CN219575542U - Circuit breaker with arc extinguishing net cover - Google Patents

Abstract

The utility model provides a circuit breaker with an arc-extinguishing net cover, which comprises a shell, wherein an arc-extinguishing chamber used for arc extinction is arranged in the shell, the arc-extinguishing net cover is arranged on the shell, the arc-extinguishing net cover is positioned on one side of an arc-extinguishing chamber arc discharge port, a plurality of mounting cavities are arranged in the arc-extinguishing net cover, an arc-extinguishing net used for absorbing residual arc discharged from the arc-extinguishing chamber arc discharge port is arranged in each mounting cavity, the arc-extinguishing net in the arc-extinguishing net cover can further absorb arc-extinguishing arcs generated in the circuit breaker, the arc-extinguishing net can prevent the arc-extinguishing arcs from damaging a circuit and power supply equipment, the horizontal cross section of the arc-extinguishing net is arranged in a V shape, so that the arc-extinguishing net is beneficial to the rapid flow of gas, the arc-extinguishing net can be rapidly introduced into the arc-extinguishing net, the contact area between the arc-extinguishing net and the arc-extinguishing arc can be increased, and the arc-extinguishing effect is improved.

Description

Circuit breaker with arc extinguishing net cover

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker with an arc extinguishing net cover.

Background

The plastic shell circuit breaker is also called a device type circuit breaker, all parts of the plastic shell circuit breaker are sealed in the plastic shell, and the auxiliary contacts, the shunt tripping device and the like are in a spliced modular design, so that the plastic shell circuit breaker can be conveniently installed and maintained.

The arc extinguishing structures of the molded case circuit breaker are all arc-absorbing and extinguishing by adopting the arc extinguishing chambers and the arc isolating sheets, the arc extinguishing structures can only eliminate most of flashovers, and a small part of flashovers can be discharged outside the case, so that the flashovers are easy to cause harm to circuits and power supply equipment.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect that the arc extinguishing structure in the circuit breaker in the prior art cannot completely eliminate the flashover, which causes damage to the circuit and the power supply equipment, so as to provide the circuit breaker with the arc extinguishing net cover, which can further eliminate the flashover.

The utility model provides a circuit breaker with an arc extinguishing net cover, which comprises a shell, wherein an arc extinguishing chamber used for arc extinction is arranged in the shell, the arc extinguishing net cover is arranged on the shell, the arc extinguishing net cover is positioned on one side of an arc discharging port of the arc extinguishing chamber, a plurality of mounting cavities are arranged in the arc extinguishing net cover, an arc extinguishing net used for absorbing residual arc discharged from the arc discharging port of the arc extinguishing chamber is arranged in the mounting cavities, and the horizontal cross section of the arc extinguishing net is in a V-shaped arrangement.

The arc extinguishing net comprises a connecting part and inclined parts arranged on two sides of the connecting part, and a positioning groove for the inclined parts to be inserted is arranged at the top of the installation cavity.

The arc-extinguishing net is arranged on the arc-extinguishing net cover through an inserting structure.

The inserting structure comprises two inserting grooves and a connecting inserting block, the two inserting grooves are arranged on the inner walls of the two sides of the mounting cavity, and the inserting grooves extend along the vertical direction; the two inserting blocks are respectively arranged on the two inclined parts and can be connected with the slots in an adaptive manner.

The side of the insertion block is provided with a plurality of elastic protruding blocks, the elastic protruding blocks are arranged at intervals along the vertical direction, and the elastic protruding blocks can be propped against the inner wall of the insertion groove.

The V-shaped opening of the arc-extinguishing net is arranged towards the direction of the arc-extinguishing chamber.

The arc extinguishing net cover is far away from be equipped with a plurality of rectangular holes that are used for ventilative on one side of casing, rectangular hole extends along the horizontal direction, rectangular hole sets up along vertical direction interval.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a circuit breaker with an arc-extinguishing net cover, which comprises a shell, wherein an arc-extinguishing chamber used for arc extinction is arranged in the shell, the arc-extinguishing net cover is arranged on the shell, the arc-extinguishing net cover is positioned on one side of an arc-extinguishing chamber arc discharge port, a plurality of installation cavities are arranged in the arc-extinguishing net cover, an arc-extinguishing net used for absorbing residual arc discharged from the arc-extinguishing chamber arc discharge port is arranged in the installation cavities, the arc-extinguishing net in the arc-extinguishing net cover can further absorb arc-extinguishing generated in the circuit breaker, the arc-extinguishing net can prevent the arc from damaging a circuit and power supply equipment, the horizontal cross section of the arc-extinguishing net is in a V-shaped arrangement, so that the arrangement is favorable for gas to flow fast, the arc-extinguishing net can be introduced fast, the contact area between the arc-extinguishing net and the arc-extinguishing net can be increased, and the arc-extinguishing effect is improved.

2. The utility model provides a circuit breaker with an arc extinguishing net cover, wherein an inserting structure comprises two inserting grooves and a connecting inserting block, wherein the two inserting grooves are arranged on the inner walls of two sides of an installation cavity, and extend along the vertical direction; the two inserting blocks are arranged on the two inclined parts respectively and can be connected with the slots in an adaptive manner, and the inserting structure is convenient for the arc extinguishing net to be installed in the installation cavity, so that the assembly is faster and more convenient.

3. According to the circuit breaker with the arc-extinguishing net cover, the plurality of elastic protruding blocks are arranged on the side face of the inserting block, the elastic protruding blocks are arranged at intervals along the vertical direction, and can be abutted against the inner wall of the slot, so that the inserting block can be prevented from being separated from the slot along the vertical direction, and the arc-extinguishing net cover are assembled more firmly.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a circuit breaker having an arc chute according to the present utility model;

FIG. 2 is a perspective view of FIG. 1 with the housing removed;

FIG. 3 is a cross-sectional view of FIG. 2;

fig. 4 is a schematic structural view of the arc extinguishing net cover;

fig. 5 is a perspective view of the arc extinguishing net.

Reference numerals illustrate: 1. a housing; 2. arc extinguishing net cover; 21. a mounting cavity; 22. a positioning groove; 23. a slot; 24. a slit hole; 3. an arc extinguishing net; 31. a connection part; 32. an inclined portion; 33. inserting blocks; 34. elastic protruding blocks.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Examples

The present embodiment provides a circuit breaker with an arc chute, as shown in fig. 1 and 2, including a case 1, an arc chute 2, and an arc chute 3.

The shell 1, as shown in fig. 1-4, is equipped with the explosion chamber that is used for the arc extinction in its inside, install explosion screen panel 2 on the shell 1, explosion screen panel 2 is located explosion chamber lets out one side of arc mouth, have a plurality of installation cavity 21 in the explosion screen panel 2, be equipped with in the installation cavity 21 follow explosion chamber lets out arc mouth exhaust surplus arc and carries out the arc extinguishing screen 3 of arc suction, the top of installation cavity 21 is equipped with constant head tank 22, be equipped with two slots 23 on the inner wall of installation cavity 21 both sides, slot 23 extends along vertical direction, explosion screen panel 2 is kept away from be equipped with a plurality of rectangular holes 24 that are used for breathing freely on the one side of shell 1, rectangular hole 24 extends along the horizontal direction, rectangular hole 24 sets up along vertical direction interval.

The arc-extinguishing net, as shown in fig. 2, 3 and 5, the horizontal cross section of the arc-extinguishing net is V-shaped, the arc-extinguishing net 3 comprises a connecting part 31 and inclined parts 32 arranged on two sides of the connecting part 31, two inclined parts 32 are provided with inserting blocks 33 which can be connected with the slots 23 in an adapting way, the side surfaces of the inserting blocks 33 are provided with a plurality of elastic protruding blocks 34, the elastic protruding blocks 34 are arranged at intervals along the vertical direction, the elastic protruding blocks 34 can abut against the inner wall of the slots 23, and the V-shaped opening of the arc-extinguishing net 3 is arranged towards the direction of the arc-extinguishing chamber.

The utility model provides a circuit breaker with an arc-extinguishing net cover, which comprises a shell 1, wherein an arc-extinguishing chamber used for arc extinction is arranged in the shell 1, an arc-extinguishing net cover 2 is arranged on the shell 1, the arc-extinguishing net cover 2 is positioned on one side of an arc-extinguishing chamber arc discharge port, a plurality of installation cavities 21 are arranged in the arc-extinguishing net cover 2, an arc-extinguishing net 3 used for absorbing residual arc discharged from the arc-extinguishing chamber arc discharge port is arranged in the installation cavities 21, the arc-extinguishing net 3 in the arc-extinguishing net cover 2 can further absorb arc-extinguishing arcs generated in the circuit breaker, the arc-extinguishing net 3 is prevented from damaging a circuit and power equipment, and the horizontal cross section of the arc-extinguishing net 3 is arranged in a V shape, so that the arrangement is beneficial to gas flowing fast, the arc-extinguishing net 3 can be introduced fast, the contact area between the arc-extinguishing net 3 and the arc-extinguishing effect can be increased.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (7)

1. The utility model provides a circuit breaker with arc extinguishing screen panel, its characterized in that, including casing (1), its inside explosion chamber that is used for the arc extinction that is equipped with, install arc extinguishing screen panel (2) on casing (1), arc extinguishing screen panel (2) are located one side of arc extinguishing chamber arc discharge port, have a plurality of installation cavity (21) in arc extinguishing screen panel (2), be equipped with in installation cavity (21) to follow arc extinguishing screen panel (3) that arc discharge port exhaust surplus flashover carried out the arc absorption, the horizontal cross section of arc extinguishing screen panel (3) personally submits the V type setting.

2. The circuit breaker with the arc extinguishing net cover according to claim 1, characterized in that the arc extinguishing net (3) comprises a connecting part (31) and inclined parts (32) arranged at two sides of the connecting part (31), and a positioning groove (22) into which the inclined parts (32) can be inserted is arranged at the top of the mounting cavity (21).

3. Circuit breaker with an arc chute according to claim 2, characterized in that the arc chute (3) is mounted on the arc chute (2) by means of a plug-in structure.

4. The circuit breaker with arc chute as in claim 3 wherein the plug structure comprises:

the two slots (23) are arranged on the inner walls of the two sides of the mounting cavity (21), and the slots (23) extend along the vertical direction;

the two inserting blocks (33) are respectively arranged on the two inclined parts (32) and can be connected with the slots (23) in an adaptive manner.

5. The circuit breaker with the arc extinguishing net cover according to claim 4, wherein a plurality of elastic protruding blocks (34) are arranged on the side face of the insertion block (33), the elastic protruding blocks (34) are arranged at intervals along the vertical direction, and the elastic protruding blocks (34) can be abutted against the inner wall of the slot (23).

6. Circuit breaker with an arc chute according to claim 1, characterized in that the V-shaped opening of the arc chute (3) is arranged in the direction of the arc chute.

7. The circuit breaker with the arc extinguishing net cover according to claim 1, wherein a plurality of strip holes (24) for ventilation are arranged on one side of the arc extinguishing net cover (2) away from the shell (1), the strip holes (24) extend along the horizontal direction, and the strip holes (24) are arranged at intervals along the vertical direction.