High-voltage circuit breaker with protection structure

Abstract

The utility model relates to the technical field of power equipment, and particularly discloses a high-voltage circuit breaker with a protection structure, which comprises a mechanism box, a high-voltage circuit breaker body arranged on the mechanism box, and a protection structure detachably connected to the top end of the high-voltage circuit breaker body and wrapping an upper wiring terminal, the protection structure comprises a rotating pipe which is rotatably connected to the bolt on the inner side of the notch of the connecting part, a first cover plate which is fixedly connected with the rotating pipe and covers the end face of the connecting part, and a second cover plate which is detachably connected with the first cover plate and covers the end face of the straight part, and the first cover plate is provided with a first end cover which is used for accommodating and wrapping the upper outgoing line terminal. And the second cover plate is provided with a second end cover used for accommodating and wrapping the connection part of the straight part and the external circuit, so that the problem that an integrated insulating cover is arranged at the wiring terminal of the traditional high-voltage circuit breaker for protection, but the insulating cover cannot cover the connection part of the wiring terminal and the external circuit due to inconvenience in adjustment is solved.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and specifically discloses a high-voltage circuit breaker with a protection structure. Background Art

[0002] High-voltage circuit breakers play a controlling role in high-voltage circuits and are one of the important electrical components in high-voltage circuits. High-voltage circuit breakers can not only cut off or close the no-load current and load current in high-voltage circuits, but also cut off the overload current and short-circuit current through the action of the relay protection device when a system failure occurs, and have arc extinguishing and current interruption capabilities. At the same time, they are also equipped with current transformers, voltage transformers, and intelligent controllers, etc., to achieve over-current and speed-off protection, grounding protection, high and low gas protection, overvoltage, undervoltage protection, primary and secondary fusion control protection, etc.

[0003] Conventional high-voltage circuit breakers are usually connected to the external circuit through the upper outlet terminal at the top and the lower outlet seat installed through the current transformer. The upper outlet terminal is fixed with an upper terminal by bolts, and the lower outlet seat is connected to the lower terminal. The structure of the upper terminal can be roughly as follows: a connecting part connected to the upper outlet terminal and a straight part connected to the external circuit, and a transition section is provided between the connecting part and the straight part. A notch is opened on the connecting part, and threaded holes are opened on both sides of the notch. Bolts are fixed through the threaded holes on both sides of the notch to clamp the connecting part on the upper outlet terminal.

[0004] Usually, an integrated insulating cover is provided at the connection part, which can effectively prevent foreign substances from entering the high-voltage circuit breaker body from the upper outlet terminal, and can also prevent the filling gas inside the high-voltage circuit breaker from escaping. However, the insulating cover is an integrated structure, which is not easy to remove after being set on the upper outlet terminal, and cannot cover the straight part of the upper terminal, so it cannot protect the circuit connection.

[0005] Therefore, in view of this, the inventor provides a high-voltage circuit breaker with a protection structure to solve the above-mentioned problem. Utility Model Content

[0006] The utility model aims to solve the problem that the connection terminals of the traditional high-voltage circuit breaker are provided with an integrated insulating cover for protection, but the insulating cover cannot cover the connection part between the connection terminals and the external circuit because it is inconvenient to adjust.

[0007] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a high-voltage circuit breaker with a protective structure, including a mechanism box, a high-voltage circuit breaker body arranged on it, a safety mechanism arranged in the mechanism box for controlling the opening and closing of the internal structure of the high-voltage circuit breaker body, a pressure detection mechanism arranged in the mechanism box and connected to the high-voltage circuit breaker body, and a current protection component and a voltage protection component connected to the high-voltage circuit breaker body. It also includes a protective structure that is detachably connected to the top of the high-voltage circuit breaker body and wraps the upper wiring terminal. The protective structure includes a rotating tube rotatably connected to the bolt on the inner side of the notch of the connecting part, a first cover plate fixedly connected to the rotating tube and covering the end face of the connecting part, and a second cover plate detachably connected to the first cover plate and covering the end face of the straight part. The first cover plate is provided with a first end cover for accommodating and wrapping the upper outlet terminal, and the second cover plate is provided with a second end cover for accommodating and wrapping the connection between the straight part and the external circuit.

[0008] Furthermore, an arc segment capable of wrapping the inner end of the connecting portion is provided on the inner side of the first cover plate.

[0009] Furthermore, outer edges of the first cover plate and the second cover plate extend outward to the outside of the connecting portion and the straight portion.

[0010] Furthermore, the first cover plate and the second cover plate are both provided with keys on the inner side thereof which can be respectively locked on the bottom surface of the connecting portion and the straight portion.

[0011] Furthermore, main connecting platforms are provided on both sides of the first cover plate, and auxiliary connecting platforms slidably connected to the inner side of the main connecting platforms are provided on both sides of the second cover plate, and a key that can be stuck at the bottom of the straight part is provided on the inner side of the auxiliary connecting platforms.

[0012] Furthermore, a latch key is provided on the inner side of the second cover plate and can be latched on the bottom surface of the lower terminal.

[0013] Furthermore, the first cover plate and the second cover plate are provided with a first transition surface and a second transition surface respectively transitioning with the first end cover and the second end cover.

[0014] The principle and effect of this scheme are:

[0015] 1. Compared with the prior art, the utility model is provided with a protective structure to wrap the upper terminal of the high-voltage circuit breaker body, and the first cover plate and the second cover plate provided in the protective structure respectively wrap the connection part and the straight part of the upper terminal, so as to protect the upper outlet terminal and the connection part between the upper terminal and the external circuit, thereby solving the problem that the connection terminal of the traditional high-voltage circuit breaker is provided with an integrated insulating cover for protection, but the insulating cover cannot cover the connection part between the connection terminal and the external circuit because it is not convenient to adjust.

[0016] 2. Compared with the prior art, the utility model can realize the rotation of the first cover plate and the second cover plate after the rotating tube is installed into the notch of the connecting part and the bolt passes through. After the external circuit is connected to the straight part, the second cover plate and the first cover plate are closed to realize the protection of the upper wiring pair and the connection of the external circuit. In addition, the inner side of the second cover plate of the utility model is also provided with a key that can be stuck on the bottom surface of the lower wiring terminal. The second cover plate can also act alone on the lower wiring terminal and the connection between the lower wiring terminal and the external circuit to realize the protection of the lower wiring terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of a high-voltage circuit breaker with a protection structure proposed in an embodiment of the present application is shown;

[0019] Figure 2 A schematic diagram of a protection structure of a high-voltage circuit breaker with a protection structure proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] The figure marks in the drawings of the specification include: mechanism box 1, high-voltage circuit breaker body 2, upper outlet terminal 3, connecting part 4, straight part 5, key 6, second cover plate 7, second end cover 8, first cover plate 9, first end cover 10, lower terminal 11, bolt 12, main connecting platform 13, rotating tube 14.

[0022] A high voltage circuit breaker with a protection structure, for example Figure 1 and Figure 2 As shown:

[0023] The invention comprises a mechanism box 1, a high-voltage circuit breaker body 2 installed on the mechanism box 1, a safety mechanism installed in the mechanism box 1 and used to control the opening and closing of the internal structure of the high-voltage circuit breaker body 2, a pressure detection mechanism installed in the mechanism box 1 and connected to the high-voltage circuit breaker body 2, and a current protection component and a voltage protection component connected to the high-voltage circuit breaker body 2. The above structures are all structures and components commonly used on high-voltage circuit breakers in the prior art.

[0024] In this embodiment, a protective structure for wrapping the upper terminal is also installed at the top of the high-voltage circuit breaker body 2. The protective structure includes a rotating tube 14 installed on the bolt 12 inside the notch of the connecting portion 4 of the upper terminal, a first cover plate 9 fixedly connected to the rotating tube 14 and covering the end surface of the connecting portion 4, and a second cover plate 7 installed outside the first cover plate 9 and covering the end surface of the straight portion 5, and the first cover plate 9 and the second cover plate 7 are detachably connected.

[0025] The first cover plate 9 is also provided with a first receiving groove for the upper outlet terminal 3 to extend into, and a first end cover 10 covering the first receiving groove and wrapping the upper outlet terminal 3 is formed integrally on the first cover plate 9, and a first transition surface is provided between the first end cover 10 and the inner side of the first cover plate 9. The second cover plate 7 is provided with a second receiving groove for the connection between the straight portion 5 and the external circuit to extend into, and a second end cover 8 covering the second receiving groove and wrapping the connection between the straight portion 5 and the external circuit is formed integrally on the second cover plate 7, and a second transition surface is also provided between the second end cover 8 and the inner side of the second cover plate 7.

[0026] The first cover plate 9 is integrally formed with an arc segment on the inner side that can wrap the inner end of the connecting portion 4. When the rotating tube 14 is installed on the bolt 12 on the inner side of the notch of the connecting portion 4, the rotating tube 14 can rotate on the bolt 12 and drive the first cover plate 9 to rotate synchronously, and the arc segment on the first cover plate 9 wraps and protects the inner end of the connecting portion 4. In this embodiment, the outer edges of the first cover plate 9 and the second cover plate 7 both extend outward to the outer sides of the connecting portion 4 and the straight portion 5.

[0027] like Figure 2 As shown, main connecting platforms 13 are formed integrally on both sides of the outer end of the first cover plate 9, and auxiliary connecting platforms are formed integrally on both sides of the inner end of the second cover plate 7. A limiting slide is opened downward from the top of the main connecting platform 13, the outer wall of the auxiliary connecting platform is attached to the inner wall of the main connecting platform 13 and can slide against each other, and limiting slides that can slide into the limiting slides are formed integrally on the outer side of the auxiliary connecting platform, and the bottom of the limiting slide is supported by the inner bottom surface of the limiting slide.

[0028] The first cover plate 9 and the second cover plate 7 extending outward from the connecting portion 4 and the straight portion 5 are integrally formed with a key 6 that can be respectively stuck on the connecting portion 4 and the straight portion 5 bottom surface. The second cover plate 7 is also integrally formed with a key 6 that can be stuck on the straight portion 5 bottom surface on the inner side of the auxiliary connecting platform on both sides.

[0029] The first cover plate 9 can be separated from the second cover plate 7, and the second cover plate 7 can act on the straight portion 5 alone. In the present embodiment, the second cover plate 7 can also cover the lower wiring terminal 11. When the lower wiring terminal 11 is connected to an external circuit, the second cover plate 7 can be placed on the lower wiring terminal 11 and stuck on the bottom surface of the lower wiring terminal 11 through the key 6 provided on the second cover plate 7, so as to protect the lower wiring terminal 11 and the external circuit structure connected to the lower wiring terminal 11.

[0030] When the utility model is used, in the process of installing the connecting part 4 and the straight part 5 on the upper terminal, the rotating tube 14 is placed on the inner side of the notch of the connecting part 4, and the bolts 12 are passed through the threaded holes on both sides of the notch and the rotating tube 14, and then the auxiliary connecting platform of the second cover plate 7 is placed into the main connecting platform 13 of the first cover plate 9, and the external circuit is connected to the straight part 5, and the second cover plate 7 and the first cover plate 9 are closed to protect the connecting part 4, the straight part 5 and the connection with the external circuit. Of course, the second cover plate 7 can also act alone, acting alone on the lower terminal 11 and the external circuit structure connected to the lower terminal 11, and the lower terminal 11 and the external circuit structure connected to the lower terminal 11 are wrapped by the second cover plate 7 to protect them.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high-voltage circuit breaker with a protective structure, comprising a mechanism box, a high-voltage circuit breaker body arranged thereon, a safety mechanism arranged in the mechanism box for controlling the opening and closing of the internal structure of the high-voltage circuit breaker body, a pressure detection mechanism arranged in the mechanism box and connected to the high-voltage circuit breaker body, and a current protection component and a voltage protection component connected to the high-voltage circuit breaker body, characterized in that: It also includes a protective structure that is detachably connected to the top of the high-voltage circuit breaker body and wraps the upper wiring terminal. The protective structure includes a rotating tube that is rotatably connected to a bolt on the inner side of the notch of the connecting part, a first cover plate that is fixed to the rotating tube and covers the end face of the connecting part, and a second cover plate that is detachably connected to the first cover plate and covers the end face of the straight part. The first cover plate is provided with a first end cover for accommodating and wrapping the upper outlet terminal, and the second cover plate is provided with a second end cover for accommodating and wrapping the connection between the straight part and the external circuit.

2. A high voltage circuit breaker with a protective structure according to claim 1, characterized in that: An arc segment capable of wrapping the inner end of the connecting portion is provided on the inner side of the first cover plate.

3. A high voltage circuit breaker with a protective structure according to claim 1, characterized in that: The outer edges of the first cover plate and the second cover plate both extend outward to the outside of the connecting portion and the straight portion.

4. A high voltage circuit breaker with a protective structure according to claim 3, characterized in that: The first cover plate and the second cover plate are both provided with keys on the inner side which can be respectively stuck on the bottom surface of the connecting part and the straight part.

5. A high voltage circuit breaker with a protective structure according to claim 3, characterized in that: The first cover plate is provided with main connecting platforms on both sides, the second cover plate is provided with auxiliary connecting platforms slidably connected to the inner side of the main connecting platforms on both sides, and the inner side of the auxiliary connecting platforms is provided with a key that can be stuck at the bottom of the straight part.

6. A high voltage circuit breaker with a protection structure according to claim 3, characterized in that: The inner side of the second cover plate is provided with a key which can be stuck on the bottom surface of the lower connecting terminal.

7. A high voltage circuit breaker with a protection structure according to claim 1, characterized in that: The first cover plate and the second cover plate are provided with a first transition surface and a second transition surface respectively transitioning with the first end cover and the second end cover.

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