CN207474404U - Novel arc extinguishing grid and its arc-chutes - Google Patents
Novel arc extinguishing grid and its arc-chutes Download PDFInfo
- Publication number
- CN207474404U CN207474404U CN201721525782.6U CN201721525782U CN207474404U CN 207474404 U CN207474404 U CN 207474404U CN 201721525782 U CN201721525782 U CN 201721525782U CN 207474404 U CN207474404 U CN 207474404U
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- Prior art keywords
- arc
- extinguishing grid
- arc extinguishing
- grid pieces
- bending part
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Abstract
The utility model is related to a kind of novel arc extinguishing grid and its arc-chutes, arc extinguishing grid pieces are a plates, which is provided with arc cutting portion, it is characterised in that：At least one bending part is provided in arc cutting portion width direction, which is recessed or convex, and the axis of the concave or convex is parallel with arc motion direction.The utility model be in the arc cutting portion of arc extinguishing grid pieces in the width direction on the bending part of at least one concave or convex is set, so that the length of run of grid width direction increases, the face surface area of adjacent grid also increases, increase grid quality, it can bear more arc energies, namely thermal capacity increases, and electric arc effect is preferably cooled down relative to traditional plate grid so as to obtain, the final breaking capacity for promoting arc-chutes.
Description
Technical field
The utility model is related to low voltage electrical apparatus technology fields, and in particular to a kind of novel arc extinguishing grid and its arc-chutes.
Background technology
It is disjunction and connect circuit that low-voltage circuit breaker acts on played in distribution line.When there is abnormal failure in circuit,
Such as during short circuit, the rapidly disjunction circuit by the separation of contact pair, to avoid equipment damage.The known reason such as industry, is carrying
Contact separation can generate electric arc in the case of stream, and especially when disconnecting Short-Circuit High Current, the energy of electric arc is big, the ablation to contact
Seriously, therefore in low-voltage circuit breaker, metal grating arc-extinguishing chamber is usually all set to extinguish electric arc, to ensure that electrical equipment is run
Safety.As shown in Figure 1, after electric arc enters grid, short arc that it will be divided into many series connection.Therefore it is well known that in low pressure
Arc voltage in breaker arc extinguishing room is mainly made of proximal pole pressure drop of the short arc on grid surface and voltage drop in arc column, passes through
The specific strategy that breaking capacity is promoted is realized in the increase of arc voltage, that is, increases grid quantity to increase proximal pole pressure drop number, is increased
Magnetic field and electric arc arc column is acted on even with special gas exhausted material to increase arc stream in strong arc-chutes.Such as Fig. 2 institutes
In the traditional arc extinguishing grid pieces shown, under the premise of arc-chutes internal electric field, magnetic field, flow field structure is not changed, arc-chutes are promoted
Breaking capacity, it is necessary to increase grid quantity, need to increase arc-chutes space, but as demand of the market to low-voltage circuit breaker is in
Now increasingly miniaturization, breaking capacity increasingly improve, and the conventional measures of above-mentioned promotion arc voltage are increasingly difficult to cope with.
Invention content
The purpose of this utility model is to provide a kind of novel arc extinguishing grid and its arc-chutes, and it is empty to increase arc-chutes in unobvious
Between, under the premise of unobvious change arc-chutes internal electric fields, magnetic field, flow field structure, be effectively increased arc stream and promote arc-chutes
Breaking capacity, be effectively increased arc-chutes thermal capacity and promote the reliability of disjunction, the miniaturization for breaker provides support.
In order to achieve the above objectives, the arc extinguishing grid pieces technical solution of the utility model use is：A kind of arc extinguishing grid pieces are a piece of
Shape body which is provided with arc cutting portion, be provided at least one bending part in arc cutting portion width direction, the bending
Part is recessed or convex, and the axis of the concave or convex is parallel with arc motion direction.
In said program, arc cutting portion width direction is equipped with multiple bending parts, multiple bending section subpackage
Include at least one recessed bending part and a convex bending part, and the alternate cloth in recessed bending part and convex bending part
It puts.
Further, the cross sectional shape of the recessed bending part and convex bending part is arc-shaped and recessed bending
Part and convex bending part connect, and waveform is formed with this.
In order to achieve the above objectives, the first arc-chutes technical solution of the utility model use is：A kind of arc-chutes, including
Multiple arc extinguishing grid pieces, the arc extinguishing grid pieces are a plates, which is provided with arc cutting portion, in arc cutting portion width direction
At least one bending part is provided with, which is recessed or convex；Each arc extinguishing grid pieces equideparture in the up-down direction
Row arranged stacked, there are gaps between adjacent arc extinguishing grid pieces.
In said program, two insulating arthropleuras are further included, two insulating arthropleuras are relatively arranged on the width side of arc extinguishing grid pieces
Upward both sides, the edge in each arc extinguishing grid pieces width direction are fixedly connected with insulating arthropleura.
Further, further include an insulated support, the insulated support be arranged on arc extinguishing grid pieces perpendicular to arc-chute
At one end on the other direction of piece width direction, insulated support provide support to the end of each arc extinguishing grid pieces.
In said program, an insulating support is further included, which is equipped with point the left support body of row and a right support body,
Left support body and right support body correspondence are respectively in both sides in the width direction of arc extinguishing grid pieces, right on left support body and right support body
Slot should be offered in the corresponding edge of each arc extinguishing grid pieces, the edge of the arc extinguishing grid pieces, which is embedded in corresponding slot, to be fixed.
The design principle of the utility model and the effect brought are：
The utility model be in the arc cutting portion of arc extinguishing grid pieces in the width direction at least one concave or convex is set
Bending part, since the axis of the bending part of grid is parallel with arc motion direction, it is clear that, this changes arc extinguishing in unobvious
While the electric field of room, magnetic field, adjacent grid gap section is suitably increased, that is, it is logical towards the movement of arc-chutes gas outlet to increase electric arc
Road fluency makes electric arc be easier to enter grid；The face surface area of adjacent grid is also increased, that is, is promoted in grid gap
Short arc is more fully contacted with grid；Simultaneously as increase grid increases grid quality in the length of run of width direction,
More arc energies can be thus born, that is, thermal capacity increases, it is more preferable relative to traditional plate grid so as to obtain
Cooling electric arc effect, improve the breaking capacity of arc-chutes；Further, since increase the structure that bending part also enhances grid
Intensity finally improves the reliability of arc-chutes disjunction.
Description of the drawings
Fig. 1 shows the flow path schematic diagram of arc current in the arc-chutes of the prior art；
Fig. 2 shows metal plate type grid schematic diagrames in the arc-chutes of the prior art；
Fig. 3 shows one arc chute chip architecture schematic diagram of the utility model embodiment；
Fig. 4 shows one arc-chutes assembling schematic diagram of the utility model embodiment；
Fig. 5 shows two arc chute chip architecture schematic diagram of the utility model embodiment；
Fig. 6 shows that two arc-chutes of the utility model embodiment assemble stereoscopic schematic diagram；
Fig. 7 shows the assembling schematic front view of two arc-chutes of the utility model embodiment one and embodiment；
Fig. 8 shows the schematic diagram of the insulated support of three arc-chutes of the utility model embodiment；
Fig. 9 shows the assembling schematic front view of three arc-chutes of the utility model embodiment；
Figure 10 shows the assembling stereoscopic schematic diagram of four arc-chutes of the utility model embodiment；
Figure 11 shows the stereoscopic schematic diagram of the insulating support in four arc-chutes of the utility model embodiment；
Figure 12 shows the stereoscopic schematic diagram of the arc extinguishing grid pieces in four arc-chutes of the utility model embodiment.
In the figures above：1st, arc extinguishing grid pieces；11st, arc cutting portion；111st, bending part；12nd, grid leg；121st, grid
Piece stabilizer blade；The 122nd, ear is installed；2nd, insulating arthropleura；3rd, gap；4th, sheet insulating part；41st, protrusion；5th, insulating supporting；51st, it is embedding
Slot；6th, insulating support；61st, left support body；611st, slot；62nd, right support body；621st, slot；63rd, intermediate transverse girder.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments：
Embodiment one：Referring to shown in Fig. 3 and Fig. 4, a kind of arc extinguishing grid pieces 1 and its arc-chutes：
Referring to Fig. 3, arc extinguishing grid pieces 1 are a lamellar body, substantially in " recessed " shape, by symmetrical two grid leg 12 and grid
Connecting portion between leg 12 is formed, and the deep region of connecting portion is equipped with arc cutting portion 11, which is used for
Electric arc is cut into several short arcs during the motion, the cutting short arc series connection of such multi-disc novel arc extinguishing grid 1 reaches arc extinguishing
Purpose.At least one bending part 111 is provided in 11 width direction of arc cutting portion, which is recessed
Or it is convex, the axis of the concave or convex is parallel with arc motion direction, and the axis is as described recessed in indicated in Fig. 3
Or convex center line A.Preferably, set that there are one recessed bending part 111 and one are convex in arc cutting portion width direction
Bending part 111, and recessed bending part 111 and convex 111 alternate arrangement of bending part, recessed bending part and convex bending
Partial cross sectional shape is that arc-shaped and recessed bending part 111 and convex bending part 111 connect, and wave is formed with this
Shape.Arc extinguishing grid pieces are generally made of metal, such as preferably steel material.
The recessed bending part 111 and convex bending part 111 can be V-arrangement etc. be engaged in industry personnel can be with
The geometry being envisioned as, and the bending part 111 of grid width direction fovea superior and convex 111 quantity of bending part not by
Limitation, can only have single concave or convex or multiple concave, convex are connected.
As shown in figure 3, the grid leg 12 of the arc extinguishing grid pieces 1 includes grid stabilizer blade 121 and installation ear 122, grid
Stabilizer blade 121 keeps original plate, but is not only restricted to shown in Fig. 3, the wave in the arc cutting portion 11 for the arc extinguishing grid pieces 1 that can also postpone
Shape wave shape.
Referring to Fig. 4 and with reference to shown in Fig. 7, the arc-chutes include multiple arc extinguishing grid pieces 1 and two insulating arthropleuras 2；Respectively
The equidistant parallel arranged stacked in the up-down direction of arc extinguishing grid pieces 1, there are gap 3, two insulating arthropleuras 2 between adjacent arc extinguishing grid pieces 1
It is relatively arranged on the both sides in the width direction of arc extinguishing grid pieces 1, edge and insulating arthropleura in each 1 width direction of arc extinguishing grid pieces
2 are fixedly connected, and specific arc extinguishing grid pieces 1 are to install 122 inlay card of ear with it to rivet in corresponding aperture on insulating arthropleura 2.
The axis of the present embodiment concave, convex feature is parallel with electric arc moving direction, and the gap between adjacent arc extinguishing grid pieces 1 is cut
Face increase appropriate due to concave, convex is conducive to be promoted the patency of gas channel.
The arc cutting portion 11 of the present embodiment waveform feature increases the face surface area of adjacent arc extinguishing grid pieces 1, arc-chute
Short arc between piece 1 obtains better cooling effect when more fully being contacted with arc extinguishing grid pieces；Increase by 1 mass of arc extinguishing grid pieces,
So that arc extinguishing grid pieces 1 can bear the more energy from electric arc before functional structure destruction, this is obviously to arc-chutes disjunction
The promotion of ability is beneficial.
Embodiment two：Referring to shown in Fig. 5, Fig. 6 and Fig. 7：
A kind of arc extinguishing grid pieces 1 and its arc-chutes, with embodiment one the difference lies in：Referring to Fig. 5, Fig. 6, arc extinguishing grid pieces
1 grid leg 12 only includes installation ear 122, without setting grid stabilizer blade 121.Other are as in the first embodiment, here not
It repeats again.
Embodiment three：Referring to shown in Fig. 8-Fig. 9：
A kind of arc extinguishing grid pieces 1 and its arc-chutes, with embodiment one the difference lies in：Arc-chutes further include an insulation branch
Support member 5, the insulated support 5 are arranged on one on the other direction of 1 width direction of arc extinguishing grid pieces on arc extinguishing grid pieces 1
At end, insulated support 5 provides support to the end of each arc extinguishing grid pieces 1.Particularly, as shown in figure 8, insulated support 5
The upper each arc extinguishing grid pieces 1 of correspondence are equipped with caulking groove 51, make insulated support 5 that comb shape be presented, caulking groove 51 is in 1 width side of arc extinguishing grid pieces
Upward tendency is identical with the tendency on 1 surface of arc extinguishing grid pieces, such as 1 end of arc extinguishing grid pieces is plate, then 51 tendency of caulking groove
For straight line, if 1 end of arc extinguishing grid pieces is waveform, 51 tendency of caulking groove is also waveform accordingly.The end of each arc extinguishing grid pieces 1
On portion's insertion insulated support 5 in corresponding caulking groove 51, support is provided to the end of each arc extinguishing grid pieces 1 with insulated support 5.
As shown in figure 9, the use of insulated support 5, support is provided to middle part of the arc extinguishing grid pieces 1 in width direction；Together
When, the increase of insulated support 5 also has insulation package action, effectively hinders contact and the short circuit of adjacent short arc, avoids short arc
The reduction of number.
At this moment other are as in the first embodiment, repeat no more.
Example IV：Referring to shown in Figure 10-Figure 12：
A kind of arc extinguishing grid pieces 1 and its arc-chutes, with example IV the difference lies in：It is not provided with pacifying on arc extinguishing grid pieces 1
Ear 122 is filled, and insulating arthropleura 2 and insulated support 5 are substituted to support arc extinguishing grid pieces 1 with an insulating support 6.Specifically, absolutely
Edge stent 6 is equipped with point the left support body 61 of row and a right support body 62, and left support body 61 and the correspondence of right support body 62 are respectively in and go out
Correspond to the corresponding sides of each arc extinguishing grid pieces 1 on both sides in the width direction of arc grid 1, left support body 61 and right support body 62
Edge offers slot 611,621, i.e. comb shape, the edge of the arc extinguishing grid pieces 1 is presented in left support body 61 and right support body 62
It is fixed in embedded corresponding slot 611,621.Supporter 61 and right support body 62 are linked into an integrated entity by intermediate transverse girder 63, are being pacified
Intermediate transverse girder 63 can effectively insulate with respect to moving contact when filling on-board the circuit breaker covers static contact copper bar.The mounting means is obvious
It thoroughly excludes to process the problem of bringing because of installation 122 riveting of ear.
Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement according to this, can not the scope of protection of the utility model be limited with this.
It is all according to the spirit of the present invention substantially equivalent change or modification for being made, should all cover the scope of protection of the utility model it
It is interior.
Claims (7)
1. a kind of arc extinguishing grid pieces are a plates, which is provided with arc cutting portion, it is characterised in that：The arc cutting portion is wide
Degree direction on be provided at least one bending part, the bending part be it is recessed or convex, the axis of the concave or convex with
Arc motion direction is parallel.
2. arc extinguishing grid pieces according to claim 1, it is characterised in that：Arc cutting portion width direction is equipped with multiple curved
Bent portions, multiple bending part include at least one recessed bending part and a convex bending part, and recessed bending section
Divide arrangement alternate with convex bending part.
3. arc extinguishing grid pieces according to claim 2, it is characterised in that：The recessed bending part and section of convex bending part
Face shape is that arc-shaped and recessed bending part and convex bending part connect, and waveform is formed with this.
4. a kind of arc-chutes, it is characterised in that：Including any one of multiple the claims 1-3 arc extinguishing grid pieces, respectively go out
Arc grid equidistant parallel arranged stacked in the up-down direction, there are gaps between adjacent arc extinguishing grid pieces.
5. arc-chutes according to claim 4, it is characterised in that：Two insulating arthropleuras are further included, two insulating arthropleuras are opposite
It is set to the both sides in the width direction of arc extinguishing grid pieces, the edge in each arc extinguishing grid pieces width direction is fixed with insulating arthropleura to be connected
It connects.
6. arc-chutes according to claim 5, it is characterised in that：An insulated support is further included, insulated support setting
The at one end on the other direction of arc extinguishing grid pieces width direction on arc extinguishing grid pieces, insulated support is to each arc extinguishing
The end of grid provides support.
7. arc-chutes according to claim 4, it is characterised in that：An insulating support is further included, which, which is equipped with, divides
The left support body of row and right support body, left support body and right support body correspondence are respectively in two in the width direction of arc extinguishing grid pieces
Corresponding edge on side, left support body and right support body corresponding to each arc extinguishing grid pieces offers slot, the arc extinguishing grid pieces
Edge is embedded in fixed in corresponding slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721525782.6U CN207474404U (en) | 2017-11-15 | 2017-11-15 | Novel arc extinguishing grid and its arc-chutes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721525782.6U CN207474404U (en) | 2017-11-15 | 2017-11-15 | Novel arc extinguishing grid and its arc-chutes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207474404U true CN207474404U (en) | 2018-06-08 |
Family
ID=62260720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721525782.6U Withdrawn - After Issue CN207474404U (en) | 2017-11-15 | 2017-11-15 | Novel arc extinguishing grid and its arc-chutes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207474404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706063A (en) * | 2017-11-15 | 2018-02-16 | 常熟开关制造有限公司(原常熟开关厂） | Novel arc extinguishing grid and its arc-chutes |
-
2017
- 2017-11-15 CN CN201721525782.6U patent/CN207474404U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107706063A (en) * | 2017-11-15 | 2018-02-16 | 常熟开关制造有限公司(原常熟开关厂） | Novel arc extinguishing grid and its arc-chutes |
| CN107706063B (en) * | 2017-11-15 | 2020-10-16 | 常熟开关制造有限公司(原常熟开关厂） | Novel arc extinguishing grid piece and arc extinguishing chamber thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180608 Effective date of abandoning: 20201016 |