CN1056463C - Bent-arm two-stage longitudinal magnetic-field electrode for vacuum blowout chamber - Google Patents
Bent-arm two-stage longitudinal magnetic-field electrode for vacuum blowout chamber Download PDFInfo
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- CN1056463C CN1056463C CN97108693A CN97108693A CN1056463C CN 1056463 C CN1056463 C CN 1056463C CN 97108693 A CN97108693 A CN 97108693A CN 97108693 A CN97108693 A CN 97108693A CN 1056463 C CN1056463 C CN 1056463C
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- electrode
- connecting lever
- longitudinal magnetic
- crank arm
- lower electrode
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Abstract
The present invention relates to a crank arm type two-stage longitudinal magnetic field electrode used for a vacuum arc-extinguishing chamber, which comprises an upper electrode and a lower electrode; the upper electrode and the lower electrode have the same structures, but are matched with staggered 180 degrees; the upper electrode and the lower electrode compromise electric conduction rods which are collocated with one end of a crank arm; the other end of the crank arm is collocated with a contact head ring; a contact head sheet is collocated on one side of the contact head ring; an n-shaped iron core is inserted in the contact head ring of the crank arm. The crank arm type two-stage longitudinal magnetic field electrode used for a vacuum arc-extinguishing chamber has the advantages of simplifying manufacturing technology, improving the switching on the switching off performance, improving the mechanical strength of the upper electrode and the lower electrode, and leading high rated current to have no need of an additional radiator.
Description
The present invention relates to a kind of longitudinal magnetic-field electrode, particularly a kind of bent-arm two utmost point longitudinal magnetic-field electrodes.
What begin to adopt in the vacuum interrupter manufacturing is a kind of transverse magnetic field electrode, develops into the multipole longitudinal magnetic-field electrode of cup-shaped longitudinal magnetic-field electrode and coil type afterwards, and latter's break performance is much more superior than the former on the whole.Therefore, over past ten years both at home and abroad thumping majority manufactory all in succession large tracts of land promote and adopt back two kinds of electrodes.Improving simultaneously with keeping, but structurally going back more complicated relatively and on break performance, as if be connected to the limit.
Purpose purport of the present invention is in the limitation of breaking above-mentioned prior art, and a kind of bent-arm two utmost point longitudinal magnetic-field electrodes are developed in analysis according to electrician's magnetic field theory, have the advantages that the structure manufacturing is simple, break performance is high, cost is low.
The present invention includes identical top electrode and bottom electrode, the upper and lower electrode 180 ° of phase configuration that stagger, feature of the present invention is, upper and lower electrode includes a conducting rod, one end of a conducting rod and a connecting lever fits together, the other end of connecting lever and a contact ring phase configuration, the one side of contact ring disposes contact blade, one JiongZi Xing is unshakable in one's determination to be inserted in connecting lever and the contact ring, the diameter of the iron core of said JiongZi Xing is less than the internal diameter of contact ring, dispose the groove that can insert connecting lever on the JiongZi Xing iron core, the width of groove is greater than the width of connecting lever.
The present invention not only structurally has breakthrough improvement, can make manufacturing process that bigger simplification is arranged, having solved big rated current simultaneously needs the measure of attached heat sinks and has improved mechanical strength of electrodes, in addition, on break performance, also improve a lot, thereby manufacturing cost is reduced and the further miniaturization of vacuum arc chamber.
Fig. 1 is that electrode structure of the present invention is dissected schematic diagram.
Fig. 2 is the schematic diagram that longitudinal magnetic field of the present invention distributes.
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are elaborated.
Electrode structure of the present invention is dissected principle referring to Fig. 1, comprises by upper and lower conducting rod 1,9, and upper and lower connecting lever 2,7, the contact ring 3,8 up and down, and upper and lower contact blade 5,6 and upper and lower door character type iron core 10,11 are formed.When practical set, last conducting rod 1 fits together with last connecting lever 2 one ends, the other end of last connecting lever 2 and upper contact head ring 3 fit together, upper contact head sheet 5 fits together with upper contact head ring 3, JiongZi Xing iron core 10,11 diameters are slightly less than about 0.5 millimeter of the width that contact ring 3 internal diameters and groove width are slightly larger than connecting lever 2, JiongZi Xing unshakable in one's determination 10 is inserted go up in connecting lever 2 and the upper contact head ring 3, form whole top electrode jointly; The composition of bottom electrode and the composition of top electrode are identical, but the assembling of upper and lower electrode the time should be staggered 180 °.
Among Fig. 1, after electric current I flows into from last conducting rod 1, lead to upper contact head sheet 3 through last connecting lever 2 and guide electric arc 4 into, contact blade 6 flows to down connecting lever 7 extremely down, by conducting rod 9 outflows down.Because the sense of current that last connecting lever flows through is identical with the sense of current that following connecting lever flows through, therefore the magnetic flux of their generations also is equidirectional, and jointly by upper and lower JiongZi Xing iron core 10,11, vertically pass the air gap between two contact blades 5,6, usually these magnetic fluxs are called " longitudinal magnetic field ".Because it is much better than when the existence of JiongZi Xing iron core 10,11, the strength ratio of this longitudinal magnetic field do not have JiongZi Xing unshakable in one's determination.
Electrode operation principle of the present invention is referring to Fig. 2, and according to said structure, because the existence of JiongZi Xing iron core is not strengthened 1～2 times when the longitudinal magnetic field strength ratio of its generation has JiongZi Xing unshakable in one's determination approximately, it can improve the connecting-disconnecting function 50～100% of vacuum interrupter effectively.Because electric current directly flow to connecting lever, and connecting lever is thicker after introducing from conducting rod, the loop is shorter, does not have the generation problems of excessive heat, so be suitable for the vacuum interrupter requirement of big rated current, can not need measures such as attached heat sinks.Offset the eddy current that remnant field produces on the contact blade because the alternation longitudinal magnetic field of symmetry can also play, so contact blade do not need out slit, can improve the mechanical strength of contact blade like this.
The present invention not only can be applicable to the medium voltate grade (electrode of 6～35KV) vacuum interrupters; also can be applicable to protect the electrode of the high-capacity vacuum arc control device of generator circuit breaker; also be applicable to the electrode of the vacuum interrupter of voltage levels through certain improvement; realization is to the transformation and the replacement of existing vacuum interrupter electrode essence, reaches simplified structure, reduces manufacturing cost, further improves the target of break performance.
Claims (3)
1, bent-arm two-stage longitudinal magnetic-field electrode for vacuum blowout chamber, comprise top electrode and bottom electrode that structure is identical, the upper and lower electrode 180 ° of phase configuration that stagger, feature of the present invention is, upper and lower electrode includes a conducting rod, and an end of a conducting rod and a connecting lever fits together, the other end of connecting lever and a contact ring phase configuration, the one side of contact ring disposes contact blade, and a JiongZi Xing is unshakable in one's determination to be inserted in connecting lever and the contact ring.
2, electrode according to claim 1 is characterized in that, the diameter of said JiongZi Xing iron core is less than the internal diameter of contact ring.
3, electrode according to claim 1 is characterized in that, disposes the groove that can insert connecting lever on the said JiongZi Xing iron core, the width that is wider than connecting lever of said groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97108693A CN1056463C (en) | 1997-11-05 | 1997-11-05 | Bent-arm two-stage longitudinal magnetic-field electrode for vacuum blowout chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97108693A CN1056463C (en) | 1997-11-05 | 1997-11-05 | Bent-arm two-stage longitudinal magnetic-field electrode for vacuum blowout chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1184322A CN1184322A (en) | 1998-06-10 |
| CN1056463C true CN1056463C (en) | 2000-09-13 |
Family
ID=5170625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97108693A Expired - Fee Related CN1056463C (en) | 1997-11-05 | 1997-11-05 | Bent-arm two-stage longitudinal magnetic-field electrode for vacuum blowout chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1056463C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2841682B1 (en) * | 2002-06-27 | 2004-12-10 | Schneider Electric Ind Sas | VACUUM BULB FOR AN ELECTRICAL PROTECTIVE APPARATUS SUCH AS A SWITCH OR CIRCUIT BREAKER |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1015412B (en) * | 1987-11-07 | 1992-02-05 | 三菱电机有限公司 | Windmill shape electrode for vacuum circuit breaker |
| CN1139285A (en) * | 1995-04-26 | 1997-01-01 | 株式会社日立制作所 | Electrode for vacuum circuit breaker |
-
1997
- 1997-11-05 CN CN97108693A patent/CN1056463C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1015412B (en) * | 1987-11-07 | 1992-02-05 | 三菱电机有限公司 | Windmill shape electrode for vacuum circuit breaker |
| CN1139285A (en) * | 1995-04-26 | 1997-01-01 | 株式会社日立制作所 | Electrode for vacuum circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1184322A (en) | 1998-06-10 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |