CN102982981A - Epoxy resin insulating transformer - Google Patents
Epoxy resin insulating transformer Download PDFInfo
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- CN102982981A CN102982981A CN201210508819XA CN201210508819A CN102982981A CN 102982981 A CN102982981 A CN 102982981A CN 201210508819X A CN201210508819X A CN 201210508819XA CN 201210508819 A CN201210508819 A CN 201210508819A CN 102982981 A CN102982981 A CN 102982981A
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- epoxy resins
- epoxy resin
- resins insulation
- voltage coil
- curing agent
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Abstract
The invention relates to the technical field of electric equipment transformers, in particular to an epoxy resin insulating transformer, which comprises a high-voltage coil and a low-voltage coil arranged coaxially, wherein the high-voltage coil is arranged on the outer side of the low-voltage coil; an epoxy resin insulating layer formed by pouring is formed between the high-voltage coil and the low-voltage coil; and the epoxy resin insulating layer comprises epoxy resin, a filling agent, a curing agent and a toughening agent. Due to the adoption of the formula, the epoxy resin insulating transformer has high heat resistance and high toughness during running, and can run under overload for a long time. Meanwhile, an annular radiating channel is formed in the epoxy resin insulating layer, so that the radiating effect is enhanced, and safety and reliability are realized.
Description
Technical field
The present invention relates to power equipment transformer technology field, be specifically related to a kind of epoxy resins insulation transformer.
Background technology
In the prior art, a kind of dry-type transformer that forms with poured with epoxy resin is arranged, the high-tension coil and the low-voltage coil that comprise concentric setting, described high-tension coil and low-voltage coil integral body are cast in the epoxy resin, and epoxy resin fills up the gap between high-tension coil and the low-voltage coil.Its weak point is: one, because the coefficient of expansion of epoxy resin itself and the coefficient of expansion of coil copper conductor are discrepant, when temperature rises, can produce larger internal stress between the two, cause easily epoxy resin cracking, distortion, affect the dependability of transformer; Its two, the fragility of epoxy resin is large, shock-resistant damage ability, heat resistance is also relatively relatively poor, be generally less than 170 ℃, and when transformer overload was worked, caloric value was larger, temperature is also higher, the heat conductivility of epoxy resin itself is ungood, and therefore, the radiating effect of existing Cast Resin Dry-Type Transformer compares relatively poor, therefore, limited the ability of transformer overload operation.
Summary of the invention
The purpose of this invention is to provide that a kind of safe and reliable to operation, anti-overload ability is strong, the epoxy resins insulation transformer of good heat dissipation effect.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: a kind of epoxy resins insulation transformer, the high-tension coil and the low-voltage coil that comprise coaxial setting, described high-tension coil is located at the outside of described low-voltage coil, be provided with the epoxy resins insulation layer that cast forms between described high-tension coil and the low-voltage coil, the component of described epoxy resins insulation layer and proportioning are:
Epoxy resin 30～50 weight portions;
Curing agent 10～20 weight portions;
Flexibilizer 5～10 weight portions;
All the other are filler.
Further, described filler comprises silica flour, aluminium oxide, aluminium powder, talcum powder, diamond dust and mica powder.
Further, described curing agent is methyl tetrahydro phthalic anhydride curing agent or methyl hexahydrophthalic anhydride curing agent.
Further, described flexibilizer is asbestos fibre or glass fibre.
Further, be provided with the ring-type heat dissipation channel in the described epoxy resins insulation layer.
The present invention has following beneficial effect: a kind of epoxy resins insulation transformer of the present invention, owing between described high-tension coil and low-voltage coil, be provided with the epoxy resins insulation layer that cast forms, and the component of epoxy resins insulation layer comprises epoxy resin, filler, curing agent and flexibilizer, wherein, filler comprises silica flour, aluminium oxide, aluminium powder, talcum powder, diamond dust and mica powder, thereby can improve hardness of the present invention, increase bonding force, increase heat conduction, conductance, raising wear resistence and lubrification, increase insulating properties etc.; Because curing agent is methyl tetrahydro phthalic anhydride curing agent or methyl hexahydrophthalic anhydride curing agent, but thereby the effect of reinforced epoxy solidified forming; Flexibilizer is asbestos fibre or glass fibre, have effects such as increasing toughness, resistance to impact, thereby adopt above-mentioned prescription so that the present invention when operation, good heat resistance, good toughness, can for a long time operation under overload.Simultaneously, the present invention is provided with the ring-type heat dissipation channel in the epoxy resins insulation layer, increases radiating effect, and is safe and reliable.In addition, the present invention have non-maintaining, humidity resistance good, loss is low, the reliability high.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
Embodiment one:
As shown in Figure 1, a kind of epoxy resins insulation transformer of the present invention, the high-tension coil 1 and the low-voltage coil 2 that comprise coaxial setting, described high-tension coil 1 is located at the outside of described low-voltage coil 2, be provided with the epoxy resins insulation layer 3 that cast forms between described high-tension coil 1 and the low-voltage coil 2, the component of described epoxy resins insulation layer 3 and proportioning are:
Epoxy resin 40 weight portions;
Curing agent 20 weight portions;
Flexibilizer 10 weight portions;
All the other are filler.
Described filler comprises silica flour, aluminium oxide, aluminium powder, talcum powder, diamond dust and mica powder.
Described curing agent is methyl tetrahydro phthalic anhydride curing agent or methyl hexahydrophthalic anhydride curing agent.
Described flexibilizer is asbestos fibre or glass fibre.
Be provided with ring-type heat dissipation channel 4 in the described epoxy resins insulation layer 3.
Embodiment two:
As shown in Figure 1, a kind of epoxy resins insulation transformer of the present invention, the high-tension coil 1 and the low-voltage coil 2 that comprise coaxial setting, described high-tension coil 1 is located at the outside of described low-voltage coil 2, be provided with the epoxy resins insulation layer 3 that cast forms between described high-tension coil 1 and the low-voltage coil 2, the component of described epoxy resins insulation layer 3 and proportioning are:
Epoxy resin 50 weight portions;
Curing agent 10 weight portions;
Flexibilizer 5 weight portions;
All the other are filler.
Described filler comprises silica flour, aluminium oxide, aluminium powder, talcum powder, diamond dust and mica powder.
Described curing agent is methyl tetrahydro phthalic anhydride curing agent or methyl hexahydrophthalic anhydride curing agent.
Described flexibilizer is asbestos fibre or glass fibre.
Be provided with ring-type heat dissipation channel 4 in the described epoxy resins insulation layer 3.
Embodiment three:
As shown in Figure 1, a kind of epoxy resins insulation transformer of the present invention, the high-tension coil 1 and the low-voltage coil 2 that comprise coaxial setting, described high-tension coil 1 is located at the outside of described low-voltage coil 2, be provided with the epoxy resins insulation layer 3 that cast forms between described high-tension coil 1 and the low-voltage coil 2, the component of described epoxy resins insulation layer 3 and proportioning are:
Epoxy resin 30 weight portions;
Curing agent 18 weight portions;
Flexibilizer 9 weight portions;
All the other are filler.
Described filler comprises silica flour, aluminium oxide, aluminium powder, talcum powder, diamond dust and mica powder.
Described curing agent is methyl tetrahydro phthalic anhydride curing agent or methyl hexahydrophthalic anhydride curing agent.
Described flexibilizer is asbestos fibre or glass fibre.
Be provided with ring-type heat dissipation channel 4 in the described epoxy resins insulation layer 3.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, only otherwise break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. epoxy resins insulation transformer, the high-tension coil (1) and the low-voltage coil (2) that comprise coaxial setting, described high-tension coil (1) is located at the outside of described low-voltage coil (2), it is characterized in that, be provided with the epoxy resins insulation layer (3) that cast forms between described high-tension coil (1) and the low-voltage coil (2), component and the proportioning of described epoxy resins insulation layer (3) are:
Epoxy resin 30～50 weight portions;
Curing agent 10～20 weight portions;
Flexibilizer 5～10 weight portions;
All the other are filler.
2. a kind of epoxy resins insulation transformer according to claim 1 is characterized in that described filler comprises silica flour, aluminium oxide, aluminium powder, talcum powder, diamond dust and mica powder.
3. a kind of epoxy resins insulation transformer according to claim 1 is characterized in that, described curing agent is methyl tetrahydro phthalic anhydride curing agent or methyl hexahydrophthalic anhydride curing agent.
4. a kind of epoxy resins insulation transformer according to claim 1 is characterized in that, described flexibilizer is asbestos fibre or glass fibre.
5. a kind of epoxy resins insulation transformer according to claim 1 is characterized in that, is provided with ring-type heat dissipation channel (4) in the described epoxy resins insulation layer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210508819XA CN102982981A (en) | 2012-12-04 | 2012-12-04 | Epoxy resin insulating transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210508819XA CN102982981A (en) | 2012-12-04 | 2012-12-04 | Epoxy resin insulating transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102982981A true CN102982981A (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210508819XA Pending CN102982981A (en) | 2012-12-04 | 2012-12-04 | Epoxy resin insulating transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102982981A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632818A (en) * | 2013-11-15 | 2014-03-12 | 宁夏天地经纬电力设备工程有限公司 | Dry type transformer |
| CN107591635A (en) * | 2016-07-06 | 2018-01-16 | 抚顺凯特利机电化工有限公司 | Increase the toughness of resin in casting type bus with glass fibre |
| CN107644731A (en) * | 2016-07-22 | 2018-01-30 | 阿尔斯通运输科技公司 | Power transformer comprising insulating materials and the method for manufacturing this transformer |
Citations (7)
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| US4464494A (en) * | 1983-05-13 | 1984-08-07 | Exxon Research & Engineering Co. | Adhesive system for production of spiral wound membrane elements for use in organic fluid mixture separations |
| CN101633772A (en) * | 2009-08-21 | 2010-01-27 | 东莞市康德威变压器有限公司 | Epoxy resin composition for transformers and process for casting transformer by composition |
| CN101864145A (en) * | 2010-06-08 | 2010-10-20 | 桂林五环电器制造有限公司 | High heat conductive insulating impregnated resin used for air reactor and preparation method thereof |
| CN102054578A (en) * | 2010-10-29 | 2011-05-11 | 东莞市华胜展鸿电子科技有限公司 | Method for casting full-resin transformer coil |
| CN102360835A (en) * | 2011-08-03 | 2012-02-22 | 扬州华鼎电器有限公司 | Epoxy resin pouring dry type transformer |
| CN102532606A (en) * | 2010-12-31 | 2012-07-04 | 中国科学院理化技术研究所 | Modified aluminum nitride filled epoxy resin composite material |
| CN202523519U (en) * | 2012-03-29 | 2012-11-07 | 武汉振源电力设备有限公司 | Coil structure for dry-type transformer |
-
2012
- 2012-12-04 CN CN201210508819XA patent/CN102982981A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4464494A (en) * | 1983-05-13 | 1984-08-07 | Exxon Research & Engineering Co. | Adhesive system for production of spiral wound membrane elements for use in organic fluid mixture separations |
| CN101633772A (en) * | 2009-08-21 | 2010-01-27 | 东莞市康德威变压器有限公司 | Epoxy resin composition for transformers and process for casting transformer by composition |
| CN101864145A (en) * | 2010-06-08 | 2010-10-20 | 桂林五环电器制造有限公司 | High heat conductive insulating impregnated resin used for air reactor and preparation method thereof |
| CN102054578A (en) * | 2010-10-29 | 2011-05-11 | 东莞市华胜展鸿电子科技有限公司 | Method for casting full-resin transformer coil |
| CN102532606A (en) * | 2010-12-31 | 2012-07-04 | 中国科学院理化技术研究所 | Modified aluminum nitride filled epoxy resin composite material |
| CN102360835A (en) * | 2011-08-03 | 2012-02-22 | 扬州华鼎电器有限公司 | Epoxy resin pouring dry type transformer |
| CN202523519U (en) * | 2012-03-29 | 2012-11-07 | 武汉振源电力设备有限公司 | Coil structure for dry-type transformer |
Non-Patent Citations (1)
| Title |
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| CHIYUEEMO: "环氧树脂的用途", 《HTTP://ZHIDAO.BAIDU.COM/QUESTION/4705072.HTML ?FROM=PUBPAGE&MSGTYPE=2》, 10 March 2006 (2006-03-10), pages 1 - 5 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632818A (en) * | 2013-11-15 | 2014-03-12 | 宁夏天地经纬电力设备工程有限公司 | Dry type transformer |
| CN107591635A (en) * | 2016-07-06 | 2018-01-16 | 抚顺凯特利机电化工有限公司 | Increase the toughness of resin in casting type bus with glass fibre |
| CN107644731A (en) * | 2016-07-22 | 2018-01-30 | 阿尔斯通运输科技公司 | Power transformer comprising insulating materials and the method for manufacturing this transformer |
| CN107644731B (en) * | 2016-07-22 | 2021-09-10 | 阿尔斯通运输科技公司 | Power transformer comprising insulating material and method of manufacturing such a transformer |
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Application publication date: 20130320 |