CN107123566A - 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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- CN107123566A CN107123566A CN201710414897.6A CN201710414897A CN107123566A CN 107123566 A CN107123566 A CN 107123566A CN 201710414897 A CN201710414897 A CN 201710414897A CN 107123566 A CN107123566 A CN 107123566A
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- Prior art keywords
- contact
- vacuum interrupter
- flow
- magnetic conduction
- conduction construction
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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
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 include contact blade, are arranged on the magnetic conduction construction of the single-open at contact blade back；Conducting rod is connected by flow-guiding structure with contact blade, and through at the opening of magnetic conduction construction, flow-guiding structure and magnetic conduction construction are welded and fixed with contact blade use；The cathode contact system is identical with anode contact system architecture, and arrangement is that contact blade is positioned opposite, and makes the opening direction of magnetic conduction construction opposite；The conducting rod, contact blade and flow-guiding structure composition galvanic circle, magnetic conduction construction composition magnetic conductive loop；Structure of the present invention can improve the longitudinal magnetic field intensity in vacuum interrupter, increase strong longitudinal magnetic field region, increase existing vacuum interrupter longitudinal magnetic field, the most long arcing distance of vacuum arc is effectively improved, while having relatively low 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 of vacuum interrupter is touched
Header structure.
Background technology
High-pressure vacuum breaker is important switchgear in power system, because it has small volume, simple in construction, environment
Friendly, non-maintaining the advantages of.At present, in order to improve the connecting-disconnecting function of high voltage vacuum interrupter, it is typically employed in vacuum interrupter
The mode in middle application magnetic field controls vacuum arc.In addition, the nominal current level in order to lift high-pressure vacuum breaker, needs drop
The loop resistance of low vacuum arc-chutes current-carrying part.In the prior art, a kind of horseshoe-shaped, which indulges magnetic contact, to reduce true effective
While empty arc-chutes loop resistance, stronger longitudinal magnetic field is provided in vacuum interrupter to control vacuum arc, be lifting
A kind of effective scheme of High Voltage Vacuum Circuit Breakers rated current.Deposited however, vacuum interrupter horseshoe-shaped indulges magnetic contact
Effectively control the most long 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 exceed 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 of the vertical magnetic contact of horseshoe-shaped limits it and opened in voltage levels, greatly
Away from the application in vacuum interrupter.
The content of the invention
In order to overcome the problem of above-mentioned prior art is present, it is ambipolar compound vertical that the present invention proposes a kind of vacuum interrupter
To magnetic field structure of contact terminal, the structure 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 most long arcing distance of vacuum arc, while having relatively low vacuum extinction
Room loop resistance, be it is a kind of have conducting high rated current and cut-off big short circuit current flow 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：
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, are arranged on the one side at the back of contact blade 3
The magnetic conduction construction 2 of opening；Conducting rod 1 is connected by flow-guiding structure 4 with contact blade 3, and through magnetic conduction construction 2 opening at, lead
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 with the structure of anode contact system 6, 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 the composition of flow-guiding structure 4 galvanic circle, the composition magnetic conductive loop of magnetic conduction construction 2.
The mode that is welded and fixed is argon arc welding 5, and flow-guiding structure 4 is welded and fixed the center that position is magnetic conduction construction 2.
The ambipolar compound longitudinal field contact structure is produced between anode contact system 6 and cathode contact system 7
The longitudinal magnetic field longitudinal main field 8 produced by magnetic conduction construction 2 and the complex group of longitudinally adjust magnetic field 9 produced by flow-guiding structure 4
Into longitudinal main field 8 is identical with the polarity of longitudinally adjust magnetic field 9, is overlapped mutually.
The magnetic conduction construction 2 is made up of magnetic conductive material, is shaped as the annulus post with scarf, and in scarf side tool
There are width and annulus post interior diameter identical groove, general structure is in Horseshoe.
The cross section of the flow-guiding structure 4 is slightly larger than conducting rod 1, and non-penetrating groove is provided with bottom, same in the middle part of side
It is provided with non-penetrating groove.Electric current is guided to produce the component perpendicular to conducting rod 1 when electric current flows through flow-guiding structure 4, between contact
Longitudinally adjust magnetic field 9 is produced in gap.
The cross section of the flow-guiding structure 4 is the circle with conducting rod same diameter, non-penetrating groove is provided with its bottom, at it
Side middle part is provided with wedge-shaped slot, and the non-penetrating groove in wedge-shaped slot using stainless steel 10 with being filled；Electric current flows through flow-guiding structure 4
When guiding electric current produce component perpendicular to conducting rod 1, to produce longitudinally adjust magnetic field 9 in contact gap.
Compared with prior art, the invention has the advantages 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, negative electrode.Meanwhile, alternating current stream
During through flow-guiding structure in galvanic circle, it can be produced between anode, cathode contact and main field polarity identical longitudinally adjust magnetic
.Above-mentioned two longitudinal magnetic field is being superimposed between anode, cathode contact, can be improved big contact and be opened the longitudinal magnetic field intensity away under；
The peak point of the longitudinal magnetic field produced due to flow-guiding structure is closer to contact blade center, the magnetic field superposition produced 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 improve the most long arcing distance of vacuum arc, opened so as 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 is opened
Cutting capacity.
(2) present invention has high rated current ducting capacity：When vacuum interrupter closes state, vacuum interrupter
Galvanic circle be：Electric current is flowed through after flow-guiding structure from the conducting rod in anode contact system, reaches 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 relatively low, therefore the structure of contact terminal system has high rated current ducting capacity.
Brief description of the drawings
Fig. 1 is the schematic diagram of the ambipolar compound longitudinal field contact structure of the present invention.
Fig. 2 produces schematic diagram for the magnetic field of the ambipolar compound longitudinal field contact structure of the present invention.
Fig. 3 a overlook for a kind of embodiment of magnetic conduction construction in the ambipolar compound longitudinal field contact structure of the present invention
Figure, Fig. 3 b are a kind of embodiment front view of magnetic conduction construction in ambipolar compound longitudinal field contact structure of the invention.
Fig. 4 a are 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 illustrates for the another embodiment of flow-guiding structure in the ambipolar compound longitudinal field contact structure of the present invention
Figure.
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 ambipolar compound longitudinal field contact structure of the present invention, including anode contact system 6 and the moon
Pole contact system 7, the two structure is identical and is arranged in vacuum interrupter.Anode contact system 6 and cathode contact system
Include galvanic circle and magnetic conductive loop in system 7, the galvanic circle is made up of conducting rod 1, contact blade 3 and flow-guiding structure 4；Institute
Magnetic conductive loop is stated to be made up of magnetic conduction construction 2.The magnetic conduction construction 2 of single-open is arranged in the back of contact blade 3, and conducting rod 1 is by leading
Flow structure 4 is connected with contact blade 3, and through magnetic conduction construction 2 opening at.The magnetic conduction construction 2 is solid using welding with contact blade 3
Fixed, one end of the flow-guiding structure 4 is connected 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 the mode of argon arc welding 5.The arrangement side of anode contact system 6 and cathode contact system 7
Formula is that contact blade 3 is positioned opposite, and makes the opening direction of magnetic conduction construction 2 opposite.
Fig. 2 produces schematic diagram for the magnetic field of the ambipolar compound longitudinal field contact structure of the present 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 11In the presence of, produced in magnetic conduction construction 2
Perpendicular to the magnetic field of conducting rod 1, because magnetic conduction construction 2 has opening, when clearance between open contacts are smaller, anode contact system 6 and the moon
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 both sides change direction, and longitudinal main field 8 is produced in contact gap.On the other hand, the electric current I in flow-guiding structure 42Work
Under, it can be produced around flow-guiding structure 4 perpendicular to the toroidal magnetic field of the electric current, longitudinal component of the magnetic field in contact gap
As longitudinally adjust magnetic field 9.Longitudinal main field 8 is identical with the polarity of longitudinally adjust magnetic field 9, 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 up of magnetic conductive material, is shaped as the annulus post with scarf, and have in scarf side
Width and annulus post interior diameter identical groove, general 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 thick non-penetrating grooves of 2mm is provided with bottom, in the middle part of side
Equally it is provided with the thick non-penetrating grooves of 2mm.Electric current is guided to produce the component perpendicular to conducting rod 1 when electric current flows through flow-guiding structure 4,
To produce longitudinally adjust magnetic field 9 in contact gap.
Fig. 5 illustrates for the another embodiment of flow-guiding structure in the ambipolar compound longitudinal field contact structure of the present invention
Figure.The cross section of flow-guiding structure 4 is the circle with conducting rod same diameter, the thick non-penetrating grooves of 2mm is provided with its bottom, in its side
Middle face is provided with wedge-shaped slot, and the non-penetrating groove in wedge-shaped slot using stainless steel 10 with being filled；When electric current flows through flow-guiding structure 4
Electric current is guided to produce the component perpendicular to conducting rod 1, to produce longitudinally adjust magnetic field 9 in contact gap.
Above description be only the present invention the ambipolar compound longitudinal field contact structure of vacuum interrupter embodiment it
One, engineer in the art can make part modification to structure of contact terminal according to its operation principle or design other and similar touch
Header structure.Protection scope of the present invention is only limited by the claims that follow.
Claims (6)
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), set
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)
Connect, and through at the opening of magnetic conduction construction (2), the use of flow-guiding structure (4) and contact blade (3) 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 with anode contact system (6) structure, and arrangement is
Contact blade (3) is positioned opposite, and makes the opening direction of magnetic conduction construction (2) opposite；The conducting rod (1), contact blade (3) and water conservancy diversion
Structure (4) constitutes galvanic circle, magnetic conduction construction (2) composition magnetic conductive loop.
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 flow-guiding structure (4) is welded and fixed the center that position is magnetic conduction construction (2).
3. the ambipolar compound longitudinal field contact structure of a kind of vacuum interrupter according to claim 1, it is characterised in that：
It is vertical that the ambipolar compound longitudinal field contact structure is produced between anode contact system (6) and cathode contact system (7)
The longitudinal main field (8) produced to magnetic field by magnetic conduction construction (2) and the longitudinally adjust magnetic field (9) produced by flow-guiding structure (4) are multiple
It is combined into, longitudinal main field (8) is identical with longitudinally adjust magnetic field (9) polarity, is overlapped mutually.
4. 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 up of magnetic conductive material, is shaped as the annulus post with scarf, and have width in scarf side
With annulus post interior diameter identical groove, general structure is in Horseshoe.
5. the ambipolar compound longitudinal field contact structure of a kind of vacuum interrupter according to claim 1, it is characterised in that：
The cross section of the flow-guiding structure (4) is slightly larger than conducting rod (1), and non-penetrating groove is provided with bottom, is equally provided with the middle part of side
Non-penetrating groove.Electric current is guided to produce the component perpendicular to conducting rod (1) when electric current flows through flow-guiding structure (4), between contact
Longitudinally adjust magnetic field (9) are produced in gap.
6. the ambipolar compound longitudinal field contact structure of a kind of vacuum interrupter according to claim 1, it is characterised in that：
The cross section of the flow-guiding structure (4) is the circle with conducting rod same diameter, non-penetrating groove is provided with its bottom, in its side
Portion is provided with wedge-shaped slot, and the non-penetrating groove in wedge-shaped slot using stainless steel (10) with being filled；When electric current flows through flow-guiding structure (4)
Electric current is guided to produce the component perpendicular to conducting rod (1), to produce longitudinally adjust magnetic field (9) in contact gap.
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 true CN107123566A (en) | 2017-09-01 |
| CN107123566B CN107123566B (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| Country | Link |
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| CN (1) | CN107123566B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509856A (en) * | 2020-09-25 | 2021-03-16 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509856A (en) * | 2020-09-25 | 2021-03-16 | 平高集团有限公司 | Contact coil for generating arc extinguishing magnetic field and vacuum arc extinguishing chamber contact structure |
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| CN107123566B (en) | 2019-08-23 |
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