CN202332524U - Coil structure capable of reducing hot-point temperature rise of transformer - Google Patents
Coil structure capable of reducing hot-point temperature rise of transformer Download PDFInfo
- Publication number
- CN202332524U CN202332524U CN201120496767XU CN201120496767U CN202332524U CN 202332524 U CN202332524 U CN 202332524U CN 201120496767X U CN201120496767X U CN 201120496767XU CN 201120496767 U CN201120496767 U CN 201120496767U CN 202332524 U CN202332524 U CN 202332524U
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- conductor
- transformer
- coil
- temperature rise
- composite conductor
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Abstract
The utility model relates to a coil structure capable of reducing the hot-point temperature rise of a transformer, belonging to the technical field of the transformer. The technical proposal of the coil structure is as follows: the coil structure comprises a coil, a radial combined conductor (3) and an axial combined conductor (4); and the radial combined conductor is arranged at the middle part of the coil, while the axial combined copper conductor is arranged at the end portions of the coil. Each of the radial combined conductor and the axial combined conductor is composed of a copper conductor (1) and insulating paper (2); the radial combined conductor and the axial combined conductor are wound by using copper conductors different in specification; and the total sectional areas of the copper conductors of the two specifications are similar. The coil structure capable of reducing the hot-point temperature rise of the transformer has the advantages of effectively reducing the eddy-current loss of the end portions of the coil of a high-capacity transformer, reducing the hot-point temperature rise of the end portions of the coil of the transformer and improving the safety and reliability of the transformer in operation; and such a coil structure can be widely applied to the high-capacity transformer.
Description
Technical field
The utility model relates to a kind of loop construction that reduces the transformer temperature rise of hot spot, belongs to the transformer technology field.
Background technology
The temperature rise at the hottest point of transformer and its leakage field distribute closely related.The end of transformer coil is owing to the bending of the magnetic line of force and the existence of uneven ampere-turn, and laterally leakage field is more concentrated.For high-power transformer, if the horizontal eddy current loss of end winding is very big, possibly cause the end winding local overheating, temperature rise of hot spot is too high.Finally cause the heat ageing and the puncture of insulating material.
The utility model content
The purpose of the utility model provides a kind of loop construction that reduces the transformer temperature rise of hot spot; Reduce the eddy current loss of high-power transformer end winding effectively; Reduce the temperature rise of hot spot of transformer coil end; Improve the security reliability of transformer operation, solve the problems referred to above that background technology exists.
The technical scheme of the utility model is: a kind of loop construction that reduces the transformer temperature rise of hot spot, comprise coil, the width of cloth to composite conductor and axial composite conductor, and the coil middle part is provided with the width of cloth to composite conductor, and end winding is provided with axial combination copper conductor.
The width of cloth is made up of copper conductor and insulating paper to composite conductor and axial composite conductor, and the width of cloth adopts the copper conductor coiling of different size to form to composite conductor and axial composite conductor, and the total sectional area of two kinds of specification copper conductors is close; Different according to transformer capacity, can adopt single combination copper conductor, also can adopt many combination copper conductors and around.The width of cloth adopts the less copper conductor of little line leptoprosopy size to composite conductor, and axially composite conductor adopts the less copper conductor of little live width face size.The link position of two kinds of different size copper conductors is through being welded to connect.
Through special-purpose stray field program leakage field is distributed and to calculate, the coil central region of relatively concentrating at vertical leakage field adopts the width of cloth to the combination copper conductor, and the little line leptoprosopy in the composite conductor adopts less size, can effectively reduce the eddy current loss that is caused by vertical leakage field.Adopt the axial copper conductor that makes up in the end winding zone that horizontal leakage field is relatively concentrated, the little live width face in the composite conductor adopts less size, can effectively reduce the eddy current loss that is caused by horizontal leakage field.Because coil upper end portion oil temperature is higher, the focus of general coil is in coil upper end portion, through the control to end winding eddy current loss, reaches the purpose that reduces transformer coil upper end temperature rise of hot spot.
The good effect of the utility model: reduce the eddy current loss of high-power transformer end winding effectively, reduce the temperature rise of hot spot of transformer coil end, improve the security reliability of transformer operation; This kind loop construction can be widely used in high-power transformer.
Description of drawings
Accompanying drawing 1 is that the width of cloth is to the composite conductor sectional view;
Accompanying drawing 2 is axial composite conductor sectional views;
Accompanying drawing 3 is that the width of cloth connects sketch map to composite conductor and the axial single little line joint welding of composite conductor;
Accompanying drawing 4 is the utility model embodiment sketch mapes;
Among the figure: 1-copper conductor, 2-insulating paper, the 3-width of cloth are to composite conductor, the axial composite conductor of 4-, 5-pad, 6-stay.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further specified through embodiment.
A kind of loop construction that reduces the transformer temperature rise of hot spot comprises coil, the width of cloth to composite conductor 3 and axial composite conductor 4, and the coil middle part is provided with the width of cloth to composite conductor, and end winding is provided with axial combination copper conductor.The width of cloth is made up of copper conductor 1 and insulating paper 2 to composite conductor and axial composite conductor, and the width of cloth adopts the copper conductor coiling of different size to form to composite conductor and axial composite conductor, and the total sectional area of two kinds of specification copper conductors is close; Different according to transformer capacity, can adopt single combination copper conductor, also can adopt many combination copper conductors and around.The width of cloth adopts the less copper conductor of little line leptoprosopy size to composite conductor, and axially composite conductor adopts the less copper conductor of little live width face size.The link position of two kinds of different size copper conductors is through being welded to connect.
Execution mode more specifically:
Present embodiment adopts the width of cloth to carry out coiling to the lead of composite conductor (with reference to accompanying drawing 1) and axial two kinds of different sizes of composite conductor (with reference to accompanying drawing 2).The width of cloth is adopted to the composite conductor coiling in the zone at coil middle part, calculates according to the stray field process analysis, begins to adopt axial composite conductor coiling in certain section near end winding.The weldering of copper phosphorus is adopted in the welding of two kinds of leads, and the lead of two kinds of various combination patterns is taken apart respectively, and every little line welds shown in accompanying drawing 3; The joint welding groove of partly polishing before the weldering, postwelding polishes, and every little line adds bag crimped paper half lap one deck more separately by the insulation of regulation bag after the weldering number; Every little line replaces separately.Two kinds of leads are chosen in outside transposition and connect, and make the pad of two kinds of leads just in time be in the S crook of transposition.After treating that all little lines are changed to next section fully, again to the composite conductor full packaged insulation materials.Make the lead smooth transition of two kinds of different sizes.
Claims (2)
1. a loop construction that reduces the transformer temperature rise of hot spot is characterized in that comprising coil, the width of cloth to composite conductor (3) and axial composite conductor (4), and the coil middle part is provided with the width of cloth to composite conductor, and end winding is provided with axial combination copper conductor.
2. a kind of loop construction that reduce transformer temperature rise of hot spot according to claim 1; It is characterized in that the width of cloth is made up of copper conductor (1) and insulating paper (2) to composite conductor and axial composite conductor; The width of cloth adopts the copper conductor coiling of different size to form to composite conductor and axial composite conductor, and the total sectional area of two kinds of specification copper conductors is close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120496767XU CN202332524U (en) | 2011-12-05 | 2011-12-05 | Coil structure capable of reducing hot-point temperature rise of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120496767XU CN202332524U (en) | 2011-12-05 | 2011-12-05 | Coil structure capable of reducing hot-point temperature rise of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202332524U true CN202332524U (en) | 2012-07-11 |
Family
ID=46444496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120496767XU Expired - Lifetime CN202332524U (en) | 2011-12-05 | 2011-12-05 | Coil structure capable of reducing hot-point temperature rise of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202332524U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795216A (en) * | 2015-04-14 | 2015-07-22 | 国家电网公司 | Transformer coil based on composite conductor |
| CN107068357A (en) * | 2017-06-15 | 2017-08-18 | 深圳市信维通信股份有限公司 | A kind of induction coil structure and preparation method for wireless charging device |
| CN111128528A (en) * | 2019-12-03 | 2020-05-08 | 保定天威集团特变电气有限公司 | Transformer coil with low eddy current loss |
-
2011
- 2011-12-05 CN CN201120496767XU patent/CN202332524U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795216A (en) * | 2015-04-14 | 2015-07-22 | 国家电网公司 | Transformer coil based on composite conductor |
| CN107068357A (en) * | 2017-06-15 | 2017-08-18 | 深圳市信维通信股份有限公司 | A kind of induction coil structure and preparation method for wireless charging device |
| CN111128528A (en) * | 2019-12-03 | 2020-05-08 | 保定天威集团特变电气有限公司 | Transformer coil with low eddy current loss |
| CN111128528B (en) * | 2019-12-03 | 2021-12-07 | 保定天威集团特变电气有限公司 | Transformer coil with low eddy current loss |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAODING TIANWEI BAOBIAN ELECTRIC CO., LTD. Free format text: FORMER OWNER: BAODING TIANWEI GROUP CO., LTD. Effective date: 20131122 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 071051 BAODING, HEBEI PROVINCE TO: 071056 BAODING, HEBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131122 Address after: 071056 West Road, Hebei, Baoding, No. 2222, No. Patentee after: Baoding Tianwei Baobian Electric Co., Ltd. Address before: 071051, Hebei City, Baoding province ginkgo Road, No. 198 Jin Di garden complex Patentee before: Baoding Tianwei Group Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |