CN203553076U - Breaker arc extinguishing apparatus - Google Patents
Breaker arc extinguishing apparatus Download PDFInfo
- Publication number
- CN203553076U CN203553076U CN201320780443.8U CN201320780443U CN203553076U CN 203553076 U CN203553076 U CN 203553076U CN 201320780443 U CN201320780443 U CN 201320780443U CN 203553076 U CN203553076 U CN 203553076U
- Authority
- CN
- China
- Prior art keywords
- arc
- circuit breaker
- gear
- baffle plate
- suppressing device
- 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.)
- Expired - Lifetime
Links
- 230000003068 static effect Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000010891 electric arc Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 5
- 239000002923 metal particle Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
Images
Abstract
The utility model discloses a breaker arc extinguishing apparatus, comprising an arc way (7) located among the moving and static contacts (1,2) and an arc extinguish chamber (6) of a breaker, and baffle plates (3) respectively connecting to two sides of the arc way. The two baffle plates respectively possesses an arc part (4)extending above the contact points of the moving and static contacts (1,2) to prevent the arc free steam generated by the moving and static contacts (1,2) from flowing to the operation mechanism of the breaker. The arc parts can reflect the arc free steam flowing to the operating mechanism, so as to block the arc free steam containing metal particles from entering the operation mechanism, to prevent the metal particles from splashing into the operation mechanism, and to avoid arc restriking between the moving and static contacts, thereby raising arc extinguishing and breaking capabilities of the breaker.
Description
Technical field
The utility model relates to breaker technical field, particularly, relates to a kind of arc leading and suppressing device of circuit breaker.
Background technology
In order to ensure user's self Electrical Safety, circuit breaker all can be installed conventionally in electric power system as protection component.Be known that; circuit breaker is in breaking course; between moving contact and fixed contact, can produce electric arc; because electric arc has electric conductivity; if can not extinguish in time; will directly affect the current limiting capacity of circuit breaker and reduce breaking capacity, and then affecting useful life and the even crisis personal safety of circuit breaker.Therefore,, in order to ensure Electrical Safety, at circuit breaker, adopt arc quenching system by the arc extinction producing.
Existing arc extinguishing system of circuit breaker generally all adopts grid sheet short arc principle, the magnetic field that relies on contact galvanic circle to produce is ordered about electric arc and is entered arc control device, and then extinguish arcs, because electric arc afterwards could be by arc extinguishing by being moved into arc control device between dynamic/static contact, therefore, for electric arc can be incorporated in arc control device rapidly, conventionally between dynamic/static contact and arc control device, be connected with Pao Hu road, simultaneously, for further pilot arc moves towards arc control device, conventionally the both sides in Pao Hu road are provided with the baffle plate being made by gas exhausted material, like this, baffle plate produces gas under the calcination of electric arc, in cooling electric arc, form strong air-blowing, further promoting electric arc moves towards arc control device.
But the applicant finds in practice, although the gas that baffle plate produces can drive electric arc to move towards arc control device effectively, but also there is certain defect, be that portion gas also drives the free steam of electric arc of part to form the air-flow towards dynamic/static contact motion simultaneously, and the opposite side of dynamic/static contact is the operating mechanism of circuit breaker, metallic in this air-flow will be ejected in operating mechanism, affect the action message of operating mechanism, in addition, the free steam of metal in dynamic/static contact region is under the effect of this air-flow, can not dissipate in time, thereby cause the dielectric media between dynamic/static contact breakdown, cause arc reignition, and this phenomenon need to be avoided.
Utility model content
Problem to be solved in the utility model is the forced extinguisher complex structure of existing circuit breaker and installs the high technical problem of inner arc insulating apparatus cost of manufacture, thereby provide a kind of simple in structure, cost is low, the arc leading and suppressing device of the circuit breaker that arc quenching effect is good simultaneously.
To achieve these goals, the utility model provides a kind of arc leading and suppressing device of circuit breaker, comprise Pao Hu road between the dynamic and static contact of circuit breaker and arc control device, and the baffle plate that is connected to both sides, Pao Hu road, two baffle plates have respectively and extend to dynamic and static contact point top, in case the gear arc portion of the free steam flow circuit breaker operation mechanism of electric arc that stop, fixed contact produce.
Each gear arc portion extends but is not contacted with moving contact towards moving contact, and the gap length between gear arc portion and moving contact is limited not affect the action of moving contact.
The end face of each gear arc portion extends towards moving contact, to form the arc gear cambered surface towards Pao Hu road.
The end face of each gear arc portion turns to and is bent downwardly when extending near moving contact, to form the gear cambered surface of semicircular arc.
End face of each gear arc portion extends towards moving contact, to form perpendicular to baffle plate or to favour the gear cambered surface of baffle plate.
Gear arc portion is removably connected with baffle plate.
On baffle plate, be formed with draw-in groove, in gear arc portion, there is the Ka Tai coordinating with described draw-in groove.
Gear arc portion and baffle plate are one-body molded.
Baffle plate can be one-body molded on Shell of circuit breaker; Or baffle plate can removably be connected with Shell of circuit breaker.
Baffle plate and/or the gear arc portion parts for being made by gas exhausted material.
Technique scheme of the present utility model compared with prior art, has the following advantages:
The arc leading and suppressing device of circuit breaker of the present utility model, moving of its circuit breaker, between fixed contact and arc control device, be provided with Pao Hu road, the both sides in Pao Hu road are connected with respectively baffle plate, two baffle plates have respectively extend to moving, fixed contact contact point top, in case stop, the gear arc portion of the free steam flow circuit breaker operation mechanism of electric arc that fixed contact produces, this gear arc portion can stop that the gas that electric arc calcination produces moves to operating mechanism direction, simultaneously, the inner surface of gear arc portion can produce reflection to air-flow, make the air-flow counter motion of originally moving towards operating mechanism direction, increase the air pressure of voltage contact area, to further cooling and promotion of electric arc, accelerate electric arc and enter arc control device, improve back commutation and shorten arcing time of electric arc, improve the arc extinction performance of circuit breaker.
Accompanying drawing explanation
For the content of utility model is more easily expressly understood, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein,
Fig. 1 represents the structural representation of the arc leading and suppressing device of the circuit breaker that the utility model embodiment provides;
Fig. 2 represents the gear arc portion of baffle plate of arc leading and suppressing device of circuit breaker and the three-dimensional structure diagram of dynamic/static contact;
The end view of the structure that Fig. 3 presentation graphs 2 shows;
Fig. 4-Fig. 7 represents other multi-form structural representations of gear cambered surface of the gear arc portion of baffle plate;
Fig. 8 represents a kind of air-flow reflection schematic diagram of gear arc portion of the arc leading and suppressing device of the circuit breaker that the utility model embodiment provides;
Fig. 9 represents the another kind of air-flow reflection schematic diagram of gear arc portion of the arc leading and suppressing device of the circuit breaker that the utility model embodiment provides.
Description of reference numerals
1-moving contact, 2-fixed contact, 3-baffle plate, 4-keeps off arc portion, and 5-keeps off cambered surface, 6-arc control device, 7-Pao Hu road, 41-end face, 8 increase flux material layer
Embodiment
The arc leading and suppressing device of circuit breaker embodiment of the present utility model being provided below in conjunction with accompanying drawing is elaborated.
As shown in Fig. 1,2,8 and 9, the arc leading and suppressing device of described circuit breaker comprises the dynamic and static contact 1 that is positioned at circuit breaker, 2 and arc control device 6 between Pao Hu road 7, and the baffle plate 3 that is connected to both sides, Pao Hu road, two baffle plates 3 have respectively and extend to dynamic and static contact 1,2 contact point tops, in case the gear arc portion 4 of the free steam flow circuit breaker operation mechanism of electric arc of stop, fixed contact 1,2 generation.
Preferably, two gear arc portions 4 arrange on the bilateral symmetry ground of dynamic/ static contact 1,2.
Like this, owing to being positioned at dynamic and static contact 1, the gear arc portion 4 of 2 contact point tops can will reflect towards the free steam of the mobile electric arc of operating mechanism, thereby can when cut-offfing short circuit current, accelerate electric arc and enter arc control device, and can stop that the free steam of the electric arc that contains metallic enters operating mechanism, prevent that this metallic splash is in operating mechanism, and can prevent from occurring between dynamic/static contact arc reignition, thereby improved arc extinction performance and the breaking capacity of circuit breaker.
Further, each gear arc portion 4 extends but is not contacted with moving contact 1 towards moving contact 1, between gear arc portion 4 and moving contact 1, has suitable gap, and the size in this gap is limited not affect the action of moving contact 1, thereby in barrier air, the action of moving contact 1 is unrestricted.
Further, as shown in Figures 6 and 7, each gear arc portion 4 extends towards moving contact 1 towards the end face 41 of moving contact 1, to form the arc gear cambered surface 5 towards Pao Hu road 7, the gear cambered surface 5 of this arc is reflected gas stream more effectively, thereby the air-flow that accelerates transmitting returns, and to accelerate electric arc, towards arc control device, moves.
Further, the end face 41 of each gear arc portion 4 turns to and is bent downwardly when extending near moving contact 1, in the structure showing at Fig. 6, be bent downwardly extension, namely, the end face 41 of gear arc portion 4 down, to form the gear cambered surface 5 of semicircular arc, now, the gear cambered surface 5 of this semicircular arc is similar to the bend portion of school playground runway substantially, simultaneously, utilize circular shape, can be more advantageously by the air-flow reflection towards operating mechanism motion.In addition, the circular arc rate at this to this circular arc does not limit, as long as can realize the effect of reflected gas stream well.
Certainly, the structure of gear cambered surface 5 is also not limited to above-described arc or circular shape, in other enforcement structures of gear cambered surface 5, concrete as Fig. 3, in structure shown in 4 and 5, the end face 41 of each gear arc portion 4 extends towards moving contact 1, to form perpendicular to baffle plate 3 or to favour the gear cambered surface 5 of baffle plate 3, in the mechanism showing at Fig. 3, between gear cambered surface 5 and the medial surface of baffle plate 3, be formed with angle β, the angular range of this angle β is preferably 90 °～135 °, in this angular range, the better effects if of gear cambered surface 5 reflected gas stream, and process simple and convenient, specifically as shown in FIG. 8 and 9.Certainly, this angle β also can be less than 90 °, and in addition, this angle β also can be less times greater than 135 °.
Further, version when gear cambered surface 5 tilts with baffle plate 3 can have two kinds, and a kind of structure extends upward for keeping off cambered surface 5, concrete structure as shown in Figures 4 and 5; In another kind of structure, can with upwardly extending gear cambered surface 5 up and down symmetrically, this gear cambered surface 5 can be tilted to downward-extension, but this gear cambered surface 5 to downward-extension is still positioned at the top of dynamic and static contact 1,2 contact point.
In addition, gear arc portion 4 is removably connected with baffle plate 3.In a kind of embodiment removably connecting, on baffle plate 3, be formed with draw-in groove (not shown), in gear arc portion 4, there is the card platform (not shown) coordinating with described draw-in groove.
In addition, in other embodiment, gear arc portion 4 and the one-body molded setting of baffle plate 3.
Further, baffle plate 3 can be one-body molded on Shell of circuit breaker, as a part of structure of Shell of circuit breaker inside; Or,
In addition, the baffle plate 3 of the arc leading and suppressing device of circuit breaker of the present utility model and/or gear arc portion 4 are by the gas exhausted material parts that for example nylon material makes.When gear arc portion 4 is made by gas exhausted material, its gear cambered surface 5, when barrier air, also can correspondingly produce gas, thereby in reflected gas stream, the gas of generation can further be accelerated described air-flow and return, and accelerates electric arc and move towards arc control device.
In addition, in order further to improve the effect of striking, preferably, baffle plate 3 can be provided with and increase flux material layer 8 on the medial surface of dynamic/static contact, thereby the electric arc that acceleration dynamic/static contact produces moves towards arc control device, realizes arc leading and suppressing faster.
Obviously, above-described embodiment is only for example is clearly described, not the restriction to execution mode.Concerning those of ordinary skill in the field, also can make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And among the protection range that the apparent variation of being extended out thus or change are still created in the utility model.
Claims (10)
1. an arc leading and suppressing device for circuit breaker, comprises and is positioned at Pao Hu road (7) between the dynamic and static contact (1,2) of circuit breaker and arc control device (6), and the baffle plate (3) that is connected to both sides, Pao Hu road, it is characterized in that,
Two baffle plates (3) have respectively and extend to dynamic and static contact (1,2) contact point top, in case the gear arc portion (4) of the free steam flow circuit breaker operation mechanism of electric arc that stop, fixed contact (1,2) produce.
2. the arc leading and suppressing device of circuit breaker according to claim 1, it is characterized in that, each gear arc portion (4) extends but is not contacted with moving contact (1) towards moving contact (1), and the gap length between gear arc portion (4) and moving contact (1) is limited not affect the action of moving contact (1).
3. the arc leading and suppressing device of circuit breaker according to claim 1 and 2, is characterized in that, the end face (41) of each gear arc portion (4) extends towards moving contact (1), to form the arc gear cambered surface (5) towards Pao Hu road (7).
4. the arc leading and suppressing device of circuit breaker according to claim 3, is characterized in that, the end face (41) of each gear arc portion (4) turns to and is bent downwardly when extending near moving contact (1), to form the gear cambered surface (5) of semicircular arc.
5. the arc leading and suppressing device of circuit breaker according to claim 1 and 2, is characterized in that, end face (41) of each gear arc portion (4) extends towards moving contact (1), to form perpendicular to baffle plate (3) or to favour the gear cambered surface (5) of baffle plate (3).
6. the arc leading and suppressing device of circuit breaker according to claim 1, is characterized in that, gear arc portion (4) is removably connected with baffle plate (3).
7. the arc leading and suppressing device of circuit breaker according to claim 6, is characterized in that, baffle plate is formed with draw-in groove on (3), in gear arc portion (4), has the Ka Tai coordinating with described draw-in groove.
8. the arc leading and suppressing device of circuit breaker according to claim 1, is characterized in that, gear arc portion (4) is one-body molded with baffle plate (3).
9. the arc leading and suppressing device of circuit breaker according to claim 1, is characterized in that, baffle plate (3) can be one-body molded on Shell of circuit breaker; Or,
Baffle plate (3) can removably be connected with Shell of circuit breaker.
10. according to the arc leading and suppressing device of the circuit breaker described in claim 1 or 9, it is characterized in that baffle plate (3) and/or gear arc portion (4) parts for being made by gas exhausted material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320780443.8U CN203553076U (en) | 2013-11-30 | 2013-11-30 | Breaker arc extinguishing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320780443.8U CN203553076U (en) | 2013-11-30 | 2013-11-30 | Breaker arc extinguishing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553076U true CN203553076U (en) | 2014-04-16 |
Family
ID=50471157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320780443.8U Expired - Lifetime CN203553076U (en) | 2013-11-30 | 2013-11-30 | Breaker arc extinguishing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203553076U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646832A (en) * | 2013-11-30 | 2014-03-19 | 德力西电气有限公司 | Arc striking and extinguishing device of circuit breaker |
| CN104485267A (en) * | 2014-12-19 | 2015-04-01 | 常熟开关制造有限公司(原常熟开关厂） | Contact arc extinguishing device for low voltage circuit breaker |
| CN109036993A (en) * | 2018-08-15 | 2018-12-18 | 浙江正泰电器股份有限公司 | Breaker |
-
2013
- 2013-11-30 CN CN201320780443.8U patent/CN203553076U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646832A (en) * | 2013-11-30 | 2014-03-19 | 德力西电气有限公司 | Arc striking and extinguishing device of circuit breaker |
| CN103646832B (en) * | 2013-11-30 | 2016-06-29 | 德力西电气有限公司 | The arc leading and suppressing device of chopper |
| CN104485267A (en) * | 2014-12-19 | 2015-04-01 | 常熟开关制造有限公司(原常熟开关厂） | Contact arc extinguishing device for low voltage circuit breaker |
| CN109036993A (en) * | 2018-08-15 | 2018-12-18 | 浙江正泰电器股份有限公司 | Breaker |
| CN109036993B (en) * | 2018-08-15 | 2024-04-19 | 浙江正泰电器股份有限公司 | Circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |