CN202473541U - Transformer coil structure - Google Patents
Transformer coil structure Download PDFInfo
- Publication number
- CN202473541U CN202473541U CN2012200267112U CN201220026711U CN202473541U CN 202473541 U CN202473541 U CN 202473541U CN 2012200267112 U CN2012200267112 U CN 2012200267112U CN 201220026711 U CN201220026711 U CN 201220026711U CN 202473541 U CN202473541 U CN 202473541U
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- China
- Prior art keywords
- coil
- air flue
- coil assembly
- transformer
- coil groups
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- Expired - Lifetime
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- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model relates to the field of electrical equipment, particularly a transformer coil structure which comprises a plurality of coil assemblies, wherein the coils at the head and tail ends form the first coil assembly, and the coils between the head and tail ends sequentially form the second coil assembly, the third coil assembly and the fourth coil assembly from bottom to top; the third coil assembly is provided with a plurality of interruption points and connection lines; an air duct of the interruption points of the third coil assembly is the biggest air duct; and an air duct of the second coil assembly is the smallest air duct. In consideration of many factors of the transformer coils in the application process, the utility model further optimizes the coil structure; and the coils are divided into the multiple coil assemblies, the air ducts are arranged more reasonably according to the actual conditions, thereby enhancing the compressive strength, ensuring favorable heat dissipation effect and further saving the material and the manufacturing cost.
Description
Technical field
The utility model relates to the electric equipment field, particularly a kind of transformer coil structure.
Background technology
Manufacturing and designing in the process at transformer; Usually the air flue between the winding wire cake (or air channel) is arranged to even distribution; Be 200820189293.2 in the patent No., name is called in the utility model patent of " dry-type transformer coil ", the air flue between coil arranged carried out design again, and the air flue of the first half is designed to big airways; The air flue of Lower Half is designed to little air flue, has improved radiating effect.
Yet transformer coil in use, and its performance receives the influence of many factors, and in order to save coil method, except considering the heat radiation factor, factors such as dielectric strength are not allowed to ignore yet.
The utility model content
The utility model has overcome above-mentioned shortcoming, provides a kind of dielectric strength high, rational in infrastructure transformer coil structure.
The technical scheme that its technical problem of the utility model solution is taked is: a kind of transformer coil structure; Comprise a plurality of coil groups; Head and end at coil is first coil groups, is followed successively by second coil groups, tertiary coil group and the 4th coil groups between the head and end from bottom to top, and said tertiary coil group has the point of interruption and line; The air flue of the said point of interruption is maximum air flue, and the air flue of second coil groups is minimum air flue.
One or more line cake skins in said first coil groups can add the bag insulating barrier.
The air flue of said first coil groups can be more than or equal to the air flue of the 4th coil groups.
The air flue of said tertiary coil group can be more than or equal to the air flue of the 4th coil groups.
The first end of line cake number in said first coil groups can respectively be 1～6.
The utility model is considered transformer coil many factors in use; Further optimized loop construction; Through coil being divided into a plurality of coil groups; More reasonably arrange air flue according to actual conditions, not only improved compressive resistance but also guaranteed better heat radiating effect, can also further save material and manufacturing cost.
Description of drawings
Fig. 1 is the loop construction sketch map of the utility model.
Embodiment
As shown in fig. 1 is the loop construction sketch map of the utility model, and some line cakes of coil are divided into a plurality of coil groups, is first coil groups 1 at the head and end of coil; Be followed successively by second coil groups 2, tertiary coil group 3 and the 4th coil groups 4 between the head and end from bottom to top; Wherein, said tertiary coil group 3 has the point of interruption and line, because point of interruption place insulating requirements is higher; And to draw line; The air flue of the said point of interruption is maximum air flue, can improve the dielectric strength between the line cake, especially industrial frequency withstand voltage intensity.According to actual needs, the air flue of said tertiary coil group 3 can be more than or equal to the air flue of the 4th coil groups 4.
In said first coil groups 1 of coil head and end, the skin of each line cake adds the bag insulating barrier, promptly becomes the reinforcement cake; Improved the dielectric strength of 5 of line cake and iron yokes; Therefore can reduce the distance B of 5 of first terminal surface of coil and iron yokes accordingly, thereby reduce the height of core limb, save core material; Also can reduce simultaneously the insulating material (in figure do not indicate) of additional pads, further reduce cost in the coil two ends.According to actual needs, the first end of the line cake number in said first coil groups 1 respectively is 1～6.
In this simultaneously, for improving the impulse withstand voltage intensity of coil head and end, also can increase the air flue of said first coil groups 1.Especially in 35KV and above transformer, through strengthening the transverse air channel of first last two group of first coil groups 1, compressive resistance is greatly improved, and, also, this group line cake brings convenience for adding the bag insulating process.According to actual needs, the air flue of said first coil groups 1 can be designed to the air flue more than or equal to the 4th coil groups 4.
And consider that transformer is in running; Totally still temperature is increasingly high from bottom to up for coil; In order to satisfy the heat radiation requirement; The air flue that the air flue on coil top (i.e. the 4th coil groups 4) will be compared lower part (i.e. second coil groups 2) is bigger, and therefore, the air flue of second coil groups 2 is minimum air flue.
The utility model has been optimized loop construction, through coil being divided into a plurality of coil groups, more reasonably arranges air flue according to actual conditions, has not only improved compressive resistance but also guaranteed better heat radiating effect, can also further save material and manufacturing cost.The utility model is applicable to transformer high-voltage coil, can adopt positive and negative cake continous way or complete positive cake continous way coiling, and applied transformer comprises dry type or oil-filled transformer, three dimensional wound core transformer or plane deformation depressor.
The foregoing description only be for explain clearly that the invention does for example, and be not qualification to the invention embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And conspicuous variation of being extended out thus or change still are among the protection range of the invention claim.
Claims (5)
1. transformer coil structure; It is characterized in that: comprise a plurality of coil groups; Head and end at coil is first coil groups, is followed successively by second coil groups, tertiary coil group and the 4th coil groups between the head and end from bottom to top, and said tertiary coil group has the point of interruption and line; The air flue of the said point of interruption is maximum air flue, and the air flue of second coil groups is minimum air flue.
2. transformer coil structure according to claim 1 is characterized in that: the one or more line cake skins in said first coil groups add the bag insulating barrier.
3. transformer coil structure according to claim 1 and 2 is characterized in that: the air flue of said first coil groups is more than or equal to the air flue of the 4th coil groups.
4. transformer coil structure according to claim 1 and 2 is characterized in that: the air flue of said tertiary coil group is more than or equal to the air flue of the 4th coil groups.
5. transformer coil structure according to claim 3 is characterized in that: the end respectively is 1～6 headed by the line cake number in said first coil groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200267112U CN202473541U (en) | 2012-01-19 | 2012-01-19 | Transformer coil structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200267112U CN202473541U (en) | 2012-01-19 | 2012-01-19 | Transformer coil structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473541U true CN202473541U (en) | 2012-10-03 |
Family
ID=46921685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200267112U Expired - Lifetime CN202473541U (en) | 2012-01-19 | 2012-01-19 | Transformer coil structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851561A (en) * | 2015-05-07 | 2015-08-19 | 海鸿电气有限公司 | Heat dissipation structure of stereoscopic wound-core open dry-type transformer coil |
-
2012
- 2012-01-19 CN CN2012200267112U patent/CN202473541U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851561A (en) * | 2015-05-07 | 2015-08-19 | 海鸿电气有限公司 | Heat dissipation structure of stereoscopic wound-core open dry-type transformer coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |