CN106531542B - A kind of vacuum interrupter with composite barrier structure - Google Patents
A kind of vacuum interrupter with composite barrier structure Download PDFInfo
- Publication number
- CN106531542B CN106531542B CN201611169508.XA CN201611169508A CN106531542B CN 106531542 B CN106531542 B CN 106531542B CN 201611169508 A CN201611169508 A CN 201611169508A CN 106531542 B CN106531542 B CN 106531542B
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- CN
- China
- Prior art keywords
- barrier structure
- composite barrier
- vacuum interrupter
- circular arc
- epoxy resin
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Classifications
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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
-
- 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
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
-
- 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
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
- H01H2033/66292—Details relating to the use of multiple screens in vacuum switches
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
A kind of vacuum interrupter with composite barrier structure of the present invention, lending analysis is strong, is conducive to radiate, and epoxy resin materials are few, economic and environment-friendly.It includes vacuum interrupter ontology and composite barrier structure；Vacuum interrupter ontology includes the porcelain shell of upper and lower end opening, is sealingly disposed in the cover board of porcelain shell upper and lower ends by metal sealing face respectively, and the moving contact of setting is slidingly sealed across the static contact of end casing fixing seal setting and across another end casing；Composite barrier structure includes metallic shield and epoxy resin dielectric made of one casting；The disc-shaped setting of metallic shield, outer rim are extended along axial direction to one end；Epoxy resin dielectric coats all outer rims and extends to a part of plate-like bottom；Composite barrier structure is co-axially located at the outside of porcelain shell or more end casing respectively, and the outer edge that two composite barrier structures extend is oppositely arranged；Metallic shield peripheral end portion in each composite barrier structure is arranged beyond the metal sealing face of respective side.
Description
Technical field
The present invention relates to Cubicle Gas-Insulated Switchgear, specially a kind of vacuum with composite barrier structure is gone out
Arc chamber.
Background technique
Currently, it is logical for sealing between the porcelain shell and upper and lower cover plates of vacuum interrupter in the manufacturing process of vacuum interrupter
What the thin metal layer and the welding of cover board end face for crossing porcelain shell end coated were realized.In the gas isolated environment such as gas, dry air
Under, if directly using vacuum interrupter, will appear near the metal sealing face between vacuum arc-extinction porcelain shell and upper and lower cover plates
Electric field concentration phenomenon can be than more serious.In addition, upper and lower cover plates is as exposed metal electrode, the small portion of structure mean curvature radius
Position also will appear electric field concentration phenomenon.These occur in which can all lead to shelf depreciation, therefore long-term running switchgear can go out
Now insulate unreliable problem.For these electric field values of decaying, in the prior art, relatively mostly uses and vacuum interrupter entirety sealing exists
Technology in epoxy resin is realized.For the structure although enhancing the lending analysis of vacuum interrupter, it is with higher
Premised on sealing technology, the production cycle of vacuum interrupter is not only increased, further increases the production cost of vacuum interrupter.Separately
Outside, there is also cracking hidden danger for epoxy resin of the sealing outside vacuum extinction room, this will be unfavorable for metal closed switch cabinet and exempt to tie up
Realize to shield performance；Meanwhile it if being dissipated with being unfavorable for vacuum interrupter by the complete sealing of vacuum interrupter in epoxy resin
Heat.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of vacuum interrupter with composite barrier structure,
The lending analysis of arc-chutes is strong, is conducive to radiate, and epoxy resin materials are few, improves environmental protection and economic performance.
The present invention is to be achieved through the following technical solutions:
A kind of vacuum interrupter with composite barrier structure, including vacuum interrupter ontology and composite barrier structure；Institute
The vacuum interrupter ontology stated includes the porcelain shell of upper and lower end opening, is sealingly disposed in porcelain shell or more two by metal sealing face respectively
The cover board at end, and the dynamic of setting is slidingly sealed across the static contact of end casing fixing seal setting and across another end casing
Contact；The composite barrier structure includes metallic shield and epoxy resin dielectric made of one casting；Metallic shield
Disc-shaped setting is covered, outer rim is extended along axial direction to one end；Epoxy resin dielectric coats all outer rims and extends to plate-like
A part of bottom；The composite barrier structure is co-axially located at the outside of porcelain shell or more end casing, two combined screens respectively
The outer edge that shield structure extends is oppositely arranged；Metallic shield peripheral end portion in each composite barrier structure is beyond respective side
The setting of metal sealing face.
Preferably, the composite barrier structure internal diameter is greater than the outer diameter of porcelain shell.
Preferably, the vacuum interrupter ontology further includes the inner shield cylinder being arranged in inside porcelain shell；Metallic shield
The distance between outer edge and inner shield cylinder are not less than minimum insulation distance.
Preferably, the segment thickness that metallic shield is coated by epoxy resin dielectric is less than uncoated part；Metal screen
The a part for covering cover plate-like bottom is identical as the thickness of uncoated part by the thickness after epoxy resin dielectric cladding.
Preferably, the part of epoxy resin dielectric cladding metallic shield outer rim, the right angle of the rounded transition in inside is set
It sets, outside successively the first circular arc portion of drop-over, the second circular arc portion and third circular arc portion.
Further, outside the epoxy resin dielectric of the starting point of the first circular arc portion and metallic shield plate-like bottom cladding
Side is connected smoothly, and the starting point of the clearing end of the first circular arc portion and the second circular arc portion is by the public affairs that are obliquely installed outward
Tangent line is connected smoothly, the third circular arc portion of the smoothed transition connection of the clearing end of the second circular arc portion and the right angle of inside
While being connected smoothly；From the clearing end of the first circular arc portion to the starting point of the second circular arc portion, epoxy resin dielectric packet
The segment outer radius for covering metallic shield outer rim is gradually increased.
Preferably, the composite barrier structure is co-axially located at the outside of porcelain shell or more end casing, static contact side respectively
Composite barrier structure be fixedly installed by groove on static contact, the composite barrier structure of moving contact side is fixed on moving contact
On support.
Compared with prior art, the invention has the following beneficial technical effects:
What the present invention used is only arranged implementation composite barrier structure in vacuum interrupter upper and lower end parts periphery, utilizes metal screen
Net and the dielectric combination of epoxy resin are covered, realizes insulating effect, specific aim processing, porcelain shell only are carried out to the both ends that electric field is concentrated
It is fully exposed；The phenomenon that vacuum interrupter periphery field distribution can not only be optimized, electric field is avoided to concentrate, enhance arc-chutes
Lending analysis improves the long-term running reliability of switchgear, radiates with also helping vacuum interrupter；And compared with fixed sealing type
Vacuum interrupter epoxy resin materials are few, improve environmental protection and economic performance；In addition, also can be shortened using composite barrier structure true
The design length of empty arc-chutes minimizes with realizing Cubicle Gas-Insulated Switchgear；It is sealed suitable for gas-insulated metal
Close switchgear.
Detailed description of the invention
Fig. 1 is that the present invention implements the vacuum interrupter complete section schematic front view.
Fig. 2 is that the present invention implements the half-sectional schematic front view of composite barrier structure.
In figure: metallic shield 1, epoxy resin dielectric 2, metal sealing face 3, cover board 4, porcelain shell 5, inner shield cylinder 6, recessed
Slot 7, support 8, the first circular arc portion 9, the second circular arc portion 10, third circular arc portion 11.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
A kind of vacuum interrupter with composite barrier structure of the present invention, as shown in Figure 1 comprising vacuum interrupter and set
Set the composite barrier structure implemented in the vacuum interrupter upper and lower end parts periphery；Metallic shield in the composite barrier structure
3 certain size of metal sealing face must be exceeded by covering 1 front end i.e. outer edge；At least over 1mm in this preferred embodiment.
Wherein, composite barrier structure includes metallic shield 1 and epoxy resin dielectric 2, by metallic shield 1 and epoxy
2 integrated casting of resin dielectric forms；The front end of metallic shield 1 coats certain thickness epoxy resin dielectric 2；This is excellent
It selects in example, epoxy resin dielectric 2 exceeds 1 front end of metallic shield at least 10mm.Composite barrier structure internal diameter must be greater than true
The outer diameter of empty arc-chutes porcelain shell 5；In this preferred embodiment, composite barrier structure internal diameter exceeds 5 outer diameter of porcelain shell at least 4mm.Metal screen
Cover 1 front end of cover has enough insulation distances at a distance from vacuum extinction indoor shielding cylinder 6, is not less than minimum insulation distance；
In this preferred embodiment, 1 front end of metallic shield is at least 20mm at a distance from 6 front end of inner shield cylinder.
Composite barrier structure center opening size is consistent with the dynamic and static contact diameter of the vacuum interrupter of cooperation respectively, finally
It is mounted in the groove 7 of contact or is fixed on support 8.Metallic shield 1, metal sealing face 3 and cover board 4 are equipotential body,
Epoxy resin dielectric 2 concentrates the high field intensity in region, optimizes the field distribution of vacuum interrupter periphery, improves vacuum
The reliability of arc-chutes insulation.
As shown in Fig. 2, the epoxy resin dielectric 2 in composite barrier structure has irregular contour, including the first circular arc
Part 9, the second circular arc portion 10 and third circular arc portion 11.Specifically, epoxy resin dielectric 2 coats outside metallic shield 1
The part of edge, the right angle setting of the rounded transition in inside, outside successively drop-over the first circular arc portion 9,10 and of the second circular arc portion
Third circular arc portion 11.The epoxy resin dielectric of the starting point of first circular arc portion 9 and 1 plate-like bottom of metallic shield cladding
2 outsides are connected smoothly, and the starting point of the clearing end of the first circular arc portion 9 and the second circular arc portion 10 is set by tilting outward
The common tangent set is connected smoothly, the third circular arc portion 11 of the clearing end of the second circular arc portion 10 smoothed transition connection with
The right-angle side of inside is connected smoothly；From the clearing end of the first circular arc portion 9 to the starting point of the second circular arc portion 10, epoxy
The segment outer radius that resin dielectric 2 coats 1 outer rim of metallic shield is gradually increased.
A kind of vacuum interrupter with composite barrier structure of the present invention, it is applicable to be gas, dry sky in dielectric
In the metal closed switch cabinet of one or more gases such as gas, carbon dioxide, realizes the miniaturization of switchgear, high reliability and exempt from
Maintenance.
Claims (7)
1. a kind of vacuum interrupter with composite barrier structure, which is characterized in that including vacuum interrupter ontology and combined screen
Shield structure；
The vacuum interrupter ontology includes the porcelain shell (5) of upper and lower end opening, passes through metal sealing face (3) sealed set respectively
In the cover board (4) of porcelain shell (5) upper and lower ends, and passes through the static contact of an end casing (4) fixing seal setting and pass through another
End casing (4) is slidingly sealed the moving contact of setting；
The composite barrier structure includes metallic shield (1) and epoxy resin dielectric (2) made of one casting；Metal
Shielding case (1) disc-shaped setting, outer rim are extended along axial direction to one end；Epoxy resin dielectric (2) coats all outer rims simultaneously
Extend to a part of plate-like bottom；
The composite barrier structure is co-axially located at the outside of porcelain shell (5) end casing (4) up and down, two composite shielding knots respectively
The outer edge that structure extends is oppositely arranged；Metallic shield (1) peripheral end portion in each composite barrier structure is beyond respective side
Metal sealing face (3) setting.
2. a kind of vacuum interrupter with composite barrier structure according to claim 1, which is characterized in that described compound
Shielding construction internal diameter is greater than the outer diameter of porcelain shell (5).
3. a kind of vacuum interrupter with composite barrier structure according to claim 1, which is characterized in that described is true
Empty arc-chutes ontology further includes the setting inner shield cylinder (6) internal in porcelain shell (5)；Metallic shield (1) outer edge and inner shield
The distance between cylinder (6) is not less than minimum insulation distance.
4. a kind of vacuum interrupter with composite barrier structure according to claim 1, which is characterized in that metallic shield
The segment thickness that cover (1) is coated by epoxy resin dielectric (2) is less than uncoated part；Metallic shield (1) plate-like bottom
Thickness after a part is coated by epoxy resin dielectric (2) is identical as the thickness of uncoated part.
5. a kind of vacuum interrupter with composite barrier structure according to claim 1, which is characterized in that epoxy resin
Dielectric (2) coats the part of metallic shield (1) outer rim, the right angle setting of the rounded transition in inside, outside successively drop-over the
One circular arc portion (9), the second circular arc portion (10) and third circular arc portion (11).
6. a kind of vacuum interrupter with composite barrier structure according to claim 5, which is characterized in that the first circular arc
Partially smooth transition connects on the outside of the epoxy resin dielectric (2) of the starting point of (9) and metallic shield (1) plate-like bottom cladding
It connects, the starting point of the clearing end of the first circular arc portion (9) and the second circular arc portion (10) is by the common tangent that is obliquely installed outward
It is connected smoothly, the third circular arc portion (11) of the smoothed transition connection of the clearing end of the second circular arc portion (10) and inside
Right-angle side is connected smoothly；Starting point from the clearing end of the first circular arc portion (9) to the second circular arc portion (10), asphalt mixtures modified by epoxy resin
The segment outer radius of rouge dielectric (2) cladding metallic shield (1) outer rim is gradually increased.
7. a kind of vacuum interrupter with composite barrier structure according to claim 1, which is characterized in that described answers
The outside that shielding construction is co-axially located at porcelain shell (5) end casing (4) up and down respectively is closed, the composite barrier structure of static contact side passes through
Groove (7) fixed setting on static contact, the composite barrier structure of moving contact side are fixed on the support of moving contact (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611169508.XA CN106531542B (en) | 2016-12-16 | 2016-12-16 | A kind of vacuum interrupter with composite barrier structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611169508.XA CN106531542B (en) | 2016-12-16 | 2016-12-16 | A kind of vacuum interrupter with composite barrier structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106531542A CN106531542A (en) | 2017-03-22 |
| CN106531542B true CN106531542B (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611169508.XA Active CN106531542B (en) | 2016-12-16 | 2016-12-16 | A kind of vacuum interrupter with composite barrier structure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107170634A (en) * | 2017-07-12 | 2017-09-15 | 湖北大禹汉光真空电器有限公司 | A kind of exposed shielding device for accelerating vacuum interrupter to radiate |
| CN109841451A (en) * | 2017-11-28 | 2019-06-04 | 天津平高智能电气有限公司 | Vacuum interrupter and the dc bypass switch for using the arc-chutes |
| DE102019216663B4 (en) * | 2019-10-29 | 2023-02-02 | Siemens Aktiengesellschaft | Vacuum switching device for a circuit with main and auxiliary current path |
| CN112435889A (en) * | 2020-12-01 | 2021-03-02 | 郑州大学 | High-voltage integrated static and dynamic self-voltage-sharing vacuum arc extinguish chamber |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1433036A (en) * | 2002-01-11 | 2003-07-30 | 三菱电机株式会社 | Switching vacuum tube |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5381951B2 (en) * | 2010-10-04 | 2014-01-08 | 三菱電機株式会社 | Vacuum valve |
| JP6250965B2 (en) * | 2013-07-05 | 2017-12-20 | 株式会社東芝 | Resin insulated vacuum valve |
-
2016
- 2016-12-16 CN CN201611169508.XA patent/CN106531542B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1433036A (en) * | 2002-01-11 | 2003-07-30 | 三菱电机株式会社 | Switching vacuum tube |
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| CN106531542A (en) | 2017-03-22 |
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Effective date of registration: 20210819 Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. Address before: 710075 Shaanxi city of Xi'an province high tech Zone No. 7 Tang Xing Lu Patentee before: CHINA XD ELECTRIC Co.,Ltd. |
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Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |
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