CN103151146A - Water-proof epoxy cast dry type transformer - Google Patents
Water-proof epoxy cast dry type transformer Download PDFInfo
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- CN103151146A CN103151146A CN2013100726131A CN201310072613A CN103151146A CN 103151146 A CN103151146 A CN 103151146A CN 2013100726131 A CN2013100726131 A CN 2013100726131A CN 201310072613 A CN201310072613 A CN 201310072613A CN 103151146 A CN103151146 A CN 103151146A
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Abstract
The invention discloses a water-proof epoxy cast dry type transformer which comprises a transformer iron core, a secondary coil, a primary coil and iron cored screws, wherein the transformer iron core is fixed through the iron cored screws, the secondary coil is sleeved on the transformer iron core, the primary coil is positioned outside the secondary coil, the primary coil and the secondary coil are casted in an epoxy layer after being coiled, and the surfaces of the primary coil and the secondary coil are coated with waterproof insulation varnish; and the surface of the transformer iron core is coated with waterproof paint integrally. The water-proof epoxy cast dry type transformer provided by the invention has an advanced structural design, breaks through a conventional transformer manufacturing technique, has an obvious waterproof measure effect, and can be fully applied to various running environments with special requirements for waterproofing.
Description
Technical field
The present invention relates to field transformer, particularly a kind of waterproof Cast Resin Dry-Type Transformer.
Background technology
At present, the transformer that some special dimensions use, require very high to water resistance, as certain use for electric locomotive transformer, requirement is steeped transformer after in water 24 hours, carry out insulation measurement after leaving the water, insulation against ground resistance requirement 〉=2M Ω unshakable in one's determination, primary winding insulation against ground resistance, secondary coil insulation against ground resistance, primary winding require all 〉=10M Ω to the secondary coil insulation resistance.Existing various types of dry-type transformers all can't reach this waterproof requirement.
number of patent application is: CN200910117255.5, denomination of invention is: the Chinese patent application of dry-type transformer or reactor winding method for waterproofing, it discloses a kind of dry-type transformer or reactor winding method for waterproofing, comprise the steps: the winding of dry-type transformer or reactor is coated the 1-2 layer with the axial half lap of glass tape, radial half lap coats the 1-2 layer again, again the winding upper and lower end parts is evenly applied one deck with epoxy resin, then oven dry, after winding temperature is reduced to room temperature, immersed in epoxies insulating varnish 3-5 minute, take out and drip the paint post-drying, after winding temperature is reduced to room temperature, immersed again in epoxies insulating varnish 10-15 minute, taking out a paint post-drying gets final product.
Although above-mentioned Patent Application Publication the water-proofing treatment technology of winding of transformer or reactor, the water-proofing treatment of the miscellaneous part of transformer is more crucial, does not also have solution in prior art.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of waterproof Cast Resin Dry-Type Transformer, this transformer water resistance is very excellent, can be applied in the various running environment that waterproof had specific (special) requirements fully.
A kind of waterproof Cast Resin Dry-Type Transformer provided by the invention comprises:
Transformer core, secondary coil, primary winding, core through screw rod unshakable in one's determination;
Described transformer core is fixed by described core through screw rod unshakable in one's determination, and described secondary coil is sleeved on described transformer fe in the heart, and described primary winding is positioned at outside described secondary coil;
All be cast in epoxy resin layer after described secondary coil and primary winding coiling, the surface spraying of described secondary coil and primary winding has the waterproof insulation paint;
Described transformer core surface integral is brushed with underwater paint.
Wherein, described core through screw rod unshakable in one's determination two ends are with waterproof washer, metallic gasket, fastening nuts.
Wherein, described waterproof Cast Resin Dry-Type Transformer also comprises: transformer lead-out wire and connecting copper pipe; Described transformer lead-out wire adopts water-proof cable directly to draw from described secondary coil and primary winding inside, and connects by described connecting copper pipe between the transformer lead-out wire.
Wherein, the thickness of described epoxy resin layer is 1-3mm.
Implement the present invention, have following beneficial effect:
Waterproof Cast Resin Dry-Type Transformer provided by the invention, all be cast in epoxy resin after its primary winding, secondary coil coiling, this structure plays good effect to the coil waterproof, and coil surface spraying waterproof insulation paint, has further strengthened the water resistance of coil;
And, waterproof Cast Resin Dry-Type Transformer of the present invention, its transformer core surface brush waterproof insulation paint, core through screw rod unshakable in one's determination place's increase waterproof washer, these measures have effectively strengthened waterproof effect unshakable in one's determination.
In addition, waterproof Cast Resin Dry-Type Transformer of the present invention, the transformer lead-out wire uses has the cable of water resistance directly to draw from coil inside, connection between lead-in wire uses connecting copper pipe with the cable connection of colding pressing, after treatment, improved largely the water resistance of lead-in wire, the water resistance of coil is met the demands.
Structural design of the present invention is advanced, has broken through traditional transformer manufacturing process, and the waterproof measure successful can be applied in the various running environment that waterproof had specific (special) requirements fully.
Description of drawings
Fig. 1 is the perspective view of waterproof Cast Resin Dry-Type Transformer of the present invention.
Fig. 2 is the planar structure schematic diagram of waterproof Cast Resin Dry-Type Transformer of the present invention
Fig. 3 is the connection diagram of the transformer lead-out wire of waterproof Cast Resin Dry-Type Transformer of the present invention.
Embodiment
Below in conjunction with accompanying drawing, waterproof Cast Resin Dry-Type Transformer of the present invention is described further.
Waterproof Cast Resin Dry-Type Transformer embodiment one:
As shown in Figure 1, waterproof Cast Resin Dry-Type Transformer of the present invention comprises the parts such as transformer core 1, secondary coil 2, primary winding 3, core through screw rod unshakable in one's determination 4, transformer lead-out wire 5, connecting copper pipe 6.
Transformer core 1 is fixing by described core through screw rod 4 unshakable in one's determination, and described secondary coil 2 is wound on described transformer core 1, and described primary winding 3 is positioned at outside described secondary coil 2.
All be cast in epoxy resin layer after described secondary coil 2 and primary winding 3 coilings, the surface spraying of described secondary coil 2 and primary winding 3 has the waterproof insulation paint; Wherein, the waterproof insulation paint is specially acroleic acid polyurethane insulating varnish, fills a prescription as follows:
Proportioning: S52-RAL3000 first Zu Fen ﹕ second Zu Fen ﹕ oil resistance agent=2 ﹕ 1 ﹕ 0.01
Wherein, S52-RAL3000 first component is specially: acroleic acid polyurethane, the second component is specially: butanone.
The method that this waterproof insulation paint is sprayed on primary winding 3 and secondary coil 2 is as follows:
The waterproof insulation paint evenly is sprayed on primary winding 3 and secondary coil 2, with primary winding 3 and all coverings of secondary coil 2 surfaces.
The surface integral of transformer core 1 is brushed with underwater paint.The proportioning of this underwater paint is: the curing agent of coating system unshakable in one's determination is the ratio allotment of 4:1 by weight, stirs.
Surface brush mopping method at described transformer core 1 is: the standing froth breaking of the underwater paint sol that mixes evenly was brushed on transformer core 1 after 5～10 minutes, surface unshakable in one's determination is all covered.
The composition of underwater paint is as follows:
Coating unshakable in one's determination is: novolac epoxy resin;
Curing agent is: methyl tetrahydrophthalic anhydride.
Wherein, the thickness of described epoxy resin layer is 1-3mm.
Waterproof Cast Resin Dry-Type Transformer provided by the invention, all be cast in epoxy resin after its primary winding, secondary coil coiling, this structure plays good effect to the coil waterproof, and coil surface spraying waterproof insulation paint, has further strengthened the water resistance of coil.
Waterproof Cast Resin Dry-Type Transformer embodiment two:
The structure of the waterproof Cast Resin Dry-Type Transformer that the present embodiment two provides is with embodiment one, and on this basis, its core through screw rod unshakable in one's determination 4 two ends are carried out fastening with waterproof washer, metallic gasket, nut.So can effectively strengthen waterproof effect unshakable in one's determination.
Waterproof Cast Resin Dry-Type Transformer embodiment three:
In the waterproof Cast Resin Dry-Type Transformer that the present embodiment three provides, transformer lead-out wire 5 adopts water-proof cable directly to draw from the inside of described secondary coil 2, primary winding 3, and connects by connecting copper pipe 6 between transformer lead-out wire 5.Through after such water-proofing treatment, improved largely the water resistance of lead-in wire, the water resistance of coil is met the demands.
Waterproof Cast Resin Dry-Type Transformer structural design of the present invention is advanced, has broken through traditional transformer manufacturing process, and the waterproof measure successful can be applied in the various running environment that waterproof had specific (special) requirements fully.
The above is the preferred embodiment 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 improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (4)
1. a waterproof Cast Resin Dry-Type Transformer, is characterized in that, comprising:
Transformer core, secondary coil, primary winding, core through screw rod unshakable in one's determination;
Described transformer core is fixed by described core through screw rod unshakable in one's determination, and described secondary coil is sleeved on described transformer fe in the heart, and described primary winding is positioned at outside described secondary coil;
All be cast in epoxy resin layer after described secondary coil and primary winding coiling, the surface spraying of described secondary coil and primary winding has the waterproof insulation paint;
Described transformer core surface integral is brushed with underwater paint.
2. waterproof Cast Resin Dry-Type Transformer as claimed in claim 1, is characterized in that, described core through screw rod unshakable in one's determination two ends are with waterproof washer, metallic gasket, fastening nuts.
3. waterproof Cast Resin Dry-Type Transformer as claimed in claim 2, is characterized in that, described waterproof Cast Resin Dry-Type Transformer also comprises: transformer lead-out wire and connecting copper pipe;
Described transformer lead-out wire adopts water-proof cable directly to draw from described secondary coil, primary winding inside, and connects by described connecting copper pipe between the transformer lead-out wire.
4. waterproof Cast Resin Dry-Type Transformer as claimed in claim 3, is characterized in that, the thickness of described epoxy resin layer is 1-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100726131A CN103151146A (en) | 2013-03-07 | 2013-03-07 | Water-proof epoxy cast dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100726131A CN103151146A (en) | 2013-03-07 | 2013-03-07 | Water-proof epoxy cast dry type transformer |
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| Publication Number | Publication Date |
|---|---|
| CN103151146A true CN103151146A (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100726131A Pending CN103151146A (en) | 2013-03-07 | 2013-03-07 | Water-proof epoxy cast dry type transformer |
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| CN (1) | CN103151146A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105976990A (en) * | 2016-07-04 | 2016-09-28 | 苏州吴变电气科技有限公司 | Heat dissipation structure of electric reactor |
| CN108320897A (en) * | 2017-07-04 | 2018-07-24 | 广东恒能电力科技有限公司 | The production method of full surface damp proof insulation dry-type air-core reactor |
| CN113223814A (en) * | 2021-05-07 | 2021-08-06 | 浙江江山变压器股份有限公司 | Dry-type transformer molded by casting polyurethane resin and processing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555052A (en) * | 1991-08-23 | 1993-03-05 | Toshiba Corp | Sealing method of winding for disassembled transportation transformer |
| CN101599352A (en) * | 2009-04-14 | 2009-12-09 | 焦海波 | Dry-type transformer or reactor winding method for waterproofing |
| CN101604572A (en) * | 2009-04-14 | 2009-12-16 | 焦海波 | The winding conducting wire of dry-type transformer or reactor and the method for attachment of leader cable |
| CN201673781U (en) * | 2010-04-29 | 2010-12-15 | 应宏熹 | Waterproof stain-resistant dry-type transformer |
| CN101930835A (en) * | 2009-06-26 | 2010-12-29 | 苏州工业园区隆盛电器成套设备制造有限公司 | Dry type transformer for railway vehicle |
-
2013
- 2013-03-07 CN CN2013100726131A patent/CN103151146A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555052A (en) * | 1991-08-23 | 1993-03-05 | Toshiba Corp | Sealing method of winding for disassembled transportation transformer |
| CN101599352A (en) * | 2009-04-14 | 2009-12-09 | 焦海波 | Dry-type transformer or reactor winding method for waterproofing |
| CN101604572A (en) * | 2009-04-14 | 2009-12-16 | 焦海波 | The winding conducting wire of dry-type transformer or reactor and the method for attachment of leader cable |
| CN101930835A (en) * | 2009-06-26 | 2010-12-29 | 苏州工业园区隆盛电器成套设备制造有限公司 | Dry type transformer for railway vehicle |
| CN201673781U (en) * | 2010-04-29 | 2010-12-15 | 应宏熹 | Waterproof stain-resistant dry-type transformer |
Non-Patent Citations (1)
| Title |
|---|
| 变压器制造技术丛书编审委员会编: "《变压器铁心制造工艺》", 30 April 1998, article "铁心的结构及典型结构件", pages: 186-192 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105976990A (en) * | 2016-07-04 | 2016-09-28 | 苏州吴变电气科技有限公司 | Heat dissipation structure of electric reactor |
| CN105976990B (en) * | 2016-07-04 | 2018-05-08 | 苏州吴变电气科技有限公司 | A kind of reactor radiator structure |
| CN108320897A (en) * | 2017-07-04 | 2018-07-24 | 广东恒能电力科技有限公司 | The production method of full surface damp proof insulation dry-type air-core reactor |
| CN113223814A (en) * | 2021-05-07 | 2021-08-06 | 浙江江山变压器股份有限公司 | Dry-type transformer molded by casting polyurethane resin and processing method thereof |
| CN113223814B (en) * | 2021-05-07 | 2023-03-24 | 浙江江山变压器股份有限公司 | Dry-type transformer molded by casting polyurethane resin and processing method thereof |
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Application publication date: 20130612 |