Centering device for circuit breaker conductor

Abstract

The utility model belongs to the technical field of circuit breaker assembly, and discloses a centering device for a circuit breaker conductor, which comprises a main board and positioning pieces, the main board is detachably arranged on a cylinder and positioned at a pulling opening of the cylinder, the positioning pieces are arranged on the main board, and the arrangement positions of the positioning pieces are in one-to-one correspondence with the arrangement positions of a central conductor. And the positioning piece is provided with a positioning hole for the second end of the conductor to insert. The first end of the conductor is preliminarily installed on an arc extinguish chamber structure through the fastener, the centering device used for the circuit breaker conductor is detachably installed on the cylinder, the positioning piece is provided with a positioning hole to simulate a center conductor, the second end of the conductor is aligned with the positioning hole of the positioning piece, the second end of the conductor is inserted into the positioning hole, and the centering device is installed on the cylinder. At the moment, the first end of the conductor is completely fixed on the arc extinguish chamber structure, the centering device for the circuit breaker conductor is taken down from the cylinder body, then the basin-type insulator is installed, the conductor and the center conductor of the basin-type insulator are centered smoothly, the assembling operation difficulty is effectively reduced, and the assembling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker assembly technology, and in particular to a centering device for circuit breaker conductors. Background Technology

[0002] Gas-insulated switchgear (GIS) mainly consists of circuit breakers, disconnectors, grounding switches, and instrument transformers. It has advantages such as small footprint, high reliability, and long service life.

[0003] As a core component of GIS equipment, the circuit breaker includes a cylinder, an arc-extinguishing chamber structure housed within the cylinder, and a conductor. During assembly, fasteners are used to initially install the first end of the conductor onto the arc-extinguishing chamber structure, and the second end of the conductor extends to the pull-out end of the cylinder. A pot-type insulator is then installed at the pull-out end. The position of the second end of the conductor is adjusted so that it can be aligned with the center conductor of the pot-type insulator. Finally, the first end of the conductor is completely fixed to the arc-extinguishing chamber structure. Due to the large size and weight of the pot-type insulator, it affects observation during assembly, making the alignment of the conductor and the center conductor of the pot-type insulator difficult and resulting in low assembly efficiency.

[0004] In other words, the existing circuit breaker conductor installation has the disadvantages of large size and weight of the basin insulator, which affects the observation during assembly, and makes it difficult to center the conductor and the center conductor of the basin insulator, resulting in low assembly efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a centering device for circuit breaker conductors, so that before installing the basin insulator, the centering device for circuit breaker conductors is first installed on the cylinder to simulate the basin insulator, which can easily and quickly determine the conductor position, ensure that the conductor and the center conductor of the basin insulator are successfully aligned, thereby reducing the difficulty of assembly operation and improving assembly efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a centering device for circuit breaker conductors. The circuit breaker includes a cylinder, an arc-extinguishing chamber structure, a conductor, and a basin-type insulator. Both the arc-extinguishing chamber structure and the conductor are disposed within the cylinder. A first end of the conductor is fastened to the arc-extinguishing chamber structure using fasteners, and a second end of the conductor extends to the extension opening of the cylinder for alignment with the center conductor of the basin-type insulator before assembly. The centering device for circuit breaker conductors includes:

[0008] A motherboard, which is detachably mounted on the cylinder and located at the pull-out port;

[0009] A positioning component is disposed on the main board, and the position of the positioning component corresponds one-to-one with the position of the center conductor. The positioning component is provided with a positioning hole for the second end of the conductor to be inserted.

[0010] As an optional technical solution for a centering device for circuit breaker conductors, the positioning element is detachably connected to the main board.

[0011] As an optional technical solution for a centering device for circuit breaker conductors, the main board is provided with mounting through holes, the positions of which correspond one-to-one with the positions of the center conductors, and the positioning element is at least partially disposed within the mounting through holes.

[0012] As an optional technical solution for a centering device for circuit breaker conductors, the positioning member is provided with external threads, the mounting through hole is a threaded hole, and the positioning member is threadedly engaged with the mounting through hole.

[0013] As an optional technical solution for a centering device for circuit breaker conductors, the positioning member is provided with a limiting ring surface, and the positioning member is partially disposed in the mounting through hole and abuts against the main board through the limiting ring surface.

[0014] As an optional technical solution for a centering device for circuit breaker conductors, the main board is used to partially block the pull-out and, together with the cylinder, form an operating notch at the pull-out.

[0015] As an optional technical solution for a centering device for circuit breaker conductors, the main board is T-shaped.

[0016] As an optional technical solution for a centering device for circuit breaker conductors, it also includes a connector, through which the main board is detachably mounted on the cylinder.

[0017] As an optional technical solution for a centering device for circuit breaker conductors, the two ends of the connector are respectively inserted into the main board and the cylinder.

[0018] As an optional technical solution for a centering device for circuit breaker conductors, one end of the connector abuts against the main board, and the other end of the connector passes through the main board and is threaded to the cylinder.

[0019] Beneficial effects:

[0020] This utility model provides a centering device for circuit breaker conductors. The circuit breaker includes a cylinder, an arc-extinguishing chamber structure, a conductor, and a basin-type insulator. The arc-extinguishing chamber structure and the conductor are both disposed within the cylinder. The first end of the conductor is installed in the arc-extinguishing chamber structure by fasteners. The second end of the conductor extends to the pull-out end of the cylinder for alignment with the center conductor of the basin-type insulator before assembly. The centering device for circuit breaker conductors includes a main board and a positioning component. The main board is detachably disposed on the cylinder and located at the pull-out end. The positioning component is disposed on the main board, and the position of the positioning component corresponds one-to-one with the position of the center conductor. The positioning component has a positioning hole for inserting the second end of the conductor. The first end of the conductor is initially installed on the arc-extinguishing chamber structure using fasteners. First, an alignment device for the circuit breaker conductor is installed on the cylinder to simulate a basin insulator. The positioning component has positioning holes to simulate the center conductor of the basin insulator. The position of the conductor is adjusted so that the second end of the conductor is aligned with the positioning hole of the positioning component, and the second end of the conductor is inserted into the positioning hole. At this time, the fasteners are tightened to completely fix the first end of the conductor on the arc-extinguishing chamber structure. The alignment device for the circuit breaker conductor is removed from the cylinder before the basin insulator is installed. The conductor position is accurate and can be aligned one by one with the center conductor of the basin insulator. After the conductor and the center conductor of the basin insulator are successfully aligned, they are assembled, which effectively reduces the difficulty of the assembly operation and improves the assembly efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the centering device for circuit breaker conductors and a portion of the circuit breaker provided in this embodiment of the utility model;

[0022] Figure 2 This is a partial structural schematic diagram of the centering device for circuit breaker conductors and the circuit breaker provided in this embodiment of the utility model;

[0023] Figure 3 This is a cross-sectional view of the centering device for circuit breaker conductors and a portion of the circuit breaker provided in this embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the centering device for circuit breaker conductors provided in an embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional view of the centering device for circuit breaker conductors provided in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the motherboard provided in this embodiment of the utility model;

[0027] Figure 7 This is a structural schematic diagram of the positioning component provided in an embodiment of the present utility model.

[0028] In the picture:

[0029] 1. Cylinder body; 2. Arc-extinguishing chamber structure; 3. Conductor;

[0030] A. First notch; B. Second notch; C. Operating notch;

[0031] 10. Main board; 11. Mounting through hole; 12. Auxiliary hole; 20. Positioning component; 21. Positioning hole; 22. Insertion section; 23. Positioning section. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] like Figures 1 to 4As shown, the circuit breaker includes a cylinder 1, an arc-extinguishing chamber structure 2, a conductor 3, and a basin-type insulator. The arc-extinguishing chamber structure 2 and the conductor 3 are both located inside the cylinder 1. The first end of the conductor 3 is installed in the arc-extinguishing chamber structure 2 by fasteners, and the second end of the conductor 3 extends to the opening of the cylinder 1 for alignment with the center conductor of the basin-type insulator before assembly.

[0037] This embodiment provides a centering device for circuit breaker conductors. The centering device for circuit breaker conductors includes a main board 10 and a positioning member 20. The main board 10 is detachably mounted on the cylinder 1 and located at the pull-out end. The positioning member 20 is mounted on the main board 10. The position of the positioning member 20 corresponds one-to-one with the position of the center conductor. The positioning member 20 is provided with a positioning hole 21 for inserting the second end of the conductor 3.

[0038] Using fasteners, the first end of conductor 3 is initially installed on the arc-extinguishing chamber structure 2. First, a centering device for the circuit breaker conductor is detachably installed on the cylinder 1 to simulate a basin insulator. The positioning member 20 is provided with a positioning hole 21 to simulate the center conductor of the basin insulator. The position of conductor 3 is adjusted so that the second end of conductor 3 is aligned with the positioning hole 21 of the positioning member 20, and the second end of conductor 3 is inserted into the positioning hole 21. At this time, the fasteners are tightened to completely fix the first end of conductor 3 on the arc-extinguishing chamber structure 2. The centering device for the circuit breaker conductor is removed from the cylinder 1 and then the basin insulator is installed. The position of conductor 3 is accurate and can be aligned one by one with the center conductor of the basin insulator. After the conductor 3 and the center conductor of the basin insulator are successfully aligned, they are assembled, which effectively reduces the difficulty of assembly operation and improves assembly efficiency.

[0039] In this embodiment, the circuit breaker includes three conductors 3 corresponding to the three phases of the circuit breaker, and three positioning members 20 are also provided accordingly; the center conductor refers to the metal insert inside the basin insulator, and the three conductors 3 are respectively used for alignment with the three center conductors before assembly. Since the outer diameters of the three conductors 3 can be the same or different, the diameters of the positioning holes 21 on the three positioning members 20 can also be the same or different, ensuring that the three positioning holes 21 correspond to the three conductors 3 respectively. Specifically, the cylinder 1 is provided with at least two pull-out openings, so as to... Figure 1 Taking the first cutting port A and the second cutting port B as an example, the first cutting port A and the second cutting port B are arranged opposite to each other on both sides of the cylinder 1; the arc extinguishing chamber structure 2 is located inside the cylinder 1.

[0040] Taking the installation of a basin-type insulator at the first connection point A as an example, in the existing assembly method, if the first end of the conductor 3 is completely fixed to the arc-extinguishing chamber structure 2 using fasteners, the position of the conductor 3 cannot be adjusted subsequently. Under the influence of factors such as processing size error and installation position error, the position of the second end of the conductor 3 is difficult to align with the center conductor of the basin-type insulator when installing the basin-type insulator.

[0041] Therefore, the existing assembly method usually involves inserting the conductor 3 into the cylinder 1 from the first opening A, and firstly using fasteners to preliminarily install the first end of the conductor 3 onto the arc-extinguishing chamber structure 2. When installing the basin insulator, the position of the conductor 3 can be repeatedly adjusted so that the second end of the conductor 3 is aligned with the center conductor of the basin insulator.

[0042] Due to the large size and weight of the basin-type insulator, it affects observation during assembly, making centering difficult and reducing assembly efficiency. Furthermore, the installation of the basin-type insulator closes the first opening A, making it impossible to tighten the fastener at the first opening A. Therefore, the fastener must be tightened from the second opening B to completely fix the first end of the conductor 3 to the arc-extinguishing chamber structure 2. Since the fastener is located on the side of the arc-extinguishing chamber structure 2 facing the first opening A, the location of the fastener cannot be directly observed at the second opening B. Moreover, the distance between the second opening B and the fastener location is far, making the operation very inconvenient. Even after the operation, it is still difficult to ensure that the fastener is tightened.

[0043] Optionally, the main board 10 is used to partially block the pull-out port and form an operating notch with the cylinder 1 at the pull-out port. By setting the main board 10 to partially block the pull-out port, the main board 10 and the cylinder 1 form an operating notch at the pull-out port. When the position of the conductor 3 is adjusted so that the second end of the conductor 3 is aligned with the positioning hole 21 of the alignment device for the circuit breaker conductor, the second end of the conductor 3 is inserted into the positioning hole 21. At this time, the main board 10 does not completely block the pull-out port, and the fastener can be tightened directly from the position of the operating notch to completely fix the first end of the conductor 3 onto the arc-extinguishing chamber structure 2.

[0044] In this embodiment, the main board 10 is T-shaped; the main board 10 and the cylinder 1 form three operating notches C at the first opening A. Operators can directly reach into the cylinder 1 through the operating notches C. Since the fasteners are located on the side of the arc-extinguishing chamber structure 2 facing the first opening A, the location of the fasteners can be directly observed at the operating notches C. This allows for tightening the fasteners to completely fix the first end of the conductor 3 onto the arc-extinguishing chamber structure 2, changing the conductor 3 fastening operation method and solving the problem of inconvenient conductor 3 fastening operation.

[0045] Furthermore, the centering device for the circuit breaker conductor also includes a connector, and the main board 10 is detachably mounted on the cylinder 1 via the connector. By detachably mounting the main board 10 on the cylinder 1 using the connector, the first end of the conductor 3 can be completely fixed to the arc-extinguishing chamber structure 2 while maintaining the stable position of the centering device for the circuit breaker conductor, thus preventing the positional deviation of the centering device from affecting the positional accuracy of the conductor 3; after the first end of the conductor 3 is completely fixed, the centering device for the circuit breaker conductor can be easily removed from the cylinder 1.

[0046] Optionally, the two ends of the connector are inserted into the main board 10 and the cylinder 1, respectively; or, one end of the connector rests against the main board 10, and the other end passes through the main board 10 and is threaded to the cylinder 1. By setting the two ends of the connector to be inserted into the main board 10 and the cylinder 1, the centering device for the circuit breaker conductor can be temporarily positioned and installed on the cylinder 1, and the centering device for the circuit breaker conductor can be removed by pulling out the connector; by setting the connector to be threaded to the cylinder 1, the centering device for the circuit breaker conductor can be removed by loosening the connector.

[0047] In this embodiment, the connector is a bolt. The main board 10 has an auxiliary hole 12, and the cylinder 1 has a threaded hole that matches the auxiliary hole 12. The bolt passes through the auxiliary hole 12 and is threadedly connected to the cylinder 1. In other embodiments, the connector may also be a locating pin with its two ends inserted into the main board 10 and the cylinder 1, respectively.

[0048] See Figures 4 to 7 The positioning component 20 is detachably connected to the main board 10. By setting the positioning component 20 to be detachably connected to the main board 10, it is easy to adjust and replace the positioning component 20 to accommodate conductors 3 with different outer diameters, which is beneficial for disassembly and maintenance.

[0049] To ensure that the position of the positioning hole 21 on the positioning member 20 can simulate the position of the center conductor of the basin insulator, the main board 10 is provided with a mounting through hole 11. The position of the mounting through hole 11 corresponds one-to-one with the position of the center conductor, and the positioning member 20 is at least partially disposed within the mounting through hole 11. By machining mounting through holes 11 on the main board 10 that correspond to the position of the center conductor of the basin insulator, and setting the positioning member 20 at the mounting through hole 11, the position of the positioning hole 21 on the positioning member 20 can simulate the position of the center conductor of the basin insulator. In this embodiment, the mounting through hole 11 is circular, the positioning member 20 is cylindrical, and the axial direction of the positioning member 20 coincides with the axial direction of the mounting through hole 11. In other embodiments, the positioning member 20 can also be interference-fitted with the mounting through hole 11 of the main board 10.

[0050] Optionally, the positioning element 20 is provided with external threads, and the mounting through hole 11 is a threaded hole, with the positioning element 20 threadedly engaging with the mounting through hole 11. By engaging the positioning element 20 with the mounting through hole 11, the connection stability between the positioning element 20 and the main board 10 is ensured during the use of the alignment device for circuit breaker conductors. Furthermore, after use, the positioning element 20 can be removed from the main board 10 by loosening the screws, facilitating maintenance and replacement.

[0051] Furthermore, the positioning member 20 is provided with a limiting ring surface. The positioning member 20 is partially disposed within the mounting through hole 11 and abuts against the motherboard 10 through the limiting ring surface. By providing a limiting ring surface on the positioning member 20, the positioning member 20 is partially disposed within the mounting through hole 11 and is limited by the limiting ring surface, thereby restricting the insertion depth of the positioning member 20 at the mounting through hole 11 and ensuring the accuracy of the relative position between the positioning member 20 and the motherboard 10.

[0052] In this embodiment, the positioning member 20 includes an insertion section 22 and a positioning section 23. The positioning section 23 is connected to the insertion section 22. The positioning hole 21 is a circular through hole that passes through both the insertion section 22 and the positioning section 23. The outer diameter of the insertion section 22 is smaller than the outer diameter of the positioning section 23, so as to form a limiting ring surface between the insertion section 22 and the positioning section 23. The positioning section 23 is located on the side of the insertion section 22 away from the motherboard 10. The insertion section 22 is provided with external threads for engaging with the mounting through hole 11. The insertion section 22 of the positioning member 20 is aligned with the mounting through hole 11 of the motherboard 10. The insertion section 22 is rotated to gradually insert the positioning member 20 into the mounting through hole 11 until the positioning member 20 abuts against the motherboard 10 through the limiting ring surface, thus completing the assembly of the positioning member 20 and the motherboard 10.

[0053] The following is a detailed description of the usage process of the centering device for circuit breaker conductors:

[0054] Taking the first breakout point A as an example, it is necessary to ensure that the position of the positioning hole 21 of the centering device for the circuit breaker conductor can correspond one-to-one with the position of the center conductor of the basin insulator to be installed later. That is, a motherboard 10 and positioning piece 20 of appropriate size are used and assembled. The centering device used for the circuit breaker conductor can simulate the basin insulator.

[0055] First, the first end of conductor 3 is initially installed on the arc-extinguishing chamber structure 2 using fasteners. A centering device for the circuit breaker conductor is placed on the cylinder 1 to simulate a basin insulator, ensuring that the positioning member 20 is located on the side of the main board 10 facing the cylinder 1. The positioning hole 21 is used to simulate the center conductor of the basin insulator. The position of conductor 3 is adjusted so that the second end of conductor 3 is aligned with the positioning hole 21 of the positioning member 20, and the second end of conductor 3 is inserted into the positioning hole 21. The centering device for the circuit breaker conductor is detachably fixed on the cylinder 1 using connectors. The main board 10 partially blocks the first opening A. The main board 10 and the cylinder 1 form three operating notches C at the first opening A.

[0056] At this point, under the action of the centering device for the circuit breaker conductor, the position of conductor 3 is determined and kept stationary. Next, the operator can reach into the cylinder 1 through the operating notch C and tighten the fasteners to ensure that the first end of conductor 3 is completely fixed on the arc-extinguishing chamber structure 2.

[0057] Finally, the centering device for the circuit breaker conductor is removed from the cylinder 1, and the basin insulator is installed on the cylinder 1. Since the centering device for the circuit breaker conductor has already simulated the basin insulator and adjusted the position of the conductor 3, the position of the conductor 3 can be aligned one-to-one with the center conductor of the basin insulator when installing the basin insulator. This can effectively reduce the offset between the position of the conductor 3 and the position of the center conductor of the basin insulator. The assembly of the conductor 3 has good alignment and can be smoothly aligned with the center conductor of the basin insulator before assembly, which effectively reduces the difficulty of the assembly operation and improves the assembly efficiency.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A centering device for a circuit breaker conductor, the circuit breaker comprising a cylinder (1), an arc-extinguishing chamber structure (2), a conductor (3), and a basin-type insulator, wherein the arc-extinguishing chamber structure (2) and the conductor (3) are both disposed within the cylinder (1), a first end of the conductor (3) is fastened to the arc-extinguishing chamber structure (2) by fasteners, and a second end of the conductor (3) extends to the opening of the cylinder (1) for centering with the center conductor of the basin-type insulator before assembly, characterized in that, include: Main board (10) is detachably mounted on the cylinder (1) and located at the opening; Positioning component (20) is provided on the main board (10). The position of the positioning component (20) corresponds one-to-one with the position of the center conductor. The positioning component (20) is provided with positioning hole (21) for the second end of the conductor (3) to be inserted.

2. The centering device for circuit breaker conductors according to claim 1, characterized in that, The positioning element (20) is detachably connected to the motherboard (10).

3. The centering device for circuit breaker conductors according to claim 2, characterized in that, The motherboard (10) is provided with mounting through holes (11), the mounting through holes (11) are positioned in a position corresponding to the position of the center conductor, and the positioning member (20) is at least partially disposed in the mounting through holes (11).

4. The centering device for circuit breaker conductors according to claim 3, characterized in that, The positioning element (20) is provided with external threads, and the mounting through hole (11) is a threaded hole. The positioning element (20) is threadedly engaged with the mounting through hole (11).

5. The centering device for circuit breaker conductors according to claim 3, characterized in that, The positioning member (20) is provided with a limiting ring surface. The positioning member (20) is partially disposed in the mounting through hole (11) and abuts against the main board (10) through the limiting ring surface.

6. The centering device for circuit breaker conductors according to any one of claims 1-5, characterized in that, The main board (10) is used to partially cover the opening and together with the cylinder (1) form an operating notch at the opening.

7. The centering device for circuit breaker conductors according to claim 6, characterized in that, The motherboard (10) is T-shaped.

8. The centering device for circuit breaker conductors according to any one of claims 1-5, characterized in that, It also includes a connector, through which the main board (10) is detachably mounted on the cylinder (1).

9. The centering device for circuit breaker conductors according to claim 8, characterized in that, The two ends of the connector are respectively inserted into the main board (10) and the cylinder (1).

10. The centering device for circuit breaker conductors according to claim 8, characterized in that, One end of the connector abuts against the main board (10), and the other end of the connector passes through the main board (10) and is threaded to the cylinder (1).

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