Plateau type circuit breaker

Abstract

The utility model discloses a plateau type circuit breaker, which relates to the technical field of power equipment and comprises a box body, an opening is arranged on one side of the box body, a bottom plate is arranged in the box body and can be pulled out from the opening, and a plurality of circuit breaking structures used for cutting off a circuit are mounted on the bottom plate. The two sides of each circuit breaking structure are symmetrically connected with wire inlet and outlet terminals which are used for forming a conductive loop and located on the two sides of the box body, and the side, provided with an opening, of the box body is connected with an operation panel. The beneficial effects are that the incoming and outgoing line terminals and the circuit breaking structure are connected through the bolts, the dismounting is convenient, and the arrangement of the bottom plate facilitates the extraction of internal equipment from the box body, and facilitates the debugging; a sealing ring arranged at the mounting hole and a sealing ring arranged at the operation panel and the opening ensure that the interior of the box body is in a closed space, so that gas is filled into the gas filling hole to increase the internal pressure of the box body; and by arranging an explosion-proof device, the internal pressure is controlled within a certain safety range.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power equipment, especially a plateau type circuit breaker. BACKGROUND

[0002] The atmospheric pressure is low and the air is thin in high-altitude areas, and the electrical equipment has special requirements on performance, the plateau circuit breaker ensures reliable breaking of the circuit under the high-altitude environment through improving the insulation structure and enhancing the arc extinguishing capacity, the plateau environment affects the performance parameters of the circuit breaker, and the equipment needs to be adjusted and optimized according to the actual situation during debugging, and it may need to be tested and adjusted for many times to ensure normal operation in the high-altitude environment, the existing plateau circuit breaker is relatively cumbersome to disassemble and assemble during installation and debugging, greatly increasing the working difficulty. SUMMARY

[0003] This section aims to outline some aspects of the embodiments and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above or the problems existing in the prior art, the utility model is proposed, which can solve the technical problem of complicated installation and debugging of the circuit breaker.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a plateau type circuit breaker, comprising a box body, an opening is arranged on one side of the box body, a bottom plate is arranged in the box body, the bottom plate can be pulled out from the opening, a plurality of circuit breaking structures for isolating circuits are arranged on the bottom plate, inlet and outlet terminals for forming a conductive loop and located on both sides of the box body are symmetrically connected to both sides of each circuit breaking structure, and an operation panel is connected to the side of the box body with the opening.

[0006] As a preferred scheme of the utility model, the inlet and outlet terminals are connected to the circuit breaking structures in the box body through mounting holes.

[0007] As a preferred scheme of the utility model, an operating mechanism for breaking and closing energy storage is arranged on one side of the bottom plate, and the operating mechanism is controlled through the operation panel.

[0008] As a preferred scheme of the utility model, an inflation structure is arranged on one side of the box body, the inflation structure comprises an inflation hole, and a sealing cover is arranged on the inflation hole.

[0009] As a preferred scheme of the highland type circuit breaker, the box body is provided with an explosion-proof device for controlling the air pressure in the box body, and the explosion-proof device is provided with a protective plate.

[0010] As a preferred scheme of the highland type circuit breaker, each circuit breaking structure comprises an insulation box, the insulation box is provided with insulation pull rods, one end of the insulation pull rod is provided with a contact spring, and the insulation pull rods are connected through a transmission main shaft.

[0011] As a preferred scheme of the highland type circuit breaker, the insulation box further comprises a vacuum arc-extinguishing chamber capable of rapidly switching on and off a conductive loop, and the vacuum arc-extinguishing chamber is controlled through the insulation pull rods.

[0012] As a preferred scheme of the highland type circuit breaker, one side of each insulation box is provided with a current transformer.

[0013] As a preferred scheme of the highland type circuit breaker, the number of the circuit breaking structures is three, and the circuit breaking structures are evenly arranged along the moving direction of the bottom plate.

[0014] The highland type circuit breaker has the following beneficial effects: the in-out line terminals and the circuit breaking structures are connected through bolts, so that the circuit breaking structures can be conveniently disassembled, the bottom plate is arranged to facilitate the extraction of the internal equipment from the box body for debugging, the sealing rings arranged at the mounting holes and the sealing rings arranged between the operation panel and the opening ensure that the interior of the box body is in a closed space, so that the inflation holes can inflate the gas to increase the internal pressure of the box body, and the explosion-proof device is arranged to control the internal pressure within a certain safe range. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, and the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative and laborious work. Among them:

[0016] Figure 1 It is a schematic diagram of the overall structure of a highland type circuit breaker;

[0017] Figure 2 It is a disassembly schematic diagram of a highland type circuit breaker;

[0018] Figure 3 It is a partial disassembly schematic diagram of a highland type circuit breaker;

[0019] Figure 4 It is a partial structure schematic diagram of a highland type circuit breaker.

[0020] Meaning of reference signs in the figure: 1, box; 101, mounting hole; 2, bottom plate; 3, insulating pull rod; 4, operating mechanism; 5, operating panel; 6, incoming and outgoing line terminal; 7, inflation structure; 701, inflation hole; 702, sealing cover; 8, protective plate; 9, explosion-proof device. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0022] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific details set forth herein, and the present application is not limited to the described implementations. As used in this description, the term "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described is included in at least one implementation of the present application. The appearance of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all referring to a single, special implementation of the present application. EMBODIMENT

[0023] REFERENCE Figures 1-4 For the specific embodiment of the present application, the embodiment provides a highland type circuit breaker, which comprises a box 1, the box 1 is provided with an opening on one side, the box 1 is provided with a bottom plate 2 inside, the bottom plate 2 can be pulled out from the opening, a plurality of circuit breaking structures for isolating circuits are installed on the bottom plate 2, incoming and outgoing line terminals 6 for forming a conductive loop and located on both sides of the box 1 are symmetrically connected on both sides of each circuit breaking structure, and the side of the box 1 with the opening is connected with an operating panel 5; the incoming and outgoing line terminals 6 are connected with the circuit breaking structures inside the box 1 through mounting holes 101; an operating mechanism 4 for opening and closing energy storage is installed on one side of the bottom plate 2, and the operating mechanism 4 is controlled through the operating panel 5.

[0024] The incoming and outgoing line terminals 6 on both sides of the circuit breaking structure are used to form a conductive loop, each mounting hole 101 is provided with a rubber sealing ring for sealing the gap between the incoming and outgoing line terminals 6 and the box 1, the connection between the operating panel 5 and the box 1 is also provided with a rubber sealing ring, and the outer surface of the operating panel 5 is provided with a plurality of switches connected with the operating mechanism 4 for indicating the working state of the equipment.

[0025] The box 1 is provided with an inflation structure 7 on one side, the inflation structure 7 comprises an inflation hole 701, and the inflation hole 701 is provided with a sealing cover 702; the box 1 is provided with an explosion-proof device 9 for controlling the air pressure inside the box 1 on one side, and the explosion-proof device 9 is provided with a protective plate 8.

[0026] The inflation hole 701 is a circular hole, and the air pressure in the box 1 is controlled by the air pressure valve on the explosion-proof device 9. When the air pressure exceeds a certain threshold, the explosion-proof device 9 releases part of the gas for pressure relief. In the plateau environment, SF6 gas is filled in the box 1 to increase the insulation effect. When the box 1 is slightly extruded and deformed in the harsh weather environment, the internal transmission components can be protected to a certain extent through the action of the internal gas, and the normal operation of the equipment can be maintained.

[0027] Each circuit breaking structure includes an insulation box, and the insulation box is provided with insulation pull rods 3, one end of each insulation pull rod 3 is sleeved with a contact spring, and the insulation pull rods 3 are connected through a transmission main shaft; the insulation box further includes a vacuum arc-extinguishing chamber capable of rapidly opening and closing a conductive loop, and the vacuum arc-extinguishing chamber is controlled through the insulation pull rods 3; a current transformer is arranged on one side of each insulation box; the number of the circuit breaking structures is three, and the circuit breaking structures are uniformly arranged along the moving direction of the bottom plate 2.

[0028] The bottom plate 2 is pulled out, and the debugging of the mechanical parameters of the switch is completed on the bottom plate 2. After debugging, the bottom plate 2 is pushed into the box 1. The insulation box and the insulation pull rod 3 are made of insulation materials such as plastic, rubber and ceramic, so as to prevent high-voltage electricity from being conducted to the switch shell. When an arc is generated in the opening process, the high insulation performance of the vacuum arc-extinguishing chamber makes it difficult to maintain combustion, so the arc is quickly extinguished. The current transformer mainly consists of a core, a primary winding and a secondary winding. The core is usually made of high-permeability materials such as silicon steel sheets to improve the magnetic flux and conversion efficiency.

[0029] Working principle: first, when the equipment needs to be debugged, the bolts at the connection between the operation panel 5 and the box 1 are unscrewed, the operation panel 5 is removed, and then the inlet and outlet line terminals 6 are sequentially removed. Then, the bottom plate 2 is pulled out of the box 1, and the equipment is debugged. After debugging, the bottom plate 2 is reset, the inlet and outlet line terminals 6 and the operation panel 5 are sequentially installed, and the equipment debugging is tested again. If further debugging is required, the above operation is repeated. After meeting the requirements, the sealing cover 702 is opened, the gas with increased insulation is filled into the box 1 through the inflation hole 701, and then the sealing cover 702 is sealed, thereby completing the installation and debugging of the equipment.

[0030] The beneficial effects of the present application relative to the prior art are as follows: the inlet and outlet line terminals 6 and the circuit breaking structure are connected by bolts, which are convenient to disassemble. The bottom plate 2 is arranged to facilitate the extraction of the internal equipment from the box 1 for debugging. The sealing ring arranged at the mounting hole 101 and the sealing ring arranged at the opening of the operation panel 5 ensure that the interior of the box 1 is in a closed space, so that the inflation hole 701 can fill the gas to increase the internal pressure of the box 1. The explosion-proof device 9 is arranged to control the internal pressure within a certain safe range.

[0031] It is important to note that while only a few embodiments have been described herein, persons having ordinary skill in the art will readily devise many modifications of the embodiments disclosed without departing from the scope of the application. For example, the elements of the embodiments can be repositioned or otherwise changed in configuration. Accordingly, all such modifications are intended to be included within the scope of the present application. The use of the terms "act," "acting," "actuation," and "actuated" in the claims should not be construed as exclusively referring to the singular, but rather to encompassing the plural, unless the context clearly dictates otherwise. Such terms should be construed to cover a variety of structures, acts, and / or devices that can be configured to perform the recited function, even if such structures, acts, and / or devices are not explicitly described in the specification.

Claims

1. A plateau type circuit breaker, characterized in that: The invention comprises a box body (1), wherein one side of the box body (1) is provided with an opening, a bottom plate (2) is provided in the box body (1), and the bottom plate (2) can be pulled outward from the opening, and a plurality of circuit-isolating structures for isolating circuits are installed on the bottom plate (2), and each of the circuit-isolating structures is symmetrically connected to input and output terminals (6) for forming a conductive loop and located on both sides of the box body (1), and the side of the box body (1) with the opening is connected to an operation panel (5).

2. The plateau type circuit breaker according to claim 1, wherein: The input and output terminals (6) are connected to the circuit breaker structure inside the box (1) via the mounting holes (101).

3. The plateau type circuit breaker according to claim 2, wherein: An operating mechanism (4) for opening and closing the switch and storing energy is installed on one side of the base plate (2), and the operating mechanism (4) is controlled by an operating panel (5).

4. The plateau type circuit breaker according to claim 3, wherein: An inflatable structure (7) is provided on one side of the box body (1), the inflatable structure (7) comprising an inflatable hole (701), and a sealing cover (702) is provided on the inflatable hole (701).

5. The plateau type circuit breaker according to claim 4, characterized in that: An explosion-proof device (9) for controlling the air pressure in the box (1) is provided on one side of the box (1), and a protective plate (8) is provided on the explosion-proof device (9).

6. The plateau type circuit breaker according to claim 1 or 5, characterized in that: Each of the circuit breaker structures comprises an insulating box, an insulating pull rod (3) is provided in the insulating box, one end of the insulating pull rod (3) is sleeved with a contact spring, and a plurality of the insulating pull rods (3) are connected via a transmission main shaft.

7. The plateau type circuit breaker according to claim 6, characterized in that: The insulating box also includes a vacuum interrupter capable of rapidly opening and closing a conductive circuit, and the vacuum interrupter is controlled by an insulating pull rod (3).

8. The plateau type circuit breaker according to claim 7, wherein: One side of each of the plurality of insulating boxes is provided with a current transformer.

9. The plateau type circuit breaker according to claim 8, characterized in that: There are three disconnect structures, which are evenly arranged along the moving direction of the bottom plate (2).

Images