CN220731403U - Novel vacuum circuit breaker - Google Patents

Abstract

The utility model relates to a novel vacuum circuit breaker, which comprises an insulating sleeve, wherein a vacuum arc-extinguishing chamber is arranged in the insulating sleeve, the vacuum arc-extinguishing chamber comprises an arc-extinguishing chamber shell, a movable conducting rod, a static conducting rod and a movable contact are arranged in the shell, the end part of the movable contact is provided with a contact part, the end part of the static contact is provided with a concave part, when the movable contact is contacted with the static contact, the contact part is positioned in the concave part, the inner wall surface of the concave part is an arc surface, the concave part is of a structure with a wide upper part and a narrow lower part, a plurality of arc guide holes are formed in the static contact, one end of each arc guide hole is positioned on the arc surface, and the arc generated when the static contact and the movable contact are disconnected is led out of the static contact through the arc guide holes. According to the utility model, the contact part is formed at the end part of the moving contact and the concave part is formed at the end part of the static contact, wherein the concave part is of a structure with a narrow upper part and a wide lower part, and an inclined arc surface is arranged in the concave part, so that the contact part can enter the concave part to realize contact conduction, and a good guiding effect is achieved.

Description

Novel vacuum circuit breaker

Technical Field

The utility model relates to the technical field of vacuum circuit breakers, in particular to a novel vacuum circuit breaker.

Background

Along with the development of economy, the vacuum circuit breaker gradually replaces the sulfur hexafluoride circuit breaker with the characteristics of environmental friendliness, long service life, no maintenance and the like, and becomes a research hot spot at home and abroad. The vacuum interrupter is generally all set up in insulating sleeve, and current vacuum interrupter is generally all set up single contact structure when using, and single contact structure is poor in direction effect when moving contact and stationary contact, appears the position deviation easily, especially after many times divide-shut brake.

Disclosure of Invention

The utility model aims to provide a novel vacuum circuit breaker so as to solve the technical scheme.

In order to achieve the above purpose, the utility model provides the following technical scheme,

the utility model provides a novel vacuum circuit breaker, its characterized in that, including the circuit breaker body, be formed with insulating sleeve on the circuit breaker body, be provided with vacuum interrupter in the insulating sleeve, vacuum interrupter includes the explosion chamber shell, be provided with movable conductive rod, quiet conductive rod in the shell, movable conductive rod with the tip of quiet conductive rod is provided with moving contact and static contact, the tip of moving contact is provided with contact, the tip of static contact is provided with the depressed part, when moving contact and static contact, contact is located in the depressed part, the internal face of depressed part is the arcwall face, and the depressed part is wide structure down, still be formed with a plurality of arc guide holes on the static contact, the one end of arc guide hole is located the arcwall face, and on the surface of other one end static contact, through the arc guide hole, will the arc that produces when static contact and moving contact break outside the static contact.

The utility model further provides that the end face of the movable contact, which is close to one side of the movable conducting rod, is provided with a plurality of magnetic pole pieces, the magnetic pole pieces are stacked on the movable contact in a staggered mode, each magnetic pole piece is of an annular structure with an opening, two adjacent magnetic pole pieces are partially overlapped, and the openings face towards the movable conducting rod.

The utility model further provides that a placement groove is formed in the contact part of the moving contact, and a temperature equalizing plate is arranged in the placement groove for heat dissipation.

The utility model further provides that the two ends of the arc extinguishing chamber shell are provided with guide rings.

The utility model further provides that the movable conducting rod is provided with the shaft sleeve, and a spring is arranged between the end part of the shaft sleeve and the guide ring positioned at one side of the movable conducting rod.

The utility model has the beneficial effects that: according to the utility model, the contact part is formed at the end part of the moving contact and the concave part is formed at the end part of the static contact, wherein the concave part forms a structure with a narrow upper part and a wide lower part, and an inclined arc surface is arranged in the concave part, so that the contact part can enter the concave part to realize contact conduction, and a good guiding effect is achieved; secondly, forming an arc guide hole on the fixed contact to guide out the electric arc, and having a certain heat dissipation effect; the service life of the static contact is prolonged; the magnetic pole pieces are arranged to attract the electric arc, so that a longitudinal magnetic field is formed, the arcing effect is improved, and the arc extinguishing effect is improved. And the contact part of the moving contact is radiated by arranging the temperature equalizing plate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of an embodiment of the present utility model.

Fig. 3 is a schematic view of a structure with an arc extinguishing chamber housing removed according to an embodiment of the present utility model.

Fig. 4 is a top view of an embodiment of the present utility model.

Fig. 5 is a perspective view of a pole piece according to an embodiment of the present utility model.

The reference numerals are given to the figures,

10. a circuit breaker body; 20. an insulating sleeve; 30. a vacuum arc extinguishing chamber; 40. an arc extinguishing chamber housing; 50. a movable conductive rod; 60. a static conductive rod; 70. a stationary contact; 701. a recessed portion; 702. an arc guiding hole; 80. a moving contact; 801. a contact portion; 90. a pole piece; 901. an opening; 100. a placement groove; 110. a temperature equalizing plate; 120. a guide ring; 130. a shaft sleeve; 140. a spring;

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings and examples, so that the implementation process of how the technical means are applied to solve the technical problems and achieve the technical effects of the present application can be fully understood and implemented accordingly.

As shown in fig. 1-5, the utility model is a novel vacuum circuit breaker, which comprises a circuit breaker body 10, an insulating sleeve 20 is formed on the circuit breaker body 10, a vacuum arc extinguishing chamber 30 is arranged in the insulating sleeve 20, the vacuum arc extinguishing chamber 30 comprises an arc extinguishing chamber shell 40, a movable conducting rod 50 and a static conducting rod 60 are arranged in the shell, a movable contact 80 and a static contact 70 are arranged at the ends of the movable conducting rod 50 and the static conducting rod 60, a contact part 801 is arranged at the ends of the movable contact 80, a concave part 701 is arranged at the ends of the static contact 70, when the movable contact 80 is in contact with the static contact 70, the contact part 801 is positioned in the concave part 701, the inner wall surface of the concave part 701 is an arc-shaped surface, the concave part 701 is of an upper wide and lower narrow structure, a plurality of conducting holes 702 are also formed in the static contact 70, one ends of the conducting holes 702 are positioned on the arc-shaped surface, and in addition, the outer surfaces of the static contact 70 are provided with a plurality of conducting holes 702, and the static contact 70 are separated from the movable contact 70.

The movable contact 80 is provided with a plurality of magnetic pole pieces 90 on the end face close to one side of the movable conducting rod 50, the magnetic pole pieces 90 are stacked on the movable contact 80 in a staggered mode, each magnetic pole piece 90 is of an annular structure with an opening 901, two adjacent magnetic pole pieces 90 are partially overlapped, and the openings 901 face towards the movable conducting rod 50.

A mounting groove 100 is formed in the contact portion 801 of the moving contact 80, and a temperature equalizing plate 110 is disposed in the mounting groove 100 for heat dissipation.

The arc chute housing 40 is provided at both ends with guide rings 120. The movable conductive rod 50 is provided with a shaft sleeve 130, and a spring 140 is arranged between the end of the shaft sleeve 130 and the guide ring 120 positioned on one side of the movable conductive rod 50.

In the utility model, a contact part 801 is formed at the end part of a moving contact 80 and a concave part 701 is formed at the end part of a fixed contact 70, wherein the concave part 701 forms a structure with a narrow upper part and a wide lower part, and an inclined arc surface is arranged in the concave part to ensure that the contact part 801 enters the concave part 701 to realize contact conduction, so that the guide effect is good; secondly, arc guide holes 702 are formed on the fixed contact 70, so that an arc is guided out, and a certain heat dissipation effect is achieved; the service life of the fixed contact 70 is prolonged; by arranging the magnetic pole pieces 90 to attract the arc, a longitudinal magnetic field is formed, the arcing effect is improved, and the arc extinguishing effect is improved. The contact portion 801 of the moving contact 80 is radiated by providing the temperature equalizing plate 110.

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (5)

1. The utility model provides a novel vacuum circuit breaker, its characterized in that, including the circuit breaker body, be formed with insulating sleeve on the circuit breaker body, be provided with vacuum interrupter in the insulating sleeve, vacuum interrupter includes the explosion chamber shell, be provided with movable conductive rod, quiet conductive rod in the shell, movable conductive rod with the tip of quiet conductive rod is provided with moving contact and static contact, the tip of moving contact is provided with contact, the tip of static contact is provided with the depressed part, when moving contact and static contact, contact is located in the depressed part, the internal face of depressed part is the arcwall face, and the depressed part is wide structure down, still be formed with a plurality of arc guide holes on the static contact, the one end of arc guide hole is located the arcwall face, and on the surface of other one end static contact, through the arc guide hole, will the arc that produces when static contact and moving contact break outside the static contact.

2. The novel vacuum circuit breaker according to claim 1, wherein a plurality of magnetic pole pieces are arranged on the end face of the movable contact close to one side of the movable conducting rod, the magnetic pole pieces are stacked on the movable contact in a staggered mode, each magnetic pole piece is of an annular structure with an opening, two adjacent magnetic pole pieces are partially overlapped, and the opening faces towards the movable conducting rod.

3. The novel vacuum circuit breaker according to claim 1, wherein a placement groove is formed in the contact portion of the moving contact, and a temperature equalizing plate is arranged in the placement groove for heat dissipation.

4. The novel vacuum circuit breaker according to claim 1, wherein guide rings are provided at both ends of the arc extinguishing chamber housing.

5. The novel vacuum circuit breaker according to claim 4, wherein the movable conductive rod is provided with a shaft sleeve, and a spring is arranged between the end of the shaft sleeve and a guide ring positioned at one side of the movable conductive rod.