CN102522258B - Disc-type gyromagnetic transverse blowing vacuum arc extinguish chamber - Google Patents
Disc-type gyromagnetic transverse blowing vacuum arc extinguish chamber Download PDFInfo
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- CN102522258B CN102522258B CN201110408560.7A CN201110408560A CN102522258B CN 102522258 B CN102522258 B CN 102522258B CN 201110408560 A CN201110408560 A CN 201110408560A CN 102522258 B CN102522258 B CN 102522258B
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Abstract
The invention belongs to a vacuum circuit breaker field and especially relates to a disc-type gyromagnetic transverse blowing vacuum arc extinguish chamber. The vacuum arc extinguish chamber comprises: a conducting rod (1), a contact cup bottom (2), an iron core (7) and a contact cup (3). The contact cup bottom (2), the contact cup (3) and the conducting rod (1) are successively matched. The contact cup (3) is provided with circulating tanks with equal intervals. A deflection angle of the circulating tanks and a longitudinal axis of the conducting rod (1) is 15-35 DEG. The iron core (7) is placed in the contact cup (3). The iron core (7) is provided with winding slots (6) with equal intervals. Coil windings (8), which are distributed along a radial direction and are in a radiation shape, form a disc structure. A contact blade is fixedly arranged on an end of the contact cup bottom (2). 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 vacuum circuit-breaker field, particularly relate to a kind of disc type gyromagnetic cross-blast vacuum interrupter.
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.1893, the Li Dunhaosi of the U.S. proposed the simple vacuum interrupter of structure, and obtains design patent.Vacuum switch has been made first time by nineteen twenty Sweden Fo Jia company.The achievement in research that nineteen twenty-six U.S. Soren is gloomy etc. announces also show the possibility of breaking current in a vacuum, but because of breaking capacity little, be subject to again the restriction of vacuum technique and vacuum material development level, still can not drop into actual use.Along with the development of vacuum technique, the fifties, the vacuum switch that first is applicable to cut off the particular/special requirements such as Capacitor banks was just made by the U.S., and breaking current is still parked in the level of 4 kilo-amperes.Due to breakthrough acquired in the progress on vacuum material smelting technique and contacts of vacuum switch structural research, 1961, GE started to produce 15 kilovolts, breaking current is the vacuum circuit-breaker of 12.5 kilo-amperes.Within 1966, manufacture experimently into 15 kilovolts, the vacuum circuit-breaker of 26 kilo-amperes and 31.5 kilo-amperes, thus make vacuum circuit-breaker enter high voltage, jumbo electric power system.The mid-80, the breaking capacity of vacuum circuit-breaker has reached 100 kilo-amperes.China developed vacuum switch from 1958, nineteen sixty Xi'an Communications University and Xi'an switching rectifier factory is developed into first 6.7 kilovolts jointly, breaking capacity is the vacuum switch of 600 peaces; Make again 10 kilovolts subsequently, breaking capacity is the three-phase vacuum switch of 1.5 kilo-amperes.1969 time photoelectron pipe factory and Xian High voltage Apparatus Research Institute made 10 kilovolts, the single-phase fast vacuum switch of 2 kilo-ampere.After the seventies, China can the vacuum switch of independent research and production all size.
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 cross-blast vacuum interrupter, 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.
Disc type gyromagnetic cross-blast vacuum interrupter, 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; On described contact cup, equal portions have circulating tanks; The drift angle of described circulating tanks and conducting rod longitudinal axis is 15 ~ 35 °; 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 is 12 ~ 30.
As another kind of preferred version, the groove width of slot for winding of the present invention is 2.5 ~ 3mm.
Further, coil windings of the present invention is radially scattered in tray type structure radially.
Further, the end winding support of the present invention at the bottom of described contact cup is provided 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 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.
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, transverse magnetic field structure of contact terminal utilizes the helicla flute on contact face, the electric current flowed through is made to produce the transverse magnetic field vertical with arc column direction, transverse magnetic field produces tangential force to vacuum arc, electric arc is made to make high speed rotary motion in contact surface, its speed can reach 50m/s to 120m/s, reduce fully constricted vacuum arc to the Partial ablation of contact, arc energy is uniformly distributed at electrode surface, reduce contact surface melting zone thickness, avoid local overheating.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, at the bottom of contact cup; 3, contact cup; 4, electric arc; 5, contact blade; 6, slot for winding; 7, iron core; 8, coil windings.
Embodiment
As shown in the figure, disc type gyromagnetic cross-blast vacuum interrupter, 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; On described contact cup 3, equal portions have circulating tanks; The drift angle of described circulating tanks and conducting rod 1 longitudinal axis is 30 °; 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 5.
Vacuum circuit-breaker rotation of the present invention is horizontal blows structure of contact terminal, and by placing grooved core 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.
Disc type gyromagnetic cross-blast vacuum interrupter of the present invention, forms transverse magnetic field by the grooved on contact cup, simultaneously because the effect of iron core winding will produce rotating magnetic field again, realizes gyromagnet, horizontal magnetic acting in conjunction.
Shown in Figure 1, disc type gyromagnetic cross-blast vacuum interrupter to comprise at the bottom of conducting rod 1, contact cup 2, contact cup (armature) 3, contact blade 5.Shown in Figure 2, the present invention places the iron core 7 opening 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, arc zone will be there will be between dynamic and static, by the effect of three-phase alternating current, under the effect of dynamic and static 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, arc zone between dynamic and static contact also by producing strong rotating magnetic field, by the forceful action of rotating magnetic field, takes away arc energy fast.Simultaneously, because contact cup is under the vertical transverse magnetic field effect in arc column direction, transverse magnetic field produces tangential force to vacuum arc, electric arc is made to make high speed rotary motion in contact surface, its speed can reach 50m/s to 120m/s, reduces fully constricted vacuum arc to the Partial ablation of contact, arc energy is uniformly distributed at electrode surface, reduce contact surface melting zone thickness, avoid local overheating.In motion process, the radial direction of gas generation kinetic energy exchanges, and takes away arc energy fast, makes arc extinction.Make arc extinction, effectively reduce arc temperature, accelerate arc energy release, reduce contact ablation degree, protection structure of contact terminal, improves 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 cross-blast vacuum interrupter, 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; Circulating tanks is had at the upper equal portions of described contact cup (3); The drift angle of described circulating tanks and conducting rod (1) longitudinal axis is 30 °; 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 (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408560.7A CN102522258B (en) | 2011-12-09 | 2011-12-09 | Disc-type gyromagnetic transverse blowing vacuum arc extinguish chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110408560.7A CN102522258B (en) | 2011-12-09 | 2011-12-09 | Disc-type gyromagnetic transverse blowing vacuum arc extinguish chamber |
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| CN102522258A CN102522258A (en) | 2012-06-27 |
| CN102522258B true CN102522258B (en) | 2015-07-15 |
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| CN201110408560.7A Active CN102522258B (en) | 2011-12-09 | 2011-12-09 | Disc-type gyromagnetic transverse blowing vacuum arc extinguish chamber |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2731120A1 (en) * | 2012-11-08 | 2014-05-14 | ABB Technology AG | Vacuum interrupter arrangement for a medium voltage circuit breaker with cup-shaped TMF-contacts |
| 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 |
| CN104021973B (en) * | 2014-06-24 | 2016-05-04 | 沈阳华德海泰电器有限公司 | A kind of three-station of quick-speed turning on-off bus transfer current |
| CN106531543A (en) * | 2016-12-20 | 2017-03-22 | 西安交通大学 | Iron core type cup-shaped transverse-magnetic contact of vacuum arc extinguishing chamber |
| CN108198728A (en) * | 2018-02-07 | 2018-06-22 | 西安交通大学 | A kind of contacts of vacuum switch structure |
| CN110942938A (en) * | 2019-12-02 | 2020-03-31 | 北京双杰电气股份有限公司 | Contact unit for DC contactor |
Citations (2)
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| CN1351361A (en) * | 2000-09-27 | 2002-05-29 | Lg产电株式会社 | Circuit breaker with mixed arc eliminator |
| CN202332705U (en) * | 2011-12-09 | 2012-07-11 | 沈阳工业大学 | Disc type gyromagnetic cross-blast vacuum interrupter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09190744A (en) * | 1996-01-10 | 1997-07-22 | Mitsubishi Electric Corp | Vacuum circuit breaker and manufacture thereof |
| 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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2011
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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 |
| CN202332705U (en) * | 2011-12-09 | 2012-07-11 | 沈阳工业大学 | Disc type gyromagnetic cross-blast vacuum interrupter |
Non-Patent Citations (1)
| Title |
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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》.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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| CN102522258A (en) | 2012-06-27 |
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