CN201796810U - Longitudinal Magnetic Field Contact Structure of Asymmetric Vacuum Interrupter - Google Patents
Longitudinal Magnetic Field Contact Structure of Asymmetric Vacuum Interrupter Download PDFInfo
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- CN201796810U CN201796810U CN2010202393286U CN201020239328U CN201796810U CN 201796810 U CN201796810 U CN 201796810U CN 2010202393286 U CN2010202393286 U CN 2010202393286U CN 201020239328 U CN201020239328 U CN 201020239328U CN 201796810 U CN201796810 U CN 201796810U
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- 230000003068 static effect Effects 0.000 claims description 19
- 238000009413 insulation Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
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Abstract
An asymmetric vacuum arc extinguish chamber longitudinal magnetic field contact structure comprises an insulating shell and a stationary conductive pole fixedly connected with one end of the insulating shell, wherein the stationary conductive pole is fixedly connected with a stationary contact, a moving conductive pole is fixedly connected to the other end of the insulating casing opposite to the end with the stationary conductive pole, the moving conductive pole is fixedly connected with a moving contact, and a gap is reserved between the moving contact and the stationary contact. The asymmetric vacuum arc extinguish chamber longitudinal magnetic field contact structure is characterized in that a longitudinal magnetic field coil is disposed between the stationary conductive pole and the stationary contact, and no coil structure needs to be disposed between the moving conductive pole and the moving contact. By adopting the asymmetric contact structure, sufficiently great longitudinal magnetic field is guaranteed while the moving contact structure can be simplified, the mechanical strength of the moving contact structure is enhanced, and weight is reduced, thereby favoring increase of switching speed of the contacts and further improving switching performance of a vacuum switch.
Description
Technical field: the invention belongs to power domain, specifically refer to a kind of vacuum interrupter longitudinal field contact system that is applicable to various vacuum circuit-breakers and vacuum contactor.
Background technology: the vacuum switch arc control device are cores of vacuum circuit-breaker and contactor, and its performance index are directly connected to the work and the index of aging of vacuum switch.The core technology of vacuum interrupter is to adopt the suitable structure of contact terminal that can produce specific magnetic fields, and comprising transverse magnetic field structure of contact terminal and longitudinal field contact structure, the latter is more suitable for high-capacity vacuum switch.
All present vacuum interrupter longitudinal field contacts all adopt symmetrical structure, and promptly dynamic and static contact is respectively laid a coil.In order to produce enough strong and more uniform longitudinal magnetic field, usually adopt 1/2,1/3/ or 1/4 circle loop construction, for guaranteeing that contact system has certain mechanical strength and less loop resistance, the volume and the quality of longitudinal field contact structure are bigger, and the big moving contact of quality is very unfavorable for improving its movement velocity, and the raising of the speed of the cut-offfing against vacuum circuit breaker break performance of contact is most important.Therefore, inventing new longitudinal field contact structure to improve the needs of vacuum switch performance in the present technique exist.
Summary of the invention:
Goal of the invention: the present invention proposes a kind of asymmetric formula longitudinal field contact structure, and purpose is to simplify its structure and alleviates quality, finally improves the performance of vacuum switch with this.
Technical scheme: the utility model is implemented by the following technical programs:
Asymmetric formula vacuum interrupter longitudinal field contact structure comprises insulation crust, and with the static conductive rod that insulation crust one end is fixedlyed connected, static conductive rod is fixedlyed connected with fixed contact; Fixedly connected moving conductive rod with the corresponding insulation crust other end of static conductive rod place end, moving conductive rod is fixedlyed connected with moving contact, there is the space between moving contact and the fixed contact, it is characterized in that: lay the longitudinal magnetic field coil between described static conductive rod and the fixed contact, and need not to lay any loop construction between moving conductive rod and the moving contact.
Described longitudinal magnetic field coil is a sandwich construction.
Advantage and effect: advantage of the present utility model is:
Moving contact needn't be provided with loop construction, thereby makes that its structure obtains simplifying, and its mechanical strength is improved, and the more important thing is to alleviate its quality, and this is very favourable to the raising that the contact breaking speed reaches the break performance that produces therefrom.Longitudinal magnetic field in the arc control device is produced by the fixed contact coil because fixed contact and stationary contact bar are to adopt with the vacuum extinction chamber enclosure to fixedly connected, the requirement of its volume and quality to compare moving contact require much lower.Therefore, can adopt the mechanical strength height, loop resistance is little and can produce the static contact structure of enough strong and uniform longitudinal magnetic field.This helps improving the limit drop-out current of vacuum switch on the one hand, on the other hand, owing to the minimizing of contact loop resistance, can also improve the operating current of vacuum switch.This asymmetric vacuum longitudinal field contact structure is applicable to large-capacity vacuum circuit breaker.
Description of drawings:
Fig. 1 is a symmetrical expression longitudinal field contact structural representation;
Fig. 2 is an asymmetric formula longitudinal field contact structural representation described in the utility model;
Description of reference numerals:
1, insulation crust 2, moving conductive rod 3, moving contact 4, static conductive rod 5, fixed contact 6, longitudinal magnetic field coil 7, bellows.
Embodiment:
Below in conjunction with accompanying drawing the utility model is specifically described:
Fig. 1 is a symmetrical expression longitudinal field contact structural representation in the prior art, as shown in the figure, comprise fixed contact 5 and moving contact 3, respectively lay 1 longitudinal magnetic field coil 6 at moving contact 3 and fixed contact 5, cause the volume and the quality of longitudinal field contact structure bigger, and then influence the vacuum circuit-breaker break performance.
Fig. 2 is an asymmetric formula longitudinal field contact structural representation described in the utility model, as shown in the figure, comprise insulation crust 1, the static conductive rod 4 of fixedlying connected with insulation crust 1 one ends, static conductive rod 4 is fixedlyed connected with fixed contact 5, lays the longitudinal magnetic field coil 6 of sandwich construction between static conductive rod 4 and fixed contact 5; Fixedly connected moving conductive rod 2 with corresponding insulation crust 1 other end of static conductive rod 4 place ends, moving conductive rod 2 is fixedlyed connected with moving contact 3, need not to lay any loop construction between moving conductive rod 2 and the moving contact 3; There is the space between moving contact 3 and the fixed contact 5.
The vacuum interrupter longitudinal magnetic field is only produced by the longitudinal magnetic field coil between static conductive rod 4 and the fixed contact 56, when electric current flows through path shown in Fig. 2, will produce required longitudinal magnetic field between moving contact 3, fixed contact 5.By adopting the structure of contact terminal of asymmetric formula, under the condition that guarantees enough strong longitudinal magnetic field, make that moving contact 3 structures are simplified, its mechanical strength is improved, quality is minimized, and helps the raising that contact cut-offs speed, and then can improve the break performance of vacuum switch.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202393286U CN201796810U (en) | 2010-06-28 | 2010-06-28 | Longitudinal Magnetic Field Contact Structure of Asymmetric Vacuum Interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202393286U CN201796810U (en) | 2010-06-28 | 2010-06-28 | Longitudinal Magnetic Field Contact Structure of Asymmetric Vacuum Interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201796810U true CN201796810U (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202393286U Expired - Fee Related CN201796810U (en) | 2010-06-28 | 2010-06-28 | Longitudinal Magnetic Field Contact Structure of Asymmetric Vacuum Interrupter |
Country Status (1)
| Country | Link |
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| CN (1) | CN201796810U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701065A (en) * | 2013-12-04 | 2015-06-10 | 沈阳工业大学 | Asymmetric coil-type rotating magnetic vacuum arc extinguishing chamber contact system |
| CN110047695A (en) * | 2019-05-14 | 2019-07-23 | 上海电力学院 | Vacuum interrupter coil plate contact structure in mechanical high-voltage dc circuit breaker |
| CN111463061A (en) * | 2019-01-21 | 2020-07-28 | 国家电网有限公司 | Vacuum arc-extinguishing chamber and vacuum circuit breaker |
-
2010
- 2010-06-28 CN CN2010202393286U patent/CN201796810U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701065A (en) * | 2013-12-04 | 2015-06-10 | 沈阳工业大学 | Asymmetric coil-type rotating magnetic vacuum arc extinguishing chamber contact system |
| CN111463061A (en) * | 2019-01-21 | 2020-07-28 | 国家电网有限公司 | Vacuum arc-extinguishing chamber and vacuum circuit breaker |
| CN110047695A (en) * | 2019-05-14 | 2019-07-23 | 上海电力学院 | Vacuum interrupter coil plate contact structure in mechanical high-voltage dc circuit breaker |
| CN110047695B (en) * | 2019-05-14 | 2021-04-13 | 上海电力学院 | Vacuum arc-extinguishing chamber coil flat contact structure in mechanical high-voltage direct-current circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20130628 |