CN103560031A - Permanent magnet arc extinction structure of transverse magnetic field - Google Patents
Permanent magnet arc extinction structure of transverse magnetic field Download PDFInfo
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- CN103560031A CN103560031A CN201310567733.9A CN201310567733A CN103560031A CN 103560031 A CN103560031 A CN 103560031A CN 201310567733 A CN201310567733 A CN 201310567733A CN 103560031 A CN103560031 A CN 103560031A
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- magnetic field
- permanent magnet
- arc extinction
- extinction structure
- electric arcs
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Abstract
The invention provides a permanent magnet arc extinction structure of a transverse magnetic field. The permanent magnet arc extinction structure comprises a pair of static contacts which are fixed on a ceramic outer shell. Permanent magnet steel which is opposite in polarity is arranged on the two sides of the ceramic outer shell respectively. The included angle between the connecting line of the centers of the two static contacts and the magnetic field direction of the two pieces of permanent magnet steel is 60-70 degrees. The arc extinction structure aims at bridge type double breakpoints, the magnetic field generated by the two pieces of permanent magnet steel is used, electric arcs are pulled to the ceramic outer shell positions at the upper end and the lower end respectively, so that the electric arcs are cooled quickly and subjected to extinction, the included angle between the connecting line of the centers of the two static contacts and the magnetic field direction is 60-70 degrees, so that the synthesized magnetic field pulls the electric arcs generated on the upper static contact and the lower static contact to the right-upper position and the left-lower position, crossing of adjacent electric arcs is avoided, and meanwhile electric arm quick excursion, stretching and cooling are facilitated. The structure can be used as the arc extinction structure of a disjunction direct current large current contactor.
Description
Technical field
The invention belongs to vaccum electric apparatus field, be specifically related to a kind of permanent magnetism arc extinguishing structure of transverse magnetic field.
Background technology
The contact of contactor is being connected and during disjunction, and when voltage or electric current are higher than playing an isolated value, contact can produce electric arc, thereby contact is produced to erosion, and influencing contactor electric life even causes fault.Large contactor generally can adopt multiple arc quenching method for improving arc extinguishing efficiency, wherein a kind of is blowout coil arc-control device, it is to utilize blowout coil, iron core, magnetic clamping plate to manufacture arc blow-out space, dynamic/static contact is placed in one, and the electric power of utilizing blowout coil to produce is extinguished the arc transfer producing between dynamic/static contact.
The method advantage is to can be used in the major loop of AC/DC contactor, and its shortcoming is to be not suitable for cut-offfing little electric current, and reason is that the electric power that now blowout coil produces is too small.In arc extinguishing process, electric arc there will be intersection while being pulled to two ends by magnetic field, causes security incident in addition.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of permanent magnetism arc extinguishing structure of transverse magnetic field, this structure is for bridge-type double breaking points, the magnetic field that utilizes two permanent magnetic steels to produce, respectively electric arc is pulled to the ceramic package position of upper and lower side, send a telegraph arc rapidly cooling and extinguish, this structure can be used for the arc extinguishing structure as disjunction D.C. high-current contactor.
For solving the problems of the technologies described above, the invention provides a kind of permanent magnetism arc extinguishing structure of transverse magnetic field, the permanent magnetism arc extinguishing structure of transverse magnetic field, comprise a pair of fixed contact, described fixed contact is fixed on ceramic package, ceramic package both sides are respectively equipped with opposite polarity permanent magnetic steel, and the magnetic direction angle of the line at two fixed contact centers and two permanent magnetic steels is 70
o.
For the purpose of concise description problem, below to the permanent magnetism arc extinguishing structure of transverse magnetic field of the present invention all referred to as this structure.
The main body of arc control device is ceramic packages, two fixed contacts are fixed on ceramic package by the mode of soldering, moving contact is positioned at arc control device shell, by mechanism, overlap or separate with fixed contact, two permanent magnetic steels are fixed on ceramic package both sides by bonding mode, the line of centres of two fixed contacts and magnetic direction angle are 60～70 °, resultant magnetic field is moved the electric arc producing on upper and lower static contact respectively to respectively the position of upper right and lower-left like this, avoid the intersection of adjacent arc, be conducive to quick skew, the elongation and cooling of electric arc simultaneously.
The material of two permanent magnetic steels is bonding rubidium iron boron, is conducive to like this bonding of itself and ceramic package, and Rb-Fe-B material has stronger magnetic simultaneously, and magnetic energy product is high, under similarity condition, is conducive to reduced volume, and weight reduction improves the efficiency of arc extinguishing simultaneously.
This structure is mainly for the contact structure of bridge-type double breaking points, emphasis is that the line of centres and the magnetic direction of two fixed contacts exists certain angle, make like this magnetic field of two permanent magnetic steels after stack, the electric arc producing on two fixed contacts (opposite direction) can be extinguished by near the ceramic package pulling to respectively.Solved the phase mutual interference of two permanent magnetic steels and placed a difficult problem.This structure can be used for the arc quenching system of direct current double breaking points, and mechanism is simple, designs ingeniously, has good application prospect.
Described permanent magnetic steel is arranged in the L shaped groove of ceramic package both sides.Can make like this permanent magnetic steel be positioned at groove, make this structure appearance looks elegant, permanent magnetic steel is face contact with contacting of ceramic package, makes permanent magnetic steel more firm with being connected of ceramic package.
Accompanying drawing explanation
Fig. 1 is the vertical view of this structure.
Fig. 2 is the end view of this structure.
Fig. 3 is schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, further illustrate the present invention:
As depicted in figs. 1 and 2, the permanent magnetism arc extinguishing structure of transverse magnetic field, comprise a pair of fixed contact 1(upper static contact 11 and lower fixed contact 12), the mode of fixed contact 1 use soldering is fixed on ceramic package 2, respectively there is a L shaped groove 4 ceramic package 2 both sides, two permanent magnetic steels 3 are bonded in respectively in L shaped groove 4 by opposite polarity mode, and the shape of two permanent magnetic steels 3 and L shaped groove 4 shapes are similar, and the magnetic direction B angle of the line A at two fixed contact 1 centers and two permanent magnetic steels 3 is 70
o.Resultant magnetic field is moved the electric arc of upper static contact 11 and 12 generations of lower fixed contact respectively to respectively the position of upper right and lower-left like this, avoids the intersection of adjacent arc, is conducive to quick skew, the elongation and cooling of electric arc simultaneously.Two permanent magnetic steel 3 materials are bonding rubidium iron boron, are conducive to like this bonding of itself and ceramic package 2, and Rb-Fe-B material has stronger magnetic simultaneously, and magnetic energy product is high, under similarity condition, is conducive to reduced volume, and weight reduction improves the efficiency of arc extinguishing simultaneously.
Fig. 3 is schematic diagram of the present invention, as shown in Fig. 1, the line A at permanent magnetic steel 3, two fixed contact 1 centers has been installed respectively in contactor ceramic package 2 both sides and the magnetic direction B angle of two permanent magnetic steels 3 is 70
o, the polarity of two permanent magnetic steels 3 is contrary, thereby produces a constant permanent magnetic field, and magnetic direction is B, is parallel to paper; Two fixed contacts 1 and moving contact (not shown) are divided and are had no progeny the electric arc direction that produces as shown in a in figure and b, and they are all perpendicular to paper).Electric arc a and b can be improved rapidly movement velocity by externally-applied magnetic field, make electric arc a and b stretch very soon, blow out, thereby reach arc quenching effect fast.
Claims (3)
1. the permanent magnetism arc extinguishing structure of transverse magnetic field, comprise a pair of fixed contact, described fixed contact is fixed on ceramic package, it is characterized in that: ceramic package both sides are respectively equipped with opposite polarity permanent magnetic steel, and the magnetic direction angle of the line at two fixed contact centers and two permanent magnetic steels is 60～70
o.
2. the permanent magnetism arc extinguishing structure of transverse magnetic field as claimed in claim 1, is characterized in that: described permanent magnetic steel is arranged in the groove of ceramic package both sides.
3. the permanent magnetism arc extinguishing structure of transverse magnetic field as claimed in claim 1, is characterized in that: the material of described permanent magnetic steel is rubidium iron boron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310567733.9A CN103560031A (en) | 2013-11-15 | 2013-11-15 | Permanent magnet arc extinction structure of transverse magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310567733.9A CN103560031A (en) | 2013-11-15 | 2013-11-15 | Permanent magnet arc extinction structure of transverse magnetic field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103560031A true CN103560031A (en) | 2014-02-05 |
Family
ID=50014249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310567733.9A Pending CN103560031A (en) | 2013-11-15 | 2013-11-15 | Permanent magnet arc extinction structure of transverse magnetic field |
Country Status (1)
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| CN (1) | CN103560031A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489417A (en) * | 2016-02-05 | 2016-04-13 | 中国电子科技集团公司第四十研究所 | Direct-current high-power electrical appliance switch redundancy arc-extinguishing device |
| CN109243921A (en) * | 2018-09-10 | 2019-01-18 | 上海良信电器股份有限公司 | A kind of permanent magnetism mounting structure of D.C. contactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074387A (en) * | 2009-11-24 | 2011-05-25 | 泰科电子Amp有限责任公司 | Electrical switch |
| JP2011204480A (en) * | 2010-03-25 | 2011-10-13 | Panasonic Electric Works Co Ltd | Contact device |
-
2013
- 2013-11-15 CN CN201310567733.9A patent/CN103560031A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074387A (en) * | 2009-11-24 | 2011-05-25 | 泰科电子Amp有限责任公司 | Electrical switch |
| JP2011204480A (en) * | 2010-03-25 | 2011-10-13 | Panasonic Electric Works Co Ltd | Contact device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489417A (en) * | 2016-02-05 | 2016-04-13 | 中国电子科技集团公司第四十研究所 | Direct-current high-power electrical appliance switch redundancy arc-extinguishing device |
| CN109243921A (en) * | 2018-09-10 | 2019-01-18 | 上海良信电器股份有限公司 | A kind of permanent magnetism mounting structure of D.C. contactor |
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Application publication date: 20140205 |