CN103325611A - Separated magnetic-circuit permanent magnetic mechanism - Google Patents
Separated magnetic-circuit permanent magnetic mechanism Download PDFInfo
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- CN103325611A CN103325611A CN2013101964599A CN201310196459A CN103325611A CN 103325611 A CN103325611 A CN 103325611A CN 2013101964599 A CN2013101964599 A CN 2013101964599A CN 201310196459 A CN201310196459 A CN 201310196459A CN 103325611 A CN103325611 A CN 103325611A
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Abstract
The invention discloses a separated magnetic-circuit permanent magnetic mechanism. The separated magnetic-circuit permanent magnetic mechanism comprises an upper static iron core, a lower static iron core, a non-magnetic material gasket and a movable iron core, wherein the non-magnetic material gasket is installed between the upper static iron core and the lower static iron core, the movable iron core is placed in the upper static iron core and the lower static iron core, and the movable iron core, the upper static iron core and the lower static iron are coaxial. The two ends of the movable iron core are connected with guide rods, a closing coil is embedded in the inner surface of the upper static iron core, an opening coil is embedded in the inner surface of the lower static iron core, an upper permanent magnet is embedded in a position above a position, where the upper static iron core is contacted with the movable iron core, inside the upper static iron core, a lower permanent magnet is embedded in a position below a position, where the lower static iron core is contacted with the movable iron core, inside the lower static iron core, a closing keeping gap is formed between a position, corresponding to the movable iron core, of the lower portion of the upper permanent magnet and a position, corresponding to the movable iron core, of the inner surface of the upper static iron core, and an opening keeping gap is formed between a position, corresponding to the movable iron core, of the upper portion of the lower permanent magnet and a position, corresponding to the movable iron core, of the inner surface of the lower static iron core. According to the separated magnetic-circuit permanent magnetic mechanism, the structure is simplified, and motion reliability is enhanced. The separated magnetic-circuit permanent magnetic mechanism can be applied to circuit interrupter having high voltage classes and large opening distances, and has the advantages of achieving high instant separation speed.
Description
Technical field
The present invention relates to the permanent magnet mechanism technical field, be specifically related to a kind of separation magnetic circuit permanent magnetic mechanism.
Background technology
Bistable-state permanent magnet mechanism is a kind of operating mechanism for vacuum circuit-breaker design, because of its high reliability and minute, the little extensive concern that is subject to of closing time scatter, and be widely used in middle pressure field.Its principal character is: the operating state of permanent magnet mechanism can be divided into closing operation, sub-switching operation and hold mode.Hold mode is to provide magnetic force by permanent magnet, makes the stable position that remains on separating brake or combined floodgate of iron core.And close, in the sub-switching operation process, need to provide an electromagnetic force that can overcome the permanent magnet confining force to the logical enough electric currents of corresponding coil, drive moving iron core action, and then the motion of band moving contact.
Traditional bistable-state permanent magnet mechanism, permanent magnet is placed in the static iron core, and divide-shut brake keeps sharing same permanent magnet.The magnetic line of force that the magnetic line of force that permanent magnet produces and coil produce uses common magnetic circuit, and such design has reduced the volume of mechanism on the one hand, but has also brought some problems simultaneously.Because permanent magnet and coil share magnetic circuit, this has just caused at the sub-switching operation initial period, the magnetic force that the electromagnetic force meeting partial offset permanent magnet that coil produces produces, the problem that causes just-off speed to be difficult to improve.Simultaneously, original static iron core design, because the needs of permanent magnet and coil being installed, will be so that the magnetic line of force that coil produces have both also passed through the lower surface of moving iron core by the upper surface of moving iron core, a pulling of the electromagnetic force iron core motion that so just causes coil to produce, another hinders the iron core motion, reduces the operating efficiency of coil.Adopt the permanent-magnet manipulating mechanism with higher just-off speed (Chinese invention patent ZL 201010135358.7) of the adaptation voltage levels of separating magnetic Circuit Design, this mechanism separates retaining part and drive part, so that mechanism is too high, especially in the voltage levels circuit breaker, because it is opened apart from larger, mechanism's centering existing problems affect mechanism reliability.For effectively solving the requirement that traditional bistable-state permanent magnet mechanism is difficult to adapt to large opening, voltage levels circuit breaker, can effectively avoid again the difficult problem of the too high centering of mechanism, the present invention proposes a kind of brand-new mechanism and addresses the above problem.
Summary of the invention
The problem that exists in order to solve above-mentioned prior art the object of the present invention is to provide a kind of separation magnetic circuit permanent magnetic mechanism, can be applied to voltage levels, large opening circuit breaker, has the characteristics of very fast just-off speed.
For reaching above purpose, the present invention adopts following technical scheme:
A kind of separation magnetic circuit permanent magnetic mechanism, comprise top static iron core 4, bottom static iron core 9, be arranged on the nonmagnetic substance pad 6 of 9 of top static iron core 4 and bottom static iron cores, place the moving iron core 8 coaxial with it in top static iron core 4 and the bottom static iron core 9, the top of described moving iron core 8 places in the top static iron core 4, the bottom places in the bottom static iron core 9, be connected with guide rod 1 at the two ends of described moving iron core 8, guide rod 1 top passes top static iron core 4, the bottom passes bottom static iron core 9, inner surface at described top static iron core 4 is nested with closing coil 5, inner surface at described bottom static iron core 9 is nested with switching winding 7, in described top static iron core 4 Yu above moving iron core 8 contact positions, be embedded with top permanent magnet 3, in described bottom static iron core 9 Yu below moving iron core 8 contact positions, be embedded with bottom permanent magnet 10.
Have to close a floodgate corresponding to the position between the moving iron core 8 in permanent magnet 3 bottoms, described top, top static iron core 4 inner surfaces and keep air gap 2, on permanent magnet 10 tops, described bottom, static iron core 9 inner surfaces in bottom have separating brake corresponding to the position between the moving iron core 8 and keep air gap 11.
Keep air gap 2 and separating brake to keep being filled with nonmagnetic substance in the air gap 11 at described combined floodgate.
The present invention is compared with existing technology, and has following advantage:
1) the present invention adopts the cylindrical shaft symmetrical structure, mainly partly is comprised of permanent magnetism retaining part and electromagnetism actuating.The permanent magnetism retaining part mainly comprises moving iron core 8, top static iron core 4 and bottom static iron core 9; Electromagnetism actuating part mainly comprises top static iron core 4, bottom static iron core 9, closing coil 5 and switching winding 7.Wherein: the permanent magnetism retaining part is used to the arc control device contact in the circuit breaker that separating brake confining force and closing retention force are provided, and makes circuit breaker be in stable gate-dividing state or "on" position; Electromagnetism actuating part minute, provide electromagnetic force in the closing operation process, drive the contact motion, make circuit breaker become combined floodgate by separating brake, perhaps become separating brake by combined floodgate.
2) the present invention is adopting on the basis of separating magnetic circuit raising mechanism just-off speed, permanent magnetism retaining part (moving iron core 8, top static iron core 4 and bottom static iron core 9) and electromagnetism actuating part (top static iron core 4, bottom static iron core 9, closing coil 5 and switching winding 7) are organically combined, well solved the problem that is difficult to centering because mechanism is too high.
3) moving iron core 8 links to each other with guide rod 1, by guide rod 1 confining force is transmitted to moving contact, makes it be in stable holding position; The top permanent magnet 3 and the bottom permanent magnet 10 that embed in top static iron core 4 and the bottom static iron core 9, will move iron core 8 remain to close, open position.When circuit breaker need to divide, during closing operation, electromagnetism actuating part will provide an electromagnetic force to drive moving iron core 8 motions, in case moving iron core 8 setting in motions, the air gap between moving iron core 8 and the static iron core increases, then the permanent magnetism confining force descends rapidly, can the Effective Raise just-off speed.
4) be arranged on the nonmagnetic substance pad 6 of 9 of top static iron core 4 and bottom static iron cores, for separating of magnetic circuit; Owing to having the air gap of filling with nonmagnetic substance between moving iron core and the static iron core, can guarantee that like this magnetic line of force only by upper surface or the lower surface of moving iron core 8, has improved the operating efficiency of coil.
Description of drawings
Accompanying drawing is structural representation of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
As shown in drawings, a kind of separation magnetic circuit permanent magnetic mechanism of the present invention, comprise top static iron core 4, bottom static iron core 9, be arranged on the nonmagnetic substance pad 6 of 9 of top static iron core 4 and bottom static iron cores, place the moving iron core 8 coaxial with it in top static iron core 4 and the bottom static iron core 9, the top of described moving iron core 8 places in the top static iron core 4, the bottom places in the bottom static iron core 9, be connected with guide rod 1 at the two ends of described moving iron core 8, guide rod 1 top passes top static iron core 4, the bottom passes bottom static iron core 9, inner surface at described top static iron core 4 is nested with closing coil 5, inner surface at described bottom static iron core 9 is nested with switching winding 7, in described top static iron core 4 Yu above moving iron core 8 contact positions, be embedded with top permanent magnet 3, in described bottom static iron core 9 Yu below moving iron core 8 contact positions, be embedded with bottom permanent magnet 10, in permanent magnet 3 bottoms, described top, static iron core 4 inner surfaces in top have to close a floodgate corresponding to the position between the moving iron core 8 and keep air gap 2, on permanent magnet 10 tops, described bottom, static iron core 9 inner surfaces in bottom have separating brake corresponding to the position between the moving iron core 8 and keep air gap 11.
As preferred implementation of the present invention, keep air gap 2 and separating brake to keep being filled with nonmagnetic substance in the air gap 11 at described combined floodgate.
As shown in drawings, this moment, permanent magnet mechanism was in gate-dividing state, provided magnetic force will move iron core 8 by bottom permanent magnet 10 and remained on open position.Separated by nonmagnetic substance pad 6 in the middle of permanent magnetism retaining part and the electromagnet portion, the magnetic line of force that bottom permanent magnet 10 produces forms closed loop by bottom static iron core 9 and moving iron core 8.If need closing operation, need in closing coil 5, pass through enough electric currents, produce an electromagnetic force.Because the existence of nonmagnetic substance pad 6, the magnetic line of force that this electric current produces are only by moving the upper surface of iron core 8.The such electromagnetic force and the permanent magnetism confining force opposite direction that produce of the electric current in the closing coil 5, the suction of iron core 8 suffered bottom permanent magnets 10 is reduced, when electric current increases to certain value, the suffered suction of moving iron core 8 is less than the counter-force of circuit breaker, electromagnetic force will drive moving iron core 8, drives moving contact and moves to closing position together.In case moving iron core 8 setting in motions, along with and the increase of 10 air gaps of bottom permanent magnet, the permanent magnetism confining force can reduce rapidly, has so just reduced permanent magnet to operating the obstruction of starting stage.When contact arrives closing position, top permanent magnet 3 produces magnetic force will move the iron core 8 stable closing positions that remain on.
During "on" position, the magnetic line of force that top permanent magnet 3 produces forms closed loop by top static iron core 4 and moving iron core 8.If need sub-switching operation, need in switching winding 7, pass through enough electric currents, produce an electromagnetic force.Because the existence of nonmagnetic substance pad 6, the magnetic line of force that this electric current produces are only by moving the lower surface of iron core 8.The such electromagnetic force and the permanent magnetism confining force opposite direction that produce of the electric current in the switching winding 7, the suction of iron core 8 suffered top permanent magnets 3 is reduced, when electric current increases to certain value, the suffered suction of moving iron core 8 is less than the counter-force of circuit breaker, and electromagnetic force will drive moving iron core 8 and drive moving contacts and move to open position together.In case moving iron core 8 setting in motions, along with and the increase of 3 air gaps of top permanent magnet, the permanent magnetism confining force can reduce rapidly, has so just reduced permanent magnet to operating the obstruction of starting stage, has improved just-off speed.When contact arrives open position, permanent magnet 10 produces magnetic force will move the iron core 8 stable open positions that remain on.
Claims (3)
1. one kind is separated magnetic circuit permanent magnetic mechanism, it is characterized in that: comprise top static iron core (4), bottom static iron core (9), be arranged on the nonmagnetic substance pad (6) between top static iron core (4) and bottom static iron core (9), place the moving iron core (8) coaxial with it in top static iron core (4) and the bottom static iron core (9), the top of described moving iron core (8) places in the top static iron core (4), the bottom places in the bottom static iron core (9), be connected with guide rod (1) at the two ends of described moving iron core (8), guide rod (1) top passes top static iron core (4), the bottom passes bottom static iron core (9), inner surface at described top static iron core (4) is nested with closing coil (5), inner surface at described bottom static iron core (9) is nested with switching winding (7), in described top static iron core (4), be embedded with top permanent magnet (3) with moving iron core (8) contact position top, in described bottom static iron core (9), be embedded with bottom permanent magnet (10) with moving iron core (8) contact position below.
2. a kind of separation magnetic circuit permanent magnetic mechanism according to claim 1, it is characterized in that: have to close a floodgate corresponding to the position between the moving iron core (8) in described top permanent magnet (3) bottom, top static iron core (4) inner surface and keep air gap (2), on described bottom permanent magnet (10) top, bottom static iron core (9) inner surface has separating brake corresponding to the position between the moving iron core (8) and keep air gap (11).
3. a kind of separation magnetic circuit permanent magnetic mechanism according to claim 2 is characterized in that: keep air gap (2) and separating brake to keep being filled with nonmagnetic substance in the air gap (11) at described combined floodgate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101964599A CN103325611A (en) | 2013-05-23 | 2013-05-23 | Separated magnetic-circuit permanent magnetic mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101964599A CN103325611A (en) | 2013-05-23 | 2013-05-23 | Separated magnetic-circuit permanent magnetic mechanism |
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| CN103325611A true CN103325611A (en) | 2013-09-25 |
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| CN2013101964599A Pending CN103325611A (en) | 2013-05-23 | 2013-05-23 | Separated magnetic-circuit permanent magnetic mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167326A (en) * | 2014-07-30 | 2014-11-26 | 东南大学 | Three-coil permanent magnet mechanism used for high-voltage vacuum circuit breaker |
| CN106449277A (en) * | 2016-10-28 | 2017-02-22 | 游民 | Self-closing magnetic circuit permanent magnetic mechanism for switch |
| CN108054065A (en) * | 2018-01-08 | 2018-05-18 | 银河电气有限公司 | A kind of self-healing fast-switching switch |
Citations (5)
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|---|---|---|---|---|
| CN2626038Y (en) * | 2003-06-27 | 2004-07-14 | 沈阳工业大学 | Dual coil bistable permanent magnet operation mechanism |
| JP2006164812A (en) * | 2004-12-09 | 2006-06-22 | Fuji Electric Fa Components & Systems Co Ltd | Electromagnetic contactor |
| CN101256919A (en) * | 2007-04-24 | 2008-09-03 | 上海电器股份有限公司人民电器厂 | Asymmetry parallel excitation type bistable state permanent magnet control mechanism |
| CN201387818Y (en) * | 2009-03-06 | 2010-01-20 | 沈阳工业大学 | Bi-stable permanent magnet operating mechanism of bilateral dispersive excitation of opening-closing operational air gap |
| CN101789318A (en) * | 2010-03-30 | 2010-07-28 | 西安交通大学 | Novel bistable permanent magnetic actuator capable of increasing instantaneous opening speed |
-
2013
- 2013-05-23 CN CN2013101964599A patent/CN103325611A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626038Y (en) * | 2003-06-27 | 2004-07-14 | 沈阳工业大学 | Dual coil bistable permanent magnet operation mechanism |
| JP2006164812A (en) * | 2004-12-09 | 2006-06-22 | Fuji Electric Fa Components & Systems Co Ltd | Electromagnetic contactor |
| CN101256919A (en) * | 2007-04-24 | 2008-09-03 | 上海电器股份有限公司人民电器厂 | Asymmetry parallel excitation type bistable state permanent magnet control mechanism |
| CN201387818Y (en) * | 2009-03-06 | 2010-01-20 | 沈阳工业大学 | Bi-stable permanent magnet operating mechanism of bilateral dispersive excitation of opening-closing operational air gap |
| CN101789318A (en) * | 2010-03-30 | 2010-07-28 | 西安交通大学 | Novel bistable permanent magnetic actuator capable of increasing instantaneous opening speed |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167326A (en) * | 2014-07-30 | 2014-11-26 | 东南大学 | Three-coil permanent magnet mechanism used for high-voltage vacuum circuit breaker |
| CN106449277A (en) * | 2016-10-28 | 2017-02-22 | 游民 | Self-closing magnetic circuit permanent magnetic mechanism for switch |
| CN108054065A (en) * | 2018-01-08 | 2018-05-18 | 银河电气有限公司 | A kind of self-healing fast-switching switch |
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Application publication date: 20130925 |