CN107799370A - A kind of arc-chutes of breaker of plastic casing - Google Patents
A kind of arc-chutes of breaker of plastic casing Download PDFInfo
- Publication number
- CN107799370A CN107799370A CN201711267947.9A CN201711267947A CN107799370A CN 107799370 A CN107799370 A CN 107799370A CN 201711267947 A CN201711267947 A CN 201711267947A CN 107799370 A CN107799370 A CN 107799370A
- Authority
- CN
- China
- Prior art keywords
- arc
- piece
- metal grid
- aerogenesis
- pieces
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The present invention discloses a kind of arc quenching chamber structure of low-pressure plastic shell circuit breaker, centre is the metal grid of several pieces U-shapeds stacked horizontal with interval up and down, it is static contact immediately below metal grid, it is the arc striking piece of U-shaped directly over metal grid, there is gap between arc striking piece and metal grid, each height in left and right sides side has about one piece vertical arc separating wall outside the U-shaped of metal grid and arc striking piece, about the one piece vertical aerogenesis piece of each fixed fitting on the madial wall of inside of U-shaped opening of metal grid and arc striking piece or so two, two pieces of aerogenesis pieces are parallel to each other, face each other arrangement；Aerogenesis piece is installed additional in the inside of metal grid and the U-shaped opening of arc striking piece, air stream drives electric arc is produced under the erosion of electric arc, improves arc suppression chamber pressure, advantageously reduce arc temperature, promote electric arc to go to dissociate, the arc time is reduced, so as to increase substantially the breaking capacity of breaker.
Description
Technical field
The present invention relates to the arc quenching chamber structure of the low-pressure plastic shell circuit breaker in transmission ＆ distribution electrical domain, specifically breaker of plastic casing.
Background technology
Breaker of plastic casing includes the parts such as arc-control device, trip gear, contact system and operating mechanism.Arc-chutes are open circuits
The important composition part of device, its effect is to enter horizontal blanking to caused electric arc on contact system, and arc-chute is housed inside arc-chutes
Piece.Electric arc can be produced when the dynamic and static contact of breaker separates, the moving line of moving contact is producing in the inside of arc-chutes, electric arc
During life, by arc extinguishing grid pieces by between electric arc introducing grid, grid cuts into electric arc the short arc of series connection, electric arc is attenuated
And arc voltage is quickly improved, so as to extinguish electric arc.When circuit breaker short circuit disjunction, the reprimand of dynamic and static contact opens generation electric arc, when
After electric arc produces and enters arc-chutes, electric arc is understood to side wall and arc-chutes grid after running into the side wall and arc-chutes grid of arc-chutes
Scaling loss is produced, high-temperature gas can reduce the dielectric strength of institute's contact area caused by scaling loss, can cause restriking for electric arc, and this will prolong
The burning time of long arc, reduce the breaking capacity of breaker.
China Patent Publication No. is to provide a kind of arc-control device of breaker in CN2743961, is increased between arc extinguishing grid pieces
Add the mode of insulating part to solve arc extinguishing grid pieces insulation between layers and prevent electric arc back commutation, the method needs will screen
Shield is riveted on arc-chutes both sides, the shortcomings that installation is inconvenient be present, simultaneously because arc temperature is high, to the heatproof of shielding part
Performance requirement is very high, easily occurs, because anti-corrosion performance not enough causes the risk of deformation, influenceing the motion of moving contact；It can tie up simultaneously
Shield property is poor, non-exchange.
The content of the invention
In order to solve the problems, such as that the arc-chutes internal structure of existing breaker of plastic casing is present, the present invention proposes a kind of structure
Intensity is high, heat resistance is good, arc-chutes easy for installation, being easy to maintenance and the breaker of plastic casing that can accelerate arc extinguishing.
The technical solution adopted by the present invention is：The top of the present invention is cover plate, and centre is that level stacks with interval up and down
Several pieces U-shapeds metal grid, be static contact immediately below metal grid, be the arc striking piece of U-shaped directly over metal grid, draw
There is gap between arcs and metal grid, each height in left and right sides side has sagging on one piece outside the U-shaped of metal grid and arc striking piece
Straight arc separating wall, each fixed about one piece of fitting on the madial wall of inside of U-shaped opening of metal grid and arc striking piece or so two
Vertical aerogenesis piece, two pieces of aerogenesis pieces are parallel to each other, and face each other arrangement.
Further, two pieces of described aerogenesis piece upper ends are respectively provided with upper end projection, lower end is respectively provided with lower end projection, static contact
Stria is provided with, cover plate, which has to the projection extended between two pieces of aerogenesis pieces, projection, to be fixed and is inserted between two upper end projections, under
End projection is fixedly connected on stria.
Further, described aerogenesis piece is made up of advanced melamine glass fabric laminate.
The present invention use above-mentioned technical proposal after beneficial effect be：
1st, the present invention installs aerogenesis piece additional in the inside of metal grid and the U-shaped opening of arc striking piece, and gas is produced under the erosion of electric arc
Stream driving electric arc, improves arc suppression chamber pressure, hydrogen is included in caused air-flow, advantageously reduce arc temperature, promote electric arc to go
It is free, medium recovery strength in arc-chutes is improved, accelerates arc-chutes medium recovery, reduces the arc time, so as to significantly
Degree improves the breaking capacity of breaker.
2nd, aerogenesis piece can also protect the long leg of metal grid, prevent from producing electric arc between grid long leg and contact.
3rd, had using aerogenesis piece made of advanced melamine glass fabric laminate under same volume and thickness than nylon material
More preferable mechanical strength, more preferable shape stability, enough mechanical strengths can be realized under less space, without riveting etc.
Assembly process, directly it can be installed by fixing groove or muscle, it is easy for installation, it is maintainable high, it is conveniently replaceable, drain space is less,
More spaces is can be used for installation grid long leg, improve the magnetic volume and thermal capacity of grid, improve the arc extinguishing magnetic field of arc-chutes,
Be advantageous to improve arc extinction performance.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 exploded view；
Fig. 3 is to remove the structure chart after cover plate and static contact in Fig. 1；
Fig. 4 is the structure chart of single metal grid in Fig. 1；
Fig. 5 is the structure chart of arc striking piece in Fig. 1；
Fig. 6 is the structure chart of single aerogenesis piece in Fig. 1；
In figure：1. arc separating wall；2. arc striking piece；3. metal grid；4. aerogenesis piece；5. static contact；6. cover plate；201. striking pin；
202. arcs bellies；301. grid long legs；302. grid bellies；401. upper ends are raised；402. lower ends are raised；501. stria；
601. projection.
Embodiment
As shown in Figure 1, 2, 3, the top of arc-chutes is cover plate 6, and centre is several pieces U-shapeds that level stacks with interval up and down
Metal grid 3, the underface of metal grid 3 is static contact 5.It is the arc striking piece 2 of U-shaped in the surface of metal grid 3, striking
Piece 2 has gap in the lower section of cover plate 6 and between metal grid 3.The left and right sides outside the U-shaped of metal grid 3 and arc striking piece 2
Respectively there are about one piece vertical arc separating wall 1, metal grid 3 and arc striking piece 2 in side between two pieces of arc separating walls 1, and metal gate
The lateral wall geometrical clamp of left and right two of piece 3 and arc striking piece 2 is on two pieces of arc separating walls 1, by two pieces of arc separating walls 1 by the He of metal grid 3
Arc striking piece 2 is fixed.
It is sagging in each fixed one piece of fitting on the madial wall of inside of U-shaped opening of metal grid 3 and arc striking piece 2 or so two
The aerogenesis piece 4 of straight prefabricated sheet, in the inside of metal grid 3 and the U-shaped opening of arc striking piece 2, two pieces of aerogenesis pieces 4 are mutually flat
OK, face each other arrangement.
Two pieces of the left and right upper end of aerogenesis piece 4 is respectively provided with upper end projection 401, and the lower end of aerogenesis piece 4 is respectively provided with lower end projection 402,
Static contact 5 is provided with stria 501.Cover plate 6, which has to the projection 601 extended between two pieces of aerogenesis pieces 4, projection 601, fixes insertion
Between two upper end projections 401 of two pieces of the left and right upper end of aerogenesis piece 4, the lower end lower end projection 402 of aerogenesis piece 4 is fixedly connected on quiet
On contact 5 on set stria 501, so, aerogenesis piece 4 is fixed by the static contact 5 of lower section and the cover plate 6 of top.
As shown in figure 4, the U-shaped two side of metal grid 3 is grid long leg 301, U-shaped bottom wall is grid belly 302, grid
The madial wall of long leg 301 fits with aerogenesis piece 4.
As shown in figure 5, the U-shaped two side of arc striking piece 2 is striking pin 201, U-shaped bottom wall is arc striking piece belly 202, aerogenesis piece
4 fit with the madial wall of striking pin 201.
As illustrated in figures 6 and 5, the upper end projection 401 of aerogenesis piece 4 upwardly extends, and is stuck in striking pin 201 and arc striking piece belly
Between 202, the lower end projection 402 of aerogenesis piece 4 extends downwardly, and is stuck in all corresponding strias 501 in the upper surface of static contact 5.Production
The upper end of gas piece 4 is concordant with the upper end of arc striking piece 2, i.e. upper end projection 401 is concordant with arc striking piece 2.Because the space of arc-chutes limits
The grid long leg 301 made and need to ensure metal grid 3 has certain left and right width, so the left and right thickness of aerogenesis piece 4
It is limited to 1-2mm scopes.
Metal grid 3 is made up of ferrimagnet, and in short circuit breaking, grid long leg 301 plays the work in enhancing magnetic field
With, be advantageous to drive electric arc to enter arc-chutes, but at the same time, because arc diameter is very big, the meeting when entering grid belly 302
Grid long leg 301 is corroded, therefore, aerogenesis piece 4 is placed on inside the U-shaped of metal grid 3 by the present invention, and aerogenesis piece 4 uses aerogenesis
Material is made, such as advanced melamine glass fabric laminate is made, and is close to the grid long leg 301 and arc striking piece 2 of metal grid 3
Striking pin 201, obtaining support enough makes it also have sufficient intensity under disjunction air-flow, can protect the grid of metal grid 3 well
Piece long leg 301 is from electrical arc erosion.
During installation, the stria 501 that first inserts the lower end of aerogenesis piece 4 projection 402 on static contact 5, then by aerogenesis piece 4
Upper end projection 401 is inserted between the striking pin 201 and arc striking piece belly 202 of arc striking piece 2, then installs cover plate 6, by the convex of cover plate 6
Between the upper end projection 401 of the aerogenesis piece 4 of the insertion of block 601 left and right sides.
Claims (5)
1. a kind of arc-chutes of breaker of plastic casing, top are cover plates（6）, centre is several pieces U that level stacks with interval up and down
The metal grid of shape（3）, metal grid（3）Underface be static contact（5）, it is characterized in that：Metal grid（3）Surface be
The arc striking piece of U-shaped（2）, arc striking piece（2）With metal grid（3）Between have gap, in metal grid（3）And arc striking piece（2）U-shaped
The outer each height in left and right sides side has about one piece vertical arc separating wall（1）, in metal grid（3）And arc striking piece（2）U-shaped opening
About one piece vertical aerogenesis piece of each fixed fitting on two madial walls of internal left and right（4）, two pieces of aerogenesis pieces（4）It is parallel to each other, that
This is arranged face-to-face.
2. a kind of arc-chutes of breaker of plastic casing according to claim 1, it is characterized in that：Two pieces of aerogenesis pieces（4）Upper end is equal
It is raised with upper end（401）, lower end be respectively provided with lower end projection（402）, static contact（5）It is provided with stria（501）, cover plate（6）Tool
Oriented two pieces of aerogenesis pieces（4）Between the projection that extends（601）, projection（601）Fixation is inserted in two upper end projections（401）Between,
Lower end is raised（402）It is fixedly connected on stria（501）On.
3. a kind of arc-chutes of breaker of plastic casing according to claim 1, it is characterized in that：Aerogenesis piece（4）By melamine
Glass cloth laminated sheet is made.
4. a kind of arc-chutes of breaker of plastic casing according to claim 1, it is characterized in that：Aerogenesis piece（4）Upper end with drawing
Arcs（2）Upper end it is concordant.
5. a kind of arc-chutes of breaker of plastic casing according to claim 1, it is characterized in that：Each aerogenesis piece（4）Left and right
Thickness is 1-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711267947.9A CN107799370A (en) | 2017-12-05 | 2017-12-05 | A kind of arc-chutes of breaker of plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711267947.9A CN107799370A (en) | 2017-12-05 | 2017-12-05 | A kind of arc-chutes of breaker of plastic casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107799370A true CN107799370A (en) | 2018-03-13 |
Family
ID=61537887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711267947.9A Pending CN107799370A (en) | 2017-12-05 | 2017-12-05 | A kind of arc-chutes of breaker of plastic casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107799370A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109859973A (en) * | 2019-03-20 | 2019-06-07 | 浙江正泰电器股份有限公司 | Arc-extinguishing chamber of low-voltage circuit breaker |
| CN109904020A (en) * | 2019-03-20 | 2019-06-18 | 浙江正泰电器股份有限公司 | Arc-extinguishing chamber of low-voltage circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437755A (en) * | 1999-12-31 | 2003-08-20 | Abb服务有限公司 | Arc chamber for low-voltage circuit breakers |
| CN202058677U (en) * | 2011-05-06 | 2011-11-30 | 北京人民电器厂有限公司 | Arc extinguishing chamber for breaker |
| CN203250707U (en) * | 2013-03-21 | 2013-10-23 | 浙江正泰电器股份有限公司 | Grid arc-extinguishing chamber for low-voltage circuit breaker |
| CN103871795A (en) * | 2014-03-19 | 2014-06-18 | 云南追梦科技有限公司 | Breaker arc extinguishing chamber and breaker with breaker arc extinguishing chamber |
| CN207690742U (en) * | 2017-12-05 | 2018-08-03 | 江苏辉能电气有限公司 | A kind of arc-chutes of breaker of plastic casing |
-
2017
- 2017-12-05 CN CN201711267947.9A patent/CN107799370A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437755A (en) * | 1999-12-31 | 2003-08-20 | Abb服务有限公司 | Arc chamber for low-voltage circuit breakers |
| CN202058677U (en) * | 2011-05-06 | 2011-11-30 | 北京人民电器厂有限公司 | Arc extinguishing chamber for breaker |
| CN203250707U (en) * | 2013-03-21 | 2013-10-23 | 浙江正泰电器股份有限公司 | Grid arc-extinguishing chamber for low-voltage circuit breaker |
| CN103871795A (en) * | 2014-03-19 | 2014-06-18 | 云南追梦科技有限公司 | Breaker arc extinguishing chamber and breaker with breaker arc extinguishing chamber |
| CN207690742U (en) * | 2017-12-05 | 2018-08-03 | 江苏辉能电气有限公司 | A kind of arc-chutes of breaker of plastic casing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109859973A (en) * | 2019-03-20 | 2019-06-07 | 浙江正泰电器股份有限公司 | Arc-extinguishing chamber of low-voltage circuit breaker |
| CN109904020A (en) * | 2019-03-20 | 2019-06-18 | 浙江正泰电器股份有限公司 | Arc-extinguishing chamber of low-voltage circuit breaker |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180313 |
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| RJ01 | Rejection of invention patent application after publication |