CN217933684U - Arc extinguishing device of miniature circuit breaker - Google Patents
Arc extinguishing device of miniature circuit breaker Download PDFInfo
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- CN217933684U CN217933684U CN202220834700.0U CN202220834700U CN217933684U CN 217933684 U CN217933684 U CN 217933684U CN 202220834700 U CN202220834700 U CN 202220834700U CN 217933684 U CN217933684 U CN 217933684U
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- arc extinguishing
- arc
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- circuit breaker
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- 238000002955 isolation Methods 0.000 claims 1
- 238000010891 electric arc Methods 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000002923 metal particle Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
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Abstract
The utility model discloses a miniature circuit breaker's arc control device, include: a base and an arc extinguishing assembly; the arc extinguishing component is arranged in an arc extinguishing chamber formed by the base; the arc extinguishing subassembly includes: the arc extinguishing grid group comprises a mounting shell and a plurality of grid pieces; the arc extinguishing grid groups are arranged on the mounting shell and are distributed at intervals along the mounting shell; the distance between two adjacent arc extinguishing grid groups is greater than the distance between two adjacent grid plates in each arc extinguishing grid group. Has the following beneficial effects: set up through setting up a plurality of arc extinguishing bars piece group and carry out the interval, can also avoid appearing the short circuit condition between the bars piece when guaranteeing to cut apart high current electric arc to avoid the circuit breaker short circuit, like this circuit breaker just can realize breaking apart the electric arc that the index crossed 6000A or 10000A even, satisfies the market to the demand of cutting apart high current electric arc.
Description
Technical Field
The utility model relates to a technical field of circuit breaker, concretely relates to miniature circuit breaker's arc control device.
Background
The DPN miniature circuit breaker on the market at present is basically a product for breaking 3000A current, and can actually break less current exceeding 4500A. When customers need the breaking index of 6000A or even 10000A, the current products on the market can not reach the breaking index. The biggest problem of high breaking of the DPN miniature circuit breaker is that the L-pole arc extinguishing assembly is easy to cause short circuit between grids during testing, so that the product is short-circuited, and the test cannot be completed.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The L utmost point arc extinguishing subassembly to above current DPN miniature circuit breaker appears the short circuit condition between the bars piece easily when experimental, leads to the product short circuit, makes the problem that experimental unable completion, and this application provides a miniature circuit breaker's arc extinguishing device.
2. Technical scheme
In order to solve the above problem, the utility model provides a technical scheme does:
an arc extinguishing device of a small circuit breaker, comprising: a base and an arc extinguishing assembly; the arc extinguishing component is arranged in an arc extinguishing chamber formed by the base; the arc extinguishing assembly includes: the arc extinguishing grid group comprises a mounting shell and a plurality of grid pieces; the arc extinguishing grid groups are arranged on the mounting shell and are distributed at intervals along the mounting shell; the distance between two adjacent arc extinguishing grid plate groups is greater than the distance between two adjacent grid plates in each arc extinguishing grid plate group.
Further, the distance between two adjacent arc extinguishing grid groups is more than or equal to 1.5mm and less than or equal to 1.9mm.
Further, the distance between two adjacent arc extinguishing grid groups is equal to 1.6mm.
Further, the distance between two adjacent grid plates in each arc extinguishing grid plate group is greater than or equal to 1.0mm and less than or equal to 1.2mm.
Further, the distance between two adjacent grids in each arc extinguishing grid group is equal to 1.1mm.
Further, the mounting case includes: installing a base and an arc extinguishing chamber; the arc extinguishing cover is installed in the top of installation base and covers the logical groove that is used for supplying electric arc to pass through that a plurality of arc extinguishing grid group formed.
Furthermore, the mounting base and the arc-extinguishing chamber are both provided with clamping grooves for mounting grid pieces; the upper end and the lower end of the grid sheet are clamped into the clamping grooves through the buckles formed at the upper end and the lower end of the grid sheet respectively and are installed in the installation shell.
Furthermore, the arc extinguishing cover and the mounting base are respectively provided with a plurality of arc isolating walls for insulating the arc extinguishing grid pieces; the plurality of arc-isolating walls are respectively in one-to-one correspondence with the grid sheets arranged on the mounting shell.
Furthermore, a clamping groove is formed on the arc isolating wall; the buckles formed at the upper and lower ends of the grid sheet are respectively clamped into the clamping grooves formed by the arc-isolating walls.
Further, the arc extinguishing assembly includes: three arc extinguishing grid groups; each arc extinguishing grid group consists of three grid pieces.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
the arc extinguishing subassembly of miniature circuit breaker's arc extinguishing device that this application embodiment provided can also avoid appearing the short circuit condition between the bars through setting up a plurality of arc extinguishing bars piece group and carry out the interval setting when guaranteeing to cut apart high current electric arc to avoid the circuit breaker short circuit, like this, this circuit breaker just can realize breaking the electric arc that the index crossed 6000A or even 10000A, satisfies market to the demand of cutting apart high current electric arc.
Drawings
Fig. 1 is a schematic structural diagram of an arc extinguishing device of a miniature circuit breaker according to an embodiment of the present invention;
fig. 2 is a schematic view of an arc extinguishing assembly of an arc extinguishing device of the miniature circuit breaker of fig. 1;
the arc extinguishing device 10 of the miniature circuit breaker, the base 11, the arc extinguishing chamber 111, the arc extinguishing component 12, the installation shell 13, the installation base 131, the arc extinguishing cover 132, the arc extinguishing grid group 14, the grid 141 and the arc barrier 15.
Detailed Description
For a further understanding of the present invention, reference will be made to the drawings and examples for a detailed description of the invention.
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The utility model discloses in words such as first, second, be for the description the utility model discloses a technical scheme is convenient and set up, does not have specific limited action, is general finger, right the technical scheme of the utility model does not constitute limited action. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. 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. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art. The technical solutions in the same embodiment and between the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, which is all within the scope of the present invention.
Example 1
As shown in fig. 1 to 2, an arc extinguishing device 10 of a miniature circuit breaker of the present invention includes: a base 11 and an arc extinguishing assembly 12. The base 11 is formed with an arc extinguishing chamber 111, and the arc extinguishing assembly 12 is installed in the arc extinguishing chamber 111 to extinguish an arc entering the arc extinguishing chamber 111. The arc extinguishing assembly 12 includes: the mounting case 13 and a plurality of arc-extinguishing grid groups 14, the arc-extinguishing grid groups 14 are composed of a plurality of grid plates 141. The plurality of arc-extinguishing grid plate groups 14 are mounted on the mounting housing 13 and distributed at intervals along the mounting housing 13, and meanwhile, the distance between two adjacent arc-extinguishing grid plate groups 14 is greater than the distance between two adjacent grid plates 141 in each arc-extinguishing grid plate group 14. In this way, when the arc with high current passes through each arc-extinguishing grid group 14, the grid pieces 141 of the arc-extinguishing grid group 14 divide the arc, and meanwhile, because the distance between two adjacent arc-extinguishing grid groups 14 is large, the divided arc can be prevented from being reunited, so that the short circuit between the grid pieces 141 is avoided.
That is, when the breaker is subjected to breaking test, the arc is large, and the arc is essentially a charged metal particle. In the breaking process of the circuit breaker, an electric arc needs to be guided into the arc extinguish chamber 111, and the electric arc is cut by the arc extinguish assembly 12 in the arc extinguish chamber 111 and is extinguished. Since the small circuit breaker is narrower than a general circuit breaker, the height of the arc-extinguishing chamber 132 is only half of the size of the general circuit breaker, so the space in the arc-extinguishing chamber 111 is small, and the introduced arc (i.e. charged metal particles) is easily blocked between the arc-extinguishing grids 141, which causes short circuit of the arc-extinguishing component 12 in the arc-extinguishing chamber 111. When the circuit breaker is in a test process, if the arc extinguishing assembly 12 is in short circuit, the arc cannot be extinguished for a long time, and the circuit breaker is in fire or explosion.
The arc extinguishing assembly 12 of this scheme includes three arc extinguishing grid group 14, every arc extinguishing grid group 14 comprises three grid piece 141, like this, electric arc is every behind three grid piece 141, the interval between the adjacent two grid pieces 141 of interval than every arc extinguishing grid group 14 between the arc extinguishing grid group 14 doubles suddenly, consequently the electric arc (electrified metal particle) that is guided into in the testing process can not block up here, set up three arc extinguishing grid group 14 and make and remain 2 electric arc fast channels in whole explosion chamber 111, it can not have the short circuit risk. Therefore, the miniature circuit breaker has better arc breaking performance of 6000A or even 10000A.
Therefore, the arc extinguishing device 10 of the miniature circuit breaker is arranged at intervals by arranging the arc extinguishing grid piece groups 14, the short circuit condition between the grid pieces 141 can be avoided while the high-current arc is ensured to be cut apart, so that the short circuit of the circuit breaker is avoided, the circuit breaker can realize that the breaking index of the circuit breaker passes 6000A or even 10000A of arc, and the market demand for cutting apart the high-current arc is met.
In a preferred embodiment, the distance between two adjacent arc-extinguishing grid groups 14 is greater than or equal to 1.5mm and less than or equal to 1.9mm. This is more advantageous to prevent the arc from staying and polymerizing between two adjacent groups 14.
In this scheme, the distance between two adjacent arc-extinguishing grid groups 14 is equal to 1.6mm.
As a specific embodiment, the distance between two adjacent grid plates 141 in each arc extinguishing grid plate group 14 is greater than or equal to 1.0mm and less than or equal to 1.2mm. This is more advantageous for dividing the arc.
In this embodiment, the distance between two adjacent grid plates 141 in each arc extinguishing grid plate group 14 is equal to 1.1mm.
As a specific embodiment, the mounting case 13 includes: a base 131 and an arc chute 132 are mounted. A plurality of groups of arc chute plates 14 form a through slot for the arc to pass through. An arc chute 132 is mounted above the mounting base 131 and covers the through slot.
Specifically, the mounting base 131 and the arc chute 132 are each formed with a snap for mounting the grid 141. The upper and lower ends of the grid 141 are formed with a locking groove. The upper and lower ends of the grid 141 are respectively clamped into the slots by the fasteners and mounted on the mounting housing 13.
In a specific embodiment, the arc chute 132 is provided with a plurality of arc-separating walls 15. The plurality of arc-isolating walls 15 are respectively in one-to-one correspondence with the grid plates 141 mounted on the mounting base 131.
Specifically, the mounting base 131 and the arc extinguishing chamber 132 are both formed with a slot for mounting the grid, the upper and lower ends of the grid 141 are formed with a buckle, and the upper and lower ends of the grid 141 are respectively clamped into the slot by the buckle and mounted on the mounting housing 13.
As a specific structure, the arc chute 132 and the mounting base 131 are respectively provided with a plurality of arc barriers 15, and the arc barriers 15 are used for insulating the arc chute pieces. The plurality of arc-isolating walls 15 are respectively in one-to-one correspondence with the grid pieces arranged on the mounting shell. The arc wall 15 is formed with the above-described catching groove. The buckles formed at the upper and lower ends of the grid plate 141 are respectively clamped into the clamping grooves formed by the arc-isolating walls 15. Thus, the arc barrier 15 not only can serve as an insulating function to insulate each arc chute 141, but also can serve as a fixing function to fix each arc chute 141 at a corresponding position, so that the position of each arc chute 141 is not changed. This configuration enables the arc to travel only in the path between the arc grids 141 without spreading to other surrounding locations.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (10)
1. An arc extinguishing device of a small-sized circuit breaker, comprising: a base and an arc extinguishing assembly; the arc extinguishing assembly is arranged in an arc extinguishing chamber formed by the base; characterized in that, the arc extinguishing subassembly includes: the arc extinguishing grid group comprises a mounting shell and a plurality of grid pieces; the arc extinguishing grid groups are arranged on the mounting shell and are distributed at intervals along the mounting shell; the distance between two adjacent arc extinguishing grid plate groups is larger than the distance between two adjacent grid plates in each arc extinguishing grid plate group.
2. The arc extinguishing apparatus of a small circuit breaker according to claim 1,
the distance between two adjacent arc extinguishing grid groups is more than or equal to 1.5mm and less than or equal to 1.9mm.
3. The arc extinguishing apparatus of the small circuit breaker according to claim 2,
the distance between two adjacent arc extinguishing grid groups is equal to 1.6mm.
4. The arc extinguishing apparatus of the small circuit breaker according to claim 1,
the distance between two adjacent grid plates in each arc extinguishing grid plate group is more than or equal to 1.0mm and less than or equal to 1.2mm.
5. The arc extinguishing apparatus of the small circuit breaker according to claim 4,
and the distance between two adjacent grid plates in each arc extinguishing grid plate group is equal to 1.1mm.
6. The arc extinguishing apparatus of the small circuit breaker according to claim 1,
the mounting case includes: installing a base and an arc extinguishing chamber; the arc extinguishing cover is arranged above the mounting base and covers a plurality of through grooves formed by the arc extinguishing grid groups and used for electric arcs to pass through.
7. The arc extinguishing apparatus of the small circuit breaker according to claim 6,
the mounting base and the arc-extinguishing chamber are both provided with clamping grooves for mounting the grid pieces; the upper end and the lower end of the grid sheet are clamped into the clamping grooves respectively through the buckles formed at the upper end and the lower end of the grid sheet and are arranged in the mounting shell.
8. The arc extinguishing apparatus of the small circuit breaker according to claim 7,
the arc extinguishing cover and the mounting base are respectively provided with a plurality of arc isolating walls for insulating arc extinguishing grid pieces; the plurality of arc-isolating walls are respectively in one-to-one correspondence with the grid pieces arranged on the mounting shell.
9. The arc extinguishing apparatus of the small circuit breaker according to claim 8,
the clamping groove is formed on the arc isolating wall; the buckles formed at the upper end and the lower end of the grid sheet are respectively clamped into the clamping grooves formed by the arc isolation walls.
10. The arc extinguishing apparatus of the small circuit breaker according to claim 1,
the arc extinguishing assembly includes: the three arc extinguishing grid groups; each arc extinguishing grid piece group is composed of three grid pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220834700.0U CN217933684U (en) | 2022-04-12 | 2022-04-12 | Arc extinguishing device of miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220834700.0U CN217933684U (en) | 2022-04-12 | 2022-04-12 | Arc extinguishing device of miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217933684U true CN217933684U (en) | 2022-11-29 |
Family
ID=84176228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220834700.0U Active CN217933684U (en) | 2022-04-12 | 2022-04-12 | Arc extinguishing device of miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217933684U (en) |
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2022
- 2022-04-12 CN CN202220834700.0U patent/CN217933684U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325600 No. 18, Sha Hung Road, North white elephant Town, Yueqing City, Wenzhou, Zhejiang. Patentee after: Zhejiang Chuangqi Electric Co.,Ltd. Address before: 325600 No. 18, Sha Hung Road, North white elephant Town, Yueqing City, Wenzhou, Zhejiang. Patentee before: ZHEJIANG CHUANGQI ELECTRIC Co.,Ltd. |