CN202712031U - Moving contact structure of 12kV three-position SF6 load switch - Google Patents
Moving contact structure of 12kV three-position SF6 load switch Download PDFInfo
- Publication number
- CN202712031U CN202712031U CN 201220224406 CN201220224406U CN202712031U CN 202712031 U CN202712031 U CN 202712031U CN 201220224406 CN201220224406 CN 201220224406 CN 201220224406 U CN201220224406 U CN 201220224406U CN 202712031 U CN202712031 U CN 202712031U
- Authority
- CN
- China
- Prior art keywords
- moving contact
- load switch
- fracture
- inlet end
- wire inlet
- 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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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a moving contact structure of a 12kV three-position SF6 load switch. The moving contact structure comprises a moving contact, an upper wire inlet end and a lower wire inlet end. The moving contact is movably contacted with the upper wire inlet end and the lower wire inlet end respectively and can rotate around the own axis. In an opening and grounding state, the moving contact is separated from the upper wire inlet end and the lower wire inlet end at the same time. According to the utility model, two fractures are formed; a load switch with two fractures can bear a higher insulation level than a load switch with single fracture; the fracture distance of two fractures is larger than that of single fracture; and the strength of an insulating medium between two fractures is higher than the strength of an insulating medium of single fracture.
Description
Technical field
The utility model relates to a kind of high voltage switchgear, particularly a kind of 12kV three station SF6 on-load switches.
Background technology
12kV epoxy package three station SF6 on-load switches are applied in the distribution network of 12kV electric pressure, can bear reception and the distribution of electric energy, belong to the high pressure equipment for power transmission and distribution, relate to a kind of novel high pressure SF6 load switch equipment.Its on-load switch places in the epoxy resin housing, fills the SF6 gas of malleation 0.045Mpa in the housing, has good electrical insulation properties and good load break performance, can not be affected by the external environment, insulation property are high, and mechanical strength is large, and life-span length can not be affected by the external environment.
The utility model content
In view of this, the purpose of this utility model is to provide the reliability of product on/off switch, has improved the on-load switch moving contact structure of the insulation property of product isolation fracture.
For achieving the above object, technical solution of the present utility model is:
A kind of 12kV three station SF6 load switch contact structures, comprise moving contact, enterprising line end and lower end of incoming cables, wherein, moving contact respectively with enterprising line end and lower end of incoming cables movable contact, it can be around the rotation of self axle, when separating brake during with ground state moving contact separate with lower end of incoming cables with enterprising line end simultaneously.
After adopting such scheme, the utility model forms two fractures, the on-load switch of double-fracture can bear the insulation level higher than single break, and the fracture distance of double-fracture is larger than the distance of single break, and the dielectric intensity of the dielectric strength ratio single break between fracture is high.
Description of drawings
Fig. 1 is structure cut-away view of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described.
As shown in Figure 1, the utility model three station SF6 load switch upper shells 1, moving contact of grounding switch 2, lower house 3, static contact of grounding switch 4, enterprising line end 5, arc extinguishing grid pieces 6, explosion-proof diaphragm 7 on-load switch moving contacts 8 and lower end of incoming cables 9 form.Moving contact 8 can be around self axle rotation in vertical plane, make it distinguish movable contacts with enterprising line end 5 and lower end of incoming cables 9, on-load switch has two fractures at gate-dividing state like this, namely when moving contact 8 clockwise directions rotate to static shown position, moving contact 7 is in off-state with upper static contact 5, moving contact 7 is in off-state with lower fixed contact 8, form two fractures, the on-load switch of double-fracture can bear the insulation level higher than single break, the fracture distance of double-fracture is larger than the distance of single break, and the dielectric intensity of the dielectric strength ratio single break between fracture is high.The double-fracture on-load switch is when cut-offfing, voltage instantaneous between fracture becomes industrial frequency withstand voltage by zero potential, simultaneously, dielectric recovery level between fracture will be higher than fracture and keep puncture voltage, in the process that on-load switch turns clockwise, again because the rapid movement of moving contact 8, when being cut-off, on-load switch under the effect of the long arc that forms between fracture at motional inertia, drifts on the arc extinguishing grid pieces 9, be divided into several sections little electric arcs by arc extinguishing grid pieces 9, under the cooling effect of arc-chute, little arc extinction adds that the dielectric recovery level between fracture is higher, long arc extinguishes fast, can cut-off higher load current.The moving contact 7 of the on-load switch of double-fracture under the touch spring effect, can well with upper static contact 5, lower fixed contact 8 close contacts.The innovative design purpose of this product is, has improved the reliability of product on/off switch, has improved the insulation property of product isolation fracture, has improved the product systems safe running performance.
Claims (1)
1. 12kV three station SF6 on-load switch moving contact structures, comprise moving contact, enterprising line end and lower end of incoming cables, it is characterized in that: moving contact respectively with enterprising line end and lower end of incoming cables movable contact, it can be around the rotation of self axle, when separating brake during with ground state moving contact separate with lower end of incoming cables with enterprising line end simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224406 CN202712031U (en) | 2012-05-18 | 2012-05-18 | Moving contact structure of 12kV three-position SF6 load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220224406 CN202712031U (en) | 2012-05-18 | 2012-05-18 | Moving contact structure of 12kV three-position SF6 load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202712031U true CN202712031U (en) | 2013-01-30 |
Family
ID=47592309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220224406 Expired - Fee Related CN202712031U (en) | 2012-05-18 | 2012-05-18 | Moving contact structure of 12kV three-position SF6 load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202712031U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903901A (en) * | 2014-04-23 | 2014-07-02 | 苏金发 | Contact mechanism of three-position high-voltage switch |
| CN105938774A (en) * | 2016-06-28 | 2016-09-14 | 广东广特电气股份有限公司 | Rotary type double-break load switch |
-
2012
- 2012-05-18 CN CN 201220224406 patent/CN202712031U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903901A (en) * | 2014-04-23 | 2014-07-02 | 苏金发 | Contact mechanism of three-position high-voltage switch |
| CN105938774A (en) * | 2016-06-28 | 2016-09-14 | 广东广特电气股份有限公司 | Rotary type double-break load switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20160518 |