CN106653466A - Vacuum interrupter contact through combination of cup-shaped transverse magnetic fields and longitudinal magnetic fields - Google Patents
Vacuum interrupter contact through combination of cup-shaped transverse magnetic fields and longitudinal magnetic fields Download PDFInfo
- Publication number
- CN106653466A CN106653466A CN201610901065.2A CN201610901065A CN106653466A CN 106653466 A CN106653466 A CN 106653466A CN 201610901065 A CN201610901065 A CN 201610901065A CN 106653466 A CN106653466 A CN 106653466A
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- China
- Prior art keywords
- contact
- cup
- magnetic field
- magnetic fields
- cups
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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
- H01H33/6642—Contacts; Arc-extinguishing means, e.g. arcing rings having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a vacuum interrupter contact through combination of cup-shaped transverse magnetic fields and longitudinal magnetic fields, wherein the vacuum interrupter contact belongs to the technical field of electric appliances. The vacuum interrupter contact comprises a pair of conductive rods, a pair of contact cups and a pair of contact pieces, wherein the openings of the contact cups are oppositely placed. The pair of contact pieces is connected with the openings of the contact cups. The conductive rods in a pair are connected with outside of bottom of the two contact cups and extend in opposite directions. The bottom of each contact cup is provided with troughs which have a specific shape and are arranged so that spiral current arrangement on the cup bottom can be controlled. The cup wall is provided with oblique troughs for realizing a fact that current density on the cup wall has an annular component. The contact pieces are flaky and are used as arc-starting and arcing components. In current breaking by the vacuum interrupter contact, certain longitudinal magnetic fields can be generated through spiral current arrangement which is controlled by the troughs at the bottom of the two contact cups, and furthermore the longitudinal magnetic fields can be overlapped and reinforced; transverse magnetic fields can be generated through current distribution which is controlled by the oblique troughs on the walls of the contact cups, and furthermore the transverse magnetic fields are overlapped and reinforced between the contact pieces.
Description
Technical field：
The invention belongs to technical field of electric appliances, and in particular to a kind of cup-shaped transverse magnetic field is combined vacuum extinction with longitudinal magnetic field
Chamber contact.
Background technology：
Due to a series of unique advantages of vacuum switch so as to occupy leading position in middle pressure field.With production water
The raising that flat progress and user is required, product competition is more and more fierce, and development performance is good, simple structure, production cost
Low vacuum interrupter is the urgent needss for improving product competitiveness.In order to improve the Breaking capacity and cut-offfing property of vacuum interrupter
Energy, horizontal magnetic contact and vertical magnetic contact are applied to vacuum interrupter；Wherein, horizontal magnetic contact mainly uses contact fluting control electricity
Flow path to produce transverse magnetic field, it can drive electric arc contact surface move, and then mitigate contact ablation, it is little open away from
It is higher with connecting-disconnecting function in the case of the long arc time；Vertical magnetic contact mainly uses specific structure of contact terminal or additional coil in pole
Between produce longitudinal magnetic field, it can effectively suppress the collection coalescence of vacuum arc under high current to reduce the droplets that cause of electric arc, rise
To the effect of protection contact and radome, be conducive to improving the Breaking capacity of arc-chutes and guarantee that many successes cut-off.
The content of the invention：
It is an object of the invention to provide the lower transverse magnetic field of a kind of simple structure, cost is combined vacuum with longitudinal magnetic field
Arc extinguishing chamber contact, it can combine the effect of transverse magnetic field and longitudinal magnetic field, make the control arc ability of vacuum interrupter higher.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that and is achieved：
Cup-shaped transverse magnetic field is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, including a pair of conductive bar, a pair of contact cups and
A pair of contact blades；Wherein, the rim of a cup of two contact cups is oppositely arranged, and one end of a conducting rod is connected to a contact blade
The cup bottom of correspondence contact cup and rim of a cup.
The present invention is further improved by：Open the groove of some spiral distributions, and two in the cup bottom of each contact cup
The hand of spiral of contact cup cup bottom fluting is contrary；The wall of cup of each contact cup opens some skewed slots so that the electric current on contact cup wall of cup
Density has circumferential component, and the fluting direction of two contact cup wall of cups is identical.
The present invention is further improved by：The groove of spiral distribution is helicla flute, ten thousand word grooves or straight trough.
The present invention is further improved by：The two contact cup cup bottoms fluting hand of spiral is identical and two contact cup wall of cups are slotted
Incline direction is contrary.
The present invention is further improved by：The generally circular in shape or annular of each contact blade.
The present invention is further improved by：Each contact blade is radially provided with fluting.
The present invention is further improved by：Place cored in each contact cup, or place for supporting correspondence to touch
The support of head piece.
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.Vacuum arc-extinguishing chamber contact in the present invention can be same
When produce stronger transverse magnetic field and longitudinal magnetic field, can more effectively regulate and control arc characteristic by adjusting both ratios.
2nd, the vacuum arc-extinguishing chamber contact simple structure in the present invention.Vacuum arc-extinguishing chamber contact in the present invention is only touched by a pair
Head cup just can simultaneously produce stronger transverse magnetic field and longitudinal magnetic field.
Description of the drawings：
Fig. 1 is a kind of overall structure diagram of vacuum arc-extinguishing chamber contact of the invention；
Each symbol is in figure：1st, conducting rod, 2, contact cup, 3, contact blade.
Fig. 2 is the structural representation of contact cup in one example of vacuum arc-extinguishing chamber contact of the present invention.
Wherein：The 201 contact cup cup bottoms to there is helical form to slot, 202 is the contact cup wall of cup for being provided with skewed slot.
Fig. 3 is rightabout screw slotting cup bottom schematic diagram in one example contact cup of vacuum arc-extinguishing chamber contact of the present invention.
Fig. 4 is that one example of vacuum arc-extinguishing chamber contact of the present invention produces transverse magnetic field and longitudinal magnetic field ability with opening away from change
Simulation result.
Two curves Bz and Br are respectively the average longitudinal magnetic fields and average radial magnetic field in arc column in figure.
Specific embodiment：
Below in conjunction with accompanying drawing and example, the present invention is described in further detail.
As shown in Figures 1 to 4, the cup-shaped transverse magnetic field that the present invention is provided is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, is wrapped
Include a pair of conductive bar 1, a pair of contact cups 2 and a pair of contact blades 3.Wherein, conducting rod 1 is connected to corresponding touching with contact blade 3
The cup bottom of head cup 2 and rim of a cup.Specifically, the rim of a cup of a pair of contact cups 2 is staggered relatively, and a pair of contact blades 3 are connected to two
The rim of a cup of contact cup 2, a pair of conductive bar 1 is connected to the cup bottom outside of two contact cups 2 and extends round about.Contact
The groove of spiral distribution is opened at the cup bottom of cup 2, makes it the electric current Spiral distribution for controlling cup bottom, is oblique notched on wall of cup on control wall of cup
Electric current density there is circumferential component；Contact blade 3 is lamellar, can be circular or annular as the starting the arc and arcing load bearing component,
Can also be radially slotted.
It is mutually folded with longitudinal magnetic field that the fluting direction at contact wall of cup and cup bottom determines that two contact cups produce transverse magnetic field
Plus effect, i.e., mutually strengthen or mutually weaken.
For the contact cup bottom and the fluting direction of wall of cup of the description of claim 2 and 3, the vacuum arc-extinguishing chamber contact is in disjunction
During electric current, the longitudinal magnetic field produced by two contact cups, 2 glasss of bottom helical form CURRENT DISTRIBUTION, (arcing area) is mutual between contact blade 3
Superposition strengthens；The transverse magnetic field produced by toroidal current distribution on the wall of cup of two contact cup 2, (arcing area) phase between contact blade 2
Mutually superposition strengthens.
For the contact cup bottom and the fluting direction of wall of cup of claim 4 description, the vacuum arc-extinguishing chamber contact is in disjunction electricity
During stream, by the transverse magnetic field of the helical form CURRENT DISTRIBUTION generation at two contact cups, 2 glasss of bottoms, (arcing area) is mutually folded between contact blade 3
Plus strengthen；The longitudinal magnetic field produced by the CURRENT DISTRIBUTION of ring on the wall of cup of two contact cup 2, (arcing area) phase between contact blade 2
Mutually superposition strengthens.
The supporting construction of iron core or contact blade can be placed in contact cup 2.
By adjusting the parameter such as the helicity of 2 glasss of bottom flutings of contact cup and the gradient of the wall of cup of contact cup 2 fluting, can be with excellent
Change the ratio that contact produces longitudinal magnetic field and transverse magnetic field, to better control over arc shape and motion.
Claims (7)
1. cup-shaped transverse magnetic field is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, it is characterised in that：Including a pair of conductive bar (1),
A pair of contact cups (2) and a pair of contact blades (3)；Wherein, the rim of a cup of two contact cups (2) is oppositely arranged, conducting rod (1)
One end is connected to cup bottom and the rim of a cup of corresponding contact cup (2) with a contact blade (3).
2. cup-shaped transverse magnetic field according to claim 1 is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, it is characterised in that：
Open the groove of some spiral distributions, and the hand of spiral phase of two contact cup (2) cup bottoms fluting in the cup bottom of each contact cup (2)
Instead；The wall of cup of each contact cup (2) opens some skewed slots so that the electric current density on contact cup (2) wall of cup has circumferential component, and
And two contact cup (2) wall of cup fluting direction it is identical.
3. cup-shaped transverse magnetic field according to claim 2 is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, it is characterised in that：
The groove of spiral distribution is helicla flute, ten thousand word grooves or straight trough.
4. cup-shaped transverse magnetic field according to claim 2 is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, it is characterised in that：
The two contact cup cup bottoms fluting hand of spiral is identical and two contact cup wall of cups fluting incline direction is contrary.
5. cup-shaped transverse magnetic field according to claim 1 is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, it is characterised in that：
The generally circular in shape or annular of each contact blade (3).
6. cup-shaped transverse magnetic field according to claim 1 is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, it is characterised in that：
Each contact blade (3) is radially provided with fluting.
7. cup-shaped transverse magnetic field according to claim 1 is combined vacuum arc-extinguishing chamber contact with longitudinal magnetic field, it is characterised in that：
Place cored in each contact cup (2), or place the support for supporting correspondence contact blade (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610901065.2A CN106653466A (en) | 2016-10-17 | 2016-10-17 | Vacuum interrupter contact through combination of cup-shaped transverse magnetic fields and longitudinal magnetic fields |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610901065.2A CN106653466A (en) | 2016-10-17 | 2016-10-17 | Vacuum interrupter contact through combination of cup-shaped transverse magnetic fields and longitudinal magnetic fields |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106653466A true CN106653466A (en) | 2017-05-10 |
Family
ID=58856088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610901065.2A Pending CN106653466A (en) | 2016-10-17 | 2016-10-17 | Vacuum interrupter contact through combination of cup-shaped transverse magnetic fields and longitudinal magnetic fields |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106653466A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108198728A (en) * | 2018-02-07 | 2018-06-22 | 西安交通大学 | A kind of contacts of vacuum switch structure |
| CN108364821A (en) * | 2018-02-07 | 2018-08-03 | 西安交通大学 | A kind of novel transverse magnetic field contact for vacuum switch structure |
| CN108389753A (en) * | 2018-02-07 | 2018-08-10 | 西安交通大学 | A kind of novel cup-shaped vacuum arc-extinguishing chamber contact |
| CN112420444A (en) * | 2020-12-09 | 2021-02-26 | 西安交通大学 | Longitudinal magnetic field vacuum arc-extinguishing chamber contact |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553002A (en) * | 1983-12-05 | 1985-11-12 | Westinghouse Electric Corp. | Axial magnetic field vacuum-type circuit interrupter |
| US5099093A (en) * | 1990-02-01 | 1992-03-24 | Sachsenwerk Aktiengesellschaft | Vacuum switching chamber |
| DE10201097A1 (en) * | 2002-01-09 | 2003-07-24 | Siemens Ag | Contact carrier for vacuum switch contact device has hollow cylindrical coil section with inclined slits for generation of magnetic field for preventing arcing |
| JP2012022879A (en) * | 2010-07-14 | 2012-02-02 | Mitsubishi Electric Corp | Vacuum valve |
| CN105047470A (en) * | 2015-07-07 | 2015-11-11 | 西安交通大学 | Novel composite magnetic field contact structure and vacuum arc extinguishing chamber with application of novel composite magnetic field contact structure |
-
2016
- 2016-10-17 CN CN201610901065.2A patent/CN106653466A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553002A (en) * | 1983-12-05 | 1985-11-12 | Westinghouse Electric Corp. | Axial magnetic field vacuum-type circuit interrupter |
| US5099093A (en) * | 1990-02-01 | 1992-03-24 | Sachsenwerk Aktiengesellschaft | Vacuum switching chamber |
| DE10201097A1 (en) * | 2002-01-09 | 2003-07-24 | Siemens Ag | Contact carrier for vacuum switch contact device has hollow cylindrical coil section with inclined slits for generation of magnetic field for preventing arcing |
| JP2012022879A (en) * | 2010-07-14 | 2012-02-02 | Mitsubishi Electric Corp | Vacuum valve |
| CN105047470A (en) * | 2015-07-07 | 2015-11-11 | 西安交通大学 | Novel composite magnetic field contact structure and vacuum arc extinguishing chamber with application of novel composite magnetic field contact structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108198728A (en) * | 2018-02-07 | 2018-06-22 | 西安交通大学 | A kind of contacts of vacuum switch structure |
| CN108364821A (en) * | 2018-02-07 | 2018-08-03 | 西安交通大学 | A kind of novel transverse magnetic field contact for vacuum switch structure |
| CN108389753A (en) * | 2018-02-07 | 2018-08-10 | 西安交通大学 | A kind of novel cup-shaped vacuum arc-extinguishing chamber contact |
| CN108389753B (en) * | 2018-02-07 | 2020-03-31 | 西安交通大学 | Novel cup-shaped vacuum arc-extinguishing chamber contact |
| CN112420444A (en) * | 2020-12-09 | 2021-02-26 | 西安交通大学 | Longitudinal magnetic field vacuum arc-extinguishing chamber contact |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |