CN216928380U

CN216928380U - Frame circuit breaker and shell thereof

Info

Publication number: CN216928380U
Application number: CN202220591279.5U
Authority: CN
Inventors: 寻春; 熊丽; 何亚伟; 张俊
Original assignee: Delixi Electric Co Ltd
Current assignee: Delixi Electric Co Ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-07-08
Anticipated expiration: 2032-03-17

Abstract

The application relates to a frame circuit breaker and a shell of the frame circuit breaker, wherein the frame circuit breaker comprises a breaker body and a shell, the breaker body is provided with an arc extinguish chamber, and the shell is installed above the arc extinguish chamber. The shell comprises a cover body, an insulating layer and at least one metal layer; the cover body is equipped with the installing zone, and metal level and insulating layer set firmly in the inside wall of installing zone, and the metal level is located between installing zone and the insulating layer, and the installing zone is equipped with a plurality of first bleeder vents, and the insulating layer is equipped with a plurality of second bleeder vents, and the metal level is equipped with a plurality of through-holes. When the frame circuit breaker is disconnected, the shell can prevent metal particles from being discharged out of the circuit breaker, and plays a buffering role on high-temperature gas generated during breaking, so that the influence on other equipment or a main loop in a power distribution cabinet when the circuit breaker is disconnected is avoided.

Description

Frame circuit breaker and shell thereof

Technical Field

The application relates to the technical field of circuit breaker equipment, in particular to a frame circuit breaker and a shell of the frame circuit breaker.

Background

The frame circuit breaker is a common electrical appliance applied to a low-voltage distribution system, and is used for distributing electric energy and protecting a switching electrical appliance of an electric power system and electric power equipment.

The frame circuit breaker can generate electric arc in the breaking process, the electric arc can be led into the arc extinguishing chamber as soon as possible in order to extinguish the electric arc, and metal particles and high-temperature gas can be discharged out of the arc extinguishing chamber in the arc extinguishing chamber arc breaking process. When the frame circuit breaker is disconnected, high-temperature gas is exhausted or metal particles fly out, and certain influence on other equipment in the power distribution cabinet or even a main loop can be caused.

At present, with the continuous development of new energy technology, circuit breakers with more than 1000V of alternating current, direct current circuit breakers and the like are popularized; under the environment of alternating current 1000V and the environment of direct current, the influence of the frame breaker breaking on the outside of the arc extinguishing chamber is large. Therefore, when the frame circuit breaker is opened, how to avoid or reduce the discharge of metal particles to the outside of the circuit breaker and reduce the influence on other equipment or a main loop in the power distribution cabinet is a technical problem to be solved by a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a frame circuit breaker and frame circuit breaker's casing, frame circuit breaker when the disconnection, this casing can block outside the metallic particle discharge circuit breaker to high-temperature gas that produces when breaking plays cushioning effect, causes the influence to other equipment or major loop in the switch board when avoiding the circuit breaker to break off.

In order to solve the technical problem, the application provides a housing of a frame circuit breaker, which is arranged above an arc extinguish chamber of the frame circuit breaker, wherein the housing comprises a cover body, an insulating layer and at least one metal layer; the cover body is equipped with the installing zone, the metal level with the insulating layer set firmly in the inside wall of installing zone, just the metal level is located the installing zone with between the insulating layer, the installing zone is equipped with a plurality of first bleeder vents, the insulating layer is equipped with a plurality of second bleeder vents, the metal level is equipped with a plurality of through-holes.

The insulating layer is provided with the bleeder vent, and metal particle is when reaching this casing, and partial metal particle can be blockked by the insulating layer, and partial metal particle can pass the bleeder vent of insulating layer and reach the metal level to adsorb in the metal level, thereby block the quantity that metal particle passed the casing departure, and reduce because the influence that the metal particle departure led to the fact other equipment or major loop in the outside switch board.

High-temperature gas sequentially passes through the air holes of the insulating layer, the through holes of the metal layer and the air holes of the cover body from inside to outside and is discharged, and in the process, due to the blocking of the insulating layer, the metal layer and the cover body, the high-temperature gas flow can be buffered, so that the influence of the high-temperature gas directly rushing out to other equipment or a main loop in the power distribution cabinet is reduced.

The shell can buffer high-temperature gas while metal particles of the intercepting arc-extinguishing chamber are discharged by arranging the metal layer and the insulating layer in the cover body, so that the normal work of the frame circuit breaker is guaranteed, and the influence on other equipment or a main loop in the power distribution cabinet is reduced. The overall structure of the shell is simple, and the cost is low.

Optionally, the mounting region and the insulating layer are further respectively provided with a mounting hole, and the insulating layer can be fixed to the mounting region through a fastener.

Optionally, the inside wall of installing zone still is equipped with the recess, the insulating layer can follow the circumference of recess laminate in the inside wall of installing zone, and with the recess encloses to close and forms and is used for installing the installation cavity of metal level.

Optionally, the number of the metal layers is at least two, and the through holes of two adjacent metal layers are arranged in a staggered manner.

Optionally, a gap interlayer is arranged between the metal layer and the insulating layer and/or between two adjacent metal layers, and the gap interlayer is of a frame structure.

Optionally, the metal layer is a metal mesh or a metal plate provided with the through hole.

Optionally, the cover is provided with at least two of the mounting areas.

Optionally, the cover body is a box structure with one side open, the box body and the bottom wall on the side opposite to the opening are provided with the mounting area, and the side wall of the box body is provided with a third air hole.

Optionally, the vent is a square hole, a circular hole, a polygonal hole or a strip-shaped hole.

The utility model also provides a frame type circuit breaker, which comprises a circuit breaker body and the shell, wherein the circuit breaker body is provided with an arc extinguishing chamber, and the shell is arranged outside the arc extinguishing chamber.

The technical effect of the frame-type circuit breaker with the housing is similar to that of the housing, and for saving space, the description is omitted.

Drawings

Fig. 1 is an exploded view of a frame circuit breaker provided by an embodiment of the present application;

FIG. 2 is a schematic structural view of the housing of FIG. 1;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is an exploded view of FIG. 2;

fig. 5 is a schematic view of the structure of the cover of fig. 2.

In fig. 1-5, the reference numerals are illustrated as follows:

100-a housing; 200-circuit breaker body, 210-arc chute;

1-cover body, 11-mounting area, 12-groove; 2-an insulating layer; 3-a metal layer; 41-a first air hole, 42-a second air hole, 43-a third air hole; 5-mounting holes; 6-a fastener; 7-an interstitial spacer.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the present application is further described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the application provides a frame circuit breaker and frame circuit breaker's casing, wherein, as shown in fig. 1, the frame circuit breaker includes circuit breaker body 200, and circuit breaker body 200 is equipped with explosion chamber 210, and casing 100 is installed in explosion chamber 210 top. The frame circuit breaker can produce electric arc at the breaking process, and electric arc extinguishes the process in the arc extinguishing chamber, has metal particle and high temperature gas blowout arc extinguishing chamber outside. The housing 100 is installed above the arc extinguish chamber 210, and can reduce the discharge of metal particles when the frame circuit breaker is disconnected, and buffer high-temperature gas, thereby reducing the influence of the discharge of high-temperature gas or the flying of metal particles on other equipment or main circuits in the power distribution cabinet.

Specifically, as shown in fig. 2 to 4, the housing 100 includes a cover body 1, a metal layer 3 and an insulating layer 2, wherein the number of the metal layer 3 is at least one, the cover body 1 is provided with a mounting area 11, the metal layer 3 and the insulating layer 2 are sequentially disposed on an inner side wall of the mounting area 11 and fixed with the mounting area 11, that is, the metal layer 3 is disposed between the mounting area 11 of the cover body 1 and the insulating layer 2, wherein the inner side wall of the mounting area 11 is a side wall of the cover body 1 facing the arc extinguish chamber 210, the mounting area 11 is provided with a plurality of first air holes 41, the insulating layer 2 is provided with a plurality of second air holes 42, and the metal layer 3 is provided with a plurality of through holes.

Wherein, the specific number and arrangement of the first air holes 41, the second air holes 42 and the through holes are not limited, and the number and arrangement can be set according to actual conditions.

The insulating layer 2 is provided with the second air hole 42, when the metal particles reach the shell 100, part of the metal particles can be blocked by the insulating layer 2, and part of the metal particles can pass through the second air hole 42 to reach the metal layer 3 and are adsorbed on the metal layer 3, so that the number of the metal particles flying out through the shell 100 is reduced, and the influence on other equipment or a main loop in the external power distribution cabinet caused by the flying out of the metal particles is reduced.

High-temperature gas sequentially passes through the second air holes 42 of the insulating layer 2, the through holes of the metal layer 3 and the first air holes 41 of the cover body 1 from inside to outside and is discharged, and in the process, due to the blocking of the insulating layer 2, the metal layer 3 and the cover body 1, the high-temperature gas flow can be buffered, and the influence of the high-temperature gas directly rushing out to other equipment or a main loop in the power distribution cabinet is reduced.

The housing 100 provided in this embodiment, by providing the metal layer 3 and the insulating layer 2 in the cover body 1, can intercept metal particles ejected from the arc extinguish chamber 210, and can also buffer high-temperature gas, thereby reducing the influence on other devices or main circuits in the power distribution cabinet under the condition of ensuring the normal operation of the frame circuit breaker. The overall structure of the housing 100 is relatively simple and low in cost.

As shown in fig. 5, the cover 1 is similar to a box, and one side of the box is provided with an opening facing to the upper side of the arc-extinguishing chamber 210 of the circuit breaker body 200 and fixed with the circuit breaker body 200 to be installed above the arc-extinguishing chamber 210, and the bottom wall (i.e., one side wall opposite to the opening) of the box is provided with the installation region 11. In this embodiment, the number of the mounting areas 11 is not limited, as shown in fig. 5, the cover body 1 is provided with only one mounting area 11, or the cover body 1 may be provided with at least two mounting areas 11, each mounting area 11 is correspondingly provided with a first vent 41, and the inner side wall of each mounting area 11 is provided with the metal layer 3 and the insulating layer 2 respectively. And the first ventilation holes 41 are not formed between the adjacent mounting regions 11, so that the metal particles and the high-temperature gas are prevented from being directly discharged along the positions.

As shown in fig. 5, the side wall of the cover body 1 (i.e. the side wall of the box body) may also be provided with a third vent hole 43, and the third vent hole 43 is provided to facilitate ventilation so as to further provide a buffer effect for the high-temperature gas.

Specifically, each side wall of the box body can be selectively provided with the third air holes 43 according to actual conditions, for example, the side wall of the box body connected with the circuit breaker body 200 is used for arranging the secondary circuit terminal in front of the circuit breaker body 200, and the rear side is used for installing the main circuit busbar, so the side walls of the cover body 1 in the two directions are not provided with the third air holes 43.

The installation area 11, the side wall of the box body and the insulating layer 2 are respectively provided with air holes, and in the embodiment, the shape, the size and the like of each air hole are not limited. The ventilation holes may be square holes, circular holes, polygonal holes, strip-shaped holes, or other regular or irregular holes, and the first ventilation hole 41, the second ventilation hole 42, and the third ventilation hole 43 may be completely the same, partially the same, or completely different.

As shown in fig. 3 and 4, the mounting region 11 and the insulating layer 2 are further respectively and correspondingly provided with mounting holes 5, the insulating layer 2 and the mounting region 11 can be fixed by fasteners 6, and the metal layer 3 is located between the two and can be clamped and fixed by the insulating layer 2 and the mounting region 11, or the metal layer 3 is also correspondingly provided with mounting holes 5 and can be fixed by the fasteners 6, which is not limited specifically herein.

Of course, in this embodiment, the fixing manner among the metal layer 3, the insulating layer 2 and the cover body 1 is not limited, and if the fixing manner is also applicable to fastening by a snap, the whole structure can be simplified by providing the mounting hole 5 and fixing by the fastening member 6. The fastening member 6 may be a rivet, a screw, a bolt, etc., and is not limited in particular.

As shown in fig. 5, the inner side wall of the mounting region 11 is further provided with a groove 12, and the insulating layer 2 can be attached to the inner side wall of the mounting region 11 along the circumferential direction of the groove 12 and forms a mounting cavity for mounting the metal layer 3 by enclosing with the groove 12. That is, the metal layer 3 is located in the groove 12, and the metal layer 3 can be fixed in the groove 12 after the insulating layer 2 is attached and fixed to the inner side wall of the mounting region 11.

Specifically, the mounting area 11 may be a structure with a certain thickness, and the inner sidewall thereof is provided with a groove 12, and the outer surface of the cover 1 is a flat structure, or alternatively, the mounting area 11 protrudes outward by means of stamping or the like, and the groove 12 is formed in the inner sidewall of the mounting area 11, and at this time, the outer surface of the cover 1 is provided with a protruding portion, and the mounting hole 5 is provided around the protruding portion.

In this embodiment, the number of the metal layers 3 may be one layer or at least two layers, and may be specifically set according to actual conditions, for example, the number of layers of the metal layers 3 may be determined according to voltage, and for a lower voltage occasion, one metal layer 3 may be selected, and for a higher voltage occasion, at least two metal layers 3 may be selected to intercept the discharge of metal particles more effectively.

And, when being equipped with two-layer metal level 3 at least, the through-hole staggered arrangement of two adjacent metal level 3, so, can further promote the adsorption effect of metal level 3 to the metal particle to realize blockking effectively the metal particle.

Specifically, the two adjacent metal layers 3 can be staggered integrally to realize the staggered arrangement of the through holes, or the sizes of the through holes of the two adjacent metal layers 3, the arrangement conditions and the like can be different (such as different meshes of the metal layers 3), so that the staggered arrangement of the through holes can be realized.

In this embodiment, the metal layer 3 may be a metal mesh, or may be a metal plate provided with through holes, and when the metal layer 3 is at least two layers, all of the metal mesh may be the metal mesh, or all of the metal plate may be the metal plate provided with through holes, or a part of the metal layer 3 may be the metal mesh, and a part of the metal layer 3 may be the metal plate provided with through holes.

As shown in fig. 3, in the present embodiment, a gap isolation layer 7 is further disposed between the metal layer 3 and the insulating layer 2, the gap isolation layer 7 is of a frame structure, and does not block metal particles or high-temperature gas, but the gap isolation layer 7 can increase the gap space between the metal layer 3 and the insulating layer 2, so as to provide a buffer space for the metal particles and the high-temperature gas in the process of being discharged outwards, so that the metal particles can be sufficiently adsorbed on the metal layer 3, and further buffer the high-temperature gas, thereby preventing the high-temperature gas from being directly discharged at high speed.

When the metal layers 3 are at least two layers, a gap isolation layer 7 can be arranged between two adjacent metal layers 3 to increase the gap space between the two metal layers 3 and provide a buffer effect.

That is to say, in the present embodiment, the gap spacers 7 may be only disposed between the metal layer 3 and the insulating layer 2, or only disposed between two adjacent metal layers 3, or the gap spacers 7 may be disposed between the metal layer 3 and the insulating layer 2, and between two adjacent metal layers 3.

In this embodiment, the material of the spacer 7 is not limited, and may be a metal material, or a high temperature-resistant insulating material similar to the insulating layer 2.

The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A shell of a frame circuit breaker is arranged above an arc extinguish chamber (210) of the frame circuit breaker, and is characterized by comprising a cover body (1), an insulating layer (2) and at least one metal layer (3);

the cover body (1) is equipped with installing zone (11), metal level (3) with insulating layer (2) set firmly in the inside wall of installing zone (11), just metal level (3) are located installing zone (11) with between insulating layer (2), installing zone (11) are equipped with a plurality of first bleeder vents (41), insulating layer (2) are equipped with a plurality of second bleeder vents (42), metal level (3) are equipped with a plurality of through-holes.

2. A frame circuit breaker housing according to claim 1, wherein the mounting area (11) and the insulating layer (2) are further provided with mounting holes (5) respectively, and the insulating layer (2) can be fixed with the mounting area (11) by fasteners (6).

3. A housing of a frame circuit breaker according to claim 2, wherein the inner side wall of the mounting area (11) is further provided with a groove (12), and the insulating layer (2) can be attached to the inner side wall of the mounting area (11) along the circumferential direction of the groove (12) and forms a mounting cavity for mounting the metal layer (3) together with the groove (12).

4. A case for a frame circuit breaker according to any one of claims 1-3, wherein the number of metal layers (3) is at least two, and the through holes of two adjacent metal layers (3) are arranged staggered.

5. A housing for a frame circuit breaker according to claim 4, characterized in that a gap barrier (7) is provided between the metal layer (3) and the insulating layer (2) and/or between two adjacent metal layers (3), the gap barrier (7) being of a frame structure.

6. A frame circuit breaker housing according to any of claims 1-3, characterized in that the metal layer (3) is a metal mesh or a metal plate provided with said through holes.

7. A frame circuit breaker housing according to any of claims 1-3, characterized in that the enclosure (1) is provided with at least two of said mounting areas (11).

8. A case for a frame circuit breaker according to any one of claims 1-3, wherein the cover (1) is a box structure with one side open, the bottom wall of the box opposite to the one side open is provided with the mounting area (11), and the side wall of the box is provided with a third vent (43).

9. A case for a frame circuit breaker according to any one of claims 1 to 3, wherein the airing hole is a square, circular, polygonal or bar hole.

10. A frame circuit breaker, characterized by comprising a breaker body (200) and a housing according to any of claims 1-9, the breaker body (200) being provided with an arc chamber (210), the housing being mounted above the arc chamber (210).