CN201465788U - Current transformer for GIS - Google Patents
Current transformer for GIS Download PDFInfo
- Publication number
- CN201465788U CN201465788U CN200920034007XU CN200920034007U CN201465788U CN 201465788 U CN201465788 U CN 201465788U CN 200920034007X U CN200920034007X U CN 200920034007XU CN 200920034007 U CN200920034007 U CN 200920034007U CN 201465788 U CN201465788 U CN 201465788U
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- China
- Prior art keywords
- shielding cylinder
- flange
- current transformer
- insulation
- upper flange
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model relates to the field of high-pressure GIS electric appliances, in particular to a current transformer for a GIS, comprising a shielding cylinder with an outer flange at the upper end, a coil cast outside the shielding cylinder, two fixed half rings with inner flanges and an upper flange. The outer flange of the shielding cylinder is clamped by the inner flanges of the two fixed half rings and the upper flange; and the upper flange and the two fixed half rings are fastened by bolts. The current transformer for a GIS is characterized in that an insulated half ring cylinder adapting to the inner wall of the fixed half ring is arranged between the inner wall of the fixed half ring and the shielding cylinder; and an insulated ring plate is arranged between the upper surface of the shielding cylinder and the lower surface of the upper flange.
Description
Technical field
The utility model relates to high pressure GIS appliance field, particularly a kind of GIS Current Transformer.
Background technology
The GIS Current Transformer is one of vitals of high pressure GIS electrical equipment.At present, pour into a mould after the current mutual inductor coil assembling with customer requirements in the mill, and coil is placed outside the SF6 air chamber, reduce the assembling amount of parts of SF6 air chamber, farthest reduce cleannes and moisture SF6 gas-insulated Effect on Performance.The critical component that forms the SF6 air chamber is shielding cylinder and upper and lower flange, and wherein lower flange and shielding cylinder lower end are an integral body.This type of GIS Current Transformer also includes metal shell, and metal shell is fixed between the lower flange, and the defective of existence is the short circuit circle that shielding cylinder, upper and lower flange and metal shell form coil, makes that the current ratio of current transformer is inaccurate.
Summary of the invention
The object of the present invention is to provide a kind of GIS Current Transformer, can cut off shielding cylinder, upper and lower flange and metal shell form the short circuit circle of coil, improve the precision of current transformer, and assemble simple and convenient.
In order to achieve the above object, the utility model is achieved by the following technical solutions.
A kind of GIS Current Transformer, comprise that the upper end has the shielding cylinder of outward flange, be cast in the outer coil of shielding cylinder, two stationary half with inward flange, and upper flange, the outward flange of the inward flange of two stationary half and upper flange clamping shielding cylinder, two stationary half and upper flange pass through bolted, it is characterized in that, be provided with the insulation semi-ring tube that the inwall with stationary half adapts between the inwall of described stationary half and the shielding cylinder, be provided with the insulation ring flat-plate between the lower surface of shielding cylinder upper surface and upper flange.
Further improvement of the utility model and characteristics are:
Between described shielding cylinder and the insulation ring flat-plate, be respectively arranged with the O RunddichtringO between upper flange and the insulation ring flat-plate.
Described insulation semi-ring tube and insulation ring flat-plate all adopt polytetrafluoroethylmaterial material to make.
The utility model is provided with the insulation semi-ring tube that adapts with inward flange between the inward flange of stationary half and shielding cylinder, be provided with the insulation ring flat-plate between the lower surface of shielding cylinder upper surface and upper flange, shielding cylinder and upper flange are thoroughly insulated, cut off shielding cylinder, the short circuit circle of the coil that upper and lower flange and metal shell form, improved the precision of current transformer, and the cross section of insulation semi-ring tube and the inward flange of stationary half adapt, assemble simple and convenient; Between shielding cylinder and the insulation ring flat-plate, be respectively arranged with the O RunddichtringO between upper flange and the insulation ring flat-plate, under the situation that guarantees insulation, realized the sealing of SF6 air chamber.
Description of drawings
Below in conjunction with description of drawings and specific embodiment the present invention is further illustrated.
Fig. 1 is the structural representation of 550KVGIS Current Transformer of the present utility model;
Fig. 2 is the enlarged diagram of A among Fig. 1;
Among the figure: 1 is upper flange, and 2 is shielding cylinder, and 3 is coil, and 4 is stationary half, and 5 is terminal box, and 6 is shell, and 7 are insulation semi-ring tube, and 8 is insulating cylinder, and 9 are the insulation ring flat-plate, and 10 is the O RunddichtringO.
Embodiment
With reference to Fig. 1, GIS Current Transformer of the present utility model, mainly comprise: the upper end has the shielding cylinder 2 of outward flange, lower flange and shielding cylinder lower end are connected as a single entity, coil 3 by poured with epoxy resin in shielding outside 2, two stationary half 4 and upper flange 1 are by bolted, the wherein outward flange of the inward flange of two stationary half 4 and upper flange 1 clamping shielding cylinder 2.Shell 6 is connected between the lower flange, and shell is provided with terminal box 5.
With reference to Fig. 2, be provided with the insulation semi-ring tube 7 that the inwall with stationary half 4 adapts between the inwall of stationary half 4 and the shielding cylinder 2, the cross section of this insulation semi-ring tube 7 is the folding shape, be divided into the folding section, horizontal segment and following folding section, last folding section can hold the outward flange outer wall of shielding cylinder 2, and following folding section can hold the inward flange inwall of stationary half 4.In the reality, last folding section, following folding section also can only be extended a horizontal segment two ends part, realize that insulation semi-ring tube 7 inwalls and shielding cylinder 2 get final product, and the processing of the semi-ring tube 7 that insulate like this is simple, easy to assembly; Stacked insulating cylinder 8 above insulation semi-ring tube 7, insulating cylinder 8 holds the remainder of the outer wall of shielding cylinder outward flange.Then, between the lower surface of shielding cylinder 2 upper surfaces and upper flange 1, be provided with insulation ring flat-plate 9, realize the insulation of upper flange 1 and shielding cylinder 2; Simultaneously, between shielding cylinder 2 and insulation ring flat-plate 9, upper flange 1 and insulation be respectively arranged with O RunddichtringO 10, the sealing of SF6 gas in shielding cylinder 2 inner chambers that cause in can guaranteeing upper flange 1 and shielding cylinder 2 being connected between the ring flat-plate 9.In the present embodiment, insulation semi-ring tube 7, insulating cylinder 8 and insulation ring flat-plate 9 all adopt polytetrafluoroethylmaterial material to make.
Claims (3)
1. GIS Current Transformer, comprise that the upper end has the shielding cylinder of outward flange, be cast in the outer coil of shielding cylinder, two stationary half with inward flange, and upper flange, the outward flange of the inward flange of two stationary half and upper flange clamping shielding cylinder, two stationary half and upper flange pass through bolted, it is characterized in that, be provided with the insulation semi-ring tube that the inwall with stationary half adapts between the inwall of described stationary half and the shielding cylinder, be provided with the insulation ring flat-plate between the lower surface of shielding cylinder upper surface and upper flange.
2. a kind of GIS Current Transformer according to claim 1 is characterized in that, between described shielding cylinder and the insulation ring flat-plate, be respectively arranged with the O RunddichtringO between upper flange and the insulation ring flat-plate.
3. a kind of GIS Current Transformer according to claim 1 is characterized in that, described insulation semi-ring tube and insulation ring flat-plate all adopt polytetrafluoroethylmaterial material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920034007XU CN201465788U (en) | 2009-07-24 | 2009-07-24 | Current transformer for GIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920034007XU CN201465788U (en) | 2009-07-24 | 2009-07-24 | Current transformer for GIS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201465788U true CN201465788U (en) | 2010-05-12 |
Family
ID=42393136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920034007XU Expired - Lifetime CN201465788U (en) | 2009-07-24 | 2009-07-24 | Current transformer for GIS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201465788U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637516A (en) * | 2012-04-27 | 2012-08-15 | 南京南瑞继保电气有限公司 | Shielding barrel used for GIS (Geographic Information System) electronic type current mutual inductor |
| CN104378963A (en) * | 2014-11-20 | 2015-02-25 | 平高集团有限公司 | Middle potential screen, current transformer and assembling method of middle potential screen |
| FR3016995A1 (en) * | 2014-01-24 | 2015-07-31 | Alstom Technology Ltd | ASSEMBLING A FLANGE ON A TUBE FOR A TRANSFORMER |
| CN111292943A (en) * | 2018-12-06 | 2020-06-16 | 河南平芝高压开关有限公司 | GIS type semi-casting external current transformer and GIS equipment |
-
2009
- 2009-07-24 CN CN200920034007XU patent/CN201465788U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637516A (en) * | 2012-04-27 | 2012-08-15 | 南京南瑞继保电气有限公司 | Shielding barrel used for GIS (Geographic Information System) electronic type current mutual inductor |
| FR3016995A1 (en) * | 2014-01-24 | 2015-07-31 | Alstom Technology Ltd | ASSEMBLING A FLANGE ON A TUBE FOR A TRANSFORMER |
| CN104378963A (en) * | 2014-11-20 | 2015-02-25 | 平高集团有限公司 | Middle potential screen, current transformer and assembling method of middle potential screen |
| CN104378963B (en) * | 2014-11-20 | 2018-03-23 | 平高集团有限公司 | The assembly method of intermediate potential shielding, current transformer and intermediate potential shielding |
| CN111292943A (en) * | 2018-12-06 | 2020-06-16 | 河南平芝高压开关有限公司 | GIS type semi-casting external current transformer and GIS equipment |
| CN111292943B (en) * | 2018-12-06 | 2021-06-29 | 河南平芝高压开关有限公司 | GIS type semi-casting external current transformer and GIS equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
|
| CX01 | Expiry of patent term |