CN2751425Y - Bipolar contact for vacuum arc extinguish chamber - Google Patents
Bipolar contact for vacuum arc extinguish chamber Download PDFInfo
- Publication number
- CN2751425Y CN2751425Y CN 200420086277 CN200420086277U CN2751425Y CN 2751425 Y CN2751425 Y CN 2751425Y CN 200420086277 CN200420086277 CN 200420086277 CN 200420086277 U CN200420086277 U CN 200420086277U CN 2751425 Y CN2751425 Y CN 2751425Y
- Authority
- CN
- China
- Prior art keywords
- contact blade
- coil
- contact
- conduction holder
- connecting lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- H01H33/6644—Contacts; Arc-extinguishing means, e.g. arcing rings having coil-like electrical connections between contact rod and the proper contact
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses a bipolar contact for a vacuum arc extinguishing chamber, which can be used in a vacuum switch of an electric appliance switch. The utility model comprises a first conductive rod, a first conductive bracket, a first coil and crank arm, a first contact blade, a second contact blade, a second coil and crank arm, a second conductive bracket and a second conductive rod, wherein all the components are connected in sequence. The first coil and crank arm and the second coil and crank arm have the same structure, and are installed mutually in 180 degree. By adopting the structure, the contact of the utility model has better current distribution and mechanical strength than the prior crank arm bipolar contact of a vacuum arc extinguishing chamber.
Description
Technical field
The utility model relates to vacuum switch in the appliance switch, particularly a kind of vacuum interrupter two utmost point formula contacts.
Background technology
The utility model is further to improve on the basis of patent of invention 97108693.1 bent-arm two-stage longitudinal magnetic-field electrode for vacuum blowout chamber.Conducting rod is directly to link to each other with connecting lever in this patent of invention, causes 2 rough sledding thus: 1. herein current density is big by big rated current the time, is unfavorable for the raising of rated current; 2. mechanical strength herein is low, is not suitable for the switch application of strong collision at a high speed.Therefore the utility model has been done further improvement to this 2 aspect on this basis.The electric current distribution of the contact after the improvement more becomes rationally, and the mechanical strength raising, is more suitable for using in middle pressure and high pressure field.
Summary of the invention
The purpose of this utility model is intended to propose a kind of vacuum interrupter two utmost point formula contacts, makes it more reasonable than the electric current distribution of patent of invention 97108693.1 bent-arm two-stage longitudinal magnetic-field electrode for vacuum blowout chamber, and mechanical strength improves.
The technical solution that realizes above-mentioned purpose is, a kind of vacuum interrupter two utmost point formula contacts, it is characterized in that, comprise first conducting rod, the first conduction holder, first coil and connecting lever, first contact blade and second contact blade, second coil and the connecting lever, the second conduction holder and second conducting rod that connect successively, wherein first coil and connecting lever and second coil and connecting lever are same structure, and are 180 degree placements mutually.
Some other characteristics of the present utility model are that the described first conduction holder and the second conduction holder have rotational symmetry.
Described first contact blade and second contact blade adopt CuCr contact material or other contact material.
Described first conducting rod and second conducting rod, the first conduction holder and the second conduction holder, first contact blade and second contact blade are same structure.
Between the described first conduction holder and first contact blade, and the mechanical support that also includes stainless steel or other material composition between the second conduction holder and second contact blade.
On described first conducting rod, the first conduction holder, first coil and connecting lever, first contact blade and second contact blade, second coil and connecting lever, the second conduction holder and second conducting rod corresponding welding spots is arranged, produce and the consistent longitudinal magnetic field of electric arc arc column axis direction in the contact gap when this solder joint is used for the guide current circulation.
Because the utility model has increased the conduction holder in original structure, the conduction holder is connected with conducting rod on the one hand, is connected with coil and connecting lever on the other hand, and distribution of current density more is tending towards even under this connected mode, and under the support of conduction holder, the mechanical strength of whole contact is higher.
Description of drawings
Fig. 1 is vacuum interrupter two utmost point formula contact figure; Each symbol is among the figure: 1, first conducting rod, 2, the first conduction holder, 3, first coil and the connecting lever, 4, first contact blade, 5, second contact blade, 6, second coil and the connecting lever, 7, the second conduction holder, 8, second conducting rod.
Specific embodiment
The present invention is described in further detail below in conjunction with vacuum interrupter two utmost point formula contact embodiment that accompanying drawing and inventor provide.
As shown in Figure 1, vacuum interrupter two utmost point formula contacts are at least by first conducting rod, 1, the first conduction holder 2, the first coils and connecting lever 3, the first contact blade 4, the second contact blades, 5, the second coils and connecting lever 6, the second conduction holders 7 and second conducting rod 8 compositions.Wherein first coil and connecting lever 3 and second coil and connecting lever 6 mutual angles are 180 degree.Electric current can again through first coil and connecting lever 3, arrive first contact blade 4 via 1 to the first conduction holder 2 of first conducting rod, again to second contact blade 5, through second coil and connecting lever 6 to second conduction holders 7, is flowed out by second conducting rod 8 at last.Current direction also can be opposite with above-mentioned direction.When vacuum arc-extinguishing chamber contact flows through electric current and separately produces vacuum arc, between first contact blade 4 and second contact blade 5, produce very strong longitudinal magnetic field, and this magnetic field is opposite in the direction on connecting lever both sides, i.e. two pole fields like this.The form of this longitudinal magnetic field may command vacuum arc still remains on disperse state under big current conditions, thereby has improved the reliability of vacuum interrupter work.And the eddy current direction that this magnetic field is produced on first contact blade 4 and second contact blade 5 is opposite, can offset mutually, therefore has the advantage that contact blade is not slotted.
Visible conduction holder has rotational symmetry in accompanying drawing 1, and the conduction holder is connected with conducting rod on the one hand, is connected with coil and connecting lever on the other hand, and distribution of current density more is tending towards even under this connected mode.And under the support of conduction holder, the mechanical strength of whole contact is higher.
First conducting rod 1 and second conducting rod 8, the first conduction holder, 2 and second conduction holder 7, first contact blade 4 and second contact blade 5 are same structure.
Between in the present embodiment first conduction holder 2 and first contact blade 4, and also include the mechanical support that stainless steel constitutes between the second conduction holder, 7 and second contact blade 5, also can adopt other material to form mechanical support.
On first conducting rod 1, first conduction holder 2, first coil and connecting lever 3, first contact blade 4 and second contact blade 5, second coil and connecting lever 6, the second conduction holder, 7 and second conducting rod 8 corresponding welding spots is arranged, produce and the consistent longitudinal magnetic field of electric arc arc column axis direction in the contact gap when this solder joint is used for the guide current circulation.
The utility model is analyzed the structure of above embodiment: first contact blade 4 and second contact blade, 5 diameters are got 100mm, contact material is got CuCr50, if the average opening velocity of vacuum circuit-breaker is 3m/s, establishing the arcing time is 10ms, and this moment, vacuum arc-extinguishing chamber contact was opened apart from being 30mm.If this moment, electric current was the 40kA effective value.Finite element analysis has been carried out in three-dimensional eddy current magnetic field in the case, and the result shows that the longitudinal magnetic field maximum is 510mT on the single-turn type contact center plane, and the strength of longitudinal magnetic field lag time only is 0.46ms.
Claims (6)
1. vacuum interrupter two utmost point formula contacts, it is characterized in that, comprise first conducting rod (1), the first conduction holder (2), first coil and connecting lever (3), first contact blade (4) and second contact blade (5), second coil and the connecting lever (6), second conduction holder (7) and second conducting rod (8) that connect successively, wherein first coil and connecting lever (3) and second coil and connecting lever (6) are same structure, and are 180 degree placements mutually.
2. vacuum interrupter two utmost point formula contacts as claimed in claim 1 is characterized in that, the described first conduction holder (2) and the second conduction holder (7) have rotational symmetry.
3. vacuum interrupter two utmost point formula contacts as claimed in claim 1 is characterized in that, described first contact blade (4) and second contact blade (5) adopt CuCr contact material or other contact material.
4. vacuum interrupter two utmost point formula contacts as claimed in claim 1, it is characterized in that described first conducting rod (1) and second conducting rod (8), the first conduction holder (2) and the second conduction holder (7), first contact blade (4) and second contact blade (5) are same structure.
5. vacuum interrupter two utmost point formula contacts as claimed in claim 1, it is characterized in that, between described first conduction holder (2) and first contact blade (4), and the mechanical support that also includes stainless steel or other material composition between the second conduction holder (7) and second contact blade (5).
6. as claim 1,2,3, one of 4 described vacuum interrupter two utmost point formula contacts, it is characterized in that, on described first conducting rod (1), the first conduction holder (2), first coil and connecting lever (3), first contact blade (4) and second contact blade (5), second coil and connecting lever (6), the second conduction holder (7) and second conducting rod (8) corresponding welding spots is arranged, produce and the consistent longitudinal magnetic field of electric arc arc column axis direction in the contact gap when this solder joint is used for the guide current circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420086277 CN2751425Y (en) | 2004-11-29 | 2004-11-29 | Bipolar contact for vacuum arc extinguish chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420086277 CN2751425Y (en) | 2004-11-29 | 2004-11-29 | Bipolar contact for vacuum arc extinguish chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2751425Y true CN2751425Y (en) | 2006-01-11 |
Family
ID=35932597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420086277 Expired - Fee Related CN2751425Y (en) | 2004-11-29 | 2004-11-29 | Bipolar contact for vacuum arc extinguish chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2751425Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465234B (en) * | 2009-01-12 | 2011-08-03 | 上海华通开关厂有限公司 | Device for transmitting current of isolation switch switching bus bar |
| CN107123566A (en) * | 2017-06-05 | 2017-09-01 | 西安交通大学 | A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter |
| 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 |
-
2004
- 2004-11-29 CN CN 200420086277 patent/CN2751425Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465234B (en) * | 2009-01-12 | 2011-08-03 | 上海华通开关厂有限公司 | Device for transmitting current of isolation switch switching bus bar |
| CN107123566A (en) * | 2017-06-05 | 2017-09-01 | 西安交通大学 | A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter |
| CN107123566B (en) * | 2017-06-05 | 2019-08-23 | 西安交通大学 | A kind of ambipolar compound longitudinal field contact structure of vacuum interrupter |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |