CN202678070U - Yoke shield of converter transformer and shielding structure of yoke shield - Google Patents
Yoke shield of converter transformer and shielding structure of yoke shield Download PDFInfo
- Publication number
- CN202678070U CN202678070U CN 201220299085 CN201220299085U CN202678070U CN 202678070 U CN202678070 U CN 202678070U CN 201220299085 CN201220299085 CN 201220299085 CN 201220299085 U CN201220299085 U CN 201220299085U CN 202678070 U CN202678070 U CN 202678070U
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- CN
- China
- Prior art keywords
- yoke
- converter transformer
- shielding
- braid
- carbon paper
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- Expired - Lifetime
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Abstract
The utility model provides a yoke shield of a converter transformer and a shielding structure of the yoke shield. The yoke shield comprises four layers of paperboards, carbon paper and a braided strap, wherein the carbon paper and the braided strap are clamped among the four layers of paperboards, the carbon paper is positioned in the middle of the paperboards, and an outlet head at one end of the braided strap penetrates out of the paperboards. The yoke shield is placed between upper and lower yokes and coils and is used for shielding the yoke sharp corner at the upper end of the coils, the maximum electric field of the yoke surface is reduced, the transformer partial discharge is reduced, and the operation reliability is improved. Because of the effect of the yoke shield, the electric field at the yoke part is nearly zero, the yoke sharp corner cannot generate the partial discharge, the partial discharge reduction is reached, and the reliability requirement is improved. The yoke shield has the advantages that the material cost is low, and the economy of products is improved.
Description
Technical field
The utility model relates to the transformer technology field, particularly a kind of converter transformer iron yoke shielding and shielding construction thereof.
Background technology
In the existing converter transformer device body, adopt magnetic shunt that the iron yoke is shielded, but in the low capacity change of current becomes, because leakage field is less, adopt magnetic shunt relatively to waste material.
The utility model content
The purpose of this utility model is to provide a kind of converter transformer iron yoke shielding and shielding construction thereof, to solve the problems of the technologies described above.
For achieving the above object, the utility model adopts following technical scheme:
A kind of converter transformer iron yoke shielding comprises four layer paperboards, carbon paper and braid over braid; Four layer paperboards are sandwiched in carbon paper and braid over braid wherein, and carbon paper is positioned in the middle of the cardboard, and one of braid over braid brings out head and passes cardboard.
Preferably, carbon paper contacts described braid over braid; The side that carbon paper contacts described braid over braid has the nest limit.
Preferably, the edge of four layer paperboards passes through rivet.
Preferably, described braid over braid is copper braid over braid.
A kind of converter transformer iron yoke shielding construction, between converter transformer lower yoke and the coil, all be placed with the shielding of converter transformer iron yoke between upper yoke and the coil; Be positioned over lifting one's head and being positioned over upper yoke and being connected the converter transformer folder with lifting one's head of converter transformer iron yoke shielding between the coil of converter transformer iron yoke shielding between lower yoke and the coil.
Compared with prior art, the utility model has the following advantages at least: the utility model is used for shielded coil upper end iron yoke wedge angle by the shielding of iron yoke is positioned between upper and lower iron yoke and the coil, reduces iron yoke surface maximum field, reduce transformer partial discharge, improve operational reliability; Because the effect of iron yoke shielding, the electric field at iron yoke place is almost nil, and iron yoke wedge angle can not produce the part, reaches reduction office and puts, and improves the requirement of reliability; The utility model iron yoke shielding material cost is low, improves product economy.
Description of drawings
Fig. 1 is the partial schematic diagram of placing the upper yoke shielding;
Fig. 2 is the partial schematic diagram of placing the lower yoke shielding;
Fig. 3 is the structural representation of iron yoke shielding;
Fig. 4 is the cutaway view of Fig. 3.
Embodiment
See also Fig. 1 to shown in Figure 4, a kind of converter transformer iron of the utility model yoke shielding (2,4) comprises four layer paperboards 8, carbon paper 7 and copper braid over braid 6; Four layer paperboards 8 are sandwiched in carbon paper 7 and copper braid over braid 6 wherein, and carbon paper 7 is positioned in the middle of the cardboard 8, and copper braid over braid 6 is between carbon paper 7 and coil, and carbon paper 7 is to coil sides nest limit; The edge of four layer paperboards 8 passes through rivet; One of copper braid over braid 6 brings out 5 and passes cardboard 8.
A kind of converter transformer iron of the utility model yoke shielding construction is placed lower yoke shielding 4 between lower yoke 3 and coil, place upper yoke shielding 2 between upper yoke 1 and coil; One of copper braid over braid 6 brings out 5 and passes the folder that cardboard 8 connects converter transformers.
Put into iron yoke shielding (2,4) afterwards between iron yoke (1,3) and coil, because the effect of iron yoke shielding (2,4), the electric field that iron yoke (1,3) is located is almost nil, and iron yoke wedge angle can not produce the part, reaches reduction office and puts, and improves the requirement of reliability.The utility model iron yoke shielding material cost is low, improves product economy.
During assembling, may further comprise the steps:
1, after iron core erects, places lower yoke shielding 4;
2, lower yoke shielding 4 is put into after the position assembling or suit coil;
3, upper yoke shielding 2 is placed in all coils and the insulation discharge postpone that puts in place;
4, upper yoke shielding 2 is put into after the position, edge upper yoke 1;
5, after upper yoke 1 installation, lifting one's head of upper and lower iron yoke shielding 2,45 is connected on the apparatus for fixing transformer; Lifting one's head of litzendraht wire 65 is connected to above the apparatus for fixing transformer, makes iron yoke shielding (2,4) and iron yoke (1,3) equipotential.
The above only is a kind of execution mode of the present utility model, it or not whole or unique execution mode, the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model specification is claim of the present utility model and contains.
Claims (5)
1. a converter transformer iron yoke shielding is characterized in that, comprises four layer paperboards (8), carbon paper (7) and braid over braid (6); Four layer paperboards (8) are sandwiched in carbon paper (7) and braid over braid (6) wherein, and carbon paper (7) is positioned in the middle of the cardboard (8), and one of braid over braid (6) brings out head (5) and passes cardboard (8).
2. a kind of converter transformer iron yoke shielding according to claim 1 is characterized in that, carbon paper (7) contacts described braid over braid (6); The side that carbon paper (7) contacts described braid over braid (6) has the nest limit.
3. a kind of converter transformer iron yoke shielding construction according to claim 1 is characterized in that, the edge of four layer paperboards (8) passes through rivet.
4. a kind of converter transformer iron yoke shielding according to claim 1 is characterized in that, described braid over braid (6) is copper braid over braid.
5. a converter transformer iron yoke shielding construction is characterized in that, all is placed with each described converter transformer iron yoke shielding in the claim 1 to 4 between converter transformer lower yoke and coil, between upper yoke (1) and the coil; Be positioned over the lifting one's head of converter transformer iron yoke shielding between lower yoke and the coil (5) and be positioned over upper yoke and be connected the converter transformer folder with lift one's head (5) that converter transformer iron yoke between the coil shields.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299085 CN202678070U (en) | 2012-06-25 | 2012-06-25 | Yoke shield of converter transformer and shielding structure of yoke shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299085 CN202678070U (en) | 2012-06-25 | 2012-06-25 | Yoke shield of converter transformer and shielding structure of yoke shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678070U true CN202678070U (en) | 2013-01-16 |
Family
ID=47498956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220299085 Expired - Lifetime CN202678070U (en) | 2012-06-25 | 2012-06-25 | Yoke shield of converter transformer and shielding structure of yoke shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678070U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110060848A (en) * | 2019-05-20 | 2019-07-26 | 保定天威保变电气股份有限公司 | A kind of converter power transformer improves the structure and its method of upper yoke lower part electric field |
| CN110211784A (en) * | 2019-05-28 | 2019-09-06 | 南通晓星变压器有限公司 | It is a kind of replace traditionally shielding shield manufacture craft novelly and novel shield |
| CN113470955A (en) * | 2021-06-25 | 2021-10-01 | 特变电(沈阳)电工新材料有限公司 | Production process and application of conductive belt with shielding function for power transformer |
-
2012
- 2012-06-25 CN CN 201220299085 patent/CN202678070U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110060848A (en) * | 2019-05-20 | 2019-07-26 | 保定天威保变电气股份有限公司 | A kind of converter power transformer improves the structure and its method of upper yoke lower part electric field |
| CN110211784A (en) * | 2019-05-28 | 2019-09-06 | 南通晓星变压器有限公司 | It is a kind of replace traditionally shielding shield manufacture craft novelly and novel shield |
| CN113470955A (en) * | 2021-06-25 | 2021-10-01 | 特变电(沈阳)电工新材料有限公司 | Production process and application of conductive belt with shielding function for power transformer |
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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: 20130116 |
|
| CX01 | Expiry of patent term |