage buckling crank arm (11-1); and the gate-opening electromagnet (11-4) drives the gate-opening catch (11-3) to swing at the other end.

2. The opening trip assembly of a spring operating mechanism for a high-voltage circuit breaker according to claim 1, characterized in that: One end of the buckle plate (10-2) away from the gate-opening first-stage buckle arm (11-1) is hinged to the intermediate conversion arm (10); a positioning hole is formed on the buckle plate (10-2); a buckle plate positioning pin (10-3) inserted into the positioning hole is fixedly connected to the intermediate conversion arm (10); and the diameter of the buckle plate positioning pin (10-3) is smaller than the diameter of the positioning hole.

3. The opening trip assembly of a spring operating mechanism for a high-voltage circuit breaker according to claim 1, characterized in that: One end of the first-stage split gate buckle arm (11-1) is hinged to the aluminum support (1), and the other end swings up and down; the second-stage split gate buckle catch (11-2) is L-shaped; the upper end of the vertical section of the second-stage split gate buckle catch (11-2) is adapted to the first-stage split gate buckle arm (11-1), and the end of the horizontal section of the second-stage split gate buckle catch (11-2) is adapted to the split gate buckle (11-3).

4. The opening trip assembly of a spring operating mechanism for a high-voltage circuit breaker according to claim 1, characterized in that: The opening brake catch (11-3) is arranged vertically and its middle part is hinged to the aluminum support (1); the lower end of the opening brake catch (11-3) is adapted to the opening brake secondary buckle catch (11-2); and the opening brake electromagnet (11-4) drives the upper end of the opening brake catch (11-3) to swing.

5. The opening trip assembly of a spring operating mechanism for a high-voltage circuit breaker according to claim 1, characterized in that: The first-level buckling crank arm (11-1) of the gate opening is provided with a first roller adapted to the buckling plate (10-2).

6. The opening trip assembly of a spring operating mechanism for a high-voltage circuit breaker according to claim 1, characterized in that: The first-stage latching crank arm (11-1) of the opening gate is provided with a second roller adapted to the second-stage latching catch (11-2) of the opening gate.

7. The opening trip assembly of a spring operating mechanism for a high-voltage circuit breaker according to claim 1, characterized in that: The gate-opening secondary buckle catch (11-2) is provided with a third roller adapted to the gate-opening catch (11-3).

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