CN201282298Y - Gas-filled type line-feeding casing tube - Google Patents
Gas-filled type line-feeding casing tube Download PDFInfo
- Publication number
- CN201282298Y CN201282298Y CNU200820221793XU CN200820221793U CN201282298Y CN 201282298 Y CN201282298 Y CN 201282298Y CN U200820221793X U CNU200820221793X U CN U200820221793XU CN 200820221793 U CN200820221793 U CN 200820221793U CN 201282298 Y CN201282298 Y CN 201282298Y
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- CN
- China
- Prior art keywords
- intershield
- flange
- gas
- filled type
- center conductor
- 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 - Lifetime
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- Gas-Insulated Switchgears (AREA)
Abstract
The utility model discloses a gas-filled bushing of incoming and outgoing lines. The bushing comprises a center conductor; the center conductor is sleeved inside an intershield; the intershield is sleeved inside the grounded shield; and the upper end of the grounded shield is fixedly connected with the flange under a porcelain bushing through a grounding flange. The bushing is characterized in that the intershield is formed by the connection of the lower part of the intershield and the upper part of the intershield; and the connecting part is fixed at the upper end of the grounded shield. The intershield provided by the utility model adopts a flange connection type detachable structure, so that the processing length of the intershield is reduced, the difficulty in processing is reduced, and more convenient processing, transportation, storage and installation of the intershield are ensured. Therefore, not only the electrical properties under a working state are ensured, but also the manufacture cost of the intershield is reduced.
Description
Technical field
The utility model relates to the gas-filled type turnover thread casing intershield of using in a kind of potting breaker and the Cubicle Gas-Insulated Switchgear (GIS), particularly a kind of gas-filled type turnover thread casing intershield of 1100kV electric pressure.
Background technology
The turnover thread casing all has use in the potting breaker of other electric pressure and GIS, high voltage can be incorporated in the corresponding apparatus by this assembly.Along with the raising of electric pressure, length, diameter, design and the manufacture difficulty of gas-filled type turnover thread casing all increasing, and also will increase as the length and the diameter of the intershield of one of its main composition parts thereupon.The intershield length of the gas-filled type turnover thread casing of 550kV and following electric pressure generally below 3m, is overall structure.But gas-filled type turnover thread casing for the 1100kV electric pressure, the about 5m of length of shielding in the middle of it, and diameter has also increased, if still adopt overall structure, all brought very big difficulty will for processing, transhipment, keeping and installation, the economy of whole turnover thread casing also can be affected simultaneously.
Summary of the invention
The purpose of this utility model provides a kind of 1100kV gas-filled type turnover thread casing, and special structure is adopted in its intershield, can shorten the processing length of intershield, and the bonding strength height makes intershield processing, transhipment, keeping and installs all very convenient; And both guaranteed the electric property under the operating state; Also reduced the manufacturing cost of intershield.
For reaching above purpose, the utility model takes following technical scheme to be achieved:
A kind of gas-filled type turnover thread casing, comprise center conductor, this center conductor is enclosed within the intershield, intershield is enclosed within the earth shield, fixedly connected with the insulator lower flange by the flange of ground connection in the earth shield upper end, it is characterized in that: described intershield is to be connected and composed by intershield bottom and intershield top, and connecting portion is fixed on the earth shield upper end.
In the such scheme, described intershield upper and lower part is connected to flange connection.This flange connecting portion is fixed on the earth shield upper end by the insulation supporting rod.The intershield upper flange is provided with the countersunk head connecting hole, and the intershield lower flange is provided with threaded connection hole; With bolt the intershield top and the bottom are fused;
The utility model has the advantages that:
1, conventional structure need be designed intershield very long and that fix in the end changes the short shielding of two parts up and down of two joints into and is fixedly supported on the middle part, two-part up and down termination all is designed to flange arrangement, with bolt flange is linked together, promptly become one.And be fixed on earth shield upper end by the insulation supporting rod.Earth shield is fixed by the flange and the insulator lower flange of ground connection.Such structure had both guaranteed the isolation of electric aspect, made intershield, earth shield, insulator form one group of same axis body again; Center conductor passes this group and is fixed on the insulator upper flange with the axle center of axis body.Center conductor is in high potential, and intershield is in floating potential, and earth shield is in earthing potential.By adjusting the diameter and the length of earth shield, intershield, can make the electric field strength on center conductor and insulator surface satisfy engineering demand.
2, the dismantled and assembled structure of flange join type is adopted in intershield, and the length of every part all within 2m～3m, has shortened the processing length of intershield, reduced difficulty of processing, the bonding strength height, processing, transportation and keeping are all more convenient, thereby effectively reduce the manufacturing cost of intershield.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the intershield connection diagram of Fig. 1.
Among Fig. 1, Fig. 2: 1, center conductor; 2, intershield bottom; 3, the flange of ground connection; 4, insulator lower flange; 5, following shading ring; 6, earth shield; 7, insulation supporting rod; 8, intershield top; 9, insulator; 10, insulator upper flange; 11, go up shading ring; 12, bolt.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further details.
As shown in Figure 1, a kind of gas-filled type turnover thread casing, comprise center conductor 1, this center conductor is enclosed within the intershield, intershield is enclosed within the earth shield 6, fixedly connected with insulator lower flange 4 by the flange 3 of ground connection in the earth shield upper end, intershield is connected and composed by intershield bottom 2 and intershield top 8, and the flange that is connected the end on intershield bottom 2 and intershield top 8 is fixed on earth shield 6 upper ends by insulation supporting rod 7.Center conductor 1, earth shield 6, intershield are enclosed within the insulator 9, and coaxial with insulator 9; Center conductor 1 upper end is fixed on the insulator upper flange 10 by flange, and last shading ring 11 also is fixed on the insulator upper flange 10, and following shading ring 5 is fixed on the insulator lower flange 4.
The connecting portion of intershield as shown in Figure 2, the flange on the flange of intershield bottom 2 and intershield top 8 is connected by bolt 12 and links together, upper flange is designed to counterbore, and lower flange is designed to helicitic texture, has guaranteed that connecting bolt 12 is all in flange.
Claims (4)
1, a kind of gas-filled type turnover thread casing, comprise center conductor, this center conductor is enclosed within the intershield, intershield is enclosed within the earth shield, fixedly connected with the insulator lower flange by the flange of ground connection in the earth shield upper end, it is characterized in that: described intershield is to be connected and composed by intershield bottom and intershield top, and connecting portion is fixed on the earth shield upper end.
2, gas-filled type turnover thread casing as claimed in claim 1, it is characterized in that: described intershield upper and lower part is connected to flange connection.
3, gas-filled type turnover thread casing as claimed in claim 1 or 2, it is characterized in that: described connecting portion is fixed on the earth shield upper end by the insulation supporting rod.
4, gas-filled type turnover thread casing as claimed in claim 2, it is characterized in that: described intershield upper flange is provided with the countersunk head connecting hole, and the intershield lower flange is provided with threaded connection hole, the intershield top and the bottom can be fused with bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820221793XU CN201282298Y (en) | 2008-10-09 | 2008-10-09 | Gas-filled type line-feeding casing tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820221793XU CN201282298Y (en) | 2008-10-09 | 2008-10-09 | Gas-filled type line-feeding casing tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201282298Y true CN201282298Y (en) | 2009-07-29 |
Family
ID=40929164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820221793XU Expired - Lifetime CN201282298Y (en) | 2008-10-09 | 2008-10-09 | Gas-filled type line-feeding casing tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201282298Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570361A (en) * | 2011-12-15 | 2012-07-11 | 平高集团有限公司 | Ultrahigh voltage direct current wall bushing and shielding structure thereof |
| CN103026564A (en) * | 2010-09-13 | 2013-04-03 | 三菱电机株式会社 | Gas-insulated electrical appliance |
-
2008
- 2008-10-09 CN CNU200820221793XU patent/CN201282298Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103026564A (en) * | 2010-09-13 | 2013-04-03 | 三菱电机株式会社 | Gas-insulated electrical appliance |
| CN102570361A (en) * | 2011-12-15 | 2012-07-11 | 平高集团有限公司 | Ultrahigh voltage direct current wall bushing and shielding structure thereof |
| CN102570361B (en) * | 2011-12-15 | 2015-05-13 | 平高集团有限公司 | Ultrahigh voltage direct current wall bushing and shielding structure thereof |
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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: 20090729 |
|
| CX01 | Expiry of patent term |