CN102903514A - End sealing process for multilayer foil coil of dry-type transformer - Google Patents
End sealing process for multilayer foil coil of dry-type transformer Download PDFInfo
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- CN102903514A CN102903514A CN2012104353978A CN201210435397A CN102903514A CN 102903514 A CN102903514 A CN 102903514A CN 2012104353978 A CN2012104353978 A CN 2012104353978A CN 201210435397 A CN201210435397 A CN 201210435397A CN 102903514 A CN102903514 A CN 102903514A
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Abstract
The invention discloses an end sealing process for a multilayer foil coil of a dry-type transformer. The process comprises the following steps of: curing a foil coil body at high temperature, proportioning by using epoxy resin, a curing agent and color paste, uniformly stirring, and adding silicon dioxide to form a resin mixture for end sealing of the foil coil body; uniformly sealing the resin mixture to the end face of the coil body by batch by using an end sealing blade; after the resin mixture is cured, grinding a rough part on the end face of the coil body by using sand paper; and coating a layer of mixture of the epoxy resin and the curing agent on the end face, and curing the mixture. By the end sealing of the foil coil of the dry-type transformer, the smoothness of coil ends is improved, a clearance between end insulating layers is eliminated, the coil can be quickly fixed during assembly, cannot shift due to vibration, and can be protected from invasion of dust and water, the whole mechanical strength and electrical strength of the transformer are improved, electric reliability is improved, and economic loss is reduced.
Description
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Technical field
The present invention relates to a kind of dry-type transformer multilayer foil coil end part seal technique, be applicable to the end part seal of dry-type transformer multilayer foil coil and the end part seal of similar structures product coil.
Background technology
When dry-type transformer coil adopts paper tinsel formula structure to produce, have adopt the preimpregnation composite material as layer insulation and overhang insulation directly through the hot setting moulding, also there is coil to adopt behind the whole dipping lacquer hot setting moulding again, these two kinds of produced overhangs of method are because the control deficiency of production process or the problem of material itself all can cause between end winding out-of-flatness and each layer of end gapped, press-fit not tight when causing assembling, will cause the movement of coil when transportation or transformer work, safe distance between coil is diminished, cause winding discharge burnout failure; After end winding was gapped, dust, moisture or some metallics will enter into the inside of coil, caused the dielectric strength of coil inside to descend, and also can cause coil burnout under the state of transformer work; Uneven and the gapped overall appearance quality that also affects transformer of overhang is not attractive in appearance.Treating end of coil substantially all was not the way that first end is polished or adopt the cushioning levelling with sanding machine when assembling at ordinary times in the past, be difficult to overcome the problem that the coil vibrations are mobile or built-in electrical insulation descends, bring very large potential safety hazard for the normal operation of transformer, problems can cause huge economic loss to enterprise and user.
Summary of the invention
Goal of the invention: for problems of the prior art and deficiency, the invention provides a kind of dry-type transformer multilayer foil coil end part seal technique, by dry transformer foil formula coil is carried out end part seal, improve the evenness of end winding, eliminate the gap of overhang insulation interlayer, and then mechanical strength and the electrical strength of transformer integral body have been improved, reduce the accident that transformer moves because of coil or the coil inside dielectric strength descends and causes, both guarantee user's electricity consumption reliability, and also can reduce the economic loss that manufacturing enterprise causes because of product quality defect.
Technical scheme: a kind of dry-type transformer multilayer foil coil end part seal technique may further comprise the steps:
The foil coil body is through behind the hot setting, carry out proportioning with UR383 epoxy resin and UH6616 curing agent and CPR017 mill base according to 1:0.5:0.4～0.6 ratio, stirring first adds the M10 silicon dioxide of 15%～40% amount again, forms the resin compound of foil coil body end sealing usefulness;
Then the resin compound of with end envelope instrument accent being mixed is evenly criticized envelope to the end face of coil body, makes the coil end face smooth, seamless;
After resin compound solidifies, with sand paper polished in the coarse position of the end face of coil body, make the coil end face more smooth smooth;
And then at end coating one deck UR38 epoxy resin of coil body and the diethylenetriamine curing agent compound according to 1:0.25～0.35 ratio, after material to be mixed solidified, foil coil just can enter into next general assembly operation.
Beneficial effect: compared with prior art, after dry transformer foil formula coil adopts end part seal technology of the present invention, just can solve the gapped problem of dry-type transformer coil end injustice and overhang insulation, just can very fast fixing in when assembling, can not should be the reasons such as vibrations and cause displacement, also can not be subject to the intrusion of dust, moisture, not only improve the presentation quality of product, and improved the product reliability of operation, reduce rate of failure, also reduced the economic loss that Accident of Transformer causes to enterprise.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention.
The foil coil body is through behind the hot setting, carry out proportioning with UR383 epoxy resin and UH6616 curing agent and CPR017 mill base in the 1:0.5:0.4 ratio, stirring first adds an amount of M10 silicon dioxide again, forms the resin compound of foil coil body end sealing usefulness;
Then the resin compound of with the end sealing blade accent being mixed is evenly criticized envelope to the end face of coil body, makes the coil end face smooth, seamless;
At normal temperature or under heating condition, after resin compound solidifies, with sand paper polished in the coarse position of the end face of coil body, make the coil end face more smooth smooth, irregularity degree is less than 1mm;
And then at end coating one deck UR383 epoxy resin of coil body and the diethylenetriamine curing agent compound according to 1:0.25～0.35 ratio, after material to be mixed solidified, foil coil just can enter into next general assembly operation.After end winding was processed through end part seal, coil just can very fast fixing when assembling, can not should be the reason such as vibrations and cause displacement, also can not be subject to the intrusion of dust, moisture.
The above only is preferred implementation of the present invention, should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvement, and these improvement also should be considered as protection scope of the present invention.
Claims (1)
1. a dry-type transformer multilayer foil coil end part seal technique is characterized in that, may further comprise the steps:
The foil coil body is through behind the hot setting, carry out proportioning with epoxy resin and UH6616 curing agent and mill base according to the ratio of 1:0.5:0.4～0.6, stirring first adds 15%～40% silicon dioxide again, forms the resin compound of foil coil body end sealing usefulness;
Then the resin compound of with the end sealing blade accent being mixed is evenly criticized envelope to the end face of coil body, makes the coil end face smooth, seamless;
, after solidifying after a while, with sand paper polished in the coarse position of the end face of coil body until resin compound;
And then at end coating one deck epoxy resin of coil body and the diethylenetriamine curing agent compound according to 1:0.25～0.35 ratio, after material to be mixed solidified, foil coil just can enter into next general assembly operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435397.8A CN102903514B (en) | 2012-11-05 | 2012-11-05 | End sealing process for multilayer foil coil of dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435397.8A CN102903514B (en) | 2012-11-05 | 2012-11-05 | End sealing process for multilayer foil coil of dry-type transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102903514A true CN102903514A (en) | 2013-01-30 |
| CN102903514B CN102903514B (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210435397.8A Active CN102903514B (en) | 2012-11-05 | 2012-11-05 | End sealing process for multilayer foil coil of dry-type transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102903514B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295771A (en) * | 2013-05-17 | 2013-09-11 | 宁波奥克斯高科技有限公司 | Method for manufacturing end seals of low-voltage foil coils of dry type transformers |
| CN104217851A (en) * | 2014-09-03 | 2014-12-17 | 宁波奥克斯高科技有限公司 | End sealing method for low-voltage foil type coil of dry type transformer |
| CN105931834A (en) * | 2016-06-07 | 2016-09-07 | 江苏宏源电气有限责任公司 | Coil coating method for oil-immersed transformer |
| CN106449077A (en) * | 2016-08-31 | 2017-02-22 | 芜湖金牛电气股份有限公司 | Manufacturing method of transformer coil |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2113541U (en) * | 1992-02-13 | 1992-08-19 | 崔立丽 | High pressure foil type coil without pouring together |
| JPH09260158A (en) * | 1996-03-27 | 1997-10-03 | Hitachi Ltd | Resin-molded coil |
| JP2003031434A (en) * | 2001-07-13 | 2003-01-31 | Tdk Corp | Method of manufacturing inductor chip component |
| JP2003347141A (en) * | 2002-05-27 | 2003-12-05 | Denso Corp | Method and device for molding resin into dust stator |
| CN1933066A (en) * | 2006-09-08 | 2007-03-21 | 中电电气集团有限公司 | Half-packaging high-voltage coil end sealing technology process |
| CN201332005Y (en) * | 2008-11-21 | 2009-10-21 | 沈阳福林特种变压器有限公司 | Combined dry-type transformer |
| CN202049848U (en) * | 2011-04-20 | 2011-11-23 | 广州骏发电气有限公司 | Low tension coil of dry type transformer with end part sealing compound |
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2012
- 2012-11-05 CN CN201210435397.8A patent/CN102903514B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2113541U (en) * | 1992-02-13 | 1992-08-19 | 崔立丽 | High pressure foil type coil without pouring together |
| JPH09260158A (en) * | 1996-03-27 | 1997-10-03 | Hitachi Ltd | Resin-molded coil |
| JP2003031434A (en) * | 2001-07-13 | 2003-01-31 | Tdk Corp | Method of manufacturing inductor chip component |
| JP2003347141A (en) * | 2002-05-27 | 2003-12-05 | Denso Corp | Method and device for molding resin into dust stator |
| CN1933066A (en) * | 2006-09-08 | 2007-03-21 | 中电电气集团有限公司 | Half-packaging high-voltage coil end sealing technology process |
| CN201332005Y (en) * | 2008-11-21 | 2009-10-21 | 沈阳福林特种变压器有限公司 | Combined dry-type transformer |
| CN202049848U (en) * | 2011-04-20 | 2011-11-23 | 广州骏发电气有限公司 | Low tension coil of dry type transformer with end part sealing compound |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295771A (en) * | 2013-05-17 | 2013-09-11 | 宁波奥克斯高科技有限公司 | Method for manufacturing end seals of low-voltage foil coils of dry type transformers |
| CN103295771B (en) * | 2013-05-17 | 2016-01-20 | 宁波奥克斯高科技有限公司 | A kind of dry-type transformer low voltage foil type coil end envelope manufacture method |
| CN104217851A (en) * | 2014-09-03 | 2014-12-17 | 宁波奥克斯高科技有限公司 | End sealing method for low-voltage foil type coil of dry type transformer |
| CN105931834A (en) * | 2016-06-07 | 2016-09-07 | 江苏宏源电气有限责任公司 | Coil coating method for oil-immersed transformer |
| CN106449077A (en) * | 2016-08-31 | 2017-02-22 | 芜湖金牛电气股份有限公司 | Manufacturing method of transformer coil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102903514B (en) | 2015-04-29 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20200529 Address after: 212200, No. 188, CLP Road, Yangzhong, Jiangsu, Zhenjiang Patentee after: CLP (Jiangsu) transformer technology Co.,Ltd. Address before: 212200, No. 188, CLP Road, Yangzhong, Jiangsu, Zhenjiang Patentee before: CEEG (JIANGSU) Co.,Ltd. |
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Effective date of registration: 20210910 Address after: 212200 Zhongdian Avenue, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee after: CEEG (JIANGSU) Co.,Ltd. Address before: No. 188, Zhongdian Avenue, Yangzhong City, Zhenjiang City, Jiangsu Province, 212200 Patentee before: CLP (Jiangsu) transformer technology Co.,Ltd. |
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Effective date of registration: 20220307 Address after: No. 188, Zhongdian Avenue, Yangzhong City, Zhenjiang City, Jiangsu Province, 212200 Patentee after: CLP (Jiangsu) transformer manufacturing Co.,Ltd. Address before: 212200 Zhongdian Avenue, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee before: CEEG (JIANGSU) Co.,Ltd. |