CN104505300A - Transverse magnetic field contact of vacuum arc-extinguishing chamber - Google Patents
Transverse magnetic field contact of vacuum arc-extinguishing chamber Download PDFInfo
- Publication number
- CN104505300A CN104505300A CN201410842430.8A CN201410842430A CN104505300A CN 104505300 A CN104505300 A CN 104505300A CN 201410842430 A CN201410842430 A CN 201410842430A CN 104505300 A CN104505300 A CN 104505300A
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- CN
- China
- Prior art keywords
- contact
- fluting
- contact blade
- magnetic field
- transverse magnetic
- 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.)
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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
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a transverse magnetic field contact of a vacuum arc-extinguishing chamber and belongs to the technical field of electric appliances. The transverse magnetic field contact comprises two electroconductive rods and two contact pieces, a first electroconductive rod is arranged at the center of one end face of a first contact, a second electroconductive rod is arranged at the center of one end face of a second contact, each of the first contact piece and the second contact piece is uniformly provided with a plurality of pairs of open grooves circumferentially, and each pair of the open grooves includes a first open groove with two end faces open and a second open groove with two end faces open and circumferentially open; when the transverse magnetic field contact is in use, the open grooves in the first contact piece and the second contact piece are arranged in mirror symmetry. An open groove structure of the transverse magnetic field contact is characterized in that four pairs of the open grooves are formed, each pair includes the first open groove and the second open groove, and each first open groove and the second open groove in the adjacent pair of the open grooves are matched with each other to enable an electric arc to form two electric arc movement paths respectively suitable for different arcing points in an area one fourth of the contact pieces.
Description
Technical field:
The invention belongs to technical field of electric appliances, relate to for the vacuum interrupter in vacuum circuit-breaker, be specifically related to a kind of vacuum interrupter transverse magnetic field contact.
Background technology:
The Application comparison of vacuum circuit-breaker in electric power system is extensive, and along with the raising gradually of vacuum circuit-breaker performance, and its application relates to widely in system condition gradually.Vacuum interrupter is the critical piece of vacuum circuit-breaker, and the design of contact has material impact in raising vacuum interrupter connecting-disconnecting function.Horizontal magnetic contact mainly applies the transverse magnetic field driving electric arc that contact electric current produces, and electric arc is moved in contact surface, thus reaches the effect improving and avoid contact face Partial ablation and improve circuit breaker drop-out current grade.
Summary of the invention:
The object of the invention is to find the horizontal magnetic contact that structure is simpler, processing more easily, is more conducive to arc motion, and improve the utilance of contact surface during arcing further, provide a kind of arc drive characteristic better vacuum interrupter transverse magnetic field contact.
For achieving the above object, the present invention adopts following technical scheme to be achieved:
A kind of vacuum interrupter transverse magnetic field contact, comprises the first conducting rod, the first contact blade, the second contact blade and the second conducting rod; Wherein,
First conducting rod to be arranged in the first contact blade end face in the heart, second conducting rod to be arranged in the second contact blade end face in the heart, first contact blade and the second contact blade all evenly offer some cross-notchings in circumference, every cross-notching include both ends of the surface opening first fluting and both ends of the surface opening and second of circumferential openings fluting; During use, the some cross-notchings on the first contact blade and the second contact blade are that specular is arranged.
The present invention further improves and is: the first contact blade and the second contact blade all evenly offer four cross-notchings in circumference, and every cross-notching is straight trough.
The present invention further improves and is: the first fluting in every cross-notching and the parallel or setting in a certain angle of the second fluting, and the angle between the first fluting and the second fluting is less than 90 °.
The present invention further improves and is: in every cross-notching, the length of the first fluting is less than the length of the second fluting.
The present invention further improves and is: the starting point of the second fluting is on slotted line and the first contact blade or a certain concentrically ringed point of contact of the second contact blade; The starting point of the first fluting is outer relative to the starting point of the second fluting, and the terminal of the first fluting is on the second fluting reverse extending line of an adjacent cross-notching.
Compared with prior art, the present invention has following advantage:
A kind of vacuum interrupter transverse magnetic field of the present invention contact, during use, the some cross-notchings on the first contact blade and the second contact blade be specular setting.After electric arc produces on the first contact blade and the second contact blade, because the first contact blade and the second contact blade fluting affect the distribution of electric current, electric arc is at transverse magnetic field move under influence.
Further, the present invention has four cross-notchings, and every cross-notching one is long and the other is short by being arranged in parallel the first fluting and the second fluting are formed, and the first fluting is slotted cooperatively interact with second in an adjacent cross-notching, the motor path that two of formation electric arc are possible.The first arc motion path and the second arc motion path can be divided into according to arcing point position difference.First arc motion path and the second arc motion path are spiral passageway, all can cause the driving of electric arc screw.
Further, electric arc has different paths to select in different starting the arc positions, this can be avoided the initial stagnation behavior of electric arc to a certain extent.Therefore, also the first fluting in cross-notching every on the first contact blade and the second contact blade and the second fluting can be set to have certain angle, and the angle of the first fluting and the second fluting is less than 90 °, consider the impact of seamed edge effect, this kind fluting arrange under, the distribution of movement of electric arc can be made evenly.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of a kind of vacuum interrupter transverse magnetic field of the present invention contact;
In figure, each symbol is: 1, the first conducting rod, the 2, first contact blade, the 3, second contact blade, the 4, second conducting rod.
Fig. 2 is the structural representation of the first contact blade or the second contact blade;
In figure, each symbol is: 201, slot, the 202, first fluting, the 203, second fluting.
Fig. 3 is electric arc motion path schematic diagram on scheme one contact blade;
In figure, each symbol is: 301, the first arc motion path, the 302, second arc motion path, 303, starting the arc region, 304, alternate path forming region.
Fig. 4 is electric arc motion path schematic diagram on scheme two contact blade.
Embodiment:
Below in conjunction with drawings and Examples, the present invention is described in further detail.
See Fig. 1 and Fig. 2, a kind of vacuum interrupter transverse magnetic field of the present invention contact, comprises the first conducting rod 1, first contact blade 2, second contact blade 3 and the second conducting rod 4; Wherein, first conducting rod 1 to be arranged in the first contact blade 2 one end faces in the heart, second conducting rod 4 to be arranged in the second contact blade 3 one end faces in the heart, first contact blade 2 and the second contact blade 3 all evenly offer some cross-notchings 201 in circumference, every cross-notching 201 include both ends of the surface opening first fluting 202 and both ends of the surface opening and second of circumferential openings fluting 203; During use, the some cross-notchings 201 on the first contact blade 2 and the second contact blade 3 are arranged in specular.
See Fig. 2 and 4, further, the first contact blade 2 and the second contact blade 3 all evenly offer four cross-notchings 201 in circumference, and every cross-notching 201 is straight trough.In addition, the first fluting 202 in every cross-notching 201 and the second fluting 203 parallel or settings in a certain angle, and the angle between the first fluting 202 and the second fluting 203 is less than 90 °.And the length of the first fluting 202 is less than the length of the second fluting 203 in every cross-notching 201.
Again further, the starting point of the second fluting 203 is on slotted line and the first contact blade 2 or a certain concentrically ringed point of contact of the second contact blade 3; The starting point of the first fluting 202 is outer relative to the starting point of the second fluting 203, and the terminal of the first fluting 202 is on the second fluting 203 reverse extending lines of an adjacent cross-notching 201.In addition, notching construction of the present invention also has other to be out of shape, and as fluting shape, slots to number change, included angle change, slotting length change also in category of the present invention.
As shown in Figure 3, the first arc motion path 301 and the second arc motion path 302 represent electric arc motor path possible under different starting the arc situation to vacuum interrupter transverse magnetic field contact of the present invention, and starting the arc region 303 represents starting the arc region.Analyze known, when arcing point be positioned at starting the arc region comparatively left side time, electric arc trends towards the first arc motion path 301, and when arcing point is positioned on the right side of starting the arc region, electric arc trends towards the second arc motion path 302.When electric arc trends towards the first arc motion path 301, electric arc under the effect of transverse magnetic field via rotational path outside regional movement to contact between the short groove of a cross-notching and elongated slot.When electric arc trends towards the second arc motion path 302, electric arc forms alternate path forming region 304 via the second arc motion path 302 and directly enters rotational path outside contact under the effect of transverse magnetic field.The moving line possible to initial electric arc is analyzed known, and the first arc motion path 301 and the second arc motion path 302 reduce the probability of the initial stagnation of electric arc, thus alleviate the initial stagnation problem of contact.In addition, although fluting number increases, because slotting length is all shorter, so the mechanical strength of contact is higher.
Claims (5)
1. a vacuum interrupter transverse magnetic field contact, is characterized in that: comprise the first conducting rod (1), the first contact blade (2), the second contact blade (3) and the second conducting rod (4); Wherein,
First conducting rod (1) to be arranged in the first contact blade (2) end faces in the heart, second conducting rod (4) to be arranged in the second contact blade (3) end faces in the heart, first contact blade (2) and the second contact blade (3) all evenly offer some cross-notchings (201) in circumference, every cross-notching (201) include both ends of the surface opening first fluting (202) and both ends of the surface opening and second of circumferential openings fluting (203); During use, the some cross-notchings (201) on the first contact blade (2) and the second contact blade (3) are arranged in specular.
2. a kind of vacuum interrupter transverse magnetic field contact according to claim 1, it is characterized in that: the first contact blade (2) and the second contact blade (3) all evenly offer four cross-notchings (201) in circumference, and every cross-notching (201) is straight trough.
3. a kind of vacuum interrupter transverse magnetic field contact according to claim 1 and 2, it is characterized in that: the first fluting (202) in every cross-notching (201) and the second fluting (203) is parallel or setting in a certain angle, and the first fluting (202) and the second angle of slotting between (203) are less than 90 °.
4. a kind of vacuum interrupter transverse magnetic field contact according to claim 1 and 2, is characterized in that: in every cross-notching (201), the length of the first fluting (202) is less than the length of the second fluting (203).
5. a kind of vacuum interrupter transverse magnetic field contact according to claim 1 and 2, is characterized in that: the starting point of the second fluting (203) is on slotted line and the first contact blade (2) or a certain concentrically ringed point of contact of the second contact blade (3); The starting point of the first fluting (202) is outer relative to the starting point of the second fluting (203), and the terminal of the first fluting (202) is on second fluting (203) reverse extending line of an adjacent cross-notching (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410842430.8A CN104505300B (en) | 2014-12-29 | 2014-12-29 | A kind of vacuum interrupter transverse magnetic field contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410842430.8A CN104505300B (en) | 2014-12-29 | 2014-12-29 | A kind of vacuum interrupter transverse magnetic field contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104505300A true CN104505300A (en) | 2015-04-08 |
| CN104505300B CN104505300B (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410842430.8A Expired - Fee Related CN104505300B (en) | 2014-12-29 | 2014-12-29 | A kind of vacuum interrupter transverse magnetic field contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104505300B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5444201A (en) * | 1993-11-22 | 1995-08-22 | Eaton Corporation | Multiple electrode structure for a vacuum interrupter |
| CN1349236A (en) * | 2000-10-16 | 2002-05-15 | Lg产电株式会社 | Vacuum breaker used for vacuum switch |
| CN2751426Y (en) * | 2004-12-02 | 2006-01-11 | 西安交通大学 | Cup-type axial magnetic vacuum arc extinguish chamber contact with iron core |
-
2014
- 2014-12-29 CN CN201410842430.8A patent/CN104505300B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5444201A (en) * | 1993-11-22 | 1995-08-22 | Eaton Corporation | Multiple electrode structure for a vacuum interrupter |
| CN1349236A (en) * | 2000-10-16 | 2002-05-15 | Lg产电株式会社 | Vacuum breaker used for vacuum switch |
| CN2751426Y (en) * | 2004-12-02 | 2006-01-11 | 西安交通大学 | Cup-type axial magnetic vacuum arc extinguish chamber contact with iron core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104505300B (en) | 2016-03-30 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160330 Termination date: 20191229 |