CN202502916U - High-voltage earthing switch with shielding covers - Google Patents
High-voltage earthing switch with shielding covers Download PDFInfo
- Publication number
- CN202502916U CN202502916U CN2012200740002U CN201220074000U CN202502916U CN 202502916 U CN202502916 U CN 202502916U CN 2012200740002 U CN2012200740002 U CN 2012200740002U CN 201220074000 U CN201220074000 U CN 201220074000U CN 202502916 U CN202502916 U CN 202502916U
- Authority
- CN
- China
- Prior art keywords
- radome
- high voltage
- shielding
- ground switch
- low pressure
- 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
Links
Images
Landscapes
- Details Of Aerials (AREA)
Abstract
The utility model relates to the power equipment field and particularly relates to an earthing switch. The high-voltage earthing switch with shielding covers comprises a horizontal base, an insulating support member located on the base, a static contact head which is arranged on the upper end part of the insulating support member, and a movable contact head. The movable contact head is connected with a switch-on-off operating mechanism. An epoxy resin casting body is provided outside the joint region of the static contact head and the movable contact head. Shielding covers are covered the internal of the epoxy resin casting body. The shielding covers comprise a high-voltage shielding cover for high voltage shielding and an earthing low-voltage shielding cover. With the high-voltage shielding cover and the low-voltage shielding cover which are covered outside the joint region of the static contact head and the movable contact head, the electric field distribution can be effectively improved, tip discharge and air gap discharge are excluded, partial discharge is reduced, and the use security and the service life of the high-voltage earthing switch are improved.
Description
Technical field
The utility model relates to field of electrical equipment, relates in particular to a kind of earthed switch.
Background technology
High voltage switchgear is widely used in the electric power system, and as the control of electric power system, the electric equipment of protection usefulness, its safety, reliability service have great important to stability, the safe power supply of electric power system.High voltage ground switch is the earthing device in the three-phase ac power system, supplies the usefulness of high pressure, supertension line ground connection when the maintenance electric equipment.
Yet under high-tension effect, the fixed contact of high voltage ground switch and the folding of moving contact are easy to produce partial discharge, influence the safety of maintainer and equipment.
The utility model content
The purpose of the utility model is to provide a kind of high voltage ground switch that is provided with radome, solves above technical problem.
The technical problem that the utility model solved can adopt following technical scheme to realize:
Be provided with the high voltage ground switch of radome; Comprise a horizontal direction base, be positioned at the insulated support on the base; The upper end of said insulated support is provided with fixed contact, also comprises a moving contact, it is characterized in that; Said moving contact connects the operating mechanism of an execution divide-shut brake; Said fixed contact and said moving contact deciliter place are provided with an epoxy resin poured body in the outside in zone, and the inner packet of said epoxy resin poured body is covered with radome, and said radome comprises that one realizes the high-tension shielding cover of high-tension shielding and the low pressure radome of ground connection.
Said high-tension shielding cover is positioned at the inwall of said epoxy resin poured body, and said high-tension shielding cover is provided with at least two binding posts that adopt soldering to draw, and said binding post is electrically connected with the bus that passes said insulated support.
The utility model fixed contact and moving contact deciliter place is provided with high-tension shielding cover and low pressure radome in the outside in zone, can improve Electric Field Distribution effectively, gets rid of point discharge and bubble-discharge, and minimizing office puts, and improves safety in utilization and increases the service life.
The tubular shielding new cover that said high-tension shielding cover adopts copper mesh to process.Said shielding new cover adopts the stretching copper mesh, the shielding new cover that also can process for aluminium net, aluminium alloy net, stainless (steel) wire.
The two ends up and down of said shielding new cover are provided with flange, so that eliminate burr.
Said shielding new cover is provided with diamond hole, the length of side 2-3mm of said diamond hole.Said shielding new cover is provided with other passes, like hexangle type, circular hole, triangular form, fish scale hole.
Said low pressure radome comprises an annular stent, is wound in the screen that the semi-conducting material on the said annular stent is processed, and is provided with lead in the said screen, the lead that said lead adopts the coiling of tin-coated copper conductor to form.
Said low pressure radome is provided with four grounded at least terminal, and at least one said earth terminal is connected with lead.Said low pressure radome reliably is connected with ground, guarantees can not cause the discharge that suspends.
Because the low pressure radome is provided with the screen that semi-conducting material is processed; The residing high voltage electric field of each point position is different; There is potential difference in point-to-point transmission, might form internal current, so low pressure radome diverse location each point is necessary reliably to connect with conductor or conductive materials; Force ground connection then, change internal electric field and distribute.
The inboard of said low pressure radome is provided with the insulating barrier that electrician's paper roll becomes.The outside of said low pressure radome is provided with the enhancement layer that fiberglass gridding cloth is processed, to strengthen the epoxy resin interface strength of injection moulding.
Beneficial effect: owing to adopt technique scheme; The utility model fixed contact and moving contact deciliter place is coated with high-tension shielding cover and low pressure radome in the outside in zone; Can improve Electric Field Distribution effectively; Get rid of point discharge and bubble-discharge, minimizing office puts, and improves the safety in utilization of high voltage ground switch and increases the service life.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structure chart of the high-tension shielding cover of the utility model;
Fig. 3 is the structure chart of the low pressure radome of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand with effect and understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 1, Fig. 2, Fig. 3; Be provided with the high voltage ground switch of radome; Comprise a horizontal direction base 11, be positioned at the insulated support 12 on the base 11, the upper end of insulated support 12 is provided with fixed contact 13, also comprises a moving contact 14; Moving contact 14 connects the operating mechanism of an execution divide-shut brake; Fixed contact 13 is provided with an epoxy resin poured body with 14 deciliters places of moving contact in the outside in zone, and the inner packet of epoxy resin poured body is covered with radome, and radome comprises that one realizes the high-tension shielding cover 1 of high-tension shielding and the low pressure radome 2 of ground connection.
High-tension shielding cover 1 is positioned at the inwall of epoxy resin poured body, and high-tension shielding cover 1 is provided with at least two binding posts 111 that adopt soldering to draw, and binding post 111 is electrically connected with the bus that passes insulated support 12.
The utility model fixed contact 13 is provided with high-tension shielding cover 1 and low pressure radome 2 with 14 deciliters places of moving contact in the outside in zone; Can improve Electric Field Distribution effectively; Get rid of point discharge and bubble-discharge, minimizing office puts, and improves safety in utilization and increases the service life.
High-tension shielding cover 1 adopts the shielding new cover of tubular.In the practical implementation, the shielding new cover that shielding new cover preferably adopts copper mesh to process, copper mesh have good shield effectiveness.Shielding new cover adopts the stretching copper mesh, the shielding new cover that also can process for aluminium net, aluminium alloy net, stainless (steel) wire.Shielding new cover is provided with common diamond hole, the length of side 2-3mm of diamond hole.Also can be provided with other passes on the shielding new cover, like hexangle type, circular hole, triangular form, fish scale hole.The two ends up and down of shielding new cover are provided with flange, so that eliminate burr.
Low pressure radome 2 comprises an annular stent, is wound in the screen that the semi-conducting material on the annular stent is processed, and is provided with lead in the screen, and lead adopts the coiling of tin-coated copper conductor to form.Low pressure radome 2 is provided with four grounded at least terminal 23, and at least one earth terminal 23 is connected with lead.Low pressure radome 2 reliably is connected with ground, guarantees can not cause the discharge that suspends.
The inboard of low pressure radome 2 is provided with the insulating barrier 21 that electrician's paper roll becomes.The outside of low pressure radome 2 is provided with the enhancement layer 22 that fiberglass gridding cloth is processed, to strengthen the epoxy resin interface strength of injection moulding.
More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (8)
1. be provided with the high voltage ground switch of radome; Comprise a horizontal direction base, be positioned at the insulated support on the base; The upper end of said insulated support is provided with fixed contact, also comprises a moving contact, it is characterized in that; Said moving contact connects the operating mechanism of an execution divide-shut brake; Said fixed contact and said moving contact deciliter place are provided with an epoxy resin poured body in the outside in zone, and the inner packet of said epoxy resin poured body is covered with radome, and said radome comprises that one realizes the high-tension shielding cover of high-tension shielding and the low pressure radome of ground connection.
2. the high voltage ground switch that is provided with radome according to claim 1; It is characterized in that; Said high-tension shielding cover is positioned at the inwall of said epoxy resin poured body; Said high-tension shielding cover is provided with at least two binding posts that adopt soldering to draw, and said binding post is electrically connected with the bus that passes said insulated support.
3. the high voltage ground switch that is provided with radome according to claim 2 is characterized in that, the tubular shielding new cover that said high-tension shielding cover adopts the stretching copper mesh to process.
4. the high voltage ground switch that is provided with radome according to claim 3 is characterized in that, the two ends up and down of said shielding new cover are provided with flange.
5. the high voltage ground switch that is provided with radome according to claim 4 is characterized in that said shielding new cover is provided with diamond hole, the length of side 2-3mm of said diamond hole.
6. the high voltage ground switch that is provided with radome according to claim 1; It is characterized in that; Said low pressure radome comprises an annular stent; Be wound in the screen that the semi-conducting material on the said annular stent is processed, be provided with lead in the said screen, the lead that said lead adopts the coiling of tin-coated copper conductor to form.
7. the high voltage ground switch that is provided with radome according to claim 6 is characterized in that, said low pressure radome is provided with four grounded at least terminal, and at least one said earth terminal is connected with lead.
8. the high voltage ground switch that is provided with radome according to claim 7 is characterized in that, the inboard of said low pressure radome is provided with the insulating barrier that electrician's paper roll becomes; The outside of said low pressure radome is provided with the enhancement layer that fiberglass gridding cloth is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200740002U CN202502916U (en) | 2012-03-01 | 2012-03-01 | High-voltage earthing switch with shielding covers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200740002U CN202502916U (en) | 2012-03-01 | 2012-03-01 | High-voltage earthing switch with shielding covers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502916U true CN202502916U (en) | 2012-10-24 |
Family
ID=47039524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200740002U Expired - Fee Related CN202502916U (en) | 2012-03-01 | 2012-03-01 | High-voltage earthing switch with shielding covers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202502916U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531530A (en) * | 2016-12-16 | 2017-03-22 | 中国西电电气股份有限公司 | Directly operated type isolation switch |
| CN113012973A (en) * | 2021-02-26 | 2021-06-22 | 西安西电开关电气有限公司 | Isolating switch with high-current switching-on and switching-off capacity |
-
2012
- 2012-03-01 CN CN2012200740002U patent/CN202502916U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531530A (en) * | 2016-12-16 | 2017-03-22 | 中国西电电气股份有限公司 | Directly operated type isolation switch |
| CN113012973A (en) * | 2021-02-26 | 2021-06-22 | 西安西电开关电气有限公司 | Isolating switch with high-current switching-on and switching-off capacity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103296620A (en) | Wall feed-through sleeve with high-low voltage shielding | |
| CN202502916U (en) | High-voltage earthing switch with shielding covers | |
| CN202333561U (en) | Contact box used in high-voltage switch cabinet | |
| CN202474544U (en) | Contact box capable of preventing corona discharge | |
| CN201570782U (en) | Intelligent excitation pilot discharge lightning arrester | |
| CN203260987U (en) | High-voltage line lightning arrester | |
| CN202514233U (en) | High voltage wire high and low voltage combined shielding system | |
| CN202473432U (en) | Insulator preventing flashover discharge | |
| CN201985500U (en) | Oblique-pulling and hanging type lightning arrester for 500KV power transmission line | |
| CN204332890U (en) | With the fuse switch of electricity-detection grounding device | |
| CN203481768U (en) | Spherical fixed outer-gap lightning arrester for 10kV system insulating overhead line tension rod | |
| CN202502893U (en) | Zero sequence current transformer with double-shield structure | |
| CN202940207U (en) | Drop-out high-voltage fuse | |
| CN206673547U (en) | A kind of new 6 10 kilovolts of overhead lines double-rod structure for installing lightning arrester | |
| CN203562738U (en) | Lightning protection device for aerial insulation line | |
| CN204857351U (en) | Lightning arrester | |
| CN205159194U (en) | Solid utmost point post that seals of PT cabinet | |
| CN204966184U (en) | Drop -out circuit overvoltage protection device | |
| CN214706606U (en) | Main insulator for top bus solid insulation switch equipment | |
| CN203660276U (en) | Gap lightning protection device | |
| CN2404248Y (en) | Special lightning-protection & arc extinguishing device for high-voltage transmission line | |
| CN211239058U (en) | Double-loop double-rod platform transformer | |
| CN204012186U (en) | A kind of Novel lightning-proof device based on burning exoergic technology | |
| CN203967512U (en) | Clavate electric pole type composite sheath arrester with gaps for 10kV overhead transmission line | |
| CN219627218U (en) | Voltage transformer handcart for high-voltage switch cabinet body |
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 |
Granted publication date: 20121024 Termination date: 20150301 |
|
| EXPY | Termination of patent right or utility model |