CN203707013U - Contact of vacuum circuit breaker - Google Patents
Contact of vacuum circuit breaker Download PDFInfo
- Publication number
- CN203707013U CN203707013U CN201420091402.2U CN201420091402U CN203707013U CN 203707013 U CN203707013 U CN 203707013U CN 201420091402 U CN201420091402 U CN 201420091402U CN 203707013 U CN203707013 U CN 203707013U
- Authority
- CN
- China
- Prior art keywords
- contact
- arc
- circular slot
- annular groove
- vacuum
- 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 - Fee Related
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Abstract
The utility model relates to a contact of a vacuum circuit breaker. The contact comprises a contact body. A cylindrical centre hole is arranged in the middle of the lower surface of the contact body. A circular slot I is arranged on the outside of the centre hole. A circular slot II is disposed on the outside of the circular slot I. at least an arc-shaped slot which is intersect with the centre hole, the circular slot I and the circular slot II is arranged in the lower surface of the contact body. The arc-shaped slots are uniformly arranged on the lower surface of the contact body. The contact of the vacuum circuit breaker has a simple structure and is reasonably designed. With the arrangement of the circular slot I and the circular slot II, a longitudinal magnetic field can be produced on the contact when a vacuum arc-extinguishing chamber breaks short-circuit current. Thus, breaking capacity of the vacuum circuit breaker is raised. With the arrangement of the arc-shaped slot, serious surface fusion of the contact can be avoided when the vacuum arc-extinguishing chamber breaks short-circuit current. Dielectric strength can be rapidly recovered after current zero-crossing, and it is conducive to arc extinguishing.
Description
Technical field
The utility model is electric elements field, relates in particular to a kind of contact of vacuum circuit-breaker.
Background technology
Vacuum circuit-breaker because of its arc-extinguishing medium and arc extinguishing after the dielectric in contact gap be all that high vacuum is gained the name; It has advantages of that volume is little, lightweight, be applicable to frequent operation, arc extinguishing need not overhaul, and in power distribution network, application is comparatively universal.Vacuum circuit-breaker mainly comprises three parts: vacuum interrupter, electromagnetism or spring operating mechanism, support and miscellaneous part.The wherein indoor of paramount importance element of vacuum extinction, the connecting-disconnecting function of arc control device and electrical endurance are mainly decided by contact situation.The contact system of vacuum interrupter, with regard to the way of contact, is all dock at present.Therefore contact is an important part, just needs a kind of structure of contact terminal in the time of vacuum interrupter disjunction short circuit current, to form longitudinal magnetic field between contact, thus the formation of restriction contact surface anode spot, the breaking capacity of raising arc control device.
Utility model content
The purpose of this utility model is in order to overcome the deficiencies in the prior art, and a kind of contact of vacuum circuit-breaker is provided.
The utility model is to be achieved through the following technical solutions:
A kind of contact of vacuum circuit-breaker, comprise contact body, the lower surface center of described contact body is provided with cylindrical center bore, described centre bore outside is provided with annular groove I, described annular groove I outside is provided with annular groove II, the lower surface of described body is provided with and all crossing at least one arc grooves of centre bore, annular groove I and annular groove II, and described arc groove is evenly arranged at the lower surface of contact body.
As preferably, described annular groove I is identical with the width of annular groove II.
As preferably, described arc groove number is 5.
Compared with prior art, the beneficial effects of the utility model are: the utility model is simple in structure, reasonable in design, by annular groove I and annular groove II are set, can be in the time of vacuum interrupter disjunction short circuit current, on contact, produce longitudinal magnetic field, thereby improve the breaking capacity of vacuum circuit-breaker; By arc groove is set, vacuum interrupter, in the time of disjunction short circuit current, can have been avoided the serious fusing of contact surface, after current over-zero, can recover rapidly dielectric strength, is conducive to extinguishing of electric arc.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A cutaway view in Fig. 1.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1 and Fig. 2, Fig. 1 is structural representation of the present utility model, and Fig. 2 is A-A cutaway view in Fig. 1.
A kind of contact of vacuum circuit-breaker, comprise contact body 1, the lower surface center of described contact body 1 is provided with cylindrical center bore 2, described centre bore 2 outsides are provided with annular groove I 3, described annular groove I 3 outsides are provided with annular groove II 5, and described annular groove I 3 is identical with the width of annular groove II 5.The lower surface of described body 1 is provided with and all crossing at least one arc grooves 4 of centre bore 2, annular groove I 3 and annular groove II 5, and described arc groove 4 numbers are 5, and described arc groove 4 is evenly arranged at the lower surface of contact body 1.
To sum up, the utility model is simple in structure, reasonable in design, by annular groove I and annular groove II are set, can, in the time of vacuum interrupter disjunction short circuit current, produce longitudinal magnetic field on contact, thereby improves the breaking capacity of vacuum circuit-breaker; By arc groove is set, vacuum interrupter, in the time of disjunction short circuit current, can have been avoided the serious fusing of contact surface, after current over-zero, can recover rapidly dielectric strength, is conducive to extinguishing of electric arc.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (1)
1. the contact of a vacuum circuit-breaker, comprise contact body (1), it is characterized in that, the lower surface center of described contact body (1) is provided with cylindrical center bore (2), described centre bore (2) outside is provided with annular groove I (3), described annular groove I (3) outside is provided with annular groove II (5), annular groove I (3) is identical with the width of annular groove II (5), the lower surface of described body (1) is provided with and centre bore (2), at least one arc groove (4) that annular groove I (3) and annular groove II (5) all intersect, described arc groove (4) is evenly arranged at the lower surface of contact body (1), arc groove (4) number is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091402.2U CN203707013U (en) | 2014-03-03 | 2014-03-03 | Contact of vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420091402.2U CN203707013U (en) | 2014-03-03 | 2014-03-03 | Contact of vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203707013U true CN203707013U (en) | 2014-07-09 |
Family
ID=51057413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420091402.2U Expired - Fee Related CN203707013U (en) | 2014-03-03 | 2014-03-03 | Contact of vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203707013U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653467A (en) * | 2016-10-17 | 2017-05-10 | 湖北大禹汉光真空电器有限公司 | Vacuum arc-extinguishing chamber contact structure |
-
2014
- 2014-03-03 CN CN201420091402.2U patent/CN203707013U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653467A (en) * | 2016-10-17 | 2017-05-10 | 湖北大禹汉光真空电器有限公司 | Vacuum arc-extinguishing chamber contact structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20200303 |