Three-station disconnecting switch detection device

Abstract

A three-station disconnecting switch detection device comprises a shell, an insulating shaft and an end cover, the insulating shaft is arranged in the shell, and the insulating shaft penetrates through the shell and is rotationally connected with the shell; one end of the insulating shaft is provided with a plug, and the other end of the insulating shaft is provided with a connecting hole; an end cover is arranged on one side, in the same direction with the connecting hole, of the shell, and a through hole through which the connecting shaft can penetrate is formed in the end cover; a middle position marking line, an isolation side closing position marking line and a grounding side closing position marking line are arranged on the outer surface of the end cover at intervals in the circumferential direction, an indication datum line located on the outer side of the connecting hole is arranged at the end of the insulating shaft, and the indication datum line can correspond to the middle position marking line, the isolation side closing position marking line and the grounding side closing position marking line. The three-position isolating switch detection device is reasonable in design, simple in structure and convenient to operate, can effectively reduce the detection difficulty of the internal working condition of the switch, and improves the in-plant general assembly operation and on-site maintenance and overhaul efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of three-position isolating switches, in particular to a three-position isolating switch detection device. Background Art

[0002] A three-position disconnector is an electrical device with three primary operating positions: the closed position (where the disconnector's main terminals are connected), the isolated position (where the main terminals are separated), and the grounded position (where the disconnector's grounding is located). The three-position disconnector integrates the functions of an isolator and a grounding switch, achieving switching between the three positions using a single switch. This provides three distinct operating positions: closed, isolated, and grounded, avoiding potential misoperation issues associated with traditional disconnectors.

[0003] The operating principle of the three-position disconnect switch is based on its unique mechanical structure and operating mechanism. To switch positions, the operator manually or electrically turns the switch handle, switching the blades between closed, disconnected, and earthed positions. Each position is clearly indicated and locked by a locking mechanism, ensuring the switch is in the correct position and preventing accidental operation.

[0004] Currently, to ensure the production quality of three-position disconnect switches, manufacturers require staff to test the closing and opening torques of the three positions after the switches are packaged: the neutral position, the isolated-side closed position, and the grounded-side closed position. However, in actual operation, aligning the switch's moving contacts with the three positions is difficult. It is difficult for staff to determine whether the moving contacts fully correspond to the three positions, making the operation difficult and significantly reducing the efficiency of factory assembly operations and on-site maintenance and repair. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology such as difficulty in operation and low work efficiency, and to provide a three-station isolating switch detection device with reasonable design, simple structure, and convenient operation. It can effectively reduce the detection difficulty of the switch station and improve the efficiency of factory assembly operations and on-site maintenance and repair.

[0006] The utility model is realized by the following technical solutions:

[0007] A three-position disconnect switch detection device includes a shell, an insulating shaft and an end cover, wherein an insulating shaft is provided inside the shell, the insulating shaft passes through the shell and is rotatably connected to the shell; a plug is provided at one end of the insulating shaft, which matches the moving contact of the three-position disconnect switch; a connecting hole is provided at the other end of the insulating shaft, which matches the connecting shaft of the tooling; an end cover is provided on the side of the shell in the same direction as the connecting hole, and a through hole is provided on the end cover that can pass through the connecting shaft; a neutral position marking line, an isolation side closing position marking line and a grounding side closing position marking line are provided on the outer surface of the end cover at intervals along the circumferential direction, and the neutral position marking line can correspond to the neutral position of the moving contact, the isolation side closing position marking line can correspond to the isolation side closing position of the moving contact, and the grounding side closing position marking line can correspond to the grounding side closing position of the moving contact; an indicating reference line is provided at the end of the insulating shaft, which is located outside the connecting hole, and the indicating reference line can correspond to the neutral position marking line, the isolation side closing position marking line and the grounding side closing position marking line respectively.

[0008] A further improvement of the present invention is that the housing, the insulating shaft, the connecting hole, the plug, the end cover and the through hole are coaxially arranged.

[0009] A further improvement of the present invention is that the connecting hole and the connecting shaft are both square structures.

[0010] A further improvement of the present invention is that the indicating reference line is located at a corner of the connecting hole, and the indicating reference line corresponds to the bisector of the corner.

[0011] A further improvement of the present invention is that the diameter of the through hole is larger than the diameter of the connecting hole, and the diameter of the through hole is smaller than the diameter of the insulating shaft.

[0012] A further improvement of the present invention is that a marking letter Z close to the neutral position marking line, a marking letter G close to the isolation side closed position marking line, and a marking letter J close to the grounding side closed position marking line are provided on the outer surface of the end cover. The marking letter Z is used to represent the neutral position of the moving contact, the marking letter G is used to represent the isolation side closed position of the moving contact, and the marking letter J is used to represent the grounding side closed position of the moving contact.

[0013] From the above technical solutions, it can be seen that the beneficial effects of the present invention are as follows: the device is reasonably designed, simple in structure, and easy to operate; it solves the problem of being unable to quickly detect the calibration between the moving contact and the work station when the switch is in a packaged state in the factory or during on-site maintenance and repair, when the mechanism is not installed or removed; thereby effectively reducing the difficulty of detecting the switch work station and improving the efficiency of the factory assembly operation and on-site maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only 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.

[0015] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the end cover of a specific embodiment of the utility model.

[0017] 1. Housing; 2. Insulating shaft; 3. Connecting hole; 4. Plug; 5. Connecting shaft; 6. End cover; 7. Center position marking line; 701, marking letter Z; 8. Isolation side closing position marking line; 801, marking letter G; 9. Grounding side closing position marking line; 901, marking letter J; 10. Bolt. DETAILED DESCRIPTION

[0018] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0019] Please refer to the attached Figure 1 and Figure 2 , combined with a specific embodiment, it is described as follows: A three-position disconnector detection device described in the utility model includes a shell 1, an insulating shaft 2 and an end cover 6. The insulating shaft 2 is provided inside the shell 1, and the insulating shaft 2 passes through the shell 1 and is rotatably connected to the shell 1; a plug 4 is provided at one end of the insulating shaft 2, and the plug 4 matches the moving contact of the three-position disconnector; a connecting hole 3 is provided at the other end of the insulating shaft 2, and the connecting hole 3 matches the connecting shaft 5 of the tooling; the shell 1 is assembled with an end cover 6 on the side in the same direction as the connecting hole 3 by a bolt 10, and a through hole is provided on the end cover 6 to allow the connecting shaft 5 to pass through.

[0020] Specifically, the insulating shaft 2, the connecting hole 3 and the plug 4 together constitute the insulating shaft body, the insulating shaft 2 is the main insulating part, the connecting hole 3 is the insert, and the insulating shaft 2 is integrally connected with the plug 4, and the plug 4 is a plug-in component; and the shell 1 can adopt a metal shell, and the shell 1 is equipped with a grounding wire.

[0021] Specifically, the housing 1 , the insulating shaft 2 , the connecting hole 3 , the plug 4 , the end cover 6 and the through hole are coaxially arranged, and the connecting hole 3 and the connecting shaft 5 are both square structures.

[0022] A center position marking line 7, an isolation side closing position marking line 8 and a grounding side closing position marking line 9 are arranged at intervals along the circumferential direction on the outer surface of the end cover 6, and the center position marking line 7 can correspond to the center position of the moving contact, the isolation side closing position marking line 8 can correspond to the isolation side closing position of the moving contact, and the grounding side closing position marking line 9 can correspond to the grounding side closing position of the moving contact; the end of the insulating shaft 2 is provided with an indicating reference line located outside the connecting hole 3, and the indicating reference line can correspond to the center position marking line 7, the isolation side closing position marking line 8 and the grounding side closing position marking line 9 respectively.

[0023] The indicator benchmark of this utility model is established:

[0024] Before the internal assembly and packaging of the three-position disconnector is completed, the staff will plug the plug 4 at one end of the insulating shaft 2 into the moving contact, and plug the connecting shaft 5 of the tool into the connecting hole 3 at the other end of the insulating shaft 2. After the assembly is completed, the staff will observe the position of the moving contact inside the switch and measure the relative position, then use the tool to drive the insulating shaft 2 to adjust the moving contact to the middle position, and then engrave an indication reference line at the position outside the connecting hole 3. At the same time, engrave a middle position marking line 7 corresponding to the indication reference line on the outer surface of the end cover 6. Similarly, use the tool to drive the insulating shaft 2 to adjust the moving contact to the isolation side closed position, and at this time, engrave an isolation side closed position marking line 8 corresponding to the indication reference line on the outer surface of the end cover 6. Similarly, use the tool to drive the insulating shaft 2 to adjust the moving contact to the grounding side closed position, and at this time, engrave a grounding side closed position marking line 9 corresponding to the indication reference line on the outer surface of the end cover 6. After the three-position status indication reference is established, the overall packaging of the three-position disconnector is carried out.

[0025] The operating principle of this utility model:

[0026] The indicator reference line points to the center position mark line 7, and the moving contact is in the center position; at this time, based on the center position, the staff rotates the moving contact counterclockwise or clockwise through the insulation to carry out subsequent operations. When the indicator reference line points to the isolation side closing position mark line 8, the tooling drives the insulating shaft 2 and rotates it counterclockwise without stopping, then the moving contact is in the isolation side closing position, so that it can be determined that the moving contact corresponds to the isolation side closing position. When the indicator reference line points to the grounding side closing position mark line 9, the tooling drives the insulating shaft 2 and rotates it clockwise without stopping, then the switch is in the grounding side closing position, so that it can be determined that the moving contact corresponds to the isolation side closing position. This time, the staff can quickly determine that the moving contact of the switch is calibrated with the work position, and the switch is a qualified product.

[0027] The angle between the median mark line 7 and the isolation side closing mark line 8 is recorded as β, the angle between the median mark line 7 and the grounding side closing mark line 9 is recorded as α, and the angle between the isolation side closing mark line 8 and the grounding side closing mark line 9 is recorded as γ.

[0028] When the indicator reference line is within the angle range of β, the moving contact is on the ground side; when the indicator reference line is within the angle range of α, the moving contact is on the isolation side; when the indicator reference line is within the angle range of γ, the tooling is used to drive the insulating shaft 2 and rotate the indicator reference line clockwise to the ground side closed position mark line 9. If it cannot be rotated, it means that the moving contact is on the ground side. If it can continue to rotate to the angle range of α, the moving contact is on the isolation side. At this point, the staff can quickly determine that the switch's moving contact and work position are out of alignment and require subsequent maintenance work.

[0029] In one embodiment, the indicating reference line is located at a corner of the connecting hole 3, and the indicating reference line corresponds to the bisector of the corner. The above design is more reasonable, so that the staff can observe the indicating reference line more easily.

[0030] In one embodiment, the diameter of the through hole is larger than the diameter of the connecting hole 3, and smaller than the diameter of the insulating shaft 2. This design creates an observation area between the through hole and the connecting hole 3 where the indicator reference line can be observed, allowing staff to more clearly observe the indicator reference line.

[0031] In one embodiment, the outer surface of the end cap 6 is provided with markings Z701 near the neutral position marking line 7, G801 near the isolated side closed position marking line 8, and J901 near the grounded side closed position marking line 9. The markings Z701 represent the neutral position of the moving contact, G801 represent the isolated side closed position of the moving contact, and J901 represent the grounded side closed position of the moving contact. The design of these markings can further enhance the observation effect of the staff.

[0032] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0033] The terms "upper," "lower," "outer," "inner," and the like, if used in the specification and claims of the present invention and the accompanying drawings, are used to distinguish relative positions and do not necessarily define them. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0034] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A three-position disconnect switch detection device, comprising a housing (1), an insulating shaft (2) and an end cover (6), characterized in that: An insulating shaft (2) is provided inside the housing (1), the insulating shaft (2) passes through the housing (1) and is rotatably connected to the housing (1); a plug (4) is provided at one end of the insulating shaft (2), the plug (4) matches the moving contact of the three-position disconnector; a connecting hole (3) is provided at the other end of the insulating shaft (2), the connecting hole (3) matches the connecting shaft (5) of the tool; an end cover (6) is provided on the side of the housing (1) in the same direction as the connecting hole (3), the end cover (6) is provided with a through hole capable of passing through the connecting shaft (5); the outer surface of the end cover (6) is provided with a through hole along the circumferential direction. A neutral position marking line (7), an isolation side closing position marking line (8), and a grounding side closing position marking line (9) are provided, and the neutral position marking line (7) can correspond to the neutral position of the moving contact, the isolation side closing position marking line (8) can correspond to the isolation side closing position of the moving contact, and the grounding side closing position marking line (9) can correspond to the grounding side closing position of the moving contact; an indicating reference line located outside the connecting hole (3) is provided at the end of the insulating shaft (2), and the indicating reference line can correspond to the neutral position marking line (7), the isolation side closing position marking line (8), and the grounding side closing position marking line (9), respectively.

2. A three-position disconnect switch detection device according to claim 1, characterized in that: The housing (1), the insulating shaft (2), the connecting hole (3), the plug (4), the end cover (6) and the through hole are coaxially arranged.

3. A three-position disconnect switch detection device according to claim 2, characterized in that: The connecting hole (3) and the connecting shaft (5) are both square structures.

4. A three-position disconnect switch detection device according to claim 3, characterized in that: The indicating reference line is located at an edge corner of the connecting hole (3), and the indicating reference line corresponds to the bisector of the edge corner.

5. A three-position disconnect switch detection device according to claim 4, characterized in that: The diameter of the through hole is larger than the diameter of the connecting hole (3), and the diameter of the through hole is smaller than the diameter of the insulating shaft (2).

6. A three-position disconnect switch detection device according to claim 5, characterized in that: The outer surface of the end cover (6) is provided with a marking letter Z (701) close to the neutral position marking line (7), a marking letter G (801) close to the isolation side closed position marking line (8), and a marking letter J (901) close to the grounding side closed position marking line (9), wherein the marking letter Z (701) is used to represent the neutral position of the moving contact, the marking letter G (801) is used to represent the isolation side closed position of the moving contact, and the marking letter J (901) is used to represent the grounding side closed position of the moving contact.

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