CN107045967A - 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
- CN107045967A CN107045967A CN201610082533.8A CN201610082533A CN107045967A CN 107045967 A CN107045967 A CN 107045967A CN 201610082533 A CN201610082533 A CN 201610082533A CN 107045967 A CN107045967 A CN 107045967A
- Authority
- CN
- China
- Prior art keywords
- arc
- moving contact
- main shaft
- closure
- circuit breaker
- 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.)
- Granted
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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
Landscapes
- 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) is arranged on main shaft (2) and can swung around main shaft (2), it is characterised in that：Moving contact (1) afterbody is equipped with closure (5), closure (5) can play sealing function to the space between moving contact (1) afterbody and main shaft (2), with being provided with sealing (201) at moving contact (1) cooperation on the main shaft (2), seal closure (6) is housed, seal closure (6) and sealing (201) collective effect can separate moving contact (1) top and arc extinguishing region on the mounting bracket (3).The present invention makes the entrance spindle end that gases at high pressure are tried one's best few, promotes electric arc to enter faster in arc-chutes and extinguish, and charged particle is greatly reduced into main shaft region phenomenon, so as 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, more particularly to a kind of arc-extinguishing chamber of circuit breaker sealing structure makes
The entrance spindle end that gases at high pressure are tried one's best few, promotes electric arc to enter faster in arc-chutes and extinguish, so as to rise
To protection dynamic/static contact, the purpose of breaker service life is improved
Background technology
Breaker is the pith in electrical power distribution apparatus, is mainly used in industrial low-voltage power system, for connecing
Logical and electric current and protection circuit and power-supply device in disjunction mains-power circuit from overload, under-voltage, short circuit,
The harm of the failures such as single-phase earthing.
The function that breaker carries out disjunction to overload or short circuit current flow mainly passes through going out in breaker
What arc chamber was completed.When the electric current that broken down in circuit, and current value exceedes the setting protection of intelligent controller
During scope, driving operating mechanism action makes the dynamic and static contact of breaker disconnect rapidly, now dynamic and static
Voltage between contact causes air dielectric electric discharge to produce high-temperature electric arc.Electric arc causes to go out in combustion
Air themperature in arc device steeply rises to accelerate air ionization.On the other hand, electric arc is in arc-chutes
Magnetic field and hydrodynamic effect promotion under, multiple short arcs are separated into by multiple arc grid, by metal arc
Piece strengthens the deionization effect of electric arc, and electric arc diminishes and voltage is rapidly raised, and makes arc extinction.
As shown in Figure 1, the arc-chutes of existing breaker are substantially close to spindle end and opened wide or half open state
State, its structure is made up of pedestal, arc-chutes, main shaft, contact chip, mechanism, is coordinated on pedestal with contact chip
Locate as a narrow slit, moving contact moves in the narrow slit and realizes on/off switch function, arc extinguishing chamber region and main shaft area
Domain is also linked together by the narrow slit, and the high heat and hyperbar produced in disjunction can be moved along narrow slit,
Bring into the main shaft region such as charged particle simultaneously, or take in other phases, according into phase fault phenomenon or scaling loss
Other parts such as be flexible coupling, and extreme influence is produced to the breaker life-span；Extinguishing simultaneously for electric arc is also very
Unfavorable, causing the breaking capacity of breaker reduces.
The content of the invention
The purpose of the present invention is unenclosed construction aiming at existing arc-extinguishing chamber of circuit breaker, poor sealing performance,
Cause phase fault or burn out part, there is provided a kind of arc-extinguishing chamber of circuit breaker is close for the defect in reduction breaker life-span
Seal structure, the entrance spindle end for making gases at high pressure try one's best few promotes electric arc to enter faster in arc-chutes and put out
Go out, so as to play protection dynamic/static contact, improve the purpose of breaker service life.
Technical scheme
In order to realize above-mentioned technical purpose, a kind of arc-extinguishing chamber of circuit breaker sealing structure that the present invention is designed, its bag
Moving contact, main shaft, mounting bracket and pedestal are included, mounting bracket is on pedestal, and the moving contact is arranged on
Can be around spindle swing on main shaft, it is characterised in that：The moving contact afterbody is equipped with closure, closure energy
It is enough space between moving contact afterbody and main shaft to be played on sealing function, the main shaft with being set at moving contact cooperation
Have and seal closure is housed in sealing, the mounting bracket, seal closure and sealing collective effect can be touched dynamic
Head top and arc extinguishing region separate, the main shaft back be provided with seal convexity, seal convexity with corresponding pedestal
Sealed groove matching can moving contact open overall process in arc extinguishing region and moving contact afterbody be separated.
Further, the closure is installed on moving contact, and moving contact afterbody is provided with positioning hole, closure
Positioning boss is provided with positioning hole corresponding position, positioning boss puts in positioning hole and realizes that closure is installed on dynamic touch
Head-tail, the closure can isolate moving contact afterbody and arc extinguishing region provided with arc sealing.
Further, the seal closure is inserted into spacing by mounting bracket in the mounting groove of pedestal.
Further, the seal closure is provided with gear gas face, and gear gas mask lives moving contact upper end, the seal closure
Upper and main shaft corresponding position is provided with and keeps away a breach.
Further, it is provided with slot to make way 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 be from main shaft back stretch out semi-cylindrical hill, sealed groove be with it is close
Seal raised corresponding semi-circular recesses.
Beneficial effect
A kind of arc-extinguishing chamber of circuit breaker sealing structure that the present invention is provided, the entrance main shaft for making gases at high pressure try one's best few
End, promotes electric arc to enter faster in arc-chutes and extinguish, and charged particle is greatly reduced existing into main shaft region
As so as to play protection dynamic/static contact, improving the purpose of breaker service life.
Brief description of the drawings
Accompanying drawing 1 is existing arc-extinguishing chamber of circuit breaker sealing structure.
Accompanying drawing 2 is the structural representation of the embodiment of the present invention.
Accompanying drawing 3 is the structural representation of pedestal in the embodiment of the present invention.
Accompanying drawing 4 is moving contact installation structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 5 is the scheme of installation of closure in the embodiment of the present invention.
Accompanying drawing 6 is moving contact structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 7 is sealing cover structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 8 is mounting support structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 9 is main axle structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 10 is seal closure structural representation in the embodiment of the present invention.
Accompanying drawing 11 is seal closure mounting structure schematic diagram in the embodiment of the present invention.
Accompanying drawing 12 is that seal closure is not passed through mounting bracket positioning axis structure schematic diagram in the embodiment of the present invention.
Embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
Embodiment
As shown in accompanying 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, mounting bracket 3 and pedestal 4, mounting bracket 3 is on pedestal 4, and the moving contact 1 is arranged on
It can be swung on main shaft 2 around main shaft 2, wherein, the afterbody of moving contact 1 is equipped with closure 5, closure 5
Space between the afterbody of moving contact 1 and main shaft 2 can be played on sealing function, the main shaft 2 with moving contact 1
It is provided with cooperation in sealing 201, the mounting bracket 3 and seal closure 6, seal closure 6 and sealing 201 is housed
Collective effect can separate the top of moving contact 1 and arc extinguishing region, as shown in Figure 9, the sealing 201
With its place of cooperation it is arc convex on moving contact 1 for arc groove.The back of main shaft 2 is convex provided with sealing
202 are played, seal convexity 202 can be opened with the matching of sealed groove 401 on corresponding pedestal 4 in moving contact
Arc extinguishing region and the afterbody of moving contact 1 are separated in overall process, the seal convexity 202 is from the back of main shaft 2
The semi-cylindrical hill of stretching, sealed groove 401 be and the corresponding semi-circular recesses of seal convexity 202.
As shown in accompanying drawing 5 and 7, the closure 5 is installed on moving contact 1, and the afterbody of moving contact 1 is provided with
On positioning hole 101, closure 5 positioning boss 501, positioning boss 501 are provided with the corresponding position of positioning hole 101
Put in positioning hole 101 and realize that closure 5 is installed on the afterbody of moving contact 1, the closure 5 is provided with arc
Shape sealing 502 can isolate the afterbody of moving contact 1 and arc extinguishing region.
As shown in accompanying drawing 8,10 and 11, the seal closure 6 is inserted into the mounting groove of pedestal 4 by installing
Support 3 is spacing.The seal closure 6 covers the upper end of moving contact 1 provided with gear gas face 601, gear gas face 601,
It is fixed with mounting bracket 3 on a breach 602, seal closure 6 provided with keeping away with the corresponding position of main shaft 2 on the seal closure 6
Position axle corresponding position is provided with slot to make way 603, if the locating shaft of mounting bracket 3 does not need guiding through seal closure 6, sealing
Cover 6 structures then as shown in Figure 12.
The course of work of the present invention is：After electric arc is produced between dynamic/static contact, the gas expansion in arc-chutes can be made,
Containing many metallic conduction particles etc. in the gas of expansion, the particle is by the main shaft in the structure, seal closure
Stop with contact chip and closure, make inside the entrance main shaft that charged particle tries one's best few, prevent alternate puncture.
A kind of arc-extinguishing chamber of circuit breaker sealing structure that the present invention is provided, the entrance main shaft for making gases at high pressure try one's best few
End, promotes electric arc to enter faster in arc-chutes and extinguish, and charged particle is greatly reduced existing into main shaft region
As so as to play protection dynamic/static contact, improving the purpose of breaker service life.
Structure, ratio, size depicted in the present embodiment institute accompanying drawings etc., only to coordinate specification institute
The content of announcement, so that those skilled in the art is understood with reading, being not limited to the present invention can implement
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or
The adjustment of size, in the case where not influenceing effect of the invention that can be generated and the purpose that can reach, all should still fall
In the range of disclosed technology contents are obtained and can covered.Meanwhile, in this specification it is cited as
The term of " on ", " under ", "left", "right", " centre ", " clockwise ", " counterclockwise " etc., be also only
It is easy to understanding for narration, and is not used to limit enforceable scope of the invention, the change of its relativeness or tune
It is whole, under without essence change technology contents, when being also considered as enforceable category of the 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)
With pedestal (4), mounting bracket (3) is on the pedestal (4), and the moving contact (1) is arranged on main shaft (2) can be around
Main shaft (2) is swung, it is characterised in that：Moving contact (1) afterbody is equipped with closure (5), and closure (5) can
Space between moving contact (1) afterbody and main shaft (2) is played on sealing function, the main shaft (2) with moving contact (1)
Sealing (201) is provided with cooperation, seal closure (6) is housed on the mounting bracket (3), seal closure (6) can be by
Moving contact (1) top and arc extinguishing region are separated, and main shaft (2) back is provided with seal convexity (202), are sealed convex
(202) are played to incite somebody to action in the overall process that moving contact is opened with sealed groove (401) matching on corresponding pedestal (4)
Arc extinguishing region and moving contact (1) afterbody are separated.
2. a kind of arc-extinguishing chamber of circuit breaker sealing structure as claimed in claim 1, it is characterised in that：It is described
Closure (5) is installed on moving contact (1), and moving contact (1) afterbody is provided with positioning hole (101), on closure (5) with
Positioning hole (101) corresponding position be provided with positioning boss (501), positioning boss (501) put in positioning hole (101) realize it is close
Capping (5) is installed on moving contact (1) afterbody, and the closure (5) can be every provided with arc sealing (502)
From moving contact (1) afterbody and arc extinguishing region.
3. a kind of arc-extinguishing chamber of circuit breaker sealing structure as claimed in claim 1, it is characterised in that：It is described
Seal closure (6) is spacing by mounting bracket (3) in the mounting groove of pedestal (4).
4. a kind of arc-extinguishing chamber of circuit breaker sealing structure as claimed in claim 1, it is characterised in that：It is described
Seal closure (6) covers moving contact (1) upper end, the seal closure (6) provided with gear gas face (601), gear gas face (601)
Upper and main shaft (2) corresponding position is provided with and keeps away a breach (602).
5. a kind of arc-extinguishing chamber of circuit breaker sealing structure as claimed in claim 1, it is characterised in that：It is described
On seal closure (6) slot to make way (603) is provided with mounting bracket (3) locating shaft corresponding position.
6. a kind of arc-extinguishing chamber of circuit breaker sealing structure as claimed in claim 1, it is characterised in that：It is described
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 claimed in claim 1, it is characterised in that：It is described
Seal convexity (202) is the semi-cylindrical hill stretched out from main shaft (2) back, and sealed groove (401) is with sealing convex
Play (202) corresponding semi-circular recesses.
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 true CN107045967A (en) | 2017-08-15 |
| CN107045967B CN107045967B (en) | 2019-08-20 |
Family
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Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN107045967B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007845A1 (en) * | 2022-07-04 | 2024-01-11 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007845A1 (en) * | 2022-07-04 | 2024-01-11 | 上海正泰智能科技有限公司 | Arc extinguishing mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107045967B (en) | 2019-08-20 |
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