CN102496518B - Disk-type gyromagnetic vacuum arc extinguish chamber - Google Patents
Disk-type gyromagnetic vacuum arc extinguish chamber Download PDFInfo
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- CN102496518B CN102496518B CN201110408672.2A CN201110408672A CN102496518B CN 102496518 B CN102496518 B CN 102496518B CN 201110408672 A CN201110408672 A CN 201110408672A CN 102496518 B CN102496518 B CN 102496518B
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Abstract
The invention belongs to the field of vacuum circuit breakers and in particular relates to a disk-type gyromagnetic vacuum arc extinguish chamber, which comprises a conductive rod (1), a contact cup bottom (2), an iron core (7) and a contact cup (3), wherein the contact cup bottom (2), the contact cup (3) and the conductive rod (1) are in fixed matching connection in sequence; the iron core (7) is arranged in the contact cup (3); 12 to 30 winding grooves (6) are formed on the iron core (7) at equal intervals; a coil winding (8) is arranged in each winding groove (6); the width of each winding groove (6) is 2.5 to 3 mm; the coil windings (8) are distributed in a radial shape along the radial direction to form a disk-type structure; and a contact sheet is fixed at the end of the contact cup bottom (2). The disk-type gyromagnetic vacuum arc extinguish chamber has the advantages that: a transverse magnetic field is provided, and a longitudinal magnetic field function can be realized; electric arc energy can be dissipated, and a temperature dropping speed of electric arc is high; and the disk-type gyromagnetic vacuum arc extinguish chamber is high in insulating performance, high in breaking capacity, convenient to install and maintain, and high in operating reliability.
Description
Technical field
The invention belongs to vacuum circuit-breaker field, particularly relate to a kind of disc type gyromagnetic vacuum arc extinguish chamber.
Background technology
In electric power system, high voltage switchgear plays control and protective effect.Primary cut-out is important electrical the most, is mainly used in closing, cut-offfing circuit.In recent years, along with the fast development of power industry, electric pressure and capacity promote day by day, and high-performance, oligosaprobic need for electricity are that the development of vacuum circuit-breaker provides more wide research and development and application space.
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 disc type gyromagnetic 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 cooling 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 is achieved in that disc type gyromagnetic vacuum arc extinguish chamber, and it comprises at the bottom of conducting rod, contact cup, iron core and contact cup; At the bottom of described contact cup and contact cup and conducting rod fixedly connect successively; Described iron core is inserted in contact cup; 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.
Further, coil windings of the present invention is radially scattered in tray type structure radially.
Further, the end of the present invention at the bottom of described contact cup can be fixed with contact blade.
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 opposite side 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.
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, 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 vacuum circuit-breaker arc extinguishing chamber structural representation.
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, at the bottom of contact cup; 3, contact cup; 4, contact blade; 5, electric arc; 6, slot for winding; 7, iron core; 8, coil windings.
Embodiment
As shown in the figure, disc type gyromagnetic vacuum arc extinguish chamber, it to comprise at the bottom of conducting rod 1, contact cup 2, iron core 7 and contact cup 3; At the bottom of described contact cup 2 and contact cup 3 fixedly connect successively with conducting rod 1; Described iron core 7 is inserted in contact cup 3; 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 protection contact in coil windings 8, the present invention at the bottom of described contact cup 2 end winding support be provided with contact blade 4.
Disc type gyromagnetic vacuum arc extinguish chamber of the present invention, by the fluting on iron core 7, 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, disc type gyromagnetic vacuum arc extinguish chamber to comprise at the bottom of conducting rod 1, contact cup 2, contact cup (armature) 3, contact blade 4 and electric arc 5.Shown in Figure 2, the present invention opens a groove 6 every 30 ° in contact cup (armature) 3, 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, make arc extinction, effective reduction arc temperature, acceleration arc energy discharges, reduce contact ablation degree, protection structure of contact terminal, 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. disc type gyromagnetic vacuum arc extinguish chamber, is characterized in that, comprises (2) at the bottom of conducting rod (1), contact cup, iron core (7) and contact cup (3); (2) at the bottom of described contact cup and contact cup (3) and conducting rod (1) fixedly connect successively; Described iron core (7) is inserted in contact cup (3); 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; At the bottom of described contact cup, the end winding support of (2) is provided with contact blade (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408672.2A CN102496518B (en) | 2011-12-09 | 2011-12-09 | Disk-type gyromagnetic vacuum arc extinguish chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408672.2A CN102496518B (en) | 2011-12-09 | 2011-12-09 | Disk-type gyromagnetic vacuum arc extinguish chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102496518A CN102496518A (en) | 2012-06-13 |
| CN102496518B true CN102496518B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110408672.2A Active CN102496518B (en) | 2011-12-09 | 2011-12-09 | Disk-type gyromagnetic vacuum arc extinguish chamber |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701066B (en) * | 2013-12-04 | 2017-03-22 | 沈阳工业大学 | Magnetorheological fluid-type longitudinal-magnetic vacuum arc extinguishing chamber contact system |
| CN108447748A (en) * | 2018-03-23 | 2018-08-24 | 西安交通大学 | It is a kind of to use the vacuum interrupter for applying rotating excitation field outside and its cut-off direct methods |
| CN114141572B (en) * | 2021-11-03 | 2022-12-06 | 西安交通大学 | Current transfer type circuit breaker |
| CN114141575B (en) * | 2021-11-03 | 2022-11-08 | 西安交通大学 | Parallel current equalizing structure of current transfer type circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218585A (en) * | 1996-05-21 | 1999-06-02 | 可视计算体系有限公司 | 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 |
| CN202339883U (en) * | 2011-12-09 | 2012-07-18 | 沈阳工业大学 | Disc type gyromagnetic vacuum arc extinguish chamber |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100351300B1 (en) * | 2000-09-27 | 2002-09-05 | 엘지산전 주식회사 | Hybrid arc extinguishing apparatus for circuit breaker |
-
2011
- 2011-12-09 CN CN201110408672.2A patent/CN102496518B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218585A (en) * | 1996-05-21 | 1999-06-02 | 可视计算体系有限公司 | 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 |
| CN202339883U (en) * | 2011-12-09 | 2012-07-18 | 沈阳工业大学 | Disc type gyromagnetic vacuum arc extinguish chamber |
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| CN102496518A (en) | 2012-06-13 |
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