CN107123566B - A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter - Google Patents
A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter Download PDFInfo
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- CN107123566B CN107123566B CN201710414897.6A CN201710414897A CN107123566B CN 107123566 B CN107123566 B CN 107123566B CN 201710414897 A CN201710414897 A CN 201710414897A CN 107123566 B CN107123566 B CN 107123566B
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- contact
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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)
Abstract
A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter, including the anode contact system and cathode contact system being arranged in vacuum interrupter, anode contact system includes contact blade, and the magnetic conduction construction of the single-open at contact blade back is arranged in；Conducting rod is connect by flow-guiding structure with contact blade, and is used and be welded and fixed with contact blade across the opening of magnetic conduction construction, flow-guiding structure and magnetic conduction construction；The cathode contact system is identical as anode contact system structure, and arrangement is that contact blade is positioned opposite, and keeps the opening direction of magnetic conduction construction opposite；The conducting rod, contact blade and flow-guiding structure form galvanic circle, and magnetic conduction construction forms magnetic conductive loop；Structure of the invention can improve the longitudinal magnetic field intensity in vacuum interrupter, increase strong longitudinal magnetic field region, increase existing vacuum interrupter longitudinal magnetic field, effectively improve the longest arcing distance of vacuum arc, while have lower vacuum interrupter loop resistance.
Description
Technical field
The invention belongs to technical field of vacuum switches, and in particular to a kind of ambipolar compound longitudinal magnetic field touching of vacuum interrupter
Header structure.
Background technique
High-pressure vacuum breaker is switchgear important in electric system, because it is with small in size, structure is simple, environment
The advantages that friendly, non-maintaining.Currently, being typically employed in vacuum interrupter to improve the connecting-disconnecting function of high voltage vacuum interrupter
The middle mode for applying magnetic field controls vacuum arc.In addition, needing to drop to promote the nominal current level of high-pressure vacuum breaker
The loop resistance of low vacuum arc-chutes current-carrying part.In the prior art, a kind of horseshoe-shaped is indulged magnetic contact and can be effectively reduced very
While empty arc-chutes loop resistance, stronger longitudinal magnetic field is provided in vacuum interrupter to control vacuum arc, is to be promoted
A kind of effective scheme of High Voltage Vacuum Circuit Breakers rated current.It is deposited however, vacuum interrupter horseshoe-shaped indulges magnetic contact
Effectively control the longest arcing distance of vacuum arc in a longitudinal magnetic field, i.e., it is vertical between contact with the increase of clearance between open contacts
Constantly reduce to magnetic field, and when clearance between open contacts are more than a certain particular value, vacuum arc can not effectively be controlled by longitudinal magnetic field, be led
Vacuum interrupter is caused to lose connecting-disconnecting function.The above-mentioned characteristic that horseshoe-shaped indulges magnetic contact limits it and opens in voltage levels, greatly
Away from the application in vacuum interrupter.
Summary of the invention
In order to overcome the above-mentioned problems of the prior art, it is ambipolar compound vertical that the invention proposes a kind of vacuum interrupters
To magnetic field structure of contact terminal, which can improve the longitudinal magnetic field intensity in vacuum interrupter, increase strong longitudinal magnetic field region, increase
Existing vacuum interrupter longitudinal magnetic field, effectively improves the longest arcing distance of vacuum arc, while having lower vacuum extinction
Room loop resistance, be it is a kind of with conducting high rated current and cut-off big short circuit current ability high voltage vacuum interrupter it is compound vertical
To magnetic field structure of contact terminal.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter, including the anode being arranged in vacuum interrupter
Contact system 6 and cathode contact system 7, the anode contact system 6 include contact blade 3, and the unilateral side at 3 back of contact blade is arranged in
The magnetic conduction construction 2 of opening；Conducting rod 1 is connect by flow-guiding structure 4 with contact blade 3, and passes through the opening of magnetic conduction construction 2, is led
Flow structure 4 is used with contact blade 3 and is welded and fixed；Magnetic conduction construction 2 is used with contact blade 3 and is welded and fixed；The cathode contact system 7
Identical as 6 structure of anode contact system, arrangement is that contact blade 3 is positioned opposite, and makes the opening direction phase of magnetic conduction construction 2
Instead；The conducting rod 1, contact blade 3 and flow-guiding structure 4 form galvanic circle, and magnetic conduction construction 2 forms magnetic conductive loop.
The mode that is welded and fixed is argon arc welding 5, and the center that position is magnetic conduction construction 2 is welded and fixed in flow-guiding structure 4.
The ambipolar compound longitudinal field contact structure generates between anode contact system 6 and cathode contact system 7
The longitudinal magnetic field longitudinal main field 8 generated by magnetic conduction construction 2 and 9 complex group of vertical adjustment magnetic field generated by flow-guiding structure 4
At the longitudinal direction main field 8 is identical as 9 polarity of vertical adjustment magnetic field, is overlapped mutually.
The magnetic conduction construction 2 is made of magnetic conductive material, and shape is the annulus column with scarf, and has in scarf side
There is width slot identical with annulus column interior diameter, overall structure is in Horseshoe.
The cross section of the flow-guiding structure 4 is slightly larger than conducting rod 1, is provided with non-through slot in bottom, same in the middle part of side
It is provided with non-through slot.Electric current is guided to generate the component perpendicular to conducting rod 1 when electric current flows through flow-guiding structure 4, between contact
Vertical adjustment magnetic field 9 is generated in gap.
The cross section of the flow-guiding structure 4 is the circle with conducting rod same diameter, non-through slot is provided in its bottom, at it
It is provided with wedge groove in the middle part of side, the filling of stainless steel 10 is all made of in the non-through slot and wedge groove；Electric current flows through flow-guiding structure 4
When guidance electric current generate perpendicular to conducting rod 1 component, in contact gap generate vertical adjustment magnetic field 9.
Compared with prior art, the present invention has the advantage that
(1) there is the present invention big contact to open the high-current on-off ability away under: in vacuum interrupter switching process, anode
Magnetic conductive loop in contact system and cathode contact system can form longitudinal main field in anode, cathode.Meanwhile alternating current stream
When through flow-guiding structure in galvanic circle, vertical adjustment magnetic identical with main field polarity can be generated between anode, cathode contact
?.Above-mentioned two longitudinal magnetic field is being superimposed between anode, cathode contact, and big contact can be improved and open the longitudinal magnetic field intensity away under；
The peak point of the longitudinal magnetic field generated due to flow-guiding structure is closer to contact blade center, the magnetic field superposition that generates with magnetic conductive loop
Afterwards, the more existing structure of contact terminal of high magnetic field area area between contact is bigger and closer to contact center, increases strong longitudinal flux place
Domain；Increase existing vacuum interrupter longitudinal magnetic field, effectively improves the longest arcing distance of vacuum arc, opened to improve big contact
High-current vacuum arc longitudinal magnetic field control ability away under, the high current that final raising vacuum interrupter big contact is opened away under are opened
Cutting capacity.
(2) present invention has high rated current ducting capacity: when vacuum interrupter closes state, vacuum interrupter
Galvanic circle are as follows: after electric current flows through flow-guiding structure from the conducting rod in anode contact system, reach anode contact piece, Zhi Houyi
Secondary cathode contact piece, flow-guiding structure and the conducting rod flowed through in cathode contact system.Due to electric current leading in vacuum interrupter
Flow path is shorter, and the loop resistance of vacuum interrupter is lower, therefore the structure of contact terminal system has high rated current ducting capacity.
Detailed description of the invention
Fig. 1 is the schematic diagram of ambipolar compound longitudinal field contact structure of the invention.
Fig. 2 is the magnetic field production principle figure of ambipolar compound longitudinal field contact structure of the invention.
Fig. 3 a is that a kind of embodiment of magnetic conduction construction in ambipolar compound longitudinal field contact structure of the invention is overlooked
Figure, Fig. 3 b are a kind of embodiment main view of magnetic conduction construction in ambipolar compound longitudinal field contact structure of the invention.
Fig. 4 a is a kind of embodiment main view of flow-guiding structure in ambipolar compound longitudinal field contact structure of the invention
Figure, Fig. 4 b are a kind of embodiment top view of flow-guiding structure in ambipolar compound longitudinal field contact structure of the invention.
Fig. 5 is the another embodiment signal of flow-guiding structure in ambipolar compound longitudinal field contact structure of the invention
Figure.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawing.
Fig. 1 is the schematic diagram of ambipolar compound longitudinal field contact structure of the invention, including anode contact system 6 and yin
Pole contact system 7, the two structure is identical and is arranged in vacuum interrupter.Anode contact system 6 and cathode contact system
It include galvanic circle and magnetic conductive loop in system 7, the galvanic circle is made of conducting rod 1, contact blade 3 and flow-guiding structure 4；Institute
Magnetic conductive loop is stated to be made of magnetic conduction construction 2.The magnetic conduction construction 2 of single-open is arranged in 3 back of contact blade, and conducting rod 1 is by leading
Flow structure 4 is connect with contact blade 3, and passes through the opening of magnetic conduction construction 2.The magnetic conduction construction 2 is solid using welding with contact blade 3
Fixed, one end of the flow-guiding structure 4 is connect with conducting rod 1, and the other end is welded and fixed with contact blade 3, described to be welded and fixed 5 and be located at
The central side of magnetic conduction construction 2, and welded using 5 mode of argon arc welding.The arrangement side of anode contact system 6 and cathode contact system 7
Formula is that contact blade 3 is positioned opposite, and keeps the opening direction of magnetic conduction construction 2 opposite.
Fig. 2 is the magnetic field production principle figure of ambipolar compound longitudinal field contact structure of the invention.When electric current flows through sun
When pole contact system 6 and cathode contact system 7, the on the one hand electric current I in conducting rod 11Under the action of, it is generated in magnetic conduction construction 2
Perpendicular to the magnetic field of conducting rod 1, since magnetic conduction construction 2 has opening, when clearance between open contacts are smaller, anode contact system 6 and yin
Magnetic resistance between the magnetic conduction construction 2 of pole contact system 7 is less than the magnetic resistance between single magnetic conduction construction 2 opening, and magnetic field can be in magnetic conduction construction 2
Be open two sides change direction, and longitudinal main field 8 is generated in contact gap.On the other hand, the electric current I in flow-guiding structure 42Work
Under, the toroidal magnetic field perpendicular to the electric current, longitudinal component of the magnetic field in contact gap can be generated around flow-guiding structure 4
As vertical adjustment magnetic field 9.The longitudinal direction main field 8 is identical as 9 polarity of vertical adjustment magnetic field, is overlapped mutually.
Fig. 3 a and Fig. 3 b are a kind of embodiment party of magnetic conduction construction in ambipolar compound longitudinal field contact structure of the invention
Formula schematic diagram.Magnetic conduction construction 2 is made of magnetic conductive material, and shape is the annulus column with scarf, and is had in scarf side
Width slot identical with annulus column interior diameter, overall structure are in Horseshoe.
Fig. 4 a and Fig. 4 b are a kind of embodiment party of flow-guiding structure in ambipolar compound longitudinal field contact structure of the invention
Formula schematic diagram.The cross section of flow-guiding structure 4 is slightly larger than conducting rod 1, the non-through slot of 2mm thickness is provided in bottom, in the middle part of side
Equally it is provided with the non-through slot of 2mm thickness.Electric current is guided to generate the component perpendicular to conducting rod 1 when electric current flows through flow-guiding structure 4,
To generate vertical adjustment magnetic field 9 in contact gap.
Fig. 5 is the another embodiment signal of flow-guiding structure in ambipolar compound longitudinal field contact structure of the invention
Figure.The cross section of flow-guiding structure 4 is the circle with conducting rod same diameter, the non-through slot of 2mm thickness is provided in its bottom, in its side
Middle face is provided with wedge groove, and the filling of stainless steel 10 is all made of in the non-through slot and wedge groove；When electric current flows through flow-guiding structure 4
Electric current is guided to generate the component perpendicular to conducting rod 1, to generate vertical adjustment magnetic field 9 in contact gap.
Above description be only the ambipolar compound longitudinal field contact structure of vacuum interrupter of the invention embodiment it
One, engineer in the art can make part modification to structure of contact terminal according to its working principle or design other similar touching
Header structure.Protection scope of the present invention is only limited by the claims that follow.
Claims (3)
1. a kind of ambipolar compound longitudinal field contact structure of vacuum interrupter, it is characterised in that: including being arranged in vacuum extinction
Anode contact system (6) and cathode contact system (7) in room, the anode contact system (6) include contact blade (3), setting
In the magnetic conduction construction (2) of the single-open at contact blade (3) back；Conducting rod (1) is connected by flow-guiding structure (4) and contact blade (3)
It connects, and passes through the opening of magnetic conduction construction (2), flow-guiding structure (4) is used with contact blade (3) and is welded and fixed；Magnetic conduction construction (2) with
Contact blade (3) is used and is welded and fixed；The cathode contact system (7) is identical as anode contact system (6) structure, and arrangement is
Contact blade (3) is positioned opposite, and keeps the opening direction of magnetic conduction construction (2) opposite；The conducting rod (1), contact blade (3) and water conservancy diversion
Structure (4) forms galvanic circle, and magnetic conduction construction (2) forms magnetic conductive loop；
The ambipolar compound longitudinal field contact structure generates between anode contact system (6) and cathode contact system (7)
The longitudinal magnetic field longitudinal main field (8) generated by magnetic conduction construction (2) and the vertical adjustment magnetic field generated by flow-guiding structure (4)
(9) compound composition, the longitudinal direction main field (8) is identical as vertical adjustment magnetic field (9) polarity, is overlapped mutually；
The cross section of the flow-guiding structure (4) is slightly larger than conducting rod (1), is provided with non-through slot in bottom, same in the middle part of side
It is provided with non-through slot, guides electric current to generate the component perpendicular to conducting rod (1) when electric current flows through flow-guiding structure (4), to touch
Head generates vertical adjustment magnetic field (9) in gap.
2. the ambipolar compound longitudinal field contact structure of a kind of vacuum interrupter according to claim 1, it is characterised in that:
The mode that is welded and fixed is argon arc welding (5), and the center that position is magnetic conduction construction (2) is welded and fixed in flow-guiding structure (4).
3. the ambipolar compound longitudinal field contact structure of a kind of vacuum interrupter according to claim 1, it is characterised in that:
The magnetic conduction construction (2) is made of magnetic conductive material, and shape is the annulus column with scarf, and has width in scarf side
Slot identical with annulus column interior diameter, overall structure are in Horseshoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710414897.6A CN107123566B (en) | 2017-06-05 | 2017-06-05 | A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710414897.6A CN107123566B (en) | 2017-06-05 | 2017-06-05 | A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107123566A CN107123566A (en) | 2017-09-01 |
| CN107123566B true CN107123566B (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710414897.6A Active CN107123566B (en) | 2017-06-05 | 2017-06-05 | A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112509856B (en) * | 2020-09-25 | 2022-10-21 | 平高集团有限公司 | Contact coil for generating arc extinguishing magnetic field and vacuum arc extinguishing chamber contact structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3502945A1 (en) * | 1985-01-25 | 1985-08-14 | Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka | Electrical vacuum-switching chamber |
| CN2747700Y (en) * | 2004-11-29 | 2005-12-21 | 西安交通大学 | Single-turn type contact for vacuum arc-extiguishing chamber |
| CN2751425Y (en) * | 2004-11-29 | 2006-01-11 | 西安交通大学 | Bipolar contact for vacuum arc extinguish chamber |
| CN201364855Y (en) * | 2009-01-14 | 2009-12-16 | 湖北汉光科技股份有限公司 | Vacuum switch tube |
| CN106571265A (en) * | 2016-10-17 | 2017-04-19 | 西安交通大学 | Iron core type horizontal and vertical magnetic field combined contact of vacuum arc-extinguishing chamber |
-
2017
- 2017-06-05 CN CN201710414897.6A patent/CN107123566B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3502945A1 (en) * | 1985-01-25 | 1985-08-14 | Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka | Electrical vacuum-switching chamber |
| CN2747700Y (en) * | 2004-11-29 | 2005-12-21 | 西安交通大学 | Single-turn type contact for vacuum arc-extiguishing chamber |
| CN2751425Y (en) * | 2004-11-29 | 2006-01-11 | 西安交通大学 | Bipolar contact for vacuum arc extinguish chamber |
| CN201364855Y (en) * | 2009-01-14 | 2009-12-16 | 湖北汉光科技股份有限公司 | Vacuum switch tube |
| CN106571265A (en) * | 2016-10-17 | 2017-04-19 | 西安交通大学 | Iron core type horizontal and vertical magnetic field combined contact of vacuum arc-extinguishing chamber |
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| CN107123566A (en) | 2017-09-01 |
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