CN220382034U

CN220382034U - Arc extinguishing chamber structure

Info

Publication number: CN220382034U
Application number: CN202321668688.1U
Authority: CN
Inventors: 赵坤; 刘艳辉; 王炎昭; 赵智勇; 魏武文
Original assignee: Chusul Electric Co ltd
Current assignee: Chusul Electric Co ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2024-01-23
Anticipated expiration: 2033-06-29

Abstract

The utility model relates to an arc extinguishing chamber structure which is characterized by comprising a first side wall and a second side wall which form an arc extinguishing area, wherein cover plates are arranged at the end parts of the first side wall and the second side wall, exhaust holes are formed in the cover plates, and the exhaust area of the exhaust holes is gradually increased from a high-voltage area to a low-voltage area. The exhaust holes are arranged in different sizes, and the exhaust area is gradually increased from the high-voltage area to the low-voltage area, so that when the electric arc in the high-voltage area is blown to the low-voltage area, the electric arc in the low-voltage area can be ensured to be rapidly subjected to arc extinction and exhaust, and the arc extinction and exhaust effect is improved.

Description

Arc extinguishing chamber structure

Technical Field

The utility model relates to the technical field of arc-extinguishing chambers of circuit breakers, in particular to an arc-extinguishing chamber structure.

Background

The arc extinguishing chamber is provided for extinguishing an arc. According to the short arc extinction principle, an extinction chamber of an extinction grid sheet made of a thin steel plate is arranged above a contact, when the contact breaks a circuit, particularly when short circuit current is broken, arc current is generated between the contacts, the arc enters the extinction grid sheet under the driving of electrodynamic force and gas effect, the extinction grid sheet divides an arc into a plurality of series short arcs, the arc voltage is larger than the broken voltage and is difficult to maintain under the action of a near cathode effect, and meanwhile, the extinction grid sheet absorbs arc heat, so that the arc is rapidly cooled and extinguished.

The arc extinguishing chamber can form a high-voltage area and a low-voltage area, and an electric arc in the high-voltage area can be blown to the low-voltage area, so that the electric arc in the low-voltage area is more during arc extinguishing, and the existing exhaust holes are holes with the same size, so that the low-voltage area cannot be subjected to timely arc extinguishing and exhausting, and the arc extinguishing chamber capable of avoiding the occurrence of the conditions is needed to be designed.

Disclosure of Invention

The utility model aims to provide an arc extinguishing chamber structure so as to solve the technical problems.

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

the utility model provides an explosion chamber structure, its characterized in that includes the lateral wall I and the lateral wall II that constitute the arc extinguishing area, the tip of lateral wall I and lateral wall II is provided with the apron, be provided with the exhaust hole on the apron, the exhaust area of exhaust hole increases gradually from high-pressure region to low-pressure region.

The utility model further provides that an arc-extinguishing grid is arranged in the arc-extinguishing area, a woven mesh, an insulating plate and a baffle are arranged between the arc-extinguishing grid and the cover plate, the baffle is fixed on the insulating plate, the woven mesh is positioned between the baffle and the cover plate, and the insulating plate is abutted against the arc-extinguishing grid.

The utility model further provides that the first side wall and the second side wall are provided with clamping grooves, and two ends of the arc extinguishing grid are clamped in the clamping grooves.

The utility model further provides that the woven mesh covers the exhaust hole.

The utility model further provides that the exhaust hole is a rectangular hole.

The utility model has the beneficial effects that: the exhaust holes are arranged in different sizes, and the exhaust area is gradually increased from the high-voltage area to the low-voltage area, so that when the electric arc in the high-voltage area is blown to the low-voltage area, the electric arc in the low-voltage area can be ensured to be rapidly subjected to arc extinction and exhaust, and the arc extinction and exhaust effect is improved.

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 perspective view of an embodiment of the present utility model.

Fig. 2 is an exploded view of an embodiment of the present utility model.

Reference numerals:

10. a first side wall; 20. a second side wall; 30. a cover plate; 301. an exhaust hole; 40. arc extinguishing grids; 50. a woven mesh; 60. a main insulating plate; 70. a baffle; 80. an insulating frame; 90. a clamping groove; 100. a limiting plate;

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. 1-2, the present utility model is an arc extinguishing chamber structure, which comprises a first side wall 10 and a second side wall 20 that form an arc extinguishing area, wherein end portions of the first side wall 10 and the second side wall 20 are provided with a cover plate 30, the cover plate 30 is provided with an exhaust hole 301, and an exhaust area of the exhaust hole 301 gradually increases from a high voltage area to a low voltage area.

The arc extinguishing area is internally provided with an arc extinguishing grid 40, a woven mesh 50, an insulating plate and a baffle 70 are arranged between the arc extinguishing grid 40 and the cover plate 30, the baffle 70 is fixed on the insulating plate, the woven mesh 50 is positioned between the baffle 70 and the cover plate 30, the insulating plate abuts against the arc extinguishing grid 40, and the insulating plate comprises a main insulating plate 60 with air outlets and insulating frames 80 arranged on two sides of the main insulating plate 60.

The first side wall 10 and the second side wall 20 are provided with a clamping groove 90, and the clamping groove 90 is formed by a limiting plate 100 with a certain distance, and the distance is the width of the clamping groove 90. Both ends of the arc extinguishing grid 40 are clamped in the clamping grooves 90.

Wherein the mesh covers the vent 301.

Wherein the vent 301 is a rectangular hole.

The exhaust holes 301 are set to different sizes, and the exhaust area is gradually increased from the high voltage area to the low voltage area, so that when the electric arc in the high voltage area is blown to the low voltage area, the electric arc in the low voltage area can be ensured to be rapidly extinguished and exhausted, and the arc extinguishing and exhausting effect is improved.

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

1. The utility model provides an explosion chamber structure, its characterized in that includes the lateral wall I and the lateral wall II that constitute the arc extinguishing area, the tip of lateral wall I and lateral wall II is provided with the apron, be provided with the exhaust hole on the apron, the exhaust area of exhaust hole increases gradually from high-pressure region to low-pressure region.

2. The arc extinguishing chamber structure according to claim 1, wherein an arc extinguishing grid is arranged in the arc extinguishing area, a woven mesh, an insulating plate and a baffle are arranged between the arc extinguishing grid and the cover plate, the baffle is fixed on the insulating plate, the woven mesh is positioned between the baffle and the cover plate, and the insulating plate abuts against the arc extinguishing grid.

3. The arc extinguishing chamber structure according to claim 2, wherein the first side wall and the second side wall are provided with clamping grooves, and two ends of the arc extinguishing grid are clamped in the clamping grooves.

4. An arc chute structure according to claim 2 wherein said mesh-like cover covers said vent.

5. An arc chute structure according to claim 3 wherein said vent is a rectangular aperture.