CN107045967B - A kind of arc-extinguishing chamber of circuit breaker sealing structure - Google Patents
A kind of arc-extinguishing chamber of circuit breaker sealing structure Download PDFInfo
- Publication number
- CN107045967B CN107045967B CN201610082533.8A CN201610082533A CN107045967B CN 107045967 B CN107045967 B CN 107045967B CN 201610082533 A CN201610082533 A CN 201610082533A CN 107045967 B CN107045967 B CN 107045967B
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- China
- Prior art keywords
- arc
- moving contact
- main shaft
- sealing
- circuit breaker
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- 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
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- 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
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of arc-extinguishing chamber of circuit breaker sealing structure, it includes moving contact (1), main shaft (2), mounting bracket (3) and pedestal (4), mounting bracket (3) is on pedestal (4), the moving contact (1), which is mounted on main shaft (2), to be swung around main shaft (2), it is characterized by: moving contact (1) tail portion is equipped with sealing cover (5), sealing cover (5) can play sealing function to the gap between moving contact (1) tail portion and main shaft (2), sealing (201) are equipped with at moving contact (1) cooperation on the main shaft (2), seal closure (6) are housed on the mounting bracket (3), seal closure (6) and sealing (201) collective effect can separate moving contact (1) top and arc extinguishing region.The entrance spindle end that the present invention keeps high pressure gas few as far as possible, promotes electric arc to enter in arc-chutes faster and extinguishes, charged particle is greatly reduced and enters main shaft region phenomenon, to play protection dynamic/static contact, improves the purpose of breaker service life.
Description
Technical field
The invention belongs to low voltage electrical apparatus technology field, in particular to a kind of arc-extinguishing chamber of circuit breaker sealing structure makes high pressure gas
Body entrance spindle end few as far as possible, promotes electric arc to enter in arc-chutes faster and extinguishes, to play protection dynamic/static contact, mention
The purpose of high breaker service life
Background technique
Breaker is the pith in electrical power distribution apparatus, is mainly used for industrial low-voltage power system, for connecting and dividing
The danger of electric current and protection circuit and power-supply device in disconnected mains-power circuit from failures such as overload, under-voltage, short circuit, single-phase earthings
Evil.
The function that breaker carries out disjunction to overload or short circuit current is mainly the arc-chutes by being mounted in breaker
It completes.When the electric current that breaks down in circuit, and when current value is more than the setting protection scope of intelligent controller, driving operation
Mechanism action disconnects the dynamic and static contact of breaker rapidly, and the voltage between dynamic and static contact causes air dielectric to discharge at this time
To generate high-temperature electric arc.Electric arc causes the air themperature in arc-control device to steeply rise in combustion to accelerate air
Ionization.On the other hand, it under the promotion in magnetic field and hydrodynamic effect of the electric arc in arc-chutes, is separated by multiple arc grid multiple
Short arc strengthens the deionization effect of electric arc by metal arc piece, and electric arc becomes smaller and voltage rapidly increases, and makes arc extinction.
As shown in Fig. 1, the arc-chutes of existing breaker are substantially unlimited or half opening-wide state, knot close to spindle end
Structure is made of pedestal, arc-chutes, main shaft, contact chip, mechanism, on pedestal be a narrow slit at contact chip cooperation, moving contact exists
On/off switch function is realized in movement in the narrow slit, and arc extinguishing chamber region is also linked together with main shaft region by the narrow slit, in disjunction
When the high heat that generates and hyperbar can be moved along narrow slit, while bringing into the main shaft region such as charged particle, or take other to
Xiang Zhong generates extreme influence to the breaker service life according to other parts such as be flexible coupling at phase fault phenomenon or scaling loss；Simultaneously for
Electric arc extinguishing be also it is very unfavorable, cause the breaking capacity of breaker to reduce.
Summary of the invention
It is unenclosed construction the purpose of the present invention is to existing arc-extinguishing chamber of circuit breaker, poor sealing performance causes phase
Between short circuit or burn out part, reduce the defect in breaker service life, a kind of arc-extinguishing chamber of circuit breaker sealing structure be provided, high pressure gas is made
Few as far as possible enters spindle end, promotes electric arc to enter in arc-chutes faster and extinguishes, to play protection dynamic/static contact, improves
The purpose of breaker service life.
Technical solution
In order to achieve the above technical purposes, a kind of arc-extinguishing chamber of circuit breaker sealing structure that the present invention designs, it includes dynamic touching
Head, main shaft, mounting bracket and pedestal, mounting bracket fill on the base, and the moving contact, which is mounted on main shaft, to be put around main shaft
It is dynamic, it is characterised in that: the moving contact tail portion is equipped with sealing cover, and sealing cover can play the gap between moving contact tail portion and main shaft
To sealing function, on the main shaft with sealing is equipped at moving contact cooperation, seal closure, seal closure are housed in the mounting bracket
Moving contact top and arc extinguishing region can be separated with sealing collective effect, the main shaft back is equipped with seal convexity, sealing
Protrusion can be in the overall process that moving contact is opened by arc extinguishing region and moving contact tail with sealed groove corresponding on pedestal matching
Portion separates.
Further, the sealing cover is installed on moving contact, and moving contact tail portion is equipped with location hole, on sealing cover with location hole
Corresponding position is equipped with positioning convex platform, and positioning convex platform puts in location hole and realizes that sealing cover is installed on moving contact tail portion, the sealing cover
Moving contact tail portion and arc extinguishing region can be isolated by being equipped with arc sealing.
Further, the seal closure is inserted into the mounting groove of pedestal is limited by mounting bracket.
Further, the seal closure is equipped with gear gas face, and gear gas mask lives moving contact upper end, on the seal closure with main shaft
Corresponding position is equipped with and keeps away a notch.
Further, recessing groove is equipped with mounting bracket locating shaft corresponding position on the seal closure.
Further, the sealing is arc groove, with its place of cooperation is arc convex on moving contact.
Further, the seal convexity is the semi-cylindrical hill stretched out from main shaft back, and sealed groove is and seal convexity
Corresponding semi-circular recesses.
Beneficial effect
A kind of arc-extinguishing chamber of circuit breaker sealing structure provided by the invention makes the entrance spindle end that high pressure gas is few as far as possible, promotees
Enter electric arc faster in arc-chutes and extinguish, charged particle is greatly reduced and enters main shaft region phenomenon, to play protection
Dynamic/static contact improves the purpose of breaker service life.
Detailed description of the invention
Attached drawing 1 is existing arc-extinguishing chamber of circuit breaker sealing structure.
Attached drawing 2 is the structural schematic diagram of the embodiment of the present invention.
Attached drawing 3 is the structural schematic diagram of pedestal in the embodiment of the present invention.
Attached drawing 4 is moving contact installation structure schematic diagram in the embodiment of the present invention.
Attached drawing 5 is the scheme of installation of sealing cover in the embodiment of the present invention.
Attached drawing 6 is moving contact structure schematic diagram in the embodiment of the present invention.
Attached drawing 7 is sealing cover structure schematic diagram in the embodiment of the present invention.
Attached drawing 8 is mounting support structure schematic diagram in the embodiment of the present invention.
Attached drawing 9 is main axle structure schematic diagram in the embodiment of the present invention.
Attached drawing 10 is seal closure structural schematic diagram in the embodiment of the present invention.
Attached drawing 11 is seal closure mounting structure schematic diagram in the embodiment of the present invention.
Attached drawing 12 is that seal closure is not passed through mounting bracket positioning axis structure schematic diagram in the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
Embodiment
As shown in attached drawing 2,3,4 and 6, a kind of arc-extinguishing chamber of circuit breaker sealing structure, it includes moving contact 1, main shaft 2, installation
Bracket 3 and pedestal 4, on pedestal 4, the moving contact 1 is mounted on main shaft 2 to be swung around main shaft 2 mounting bracket 3,
In, 1 tail portion of moving contact is equipped with sealing cover 5, and sealing cover 5 can play sealing to the gap between 1 tail portion of moving contact and main shaft 2
Effect, on the main shaft 2 with sealing 201 is equipped at 1 cooperation of moving contact, seal closure 6, sealing are housed in the mounting bracket 3
Cover 6 and 201 collective effect of sealing can separate 1 top of moving contact and arc extinguishing region, as shown in Fig. 9, the sealing
201 be arc groove, with its place of cooperation is arc convex on moving contact 1.2 back of main shaft is equipped with seal convexity 202, sealing
Protrusion 202 by arc extinguishing region and can be moved with sealed groove 401 corresponding on pedestal 4 matching in the overall process that moving contact is opened
1 tail portion of contact separates, and the seal convexity 202 is the semi-cylindrical hill stretched out from 2 back of main shaft, sealed groove 401 be with it is close
Seal raised 202 corresponding semi-circular recesses.
As shown in attached drawing 5 and 7, the sealing cover 5 is installed on moving contact 1, and 1 tail portion of moving contact is equipped with location hole 101, close
Positioning convex platform 501 is equipped in capping 5 with 101 corresponding position of location hole, positioning convex platform 501 puts in location hole 101 and realizes that sealing cover 5 is solid
Surely it is mounted in 1 tail portion of moving contact, the sealing cover 5, which is equipped with arc sealing 502, can be isolated 1 tail portion of moving contact and arc extinguishing area
Domain.
As shown in attached drawing 8,10 and 11, the seal closure 6 is inserted into the mounting groove of pedestal 4 to be limited by mounting bracket 3.
The seal closure 6 is equipped with gear gas face 601, and gear gas face 601 covers 1 upper end of moving contact, corresponding with main shaft 2 on the seal closure 6
Place, which is equipped with, keeps away a notch 602, recessing groove 603 is equipped with 3 locating shaft corresponding position of mounting bracket on seal closure 6, if mounting bracket 3
When locating shaft does not need guiding through seal closure 6,6 structure of seal closure is then as shown in Fig. 12.
The course of work of the present invention is: after generating electric arc between dynamic/static contact, the indoor gas expansion of arc extinguishing can be made, expansion
Contain many metallic conduction particles etc. in gas, the particle is by the main shaft in the structure, seal closure and contact chip and sealing
Lid stops, and makes charged particle is few as far as possible to enter inside main shaft, prevents alternate breakdown.
A kind of arc-extinguishing chamber of circuit breaker sealing structure provided by the invention makes the entrance spindle end that high pressure gas is few as far as possible, promotees
Enter electric arc faster in arc-chutes and extinguish, charged particle is greatly reduced and enters main shaft region phenomenon, to play protection
Dynamic/static contact improves the purpose of breaker service life.
The present embodiment structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification revealed interior
Hold, so that those skilled in the art understands and reads, is not intended to limit the invention enforceable qualifications, therefore does not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size can be produced not influencing the present invention
Under raw effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Meanwhile cited such as "upper", "lower", "left", "right", " centre ", " clockwise ", the use of " counterclockwise " in this specification
Language is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, the change of relativeness or tune
It is whole, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
Claims (7)
1. a kind of arc-extinguishing chamber of circuit breaker sealing structure, it includes moving contact (1), main shaft (2), mounting bracket (3) and pedestal (4),
Mounting bracket (3) is on pedestal (4), and the moving contact (1), which is mounted on main shaft (2), to be swung around main shaft (2), feature
Be: moving contact (1) tail portion is equipped with sealing cover (5), and sealing cover (5) can be between moving contact (1) tail portion and main shaft (2)
Sealing function is played in gap, is equipped with sealing (201) at moving contact (1) cooperation on the main shaft (2), the mounting bracket
(3) seal closure (6) are housed on, seal closure (6) can separate moving contact (1) top and arc extinguishing region, main shaft (2) back
Equipped with seal convexity (202), seal convexity (202) can be in moving contact with sealed groove (401) corresponding on pedestal (4) matching
Arc extinguishing region and moving contact (1) tail portion are separated in the overall process of opening.
2. a kind of arc-extinguishing chamber of circuit breaker sealing structure as described in claim 1, it is characterised in that: the sealing cover (5) clamps
On moving contact (1), moving contact (1) tail portion is equipped with location hole (101), is equipped on sealing cover (5) with location hole (101) corresponding position
Positioning convex platform (501), positioning convex platform (501) put in location hole (101) and realize that sealing cover (5) are installed on moving contact (1) tail portion,
The sealing cover (5), which is equipped with arc sealing (502), can be isolated moving contact (1) tail portion and arc extinguishing region.
3. a kind of arc-extinguishing chamber of circuit breaker sealing structure as described in claim 1, it is characterised in that: the seal closure (6) is mounted in
It is limited in the mounting groove of pedestal (4) by mounting bracket (3).
4. a kind of arc-extinguishing chamber of circuit breaker sealing structure as described in claim 1, it is characterised in that: set on the seal closure (6)
There is gear gas face (601), gear gas face (601) covers moving contact (1) upper end, is equipped on the seal closure (6) with main shaft (2) corresponding position
Keep away a notch (602).
5. a kind of arc-extinguishing chamber of circuit breaker sealing structure as described in claim 1, it is characterised in that: on the seal closure (6) with
Mounting bracket (3) locating shaft corresponding position is equipped with recessing groove (603).
6. a kind of arc-extinguishing chamber of circuit breaker sealing structure as described in claim 1, it is characterised in that: the sealing (201) is
Arc groove with its place of cooperation is arc convex on moving contact (1).
7. a kind of arc-extinguishing chamber of circuit breaker sealing structure as described in claim 1, it is characterised in that: the seal convexity (202)
For the semi-cylindrical hill stretched out from main shaft (2) back, sealed groove (401) is that semicircle corresponding with seal convexity (202) is recessed
Slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610082533.8A CN107045967B (en) | 2016-02-05 | 2016-02-05 | A kind of arc-extinguishing chamber of circuit breaker sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610082533.8A CN107045967B (en) | 2016-02-05 | 2016-02-05 | A kind of arc-extinguishing chamber of circuit breaker sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107045967A CN107045967A (en) | 2017-08-15 |
| CN107045967B true CN107045967B (en) | 2019-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610082533.8A Active CN107045967B (en) | 2016-02-05 | 2016-02-05 | A kind of arc-extinguishing chamber of circuit breaker sealing structure |
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| Country | Link |
|---|---|
| CN (1) | CN107045967B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117393395A (en) * | 2022-07-04 | 2024-01-12 | 上海正泰智能科技有限公司 | Arc extinguishing mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958095A (en) * | 1974-10-21 | 1976-05-18 | Allen-Bradley Company | Disconnect switch |
| CN201066667Y (en) * | 2007-05-29 | 2008-05-28 | 浙江正泰电器股份有限公司 | A contactor system for plastic breaker |
| CN102427008A (en) * | 2011-11-08 | 2012-04-25 | 江苏辉能电气有限公司 | Arc-extinguishing device for plastic shell low-voltage circuit breaker |
| CN205452218U (en) * | 2016-02-05 | 2016-08-10 | 上海良信电器股份有限公司 | Circuit breaker explosion chamber seal structure |
-
2016
- 2016-02-05 CN CN201610082533.8A patent/CN107045967B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958095A (en) * | 1974-10-21 | 1976-05-18 | Allen-Bradley Company | Disconnect switch |
| CN201066667Y (en) * | 2007-05-29 | 2008-05-28 | 浙江正泰电器股份有限公司 | A contactor system for plastic breaker |
| CN102427008A (en) * | 2011-11-08 | 2012-04-25 | 江苏辉能电气有限公司 | Arc-extinguishing device for plastic shell low-voltage circuit breaker |
| CN205452218U (en) * | 2016-02-05 | 2016-08-10 | 上海良信电器股份有限公司 | Circuit breaker explosion chamber seal structure |
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| Publication number | Publication date |
|---|---|
| CN107045967A (en) | 2017-08-15 |
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