CN102522258A - 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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- CN102522258A CN102522258A CN2011104085607A CN201110408560A CN102522258A CN 102522258 A CN102522258 A CN 102522258A CN 2011104085607 A CN2011104085607 A CN 2011104085607A CN 201110408560 A CN201110408560 A CN 201110408560A CN 102522258 A CN102522258 A CN 102522258A
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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 the vacuum circuit-breaker field, relate in particular to the horizontal vacuum interrupter that blows of a kind of disc type gyromagnet.
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.1893, the Li Dunhaosi of the U.S. proposed the simple vacuum interrupter of structure, and has obtained design patent.Nineteen twenty Sweden Fo Jia company has processed vacuum switch for the first time.The achievement in research of nineteen twenty-six U.S. Soren announcement such as gloomy has also shown the possibility of breaking current in a vacuum, but because of breaking capacity is little, receives the restriction of vacuum technique and vacuum material development level again, still can not drop into actual use.Along with the development of vacuum technique, the fifties, first vacuum switch that is applicable to specific (special) requirements such as cut-out capacitor group was just processed by the U.S., and breaking current still is parked in the level of 4 kilo-amperes.Because the breakthrough that is obtained in progress on the vacuum material smelting technique and the contacts of vacuum switch structural research, 1961, it was the vacuum circuit-breaker of 12.5 kilo-amperes that GE begins to produce 15 kilovolts, breaking current.Manufactured experimently into the vacuum circuit-breaker of 15 kilovolts, 26 kilo-amperes and 31.5 kilo-amperes in 1966, thereby make vacuum circuit-breaker get into 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 since 1958, nineteen sixty Xi'an Communications University to be developed into first 6.7 kilovolts, breaking capacity jointly with Xi'an switching rectifier factory be 600 vacuum switches of pacifying; Processing 10 kilovolts, breaking capacity subsequently again is the three-phase vacuum switch of 1.5 kilo-amperes.1969 time photoelectron pipe factory and Xian High voltage Apparatus Research Institute processed 10 kilovolts, the single-phase fast vacuum switch of 2 kilo-amperes.After the seventies, China can independently develop and produce the vacuum switch of all size.
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 a kind of disc type gyromagnet the horizontal vacuum interrupter that blows, 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 realizes like this.
The horizontal vacuum interrupter that blows of disc type gyromagnet is at the bottom of it comprises conducting rod, contact cup, iron core and contact cup; At the bottom of the said contact cup and contact cup and conducting rod fixedly connect successively; Equal portions have circulating tanks on said contact cup; The drift angle of said circulating tanks and conducting rod longitudinal axis is 15～35 °; Said iron core is inserted in the contact cup; Equal portions have slot for winding on said iron core; Said slot for winding is built-in goes into the coil winding.
As a kind of preferred version, the number of slot for winding according to the invention is 12～30.
As another kind of preferred version, the groove width of slot for winding according to the invention is 2.5～3mm.
Further, coil windings according to the invention radially is scattered in tray type structure radially.
Further, the end of the present invention at the bottom of said contact cup is fixed with contact blade.
The present invention is behind logical three-phase alternating current, and conduction current flows in the contact cup through conducting rod, through winding coil, in the contact cup, forms rotating magnetic field, and through the isostructural contact acting in conjunction of another second phase, in intermediate air gap, equally also produces rotating magnetic field.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, becomes vortical by traditional axial flow and flows, and the transverse magnetic field structure of contact terminal is the helicla flute that utilizes on the contact face; Make the electric current of flowing through produce the transverse magnetic field vertical with the arc column direction; Transverse magnetic field produces tangential force to vacuum arc, makes electric arc make high speed rotary motion in contact surface, and its speed can reach 50m/s to 120m/s; Reducing fully constricted vacuum arc ablates to the part of contact; Arc energy is evenly distributed at electrode surface, reduce contact surface melting zone thickness, avoid local overheating.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.
Among the figure: 1, conducting rod; 2, at the bottom of the 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, the horizontal vacuum interrupter that blows of disc type gyromagnet, it comprises at the bottom of conducting rod 1, the contact cup 2, iron core 7 and contact cup 3; At the bottom of the said contact cup 2 and contact cup 3 fixedly connect successively with conducting rod 1; Equal portions have circulating tanks on said contact cup 3; The drift angle of said circulating tanks and conducting rod 1 longitudinal axis is 30 °; Said iron core 7 is inserted in the contact cup 3; Equal portions have slot for winding 6 on said iron core 7; Said slot for winding 6 is built-in goes into coil winding 8.
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 end of 2 at the bottom of said contact cup is fixed with contact blade 5.
The horizontal structure of contact terminal that blows of vacuum circuit-breaker of the present invention rotation through in the contact cup, placing the fluting iron core, can be equal to the armature with motor with the contact cup, 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.
The horizontal vacuum interrupter that blows of disc type gyromagnet of the present invention forms transverse magnetic field through the grooved on the contact cup, because the effect of iron core winding will produce rotating magnetic field again, realizes gyromagnet, horizontal magnetic acting in conjunction simultaneously.
Referring to shown in Figure 1, the disc type gyromagnet is horizontal to blow that vacuum interrupter comprises at the bottom of conducting rod 1, the contact cup 2, contact cup (armature) 3, contact blade 5.Referring to shown in Figure 2, the present invention places every at a distance from 30 ° of iron cores 7 of opening a groove 6 in contact cup (armature) 3, 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.
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, in contact surface rotating magnetic field will appear, because vacuum arc is to be made up of metallic plasma; Effect through electric arc; 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.Simultaneously, because the contact cup is under the vertical transverse magnetic field effect of arc column direction, transverse magnetic field produces tangential force to vacuum arc; Make electric arc make high speed rotary motion in contact surface; Its speed can reach 50m/s to 120m/s, reduces fully constricted vacuum arc and is ablated in the part of contact, and arc energy is evenly distributed at electrode surface; Reduce contact surface melting zone thickness, avoid local overheating.Arc energy is taken away in the radially exchange of gas generation kinetic energy fast in motion process, makes arc extinction.Make arc extinction, effectively reduce arc temperature, quicken arc energy and discharge, reduce contact ablation degree, the protection structure of contact terminal 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 (5)
1. the horizontal vacuum interrupter that blows of disc type gyromagnet is characterized in that, comprises (2) at the bottom of conducting rod (1), the contact cup, iron core (7) and contact cup (3); (2) and contact cup (3) fixedly connect with conducting rod (1) successively at the bottom of the said contact cup; Go up equal portions at said contact cup (3) and have circulating tanks; The drift angle of said circulating tanks and conducting rod (1) longitudinal axis is 15～35 °; Said iron core (7) is inserted in the contact cup (3); Go up equal portions at said iron core (7) and have slot for winding (6); Said slot for winding (6) is built-in goes into coil winding (8).
2. the horizontal vacuum interrupter that blows of disc type gyromagnet according to claim 1 is characterized in that: the number of said slot for winding (6) is 12～30.
3. the horizontal vacuum interrupter that blows of disc type gyromagnet according to claim 2 is characterized in that: the groove width of said slot for winding (6) is 2.5～3mm.
4. the horizontal vacuum interrupter that blows of disc type gyromagnet according to claim 3 is characterized in that: said coil windings (8) radially is scattered in tray type structure radially.
5. the horizontal vacuum interrupter that blows of disc type gyromagnet according to claim 4 is characterized in that: the end of (2) is fixed with contact blade (5) at the bottom of said contact cup.
Priority Applications (1)
| 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 true CN102522258A (en) | 2012-06-27 |
| CN102522258B 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104021973A (en) * | 2014-06-24 | 2014-09-03 | 沈阳华德海泰电器有限公司 | Three-position switch for transferring current by quickly disconnecting bus |
| 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 |
| CN104969322A (en) * | 2012-11-08 | 2015-10-07 | Abb技术股份公司 | Vacuum interrupter arrangement for a medium voltage circuit breaker with cup-shaped TMF-contacts |
| 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 |
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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 |
| 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 |
| CN202332705U (en) * | 2011-12-09 | 2012-07-11 | 沈阳工业大学 | Disc type gyromagnetic cross-blast vacuum interrupter |
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2011
- 2011-12-09 CN CN201110408560.7A patent/CN102522258B/en active Active
Patent Citations (6)
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| JPH09190744A (en) * | 1996-01-10 | 1997-07-22 | Mitsubishi Electric Corp | Vacuum circuit breaker and manufacture thereof |
| CN1218585A (en) * | 1996-05-21 | 1999-06-02 | 可视计算体系有限公司 | Interlocking segmented coil array |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104969322A (en) * | 2012-11-08 | 2015-10-07 | Abb技术股份公司 | Vacuum interrupter arrangement for a medium voltage circuit breaker with cup-shaped TMF-contacts |
| 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 |
| CN104021973A (en) * | 2014-06-24 | 2014-09-03 | 沈阳华德海泰电器有限公司 | Three-position switch for transferring current by quickly disconnecting bus |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102522258B (en) | 2015-07-15 |
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