CN202856232U - Shielding device for movable end of solid insulation terminal post - Google Patents
Shielding device for movable end of solid insulation terminal post Download PDFInfo
- Publication number
- CN202856232U CN202856232U CN 201220454575 CN201220454575U CN202856232U CN 202856232 U CN202856232 U CN 202856232U CN 201220454575 CN201220454575 CN 201220454575 CN 201220454575 U CN201220454575 U CN 201220454575U CN 202856232 U CN202856232 U CN 202856232U
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- CN
- China
- Prior art keywords
- vacuum interrupter
- shielding
- movable end
- terminal post
- pole
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a shielding device for the movable end of a solid insulation terminal post, which comprises a ground plane, an insulating layer, a vacuum interrupter, an annular shielding can, an annular conductive sealing ring and the like. The center of the shielding can is provided with a hole. The faying surface of the movable end of the terminal post of the vacuum interrupter is mechanically connected with the shielding can through a convex ring and a concave ring, wherein the convex ring is arranged on one side of the vacuum interrupter and the concave ring is arranged on the other side of the vacuum interrupter. the movable end of the terminal post of the vacuum interrupter is electrically connected with the shielding can through the conductive sealing ring. After being mechanically and electrically connected with each other, the shielding can, the conductive sealing ring and the vacuum interrupter are integrally compressed inside the insulating layer through pressure injection. The external surface of the molded insulating layer is coated with the conductive or semi-conductive ground plane. Compared with the prior art, due to the adoption of the shielding device, the problem that the flashover discharge phenomenon easily occurs to the movable end of the terminal post of an existing solid insulation switch to decrease the insulation capacity of the insulation switch due to the complicated connecting mechanism and the strong electric field of the movable end is solved.
Description
Technical field
The utility model relates to power transmission and distribution switchgear manufacturing technology field, and especially a kind of outside is provided with solid insulating layer, and surface of insulating layer is the solid insulation pole moved end screening arrangement that is coated with ground plane.
Background technology
Solid insulation ring main unit is the focus of present ring main unit development, and as the key equipment of urban network restructuring and the control of user's controller switching equipment, the quality of ring main unit quality is directly connected to the safety and reliability of electrical power trans mission/distribution system.Because SF6 gas has superior arc quenching effect, use very general with the gas isolated ring main unit of SF6 at present, but because SF6 gas is a kind of gas of not environmental protection, its destructiveness to atmospheric ozone layer is equivalent to 23900 times of CO2, as deal with improperly and understand the greenhouse effect that aggravate the earth, along with people constantly strengthen environmental consciousness, the unfavorable factor of SF6 gas-insulated ring network cabinet has also caused people's concern.
Existing many enterprises release the solid insulation ring main unit product in the market, be the utility model of CN102222868A such as China Patent No., a kind of solid insulation ring main unit is disclosed, the surface of insulating layer of its vacuum switch unit is coated with semiconductive material and ground connection, the electrode column of vacuum arc extinguishing chamber moved end is connected with insulated tension pole, rely on air insulation, because surface of insulating layer is coated with semiconductive material and ground connection, the earth potential of product is whole surface of insulating layer, but because just there are a lot of wedge angles in electrode column of vacuum arc extinguishing chamber moved end itself, add and to be connected with flexible link or other electric conductor, the movable end of vacuum arc extinguishing chamber side Electric Field Distribution of pole is very inhomogeneous, electric field strength is easy to be higher than the anti-disruptive field intensity of air, local flashover discharge very easily occurs, when serious even ebb-flow discharge can occur, destroy machinery and the dielectric strength of insulating barrier, cause that the insulating capacity of product descends.
The utility model content
Problem to be solved in the utility model provides that a kind of can to solve original solid insulation switch pole moved end connecting link more, and electric field is stronger, occurs easily to dodge to iron discharge, causes the solid insulation pole moved end screening arrangement that the insulating capacity of product descends.
In order to address the above problem, the technical scheme of the utility model solid insulation pole moved end screening arrangement is: this solid insulation pole moved end screening arrangement includes insulating barrier, vacuum interrupter, insulated tension pole and radome etc.The centre of described radome has the hole that allows described insulated tension pole pass through; These two parts of the pole moved end of described vacuum interrupter and described radome, the scrobicular ring mechanical connection that the bulge loop that is provided with by one of them parts and another parts are provided with; The pole moved end of described vacuum interrupter is electrically connected with described radome by the conductive seal circle; The interstitial hole that described insulated tension pole passes described radome is connected with the pole moved end of described vacuum interrupter; Described radome, described conductive seal circle and described vacuum interrupter are located at the inside of described insulating barrier.The pole moved end formed wedge angle of when assembling that can effectively mask vacuum interrupter by radome produces the potential hazard of point discharge, obviously reduces the pole moved end of vacuum interrupter and the electric field strength non-uniform phenomenon of insulating barrier and the formed point of interface of air.
Because adopt technique scheme, the utility model compared with prior art has following beneficial effect:
The utility model has been optimized pole electric field strength by adopting this device of radome, reduces pole moved end partial discharge value, improves the pole insulating capacity.Have the characteristics such as simple in structure, easily manufactured, applied widely.
Description of drawings
Fig. 1 is the overall schematic of the utility model embodiment solid insulation pole moved end screening arrangement.
Fig. 2 is the partial enlarged drawing at B place among Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Illustrated in figures 1 and 2 is this solid insulation pole moved end screening arrangement, include porose radome 3, conductive seal circle 4, vacuum interrupter 5 and the insulated tension pole 6 etc. in centre of ground plane 1, insulating barrier 2, annular, its implementation is as follows: the pole moved end of vacuum interrupter 5 and radome 3 these two parts are crimped on together by one of them parts bulge loop that is provided with and the scrobicular ring machinery that another parts are provided with; The pole moved end of vacuum interrupter 5 is electrically connected with radome 3 by conductive seal circle 4; The interstitial hole that insulated tension pole 6 passes radome 3 is connected with the pole moved end of vacuum interrupter 5; Pressure injection is in the inside of insulating barrier 2 together for machinery and the be electrically connected radome 3, conductive seal circle 4 and the vacuum interrupter 5 that connect, and at conduction or the semiconductive ground plane 1 of outer surface coating one deck of insulating barrier 2, radome 3 can be made by conductor or semi-conducting material at last.
The pole moved end formed wedge angle of when assembling that can effectively mask vacuum interrupter 5 by the utility model device produces the potential hazard of point discharge, simultaneously, obviously reduce the pole moved end of vacuum interrupter 5 and the electric field strength non-uniform phenomenon of insulating barrier 2 and the formed point of interface of air.
Claims (1)
1. a solid insulation pole moved end screening arrangement includes insulating barrier (2), vacuum interrupter (5), and insulated tension pole (6) and radome (3) is characterized in that: the centre of described radome (3) has the hole that allows described insulated tension pole (6) pass through; These two parts of the pole moved end of described vacuum interrupter (5) and described radome (3), the scrobicular ring mechanical connection that the bulge loop that is provided with by one of them parts and another parts are provided with; The pole moved end of described vacuum interrupter (5) is electrically connected with described radome (3) by conductive seal circle (4); The interstitial hole that described insulated tension pole (6) passes described radome (3) is connected with the pole moved end of described vacuum interrupter (5); Described radome (3), described conductive seal circle (4) and described vacuum interrupter (5) are located at the inside of described insulating barrier (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220454575 CN202856232U (en) | 2012-09-07 | 2012-09-07 | Shielding device for movable end of solid insulation terminal post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220454575 CN202856232U (en) | 2012-09-07 | 2012-09-07 | Shielding device for movable end of solid insulation terminal post |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856232U true CN202856232U (en) | 2013-04-03 |
Family
ID=47987390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220454575 Withdrawn - After Issue CN202856232U (en) | 2012-09-07 | 2012-09-07 | Shielding device for movable end of solid insulation terminal post |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882149A (en) * | 2012-09-07 | 2013-01-16 | 北海银河开关设备有限公司 | Solid insulated pole moving end shielding device |
-
2012
- 2012-09-07 CN CN 201220454575 patent/CN202856232U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882149A (en) * | 2012-09-07 | 2013-01-16 | 北海银河开关设备有限公司 | Solid insulated pole moving end shielding device |
| CN102882149B (en) * | 2012-09-07 | 2015-12-23 | 北海银河开关设备有限公司 | Solid insulation pole moved end screening arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130403 Effective date of abandoning: 20151223 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |