CN104701066A - Magnetorheological fluid-type longitudinal-magnetic vacuum arc extinguishing chamber contact system - Google Patents
Magnetorheological fluid-type longitudinal-magnetic vacuum arc extinguishing chamber contact system Download PDFInfo
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- CN104701066A CN104701066A CN201310641361.XA CN201310641361A CN104701066A CN 104701066 A CN104701066 A CN 104701066A CN 201310641361 A CN201310641361 A CN 201310641361A CN 104701066 A CN104701066 A CN 104701066A
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- Prior art keywords
- moving
- contact
- magnetic
- conductive rod
- static
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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
The invention discloses a magnetorheological fluid-type longitudinal-magnetic vacuum arc extinguishing chamber contact system, which comprises a static conductive rod, a static coil, a static contact cup, magnetorheological fluid, a static contact sheet, a moving contact sheet, a moving coil, a moving contact cup and a moving conductive rod, and is characterized in that the static coil (2) and the moving coil (7) are embedded in the moving contact cup and the static contact cup; the static coil (2) and the moving coil (7) are electrically connected with the static conductive rod (1) and the moving conductive rod (10) respectively; current flows through the static conductive rod (1), the static coil (2), the static contact sheet (5), the moving contact sheet (6), the moving coil (7), and the moving conductive rod (10); a longitudinal magnetic field is formed at the gap of the contacts; and the static contact cup and the moving contact cup are also loaded with the magnetorheological fluid. Through embedding the coils in the contact cups, the purpose of generation of the longitudinal magnetic field is achieved; and by using the high permeability of the magnetorheological fluid in the static contact cup and the moving contact cup, the strength of the longitudinal magnetic field generated between the contacts of the coils can be enhanced.
Description
Technical field
The present invention relates to a kind of vacuum arc-extinguishing chamber contact, particularly relate to a kind of magnetic flow liquid formula and indulge magnetic vacuum arc control device contact system, belong to technical field of electrical equipment.
Background technology
In electric power system, high voltage switchgear plays control and protective effect.Primary cut-out is important electrical the most, is mainly used in closing, cut-offfing circuit.Along with the lifting of people's environmental protection consciousness, environmentally friendly electric equipment more and more receives the concern of people, vacuum circuit-breaker as the leading products of Medium voltage switch or circuit breaker, continuous superhigh pressure future development, and putting into operation in indivedual high voltage power transmisson system.
Vacuum interrupter is vacuum circuit-breaker " heart ", and in it, structure of contact terminal has controlled most important effect to vacuum arc.Vacuum arc-extinguishing chamber contact structure is roughly divided into two kinds: horizontal magnetic contact and vertical magnetic contact.For horizontal magnetic contact, gather electric arc under the effect of transverse magnetic field along contact surface rapid circular movement; For vertical magnetic contact, can there is many cathode protection electric arc in vacuum arc under longitudinal magnetic field effect, still can maintain disperse state when big current.Horizontal magnetic contact abrasion is large, and connecting-disconnecting function is low, and therefore vertical magnetic contact is most widely used.
Current vertical magnetic contact many employings cup-shaped indulges magnetic structure of contact terminal and coil type indulges magnetic structure of contact terminal, wherein, Axial Magnetic Field Vacuum Interrupters with Cup Type contact wall of cup has skewed slot, and coil type is indulged magnetic vacuum arc control device contact conducting rod and connected with coiled contact by spoke connecting lever, and the two mechanical strength weakens.Therefore adopt complete wall of cup, improve structure of contact terminal mechanical strength, so to improve point, closing speed, vacuum interrupter is successfully cut-off, closedly to have a positive effect.
Summary of the invention
Object of the present invention is just to solve prior art Problems existing, for the defect that existing vacuum arc-extinguishing chamber contact structure exists, a kind of magnetic flow liquid formula rational in infrastructure, compact, that longitudinal magnetic field intensity is large, mechanical strength is high is provided to indulge magnetic vacuum arc control device contact system.
For solving the problems of the technologies described above, the present invention realizes like this.
This magnetic flow liquid formula indulges magnetic vacuum arc control device contact system, comprise static conductive rod, dead line circle, fixed contact cup, magnetic flow liquid, fixed contact sheet, moving contact sheet, moving winding, moving contact cup and moving conductive rod, be characterized in dynamic, fixed contact cup is embedded with dead line circle (2), moving winding (7), dead line circle (2), moving winding (7) respectively with static conductive rod (1), moving conductive rod (10) electrically connects, electric current flows through static conductive rod (1), dead line circle (2), fixed contact sheet (5), moving contact sheet (6), moving winding (7), moving conductive rod (10), a longitudinal magnetic field is formed in contact gap, dynamic, intellectual material-the magnetic flow liquid of function admirable is also housed in fixed contact cup.
The longitudinal magnetic field direction that dynamic and static coil direction of circling makes the two produce between contact is consistent, and its coil circulating current produces magnetic field and meets right-hand screw rule.
In addition, dynamic and static contact cup built with intellectual material--magnetic flow liquid be the suspended substance mixed by high magnetic permeability, low hysteresis small soft magnetic particles and non-magnetic liquid, can purchase from the market.This suspended substance presents low viscous Newtonian fluid characteristic under zero magnetic field condition; And under strong magnetic field action, then present the Binghan bulk properties of high viscosity, lazy flow.Magnetic flow liquid has high stability in quite wide temperature range.Here the high magnetic permeability of magnetic flow liquid is utilized, the longitudinal magnetic field intensity that intensifier coil produces between contact.Meanwhile, contact closure, normally, when not having strong magnetic field action, can utilize magnetic flow liquid to reduce coil and contact temperature rise.
Again, when the height of electric pressure, dynamic and static coil wire diameter and the number of turn can be increased, successfully cut-off necessary requirement to meet.
Compared with prior art, the invention has the beneficial effects as follows.
The present invention is by reaching at the embedded coil of contact cup the object producing longitudinal magnetic field between contact, remain the integrality of contact wall, enhance structure of contact terminal mechanical strength, thus contact is carried out point, can initial velocity be promoted when closing a floodgate, circuit breaker is successfully cut-off, closedly play positive role.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1 is front view of the present invention.
Fig. 2 is dynamic and static structure of contact terminal schematic diagram of the present invention.
Fig. 3 is dynamic and static loop construction schematic diagram of the present invention.
In figure: 1, static conductive rod; 2, dead line circle; 3, fixed contact cup; 4, magnetic flow liquid; 5, fixed contact sheet; 6, moving contact sheet; 7, moving winding; 8, moving contact cup; 9, magnetic flow liquid; 10, moving conductive rod.
Embodiment
As shown in the figure, magnetic flow liquid formula is indulged magnetic vacuum arc control device contact system and is comprised static conductive rod (1), dead line circle (2), fixed contact cup (3), magnetic flow liquid (4), (9), fixed contact sheet (5), moving contact sheet (6), moving winding (7), moving contact cup (8) and moving conductive rod (10); Dynamic and static contact cup is embedded with a pair coil, and the intellectual material of function admirable is housed---magnetic flow liquid.
With reference to Fig. 1, static conductive rod (1) electrically connects with fixed contact cup (3) and fixed contact sheet (5), and in like manner, moving conductive rod (10) electrically connects with moving contact cup (8) and moving contact sheet (6).Static conductive rod (1), fixed contact cup (3), fixed contact sheet (5), moving contact sheet (6), moving contact cup (8), moving conductive rod (10) form current flow path when producing electric arc between contact together with electric arc.
With reference to Fig. 2, moving winding (7), dead line circle (2) connect with moving contact cup (8), fixed contact cup (3) and moving contact sheet (6), fixed contact sheet (5) respectively, form the current flow path producing longitudinal magnetic field.Dead line circle outer surface, with insulating varnish, realizes the insulation between coil and coil.Dynamic and static contact cup is built with magnetic flow liquid (9), (4), and magnetic flow liquid is the suspended substance mixed by high magnetic permeability, low hysteresis small soft magnetic particles and non-magnetic liquid, can purchase from the market.Here the high magnetic permeability of magnetic flow liquid is utilized, the longitudinal magnetic field intensity that intensifier coil produces between contact.Meanwhile, contact closure, normally, when not having strong magnetic field action, can utilize magnetic flow liquid to reduce coil and contact temperature rise.
With reference to Fig. 3, the longitudinal magnetic field direction that dead line circle (2), moving winding (7) coil direction of circling make the two produce between contact is consistent, and its coil circulating current produces magnetic field and meets right-hand screw rule.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. magnetic flow liquid formula indulges magnetic vacuum arc control device contact system, comprise static conductive rod (1), dead line circle (2), fixed contact cup (3), magnetic flow liquid (4), (9), fixed contact sheet (5), moving contact sheet (6), moving winding (7), moving contact cup (8) and moving conductive rod (10), it is characterized in that dynamic, fixed contact cup is embedded with dead line circle (2), moving winding (7), dead line circle (2), moving winding (7) respectively with static conductive rod (1), moving conductive rod (10) electrically connects, electric current flows through static conductive rod (1), dead line circle (2), fixed contact sheet (5), moving contact sheet (6), moving winding (7), moving conductive rod (10), a longitudinal magnetic field is formed in contact gap, dynamic, in fixed contact cup
Also magnetic flow liquid is housed.
2. magnetic flow liquid formula according to claim 1 indulges magnetic vacuum arc control device contact system, it is characterized in that: embedded dead line circle (2), moving winding (7) adopt the copper product that conductance is high.
3. magnetic flow liquid formula according to claim 1 indulges magnetic vacuum arc control device contact system, it is characterized in that: in contact cup fill magnetic flow liquid (4), the volume of (9) mostly is 2/3 of contact cup volume most.
4. magnetic flow liquid formula according to claim 1 indulges magnetic vacuum arc control device contact system, it is characterized in that: the longitudinal magnetic field direction that described dead line circle (2), moving winding (7) coil direction of circling make the two produce between contact is consistent, its coil circulating current produces magnetic field and meets right-hand screw rule.
5. magnetic flow liquid formula according to claim 1 indulges magnetic vacuum arc control device contact system, it is characterized in that: along with the raising of electric pressure, increases dead line circle (2), moving winding (7) wire diameter and the number of turn to realize successfully cut-offfing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641361.XA CN104701066B (en) | 2013-12-04 | 2013-12-04 | Magnetorheological fluid-type longitudinal-magnetic vacuum arc extinguishing chamber contact system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641361.XA CN104701066B (en) | 2013-12-04 | 2013-12-04 | Magnetorheological fluid-type longitudinal-magnetic vacuum arc extinguishing chamber contact system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104701066A true CN104701066A (en) | 2015-06-10 |
| CN104701066B CN104701066B (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310641361.XA Active CN104701066B (en) | 2013-12-04 | 2013-12-04 | Magnetorheological fluid-type longitudinal-magnetic vacuum arc extinguishing chamber contact system |
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| Country | Link |
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| CN (1) | CN104701066B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108735548A (en) * | 2018-05-02 | 2018-11-02 | 三峡大学 | A kind of rotary impulse-current-proof switching device based on magnetic rheology effect |
| CN110085929A (en) * | 2019-05-09 | 2019-08-02 | 黄淮学院 | A kind of new energy battery temperature adjustment and protective device |
| CN114420499A (en) * | 2022-01-20 | 2022-04-29 | 西安理工大学 | Vacuum switch contact structure comprising a heat absorption module |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5387771A (en) * | 1993-04-08 | 1995-02-07 | Joslyn Hi-Voltage Corporation | Axial magnetic field high voltage vacuum interrupter |
| DE19714653A1 (en) * | 1997-04-09 | 1998-10-15 | Abb Patent Gmbh | Contact structure for vacuum switching chamber |
| CN102592881B (en) * | 2011-12-09 | 2015-07-15 | 沈阳工业大学 | Disc type laminated gyromagnetic transversely-blowing vacuum arc extinguishing chamber |
| CN102496518B (en) * | 2011-12-09 | 2015-04-15 | 沈阳工业大学 | Disk-type gyromagnetic vacuum arc extinguish chamber |
-
2013
- 2013-12-04 CN CN201310641361.XA patent/CN104701066B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108735548A (en) * | 2018-05-02 | 2018-11-02 | 三峡大学 | A kind of rotary impulse-current-proof switching device based on magnetic rheology effect |
| CN110085929A (en) * | 2019-05-09 | 2019-08-02 | 黄淮学院 | A kind of new energy battery temperature adjustment and protective device |
| CN114420499A (en) * | 2022-01-20 | 2022-04-29 | 西安理工大学 | Vacuum switch contact structure comprising a heat absorption module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104701066B (en) | 2017-03-22 |
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