CN206040579U - Arc extinguish chamber of circuit breaker - Google Patents
Arc extinguish chamber of circuit breaker Download PDFInfo
- Publication number
- CN206040579U CN206040579U CN201621014413.6U CN201621014413U CN206040579U CN 206040579 U CN206040579 U CN 206040579U CN 201621014413 U CN201621014413 U CN 201621014413U CN 206040579 U CN206040579 U CN 206040579U
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- China
- Prior art keywords
- arc
- circuit breaker
- extinguishing
- insulating protector
- static contact
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model belongs to the technical field of the circuit breaker technique and specifically relates to an arc extinguish chamber of circuit breaker, including two curb plates and installing the arc extinguishing bars piece of a plurality of vertical ranges between two curb plates, the bottom of explosion chamber is equipped with the static contact arm, is equipped with the insulation protection body between static contact arm and the explosion chamber. The utility model discloses an arc extinguish chamber of circuit breaker's the insulation protection body can play the effect at a distance from the arc, prevents the secondary breakdown, plays the guide effect to the striking moreover, and the insulation protection body increases arc extinguishing indoor air pressure in addition, makes the electric arc quick travel elongate to make the striking time shorter, circuit breaker breaking capacity is better, is favorable to electric arc to extinguish fast.
Description
Technical field
The utility model is related to breaker technical field, especially arc-extinguishing chamber of circuit breaker.
Background technology
Breaker in separating brake, due to contact from touch separate during, the gap between two contacts from small to large,
In the presence of high voltage, the dielectric in gap can be ionized and puncture, and form electric arc, after electric arc is formed, the heat meeting of generation
Medium ionization is further exacerbated by, is expanded electric arc, is made the breaker cannot disconnecting circuit.
In order to prevent this process, when breaker is designed, moving contact and static contact are mounted in an arc extinguishing room,
There are many arc extinguishing grid pieces inside arc-chutes, one is subdividing the arc, and two is the high pressure draught produced using high arc temperature, by arc extinguishing
The certain channel nozzle in room blows out electric arc.It is to extinguish one of basic skills of electric arc using arc extinguishing grid pieces arc extinguishing, in AC low-tension
In device for switching, when electric arc is produced between contact, electric arc is drawn into arc extinguishing grid pieces under the convergent force effect of the magnetic line of force, and one long
Arc is divided into multistage short arc, and when alternating current zero passage, all short arcs extinguish simultaneously, due to nearly cathode effect, every section of short arc
Negative electrode near all occur the starting medium intensity of 150-250V immediately, as long as the starting medium intensity summation of all series connection short arcs
More than the applied voltage between contact, electric arc no longer will be restriked, but existing arc-chutes limiting short-circuit current is limited in one's ability, deposits
In the potential danger of electric arc second breakdown, once the circuit that second breakdown breaker occurs is switched on, equipment can be caused greatly
Harm, and infringement can be caused to the person.
Utility model content
The purpose of this utility model is the defect for overcoming prior art to exist, there is provided one kind can prevent second breakdown and go out
The quick arc-extinguishing chamber of circuit breaker of arc.
In order to realize the purpose of this utility model, the technical scheme for being adopted is：
Arc-extinguishing chamber of circuit breaker of the present utility model includes two side plates and the multiple vertical row between two side plates
The arc extinguishing grid pieces of row, the bottom of the arc-chutes are provided with stationary contact head arm, be provided with insulation and protect between the stationary contact head arm and arc-chutes
Watch box.
Insulating protector described in the utility model is coated on the top of the stationary contact head arm, one end of the insulating protector
Vertical protective is extended upward, the vertical protective coats the outer end of the arc extinguishing grid pieces.
Flash barrier is installed the top side detachable of arc-chutes described in the utility model, the flash barrier is fixed on two sides
Between plate.
Insulating protector described in the utility model is made using aerogenesis arc quenching material, and the side plate adopts polyamide system
Into the arc extinguishing grid pieces are made using steel matter, are coated with nickel film on the arc extinguishing grid pieces.
One end of stationary contact head arm described in the utility model is provided with static contact, and the static contact is located between two side plates and puts
In the lower section of the arc extinguishing grid pieces of the bottom, the bottom of the arc extinguishing grid pieces of the bottom is provided with striking pin, and the striking pin is quiet with described
There is between contact gap, the insulating protector has the port for allowing the static contact to project insulating protector.
The other end of static contact described in the utility model is provided with binding post.
The beneficial effect of arc-extinguishing chamber of circuit breaker of the present utility model is：Arc-extinguishing chamber of circuit breaker of the present utility model includes two
Side plate and the multiple vertically disposed arc extinguishing grid pieces between two side plates, the bottom of arc-chutes are provided with stationary contact head arm, quiet
Insulating protector is provided between contact arm and arc-chutes, and insulating protector can play a part of arc, prevent second breakdown, and
And guide effect is played to striking, insulating protector increases arc extinguishing room pressure in addition, makes electric arc quickly mobile elongation, so that
The striking time is shorter, and breaker breaking capacity more preferably, is conducive to electric arc quickly to extinguish.
Description of the drawings
With reference to the accompanying drawings and detailed description the utility model is described in further detail.
Fig. 1 is the overall structure diagram of arc-extinguishing chamber of circuit breaker of the present utility model；
Fig. 2 is the side view of arc-extinguishing chamber of circuit breaker of the present utility model；
Fig. 3 is insulating protector structural representation of the present utility model.
Wherein：Side plate 1, arc extinguishing grid pieces 2, stationary contact head arm 3, insulating protector 4, flash barrier 5.
Specific embodiment
In description of the present utility model, it is to be understood that term " radial direction ", " axial direction ", " on ", D score, " top ",
The orientation of the instruction such as " bottom ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, merely to just
In description the utility model and simplified description, rather than indicate or imply that the device or element of indication there must be specifically side
Position, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.In description of the present utility model
In, unless otherwise stated, " multiple " are meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " setting ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly
Connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art,
Concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
As Figure 1-3, the arc-extinguishing chamber of circuit breaker of the present embodiment includes two side plates 1 and is arranged between two side plates 1
Multiple vertically disposed arc extinguishing grid pieces 2, the bottom of arc-chutes is provided with stationary contact head arm 3, is provided between stationary contact head arm 3 and arc-chutes
Insulating protector 4.Specifically, insulating protector 4 is coated on the top of stationary contact head arm 3, and one end of insulating protector 4 upwardly extends
Go out vertical protective, vertical protective coats the outer end of arc extinguishing grid pieces 2, and insulating protector 4 can play a part of arc, prevents
Only second breakdown, and guide effect is played to striking, insulating protector 4 increases arc extinguishing room pressure in addition, makes electric arc quick
Mobile to elongate, so that the striking time is shorter, breaker breaking capacity more preferably, is conducive to electric arc quickly to extinguish.
Flash barrier 5 is installed the top side detachable of the arc-chutes in the present embodiment, flash barrier 5 is fixed on two side plates 1
Between, flash barrier 5 can play a part of arc.
Preferably, insulating protector 4 is made using aerogenesis arc quenching material, for example with nylon66 fiber or nylon 46, resistance to combustion, resistance to
Mill, tensile strength are high, electrical insulating property is good, and side plate 1 is made using polyamide, and arc extinguishing grid pieces 2 are made using steel matter, arc extinguishing
Nickel film is coated with grid 2.
One end of stationary contact head arm 3 in the present embodiment is provided with static contact, and static contact is located between two side plates 1 and is placed in most
The lower section of the arc extinguishing grid pieces 2 of bottom, the bottom of the arc extinguishing grid pieces 2 of the bottom are provided with striking pin, have between striking pin and static contact
There is gap, insulating protector 4 has the port for allowing static contact to project insulating protector 4, and the other end of static contact is provided with wiring
Terminal.The moving contact of breaker is located at the top of static contact, and during breaker disjunction, electric arc is produced, and electric arc can be along striking pin upwards
Walk, electric arc is introduced in arc extinguishing room, insulating protector 4 can play a part of arc, prevent the unexpected thing that second breakdown is caused
Therefore, and insulating protector 4 increases arc extinguishing room pressure, makes that electric arc is quickly mobile to be elongated, electric arc can more it is smooth rapidly
It is introduced in arc extinguishing room, the breaking capacity of breaker is greatly improved, the quenching time substantially shortens.
It should be appreciated that specific embodiment described above is only used for explaining the utility model, it is not used to limit this reality
With new.By spirit of the present utility model it is extended obvious change or change still in protection of the present utility model
Among scope.
Claims (6)
1. a kind of arc-extinguishing chamber of circuit breaker, including two side plates (1) and is arranged on multiple vertically disposed between two side plates (1)
Arc extinguishing grid pieces (2), the bottom of the arc-chutes are provided with stationary contact head arm (3), it is characterised in that：Stationary contact head arm (3) and arc extinguishing
Insulating protector (4) is provided between room.
2. arc-extinguishing chamber of circuit breaker according to claim 1, it is characterised in that：Insulating protector (4) are coated on described
The top of stationary contact head arm (3), the one end of insulating protector (4) extend upward vertical protective, the vertical protective
Coat the outer end of the arc extinguishing grid pieces (2).
3. arc-extinguishing chamber of circuit breaker according to claim 1, it is characterised in that：Install on the top side detachable ground of the arc-chutes
There is flash barrier (5), flash barrier (5) are fixed between two side plates (1).
4. arc-extinguishing chamber of circuit breaker according to claim 1, it is characterised in that：Insulating protector (4) are gone out using aerogenesis
Arc material is made, and side plate (1) is made using polyamide, and arc extinguishing grid pieces (2) are made using steel matter, described to go out
Arc grid is coated with nickel film on (2).
5. arc-extinguishing chamber of circuit breaker according to claim 1, it is characterised in that：The one end of stationary contact head arm (3) is provided with quiet
Contact, the static contact be located between two side plates (1) and be placed in the bottom arc extinguishing grid pieces (2) lower section, the bottom goes out
The bottom of arc grid (2) is provided with striking pin, has gap, the insulating protector between the striking pin and the static contact
(4) there is the port for allowing the static contact to project insulating protector (4).
6. arc-extinguishing chamber of circuit breaker according to claim 5, it is characterised in that：The other end of the static contact is provided with wiring
Terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621014413.6U CN206040579U (en) | 2016-08-29 | 2016-08-29 | Arc extinguish chamber of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621014413.6U CN206040579U (en) | 2016-08-29 | 2016-08-29 | Arc extinguish chamber of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206040579U true CN206040579U (en) | 2017-03-22 |
Family
ID=58301341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621014413.6U Active CN206040579U (en) | 2016-08-29 | 2016-08-29 | Arc extinguish chamber of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206040579U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680891A (en) * | 2017-10-31 | 2018-02-09 | 首瑞（天津）电气设备有限公司 | A kind of contact arc-extinguishing system, low-voltage circuit breaker and arc quenching system |
| CN107749361A (en) * | 2017-11-15 | 2018-03-02 | 常熟开关制造有限公司(原常熟开关厂） | Arc extinguishing grid pieces, arc-chutes and breaker |
| WO2023051556A1 (en) * | 2021-09-29 | 2023-04-06 | Schneider Electric Industries Sas | Arc extinguishing apparatus and circuit breaker including arc extinguishing apparatus |
-
2016
- 2016-08-29 CN CN201621014413.6U patent/CN206040579U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680891A (en) * | 2017-10-31 | 2018-02-09 | 首瑞（天津）电气设备有限公司 | A kind of contact arc-extinguishing system, low-voltage circuit breaker and arc quenching system |
| CN107680891B (en) * | 2017-10-31 | 2020-06-30 | 首瑞（天津）电气设备有限公司 | Contact arc extinguishing system, low-voltage circuit breaker and arc extinguishing system |
| CN107749361A (en) * | 2017-11-15 | 2018-03-02 | 常熟开关制造有限公司(原常熟开关厂） | Arc extinguishing grid pieces, arc-chutes and breaker |
| CN107749361B (en) * | 2017-11-15 | 2020-12-18 | 常熟开关制造有限公司(原常熟开关厂） | Arc extinguishing bars piece, explosion chamber and circuit breaker |
| WO2023051556A1 (en) * | 2021-09-29 | 2023-04-06 | Schneider Electric Industries Sas | Arc extinguishing apparatus and circuit breaker including arc extinguishing apparatus |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |