CN201237968Y - Coil structure of dry-type transformer - Google Patents
Coil structure of dry-type transformer Download PDFInfo
- Publication number
- CN201237968Y CN201237968Y CNU2008200677924U CN200820067792U CN201237968Y CN 201237968 Y CN201237968 Y CN 201237968Y CN U2008200677924 U CNU2008200677924 U CN U2008200677924U CN 200820067792 U CN200820067792 U CN 200820067792U CN 201237968 Y CN201237968 Y CN 201237968Y
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- coil
- sections
- transformer
- reduced
- dry
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Abstract
The utility model discloses a dry type transformer coil structure, which comprises a plurality of sectioned and layered coil sections, and the number of the sections of each coil is even. The coil structure has the following characteristics: the number of the layers of each coil section can be odd or even; the first and the last sections are located at the outmost layers; from the first layer to the last layer, the turn number of each wound coil section is gradually reduced; the electric clearance between each two coil sections is designed according to voltage gradients; the maximum voltage gradient among the coil sections is on the two adjacent sections located in the middle of the coil; and the coil sections are formed into a tower-shaped structure. Consequently, the gaps in the coil are reduced, the local discharge magnitude is lowered, electrical properties are good, moreover, the usage of iron cores is reduced as compared with the prior transformer with the same turn number at each layer, the cost of the transformer is reduced as well.
Description
Technical field
The utility model relates to the transformer technology field, particularly a kind of epoxy cast dry transformer coil.
Background technology
The dry-type transformer that generally uses on the present domestic market, the general epoxy casting formula coil that adopts, in traditional design, coil is made up of a plurality of line segments, the number of turn that coil is every layer is all basic identical, choose apart from connecing big intersegmental operating voltage between line segment, the distance of adjacent segments is equal, along with the increase of hop count, the packing space of line segment increases, coil height increases, and the iron core consumption is many, causes cost to increase.
The utility model content
It is a kind of by the voltage distribution design that the purpose of this utility model is to provide, and reduces the interlayer operating voltage, reduces intersegmental filling gap, guarantees the loop construction of transformer electrical safety performance, reduction transformer cost.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of dry-type transformer coil structure, comprise segmented layered some coil segments, the hop count of each coil is an even number, it is characterized in that: the number of plies of coil segment can be selected odd number or even number, first section and latter end are at outermost layer, each coil segment is from ground floor one deck to the end, and the number of turn of coiling reduces successively.
Wherein, the outermost layer of the first line segment of coil is the end of incoming cables, and the outermost layer of last line segment is a leading-out terminal, and two sections outermost layers in middle part or inferior skin are drawn the pressure regulation tap.
The beneficial effects of the utility model are: the intersegmental electric clearance of winding wire is by the voltage gradient design, adjacent two sections of maximum voltage gradient between line segment at the coil middle part, line segment forms tower structure, reduced the coil inside space, reduce partial discharge quantity, electric property is good, and the more every layer of transformer reduction that the number of turn is identical of iron core consumption, and the transformer cost also descends.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the schematic diagram of the utility model coil segment layer number of turn.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
With reference to shown in Figure 1, a kind of dry-type transformer coil structure, comprise segmented layered some coil segments, the hop count of each coil is an even number, the intersegmental electric clearance of winding wire is by the voltage gradient design, adjacent two sections of maximum voltage gradient between line segment at the coil middle part, the coil hop count is decided on demand, the number of plies of coil segment can be selected odd number or even number, first section at outermost layer, every section number of turn is total number of turns/coil hop count, each line segment is from ground floor one deck to the end, the number of turn of coiling reduces successively, wherein, the outermost layer of the first line segment of coil is the end of incoming cables, the outermost layer of end line segment is a leading-out terminal, two sections outermost layers in middle part or inferior skin are drawn the pressure regulation tap, the end line A of first line segment 1 is end of incoming cables 6, the end line X of the 4th line segment 4 is a leading-out terminal 7, skin at second line segment 2 outwards leads to end line X2, X4, X6 is as the pressure regulation shunting tap, skin at the 3rd line segment 3 outwards leads to end line X3, X5, X7 is as the pressure regulation shunting tap, because the intersegmental electric clearance of winding wire is by the voltage gradient design, adjacent two sections of maximum voltage gradient between line segment at the coil middle part, line segment forms tower structure, has reduced the coil inside space, reduce partial discharge quantity, electric property is good, and the more every layer of transformer reduction that the number of turn is identical of iron core consumption, and the transformer cost also descends.
Above-mentioned just the utility model preferred embodiment but should not constitute restriction of the present utility model, so long as adopt the technical scheme that is equal to the utility model, and also should be within the protection range of the invention.
Claims (2)
1, a kind of dry-type transformer coil structure, comprise segmented layered some coil segments, the hop count of each coil is an even number, it is characterized in that: the number of plies of coil segment can be selected odd number or even number, first section and latter end are at outermost layer, each coil segment is from ground floor one deck to the end, and the number of turn of coiling reduces successively.
2, a kind of dry-type transformer coil structure according to claim 1 is characterized in that, the outermost layer of the first line segment of coil is the end of incoming cables, and the outermost layer of last line segment is a leading-out terminal, and two sections outermost layers in middle part or inferior skin are drawn the pressure regulation tap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200677924U CN201237968Y (en) | 2008-06-16 | 2008-06-16 | Coil structure of dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200677924U CN201237968Y (en) | 2008-06-16 | 2008-06-16 | Coil structure of dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201237968Y true CN201237968Y (en) | 2009-05-13 |
Family
ID=40650703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200677924U Expired - Fee Related CN201237968Y (en) | 2008-06-16 | 2008-06-16 | Coil structure of dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201237968Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468042A (en) * | 2010-11-16 | 2012-05-23 | 苏州东源天利电器有限公司 | Dry type distribution transformer |
| CN105097236A (en) * | 2015-08-26 | 2015-11-25 | 人民电器集团江苏斯诺成套设备工程有限公司 | Low temperature rise dry-type transformer |
| CN105719814A (en) * | 2016-04-08 | 2016-06-29 | 国家电网公司 | High voltage coil which is applicable to a dry type transformer of more than 35kV and contains an airway structure |
-
2008
- 2008-06-16 CN CNU2008200677924U patent/CN201237968Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468042A (en) * | 2010-11-16 | 2012-05-23 | 苏州东源天利电器有限公司 | Dry type distribution transformer |
| CN105097236A (en) * | 2015-08-26 | 2015-11-25 | 人民电器集团江苏斯诺成套设备工程有限公司 | Low temperature rise dry-type transformer |
| CN105097236B (en) * | 2015-08-26 | 2017-09-26 | 人民电器集团江苏斯诺成套设备工程有限公司 | Low-temperature-rise dry-type transformer |
| CN105719814A (en) * | 2016-04-08 | 2016-06-29 | 国家电网公司 | High voltage coil which is applicable to a dry type transformer of more than 35kV and contains an airway structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20120616 |