CN107093535A - A kind of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure - Google Patents
A kind of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure Download PDFInfo
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- CN107093535A CN107093535A CN201710419825.0A CN201710419825A CN107093535A CN 107093535 A CN107093535 A CN 107093535A CN 201710419825 A CN201710419825 A CN 201710419825A CN 107093535 A CN107093535 A CN 107093535A
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- contact
- magnetic field
- region
- longitudinal magnetic
- contact blade
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- 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
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure, including structure identical anode contact system and cathode contact system in vacuum interrupter are arranged in, anode contact system includes conducting rod, U-shaped unshakable in one's determination and contact blade；Conducting rod one end is passed through at U-shaped opening unshakable in one's determination, and is connected with contact blade；The non-rectilinear groove of two shapes and positional symmetry is provided with the middle part of contact blade, contact blade is divided into the water conservancy diversion region between two non-rectilinear grooves and the arcing region on the outside of two non-rectilinear groove ends by non-rectilinear groove, and water conservancy diversion region and arcing region are electrically connected by conducting bridge；U-shaped iron core is arranged on the back of contact blade, and within arcing region；Anode contact system and cathode contact system are positioned opposite, and U-shaped opening direction unshakable in one's determination is configured in staggering 180 °；Structure of the present invention can significantly reduce the eddy-current loss in contact blade, reduce the loop resistance of vacuum interrupter；Increase strong longitudinal magnetic field region area while the longitudinal magnetic field between improving contact.
Description
Technical field
The invention belongs to technical field of vacuum switches, and in particular to a kind of high rated current longitudinal magnetic field vacuum interrupter is touched
Header structure.
Background technology
Vacuum interrupter is because of its characteristic such as simple in construction, non-maintaining and environment-friendly, and positive Transmission level direction is developed.
Rated current lift technique and high-current vacuum arc field control are the passes of Transmission level vacuum interrupter urgent need to resolve
Key technology.At present, in the design of Transmission level vacuum interrupter, it is typically employed in the mode for applying magnetic field in vacuum interrupter
To control vacuum arc, while reducing the loop resistance of vacuum interrupter as far as possible.In the prior art, a kind of horseshoe-shaped indulges magnetic
Contact indulges magnetic contact than coil form to be had smaller loop resistance and can provide stronger longitudinal magnetic field, as vacuum interrupter to
A kind of feasible program of Transmission level development.However, existing vacuum interrupter horseshoe-shaped is indulged in magnetic contact, contact blade is through-flow
When can produce stronger vortex so that the ac circuit resistance of vacuum interrupter is significantly increased, and is unfavorable for vacuum interrupter great number
The temperature rise control under electric current is determined, so as to limit the lifting that horseshoe-shaped indulges the specified through-current capability of magnetic contact vacuum interrupter.
The content of the invention
In order to overcome the problem of above-mentioned prior art is present, the present invention proposes a kind of high rated current longitudinal magnetic field vacuum
Arc-chutes structure of contact terminal, the structure can significantly reduce the eddy-current loss in contact blade, reduce the loop resistance of vacuum interrupter；
Increase strong longitudinal magnetic field region area while the longitudinal magnetic field between improving contact, be that a kind of high rated current that is applied to is transmitted electricity
The longitudinal field contact structure of grade vacuum interrupter.
To achieve the above objectives, the technical solution adopted by the present invention is：
A kind of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure, including it is arranged in structure phase in vacuum interrupter
Same anode contact system 1 and cathode contact system 2, the anode contact system 1 includes conducting rod 3, U-shaped unshakable in one's determination 4 and contact
Piece 5；The one end of conducting rod 3 is passed through at U-shaped 4 opening unshakable in one's determination, and is connected with contact blade 5；The middle part of contact blade 5 be provided with two shapes and
The non-rectilinear groove 9 of positional symmetry, 5 points by contact blade of non-rectilinear groove 9 is positioned at two non-rectilinear grooves, 9 water conservancy diversion regions 6
Arcing region 7 with the outside of two ends of non-rectilinear groove 9, two are passed through between the water conservancy diversion region 6 and arcing region 7
Conducting bridge 8 between the end of non-rectilinear groove 9 is electrically connected；U-shaped unshakable in one's determination 4 are arranged on the back of contact blade 5, and positioned at arcing area
Within domain 7；The anode contact system 1 and cathode contact system 2 are positioned opposite, and the front of contact blade 5 is relative, and makes U-shaped unshakable in one's determination 4
Opening direction configure in staggering 180 °.
The shape in the water conservancy diversion region 6 can be circular, ellipse, track type or other similar shapes, mainly be closed in contact
Guide functions are undertaken during conjunction；Arcing region 7 is the ablated area of vacuum arc after contact is separated, water conservancy diversion region 6 and arcing region
7 are electrically connected by conducting bridge 8.Relatively independent water conservancy diversion region 6 and the structure of arcing region 7 significantly can reduce on contact blade
Vortex, reduces vacuum interrupter loop resistance, while can increase the longitudinal magnetic field between contact.
Described U-shaped unshakable in one's determination 4 are formed using the stacking of magnetic conductive material thin slice 10 of one end open, can be reduced in U-shaped unshakable in one's determination 4
U-shaped 4 opening direction unshakable in one's determination in eddy-current loss, anode contact system 1 and cathode contact system 2 is configured in staggering 180 °, is being touched
Longitudinal magnetic field is produced between head.
Described U-shaped unshakable in one's determination 4 are arranged at the back of the arcing region 7 of contact blade 5 so that strong longitudinal magnetic field region 10 is located at arcing
In region 7, so as to efficiently separate water conservancy diversion region 6 and arcing region 7.
Compared with prior art, the invention has the advantages that：
(1) the specified through-current capability of the vacuum arc-extinguishing chamber contact structure in the present invention is stronger.By being set on contact blade
Relatively independent arcing region and water conservancy diversion region, rationally improve the eddy current path on contact blade, and greatly reduce contact blade
On eddy-current loss, correspondingly reduce the loop resistance of vacuum interrupter, effectively improve the specified through-flow of vacuum interrupter
Ability.
(2) the control arc ability of the vacuum arc-extinguishing chamber contact structure in the present invention is stronger.Using the structure of contact terminal in the present invention
Stronger longitudinal magnetic field can be produced between contact in vacuum interrupter drop-out current, big contact is enhanced and opens away from lower longitudinal magnetic field
To the control ability of vacuum arc, so as to improve the connecting-disconnecting function of vacuum interrupter.
(3) contact in the present invention is effectively bigger using area.Structure of contact terminal in the present invention rationally devises contact blade
On difference in functionality region (water conservancy diversion region and arcing region), this structure can greatly improve the area of arcing region medium-high magnetic field,
Effective arcing region of vacuum arc is added, makes arc energy in greater area of contact blade surface homogenous combustion.
(4) the vacuum extinction cell structure in the present invention is simpler.Structure of contact terminal proposed by the present invention only includes conducting rod, U
Iron-core and the part of contact blade three, simple in construction, high mechanical strength.
Brief description of the drawings
Fig. 1 is the schematic diagram of the high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure of the present invention.
Fig. 2 (a) is that the water conservancy diversion region of contact blade is circular schematic diagram.
Fig. 2 (b) is that the water conservancy diversion region of contact blade is the schematic diagram of ellipse.
Fig. 2 (c) is that the water conservancy diversion region of contact blade is the schematic diagram of track type.
Fig. 3 (a) is two U-shaped schematic diagrames positioned opposite unshakable in one's determination.
Fig. 3 (b) is magnetic conductive material thin slice schematic diagram.
Fig. 4 for the present invention high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure in contact blade with it is U-shaped unshakable in one's determination
Position view.
Fig. 5 touches for a kind of embodiment of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure of the present invention
Head central plane longitudinal magnetic field distribution map.
Fig. 6 (a) is the Eddy Distribution figure on contact blade in traditional horseshoe-shaped longitudinal field contact structure.
Fig. 6 (b) is a kind of embodiment of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure of the invention
Eddy Distribution figure on middle contact blade.
Embodiment
Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the schematic diagram of the high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure of the present invention, including structure is complete
Exactly the same anode contact system 1 and cathode contact system 2.The anode contact system 1 by conducting rod 3, U-shaped unshakable in one's determination 4 and touch
Head piece 5 is constituted.Side has U-shaped unshakable in one's determination the 4 of opening to be arranged at the dorsal part of contact blade 5, and conducting rod 3 is worn at U-shaped unshakable in one's determination 4 opening
Cross, use and be welded to connect between the end of conducting rod 3 and contact blade 5.Anode contact system 1 and cathode contact system 2 phase
To arrangement, the front of contact blade 5 is relative, and U-shaped unshakable in one's determination 4 opening direction in both sides is configured in staggering 180 °.
In the high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure of Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) for the present invention
Three kinds of embodiment schematic diagrames of contact blade.Contact blade 5 is provided with non-rectilinear groove 9, and the representative value of groove width is less than
2mm, 5 points by contact blade of non-rectilinear groove 9 is relatively independent water conservancy diversion region 6 and arcing region 7, and in water conservancy diversion region 6 and combustion
It is electrically connected between arc region 7 by conducting bridge 8.The water conservancy diversion region 6 undertakes the effect of conducting electric current in contact closure,
Its shape can be circle, ellipse, track type or other similar shapes.The arcing region 7 is vacuum electric after contact separation
The main ablated area of arc.Because water conservancy diversion region 6 and arcing region 7 are relatively independent, it can significantly reduce the vortex on contact blade, one
The loop resistance of vacuum interrupter when aspect can reduce contact closure, improves the specified through-current capability of arc-chutes；On the other hand
Inhibition of the vortex to changes of magnetic field can be reduced in arcing, the longitudinal magnetic field between contact is improved, it is easy to maintain electric arc
In diffusion state.
Fig. 3 (a), Fig. 3 (b) are U-shaped iron core in the high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure of the present invention
A kind of embodiment schematic diagram.U-shaped unshakable in one's determination 4 are formed using the stacking of magnetic conductive material thin slice 10.The magnetic conductive material
Thin slice 10 is the U-shaped structure that one end has opening.U-shaped 4 openings unshakable in one's determination in anode contact system 1 and cathode contact system 2
Configured in staggering 180 °, longitudinal magnetic field can be produced between contact.Because U-shaped unshakable in one's determination 4 use lamination, it can be reduced
In vortex, reduce arc-chutes total losses.
Fig. 4 for the present invention high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure in contact blade with it is U-shaped unshakable in one's determination
Position view.U-shaped unshakable in one's determination 4 are arranged at the dorsal part of contact blade 5, and within arcing region 7, collect strong longitudinal magnetic field region 11
In within arcing region 7.In drop-out current, because strong longitudinal magnetic field region 11 is concentrated within arcing region 7, vacuum electric
Arc can be transferred in arcing region 7 under the traction of longitudinal magnetic field by conducting bridge 8 to burn, and is only located at the strong ablated area of electric arc
In arcing region 7, it is to avoid ablation of the electric arc to water conservancy diversion region 6, water conservancy diversion region 6 and arcing region 7 have been efficiently separated.
Fig. 5 touches for a kind of embodiment of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure of the present invention
Head central plane longitudinal magnetic field distribution map, strong longitudinal magnetic field region 11 is fully located in arcing region 7.Touched using present embodiment
The longitudinal magnetic field peak value of header structure improves 15% compared to traditional horseshoe-shaped longitudinal field contact structure, is conducive to large opening
Under control to electric arc；High magnetic field area area improves 30%, it is to avoid concentration ablation of the electric arc to contact blade under high current.
Fig. 6 (a), Fig. 6 (b) are respectively that traditional horseshoe-shaped longitudinal field contact structure and high rated current of the invention are indulged
The Eddy Distribution figure of contact blade into a kind of embodiment of magnetic field vacuum arc-extinguishing chamber contact structure.The structure of contact terminal of the present invention
Non-rectilinear groove 9 on middle contact blade 5 has blocked vortex to flow to outer edge by the center of contact blade and flow to contact by outer edge
The path at piece center, makes eddy current path elongated, reduces the vortex in contact blade 5, reduces eddy-current loss, vacuum interrupter
Loop resistance reduces 40% compared to traditional horseshoe-shaped longitudinal field contact structure.
Above description is only a kind of specific reality of the high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure of the present invention
Mode is applied, those skilled in the art can make various changes according to the principle of the present invention to embodiments thereof.The present invention
Protection domain be only limited by the claims that follow.
Claims (5)
1. a kind of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure, it is characterised in that：Including being arranged in vacuum extinction
Structure identical anode contact system (1) and cathode contact system (2) in room, the anode contact system (1) include conducting rod
(3), U-shaped (4) unshakable in one's determination and contact blade (5)；Conducting rod (3) one end is passed through at U-shaped (4) opening unshakable in one's determination, and with contact blade (5) even
Connect；It is provided with the non-rectilinear groove (9) of two shapes and positional symmetry in the middle part of contact blade (5), non-rectilinear groove (9) is by contact blade
(5) it is divided into the water conservancy diversion region (6) between two non-rectilinear grooves (9) and on the outside of two non-rectilinear groove (9) ends
Arcing region (7), passes through the conduction between two non-rectilinear groove (9) ends between the water conservancy diversion region (6) and arcing region (7)
Bridge (8) is electrically connected；U-shaped iron core (4) is arranged on the back of contact blade (5), and within arcing region (7)；The sun
Pole contact system (1) and cathode contact system (2) are positioned opposite, and contact blade (5) front is relative, and make the opening of U-shaped (4) unshakable in one's determination
Direction is configured in staggering 180 °.
2. a kind of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure according to claim 1, it is characterised in that：
The water conservancy diversion region (6) is circular, ellipse or track type.
3. a kind of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure according to claim 1, it is characterised in that：
Described U-shaped (4) unshakable in one's determination are stacked using the magnetic conductive material thin slice (10) of one end open and formed.
4. a kind of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure according to claim 1, it is characterised in that：
Welded with contact blade (5) one end of the conducting rod (3).
5. a kind of high rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure according to claim 1, it is characterised in that：
The representative value of non-rectilinear groove (9) groove width is less than 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419825.0A CN107093535B (en) | 2017-06-06 | 2017-06-06 | High-rated-current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419825.0A CN107093535B (en) | 2017-06-06 | 2017-06-06 | High-rated-current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107093535A true CN107093535A (en) | 2017-08-25 |
| CN107093535B CN107093535B (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710419825.0A Active CN107093535B (en) | 2017-06-06 | 2017-06-06 | High-rated-current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure |
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| Country | Link |
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| CN (1) | CN107093535B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379670A (en) * | 2019-07-18 | 2019-10-25 | 西安交通大学 | A kind of high throughflow ability vacuum interrupter with fixed fracture |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4415787A (en) * | 1980-12-22 | 1983-11-15 | Mitsubishi Denki Kabushiki Kaisha | Vacuum interrupter |
| US4855547A (en) * | 1985-11-12 | 1989-08-08 | Mitsubishi Denki Kabushiki Kaisha | Vacuum interrupter |
| DE19716278A1 (en) * | 1997-04-18 | 1998-10-22 | Abb Patent Gmbh | Vacuum switching device |
| CN106128851A (en) * | 2016-06-30 | 2016-11-16 | 西安交通大学 | The compound vertical Magnet core type structure of contact terminal of a kind of novel two plate and vacuum interrupter |
| CN206849764U (en) * | 2017-06-06 | 2018-01-05 | 西安交通大学 | High rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure |
-
2017
- 2017-06-06 CN CN201710419825.0A patent/CN107093535B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4415787A (en) * | 1980-12-22 | 1983-11-15 | Mitsubishi Denki Kabushiki Kaisha | Vacuum interrupter |
| US4855547A (en) * | 1985-11-12 | 1989-08-08 | Mitsubishi Denki Kabushiki Kaisha | Vacuum interrupter |
| DE19716278A1 (en) * | 1997-04-18 | 1998-10-22 | Abb Patent Gmbh | Vacuum switching device |
| CN106128851A (en) * | 2016-06-30 | 2016-11-16 | 西安交通大学 | The compound vertical Magnet core type structure of contact terminal of a kind of novel two plate and vacuum interrupter |
| CN206849764U (en) * | 2017-06-06 | 2018-01-05 | 西安交通大学 | High rated current longitudinal magnetic field vacuum arc-extinguishing chamber contact structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379670A (en) * | 2019-07-18 | 2019-10-25 | 西安交通大学 | A kind of high throughflow ability vacuum interrupter with fixed fracture |
| CN110379670B (en) * | 2019-07-18 | 2020-11-17 | 西安交通大学 | High-current-capacity vacuum arc extinguish chamber with fixed fracture |
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| Publication number | Publication date |
|---|---|
| CN107093535B (en) | 2020-02-11 |
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