CN101692408B - Method for hybrid major insulation of oil immersed transformer - Google Patents
Method for hybrid major insulation of oil immersed transformer Download PDFInfo
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- CN101692408B CN101692408B CN2009103073624A CN200910307362A CN101692408B CN 101692408 B CN101692408 B CN 101692408B CN 2009103073624 A CN2009103073624 A CN 2009103073624A CN 200910307362 A CN200910307362 A CN 200910307362A CN 101692408 B CN101692408 B CN 101692408B
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Abstract
The invention relates to a method for hybrid major insulation of an oil immersed transformer and belongs to the technical field of transformer manufacturing. The invention adopts a technical scheme that: after a low-voltage winding (2) is wound, a strut (3) is placed on the surface first; an insulating paper board (4) and diamond dotted paper (5) are alternately wound on the surface of the strut (3) to form hybrid insulation; another strut is placed, a high-voltage winding (5) is continuously wound, and after the winding is finished, the high-voltage winding and the hybrid major insulation form an integrated winding. The method has the advantages that: as different insulating materials are adopted to form hybrid insulation, the insulation strength is improved, the electric field intensity of the major insulation is improved, and the size of a major empty channel between the high and low voltage windings is reduced; the product structure is more compact, the volume is small, and the material cost of the transformer is reduced; and in the assembly process of the transformer, the high and low voltage windings can be directly and integrally sleeved on an iron core limb, the mounting steps are reduced and the working efficiency is proved.
Description
Affiliated technical field:
The present invention relates to a kind of mix insulation method of oil-immersed type transformer main insulation, belong to technical field of transformer manufacturing.
Background technology:
Main insulation between the oil-filled transformer high-low pressure winding normally is made up of insulating board and oil clearance, mainly contain two kinds of structures at present, first kind is the traditional structure that the oil clearance of main empty path is divided into two by a ground paper tube, and second kind is the structure that the oil clearance of main empty path is divided into a plurality of small oil gaps by a plurality of thin paper tubes.Wherein the transformer main empty path of low-voltage grade is smaller, generally adopts first kind of Main Insulation Structure of Electric; The transformer main empty path of voltage levels is bigger, adopts second kind of Main Insulation Structure of Electric, can reduce electric field strength, dwindles the main empty path distance.The above transformer of 35kV generally adopts thin paper tube small oil gap structure at present, since thin paper tube small oil gap structure need placement of multiple layers be surrounded by insulating board between the high-low pressure winding paper web, and it is spaced apart with stay, cause the main insulation width of cloth bigger than normal to size, influence the suit of high pressure winding, need artificial nargin of amplifying suit during design, increased the transformer cost; In addition, complex process, inefficiency.
Summary of the invention:
The object of the invention provides a kind of mix insulation method of oil-immersed type transformer main insulation, reduced the distance between the transformer high-low pressure winding, both reduce the transformer material cost, and improved operating efficiency again and reduced cost, solved the problems referred to above that exist in the background technology.
The present invention seeks to be achieved through the following technical solutions.
A kind of mix insulation method of oil-immersed type transformer main insulation comprises following steps:
Place stay earlier low pressure winding table kept man of a noblewoman, secondly insulating board and some gummed paper alternately are wrapped in stay surface formation mix insulation, and then place other stay, continuous again coiling high pressure winding, after coiling was finished, the mix insulation of high-low pressure winding and main insulation had formed the winding of an integral body.
In the assembling process of transformer, the high-low pressure winding directly integral assembling on iron core column.
Technical essential of the present invention is: after the low pressure winding technique is finished, at first place stay on its surface; Insulating board and some gummed paper alternately are wrapped in stay surface formation mix insulation; Other stay is placed on the insulating board and some gummed paper surface that coiling is finished; The high pressure winding is wound on this stay surface continuously; After the high pressure winding technique finished, just form whole winding.
Beneficial effect of the present invention is: constitute mix insulation by adopting the different insulative material, improved dielectric strength, improved the electric field strength of main insulation; Because mix insulation has improved the dielectric strength of main empty path, therefore can dwindle main empty path size between the high-low pressure winding; Because the main empty path size is dwindled between the high-low pressure winding, product structure is compact more, and smaller volume has reduced the material cost of transformer; Because the high-low pressure winding has formed an integral body in winding process, having saved in the past needs earlier the low pressure winding to be sleeved on the core limb in the transformer cover process of assembling, twine insulating board as main insulation on low pressure winding surface then, again the high pressure winding is sleeved on outermost troublesome operation step, simplify the suit step, improved operating efficiency.
Description of drawings:
Fig. 1 is an embodiment of the invention structural representation;
The vertical view of Fig. 2 Fig. 1.
Among the figure: 1 iron core, 2 low pressure windings, 3 stays, 4 insulating boards, 5 gummed papers, 6 high pressure windings.
Embodiment:
Below in conjunction with accompanying drawing, the invention will be further described by embodiment.
In an embodiment, after low pressure winding 2 was finished in coiling, stay 3 was at first placed on the surface, secondly insulating board 4 and some gummed paper 5 alternately was wrapped in stay 3 surface formation mix insulations, the thickness of edge cardboard 4 and some gummed paper 5 and ratio are determined on demand according to actual conditions; And then place other stay, continuous again coiling high pressure winding 6, after coiling was finished, the mix insulation of high-low pressure winding and main insulation had formed the winding of an integral body, in the assembling process of transformer, the high-low pressure winding directly integral assembling on iron core 1 post.Having saved in the past needs earlier the low pressure winding to be sleeved on the core limb in the transformer cover process of assembling, twines insulating board as main insulation on low pressure winding surface then, the high pressure winding is sleeved on outermost troublesome operation step again, has improved operating efficiency.
Claims (1)
1. the mix insulation method of an oil-immersed type transformer main insulation, it is characterized in that comprising following steps: after low pressure winding (2) is finished in coiling, stay (3) is at first placed on the surface, secondly insulating board (4) and some gummed paper (5) alternately are wrapped in stay (3) surface formation mix insulation, and then place other stay, continuous again coiling high pressure winding (6), the high pressure winding is wound on this stay surface continuously, after coiling was finished, high-low pressure winding and mix insulation had formed the winding of an integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103073624A CN101692408B (en) | 2009-09-21 | 2009-09-21 | Method for hybrid major insulation of oil immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103073624A CN101692408B (en) | 2009-09-21 | 2009-09-21 | Method for hybrid major insulation of oil immersed transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101692408A CN101692408A (en) | 2010-04-07 |
| CN101692408B true CN101692408B (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103073624A Active CN101692408B (en) | 2009-09-21 | 2009-09-21 | Method for hybrid major insulation of oil immersed transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN101692408B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568772B (en) * | 2010-12-27 | 2015-02-18 | 新华都特种电气股份有限公司 | Co-wound high-voltage and low-voltage coil of transformer and winding method of co-wound high-voltage and low-voltage coil |
| CN102568784A (en) * | 2012-03-02 | 2012-07-11 | 海南威特电气集团有限公司 | Energy-saving transformer with compact structure |
| CN103050271A (en) * | 2012-12-20 | 2013-04-17 | 安徽神虹变压器有限公司 | Method for assembling coil of amorphous alloy distribution transformer |
| CN107026006B (en) * | 2017-05-12 | 2019-06-14 | 山东驰翔电气有限公司 | A kind of oil-immersed transformer high-voltage coils and its winding method |
| CN111899967B (en) * | 2020-08-25 | 2022-09-23 | 保定天威保变电气股份有限公司 | Oil sealing method and structure for improving temperature rise of high-capacity high-voltage converter transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2583780Y (en) * | 2002-10-01 | 2003-10-29 | 特变电工衡阳变压器有限公司 | Insulating structure between high, low voltage layer type windings |
| CN201117329Y (en) * | 2007-08-19 | 2008-09-17 | 江苏亨通金天电子线缆有限公司 | Highly abrasion-resistant double layer insulated portable type automobile electrical wire |
| CN201178018Y (en) * | 2008-02-21 | 2009-01-07 | 株洲南车电机股份有限公司 | Integrated transformer coil of multiple windings |
| CN201307500Y (en) * | 2008-07-31 | 2009-09-09 | 孔明放 | Insulation device of dry-type transformer coil |
-
2009
- 2009-09-21 CN CN2009103073624A patent/CN101692408B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2583780Y (en) * | 2002-10-01 | 2003-10-29 | 特变电工衡阳变压器有限公司 | Insulating structure between high, low voltage layer type windings |
| CN201117329Y (en) * | 2007-08-19 | 2008-09-17 | 江苏亨通金天电子线缆有限公司 | Highly abrasion-resistant double layer insulated portable type automobile electrical wire |
| CN201178018Y (en) * | 2008-02-21 | 2009-01-07 | 株洲南车电机股份有限公司 | Integrated transformer coil of multiple windings |
| CN201307500Y (en) * | 2008-07-31 | 2009-09-09 | 孔明放 | Insulation device of dry-type transformer coil |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2009-170449A 2009.07.30 |
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| CN101692408A (en) | 2010-04-07 |
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Owner name: BAODING TIANWEI BAOBIAN ELECTRIC CO., LTD. Free format text: FORMER OWNER: BAODING TIANWEI GROUP CO., LTD. Effective date: 20131115 |
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Effective date of registration: 20131115 Address after: 071056 West Road, Hebei, Baoding, No. 2222, No. Patentee after: Baoding Tianwei Baobian Electric Co., Ltd. Patentee after: Baoding Tianwei Shunda Transformer Co., Ltd. Address before: 071051, Hebei City, Baoding province ginkgo Road, No. 198 Jin Di garden complex Patentee before: Baoding Tianwei Group Co., Ltd. Patentee before: Baoding Tianwei Shunda Transformer Co., Ltd. |