CN203480999U - Oil-immersed transformer - Google Patents
Oil-immersed transformer Download PDFInfo
- Publication number
- CN203480999U CN203480999U CN201320630402.0U CN201320630402U CN203480999U CN 203480999 U CN203480999 U CN 203480999U CN 201320630402 U CN201320630402 U CN 201320630402U CN 203480999 U CN203480999 U CN 203480999U
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- iron core
- low
- voltage coil
- coil
- oil
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Abstract
The utility model provides 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, sunscreen 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, and the high-voltage coil and the low-voltage coil are surrounded by foil and are oval matched with the iron core. Insulating layers are arranged between the high-voltage coil and the low-voltage coil and between the low-voltage coil and the iron core. The insulating layers are formed by polyester films. Through the sunscreen coatings, the oil-immersed transformer is good in heat dissipation effect and long in service life, the iron core and the coils are changed to be oval from rectangular, and materials and cost are saved. The coils are formed in a mode of a foil winding instead of wire winding, and are high in short circuit resistance, and convenient to process. The insulating layers are polyester films, so that the diameter of each coil is reduced, and the coils are more reliable.
Description
Technical field
The utility model 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.
Utility model content
The purpose of this utility model is to provide a kind of oil-filled transformer, and 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 technical scheme in the invention for solving the technical problem is: 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 beneficial effects of the utility model are:
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 the utility model fuel tank;
Fig. 2 is the structural representation of the utility model transformer core body.
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 utility model just explain through diagrams, this specification is not in concrete structure and the scope of application described shown in the utility model will being confined to, therefore the corresponding modify being likely utilized every and equivalent, all belong to the scope of the claims that the utility model is applied 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 |
|---|---|---|---|
| CN201320630402.0U CN203480999U (en) | 2013-10-12 | 2013-10-12 | Oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630402.0U CN203480999U (en) | 2013-10-12 | 2013-10-12 | Oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203480999U true CN203480999U (en) | 2014-03-12 |
Family
ID=50229282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320630402.0U Expired - Fee Related CN203480999U (en) | 2013-10-12 | 2013-10-12 | Oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203480999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531331A (en) * | 2013-10-12 | 2014-01-22 | 山东万通电力设备配套有限公司 | Oil-immersed transformer |
-
2013
- 2013-10-12 CN CN201320630402.0U patent/CN203480999U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531331A (en) * | 2013-10-12 | 2014-01-22 | 山东万通电力设备配套有限公司 | Oil-immersed transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20141012 |
|
| EXPY | Termination of patent right or utility model |