CN102522259A - Disc-type overlapping gyromagnetic longitudinal blowing vacuum arc extinguish chamber - Google Patents
Disc-type overlapping gyromagnetic longitudinal blowing vacuum arc extinguish chamber Download PDFInfo
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- CN102522259A CN102522259A CN2011104086737A CN201110408673A CN102522259A CN 102522259 A CN102522259 A CN 102522259A CN 2011104086737 A CN2011104086737 A CN 2011104086737A CN 201110408673 A CN201110408673 A CN 201110408673A CN 102522259 A CN102522259 A CN 102522259A
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Abstract
The invention belongs to a vacuum circuit breaker field and especially relates to a disc-type overlapping gyromagnetic longitudinal blowing vacuum arc extinguish chamber. The vacuum arc extinguish chamber comprises: a conducting rod (1), a contact cup (5), an iron core (7) and an electrode (4) which is connected to the contact cup (5). The contact cup (5) is fixedly matched with the conducting rod (1). The iron core (7) is placed in the contact cup (5). The contact cup (5) is provided with a plurality of circulation side slots with equal intervals. The iron core (7) is provided with the winding slots (6) with the equal intervals. More than two groups of the coaxial coil windings (8) are stacked into the winding slots (6) and the coaxial coil windings are staggered with a certain angle theta successively. According to the invention, through a strong force of a rotating magnetic field and simultaneously under an effect of a vertical magnetic field, an arc voltage can be reduced; arc columns are impelled to be uniformly distributed on an anode surface; arc energy release can be accelerated; a breaking capacity of the vacuum circuit breaker can be increased.
Description
Technical field
The invention belongs to the vacuum circuit-breaker field, relate in particular to the vertical vacuum interrupter that blows of the folded formula gyromagnet of a kind of dish-type.
Background technology
Vacuum circuit-breaker because of its arc-extinguishing medium and arc extinguishing after the dielectric in contact gap all be that high vacuum is gained the name; It has volume little, in light weight, be applicable to the advantage that frequent operation, arc extinguishing need not overhaul, in power distribution network, use comparatively universal.Vacuum circuit-breaker is 3～10kV; Indoor distribution in the 50Hz three-phase alternating current system; Can supply in industrial and mining enterprises, power plant, the transformer station usefulness as the protection and the control of electric equipment; Be specially adapted to require not have oiling, the field of employment of few maintenance and frequent operation, circuit breaker is configurable to be used as control and protection high voltage electric equipment in mid-cabinet, double-deck cabinet, stationary cabinet.
The dull and stereotyped contact of disc, transverse magnetic field contact and longitudinal field contact three phases have mainly been experienced in the improvement of vacuum arc-extinguishing chamber contact structure.
(1) the dull and stereotyped contact of disc: the dull and stereotyped structure of contact terminal of disc is simple, and mechanical strength is high, is generally used in vacuum load switch or the vacuum contactor.For the dull and stereotyped contact of disc, when drop-out current was big, spot will appear in anode, and vacuum arc will produce strong shrinkage phenomenon, and metal vapors electric arc will be shrinkage type by diffusion-type transition, and then cause cut-offfing failure.
(2) transverse magnetic field contact: have helicla flute on the contact blade and when electric current flows through contact, will produce a magnetic field vertical with the arc column axis direction.Transverse magnetic field contact and arc current interact and the Lorentz force that produces along the circumferential direction moves electric arc; Transverse magnetic field can elongate the camber in when motion; Make arc voltage and arc energy quantitative change big, cause connecting-disconnecting function to be restricted, and electric arc is strong when the ablation degree of contact still being spread than electric arc when gathering; The density of residue plasma when current over-zero is still higher in the arc gap, the phenomenon of still can restriking when recovery voltage is higher.
(3) longitudinal field contact: its magnetic line of force of longitudinal field contact structure is consistent with the arc current flow direction, the contraction that can resist electric arc, and improving electric arc is the critical value of shrinkage type by diffusion-type transition.Behind current over-zero, the diffusion of longitudinal magnetic field article on plasma body and neutral particle and decay are very unfavorable.The existence of eddy current not only reduces longitudinal magnetic field intensity between contact, and makes longitudinal magnetic field lag behind the electric current variation, still has the residue longitudinal magnetic field when making current over-zero between contact.
Summary of the invention
The present invention is intended to overcome the weak point of prior art and provides that the folded formula gyromagnet of a kind of dish-type is vertical to blow vacuum interrupter, and it can produce the effect of longitudinal magnetic field again when transverse magnetic field is provided; Help the loss of arc energy more; Electric arc temperature drop piece, good insulation preformance, connecting-disconnecting function is strong; Convenient for installation and maintenance, operational reliability is high.
For solving the problems of the technologies described above, the present invention is achieved in that the vertical vacuum interrupter that blows of the folded formula gyromagnet of dish-type, and it comprises conducting rod, contact cup, iron core and the electrode that joins with said contact cup; Said contact cup and conducting rod fixedly connect; Said iron core is inserted in the contact cup; Equal portions have even number circulation side channel on said contact cup; Equal portions have slot for winding on said iron core; Two groups of above coaxial coil windings stack inserts in the slot for winding and the certain angle θ that staggers successively.
As a kind of preferred version, the number of slot for winding according to the invention can be selected 12～30.
As another kind of preferred version, the groove width of slot for winding according to the invention can be selected 2.5～3mm.
Further, coil windings according to the invention radially is scattered in tray type structure radially.
Further, the present invention is fixed with contact blade in the end of said electrode.
Angle θ according to the invention is between 5 °～15 °.
The present invention adopts the contact cup for producing the structure of contact terminal of longitudinal magnetic field, with the superimposed acting in conjunction blow-out of rotating magnetic field of the coil windings generation of adopting tray type structure.
The present invention is behind logical three-phase alternating current, and conduction current flows in the contact cup, through winding coil through conducting rod; In the contact cup, form rotating magnetic field, and through the isostructural contact acting in conjunction of another second phase, owing to exist the coil windings of the formula that staggers to arrange; Magnetic direction in that every group of coil of synchronization produces is also inequality; And the contact acting in conjunction through the opposite side same structure, in intermediate air gap, produced the rotating magnetic field of different rotary frequency, also strengthened the intensity of rotating magnetic field simultaneously.Drive arc energy high speed rotating between dynamic/static contact, the rapid release energy, thus reduce the arcing time, prolong switch life.
The novel contact configurations that the present invention adopted makes the drive of the indoor arc energy of vacuum extinction through rotating magnetic field; Becoming vortical by traditional axial flow flows; Under the longitudinal magnetic field effect, can reduce arc voltage, order about the electric arc arc column and evenly distribute at anode surface; Reduce the current density of regional area, thereby eliminate anode spot or improve the critical electric current value that forms anode spot.Arc energy is taken away in the radially exchange of gas generation kinetic energy fast in motion process, makes arc extinction.Structure of contact terminal of the present invention can effectively reduce arc temperature, quickens arc energy and discharges, and reduces contact ablation degree, and the protection structure of contact terminal improves the vacuum circuit-breaker connecting-disconnecting function.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is an overall structure sketch map of the present invention.
Fig. 2 is iron core fluting sketch map of the present invention.
Fig. 3 is a coil windings sketch map of the present invention.
Fig. 4 is a coaxial coil winding sketch map of the present invention.
Among the figure: 1, conducting rod; 2, the sense of current; 3, contact blade; 4, electrode; 5, contact cup; 6, slot for winding; 7, iron core; 8, coil windings.
Embodiment
As shown in the figure, the vertical vacuum interrupter that blows of the folded formula gyromagnet of dish-type, it comprises conducting rod 1, contact cup 5, iron core 7 and the electrode 4 that joins with said contact cup 5; Said contact cup 5 fixedly connects with conducting rod 1; Said iron core 7 is inserted in the contact cup 5; Equal portions have even number circulation side channel on said contact cup 5; Equal portions have slot for winding 6 on said iron core 7; Two groups of above coaxial coil windings 8 stack inserts in the slot for winding 6 and the certain angle θ that staggers successively.
Can coaxially stack 2～5 groups of coil windings 8 in the iron core 7 according to the invention.Each angle that can stagger successively of coaxial coil windings according to the invention; Get 10 °.
The number of slot for winding 6 according to the invention is 12～30.The groove width of slot for winding 6 according to the invention is 2.5～3mm.Coil windings 8 according to the invention radially is scattered in tray type structure radially.Be the coil windings 8 in the protection contact, the present invention is fixed with contact blade 3 in the end of said electrode 4.
The folded formula gyromagnet of dish-type of the present invention is vertical to blow vacuum interrupter, through the fluting on the contact cup, can the contact cup be equal to the armature with motor, and the active conductor of armature winding radially is scattered in tray type structure radially in the space.Coil windings adopts the copper coin spurt to weld then to make and forms.
Referring to shown in Figure 1, the folded formula gyromagnet of dish-type is vertical to be blown vacuum interrupter and comprises conducting rod 1, contact blade 3, electrode 4 and contact cup 5.
Referring to shown in Figure 2, the present invention places iron core 7 in contact cup (armature) 5, and iron core 7 is whenever opened a slot for winding 6 at a distance from 30 °, and groove width is 2.5mm.
Referring to shown in Figure 3, coil windings 8 of the present invention adopts the copper coin spurt to weld then to make and forms, and radially is scattered in tray type structure radially.
Referring to shown in Figure 4, the present invention overlays one group of coaxial coil winding 8 in the iron core, and the certain angle that staggers.
The present invention all adopts this structure to dynamic and static contact.In interrupting process, arc zone will appear between dynamic and static, through the effect of three-phase alternating current, under the effect of dynamic and static contact coil windings; Rotating magnetic field to occur in contact surface, because vacuum arc is to be made up of metallic plasma, through the effect of electric arc, the arc zone between dynamic and static contact also will produce strong rotating magnetic field; Through the forceful action of rotating magnetic field, take away arc energy fast, under the longitudinal magnetic field effect, can reduce arc voltage; Order about the electric arc arc column and evenly distribute, reduce the current density of regional area, thereby eliminate anode spot or improve the critical electric current value that forms anode spot at anode surface; Effectively reduce arc temperature, quicken arc energy and discharge, reduce contact ablation degree; The protection structure of contact terminal makes arc extinction, improves the vacuum circuit-breaker connecting-disconnecting function.
The present invention can satisfy the requirement of cut-offfing under the special operation condition, and the present invention simultaneously has very strong capacity current connecting-disconnecting function, and through l-G simulation test research, can improve product reliability, safe operation.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the folded formula gyromagnet of dish-type is vertical blows vacuum interrupter, it is characterized in that, comprises conducting rod (1), contact cup (5), iron core (7) and the electrode (4) that joins with said contact cup (5); Said contact cup (5) fixedly connects with conducting rod (1); Said iron core (7) is inserted in the contact cup (5); Go up equal portions at said contact cup (5) and have even number circulation side channel; Go up equal portions at said iron core (7) and have slot for winding (6); Two groups of above coaxial coil windings (8) stack inserts in the slot for winding (6) and the certain angle θ that staggers successively.
2. the folded formula gyromagnet of dish-type according to claim 1 is vertical to blow vacuum interrupter, and it is characterized in that: the number of said slot for winding (6) is 12～30.
3. the folded formula gyromagnet of dish-type according to claim 2 is vertical to blow vacuum interrupter, and it is characterized in that: the groove width of said slot for winding (6) is 2.5～3mm.
4. the folded formula gyromagnet of dish-type according to claim 3 is vertical to blow vacuum interrupter, and it is characterized in that: said coil windings (8) radially is scattered in tray type structure radially.
5. the folded formula gyromagnet of dish-type according to claim 4 is vertical to blow vacuum interrupter, and it is characterized in that: the end at said electrode (4) is fixed with contact blade.
6. the folded formula gyromagnet of dish-type according to claim 5 is vertical to blow vacuum interrupter, and it is characterized in that: said angle θ is between 5 °～15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408673.7A CN102522259B (en) | 2011-12-09 | 2011-12-09 | Disc-type overlapping gyromagnetic longitudinal blowing vacuum arc extinguish chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408673.7A CN102522259B (en) | 2011-12-09 | 2011-12-09 | Disc-type overlapping gyromagnetic longitudinal blowing vacuum arc extinguish chamber |
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| Publication Number | Publication Date |
|---|---|
| CN102522259A true CN102522259A (en) | 2012-06-27 |
| CN102522259B CN102522259B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110408673.7A Active CN102522259B (en) | 2011-12-09 | 2011-12-09 | Disc-type overlapping gyromagnetic longitudinal blowing vacuum arc extinguish chamber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538237A (en) * | 2014-12-31 | 2015-04-22 | 北京双杰电气股份有限公司 | Grounding switch contact and direct movement plug-in type grounding switch with grounding switch contact |
| CN104779521A (en) * | 2014-01-14 | 2015-07-15 | 施耐德电器工业公司 | Electrode and Category I surge voltage protector comprising electrode |
| CN109964297A (en) * | 2016-11-21 | 2019-07-02 | 伊顿智能动力有限公司 | Vacuum switchgear and its electrical contact |
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| JPH0785754A (en) * | 1992-11-10 | 1995-03-31 | Mitsubishi Electric Corp | Vacuum valve |
| CN1218585A (en) * | 1996-05-21 | 1999-06-02 | 可视计算体系有限公司 | Interlocking segmented coil array |
| CN1351361A (en) * | 2000-09-27 | 2002-05-29 | Lg产电株式会社 | Circuit breaker with mixed arc eliminator |
| CN2751426Y (en) * | 2004-12-02 | 2006-01-11 | 西安交通大学 | Cup-type axial magnetic vacuum arc extinguish chamber contact with iron core |
| CN201025588Y (en) * | 2006-01-13 | 2008-02-20 | 熊成锐 | A motive magnetic field generation device for controlling and dispersing harmful plasm in industrial production |
| CN202332706U (en) * | 2011-12-09 | 2012-07-11 | 沈阳工业大学 | Disc-shaped overlapped type rotating magnetic vertical-blowing vacuum arc extinguish chamber |
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2011
- 2011-12-09 CN CN201110408673.7A patent/CN102522259B/en active Active
Patent Citations (6)
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| JPH0785754A (en) * | 1992-11-10 | 1995-03-31 | Mitsubishi Electric Corp | Vacuum valve |
| CN1218585A (en) * | 1996-05-21 | 1999-06-02 | 可视计算体系有限公司 | Interlocking segmented coil array |
| CN1351361A (en) * | 2000-09-27 | 2002-05-29 | Lg产电株式会社 | Circuit breaker with mixed arc eliminator |
| CN2751426Y (en) * | 2004-12-02 | 2006-01-11 | 西安交通大学 | Cup-type axial magnetic vacuum arc extinguish chamber contact with iron core |
| CN201025588Y (en) * | 2006-01-13 | 2008-02-20 | 熊成锐 | A motive magnetic field generation device for controlling and dispersing harmful plasm in industrial production |
| CN202332706U (en) * | 2011-12-09 | 2012-07-11 | 沈阳工业大学 | Disc-shaped overlapped type rotating magnetic vertical-blowing vacuum arc extinguish chamber |
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| 赵迎喜: "一种杯状横磁触头结构真空灭弧室的研制", 《中国优秀硕士学位论文全文数据库（电子期刊）工程科技Ⅱ辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779521A (en) * | 2014-01-14 | 2015-07-15 | 施耐德电器工业公司 | Electrode and Category I surge voltage protector comprising electrode |
| CN104779521B (en) * | 2014-01-14 | 2017-08-11 | 施耐德电器工业公司 | Electrode and the type I surge voltage protectors including the electrode |
| CN104538237A (en) * | 2014-12-31 | 2015-04-22 | 北京双杰电气股份有限公司 | Grounding switch contact and direct movement plug-in type grounding switch with grounding switch contact |
| CN109964297A (en) * | 2016-11-21 | 2019-07-02 | 伊顿智能动力有限公司 | Vacuum switchgear and its electrical contact |
| CN109964297B (en) * | 2016-11-21 | 2021-11-02 | 伊顿智能动力有限公司 | Vacuum switching device and electrical contact therefor |
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| Publication number | Publication date |
|---|---|
| CN102522259B (en) | 2015-07-15 |
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