CN203826184U - Main insulation structure of oil-immersed transformer - Google Patents
Main insulation structure of oil-immersed transformer Download PDFInfo
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- CN203826184U CN203826184U CN201420255325.XU CN201420255325U CN203826184U CN 203826184 U CN203826184 U CN 203826184U CN 201420255325 U CN201420255325 U CN 201420255325U CN 203826184 U CN203826184 U CN 203826184U
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- voltage coil
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- paper
- main insulation
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Abstract
The utility model discloses a main insulation structure of an oil-immersed transformer. The outer side of a low-voltage coil is covered with a cable paper layer, and the outer side of the cable paper layer is covered with an insulation paper board playing a role in fixing and enhancing the insulation effect; the outer side of the insulation paper board is covered with crepe paper and form a flexible angle ring; the two ends of the flexible angle ring are turned and flattened towards the side where a high-voltage coil is located and pressed in the upper end face and the lower end face of a partition board respectively; upper insulating padding boards are arranged between an upper clamping part and the upper end of the lower-voltage coil and between the upper clamping part and the upper end of the high-voltage coil, and lower insulating padding boards are arranged between a lower clamping part and the lower end of the low-voltage coil and between the clamping part and the lower end of the high-voltage coil. The main insulation structure is reliable, reasonable, low in cost and convenient to machine and manufacture and completely meets the requirements for modern large-scale and intensive production.
Description
Technical field
The utility model belongs to transformer manufacture technology, relates to a kind of main insulation structure of oil immersed transformer.
Background technology
10kV oil immersion-type distribution transformer Main Insulation Structure of Electric is generally, and adopts corrugated oil duct or curtain formula oil duct between high-low pressure, between coil and Double layer iron yoke unshakable in one's determination, adopts core insulation, and alternate employing phase partition insulate.The advantage of this structure is reliable, and shortcoming is that processing parts is more, and will be by existing test testing requirement, just must ensure enough insulation distances, and the material needing is many, and cost is high.
Summary of the invention
The problem existing in order to overcome prior art, the purpose of this utility model is to provide a kind of main insulation structure of oil immersed transformer, this reliable in structure, rationally, and main material cost approximately 6% left and right that declined; Processing is convenient, has adapted to the demand of modern extensive, intensive production completely.
The purpose of this utility model is achieved through the following technical solutions:
A kind of main insulation structure of oil immersed transformer, comprises low-voltage coil, high-tension coil, upper clamping piece, lower clamping piece and iron core, it is characterized in that: at the coated cable ply of paper in low-voltage coil outside, be coated the insulating board of fixing reinforced insulation effect in cable ply of paper outside; Wrap up crimped paper and form soft corner-ring in insulating board outside; The two ends of soft corner-ring flatten to the upset of high-tension coil side, and are pressed in the upper and lower end face of dividing plate; Upper clamping piece and low-voltage coil around and the upper end of high-tension coil between be provided with insulating pad, between lower clamping piece and low-voltage coil and the lower end of high-tension coil, be provided with lower insulating pad.
In the utility model, described cable ply of paper is made up of 12 0.08mm cable papers.Described insulating board is one deck, thick 0.5mm.Described crimped paper is 2, thick 0.8mm.Upper insulating pad and lower insulating pad are bonded on the cardboard that 2mm is thick and are formed by the wide paperboard strip of 10mm.
A kind of manufacture method of main insulation structure of oil immersed transformer is: after low-voltage coil coiling completes, 12 0.08mm cable papers of outsourcing, then wrap one deck 0.5mm heavy insulation cardboard and play fixing reinforced insulation effect, finally wrap up 2 thick crimped papers of 0.8mm that grow the every limit 20mm of coil height; Coiling high-tension coil; Suit, is put in lower insulating pad on lower clamping piece, is inserted in high-tension coil, low-voltage coil, now will grow coil height part crimped paper and flatten toward the upset of high-tension coil side, forms soft corner-ring; After three groups of mounting coils complete, insert the phase partition of shaped as frame, soft corner-ring position is pressed in the upper and lower end face of dividing plate; Plug iron core, insulating pad in placement, loads onto folder, draws screw rod, and folder screw rod, completes assembling.
The core of this structure is: between high-voltage coil and low-voltage coil, add soft corner-ring by cable paper and form, realized the infiltration of transformer oil by the texture of crimped paper, realized small oil gap structure, ensured the dielectric strength between coil; By being used in conjunction with of soft corner-ring and shaped as frame phase partition, making has enough electrical strengths between end winding and upper and lower iron core, has ensured the reliability of withstand voltage test, has greatly dwindled needed electric insulation distance in original structure simultaneously; By the use of upper and lower insulating pad, cancel the cushion block in original structure, insulating pad is easy to process and can rationally utilize tailing, has saved widely raw-material use.
The utility model reliable in structure, rationally, and main material cost approximately 6% left and right that declined; Processing is convenient, has adapted to the demand of modern extensive, intensive production completely.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is schematic side view of the present utility model.
Embodiment
A kind of main insulation structure of oil immersed transformer, see Fig. 1 and Fig. 2, this Main Insulation Structure of Electric comprises low-voltage coil 1, high-tension coil 2, upper clamping piece 3, lower clamping piece 4 and iron core 5, is coated cable ply of paper 11 at low-voltage coil around outside, and cable ply of paper is made up of 12 0.08mm cable papers.The insulating board 12 that has been coated fixing reinforced insulation effect in cable ply of paper outside, insulating board is one deck, thick 0.5mm.Wrap up crimped paper and form soft corner-ring 13 in insulating board outside; Crimped paper is 2, thick 0.8mm.The two ends of soft corner-ring flatten to the upset of high-tension coil side, and are pressed in the upper and lower end face of dividing plate 6; Upper clamping piece and low-voltage coil around and the upper end of high-tension coil between be provided with insulating pad 7, lower clamping piece and low-voltage coil around and the lower end of high-tension coil between be provided with lower insulating pad 8.Upper insulating pad and lower insulating pad are bonded on the cardboard that 2mm is thick and are formed by the wide paperboard strip of 10mm.
The manufacture method of this Main Insulation Structure of Electric is as follows:
After low-voltage coil coiling completes, 12 0.08mm cables of outsourcing are opened, and then wrap one deck 0.5mm heavy insulation cardboard and play fixing reinforced insulation effect, finally wrap up 2 thick crimped papers of 0.8mm that grow the every limit 20mm of coil height, play soft corner-ring effect, last coiling high-tension coil.
When suit, first lower insulating pad is put on lower clamping piece, is inserted in high-voltage coil and low-voltage coil, now need to flatten toward the upset of high-tension coil side growing coil height part soft corner-ring.After three groups of mounting coils complete, insert the phase partition of shaped as frame, soft corner-ring position is pressed in the upper and lower end face of dividing plate.
Then insert upper yoke, insulating pad in placement.Finally load onto folder, draw screw rod, folder screw rod is to complete assembling.
Claims (5)
1. a main insulation structure of oil immersed transformer, comprise low-voltage coil (1), high-tension coil (2), upper clamping piece (3), lower clamping piece (4) and iron core (5), it is characterized in that: at the coated cable ply of paper (11) in low-voltage coil (1) outside, be coated the insulating board (12) of fixing reinforced insulation effect in cable ply of paper (11) outside; Wrap up crimped paper and form soft corner-ring (13) in insulating board (12) outside; The two ends of soft corner-ring (13) flatten to the upset of high-tension coil (2) side, and are pressed in the upper and lower end face of dividing plate (6); Between upper clamping piece (3) and low-voltage coil (1) and the upper end of high-tension coil (2), be provided with upper insulating pad (7), between lower clamping piece (4) and low-voltage coil (1) and the lower end of high-tension coil (2), be provided with lower insulating pad (8).
2. main insulation structure of oil immersed transformer according to claim 1, is characterized in that: described cable ply of paper (11) is made up of 12 0.08mm cable papers.
3. main insulation structure of oil immersed transformer according to claim 1, is characterized in that: described insulating board (12) is one deck, thick 0.5mm.
4. main insulation structure of oil immersed transformer according to claim 1, is characterized in that: described crimped paper is 2, thick 0.8mm.
5. main insulation structure of oil immersed transformer according to claim 1, is characterized in that: upper insulating pad (7) and lower insulating pad (8) are bonded on the cardboard that 2mm is thick and are formed by the wide paperboard strip of 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255325.XU CN203826184U (en) | 2014-05-19 | 2014-05-19 | Main insulation structure of oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255325.XU CN203826184U (en) | 2014-05-19 | 2014-05-19 | Main insulation structure of oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826184U true CN203826184U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420255325.XU Expired - Fee Related CN203826184U (en) | 2014-05-19 | 2014-05-19 | Main insulation structure of oil-immersed transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203826184U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971907A (en) * | 2014-05-19 | 2014-08-06 | 镇江天力变压器有限公司 | Main insulation structure of oil-immersed transformer and manufacturing method of main insulation structure |
| CN105140025A (en) * | 2015-09-28 | 2015-12-09 | 天津康利源电气材料制造有限公司 | Novel oil-immersed transformer-end insulation structure |
| CN105261463A (en) * | 2015-11-20 | 2016-01-20 | 济南清河电气有限公司 | Oil-immersed type transformer coil |
-
2014
- 2014-05-19 CN CN201420255325.XU patent/CN203826184U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971907A (en) * | 2014-05-19 | 2014-08-06 | 镇江天力变压器有限公司 | Main insulation structure of oil-immersed transformer and manufacturing method of main insulation structure |
| CN103971907B (en) * | 2014-05-19 | 2016-07-13 | 镇江天力变压器有限公司 | A kind of main insulation structure of oil immersed transformer and manufacture method thereof |
| CN105140025A (en) * | 2015-09-28 | 2015-12-09 | 天津康利源电气材料制造有限公司 | Novel oil-immersed transformer-end insulation structure |
| CN105261463A (en) * | 2015-11-20 | 2016-01-20 | 济南清河电气有限公司 | Oil-immersed type transformer coil |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20180519 |