CN106571265A - Iron core type horizontal and vertical magnetic field combined contact of vacuum arc-extinguishing chamber - Google Patents
Iron core type horizontal and vertical magnetic field combined contact of vacuum arc-extinguishing chamber Download PDFInfo
- Publication number
- CN106571265A CN106571265A CN201610901064.8A CN201610901064A CN106571265A CN 106571265 A CN106571265 A CN 106571265A CN 201610901064 A CN201610901064 A CN 201610901064A CN 106571265 A CN106571265 A CN 106571265A
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- contact
- horizontal
- horizontal magnetic
- extinguishing chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6643—Contacts; Arc-extinguishing means, e.g. arcing rings having disc-shaped contacts subdivided in petal-like segments, e.g. by helical grooves
Abstract
The invention discloses an iron core type horizontal and vertical magnetic field combined contact of a vacuum arc-extinguishing chamber, and belongs to the technical field of electric appliances. The contact comprises a pair of conducting rods, a pair of horizontal magnetic contact blades and a pair of annular iron cores with gaps. The two horizontal magnetic contact blades are arranged opposite to each other, each contact blade of a grooved structure including a helical groove, a fylfot groove or a straight groove can control a current path to generate a horizontal magnetic field, and the contact blade can be of a cup-shaped contact structure in which a skewed slot is formed in the cup wall; the connecting rods are connected to the back sides of the two horizontal magnetic contact blades respectively; and the annular iron cores with gaps are arranged in the back sides of the horizontal magnetic contact blades, the gaps are arranged in a staggered manner, so that more magnetic induction lines in the two iron cores can be closed mutually, and the vertical magnetic field can be generated between poles. When the current is switched ON/OFF, both the horizontal magnetic field generated by the horizontal magnetic contact blades and the vertical magnetic field caused by the iron cores act on vacuum arcs, the form and motion characteristics of the arcs can be controlled in a better way, and a contact system has the advantages of simple structure, small size, low contact resistance, low current zero-crossing hysteresis and the like.
Description
Technical field：
The invention belongs to technical field of electric appliances, is related to for the vacuum interrupter in vacuum circuit breaker, and in particular to a kind of
Iron core type transverse magnetic field is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field.
Background technology：
Application of the vacuum circuit breaker in power system than wide, and as the level of production is improved and theoretical research
Deeply, its application is gradually related in wider system condition, and develops to miniaturization, jumbo direction.Vacuum extinction
Room is the critical piece of vacuum circuit breaker, the miniaturization of vacuum interrupter in the urgent need to vacuum interrupter control arc ability raising,
The increase of contact surface effectively utilizes area and the miniaturization of electrode, and the design of contact plays a key effect.Horizontal magnetic contact master
If electric arc is driven using the transverse magnetic field that electric current in contact is produced, make electric arc move in contact surface, avoid touching so as to reach
The effect of head arcing face Partial ablation and raising arc-chutes drop-out current grade；Vertical magnetic contact is mainly produced using electric current in contact
Raw longitudinal magnetic field control arc shape so as to can not occur seriously to gather under more high current, so as to mitigate electric arc to contact
With the infringement of radome, extinguish when being conducive to electric arc zero passage and repeatedly reliability is cut-off.
The content of the invention：
The purpose of the present invention is to find the structure vacuum arc-extinguishing chamber contact that simpler, diameter is less and control arc ability is higher,
Transverse magnetic field and longitudinal magnetic field are made while acting on vacuum arc, arc shape can be regulated and controled, arc motion can be regulated and controled again.
For achieving the above object, the present invention is adopted the following technical scheme that and is achieved：
Iron core type transverse magnetic field is combined vacuum arc-extinguishing chamber contact, including the horizontal magnetic of a pair of specular arrangements with longitudinal magnetic field
Contact blade, is connected to horizontal magnetic contact blade the conducting rod for extending round about, and is respectively arranged in right for a pair for a pair
Answer the annular core of the horizontal magnetic contact blade back side and leaving certain gaps uncovered by the economic plan.
The present invention is further improved by：Each horizontal magnetic contact blade is provided with the helicla flute of spiral distribution, ten thousand word grooves
Or straight trough or the horizontal magnetic contact of cup-shaped for being provided with skewed slot for wall of cup, for controlling the current path on contact to produce transverse magnetic
.
The present invention is further improved by：The annular core gap position of two pieces of leaving certain gaps uncovered by the economic plans is handled, and breach number is 1
Or 2, it is 180 degree or 90 degree to handle angle, for making the magnetic induction line in annular core mutually form closed loop.
The present invention is further improved by：Annular core is formed using multi-disc iron plate stacking, and the shape of multi-disc iron plate
Size is identical or different.
Compared with prior art, the present invention has the advantage that：
1st, the vacuum arc-extinguishing chamber contact control arc ability in the present invention is higher.During vacuum interrupter drop-out current, touched by horizontal magnetic
The longitudinal magnetic field collective effect that the transverse magnetic field and iron core that head piece is produced causes can more effectively regulate and control electric arc in interpolar electric arc
Characteristic.
2nd, the vacuum arc-extinguishing chamber contact structure in the present invention is simpler.Vacuum arc-extinguishing chamber contact in the present invention need only be respectively
The annular core of one piece of leaving certain gaps uncovered by the economic plan is arranged at the back side of horizontal magnetic contact, transverse magnetic field and longitudinal direction just can be produced between electrode simultaneously
Magnetic field.
3rd, the vacuum arc-extinguishing chamber contact volume in the present invention is less.Due to constraint of the longitudinal magnetic field to electric arc, in the present invention
Horizontal magnetic contact blade can (it is tactile that the vacuum arc-extinguishing chamber contact diameter in the present invention is equal to horizontal magnetic therein than general horizontal magnetic contact blade
Head piece diameter) diameter it is less.
4th, during arc current zero passage, longitudinal magnetic field magnetic hysteresis is little.As the iron core in the vacuum arc-extinguishing chamber contact in the present invention can
To be formed and substantially reduce the vortex in iron plate to be stacked using thin slice, so during arc current zero passage the magnetic hysteresis of longitudinal magnetic field is very
It is little.
5th, contact effectively utilizes area is bigger.The longitudinal magnetic field that vacuum arc-extinguishing chamber contact in the present invention is produced makes electric arc shape
State relatively spreads, and can mitigate the contact ablation at arc root；Transverse magnetic field drives electric arc to move in contact surface simultaneously, makes arc energy more
Equably burn on contact arcing face.
Description of the drawings：
Fig. 1 is a kind of structural representation of vacuum arc-extinguishing chamber contact of the invention；
Fig. 2 is the structural representation of conducting rod in an example of the invention；
Fig. 3 is the structural representation of horizontal magnetic contact blade in an example of the invention；
Fig. 4 is the structural representation of annular core in an example of the invention；
In figure, each symbol is：1st, conducting rod, 2, horizontal magnetic contact blade, 3, annular core.
Fig. 5 is that one example of the present invention produces longitudinal magnetic field with the ability of radial magnetic field with the simulation result opened away from change；
In figure, two curves are the average longitudinal magnetic field and average radial magnetic field in electric arc respectively.
Specific embodiment：
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figures 1 to 5, the vacuum arc-extinguishing chamber contact in the present invention, by a pair of conductive bar 1, a pair horizontal magnetic contact blades 2
Constitute with a pair of annular cores 3.
Two horizontal 2 specular of magnetic contact blade arrangements；One end of conducting rod 1 is connected to horizontal 2 central end face of magnetic contact blade, separately
One end extends respectively round about；Two annular cores 3 are arranged in horizontal 2 back side of magnetic contact blade of correspondence (the one of connection conducting rod 1
Face).
In order to produce transverse magnetic field, some grooves are opened on horizontal magnetic contact blade 2 to control the current path on horizontal magnetic contact blade, such as
Helix-type flute, ten thousand font grooves, straight-line groove etc., or wall of cup is provided with the horizontal magnetic contact of cup-shaped of skewed slot.
In order to produce longitudinal magnetic field, the annular core 3 at horizontal 2 back side of magnetic contact blade is for annular jaggy and around conducting rod
1, the breach of two annular cores 3 is handled.When having electric current to pass through in conducting rod 1, as annular core 3 has very big magnetic conductance
Rate, wherein a large amount of magnetic induction lines are distributed with；Again as each annular core 3 is jagged, magnetic induction line must across breach formed closed loop or
Closed loop is formed with the magnetic induction line of relative annular core 3 across horizontal magnetic contact blade 2 and contact gap.Adjust 3 breach of annular core
Size, distance between angle and annular core 3 is handled, longitudinal magnetic induction and distribution character of electrode gap can be regulated and controled.
In order to reduce the magnetic hysteresis of longitudinal magnetic field during current over-zero, annular core 3 can be that multilamellar is formed compared with tagger stacking.
In drop-out current, the vacuum arc between horizontal magnetic contact blade 2 is subject to the transverse magnetic field that horizontal magnetic contact blade 2 is produced simultaneously
The effect of the longitudinal magnetic field produced with annular core 3, by the ratio for regulating and controlling transverse magnetic field and longitudinal magnetic field, can be true to interpolar
The form and kinetic characteristic of empty electric arc is regulated and controled.
Claims (4)
1. iron core type transverse magnetic field is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, it is characterised in that：Including a pair of speculars
The horizontal magnetic contact blade (2) of arrangement, is connected to horizontal magnetic contact blade (2) the conducting rod (1) for extending round about a pair, with
And it is respectively arranged annular core (3) in horizontal magnetic contact blade (2) back side of correspondence and leaving certain gaps uncovered by the economic plan for a pair.
2. iron core type transverse magnetic field according to claim 1 is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, and its feature exists
In：Each horizontal magnetic contact blade (2) is provided with the helicla flute of spiral distribution, ten thousand word grooves or straight trough or is provided with skewed slot for wall of cup
The horizontal magnetic contact of cup-shaped, for controlling the current path on contact to produce transverse magnetic field.
3. iron core type transverse magnetic field according to claim 1 is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, and its feature exists
In：Annular core (3) gap position of two pieces of leaving certain gaps uncovered by the economic plans is handled, and breach number is 1 or 2, handles angle for 180 degree or 90
Degree, for making the magnetic induction line in annular core (3) mutually form closed loop.
4. iron core type transverse magnetic field according to claim 1 is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, and its feature exists
In：Annular core (3) is formed using multi-disc iron plate stacking, and the shape size of multi-disc iron plate is identical or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610901064.8A CN106571265A (en) | 2016-10-17 | 2016-10-17 | Iron core type horizontal and vertical magnetic field combined contact of vacuum arc-extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610901064.8A CN106571265A (en) | 2016-10-17 | 2016-10-17 | Iron core type horizontal and vertical magnetic field combined contact of vacuum arc-extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106571265A true CN106571265A (en) | 2017-04-19 |
Family
ID=58532939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610901064.8A Pending CN106571265A (en) | 2016-10-17 | 2016-10-17 | Iron core type horizontal and vertical magnetic field combined contact of vacuum arc-extinguishing chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106571265A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086149A (en) * | 2017-06-05 | 2017-08-22 | 西安交通大学 | A kind of high voltage vacuum interrupter horseshoe-shaped indulges magnetic contact conductive structure |
| CN107123566A (en) * | 2017-06-05 | 2017-09-01 | 西安交通大学 | A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4636600A (en) * | 1984-03-19 | 1987-01-13 | Holec Systemen Componenten B.V. | Vacuum switch provided with horseshoe-shaped elements for generating an axial magnetic field |
| DE19716278A1 (en) * | 1997-04-18 | 1998-10-22 | Abb Patent Gmbh | Vacuum switching device |
| CN2796070Y (en) * | 2005-04-28 | 2006-07-12 | 成都旭光电子股份有限公司 | Vacuum arc-extinguish room |
| CN105529210A (en) * | 2016-01-15 | 2016-04-27 | 西安交通大学 | Novel permanent-magnet composite magnetic field contact structure and vacuum arc-extinguishing chamber employing same |
-
2016
- 2016-10-17 CN CN201610901064.8A patent/CN106571265A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4636600A (en) * | 1984-03-19 | 1987-01-13 | Holec Systemen Componenten B.V. | Vacuum switch provided with horseshoe-shaped elements for generating an axial magnetic field |
| DE19716278A1 (en) * | 1997-04-18 | 1998-10-22 | Abb Patent Gmbh | Vacuum switching device |
| CN2796070Y (en) * | 2005-04-28 | 2006-07-12 | 成都旭光电子股份有限公司 | Vacuum arc-extinguish room |
| CN105529210A (en) * | 2016-01-15 | 2016-04-27 | 西安交通大学 | Novel permanent-magnet composite magnetic field contact structure and vacuum arc-extinguishing chamber employing same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086149A (en) * | 2017-06-05 | 2017-08-22 | 西安交通大学 | A kind of high voltage vacuum interrupter horseshoe-shaped indulges magnetic contact conductive structure |
| CN107123566A (en) * | 2017-06-05 | 2017-09-01 | 西安交通大学 | A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter |
| CN107123566B (en) * | 2017-06-05 | 2019-08-23 | 西安交通大学 | A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170419 |
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| RJ01 | Rejection of invention patent application after publication |