CN215377358U - Arc extinguishing cover of circuit breaker - Google Patents
Arc extinguishing cover of circuit breaker Download PDFInfo
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- CN215377358U CN215377358U CN202121589560.7U CN202121589560U CN215377358U CN 215377358 U CN215377358 U CN 215377358U CN 202121589560 U CN202121589560 U CN 202121589560U CN 215377358 U CN215377358 U CN 215377358U
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Abstract
The utility model relates to the technical field of arc-extinguishing shields, in particular to an arc-extinguishing shield of a circuit breaker; the device can be disassembled and assembled, and after a single part is damaged, the device can be independently replaced, so that the service life of the whole device is prolonged; including two sets of insulating curb plates, long insulation board, short insulation board and arc extinguishing grid, long insulation board and short insulation board centre gripping respectively between two sets of insulating curb plates, long insulation board, short insulation board and two sets of insulating curb plates enclose to close and form the arc extinguishing chamber, long insulation board, short insulation board and two sets of insulating curb plates pass through the bolt and can dismantle the connection, the arc extinguishing grid sets up in the arc extinguishing chamber.
Description
Technical Field
The utility model relates to the technical field of arc-extinguishing shields, in particular to an arc-extinguishing shield of a circuit breaker.
Background
As is known, an arc extinguishing chamber is a relatively common device for bringing an arc into contact with a solid medium to lower the temperature of the arc, thereby accelerating the extinction of the arc; publication (announcement) No. CN206040581U discloses an arc extinguishing chamber for explosion chamber, this arc extinguishing chamber sets up the one end at the explosion chamber, the arc extinguishing chamber includes the arc extinguishing chamber bottom plate and sets up the arc extinguishing chamber main part on the arc extinguishing chamber bottom plate, this arc extinguishing chamber main part includes a pair of parallel portion that sets up on the arc extinguishing chamber bottom plate and be parallel to each other, the opening enlarger portion that sets up in parallel portion one end and the end plate that sets up at the parallel portion other end, the gas blow that electric arc produced assembles the back between a pair of parallel portion of arc extinguishing chamber, blow into the arc extinguishing chamber with electric arc together through opening enlarger portion, electric arc is extinguished in the arc extinguishing chamber. One end of the arc extinguishing chamber is sealed by the arc extinguishing cover, so that gas leakage in the arc extinguishing chamber can be prevented, the opening amplification part is favorable for gas blowing diffusion, and the gas blowing effect is enhanced, so that gas blowing is more effectively utilized, electric arcs are blown into the arc extinguishing grid pieces, and the electric arcs are further quickly extinguished; the arc welding device is integrally formed, and once each part is damaged due to overlarge electric arc, the whole device needs to be replaced, so that great waste is caused, and certain use limitations are realized.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides the arc-extinguishing chamber of the circuit breaker, which can be disassembled and assembled, and can be independently replaced after a single part is damaged, thereby prolonging the service life of the whole equipment.
(II) technical scheme
In order to achieve the purpose, the utility model provides the following technical scheme: including two sets of insulating curb plates, long insulation board, short insulation board and arc extinguishing grid, long insulation board and short insulation board centre gripping respectively between two sets of insulating curb plates, long insulation board, short insulation board and two sets of insulating curb plates enclose to close and form the arc extinguishing chamber, long insulation board, short insulation board and two sets of insulating curb plates pass through the bolt and can dismantle the connection, the arc extinguishing grid sets up in the arc extinguishing chamber.
Preferably, the insulation side plate further comprises two groups of iron plate wings, and the two groups of iron plate wings are arranged on the two groups of insulation side plates respectively.
Preferably, the edges of the two groups of iron plate wings are provided with bending angles, and the bending angles are in an outward expansion shape.
Preferably, the inner walls of the long insulating plate and the short insulating plate are provided with clamping grooves, and the arc extinguishing grids are clamped in the clamping grooves.
Preferably, the insulation structure further comprises two groups of insulation side plates, and the two groups of insulation side plates are respectively arranged on the two groups of insulation side plates.
(III) advantageous effects
Compared with the prior art, the utility model provides an arc extinguishing cover of a circuit breaker, which has the following beneficial effects: this circuit breaker arc extinguishing chamber, introduce electric arc to the arc extinguishing intracavity, cut electric arc into the short electric arc that the several is established ties through the arc extinguishing grid, utilize the nearly utmost point pressure drop of grid piece on electric arc and the arc extinguishing grid to promote arc voltage by a wide margin, thereby reach obvious current-limiting, electric arc extinguishes with higher speed, when insulating curb plate, long insulation board or short insulation board take place to damage the back, can change alone, need not carry out the whole change to whole device, thereby the whole life of extension equipment, it dismantles the equipment more convenient and fast.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;
in the drawings, the reference numbers: 1. an insulating side plate; 2. a long insulating plate; 3. a short insulating plate; 4. an arc extinguishing grid; 5. iron plate wings; 6. bending an angle; 7. a card slot; 8. insulating side pieces.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the arc extinguishing chamber of the circuit breaker of the present invention includes two sets of insulating side plates 1, a long insulating plate 2, a short insulating plate 3 and an arc extinguishing grid 4, wherein the long insulating plate 2 and the short insulating plate 3 are respectively clamped between the two sets of insulating side plates 1, the long insulating plate 2, the short insulating plate 3 and the two sets of insulating side plates 1 enclose to form an arc extinguishing chamber, the long insulating plate 2, the short insulating plate 3 and the two sets of insulating side plates 1 are detachably connected by bolts, and the arc extinguishing grid 4 is disposed in the arc extinguishing chamber; introduce electric arc to the arc extinguishing intracavity, cut electric arc into the short electric arc of several series connection through arc extinguishing grid 4, utilize the nearly utmost point pressure drop of electric arc and the grid piece on arc extinguishing grid 4 to promote electric arc voltage by a wide margin, thereby reach obvious current-limiting, electric arc extinguishes with higher speed, after insulating curb plate 1, long insulation board 2 or short insulation board 3 take place to damage, can change alone, need not carry out the whole change to whole device, thereby the whole life of extension equipment, it dismantles the equipment more convenient and fast.
The arc extinguishing cover of the circuit breaker further comprises two groups of iron plate wings 5, wherein the two groups of iron plate wings 5 are respectively arranged on the two groups of insulating side plates 1; through the arrangement of the two groups of iron plate wings 5, the electric arc can be introduced into the arc extinguishing cavity, so that the electric arc is extinguished through the arc extinguishing grid 4; the edges of the two groups of iron plate wings 5 are provided with bending angles 6, and the bending angles 6 are in an outward expansion shape; the bending angles 6 on the two groups of iron plate wings 5 are arranged, so that electric arcs can be introduced into the arc extinguishing cavity more smoothly, and the arc introduction effect is improved; the inner walls of the long insulating plate 2 and the short insulating plate 3 are provided with clamping grooves 7, and the arc-extinguishing grids 4 are clamped in the clamping grooves 7; the arc-extinguishing grille 4 can be conveniently and independently replaced by fixedly clamping and connecting the arc-extinguishing grille 4 and the clamping groove 7; the insulating side plates 8 are respectively arranged on the two groups of insulating side plates 1; through the setting of two sets of insulating side pieces 8, can further improve the insulating current-limiting effect of device, reduce electric arc outdiffusion, further improve the arc extinguishing effect.
When the arc extinguishing device is used, an electric arc is introduced into an arc extinguishing cavity, the electric arc is cut into a plurality of short electric arcs connected in series through the arc extinguishing grid 4, the voltage of the electric arc is greatly increased by utilizing the near-pole voltage drop of the electric arc and grid pieces on the arc extinguishing grid 4, so that obvious current limiting is achieved, the electric arc extinguishing is accelerated, when the insulating side plates 1, the long insulating plates 2 or the short insulating plates 3 are damaged, the insulating side plates can be independently replaced, the whole device is not required to be integrally replaced, the service life of the whole device is prolonged, and the device is more convenient and rapid to disassemble and assemble; through the arrangement of the two groups of iron plate wings 5, the electric arc can be introduced into the arc extinguishing cavity, so that the electric arc is extinguished through the arc extinguishing grid 4; the bending angles 6 on the two groups of iron plate wings 5 are arranged, so that electric arcs can be introduced into the arc extinguishing cavity more smoothly, and the arc introduction effect is improved; the arc-extinguishing grille 4 can be conveniently and independently replaced by fixedly clamping and connecting the arc-extinguishing grille 4 and the clamping groove 7; through the setting of two sets of insulating side pieces 8, can further improve the insulating current-limiting effect of device, reduce electric arc outdiffusion, further improve the arc extinguishing effect.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a circuit breaker arc-extinguishing cover, its characterized in that includes two sets of insulating curb plate (1), long insulation board (2), short insulation board (3) and arc extinguishing grid (4), and long insulation board (2) and short insulation board (3) centre gripping respectively between two sets of insulating curb plate (1), and long insulation board (2), short insulation board (3) and two sets of insulating curb plate (1) enclose to close and form the arc extinguishing chamber, long insulation board (2), short insulation board (3) and two sets of insulating curb plate (1) can dismantle the connection through the bolt, arc extinguishing grid (4) set up in the arc extinguishing chamber.
2. An arc chute of a circuit breaker according to claim 1, characterized in that it further comprises two sets of iron plate wings (5), said two sets of iron plate wings (5) being respectively arranged on two sets of insulating side plates (1).
3. An arc chute breaker according to claim 2, characterized in that the edges of said two sets of iron plate wings (5) are provided with bending angles (6), and the bending angles (6) are outwardly extended.
4. A circuit breaker arc-extinguishing chamber according to claim 3, characterized in that the inner walls of the long insulating plate (2) and the short insulating plate (3) are provided with clamping grooves (7), and the arc-extinguishing grids (4) are clamped in the clamping grooves (7).
5. An arc chute of a circuit breaker according to claim 4, characterized in that it further comprises two sets of insulating side pieces (8), said two sets of insulating side pieces (8) being respectively disposed on two sets of insulating side plates (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121589560.7U CN215377358U (en) | 2021-07-13 | 2021-07-13 | Arc extinguishing cover of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121589560.7U CN215377358U (en) | 2021-07-13 | 2021-07-13 | Arc extinguishing cover of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215377358U true CN215377358U (en) | 2021-12-31 |
Family
ID=79608922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121589560.7U Active CN215377358U (en) | 2021-07-13 | 2021-07-13 | Arc extinguishing cover of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215377358U (en) |
-
2021
- 2021-07-13 CN CN202121589560.7U patent/CN215377358U/en active Active
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