CN112599337A - Transformer oil circuit structure - Google Patents
Transformer oil circuit structure Download PDFInfo
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- CN112599337A CN112599337A CN202011414095.3A CN202011414095A CN112599337A CN 112599337 A CN112599337 A CN 112599337A CN 202011414095 A CN202011414095 A CN 202011414095A CN 112599337 A CN112599337 A CN 112599337A
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- oil
- oil duct
- duct
- paper tube
- coil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses an oil path structure of a transformer, which comprises coils and wire cakes, wherein a plurality of coils and wire cakes are sequentially arranged from top to bottom, oil baffle plates are arranged between the plurality of coils and the wire cakes, the oil baffle plates are alternately arranged from left to right so that S-shaped oil paths are formed on the coils and the wire cakes, first oil paths and second oil paths are sequentially arranged on the inner sides of the coils and the wire cakes, third oil paths and fourth oil paths are sequentially arranged on the outer sides of the coils and the wire cakes, the first oil paths are divided into lower first oil paths and upper first oil paths, the lower first oil paths are not communicated with the upper first oil paths, and the third oil paths are divided into lower third oil paths and upper third oil paths. The invention can effectively solve the problems that the insulating oil of the existing oil circuit structure flows through the whole coil, so that the oil at the upper part of the coil is heated by the lower part, the oil temperature is increased, and the heat dissipation, the insulating service life and the operation safety of an upper wire cake are influenced.
Description
Technical Field
The invention relates to the technical field of oil-immersed power transformers, in particular to an oil way structure of a transformer.
Background
Along with the development of economy, the requirement on the capacity of the transformer is higher and higher, the loss is correspondingly increased along with the increase of the capacity, and the difficulty in controlling the temperature rise of the transformer coil is higher and higher. The oil-immersed transformer coil is cooled by insulating oil, and the insulating oil exchanges heat with the transformer coil when flowing through the insulating oil duct, so that the heat of the transformer coil is taken away. However, the existing oil path structure causes the insulating oil to flow through the whole coil, so that the oil on the upper part of the coil is heated by the lower part, and the oil temperature is increased, thereby not only affecting the heat dissipation of the upper wire cake, but also affecting the insulating life and the operation safety of the coil. Therefore, how to timely discharge the heat of the large-capacity transformer coil, so that the large-capacity transformer coil is in a low-temperature environment, and the insulation life and the operation safety of the large-capacity transformer coil are ensured is a critical problem to be solved by those skilled in the art.
Disclosure of Invention
Aiming at the technical problems, the invention provides an oil path structure of a transformer, which can effectively solve the problems that the oil on the upper part of a coil is heated by the lower part and the oil temperature is increased to influence the heat dissipation of an upper wire cake, the insulation service life and the operation safety because the insulating oil of the existing oil path structure flows through the whole coil.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
an oil way structure of a transformer comprises coils and wire cakes, wherein a plurality of coils and wire cakes are sequentially arranged from top to bottom, oil baffle plates are arranged between the plurality of coils and the wire cakes, the oil baffle plates are alternately arranged from left to right to form S-shaped oil ways on the coils and the wire cakes, first oil ways and second oil ways are sequentially arranged on the inner sides of the coils and the wire cakes, third oil ways and fourth oil ways are sequentially arranged on the outer sides of the coils and the wire cakes, the first oil ways are divided into lower first oil ways and upper first oil ways, the lower first oil ways are not communicated with the upper first oil ways, the third oil ways are divided into lower third oil ways and upper third oil ways, the lower third oil ways are communicated with the second oil ways through the S-shaped oil ways after the lower parts of the coils and the wire cakes are communicated with the lower first oil ways, the second oil duct is connected with external oil-way equipment, and the fourth oil duct is connected with the external oil-way equipment through the S-shaped oil-way after the upper parts of the coil and the spool are communicated with the upper first oil duct.
The inner sides of the coil and the wire cake are provided with a first paper tube, the inner side of the first paper tube is provided with a second paper tube, a first oil duct is formed between the coil and the wire cake and the first paper tube, a second oil duct is formed between the first paper tube and the second paper tube, a third paper tube is arranged on the outer side of the coil and the wire cake, a fourth paper tube is arranged on the outer side of the third paper tube, a third oil duct is formed between the coil and the wire cake and the third paper tube, a fourth oil duct is formed between the third paper tube and the fourth paper tube, a first oil blocking device is arranged at the same position of the first oil duct and the third oil duct, the first oil blocking device divides the first oil duct into a lower first oil duct and an upper first oil duct, the lower first oil duct is not communicated with the upper first oil duct, the first oil blocking device divides the third oil duct into a lower third oil duct and an upper third oil duct, the lower third oil duct is not communicated with the upper third oil duct, the lower third oil duct is communicated with the second oil duct through the S-shaped oil path after the lower parts of the coil and the spool are communicated with the lower first oil duct, the second oil duct is connected with external oil path equipment, and the fourth oil duct is communicated with the upper first oil duct through the S-shaped oil path after the upper parts of the coil and the spool are communicated with the upper first oil duct.
The oil blocking device comprises a first oil blocking device and a second oil blocking device, wherein a first through hole is formed in the lower side of the first oil blocking device, a second through hole is formed in the upper side of the first oil blocking device, the first through hole communicates the lower first oil duct with the second oil duct, and the second through hole communicates the fourth oil duct with the upper third oil duct.
And a second oil retaining device is arranged at the bottom of the second oil duct.
And a third oil retaining device is arranged in the fourth oil duct corresponding to the second through hole.
The first oil blocking device is a partition plate arranged between the coil and the wire cake.
The second oil retaining device is a sealing ring which is installed between the first paper tube and the second paper tube in a matching mode.
And the third oil retaining device is a sealing ring which is arranged between the third paper tube and the fourth paper tube in a matching way.
The invention has the beneficial effects that: according to the invention, the first oil duct and the second oil duct are sequentially arranged on the inner sides of the coil and the spool, the third oil duct and the fourth oil duct are sequentially arranged on the outer sides of the coil and the spool, the first oil duct is divided into the lower first oil duct and the upper first oil duct, the lower first oil duct and the upper first oil duct are not communicated with each other, the third oil duct is divided into the lower third oil duct and the upper third oil duct, and the lower third oil duct and the upper third oil duct are not communicated with each other. Furthermore, the first paper tube, the second paper tube, the third paper tube and the fourth paper tube are arranged on the inner side and the outer side of the coil and the wire cake to form four oil ducts, and the first oil blocking device is used for dividing the first oil duct and the third oil duct, so that cold oil respectively flows through the upper portion and the lower portion of the coil and the wire cake to cool the coil and the wire cake respectively, and the wire cake cooling device is simple, convenient, efficient, easy to implement and capable of saving cost. Furthermore, the lower first oil duct and the second oil duct are communicated by the first through hole, so that cold oil can directly enter the second oil duct to be discharged after entering the lower first oil duct to finish primary heat exchange, and the cold oil is effectively prevented from bringing heat at the lower parts of the coil and the wire cake into the upper part to influence the cooling of the upper part. Furthermore, a second oil retaining device is arranged at the bottom of the second oil duct, and a third oil retaining device is arranged in the fourth oil duct corresponding to the second through hole, so that cold oil can be prevented from entering the upper half parts of the second oil duct and the fourth oil duct, the heat exchange efficiency of other oil ducts is influenced, and the cold oil can completely flow into the coil and the wire cake to perform heat exchange. Furthermore, the coil and the coil cake are divided into an upper part and a lower part by the partition plate, the method is simple and feasible, the sealing rings are used as the second oil retaining device and the third oil retaining device, oil leakage can be prevented, the method is convenient to realize, the difficulty in installation and maintenance is reduced, and the cost is also reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the present invention;
the oil-retaining device comprises a coil and a wire cake 1, an oil-retaining plate 2, a first through hole 3, a second through hole 4, a first oil-retaining device 5, a second oil-retaining device 6, a first paper cylinder 7, a second paper cylinder 8, a third paper cylinder 9, a fourth paper cylinder 10 and a third oil-retaining device 11.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
As shown in fig. 1, an oil path structure of a transformer includes a coil and a spool 1, a plurality of the coil and the spool 1 are sequentially arranged from top to bottom, oil baffle plates 2 are arranged between the plurality of the coil and the spool 1, the oil baffle plates 2 are alternately arranged from left to right to form an S-shaped oil path on the coil and the spool 1, a first oil path and a second oil path are sequentially arranged at the inner side of the coil and the spool 1, a third oil path and a fourth oil path are sequentially arranged at the outer side of the coil and the spool 1, the first oil path is divided into a lower first oil path and an upper first oil path, the lower first oil path is not communicated with the upper first oil path, the third oil path is divided into a lower third oil path and an upper third oil path, the lower third oil path is communicated with the second oil path through the S-shaped oil path after the lower portion of the coil and the lower first oil path is communicated with the lower first oil path, and the second oil path is connected with an external oil path device, and the fourth oil duct is communicated with the upper first oil duct at the upper part of the coil and the spool 1 and then is connected with external oil-way equipment through an S-shaped oil way.
Because the existing coil and wire cake cooling is realized by arranging a paper tube in the coil and wire cake 1 and forming an oil passage in the paper tube, and introducing insulating oil for heat exchange to realize cooling, the invention is more beneficial to the realization of the scheme for convenience of implementation, the paper tubes are still utilized to realize the first to fourth oil passages discussed in the invention, specifically, the inner side of the coil and wire cake 1 is provided with a first paper tube 7, the inner side of the first paper tube 7 is provided with a second paper tube 8, a first oil passage is formed between the coil and wire cake 1 and the first paper tube 7, a second oil passage is formed between the first paper tube 7 and the second paper tube 8, the outer side of the coil and wire cake 1 is provided with a third paper tube 9, the outer side of the third paper tube 9 is provided with a fourth paper tube 10, a third oil passage is formed between the coil and wire cake 1 and the third paper tube 9, and a fourth oil passage is formed between the third paper tube 9 and the fourth paper tube 10, a first oil blocking device 5 is arranged at the same position of the first oil duct and the third oil duct, the first oil blocking device 5 divides the first oil duct into a lower first oil duct and an upper first oil duct, the lower first oil duct and the upper first oil duct are not communicated with each other, the first oil blocking device 5 divides the third oil duct into a lower third oil duct and an upper third oil duct, the lower third oil duct and the upper third oil duct are not communicated with each other, the lower third oil duct is communicated with the second oil duct through an S-shaped oil duct after being communicated with the lower first oil duct at the lower position of the coil and the spool 1, the second oil duct is connected with external oil duct equipment, the fourth oil duct is communicated with the external oil duct through the S-shaped oil duct after being communicated with the upper first oil duct at the upper position of the coil and the spool 1, a first through hole 3 is arranged at the lower side of the first oil blocking device 5, a second through hole 4 is arranged at the upper side of the first oil blocking device 5, and the first through hole 3 communicates the lower first oil duct, the fourth oil duct and the upper third oil duct are communicated through the second through hole 4, the second oil blocking device 6 is arranged at the bottom of the second oil duct, a third oil blocking device 11 is arranged in the fourth oil duct and at the position corresponding to the second through hole 4, the first oil blocking device 5 is a partition plate arranged between the coil and the wire cake 1, the second oil blocking device 6 is a sealing ring installed between the first paper tube 7 and the second paper tube 8 in a matched mode, and the third oil blocking device 11 is a sealing ring installed between the third paper tube 9 and the fourth paper tube 10 in a matched mode.
When the cooling oil line is used, cold oil enters through the third oil duct and the fourth oil duct respectively, the cold oil is subjected to heat exchange with the lower coil and the spool 1 through the third oil duct, then passes through the S-shaped oil duct, the lower first oil duct and then is discharged through the second oil duct, and the cold oil is subjected to heat exchange with the upper coil and the spool 1 through the fourth oil duct, then passes through the S-shaped oil duct, the upper first oil duct and then is discharged through the upper first oil duct.
The first paper cylinder 7 is formed by connecting hard paper cylinders with the thickness of 5mm, and the second paper cylinder 8, the third paper cylinder 9 and the fourth paper cylinder 10 are formed by connecting hard paper cylinders with the thickness of 2 mm.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (8)
1. The utility model provides a transformer oil circuit structure which characterized in that: the coil and spool structure comprises coils and spools (1), wherein a plurality of coils and spools (1) are sequentially arranged from top to bottom, oil baffle plates (2) are arranged among the plurality of coils and spools (1), the oil baffle plates (2) are alternately arranged from left to right to form S-shaped oil passages on the coils and spools (1), first oil passages and second oil passages are sequentially arranged on the inner sides of the coils and spools (1), third oil passages and fourth oil passages are sequentially arranged on the outer sides of the coils and spools (1), the first oil passages are divided into lower first oil passages and upper first oil passages, the lower first oil passages are not communicated with the upper first oil passages, the third oil passages are divided into lower third oil passages and upper third oil passages, the lower third oil passages are not communicated with the upper third oil passages, and the lower third oil passages are communicated with the lower first oil passages at the lower parts of the coils and spools (1), the coil and spool are communicated with the second oil duct through the S-shaped oil duct, the second oil duct is connected with external oil-way equipment, and the fourth oil duct is communicated with the upper first oil duct at the upper part of the coil and spool (1) and then is connected with the external oil-way equipment through the S-shaped oil duct.
2. The transformer oil circuit structure according to claim 1, characterized in that: a first paper tube (7) is arranged on the inner side of the coil and wire cake (1), a second paper tube (8) is arranged on the inner side of the first paper tube (7), a first oil duct is formed between the coil and wire cake (1) and the first paper tube (7), a second oil duct is formed between the first paper tube (7) and the second paper tube (8), a third paper tube (9) is arranged on the outer side of the coil and wire cake (1), a fourth paper tube (10) is arranged on the outer side of the third paper tube (9), a third oil duct is formed between the coil and wire cake (1) and the third paper tube (9), a fourth oil duct is formed between the third paper tube (9) and the fourth paper tube (10), a first oil blocking device (5) is arranged at the same position of the first oil duct and the third oil duct, and the first oil blocking device (5) divides the first oil duct into a lower first oil duct and an upper first oil duct, the lower first oil duct and the upper first oil duct are not communicated with each other, the third oil duct is divided into a lower third oil duct and an upper third oil duct by the first oil blocking device (5), the lower third oil duct and the upper third oil duct are not communicated with each other, the lower third oil duct is communicated with the second oil duct through the S-shaped oil duct after being communicated with the lower first oil duct at the lower part of the coil and the spool (1), the second oil duct is connected with external oil-way equipment, and the fourth oil duct is communicated with the upper first oil duct at the upper part of the coil and the spool (1) and is connected with the external oil-way equipment through the S-shaped oil duct.
3. The transformer oil circuit structure according to claim 2, characterized in that: the oil-retaining device is characterized in that a first through hole (3) is formed in the lower side of the first oil-retaining device (5), a second through hole (4) is formed in the upper side of the first oil-retaining device (5), the first through hole (3) is communicated with the lower first oil duct and the second oil duct, and the second through hole (4) is communicated with the fourth oil duct and the upper third oil duct.
4. The transformer oil path structure according to any one of claims 1 to 3, characterized in that: and a second oil retaining device (6) is arranged at the bottom of the second oil duct.
5. The transformer oil path structure according to any one of claims 1 to 3, characterized in that: and a third oil retaining device (11) is arranged in the fourth oil duct at the position corresponding to the second through hole (4).
6. The transformer oil path structure according to claim 2 or 3, characterized in that: the first oil blocking device (5) is a partition plate arranged between the coil and the wire cake (1).
7. The transformer oil circuit structure according to claim 4, characterized in that: the second oil retaining device (6) is a sealing ring which is installed between the first paper tube (7) and the second paper tube (8) in a matched mode.
8. The transformer oil circuit structure according to claim 5, characterized in that: the third oil retaining device (11) is a sealing ring which is installed between the third paper tube (9) and the fourth paper tube (10) in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011414095.3A CN112599337B (en) | 2020-12-03 | 2020-12-03 | Transformer oil circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011414095.3A CN112599337B (en) | 2020-12-03 | 2020-12-03 | Transformer oil circuit structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112599337A true CN112599337A (en) | 2021-04-02 |
| CN112599337B CN112599337B (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011414095.3A Active CN112599337B (en) | 2020-12-03 | 2020-12-03 | Transformer oil circuit structure |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903480A (en) * | 2012-10-25 | 2013-01-30 | 中国西电电气股份有限公司 | Transformer oil way structure |
| CN103123857A (en) * | 2013-03-01 | 2013-05-29 | 山东达驰电气有限公司 | Transformer coil bending-shaped oil guide system |
| CN203415376U (en) * | 2013-07-26 | 2014-01-29 | 武汉变压器有限责任公司 | Pie winding with oil guide paper tube |
| CN107845485A (en) * | 2017-12-06 | 2018-03-27 | 吴江变压器有限公司 | A kind of device body cooling structure for being used for transformer or reactor |
| CN107993817A (en) * | 2017-12-21 | 2018-05-04 | 海安科皓纺织有限公司 | The oil-immersed transformer of transformer coil guide oil channel and the application device |
| CN209708787U (en) * | 2019-06-26 | 2019-11-29 | 西安西变中特电气有限责任公司 | Coil for high-power transformer |
| CN111341539A (en) * | 2020-04-09 | 2020-06-26 | 特变电工衡阳变压器有限公司 | Transformer and transformer winding thereof |
-
2020
- 2020-12-03 CN CN202011414095.3A patent/CN112599337B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903480A (en) * | 2012-10-25 | 2013-01-30 | 中国西电电气股份有限公司 | Transformer oil way structure |
| CN103123857A (en) * | 2013-03-01 | 2013-05-29 | 山东达驰电气有限公司 | Transformer coil bending-shaped oil guide system |
| CN203415376U (en) * | 2013-07-26 | 2014-01-29 | 武汉变压器有限责任公司 | Pie winding with oil guide paper tube |
| CN107845485A (en) * | 2017-12-06 | 2018-03-27 | 吴江变压器有限公司 | A kind of device body cooling structure for being used for transformer or reactor |
| CN107993817A (en) * | 2017-12-21 | 2018-05-04 | 海安科皓纺织有限公司 | The oil-immersed transformer of transformer coil guide oil channel and the application device |
| CN209708787U (en) * | 2019-06-26 | 2019-11-29 | 西安西变中特电气有限责任公司 | Coil for high-power transformer |
| CN111341539A (en) * | 2020-04-09 | 2020-06-26 | 特变电工衡阳变压器有限公司 | Transformer and transformer winding thereof |
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| CN112599337B (en) | 2021-12-07 |
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