CN101447365A - Monostable permanent magnetism operating mechanism - Google Patents
Monostable permanent magnetism operating mechanism Download PDFInfo
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- CN101447365A CN101447365A CNA2008102435271A CN200810243527A CN101447365A CN 101447365 A CN101447365 A CN 101447365A CN A2008102435271 A CNA2008102435271 A CN A2008102435271A CN 200810243527 A CN200810243527 A CN 200810243527A CN 101447365 A CN101447365 A CN 101447365A
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Abstract
The invention relates to a monostable permanent magnetism operating mechanism used for a high-voltage circuit breaker and perfectly matched with the main body of the high-voltage circuit breaker, thereby further improving the performance of the high-voltage circuit breaker. The monostable permanent magnetism operating mechanism comprises a closing coil, a permanent magnet, a magnetic yoke and a movable iron core. The closing coil surrounding the movable iron core and the permanent magnet are arranged between the movable iron core and the magnetic yoke; the permanent magnet is positioned above the closing coil; the closing coil comprises a main closing coil and n auxiliary closing coils which are mutually connected in parallel; and the main closing coil is surrounded on the periphery of the closing auxiliary coil. The invention has the following advantages: firstly, the parts are small, the reliability is high, and the energy dissipation is low; secondly, the closing exciting current is less, and the matching with a permanent magnet driver is better; thirdly, the opening brake operation adopts an opening spring; the opening time is less, and the larger opening speed can be obtained; fourthly, compared with a spring operating mechanism, the closing and the opening characteristics are better matched with the contact dynamic characteristic of the circuit breaker; and fifthly, the installation, the maintenance and the debugging are convenient.
Description
Technical field
The present invention relates to a kind of Monostable permanent magnetism operating mechanism.
Background technology
Along with the growth of electric load, phase early 1980s, China work about electric power person furthers investigate and discusses as distribution voltage 20kV, has made the conclusion of necessary " establishment 20kV is a distribution voltage, is listed as the national standard grade ".China's medium voltage distribution network if can boost to 20kV with 10kV, and energy loss can reduce 3/4, can save transformer station's quantity and soil, reduces circuit corridor resource etc.Jiangsu Power Company has been formulated the 20kV technical standard now, and this standardization for the 20kV device fabrication provides good basis.
At present, all be external or Chinese-foreign joint venture's production about the supporting circuit breaker of 20kV level power distribution network, on this high pressure level breaker, adopting with the vacuum mostly is the primary cut-out of arc-extinguishing medium.Its operating mechanism adopts spring operating mechanism mostly.The spring operating mechanism shortcoming is that the characteristic of power output cooperates relatively poor with the circuit breaker load characteristic; Number of spare parts is many, the processing request height; Along with the increase of operating work, reduce mechanical endurance greatly.Permanent-magnet manipulating mechanism is pressure field in being applied in recent years, and its advantage is simple in structure, and parts are few, the reliability height, and its dynamic characteristic and the load of primary cut-out contact are joined better.Wherein the development of Monostable permanent magnetism operating mechanism mainly concentrates on the vacuum circuit-breaker of 12kV level, is applied on the 20kV level power distribution network can considering to further expand Monostable permanent magnetism operating mechanism on the basis that the permanent magnetism technology is successfully applied to medium voltage breaker.
Summary of the invention
The invention provides a kind of Monostable permanent magnetism operating mechanism, be used for primary cut-out, reach perfect cooperation, and then improve the performance of primary cut-out with the body of primary cut-out.
Described Monostable permanent magnetism operating mechanism, closing coil, permanent magnet, yoke, moving unshakable in one's determination, be provided with between moving iron core and yoke around moving closing coil and permanent magnet unshakable in one's determination, permanent magnet is positioned at the closing coil top, closing coil comprises the main and auxiliary index contour circle of the combined floodgate of mutual parallel connection, the combined floodgate main coil be centered around the combined floodgate ancillary coil around.
As improvement of the present invention, also comprise the magnetic inductive block that is positioned at the permanent magnet inboard, described magnetic inductive block is around moving unshakable in one's determination.
As another kind of improvement the of the present invention, also on combined floodgate main coil and/or ancillary coil, be equipped with selector switch, preferably on the combined floodgate main coil, be equipped with selector switch.
The present invention changes into the main and auxiliary index contour circle of working in coordination with closing coil by a coil on the basis of common permanent-magnet manipulating mechanism, the number of turn of main coil is 2.2～2.8 times of the ancillary coil number of turn, is preferably 2 times.When permanent-magnet manipulating mechanism is operated, main and auxiliary index contour circle feeds electric current simultaneously, when total number of turn is identical, the form of main and auxiliary index contour circle is with respect to a coil, inductance in the circuit is less, the electric current rate of climb is fast, thereby makes contact of breaker obtain closing speed faster, and closing time is also corresponding simultaneously reduces; When on combined floodgate main coil and/or ancillary coil, being equipped with selector switch, because when carrying out sub-switching operation, the magnetic field superposition that the magnetic field that produces needs only and permanent magnet produces, and then the electromagnetic force and the permanent magnetism power that produce offset just passable, therefore only need to feed less reverse current in the coil, compare with single coil, the circuit inductance value is littler, so comparatively fast the electric current rate of climb improves opening time.On the combined floodgate main coil, be equipped with selector switch, when carrying out sub-switching operation, inboard ancillary coil energising, effect will be better.Compare with traditional permanent magnet mechanism at last, improved branch, the closing speed of contact of breaker, obtain bigger power producing characteristics, and then satisfy the various characteristics parameter request that primary cut-out closes a floodgate under the 20kV electric pressure.
The present invention has following advantage: 1. parts are few, the reliability height, and power consumption is few.2. the combined floodgate exciting curent is little, with the permanent magnet drive no-float.3. sub-switching operation adopts tripping spring, and opening time is littler, can obtain bigger opening velocity.4. compare with spring operating mechanism, it is better that the contact dynamic characteristic of branch, combined floodgate characteristic and circuit breaker is mated.5. the installation and maintenance debugging is convenient.
Description of drawings
Fig. 1 is a structure chart of the present invention
Among the figure, 1 tripping spring, 2 non-magnet materials, 3 permanent magnets, 4 combined floodgate main coils, 5 yokes, 6 is moving unshakable in one's determination, 7 combined floodgate ancillary coils, 8 magnetic inductive blocks, 9 drive rods.
Fig. 2 is for joining primary cut-out structure chart-"on" position of the present invention;
Fig. 3 is for joining primary cut-out structure chart-gate-dividing state of the present invention.
Among the figure, 10 primary cut-out arc control device, 11 fixed contacts, 12 moving contacts, 13 connecting levers.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
Internal structure of the present invention as shown in Figure 1, comprise tripping spring 1, closing coil, permanent magnet 3, yoke 5, moving iron core 6, magnetic inductive block 8, drive rod 9, non-magnet material 2, moving iron core 6 and 5 settings of yoke are around moving unshakable in one's determination 6 closing coil and permanent magnet 3, permanent magnet 3 is positioned at the closing coil top, closing coil comprises the main and auxiliary index contour circle of the combined floodgate of mutual parallel connection, combined floodgate main coil 4 be centered around combined floodgate ancillary coil 7 around, be equipped with selector switch on the combined floodgate main coil 4, the number of turn of main coil 4 is 2 times of ancillary coil 7 numbers of turn.Tripping spring 1 is in topmost, and an end is connected with fixed mount, and the other end connects with drive rod 9; Yoke 5 comprises upper end cover, and non-magnet material 2 is a nylon block, is filled in yoke 5 upper end cover bottoms, plays non-magnetic conduction effect; Magnetic inductive block 8 is filled between permanent magnet 3 and moving unshakable in one's determination 6, makes magnetic circuit even.Moving iron core 6 is moving components unique in the entire mechanism, generally adopts low-carbon steel material, and drive rod 9 links together with moving unshakable in one's determination 6, and they make circuit breaker change at separating brake and between closing a floodgate.
For the ease of analyzing, Fig. 2 has provided the structure diagram that Monostable permanent magnetism operating mechanism is connected with 20kV level primary cut-out body among Fig. 1 with Fig. 3.Among Fig. 2, moving contact 11 and fixed contact 12 contact, and when not having electric current to pass through in combined floodgate main coil 4 and the ancillary coil 7, the low magnetoimpedance passage that permanent magnet 3 utilizes moving unshakable in one's determination 6, yoke 5 and magnetic inductive block 8 to provide will move unshakable in one's determination 6, drive rod 9 and remain on the bottom.This moment, drive rod 9 made primary cut-out remain on closing position by connecting lever 13.
When giving Monostable permanent magnetism operating mechanism separating brake actuating signal, 7 feed reverse current in the combined floodgate ancillary coil, produce magnetomotive force.The magnetic field that magnetic field that combined floodgate ancillary coil 7 produces and permanent magnet 3 produce superposes on moving iron core, and the downward permanent magnetism power that upwards electromagnetic force that combined floodgate ancillary coil 7 produces and permanent magnet 3 produce interacts.When electromagnetic force and permanent magnetism power are cancelled out each other, tripping spring 1 produces pulling force upwards greater than moving unshakable in one's determination 6 downward gravity and frictional force,, under the effect of tripping spring 1 pulling force with certain speed drive connecting lever 13 and moving contact 12 move downward together with drive rod 9 this moment moving unshakable in one's determination 6.This moment, the primary cut-out contact was moved to the separating brake position by closing position.
When moving unshakable in one's determination 6 of Monostable permanent magnetism operating mechanism moved to the upper end, the primary cut-out contact was in the separating brake position.Combined floodgate main coil 4 and ancillary coil 7 do not have electric current to pass through, this moment the touch spring of primary cut-out and Monostable permanent magnetism operating mechanism tripping spring 1 will move with joint efforts unshakable in one's determination 6 and drive rod 9 keep upper ends, this moment, connecting lever 13 made contact of breaker remain on separating brake position (as shown in Figure 3).
When giving Monostable permanent magnetism operating mechanism feed motion signal, combined floodgate main coil and ancillary coil 4 and 7 feed forward current, produce magnetomotive force.The magnetic field superposition that magnetic field that combined floodgate main coil 4, ancillary coil 7 produce and permanent magnet 3 produce.When electric current reaches certain value, closing coil produces downward electromagnetic force and produces pulling force upwards greater than tripping spring 1,, under effect that the electromagnetism of closing coil and permanent magnet 3 generations make a concerted effort with certain speed drive connecting lever 13 and moving contact 12 move downward together with drive rod 9 this moment moving unshakable in one's determination 6.This moment, the primary cut-out contact was moved to closing position by the separating brake position.
Claims (8)
1, a kind of Monostable permanent magnetism operating mechanism, comprise closing coil, permanent magnet, yoke, moving unshakable in one's determination, be provided with between moving iron core and yoke around moving closing coil and permanent magnet unshakable in one's determination, permanent magnet is positioned at the closing coil top, it is characterized in that closing coil comprises the main and auxiliary index contour circle of combined floodgate of mutual parallel connection, the combined floodgate main coil be centered around the combined floodgate ancillary coil around.
2, Monostable permanent magnetism operating mechanism as claimed in claim 1 is characterized in that also comprising the magnetic inductive block that is positioned at the permanent magnet inboard, and described magnetic inductive block is around moving unshakable in one's determination.
3, Monostable permanent magnetism operating mechanism as claimed in claim 2 is characterized in that magnetic inductive block is filled between permanent magnet and the moving iron core.
4, Monostable permanent magnetism operating mechanism as claimed in claim 1 is equipped with selector switch on it is characterized in that closing a floodgate main coil and/or the ancillary coil.
5, Monostable permanent magnetism operating mechanism as claimed in claim 4 is equipped with selector switch on the main coil that it is characterized in that closing a floodgate.
6, as each described Monostable permanent magnetism operating mechanism among the claim 1-5, it is characterized in that also comprising non-magnet material, described yoke comprises the yoke upper end cover, and non-magnet material is filled in yoke upper end cover bottom.
7, as each described Monostable permanent magnetism operating mechanism among the claim 1-5, the main coil number of turn that it is characterized in that closing a floodgate is 2.2～2.8 times of the ancillary coil number of turn.
8, Monostable permanent magnetism operating mechanism as claimed in claim 7, the main coil number of turn that it is characterized in that closing a floodgate are 2 times of the ancillary coil number of turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102435271A CN101447365A (en) | 2008-12-19 | 2008-12-19 | Monostable permanent magnetism operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102435271A CN101447365A (en) | 2008-12-19 | 2008-12-19 | Monostable permanent magnetism operating mechanism |
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| Publication Number | Publication Date |
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| CN101447365A true CN101447365A (en) | 2009-06-03 |
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| CNA2008102435271A Pending CN101447365A (en) | 2008-12-19 | 2008-12-19 | Monostable permanent magnetism operating mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426974A (en) * | 2011-11-18 | 2012-04-25 | 埃尔凯电器（珠海）有限公司 | Dual-brake-separating speed permanent magnetic operating mechanism and vacuum circuit breaker |
| CN104246923A (en) * | 2012-03-16 | 2014-12-24 | 黑格电子股份有限公司 | Electromagnetic actuator having controlled impedance |
| CN107833783A (en) * | 2017-09-21 | 2018-03-23 | 西安交通大学 | The powder operation device and its actuating method of a kind of dc circuit breaker |
| CN108630506A (en) * | 2017-11-14 | 2018-10-09 | 佳电气有限公司 | Bypass module and leakage circuit breakers for leakage circuit breakers |
| CN108807097A (en) * | 2018-05-24 | 2018-11-13 | 平高集团有限公司 | Operating mechanism control method and divide-shut brake driving device and breaker |
-
2008
- 2008-12-19 CN CNA2008102435271A patent/CN101447365A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426974A (en) * | 2011-11-18 | 2012-04-25 | 埃尔凯电器（珠海）有限公司 | Dual-brake-separating speed permanent magnetic operating mechanism and vacuum circuit breaker |
| CN104246923A (en) * | 2012-03-16 | 2014-12-24 | 黑格电子股份有限公司 | Electromagnetic actuator having controlled impedance |
| CN104246923B (en) * | 2012-03-16 | 2016-12-14 | 黑格电子股份有限公司 | There is the electromagnetic actuators of controlled impedance |
| CN107833783A (en) * | 2017-09-21 | 2018-03-23 | 西安交通大学 | The powder operation device and its actuating method of a kind of dc circuit breaker |
| CN108630506A (en) * | 2017-11-14 | 2018-10-09 | 佳电气有限公司 | Bypass module and leakage circuit breakers for leakage circuit breakers |
| CN108807097A (en) * | 2018-05-24 | 2018-11-13 | 平高集团有限公司 | Operating mechanism control method and divide-shut brake driving device and breaker |
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Open date: 20090603 |