CN103531331A - Oil-immersed transformer - Google Patents
Oil-immersed transformer Download PDFInfo
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- CN103531331A CN103531331A CN201310476855.7A CN201310476855A CN103531331A CN 103531331 A CN103531331 A CN 103531331A CN 201310476855 A CN201310476855 A CN 201310476855A CN 103531331 A CN103531331 A CN 103531331A
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- voltage coil
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Abstract
The invention discloses an oil-immersed transformer and belongs to electrical equipment. The oil-immersed transformer comprises an oil tank, an iron core and a winding arranged on the iron core in a sleeved mode. Corrugated sheets are arranged on the outer surface of the side wall of the oil tank. Sun protection coatings are arranged on the surface of the oil tank and the surfaces of the corrugated sheets. The section of the iron core is oval. The winding comprises a high-voltage coil and a low-voltage coil. The high-voltage coil and the low-voltage coil are both formed in a foil winding mode, are matched with the iron core and are oval. Insulating layers are arranged between the high-voltage coil and the low-voltage coil and between the low-voltage coil and the iron core and are made of polyester films. According to the oil-immersed transformer, the sun protection coatings are arranged, so that heat dissipating effect is good, and service life is long; the shape of the iron core and the shape of the coils are all changed from rectangles to ovals, so that materials and cost are saved; the winding mode of the coils is changed from wire winding to foil winding, so that the capacity of resistance to short circuits is strong, and machining is convenient; the insulating layers are polymer films, so that not only is the diameter of the coils reduced, but also reliability is achieved.
Description
Technical field
The present invention relates to a kind of power equipment, specifically a kind of oil-filled transformer.
Background technology
In modern society, transformer is one of visual plant in industrial and mining enterprises and civil buildings power supply-distribution system, in electric equipment and radio-circuit, transformer is commonly used for lifting voltage, matched impedance, safety isolation etc., according to methods for cooling, classify, transformer can be divided into dry-type transformer and the large class of oil-filled transformer two.
Oil-filled transformer, because fireproof needs, is generally arranged on independent transformer indoor or outdoors, has that cost is low, easy to maintenance, reliable operation, good heat dissipation, capability of overload is strong, feature widely conforms.
The main member of transformer is high-tension coil, low-voltage coil and iron core, and at present, the iron core of transformer and coil are rectangle, coil adopts the form of wire-wound, and consume material is more, and cost is higher, and the coil anti-short circuit capability of wire-wound form a little less than, processing is inconvenient.In addition, between the coil of oil-filled transformer owing to cannot realizing air insulation, insulating barrier must be set, the insulating barrier of existing oil-filled transformer consists of insulating paper, insulating paper is easy to be pricked, for the safe and reliable and assurance insulation property of working, insulating paper need to be used multilayer, and this just causes coil very thick.
In addition, when using out of doors, due to the irradiation of the sun, transformer, except self producing in running a large amount of heat, also can absorb the heat of sunlight, and the temperature of transformer easily exceeds the limit value of regulation.If transformer moves for a long time in the situation that temperature is very high, will accelerate transformer insulated degree of aging, cause very large harm.For example: shorten the life-span of inner insulation material, make insulating material become dry easily crisp, easily, because vibration or electrodynamic effect damage, insulating material loses insulating effect after damaging, easily cause and the accident such as puncture; Accelerate the deteriorated of insulating oil, affect the useful life of transformer.So transformer operating temperature has important impact to transformer reliability of operation.And for the transformer of open air use, how to reduce sunlight thermal radiation impact, reduce transformer temperature, one of emphasis that each transformer producer research and development are paid close attention to especially.
Summary of the invention
The object of the present invention is to provide a kind of oil-filled transformer, this transformer can effectively avoid the transformer working temperature that causes due to solar radiation too high, save material and cost, and anti-short circuit capability is strong, more compact structure, and reliable operation, easy to process.
The present invention solves the technical scheme that its technical problem takes: a kind of oil-filled transformer, comprise fuel tank and transformer core body, described transformer core body comprises iron core, two or more number of turn is different and winding insulated from each other, described winding is enclosed within on iron core, the sidewall outer surface of described fuel tank is provided with corrugated plate, and the surface of fuel tank and corrugated plate is provided with sun-proof coating; The cross sectional shape of described iron core comprises intermediate rectangular, and the bilateral symmetry of intermediate rectangular is distributed with the rectangle that length and width reduce successively, makes the cross sectional shape of iron core form ellipse; Described winding comprises high-tension coil, low-voltage coil, described low-voltage coil interior, be enclosed within on iron core, high-tension coil is enclosed within outside low-voltage coil, high-tension coil and low-voltage coil all adopt paper tinsel around mode and are the ellipse that matches with iron core; Between high-tension coil and low-voltage coil and between low-voltage coil and iron core, be equipped with insulating barrier, described insulating barrier consists of polyester film.
Described low-voltage coil outermost layer is wound around without latitude glass adhesive tape with half-dried, and described high-tension coil outermost layer is wound around with tightening strap.
In described high-tension coil and low-voltage coil, oil duct is set, oil duct is that many bracing bars are bonded on polyester film and form.
The invention has the beneficial effects as follows:
1, iron core and coil change ellipse into by rectangle, have saved material and cost.
2, the coiling form of coil by wire-wound change into paper tinsel around, anti-short circuit capability is strong, reliable operation is easy to process.
3, insulating barrier changes polyester film into by insulating paper, has not only reduced coil diameter, makes the structure of equipment compacter, and more reliable performance.
4, the surface of fuel tank and corrugated plate is provided with sun-proof coating, can effectively avoid, because solar radiation causes the too high problem of transformer working temperature, also having advantages of good heat dissipation effect, long service life simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of fuel tank of the present invention;
Fig. 2 is the structural representation of transformer core body of the present invention.
In figure: 1 fuel tank, 2 corrugated plates, 3 iron cores, 4 low-voltage coils, 5 insulating barriers, 6 stays.
Embodiment
As shown in Figure 1 and Figure 2, a kind of oil-filled transformer, comprise fuel tank 1 and transformer core body, described transformer core body comprises iron core 3, two or more number of turn is different and winding insulated from each other, described winding is enclosed within on iron core 3, the sidewall outer surface of described fuel tank 1 is provided with corrugated plate 2, and the surface of fuel tank 1 and corrugated plate 2 is provided with sun-proof coating; The cross sectional shape of described iron core 3 comprises intermediate rectangular, and the bilateral symmetry of intermediate rectangular is distributed with the rectangle that length and width reduce successively, makes the cross sectional shape of iron core 3 form ellipse; Described winding comprises high-tension coil, low-voltage coil 4, described low-voltage coil 4 interior, be enclosed within on iron core 3, high-tension coil is enclosed within outside low-voltage coil 4, high-tension coil and low-voltage coil 4 all adopt paper tinsel around mode and are the ellipse that matches with iron core 3; Between high-tension coil and low-voltage coil 4 and between low-voltage coil 4 and iron core 3, be equipped with insulating barrier 5, described insulating barrier 5 consists of polyester film.
Described low-voltage coil 4 outermost layers are wound around without latitude glass adhesive tape with half-dried, and described high-tension coil outermost layer is wound around with tightening strap.
In order to be beneficial to heat radiation, the interior oil duct that arranges of described high-tension coil and low-voltage coil 4, oil duct is that many bracing bars 6 are bonded on polyester film and form.
The surface of fuel tank 1 and corrugated plate 2 is provided with sun-proof coating, and effectively reflected solar radiation, avoids fuel tank 1 shining upon lower heating; The good heat dissipation effect of corrugated plate 2, transformer bulk temperature is low, thereby reduces the speed of Transformer Insulation Aging, has extended the useful life of transformer.Iron core 3 and coil change ellipse into by rectangle, have saved material and cost; The coiling form of coil by wire-wound change into paper tinsel around, anti-short circuit capability is strong, reliable operation is easy to process; Insulating barrier 5 changes polyester film into by insulating paper, has not only reduced coil diameter, makes the structure of equipment compacter, and more reliable performance.
The above, principles more of the present invention just explain through diagrams, this specification is not that in concrete structure and the scope of application described shown in the present invention will being confined to, therefore the corresponding modify being likely utilized every and equivalent, all belong to the scope of the claims that the present invention applies for.
Except technical characterictic described in specification, all the other technical characterictics are those skilled in the art's known technology.
Claims (3)
1. an oil-filled transformer, comprise fuel tank and transformer core body, described transformer core body comprises iron core, two or more number of turn is different and winding insulated from each other, described winding is enclosed within on iron core, it is characterized in that, the sidewall outer surface of described fuel tank is provided with corrugated plate, and the surface of fuel tank and corrugated plate is provided with sun-proof coating; The cross sectional shape of described iron core comprises intermediate rectangular, and the bilateral symmetry of intermediate rectangular is distributed with the rectangle that length and width reduce successively, makes the cross sectional shape of iron core form ellipse; Described winding comprises high-tension coil, low-voltage coil, described low-voltage coil interior, be enclosed within on iron core, high-tension coil is enclosed within outside low-voltage coil, high-tension coil and low-voltage coil all adopt paper tinsel around mode and are the ellipse that matches with iron core; Between high-tension coil and low-voltage coil and between low-voltage coil and iron core, be equipped with insulating barrier, described insulating barrier consists of polyester film.
2. a kind of oil-filled transformer according to claim 1, is characterized in that, described low-voltage coil outermost layer is wound around without latitude glass adhesive tape with half-dried, and described high-tension coil outermost layer is wound around with tightening strap.
3. a kind of oil-filled transformer according to claim 2, is characterized in that, in described high-tension coil and low-voltage coil, oil duct is set, and oil duct is that many bracing bars are bonded on polyester film and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476855.7A CN103531331A (en) | 2013-10-12 | 2013-10-12 | Oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310476855.7A CN103531331A (en) | 2013-10-12 | 2013-10-12 | Oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103531331A true CN103531331A (en) | 2014-01-22 |
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ID=49933268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310476855.7A Pending CN103531331A (en) | 2013-10-12 | 2013-10-12 | Oil-immersed transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN103531331A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064331A (en) * | 2014-07-09 | 2014-09-24 | 伊戈尔电气股份有限公司 | Wrapping insulation part for high tension coils of oil-immersed transformer |
| CN104867665A (en) * | 2015-06-02 | 2015-08-26 | 国家电网公司 | Tangent circle type coil and manufacturing method thereof |
| CN105551773A (en) * | 2016-01-21 | 2016-05-04 | 王永法 | Anti-short-circuit transformer coil and preparation method therefor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201298427Y (en) * | 2008-06-30 | 2009-08-26 | 常州特种变压器有限公司 | Oil-filled transformer |
| CN202454415U (en) * | 2012-02-15 | 2012-09-26 | 山东晨宇电气股份有限公司 | Oil-immersed transformer |
| CN202650790U (en) * | 2012-05-17 | 2013-01-02 | 常州市光辉变压器制造有限公司 | Iron core structure of oil immersed transformer |
| CN202855494U (en) * | 2012-10-17 | 2013-04-03 | 广东中鹏电气有限公司 | Oil-immersed transformer |
| CN203480999U (en) * | 2013-10-12 | 2014-03-12 | 山东万通电力设备配套有限公司 | Oil-immersed transformer |
-
2013
- 2013-10-12 CN CN201310476855.7A patent/CN103531331A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201298427Y (en) * | 2008-06-30 | 2009-08-26 | 常州特种变压器有限公司 | Oil-filled transformer |
| CN202454415U (en) * | 2012-02-15 | 2012-09-26 | 山东晨宇电气股份有限公司 | Oil-immersed transformer |
| CN202650790U (en) * | 2012-05-17 | 2013-01-02 | 常州市光辉变压器制造有限公司 | Iron core structure of oil immersed transformer |
| CN202855494U (en) * | 2012-10-17 | 2013-04-03 | 广东中鹏电气有限公司 | Oil-immersed transformer |
| CN203480999U (en) * | 2013-10-12 | 2014-03-12 | 山东万通电力设备配套有限公司 | Oil-immersed transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064331A (en) * | 2014-07-09 | 2014-09-24 | 伊戈尔电气股份有限公司 | Wrapping insulation part for high tension coils of oil-immersed transformer |
| CN104867665A (en) * | 2015-06-02 | 2015-08-26 | 国家电网公司 | Tangent circle type coil and manufacturing method thereof |
| CN105551773A (en) * | 2016-01-21 | 2016-05-04 | 王永法 | Anti-short-circuit transformer coil and preparation method therefor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |