CN202905427U - Iron yoke end ring for extra-high voltage transformer - Google Patents
Iron yoke end ring for extra-high voltage transformer Download PDFInfo
- Publication number
- CN202905427U CN202905427U CN 201220603926 CN201220603926U CN202905427U CN 202905427 U CN202905427 U CN 202905427U CN 201220603926 CN201220603926 CN 201220603926 CN 201220603926 U CN201220603926 U CN 201220603926U CN 202905427 U CN202905427 U CN 202905427U
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- CN
- China
- Prior art keywords
- iron yoke
- cross
- yoke end
- over block
- high voltage
- 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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Abstract
The utility model discloses an iron yoke end ring for an extra-high voltage transformer. The iron yoke end ring comprises at least two layers of annular insulating cardboards, and insulating cushion blocks, wherein the insulating cushion blocks are arranged on the upper surface of each annular insulating cardboard and distributed along the circumference surface of each annular insulating cardboard; the insulating cushion blocks and the insulating cardboards are bonded together by hot pressing through glue; the number of the insulating cushion blocks on each layer is the same; and positions of the insulating cushion blocks are unified. By the iron yoke end ring, the positions of the insulating cushion blocks can be adjusted, so that the strength of the iron yoke end ring is enhanced.
Description
Technical field
The utility model relates to electric insulation spare and manufactures field, particularly a kind of iron yoke end circle for super extra-high voltage transformer.
Background technology
The rated voltage of common EHV transformer is all at 350KV to 500KV, and the rated voltage of extra-high voltage transformer is all at 750KV with more than the 750KV.The iron yoke end circle that is used for super extra-high voltage transformer is arranged on the coil of transformer and the insulating part between the lamination end circle; coil to transformer plays insulation protection; therefore; its insulation property are very large on the impact in useful life of transformer, guarantee that insulation property reach the requirement of withstand voltage of super extra-high voltage transformer.Existing iron yoke end circle typically uses that the insulating paper material makes, it comprises insulating board and the cross-over block of annular, directly bond together by glue between insulating board and the cross-over block, Main Function is to increase creepage distance, improve insulation property, insulating board generally includes multilayer, cushion block is arranged on the upper surface of insulating board, and the cushion block position disunity of each layer is when iron yoke end circle is subject to larger power, insulating board is stressed larger, may fracture.
Summary of the invention
The purpose of this utility model is each layer cross-over block position disunity for the existing iron yoke end circle for super extra-high voltage transformer described in the background technology, the problem of possibility fracture under the stress provides a kind of iron yoke end circle that is used for super extra-high voltage transformer that can solve foregoing problems.
The technical scheme that realizes the purpose of this utility model is as follows:
A kind of iron yoke end circle for super extra-high voltage transformer, it comprises insulating board and the cross-over block of two-layer at least annular, cross-over block is arranged on the upper surface of each annular insulating board, and distribute along the periphery of the insulating board of annular, cross-over block and insulating board combine by the bonding rear hot pressing of glue, the cross-over block quantity of each layer is identical, and the position that cross-over block arranges is unified mutually.
Have enough supporting roles in order to ensure 2 pairs of insulating boards 1 of cross-over block, prevent insulating board 1 fracture, 15 °～45 ° the central angle setting of being separated by between the described cross-over block 2.
Iron yoke end circle for super extra-high voltage transformer of the present utility model, the insulation cross-over block of each layer and insulating board are by the glue hot binding together, the problem that is not easy to come unglued, the cross-over block quantity of each layer is identical, setting position is unified mutually, as long as the reasonable quantity of cushion block, even just can guarantee iron yoke end circle under stress, insulating board also is not easy fracture.
Description of drawings
Fig. 1 is the structural representation that is used for the iron yoke end circle of super extra-high voltage transformer;
Fig. 2 is that A-A among Fig. 1 is to cutaway view;
Among the figure, 1 is insulating board, and 2 is cross-over block.
Embodiment
Below in conjunction with accompanying drawing 1 and Fig. 2 the utility model is carried out detailed illustrating:
Embodiment 1
A kind of iron yoke end circle for super extra-high voltage transformer as shown in Fig. 1 and Fig. 2, it comprises insulating board 1 and the cross-over block 2 of two-layer at least annular, cross-over block 2 is arranged on the upper surface of each annular insulating board 1, and distribute along the periphery of the insulating board 1 of annular, cross-over block 2 combines by the bonding rear hot pressing of glue with insulating board 1, cross-over block 2 quantity of each layer are identical, and the position that cross-over block 2 arranges is unified mutually.
Have enough supporting roles in order to ensure 2 pairs of insulating boards 1 of cross-over block, prevent insulating board 1 fracture, 15 °～45 ° the central angle setting of being separated by between the described cross-over block 2.
Claims (2)
1. iron yoke end circle that is used for super extra-high voltage transformer, it is characterized in that: it comprises insulating board and the cross-over block of two-layer at least annular, cross-over block is arranged on the upper surface of each annular insulating board, and distribute along the periphery of the insulating board of annular, cross-over block and insulating board combine by the bonding rear hot pressing of glue, the cross-over block quantity of each layer is identical, and the position that cross-over block arranges is unified mutually.
2. the iron yoke end circle for super extra-high voltage transformer according to claim 1 is characterized in that: 15 °～45 ° the central angle setting of being separated by between the described cross-over block (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603926 CN202905427U (en) | 2012-11-15 | 2012-11-15 | Iron yoke end ring for extra-high voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603926 CN202905427U (en) | 2012-11-15 | 2012-11-15 | Iron yoke end ring for extra-high voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202905427U true CN202905427U (en) | 2013-04-24 |
Family
ID=48126065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603926 Expired - Fee Related CN202905427U (en) | 2012-11-15 | 2012-11-15 | Iron yoke end ring for extra-high voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202905427U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632828A (en) * | 2013-12-14 | 2014-03-12 | 广东广特电气有限公司 | Manufacturing technology of on-load adjustable capacity transformer iron yoke insulating part |
| CN106373768A (en) * | 2016-11-11 | 2017-02-01 | 南京南瑞集团公司 | Method for manufacturing transformer yoke insulating part |
-
2012
- 2012-11-15 CN CN 201220603926 patent/CN202905427U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632828A (en) * | 2013-12-14 | 2014-03-12 | 广东广特电气有限公司 | Manufacturing technology of on-load adjustable capacity transformer iron yoke insulating part |
| CN106373768A (en) * | 2016-11-11 | 2017-02-01 | 南京南瑞集团公司 | Method for manufacturing transformer yoke insulating part |
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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 |
Granted publication date: 20130424 Termination date: 20181115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |