CN202796808U - N-pole arc extinguishing device - Google Patents
N-pole arc extinguishing device Download PDFInfo
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- CN202796808U CN202796808U CN201220471075.4U CN201220471075U CN202796808U CN 202796808 U CN202796808 U CN 202796808U CN 201220471075 U CN201220471075 U CN 201220471075U CN 202796808 U CN202796808 U CN 202796808U
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- arc
- striking piece
- arc striking
- utmost point
- fixed contact
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Abstract
The utility model discloses an N-pole arc extinguishing device which is used for circuit breakers. The N-pole arc extinguishing device comprises a first arc striking piece and a second arc striking piece, the first arc striking piece contacts with an N-pole fixed contact, the second arc striking piece and the first arc striking piece are insulated and are arranged at intervals, the second arc striking piece is used for connecting and leading an electric arc on an N-pole movable contact, and both the first arc striking piece and the second arc striking piece are magnetic pieces. When the movable contact and the fixed contact are separated, a potential difference is formed between the first arc striking piece and the second arc striking piece, an electric field is formed between the two arc striking pieces, the first arc striking piece and the second arc striking piece have high level and low level and simultaneously generate magnetic fields as both the first arc striking piece and the second arc striking piece are the magnetic pieces, the moving electric arc leaves the movable contact and the fixed contact under the combined action of electric field force and magnetic field force and is extinguished between the first arc striking piece and the second arc striking piece, and N-pole arc extinguishing is effectively realized.
Description
Technical field
The utility model relates to breaker technical field, relates in particular to a kind of arc-control device of the N utmost point.
Background technology
Circuit breaker refers to close and closes, carries and cut-off electric current under the normal loop condition; and can close the switching device that closes, carries and cut-off the electric current under the unusual loop condition in setting time; wherein; with the number of poles of 1P, 2P, 3P, 4P acute pyogenic infection of finger tip circuit breaker, the ordering of electric phase sequence is A, B, C, N.ABC refers to the live wire of three-phase electricity, and N refers to the zero line of three-phase and four-line.
Please refer to Fig. 2; Fig. 2 is the structural representation of the arc-control device of the N utmost point in the prior art; circuit breaker in use; moving contact 1 and the fixed contact of the N utmost point can produce electric arc when disjunction; wherein fixed contact comprises static contact panel 3 and the fixed contact 2 that is arranged on the static contact panel 3; concrete; electric arc produces during with fixed contact 2 disjunction owing to moving contact 1; because the N utmost point need be placed electronic circuit board 6; and 6 pairs of electric arcs of electronic circuit board and temperature sensitivity are all higher; therefore need electronic circuit board 6 is carried out isolation processing, the inner space restriction after being isolated, the N utmost point does not have arc-control device; arc extinguishing becomes a unmanageable problem; cause in the moving contact 1 and fixed contact breaking course of the N utmost point, the electric arc of generation usually can make moving contact 1 and fixed contact scaling loss owing to lack arc-control device.Find that by test in the circuit breaker of 1P+N or 3P+N, the quenching time, all about 10ms, specified operation breaking current was far below 4.5KA, and after test, whole test products is impaired serious, can not use again.
Therefore, how providing a kind of arc-control device of the N utmost point, to realize N utmost point arc extinguishing, is the technical problem that present those skilled in the art need to be resolved hurrily.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of arc-control device of the N utmost point, to realize N utmost point arc extinguishing.
In order to achieve the above object, the utility model provides following technical scheme:
A kind of arc-control device of the N utmost point, be used for circuit breaker, comprise the first arc striking piece that contacts with the fixed contact of the described N utmost point and the second arc striking piece that arranges with described the first arc striking piece insulation and interval, described the second arc striking piece is used for connecing the electric arc on the moving contact that draws the described N utmost point, and described the first arc striking piece and described the second arc striking piece are magnetic conduction sheet.
Preferably, the interval between above-mentioned the first arc striking piece and described the second arc striking piece is along with dwindling gradually away from the described N utmost point.
Preferably, the interval between above-mentioned the first arc striking piece and described the second arc striking piece is first along with dwindling gradually away from the described N utmost point, then along with increasing gradually away from the described N utmost point.
Preferably, the arc ignition face of above-mentioned the first arc striking piece flushes with the working face of the fixed contact of described fixed contact, and described the first arc striking piece contacts with described fixed contact.
Preferably, above-mentioned the first arc striking piece and described fixed contact are the integral type structure.
Preferably, above-mentioned the first arc striking piece is fixed on the static contact panel of described fixed contact.
A kind of arc-control device of the N utmost point, be used for circuit breaker, comprise the first arc striking piece that contacts with the fixed contact of the described N utmost point and the second arc striking piece that arranges with described the first arc striking piece insulation and interval, described the second arc striking piece is used for connecing the electric arc on the moving contact that draws the described N utmost point, described the first arc striking piece and described the second arc striking piece are magnetic conduction sheet, have high-low level between described the first arc striking piece and described the second arc striking piece.
The arc-control device of the N utmost point that the utility model provides, when moving contact separates with fixed contact, the first arc striking piece and the second arc striking piece just form electrical potential difference, between two arc striking pieces, form electric field, has high-low level, the first arc striking piece and the second arc striking piece are magnetic conduction sheet simultaneously, also can produce magnetic field so simultaneously, under the acting in conjunction of Electric and magnetic fields, motion electric arc has well been realized the arc extinguishing of the N utmost point leaving moving contact and fixed contact under the effect of Electric and magnetic fields power and knocking out between the first arc striking piece and the second arc striking piece.
Knock out after by the first arc striking piece and the second arc striking piece electric arc being drawn, can not be subject to the restriction of inner space after the electronic circuit board isolation, in sum, the arc-control device of the N utmost point that the utility model provides has well been realized N utmost point arc extinguishing.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the arc-control device of the N utmost point that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the structural representation of the arc-control device of the N utmost point in the prior art.
Among Fig. 1-Fig. 2:
Moving contact 1, fixed contact 2, static contact panel 3, the second arc striking piece 4, the first arc striking piece 5, electronic circuit board 6.
Embodiment
The utility model embodiment provides a kind of arc-control device of the N utmost point, to realize N utmost point arc extinguishing.
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, the structural representation of the arc-control device of the N utmost point that Fig. 1 provides for the utility model embodiment.The arc-control device of the N utmost point that the utility model embodiment provides, be used for circuit breaker, comprise the first arc striking piece 5 that is connected with the fixed contact of the N utmost point and the second arc striking piece 4 that arranges with 5 insulation of the first arc striking piece and interval, the second arc striking piece 4 is used for connecing the electric arc on the moving contact 1 that draws the N utmost point, and the first arc striking piece 5 and the second arc striking piece 4 are magnetic conduction sheet.
When moving contact 1 separates with fixed contact, the first arc striking piece 5 and the second arc striking piece 4 just form electrical potential difference, between two arc striking pieces, form electric field, has high-low level, the first arc striking piece 5 and the second arc striking piece 4 are magnetic conduction sheet simultaneously, also can produce magnetic field so simultaneously, under the acting in conjunction of Electric and magnetic fields, motion electric arc has well been realized the arc extinguishing of the N utmost point leaving moving contact 1 and fixed contact under the effect of Electric and magnetic fields power and knocking out between the first arc striking piece 5 and the second arc striking piece 4.
Knock out after by the first arc striking piece 5 and the second arc striking piece 4 electric arc being drawn, can not be subject to the restriction of inner space after the electronic circuit board isolation, in sum, the arc-control device of the N utmost point that the utility model provides has well been realized N utmost point arc extinguishing.
Simultaneously, the overall performance of the arc-control device of the N utmost point that the utility model embodiment provides is increased dramatically, show through test, its breaking capacity is risen to more than the 10KA by the not enough 4.5KA of specified operation breaking current before, specified limit breaking current has reached 20KA, and product structure is intact after the test.In addition, because the significantly lifting of properties of product, also reduced to generating process with to the requirement of material property.
Concrete, the interval between the first arc striking piece 5 and the second arc striking piece 4 is first along with dwindling gradually away from the described N utmost point, then along with increasing gradually away from the described N utmost point.Be spaced apart wide, the middle narrow shape in two ends between the first arc striking piece 5 and the second arc striking piece 4 so, can control like this movement velocity of electric arc, can change electric field again, can also share the electric current that passes through between moving contact 1 and the fixed contact simultaneously, reduce moving contact 1 and fixed contact scaling loss degree.At first the interval is first along with dwindling gradually away from the described N utmost point, can reduce the movement velocity of electric arc between the first arc striking piece 5 and the second arc striking piece 4, prevent that its motion is too fast, cause electric arc before not knocked out fully, the end of arrival interval, the first arc striking piece 5 and the second arc striking piece 4 itself are caused the equivalent damage of burning, then the interval is along with increasing gradually away from the described N utmost point, the end that is equivalent to the first arc striking piece 5 and the second arc striking piece 4 is mutually expansion, like this can be with dispersing that electric arc expands, reduced the impact of electric arc to shell, can also narrow slit be set in corresponding position simultaneously, when electric arc expand disperse out the time, utilize narrow slit that scattered electric arc is extinguished fast.
Simultaneously, with the cross-sectional area of the first arc striking piece 5 and the second arc striking piece 4 arrange larger, can strengthen the field intensity of the electromagnetic field between the first arc striking piece 5 and the second arc striking piece 4, so that electric arc can break away from moving contact 1 and fixed contact rapidly, can also reduce simultaneously the up and down current density between the two poles of the earth, reduce the degree of burning of product.
Concrete, the arc ignition face of the first arc striking piece 5 flushes with the working face of the fixed contact of fixed contact 2, and the first arc striking piece 5 contacts with fixed contact 2.Wherein, the arc ignition face of the first arc striking piece 5 refers to the one side towards moving contact 1, touch at first electric arc and it is connect the one side of drawing, the one side that the working face of fixed contact contacts when referring to fixed contact with moving contact 1 closure, generally speaking, arc striking piece is connected use with static contact panel 3, owing between fixed contact 2 and the static contact panel 3 certain difference in height is arranged, the jump that electric arc can produce electric arc when being sent on the first arc striking piece 5 through static contact panel 3, moving contact 1 and fixed contact are caused damage, therefore the first arc striking piece 5 is contacted with fixed contact 2, directly electric arc is guided on the first arc striking piece 5, and the arc ignition face of the first arc striking piece 5 flushes with the working face of fixed contact 2, do not have difference in height, avoided the jump of electric arc.
Concrete, the first arc striking piece 5 is the integral type structure with fixed contact 2, so can guarantee does not have difference in height between the first arc striking piece 5 and the fixed contact 2 yet, has both avoided the dead angle at fixed contact 2 places and the jump of electric arc, can also utilize the magnetic material effect, attract electric arc to leave moving contact 1 and fixed contact, because the first arc striking piece 5 and the second arc striking piece 4 cross sections are large, thermal diffusivity is good, also has the fusing point height simultaneously, the advantages such as anti-calcination ability is strong, the well performance of improving product.
Concrete, the first arc striking piece 5 is fixed on the static contact panel 3 of fixed contact, can adopt like this mode of welding, and is directly that the first arc striking piece 5 is fixing, need not to add other fixtures, so that the installation of the first arc striking piece 5 convenience very, and saved cost of manufacture.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. the arc-control device of a N utmost point is used for circuit breaker, it is characterized in that, comprises the first arc striking piece (5) that contacts with the fixed contact of the described N utmost point and the second arc striking piece (4) that arranges with described the first arc striking piece (5) insulation and interval,
Described the second arc striking piece (4) is used for connecing the electric arc on the moving contact (1) that draws the described N utmost point,
Described the first arc striking piece (5) is magnetic conduction sheet with described the second arc striking piece (4).
2. the arc-control device of the N utmost point according to claim 1 is characterized in that, the interval between described the first arc striking piece (5) and described the second arc striking piece (4) is along with dwindling gradually away from the described N utmost point.
3. the arc-control device of the N utmost point according to claim 1 is characterized in that, the interval between described the first arc striking piece (5) and described the second arc striking piece (4) is first along with dwindling gradually away from the described N utmost point, then along with increasing gradually away from the described N utmost point.
4. the arc-control device of the N utmost point according to claim 1 is characterized in that, the arc ignition face of described the first arc striking piece (5) flushes with the working face of the fixed contact (2) of described fixed contact,
Described the first arc striking piece (5) contacts with described fixed contact (2).
5. the arc-control device of the N utmost point according to claim 4 is characterized in that, described the first arc striking piece (5) is the integral type structure with described fixed contact (2).
6. the arc-control device of the N utmost point according to claim 4 is characterized in that, described the first arc striking piece (5) is fixed on the static contact panel (3) of described fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220471075.4U CN202796808U (en) | 2012-09-17 | 2012-09-17 | N-pole arc extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220471075.4U CN202796808U (en) | 2012-09-17 | 2012-09-17 | N-pole arc extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796808U true CN202796808U (en) | 2013-03-13 |
Family
ID=47824012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220471075.4U Expired - Lifetime CN202796808U (en) | 2012-09-17 | 2012-09-17 | N-pole arc extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202796808U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578882A (en) * | 2013-10-27 | 2014-02-12 | 环宇集团有限公司 | Breaker special for electricity meter |
| CN103762434A (en) * | 2014-01-22 | 2014-04-30 | 四川华丰企业集团有限公司 | Metal contact element and high-voltage electric connector thereof |
| CN109036906A (en) * | 2018-09-17 | 2018-12-18 | 美高电气科技有限公司 | A kind of electric arc divided system |
-
2012
- 2012-09-17 CN CN201220471075.4U patent/CN202796808U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578882A (en) * | 2013-10-27 | 2014-02-12 | 环宇集团有限公司 | Breaker special for electricity meter |
| CN103762434A (en) * | 2014-01-22 | 2014-04-30 | 四川华丰企业集团有限公司 | Metal contact element and high-voltage electric connector thereof |
| CN103762434B (en) * | 2014-01-22 | 2015-10-21 | 四川华丰企业集团有限公司 | A kind of metal contact element and high-voltage electric connector thereof |
| CN109036906A (en) * | 2018-09-17 | 2018-12-18 | 美高电气科技有限公司 | A kind of electric arc divided system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325000 No. 18, Sha Hung Road, North white elephant Town, Yueqing City, Wenzhou, Zhejiang. Patentee after: ZHEJIANG CHUANGQI ELECTRIC Co.,Ltd. Address before: 325000 No. 18, Sha Hung Road, North white elephant Town, Yueqing City, Wenzhou, Zhejiang. Patentee before: WENZHOU LUOGELANG ELECTRICAL EQUIPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |