CN102522257B - Disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber - Google Patents
Disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber Download PDFInfo
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- CN102522257B CN102522257B CN201110408481.6A CN201110408481A CN102522257B CN 102522257 B CN102522257 B CN 102522257B CN 201110408481 A CN201110408481 A CN 201110408481A CN 102522257 B CN102522257 B CN 102522257B
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Abstract
The invention belongs to the field of the vacuum circuit breaker, which particularly relates to a disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber. The disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber comprises a conducting rod (1), a contact cup (5), an iron core (7) and an electrode (4) connected with the contact cup (5), wherein the contact cup (5) and the conducting rod (1) are fixedly adapted; the iron core (7) is arranged in the contact cup (5); the contact cup (5) is equally provided with even ring current side channels; the iron core (7) is equally provided with winding channels (6); a coil winding (8) is arranged in each winding channel (6), wherein the number of the winding channels (6) is 12-30, and the width of the winding channel (6) is 2.5-3mm; and the coil windings (8) are distributed in a radiating mode to form a disk-type structure along the radial direction. In the disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber, according to the brute force action of a rotary magnetic field and the action of a longitudinal magnetic field, the arc voltage can be lowered to drive the arc columns to be evenly distributed on an anode surface, the arc energy is accelerated to release, and the cut-off capability of the vacuum circuit breaker is improved.
Description
Technical field
The invention belongs to vacuum circuit-breaker field, particularly relate to disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber structure.
Background technology
Vacuum circuit-breaker is gained the name because the dielectric of contact gap after its arc-extinguishing medium and arc extinguishing is all high vacuum; It has volume little, lightweight, be applicable to frequent operation, advantage that arc extinguishing need not overhaul, apply comparatively universal in power distribution network.Vacuum circuit-breaker is 3 ~ 10kV; indoor distribution in 50Hz three-phase alternating current system; can in industrial and mining enterprises, power plant, transformer station as the protection of electric equipment and control; be specially adapted to the field of employment requiring non-oil ultra high vacuum system, less maintenance and frequent operation, circuit breaker is configurable in middle-placed switch cabinet, double-layer cabinet, fixing cabinet and uses as control and protection high voltage electric equipment.
The improvement of vacuum arc-extinguishing chamber contact structure mainly experienced by disc plate contact, transverse magnetic field contact and longitudinal field contact three phases.
(1) disc plate contact: disc plate contact structure is simple, and mechanical strength is high, is generally used in vacuum load switch or vacuum contactor.For disc plate contact, when drop-out current is larger, anode will there will be spot, and vacuum arc will produce strong shrinkage phenomenon, and metal vapors electric arc will be shrinkage type by diffusion-type transition, and then cause failure of interruption.
(2) transverse magnetic field contact: contact blade has helicla flute and a magnetic field vertical with arc column axis direction will be produced when there being electric current to flow through contact.The Lorentz force that transverse magnetic field contact and arc current interact and produce makes electric arc along the circumferential direction move, camber during motion can elongate by transverse magnetic field, make arc voltage and arc energy quantitative change large, connecting-disconnecting function is caused to be restricted, and it is strong when the ablation degree of contact still being spread than electric arc when electric arc gathers, the density of plasma when current over-zero is remained still higher, phenomenon of still restriking when recovery voltage is higher in arc gap.
(3) longitudinal field contact: its magnetic line of force of longitudinal field contact structure flows to consistent with arc current, can support arc resisting contraction, and improving electric arc is the critical value of shrinkage type by diffusion-type transition.When after current over-zero, diffusion and the decay of longitudinal magnetic field plasma and neutral particle are very unfavorable.The existence of eddy current not only reduces longitudinal magnetic field intensity between contact, and makes longitudinal magnetic field lag behind curent change, still has residue longitudinal magnetic field when making current over-zero between contact.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art part and provide a kind of disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber, it can while providing transverse magnetic field, produce again the effect of longitudinal magnetic field, advantageously in the loss of arc energy, electric arc temperature drop block, 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 realizes like this.
Disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber, the electrode that it comprises conducting rod, contact cup, iron core and connects with described contact cup; Described contact cup and conducting rod fixedly connect; Described iron core is inserted in contact cup; On described contact cup, equal portions have even number circulation side channel; On described iron core, equal portions have slot for winding; Described slot for winding built-in enter coil windings.
As a kind of preferred version, the number of slot for winding of the present invention can select 12 ~ 30.
As another kind of preferred version, the groove width of slot for winding of the present invention can select 2.5 ~ 3mm.
Coil windings of the present invention is radially scattered in tray type structure radially.
Further, the present invention can be fixed with contact blade in the end of described electrode.
The present invention is after logical three-phase alternating current, and conduction current flows in contact cup through conducting rod, by winding coil, in contact cup, forms rotating magnetic field, and passes through the contact acting in conjunction of another same structure, in intermediate air gap, equally also produce rotating magnetic field.Drive arc energy High Rotation Speed between dynamic/static contact, quick release of energy, thus reduce the arcing time, extend switch life.
Contact cup of the present invention is the structure of contact terminal that can produce longitudinal magnetic field, with the superimposed acting in conjunction blow-out of rotating magnetic field adopting the coil windings of tray type structure to produce.
Novel contact configurations of the present invention makes the drive of arc energy through rotating magnetic field of vacuum extinction indoor, become vortical from traditional axial flow to flow, under longitudinal magnetic field effect, arc voltage can be reduced, order about electric arc arc column to be uniformly distributed at anode surface, reduce the current density of regional area, thus eliminate anode spot or improve the critical electric current value forming anode spot.In motion process, the radial direction of gas generation kinetic energy exchanges, and takes away arc energy fast, makes arc extinction.Structure of contact terminal of the present invention effectively can reduce arc temperature, accelerates arc energy release, reduces contact ablation degree, and protection structure of contact terminal, improves vacuum circuit-breaker connecting-disconnecting function.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is iron core of the present invention fluting schematic diagram.
Fig. 3 is coil windings schematic diagram of the present invention.
In 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, disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber, the electrode 4 that it comprises conducting rod 1, contact cup 5, iron core 7 and connects with described contact cup 5; Described contact cup 5 fixedly connects with conducting rod 1; Described iron core 7 is inserted in contact cup 5; On described contact cup 5, equal portions have even number circulation side channel; On described iron core 7, equal portions have slot for winding 6; Described slot for winding 6 built-in enter coil windings 8.
The number of slot for winding 6 of the present invention is 12 ~ 30.The groove width of slot for winding 6 of the present invention is 2.5 ~ 3mm.Coil windings 8 of the present invention is radially scattered in tray type structure radially.For the coil windings 8 in protection contact, the present invention is provided with contact blade at the end winding support of described electrode 4.
Disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber of the present invention, by the iron core fluting in contact cup, contact cup can be equal to the armature with motor, the active conductor of armature winding is radially scattered in tray type structure radially in space.Coil windings adopts copper coin then welding manufacture of making a spurt to form.
Shown in Figure 1, disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber comprises conducting rod 1, contact cup (armature) 5, electrode 4, contact blade 3.This contact cup (armature) 5 adopts level Four shape structure, and 2 is the sense of current.
Shown in Figure 2, the present invention places the iron core 7 opening a groove 6 every 30 ° in contact cup (armature) 5, and groove width is 2.5mm.
Shown in Figure 3, coil windings 8 of the present invention adopts copper coin then welding manufacture of making a spurt to form, and is radially scattered in tray type structure radially.
The present invention all adopts this structure to dynamic and static contact.In interrupting process, dynamic, arc zone will be there will be between quiet, by the effect of three-phase alternating current, dynamic, under the effect of fixed contact coil windings, rotating magnetic field will be there is in contact surface, because vacuum arc is made up of metallic plasma, by the effect of electric arc, dynamic, arc zone between fixed contact also will produce strong rotating magnetic field, by the forceful action of rotating magnetic field, take away arc energy fast, under longitudinal magnetic field effect, arc voltage can be reduced, order about electric arc arc column to be uniformly distributed at anode surface, reduce the current density of regional area, thus eliminate anode spot or improve the critical electric current value forming anode spot, effective reduction arc temperature, acceleration arc energy discharges, reduce contact ablation degree, protection structure of contact terminal, make arc extinction, improve vacuum circuit-breaker connecting-disconnecting function.
The present invention can meet and cut-offs requirement under special operation condition, and the present invention simultaneously has very strong capacity current connecting-disconnecting function, and is studied by l-G simulation test, can improve product reliability, safe operation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber, is characterized in that, the electrode (4) comprising conducting rod (1), contact cup (5), iron core (7) and connect with described contact cup (5); Described contact cup (5) and conducting rod (1) fixedly connect; Described iron core (7) is inserted in contact cup (5); Even number circulation side channel is had at the upper equal portions of described contact cup (5); Slot for winding (6) is had at the upper equal portions of described iron core (7); Described slot for winding (6) built-in enter coil windings (8); The number of described slot for winding (6) is 12; The groove width of described slot for winding (6) is 2.5mm; Described coil windings (8) is radially scattered in tray type structure radially; Contact blade (3) is provided with at the end winding support of described electrode (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408481.6A CN102522257B (en) | 2011-12-09 | 2011-12-09 | Disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408481.6A CN102522257B (en) | 2011-12-09 | 2011-12-09 | Disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102522257A CN102522257A (en) | 2012-06-27 |
| CN102522257B true CN102522257B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110408481.6A Active CN102522257B (en) | 2011-12-09 | 2011-12-09 | Disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379670B (en) * | 2019-07-18 | 2020-11-17 | 西安交通大学 | High-current-capacity vacuum arc extinguish chamber with fixed fracture |
| CN113745044B (en) * | 2021-08-06 | 2022-04-08 | 四川大学 | Vacuum arc-extinguishing chamber contact |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1351361A (en) * | 2000-09-27 | 2002-05-29 | Lg产电株式会社 | Circuit breaker with mixed arc eliminator |
| CN202332704U (en) * | 2011-12-09 | 2012-07-11 | 沈阳工业大学 | Plate type gyromagnetic longitudinal blowing vacuum arc-extinguishing chamber |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2861757B2 (en) * | 1992-11-10 | 1999-02-24 | 三菱電機株式会社 | Electrode device for vacuum valve |
| US5744896A (en) * | 1996-05-21 | 1998-04-28 | Visual Computing Systems Corp. | Interlocking segmented coil array |
| 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 |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1351361A (en) * | 2000-09-27 | 2002-05-29 | Lg产电株式会社 | Circuit breaker with mixed arc eliminator |
| CN202332704U (en) * | 2011-12-09 | 2012-07-11 | 沈阳工业大学 | Plate type gyromagnetic longitudinal blowing vacuum arc-extinguishing chamber |
Non-Patent Citations (1)
| Title |
|---|
| 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》.2006,(第12期),第12页第1段至第13页第1段,图2-2、2-3. * |
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| CN102522257A (en) | 2012-06-27 |
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