CN102881493B - Electromagnetic vortex repulsion quick arc extinguishing switch - Google Patents
Electromagnetic vortex repulsion quick arc extinguishing switch Download PDFInfo
- Publication number
- CN102881493B CN102881493B CN201210386447.8A CN201210386447A CN102881493B CN 102881493 B CN102881493 B CN 102881493B CN 201210386447 A CN201210386447 A CN 201210386447A CN 102881493 B CN102881493 B CN 102881493B
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- push rod
- diameter end
- moving contact
- permanent magnetic
- fixed contact
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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 there will be interior unit cell model because of insulation defect, arc fault can cause serious destruction, such as internal pressure, temperature sharply rise, local temperature can reach 20000 DEG C, the gasification/burn of metal and insulating material, object splash and toxic gas release, the injury of operating maintenance personnel and the damage of switchgear.The general higher level's breaker open operation that adopts of tradition is to reach arc quenching effect, and arc extinguishing slow motion, extinguish arcs in 30ms ~ 40ms after arc fault occurs, cannot protection switch equipment and personal safety in time.In order to protection switch equipment and personal safety better; occur at present adopting fast arc extinction device 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 interior unit cell model; by direct for system three-phase ground short circuit; extinguish fast fault electric arc, thus protective efficient switch equipment damages from thermal effect and mechanical stress, ensures the personal safety of operating maintenance personnel.As can be seen here, arc extinguishing operate time is more short is more conducive to protection switch equipment and personal safety, and therefore those skilled in the art are unanimously devoted to shorten arc extinguishing operate time, namely complete the time of feed motion.
Summary of the invention
The electromagnetic eddy repulsion fast arc extinction switch that the technical problem to be solved in the present invention is to provide a kind of arc extinguishing operate time extremely short.
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 be oppositely arranged with fixed contact and the electromagnetic eddy repulsive force mechanism be 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, be sheathed on the coil panel of push rod miner diameter end and metal dish and be sheathed on the permanent magnetic disk composition of 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 tank circuit, described metal dish is between coil panel and permanent magnetic disk.
Preferably, described fixed contact is fixedly installed on upper bracket, described electromagnetic eddy repulsive force mechanism is arranged on undersetting, described upper bracket links into an integrated entity through some insulated tension poles and undersetting, middle fagging is fixedly installed between described insulated tension pole, described permanent magnetic disk is fixedly installed on the downside of middle fagging, and described separating brake keeps jump ring to be arranged on the downside of undersetting.
Preferably, the docking end of described fixed contact and moving contact is coated on vacuum extinction indoor.
Preferably, described permanent magnetic disk is made up of magnetic conductive disk and the permanent magnet be arranged in magnetic conductive disk.
Preferably, described metal dish is formed by stacking by the electrical pure iron dish near permanent magnetic disk and the copper dish near coil panel.
Preferably, the guide pin bushing matched with push rod bigger diameter end is provided with in the middle through-hole of described permanent magnetic disk.
Preferably, described tank circuit is formed by storage capacitor, thyristor and resistant series, and described resistance is made up of storage capacitor dead resistance and turn on thyristors resistance.
The present invention has the following advantages: this electromagnetic eddy repulsion fast arc extinction construction of switch is simple, cost is lower and arc extinguishing action is fast; fixed contact and moving contact is made to complete feed motion within the 3ms time by electromagnetic eddy repulsive force mechanism; this technical indicator belongs to pioneering at home; significantly improve the protective capacities of switch cubicle to internal arc; more in time, more effectively protection switch equipment and personal safety; greatly reduce equipment interruption duration and maintenance cost, farthest reduce the release of arcing gas.
Accompanying drawing explanation
Fig. 1 is the organigram of the embodiment of the present invention.
In figure: 1-upper bracket, 2-high voltage bus, 3-fixed contact, 4-insulated tension pole, 5-moving contact, 6-earth bus, 7-permanent magnetic disk, 7-1-magnetic conductive disk, 7-2-permanent magnet, 8-metal dish, 8-1-electrical pure iron dish, 8-2-copper dish, 9-coil panel, 10-undersetting, 11-separating brake keeps jump ring, 12-push rod, fagging in the middle of 13-, 14-guide pin bushing, 15-vacuum interrupter, C-storage capacitor, SCR-thyristor, R-resistance.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further elaborated.
With reference to figure 1, a kind of electromagnetic eddy repulsion fast arc extinction switch, comprise fixed contact 3, the moving contact 5 be oppositely arranged with fixed contact 3 and the electromagnetic eddy repulsive force mechanism be connected with moving contact 5, the docking end of described fixed contact 3 and moving contact 5 is coated in 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, the permanent magnetic disk 7 being sheathed on the coil panel 9 of push rod 12 miner diameter end and metal dish 8 and being sheathed on push rod 12 bigger diameter end forms, described push rod 12 bigger diameter end is connected with moving contact 5, described push rod 12 miner diameter end is provided with separating brake and keeps jump ring 11, described coil panel 9 is connected in series in tank circuit, 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 upper bracket 1, described electromagnetic eddy repulsive force mechanism is arranged on undersetting 10, described upper bracket 1 links into an integrated entity through some insulated tension poles 4 and undersetting 10, middle fagging 13 is fixedly installed between described insulated tension pole 4, described permanent magnetic disk 7 is fixedly installed on the downside of middle fagging 13, and described separating brake keeps jump ring 11 to be arranged on the downside of undersetting 10.
In the present embodiment, described permanent magnetic disk 7 is made up of magnetic conductive disk 7-1 and the permanent magnet 7-2 be arranged in magnetic conductive disk 7-1, and described metal dish 8 is formed by stacking by the electrical pure iron dish 8-1 near permanent magnetic disk 7 and the copper dish 8-2 near coil panel 9.
In the present embodiment, the guide pin bushing 14 matched with push rod 12 bigger diameter end is provided with 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 arranged in guide pin bushing 14, freely can move up and down in guide pin bushing 14; During assembling, move grounding assembly to sub-gate position, keep jump ring 11 to fix 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 made up of storage capacitor dead resistance and turn on thyristors resistance.
Operation principle of the present invention is as follows: be in sub-gate position after the assembling of this electromagnetic eddy repulsion fast arc extinction switch, first storage capacitor C is full of during work, then trigger to thyristor SCR by controlling triggering signal, after thyristor SCR conducting, storage capacitor C moment discharges to coil panel 9, now coil panel 9 is axially producing the magnetic field increased rapidly, according to Lenz's theorem, metal dish 8 is this change of opposing, moment will produce very large eddy current in itself induction.Due to the acting in conjunction of eddy current and coil panel 9 electric current, very large electromagnetic repulsion force is produced between coil panel 9 and copper dish 8-2, copper dish 8-2 moves upward at a high speed under electromagnetic repulsion force effect, advance moving contact 5 high-speed motion, within the 3ms time, complete feed motion (this technical indicator belongs to first at home).After moving contact 5 closes a floodgate and puts in place, electrical pure iron dish 8-1 is near permanent magnetic strong magnetic iron, and produce very strong closing force, this closing force passes to moving contact 5 by push rod 12, produces enough contact forces between dynamic and static contact, enables switch carry rated short circuit current.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (2)
1. an electromagnetic eddy repulsion fast arc extinction switch, it is characterized in that: comprise fixed contact, the moving contact be oppositely arranged with fixed contact and the electromagnetic eddy repulsive force mechanism be connected with moving contact, the docking end of described fixed contact and moving contact is coated on vacuum extinction indoor, 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, be sheathed on the coil panel of push rod miner diameter end and metal dish and be sheathed on the permanent magnetic disk composition of 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 fixed contact is fixedly installed on upper bracket, described electromagnetic eddy repulsive force mechanism is arranged on undersetting, described upper bracket links into an integrated entity through some insulated tension poles and undersetting, middle fagging is fixedly installed between described insulated tension pole, described permanent magnetic disk is fixedly installed on the downside of middle fagging, and described separating brake keeps jump ring to be arranged on the downside of undersetting, described coil panel is connected in series in tank circuit, described tank circuit is formed by storage capacitor, thyristor and resistant series, described resistance is made up of storage capacitor dead resistance and turn on thyristors resistance, described metal dish is between coil panel and permanent magnetic disk, described metal dish is formed by stacking by the electrical pure iron dish near permanent magnetic disk and the copper dish near coil panel, and described permanent magnetic disk is made up of magnetic conductive disk and the permanent magnet be arranged in magnetic conductive disk.
2. electromagnetic eddy repulsion fast arc extinction switch according to claim 1, is characterized in that: be provided with the guide pin bushing matched with push rod bigger diameter end in the middle through-hole of described permanent magnetic disk.
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 |
|---|---|
| CN102881493A CN102881493A (en) | 2013-01-16 |
| CN102881493B true CN102881493B (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210386447.8A Expired - Fee Related CN102881493B (en) | 2012-10-13 | 2012-10-13 | Electromagnetic vortex repulsion quick arc extinguishing switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN102881493B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6044378B2 (en) * | 2013-02-13 | 2016-12-14 | オムロン株式会社 | Switching device |
| WO2015003370A1 (en) * | 2013-07-11 | 2015-01-15 | 西门子公司 | Magnetic actuator |
| CN103681090A (en) * | 2013-11-22 | 2014-03-26 | 国家电网公司 | Quick vacuum circuit breaker |
| EP3146548B1 (en) * | 2014-05-19 | 2018-12-05 | ABB Schweiz AG | High speed limiting electrical switchgear device |
| 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 |
| CN109616375B (en) * | 2018-12-29 | 2020-11-03 | 国网湖南省电力有限公司 | Rapid arc extinguisher, medium-low voltage metal switch cabinet and application method of rapid arc extinguisher |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102184795A (en) * | 2011-04-12 | 2011-09-14 | 浙宝开关(杭州)有限公司 | Fast vacuum circuit breaker used for protecting high-power power electronic converter |
| CN202839374U (en) * | 2012-10-13 | 2013-03-27 | 福州天宇电气股份有限公司 | Quick arc-extinguishing switch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5437949B2 (en) * | 2010-08-11 | 2014-03-12 | 富士電機機器制御株式会社 | Contact device and electromagnetic contactor using the same |
| JP5884034B2 (en) * | 2011-03-22 | 2016-03-15 | パナソニックＩｐマネジメント株式会社 | Contact device |
-
2012
- 2012-10-13 CN CN201210386447.8A patent/CN102881493B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102184795A (en) * | 2011-04-12 | 2011-09-14 | 浙宝开关(杭州)有限公司 | Fast vacuum circuit breaker used for protecting high-power power electronic converter |
| CN202839374U (en) * | 2012-10-13 | 2013-03-27 | 福州天宇电气股份有限公司 | Quick arc-extinguishing switch |
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| Publication number | Publication date |
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| CN102881493A (en) | 2013-01-16 |
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