CN106558463A - A kind of contact of breaker protection device - Google Patents
A kind of contact of breaker protection device Download PDFInfo
- Publication number
- CN106558463A CN106558463A CN201510642312.7A CN201510642312A CN106558463A CN 106558463 A CN106558463 A CN 106558463A CN 201510642312 A CN201510642312 A CN 201510642312A CN 106558463 A CN106558463 A CN 106558463A
- Authority
- CN
- China
- Prior art keywords
- arc
- cut
- contact
- moving contact
- arc cover
- 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
Links
- 238000010891 electric arc Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 13
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 description 9
- 230000004888 barrier function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 101100008046 Caenorhabditis elegans cut-2 gene Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
-
- 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
- H01H9/32—Insulating body insertable between contacts
-
- 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
- H01H73/04—Contacts
-
- 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 contact of breaker protection device, it includes moving contact (1), it is characterised in that：Mount on the moving contact (1) and cut arc cover (2), cut arc cover (2) and can rotate and the electric arc in rotation process during cut-out breaker disjunction.The present invention makes arc extinguishing speed doublings according to the movement characteristic of moving contact on/off switch, cleverly using cutting the arc cover gravity of itself, and the electric arc time of staying is extremely short, and electric arc one is produced, you can cut the cut-out of arc cover, while cutting arc cover is close to the cutting of moving contact arc root, avoids high-temperature region；Complete to cut arc and protection, substantially reduce expected arc energy, effectively improve recovery voltage, reduce contact and burn degree, increase disjunction number of times, the specified operating index of improving product.
Description
Technical field
The invention belongs to low voltage electrical apparatus technology field, is exactly specifically to be related to a kind of contact of breaker protection device,
Contact can effectively be reduced to burn degree, the purpose to contact protection is realized.
Background technology
Breaker is the pith of electrical power distribution apparatus, is mainly used in industrial low-voltage power system, for connecting
And the electric current and protection circuit and power-supply device in disjunction mains-power circuit is from overload, under-voltage, short circuit, list
The mutually harm of the failure such as ground connection.
Breaker is divided into primary cut-out and low-voltage circuit breaker by its use range.Low-voltage circuit breaker is also known as automatic
Switch, is commonly called as " air switch " and also refers to low-voltage circuit breaker, and it is that a kind of existing hand switch is acted on, and energy
Automatically carry out the electrical equipment of decompression, under-voltage, overload and short-circuit protection.It can be used to distribute electric energy, infrequently
Ground starts asynchronous motor, power circuit and motor etc. is carried out and is protected, when they occur serious overload
Or during the failure such as short-circuit and under-voltage can automatic shutdown circuit, its function equivalent to Fuse switch with owe excessively
The combination of electrothermal relay etc., and it is latter in disjunction fault current as need not change parts, obtain
It is widely applied.
When breaker is in running, when detecting short circuit current, controller can send sub-gate signal, hold
Row mechanism action makes operating mechanism separating brake.Due to short circuit current greatly, produced arc energy is also very big,
Extinguish electric arc and ensure that electric arc is not restriked after zero passage phenomenon in order to quick, must just make,
Static contact is quickly disconnected from closing position, reaches open position.
During breaker open operation, electric arc between dynamic/static contact, can be produced, due to the hot properties of electric arc,
The length of arc time determines the degree that dynamic/static contact is burnt, and can directly affect the interrupting performance of product,
At present conventional arc extinguishing scheme has magnetic blow-out, air-blowing and narrow slit etc., mainly by elongating arc, cooling electric arc,
The principles such as serial arc allow electric arc to be transferred in arc extinguishing room from contact as early as possible to extinguish electric arc.Above arc extinguishing scheme
At lower operating voltage (below AC400V), effect is more apparent, but in high voltage, often goes out
Now continue arcing, the phenomenon restriked after arc extinction again.In order to solve the technology of arc reignition during high voltage
A difficult problem, what is taken at present is the time of staying scheme for effectively reducing electric arc on contact, but the space because of product and
The restriction of intensity, and to extinguish time for being actually needed of electric arc extremely short, is Millisecond, therefore, it is existing to go out
Arc scheme cannot all avoid the defect burnt by contact, Chinese patent CN1209776 from disclosing a kind of breaker
Forced extinguisher, sets up a flash barrier in breaker, and the flash barrier is located at dynamic/static contact when closing a floodgate
Lower section, with block connecting rod connect flash barrier lower section and moving contact top, and the connecting rod also with constraint
The guide-bar mechanism connection of the flash barrier direction of motion, the arc-control device are moved using guiding mechanism control flash barrier,
Increased run duration, it is impossible to realize requirement of the arc extinguishing in Millisecond, still result in high voltage and restrike
Phenomenon burns contact.
The content of the invention
The purpose of the present invention is aiming at existing various contact protection schemes and cannot avoid electric arc in high pressure conditions
Restrike the technological deficiency of contact of burning, there is provided a kind of contact of breaker protection device, according to moving contact on/off switch
Movement characteristic, be automatically performed the cut-out to electric arc, realize the protection purpose to contact of breaker.
Technical scheme
In order to realize above-mentioned technical purpose, a kind of contact of breaker protection device of present invention design, it includes
Moving contact, it is characterised in that：Mount on the moving contact and cut arc cover, cut arc cover and can rotate and rotate
During cut off breaker disjunction when electric arc.
Further, installation axle is provided with the moving contact side, cut the axle that arc cover termination is mounted on installation axle
On end, moving contact is arranged on moving contact bearing, and cutting arc cover can swing back and forth around installation axle, cuts arc cover pendulum
Dynamic two-end-point is limited by moving contact bearing.
Further, described to cut arc cover and cut arc cover for U-shaped, U-shaped is cut arc cover two ends and is mounted on the shaft end of installation axle.
Further, the arc of cutting covers on the step that two-end-point position in swing process rests on moving contact bearing respectively
On.
Further, it is described to cut arc cover for insulating part.
Beneficial effect
A kind of contact of breaker protection device that the present invention is provided, according to the movement characteristic of moving contact on/off switch,
Cleverly arc extinguishing speed doublings are made using cutting the arc cover gravity of itself, the electric arc time of staying is extremely short, and electric arc one is produced
It is raw, you can be cut the cut-out of arc cover, while cutting arc cover is close to the cutting of moving contact arc root, avoid high-temperature region；Complete
Arc and protection are cut, expected arc energy is substantially reduced, recovery voltage is effectively improved, contact are reduced and is burnt degree,
Increase disjunction number of times, the specified operating index of improving product.
Description of the drawings
Accompanying drawing 1 is the structural representation of the embodiment of the present invention.
Accompanying drawing 2 is that moving contact separating brake starts view in the embodiment of the present invention.
Accompanying drawing 3 is moving contact separating brake process status schematic diagram in the embodiment of the present invention.
Accompanying drawing 4 is moving contact separating brake completion status schematic diagram in the embodiment of the present invention.
Accompanying drawing 5 is that switch on of moving contact starts view in the embodiment of the present invention.
Accompanying drawing 6 is switch on of moving contact process status schematic diagram in the embodiment of the present invention.
Accompanying drawing 7 is switch on of moving contact completion status schematic diagram in the embodiment of the present invention.
Accompanying drawing 8 is the structural representation that arc cover is cut 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 Figure 1, a kind of contact of breaker protection device, it includes moving contact 1, the moving contact 1
On mounted and cut arc cover 2, cut electric arc when arc cover 2 can be rotated and cut off breaker disjunction in rotation process.
The moving contact is provided with installation axle 3 on 1 side, cuts the shaft end that 2 termination of arc cover is mounted on installation axle 3
On, moving contact 1 is arranged on moving contact bearing 4, and cutting arc cover 2 can swing back and forth around installation axle 3, cut
Arc cover 2 swings two-end-point and is limited by moving contact bearing 4.
As shown in Figure 8, described to cut arc cover 2 and cut arc cover for U-shaped, U-shaped is cut 2 two ends of arc cover and is mounted on installation
On the shaft end of axle 3.
The two-end-point position in swing process of arc cover 2 of cutting is rested on the step of moving contact bearing 4 respectively.
It is described to cut arc cover 2 for insulating part.
As shown in accompanying drawing 2,3 and 4, when sub-switching operation is carried out, when moving contact 1 just starts disjunction, move
Contact 1 is pulled open at a high speed, is cut arc cover 2 and is freely connected with moving contact 1 by installation axle 3, cuts arc cover 2 sharp
Moved to the direction for covering moving contact 1 with own wt, by rotation, reach and stop on moving contact bearing 4,
Continue motion together with moving contact 1, in this process, start to produce electricity between moving contact 1 and static contact 5
Arc, cut arc cover 2 by rotate it is close to the bottom of moving contact bearing 4, in approach process, from arc root
Electric arc is gradually switched off, when cutting arc cover 2 and contacting with moving contact bearing 4, electric arc is fully shut off；In separating brake
The rear stage of motion, moving contact 1 reduce speed now, and until stopping, cutting arc cover 2 and can swing several times, be parked in dynamic
The bottom of contact support 4, sub-switching operation complete.
As shown in accompanying drawing 5,6 and 7, in closing operation, moving contact 1 is quickly rotated to static contact 5, this
When cut arc cover 2 and be parked in 4 bottom of moving contact bearing, cutting arc cover 2 can be because of the centrifugal force for moving, to moving contact
The top of seat 4 rotates, and the spacing top in moving contact bearing 3, moves together with moving contact 1, when dynamic
Contact 1 is contacted with static contact 5, and speed is reduced, until stopping, the process, cutting arc cover 2 will be to static contact 5
Motion, after encountering static contact 5, stop motion completes closing operation.
A kind of contact of breaker protection device that the present invention is provided, according to the movement characteristic of moving contact on/off switch, ingeniously
Wonderful utilization is cut the arc cover gravity of itself and makes arc extinguishing speed doublings, and the electric arc time of staying is extremely short, and electric arc one is produced,
The cut-out of arc cover can be cut, while cutting arc cover is close to the cutting of moving contact arc root, high-temperature region is avoided；Complete to cut arc
And protection, expected arc energy is substantially reduced, recovery voltage is effectively improved, contact is reduced and is burnt degree, increase
Bonus point is broken number of times, the specified operating index of improving product.Replacement of products cost can be reduced, maintenance cost is reduced.
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 understands and reads, 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 effect that can be generated of the invention and the purpose that can be reached is not affected, still all should fall
In the range of disclosed technology contents are obtained and can be covered.Meanwhile, in this specification it is cited as
" on ", D score, "left", "right", " centre ", " clockwise ", the term of " counterclockwise " etc., also only
Understanding for ease of narration, and be not used to limit enforceable scope of the invention, the change of its relativeness or
Adjustment, under without essence change technology contents, when being also considered as enforceable category of the invention.
Claims (5)
1. a kind of contact of breaker protection device, it includes moving contact (1), it is characterised in that：It is described dynamic tactile
Mount on head (1) and cut arc cover (2), cut arc cover (2) and can rotate and breaker point is cut off in rotation process
Electric arc when disconnected.
2. a kind of contact of breaker protection device as claimed in claim 1, it is characterised in that：It is described dynamic
Installation axle (3) is provided with contact (1) side, arc cover (2) termination is cut and is mounted on the shaft end of installation axle (3),
On moving contact bearing (4), cutting arc cover (2) can swing back and forth moving contact (1) around installation axle (3), cut
Arc cover (2) swings two-end-point and is limited by moving contact bearing (4).
3. a kind of contact of breaker protection device as claimed in claim 2, it is characterised in that：It is described to cut
Arc cover (2) cuts arc cover for U-shaped, and U-shaped is cut arc cover (2) two ends and is mounted on the shaft end of installation axle (3).
4. a kind of contact of breaker protection device as claimed in claim 2, it is characterised in that：It is described to cut
Arc cover (2) two-end-point position in swing process is rested on the step of moving contact bearing (4) respectively.
5. a kind of contact of breaker protection device as claimed in claim 1, it is characterised in that：It is described to cut
Arc cover (2) is insulating part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510642312.7A CN106558463B (en) | 2015-09-30 | 2015-09-30 | A kind of contact of breaker protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510642312.7A CN106558463B (en) | 2015-09-30 | 2015-09-30 | A kind of contact of breaker protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106558463A true CN106558463A (en) | 2017-04-05 |
| CN106558463B CN106558463B (en) | 2019-06-14 |
Family
ID=58418229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510642312.7A Active CN106558463B (en) | 2015-09-30 | 2015-09-30 | A kind of contact of breaker protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106558463B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987208A (en) * | 2017-06-05 | 2018-12-11 | 周思雨 | A kind of miniature circuit breaker and its arc-control device |
| CN108987139A (en) * | 2017-06-01 | 2018-12-11 | 泰科电子(深圳)有限公司 | Electrical contact system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065546A (en) * | 1991-04-01 | 1992-10-21 | 魏祥华 | Arc cutting method by shearing |
| CN1457065A (en) * | 2003-03-12 | 2003-11-19 | 北京人民电器厂 | Circuit breaker forced extinguisher |
| CN202076163U (en) * | 2011-04-18 | 2011-12-14 | 尹明志 | Miniature circuit breaker |
| CN202616089U (en) * | 2012-05-16 | 2012-12-19 | 安文胜 | An electric switch using a flame-retarding and insulating separating plate as a breaking medium |
| CN203644714U (en) * | 2013-12-05 | 2014-06-11 | 上海良信电器股份有限公司 | Dynamic contact head structure of breaker |
| CN205092208U (en) * | 2015-09-30 | 2016-03-16 | 上海良信电器股份有限公司 | Circuit breaker contact protection device |
-
2015
- 2015-09-30 CN CN201510642312.7A patent/CN106558463B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065546A (en) * | 1991-04-01 | 1992-10-21 | 魏祥华 | Arc cutting method by shearing |
| CN1457065A (en) * | 2003-03-12 | 2003-11-19 | 北京人民电器厂 | Circuit breaker forced extinguisher |
| CN202076163U (en) * | 2011-04-18 | 2011-12-14 | 尹明志 | Miniature circuit breaker |
| CN202616089U (en) * | 2012-05-16 | 2012-12-19 | 安文胜 | An electric switch using a flame-retarding and insulating separating plate as a breaking medium |
| CN203644714U (en) * | 2013-12-05 | 2014-06-11 | 上海良信电器股份有限公司 | Dynamic contact head structure of breaker |
| CN205092208U (en) * | 2015-09-30 | 2016-03-16 | 上海良信电器股份有限公司 | Circuit breaker contact protection device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987139A (en) * | 2017-06-01 | 2018-12-11 | 泰科电子(深圳)有限公司 | Electrical contact system |
| CN108987139B (en) * | 2017-06-01 | 2024-02-02 | 泰科电子(深圳)有限公司 | Electrical contact system |
| CN108987208A (en) * | 2017-06-05 | 2018-12-11 | 周思雨 | A kind of miniature circuit breaker and its arc-control device |
| CN108987208B (en) * | 2017-06-05 | 2024-04-02 | 周思雨 | Miniature circuit breaker and arc extinguishing device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106558463B (en) | 2019-06-14 |
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