CN203338954U - Coil insulation structure of oil-immersed transformer - Google Patents
Coil insulation structure of oil-immersed transformer Download PDFInfo
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- CN203338954U CN203338954U CN2013204225448U CN201320422544U CN203338954U CN 203338954 U CN203338954 U CN 203338954U CN 2013204225448 U CN2013204225448 U CN 2013204225448U CN 201320422544 U CN201320422544 U CN 201320422544U CN 203338954 U CN203338954 U CN 203338954U
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Abstract
The utility model discloses a coil insulation structure of an oil-immersed transformer, and belongs to common parts of the transformer or an inductor. The coil insulation structure is particularly used for insulation of transformer coils, windings or parts of the transformer coils or the windings. The coil insulation structure of the oil-immersed transformer comprises a high voltage coil of the transformer and a low voltage coil of the transformer, and the high voltage coil is provided with an insulation partition board between phases. The coil insulation structure is characterized in that end portion insulation layers are arranged at the two ends of the high voltage coil, each end portion insulation layer is formed by two pieces of 0.8mm electric insulation crepe paper and two 1.5mm transformer insulating paperboards in a combined mode, an insulation layer between the high voltage coil and the low voltage coil is arranged between the high voltage coil and the low voltage coil, and the insulation layer between the high voltage coil and the low voltage coil is composed of two pieces of 0.8mm electric insulation crepe paper, fifteen pieces of 0.08mm insulation rhombus grid paper and twelve pieces of 0.1mm DMD gummed paper. The coil insulation structure has the advantages of being capable of improving the insulation level, bringing convenience to process operation, saving the materials, optimizing the design, and being simple and compact in structure and more reasonable.
Description
Technical field
The utility model belongs to the insulation of general parts, particularly transformer coil, winding or its parts of transformer or inductor.
Background technology
At present, standard GB/T 1094 requires: in the exfactory inspection of 10kV oil-filled transformer, and between high pressure and low pressure, between high pressure and ground, must have insulation, and will be through the power frequency withstand test of 1min at least.General producer passes through to strengthen the modes such as insulation distance, interpolation insulating transformer insulating board in design, the increasing of insulation distance has wasted transformer material, increase again no-load loss Restriction Design level, and it is often insecure to add transformer insulated cardboard, and the useful life of the transformer that fixedly do not had a strong impact on of point of addition.The existing structure design level is low, has increased iron core weight, and waste iron core, wire rod, transformer wet goods, improved cost.
The utility model content
In order to overcome in prior art by strengthening the modes such as insulation distance, interpolation insulating transformer insulating board, increased iron core weight, the deficiency of waste iron core, wire rod, transformer wet goods, the utility model provides a kind of oil-filled transformer coil insulation structure, this oil-filled transformer coil insulation structure can not only improve insulation level, and saves material.
The utility model solves the technical scheme that its technical problem adopts: a kind of oil-filled transformer coil insulation structure, the high-tension coil and the low-voltage coil that comprise transformer, high-tension coil is provided with interphase insulating baffle plate, it is characterized in that: be provided with the overhang insulation layer at the high-tension coil two ends, be provided with insulating barrier between high-voltage coil and low-voltage coil between high-tension coil and low-voltage coil.
Described overhang insulation layer is by 2 of 0.8mm electric insulation crimped papers, and 2 of 1.5mm insulating boards combine, and 0.8mm electric insulation crimped paper is positioned at the internal layer near coil.
Between described high-voltage coil and low-voltage coil, insulating barrier is by 2 of 0.8mm electric insulation crimped papers, 0.08mm 15 of insulation water chestnut ruled papers, 0.1mmDMD 12 compositions of sized paper, 0.8mm electric insulation crimped paper is positioned near high-tension coil one side and then is followed successively by 0.08mm insulation water chestnut ruled paper, 0.1mmDMD sized paper.
Described 0.8mm electric insulation crimped paper folding is half square shape, is convenient to simultaneously for insulating barrier between overhang insulation layer and high-voltage coil and low-voltage coil, and the transformer insulated cardboard folding of described 1.5mm is half square shape, is convenient to simultaneously for overhang insulation layer and interphase insulating baffle plate.
The beneficial effects of the utility model are, can be when improving insulation level, and technological operation is convenient, saves material, optimal design.Simple and compact for structure, more reasonable.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model,
In figure, 1. electric insulation crimped paper, 2. interphase insulating baffle plate, 3. overhang insulation cardboard, 4. insulation water chestnut ruled paper, 5.DMD sized paper, 6. low-voltage coil, 7. high-tension coil.
Embodiment
Embodiment of the present utility model is, as shown in the figure:
Described overhang insulation layer is by 2 of 0.8mm electric insulation crimped papers, and 2 of 1.5mm insulating boards combine, and 0.8mm electric insulation crimped paper is positioned at the internal layer near coil.
Between described high-voltage coil and low-voltage coil, insulating barrier is by 2 of 0.8mm electric insulation crimped papers, 0.08mm 15 of insulation water chestnut ruled papers, 0.1mmDMD 12 compositions of sized paper, 0.8mm electric insulation crimped paper is positioned near high-tension coil one side and then is followed successively by 0.08mm insulation water chestnut ruled paper, 0.1mmDMD sized paper.
This insulation system overhang insulation layer thickness 5mm, thickness of insulating layer 4mm between high-low pressure.Each insulation system completes in coil winding, and compact conformation reaches the purpose that improves insulation, saves material.
Described overhang insulation layer is by 2 of 0.8mm electric insulation crimped papers, and 2 of 1.5mm insulating boards combine, and 0.8mm electric insulation crimped paper is positioned at the internal layer near coil.
Between described high-voltage coil and low-voltage coil, insulating barrier is by 2 of 0.8mm electric insulation crimped papers, 0.08mm 15 of insulation water chestnut ruled papers, 0.1mmDMD 12 compositions of sized paper, 0.8mm electric insulation crimped paper is positioned near high-tension coil one side and then is followed successively by 0.08mm insulation water chestnut ruled paper, 0.1mmDMD sized paper.
This overhang insulation layer consists of 2 0.8 electric insulation crimped papers, 2 transformer insulated cardboards, increases the end creepage distance, and that this mode can be applied to is single-phase, three equate multiple double-winding structures.
In laminar winding technique process, 2 0.8mm electric insulation crimped papers of coiling after the high-low pressure main empty path, to put into folding be the transformer insulated cardboard of 1.5mm of half square shape alternate, simultaneously for overhang insulation layer and interphase insulating baffle plate, adds a transformer insulated cardboard in end.
Described 0.8mm electric insulation crimped paper folding is half square shape, is convenient to simultaneously for insulating barrier between overhang insulation layer and high-voltage coil and low-voltage coil.
Claims (4)
1. an oil-filled transformer coil insulation structure, the high-tension coil and the low-voltage coil that comprise transformer, high-tension coil is provided with interphase insulating baffle plate, it is characterized in that: be provided with the overhang insulation layer at the high-tension coil two ends, be provided with insulating barrier between high-voltage coil and low-voltage coil between high-tension coil and low-voltage coil.
2. oil-filled transformer coil insulation structure according to claim 1, it is characterized in that: described overhang insulation layer is by 2 of 0.8mm electric insulation crimped papers, 1.5mm 2 of transformer insulated cardboards combine, 0.8mm electric insulation crimped paper is positioned at the internal layer near coil.
3. oil-filled transformer coil insulation structure according to claim 1, it is characterized in that: between described high-voltage coil and low-voltage coil, insulating barrier is by 2 of 0.8mm electric insulation crimped papers, 0.08mm 15 of insulation water chestnut ruled papers, 0.1mmDMD 12 compositions of sized paper, 0.8mm electric insulation crimped paper is positioned near high-tension coil one side and then is followed successively by 0.08mm insulation water chestnut ruled paper, 0.1mmDMD sized paper.
4. oil-filled transformer coil insulation structure according to claim 2, it is characterized in that: described 0.8mm electric insulation crimped paper folding is half square shape, be convenient to simultaneously for insulating barrier between overhang insulation layer and high-voltage coil and low-voltage coil, the transformer insulated cardboard folding of described 1.5mm is half square shape, is convenient to simultaneously for overhang insulation layer and interphase insulating baffle plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204225448U CN203338954U (en) | 2013-07-16 | 2013-07-16 | Coil insulation structure of oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204225448U CN203338954U (en) | 2013-07-16 | 2013-07-16 | Coil insulation structure of oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203338954U true CN203338954U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204225448U Expired - Fee Related CN203338954U (en) | 2013-07-16 | 2013-07-16 | Coil insulation structure of oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203338954U (en) |
Cited By (2)
| 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 |
| CN105261463A (en) * | 2015-11-20 | 2016-01-20 | 济南清河电气有限公司 | Oil-immersed type transformer coil |
-
2013
- 2013-07-16 CN CN2013204225448U patent/CN203338954U/en not_active Expired - Fee Related
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 |
| 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 |
| 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 |
Granted publication date: 20131211 Termination date: 20210716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |