CN102881493A - Electromagnetic vortex repulsion quick arc extinguishing switch - Google Patents
Electromagnetic vortex repulsion quick arc extinguishing switch Download PDFInfo
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- CN102881493A CN102881493A CN2012103864478A CN201210386447A CN102881493A CN 102881493 A CN102881493 A CN 102881493A CN 2012103864478 A CN2012103864478 A CN 2012103864478A CN 201210386447 A CN201210386447 A CN 201210386447A CN 102881493 A CN102881493 A CN 102881493A
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- push rod
- moving contact
- electromagnetic eddy
- diameter end
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Abstract
The invention relates to an electromagnetic vortex repulsion quick arc extinguishing switch. The switch comprises a fixed contact, a moving contact opposite to the fixed contact, and an electromagnetic vortex repulsion mechanism connected with the moving contact, wherein the fixed contact is connected with a high voltage bus; the moving contact is connected with a ground bus; the electromagnetic vortex repulsion mechanism consists of a stepped push rod, a coil disc and a metal disc which are sleeved at the small-diameter end of the push rod, and a permanent magnetic disc sleeved at the large-diameter end of the push rod; the large-diameter end of the push rod is connected with the moving contact; an opening keeping clamping spring is arranged at the small-diameter end of the push rod; the coil disc is connected in series with an energy storage circuit; and the metal disc is positioned between the coil disc and the permanent magnetic disc. The switch has a simple structure and is low in cost and high in arc extinguishing action speed, the capability of protecting internal fault arc by a switch cabinet is obviously improved, switchgear and personnel are timely and effectively protected, the outage time of the switchgear is greatly shortened, the maintenance cost of the switchgear is greatly reduced, and the release of arcing gas is reduced to the greatest extent.
Description
Technical field
The present invention relates to a kind of electromagnetic eddy repulsion fast arc extinction switch, be applicable to switchgear.
Background technology
Switchgear the internal arc fault can occur because of insulation defect, arc fault can cause serious destruction, and for example internal pressure, temperature sharply rise, local temperature can reach 20000 ℃, metal and the gasification/burn of insulating material, object splash and toxic gas discharge, operating maintenance personnel's injury and the damage of switchgear.The general higher level's breaker open operation that adopts of tradition is to reach arc quenching effect, arc extinguishing slow motion, extinguish arcs, in time protection switch equipment and personal safety in rear 30ms ~ 40ms occurs arc fault.For better protection switch equipment and personal safety; occurred at present adopting the fast arc extinction device to come to provide more protection for switchgear; its arc extinguishing operate time is 4ms ~ 8ms; the principle of fast arc extinction device is when medium-voltage equipment generation internal arc fault; with the direct ground short circuit of system's three-phase; extinguish fast fault electric arc, thereby protective efficient switch equipment is avoided thermal effect and mechanical stress is damaged, ensure operating maintenance personnel's personal safety.This shows, arc extinguishing operate time is more short more to be conducive to protection switch equipment and personal safety, so those skilled in the art unanimously are devoted to shorten arc extinguishing operate time, the time of namely finishing feed motion.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of arc extinguishing extremely short electromagnetic eddy repulsion fast arc extinction switch operate time.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of electromagnetic eddy repulsion fast arc extinction switch, comprise fixed contact, the moving contact that is oppositely arranged with fixed contact and the electromagnetic eddy repulsive force mechanism that is connected with moving contact, described fixed contact is connected with high voltage bus, described moving contact is connected with earth bus, described electromagnetic eddy repulsive force mechanism is by stair-stepping push rod, the permanent magnetic disk composition that is sheathed on coil panel and the metal dish of push rod miner diameter end and is sheathed on the push rod bigger diameter end, described push rod bigger diameter end is connected with moving contact, described push rod miner diameter end is provided with separating brake and keeps jump ring, described coil panel is connected in series in the tank circuit, and described metal dish is between coil panel and permanent magnetic disk.
Preferably, described fixed contact is fixedly installed on the upper bracket, described electromagnetic eddy repulsive force mechanism is arranged on the undersetting, described upper bracket links into an integrated entity through some eradication edge pull bars and undersetting, fagging in the middle of being fixedly installed between the described insulated tension pole, fagging downside in the middle of described permanent magnetic disk is fixedly installed on, described separating brake keep jump ring to be arranged at the undersetting downside.
Preferably, to be coated on vacuum extinction indoor in the docking end of described fixed contact and moving contact.
Preferably, described permanent magnetic disk is comprised of magnetic conductive disk and the permanent magnet that is arranged in the magnetic conductive disk.
Preferably, described metal dish is by being formed by stacking near the electrical pure iron dish of permanent magnetic disk and the copper dish of close coil panel.
Preferably, be provided with the guide pin bushing that matches with the push rod bigger diameter end in the middle through-hole of described permanent magnetic disk.
Preferably, described tank circuit is in series by storage capacitor, thyristor and resistance, and described resistance is comprised of storage capacitor dead resistance and thyristor conducting resistance.
The present invention has the following advantages: this electromagnetic eddy repulsion fast arc extinction construction of switch is simple, cost is lower and the arc extinguishing action is fast; by the electromagnetic eddy repulsive force mechanism so that fixed contact and moving contact are finished feed motion at 3ms in the time; it is pioneering that this technical indicator belongs at home; significantly improve switch cubicle to the protective capacities of internal arc; more timely, more effectively protection switch equipment and personal safety; greatly reduce equipment interruption duration and maintenance cost, farthest reduce the release of arcing gas.
Description of drawings
Fig. 1 is the organigram of the embodiment of the invention.
Among the figure: 1-upper bracket, 2-high voltage bus, 3-fixed contact, 4-insulated tension pole, the 5-moving contact, 6-earth bus, 7-permanent magnetic disk, 7-1-magnetic conductive disk, the 7-2-permanent magnet, 8-metal dish, 8-1-electrical pure iron dish, 8-2-copper dish, the 9-coil panel, the 10-undersetting, the 11-separating brake keeps jump ring, 12-push rod, fagging in the middle of the 13-, 14-guide pin bushing, 15-vacuum interrupter, the C-storage capacitor, SCR-thyristor, R-resistance.
Embodiment
The present invention is further elaborated below in conjunction with drawings and Examples.
With reference to figure 1, a kind of electromagnetic eddy repulsion fast arc extinction switch, comprise fixed contact 3, the moving contact 5 that is oppositely arranged with fixed contact 3 and the electromagnetic eddy repulsive force mechanism that is connected with moving contact 5, the docking end of described fixed contact 3 and moving contact 5 is coated in the vacuum interrupter 15, described fixed contact 3 is connected with high voltage bus 2, described moving contact 5 is connected with earth bus 6, described electromagnetic eddy repulsive force mechanism is by stair-stepping push rod 12, permanent magnetic disk 7 compositions that are sheathed on coil panel 9 and the metal dish 8 of push rod 12 miner diameter ends and are sheathed on push rod 12 bigger diameter ends, described push rod 12 bigger diameter ends are connected with moving contact 5, described push rod 12 miner diameter ends are provided with separating brake and keep jump ring 11, described coil panel 9 is connected in series in the tank circuit, and described metal dish 8 is between coil panel 9 and permanent magnetic disk 7.
In the present embodiment, described fixed contact 3 is fixedly installed on the upper bracket 1, described electromagnetic eddy repulsive force mechanism is arranged on the undersetting 10, described upper bracket 1 links into an integrated entity with undersetting 10 through some eradication edge pull bars 4, fagging 13 in the middle of being fixedly installed between the described insulated tension pole 4, fagging 13 downsides in the middle of described permanent magnetic disk 7 is fixedly installed on, described separating brake keep jump ring 11 to be arranged at undersetting 10 downsides.
In the present embodiment, described permanent magnetic disk 7 is comprised of magnetic conductive disk 7-1 and the permanent magnet 7-2 that is arranged in the magnetic conductive disk 7-1, and described metal dish 8 is by being formed by stacking near the electrical pure iron dish 8-1 of permanent magnetic disk 7 and the copper dish 8-2 of close coil panel 9.
In the present embodiment, be provided with the guide pin bushing 14 that matches with push rod 12 bigger diameter ends in the middle through-hole of described permanent magnetic disk 7, the three-phase short circuit grounding assembly that described moving contact 5, push rod 12, electrical pure iron dish 8-1, copper dish 8-2 and earth bus 6 form is installed in the guide pin bushing 14, can freely move up and down guide pin bushing 14 is interior; During assembling, move grounding assembly to sub-gate position, keep jump ring 11 fixing by separating brake.
In the present embodiment, described tank circuit is in series by storage capacitor C, thyristor SCR and resistance R, and described resistance R is comprised of storage capacitor dead resistance and thyristor conducting resistance.
Operation principle of the present invention is as follows: be in sub-gate position after this electromagnetic eddy repulsion fast arc extinction switch assembling, first storage capacitor C is full of during work, then trigger to thyristor SCR by the control triggering signal, storage capacitor C moment is to coil panel 9 discharges after the thyristor SCR conducting, this moment, coil panel 9 axially produced the magnetic field that increases rapidly, according to Lenz's theorem, metal dish 8 is this variation of opposing, will moment itself respond to the very large eddy current of generation.Because the acting in conjunction of eddy current and coil panel 9 electric currents, between coil panel 9 and copper dish 8-2, produce very large electromagnetic repulsion force, copper dish 8-2 moves upward at a high speed under the electromagnetic repulsion force effect, advance moving contact 5 high-speed motions, finish feed motion (it is first that this technical indicator belongs at home) in the time at 3ms.After moving contact 5 closed a floodgate and puts in place, electrical pure iron dish 8-1 produced very strong closing force near permanent magnetic strong magnetic iron, and this closing force passes to moving contact 5 by push rod 12, produced enough contact forces between the dynamic and static contact, made switch can carry rated short circuit current.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. electromagnetic eddy repulsion fast arc extinction switch, it is characterized in that: comprise fixed contact, the moving contact that is oppositely arranged with fixed contact and the electromagnetic eddy repulsive force mechanism that is connected with moving contact, described fixed contact is connected with high voltage bus, described moving contact is connected with earth bus, described electromagnetic eddy repulsive force mechanism is by stair-stepping push rod, the permanent magnetic disk composition that is sheathed on coil panel and the metal dish of push rod miner diameter end and is sheathed on the push rod bigger diameter end, described push rod bigger diameter end is connected with moving contact, described push rod miner diameter end is provided with separating brake and keeps jump ring, described coil panel is connected in series in the tank circuit, and described metal dish is between coil panel and permanent magnetic disk.
2. electromagnetic eddy repulsion fast arc extinction switch according to claim 1, it is characterized in that: described fixed contact is fixedly installed on the upper bracket, described electromagnetic eddy repulsive force mechanism is arranged on the undersetting, described upper bracket links into an integrated entity through some eradication edge pull bars and undersetting, fagging in the middle of being fixedly installed between the described insulated tension pole, fagging downside in the middle of described permanent magnetic disk is fixedly installed on, described separating brake keep jump ring to be arranged at the undersetting downside.
3. electromagnetic eddy repulsion fast arc extinction switch according to claim 1 and 2, it is characterized in that: it is indoor that the docking end of described fixed contact and moving contact is coated on vacuum extinction.
4. electromagnetic eddy repulsion fast arc extinction switch according to claim 1 and 2 is characterized in that: described permanent magnetic disk is comprised of magnetic conductive disk and the permanent magnet that is arranged in the magnetic conductive disk.
5. electromagnetic eddy repulsion fast arc extinction switch according to claim 1 and 2 is characterized in that: described metal dish is by being formed by stacking near the electrical pure iron dish of permanent magnetic disk with near the copper dish of coil panel.
6. electromagnetic eddy repulsion fast arc extinction switch according to claim 1 and 2 is characterized in that: be provided with the guide pin bushing that matches with the push rod bigger diameter end in the middle through-hole of described permanent magnetic disk.
7. electromagnetic eddy repulsion fast arc extinction switch according to claim 1 and 2, it is characterized in that: described tank circuit is in series by storage capacitor, thyristor and resistance, and described resistance is comprised of storage capacitor dead resistance and thyristor conducting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210386447.8A CN102881493B (en) | 2012-10-13 | 2012-10-13 | Electromagnetic vortex repulsion quick arc extinguishing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210386447.8A CN102881493B (en) | 2012-10-13 | 2012-10-13 | Electromagnetic vortex repulsion quick arc extinguishing switch |
Publications (2)
| Publication Number | Publication Date |
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| CN102881493A true CN102881493A (en) | 2013-01-16 |
| CN102881493B CN102881493B (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210386447.8A Expired - Fee Related CN102881493B (en) | 2012-10-13 | 2012-10-13 | Electromagnetic vortex repulsion quick arc extinguishing switch |
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| CN (1) | CN102881493B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103681090A (en) * | 2013-11-22 | 2014-03-26 | 国家电网公司 | Quick vacuum circuit breaker |
| CN103985578A (en) * | 2013-02-13 | 2014-08-13 | 欧姆龙株式会社 | Switching device |
| WO2015003370A1 (en) * | 2013-07-11 | 2015-01-15 | 西门子公司 | Magnetic actuator |
| CN104393577A (en) * | 2014-11-12 | 2015-03-04 | 南京南瑞继保电气有限公司 | Fast arc extinguisher, arc protection system and control method |
| CN106463283A (en) * | 2014-05-19 | 2017-02-22 | Abb瑞士股份有限公司 | High speed limiting electrical switchgear device |
| CN106601545A (en) * | 2017-02-27 | 2017-04-26 | 大连理工大学 | Novel vacuum interrupter structure |
| CN109616375A (en) * | 2018-12-29 | 2019-04-12 | 国网湖南省电力有限公司 | The application method of fast arc extinction device, mesolow metal switch cabinet and fast arc extinction device |
| CN112951651A (en) * | 2021-01-28 | 2021-06-11 | 中国人民解放军海军工程大学 | Short-circuit current self-driven quick switch |
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| CN201478216U (en) * | 2009-08-25 | 2010-05-19 | 北京四方华能电气设备有限公司 | Quick control mechanism of permanent-magnetic circuit breaker |
| WO2012020528A1 (en) * | 2010-08-11 | 2012-02-16 | 富士電機機器制御株式会社 | Contact device, and electromagnetic switch using same |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985578A (en) * | 2013-02-13 | 2014-08-13 | 欧姆龙株式会社 | Switching device |
| WO2015003370A1 (en) * | 2013-07-11 | 2015-01-15 | 西门子公司 | Magnetic actuator |
| US9576714B2 (en) | 2013-07-11 | 2017-02-21 | Siemens Aktiengesellschaft | Magnetic actuator |
| CN103681090A (en) * | 2013-11-22 | 2014-03-26 | 国家电网公司 | Quick vacuum circuit breaker |
| CN106463283A (en) * | 2014-05-19 | 2017-02-22 | Abb瑞士股份有限公司 | High speed limiting electrical switchgear device |
| CN106463283B (en) * | 2014-05-19 | 2018-12-21 | Abb瑞士股份有限公司 | High speed limitation electric switch equipment |
| CN104393577A (en) * | 2014-11-12 | 2015-03-04 | 南京南瑞继保电气有限公司 | Fast arc extinguisher, arc protection system and control method |
| CN106601545A (en) * | 2017-02-27 | 2017-04-26 | 大连理工大学 | Novel vacuum interrupter structure |
| CN109616375A (en) * | 2018-12-29 | 2019-04-12 | 国网湖南省电力有限公司 | The application method of fast arc extinction device, mesolow metal switch cabinet and fast arc extinction device |
| CN112951651A (en) * | 2021-01-28 | 2021-06-11 | 中国人民解放军海军工程大学 | Short-circuit current self-driven quick switch |
Also Published As
| Publication number | Publication date |
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| CN102881493B (en) | 2015-03-04 |
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Granted publication date: 20150304 Termination date: 20211013 |