CN2333074Y - Transformer high-tension coil - Google Patents
Transformer high-tension coil Download PDFInfo
- Publication number
- CN2333074Y CN2333074Y CN 97220245 CN97220245U CN2333074Y CN 2333074 Y CN2333074 Y CN 2333074Y CN 97220245 CN97220245 CN 97220245 CN 97220245 U CN97220245 U CN 97220245U CN 2333074 Y CN2333074 Y CN 2333074Y
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- China
- Prior art keywords
- layer
- wire winding
- voltage
- utility
- voltage wire
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a high-voltage coil of a transformer. The utility model comprises a high-voltage wire winding, an inner and an outer insulation coating layers, and insulation layer mediums which are cast in the inner and the outer insulation coating layers, wherein, an insulation layer which is coated on the outside of the high-voltage wire winding is a fiberglass woven roving. Because the thin fiberglass woven roving is wound and coated on the outside of the high-voltage wire winding, the outer insulation coating layer is leveled, and the thickness of the outer coating layer is reduced to below five millimeters; therefore, the high-voltage wire winding has good permeability, and the vacuum degassing performance is enhanced. After epoxy resins are cast, a smooth outer layer is naturally formed, and process steps of dressing and lacquering can be remitted; therefore, the utility model has the advantages of time saving, material saving and smooth and beautiful appearance, the favorable mechanical and electric intensity of the high-voltage coil can be ensured, and operating staff's working conditions are improved.
Description
The utility model relates to a kind of transformer, specifically belongs to transformer high-voltage coil.
The high-tension coil of transformer is the high-voltage line winding to be coated the casting insulated medium-tight in back with interior external insulation layer form, and its coated insulation material of different products is different.At present, few filler thin insulating epoxy cast dry transformer, its high pressure winding external insulation layer is to cut the glass fiber felt with the alkali-free weak point to make coating layer, like this behind the casting epoxy resin, high-voltage line winding and inside and outside insulating coating are cured as integrally formed high-tension coil integral body, and this high-tension coil has electric preferably and mechanical performance.But, because the alkali-free weak point cuts glass fiber felt fiber fluffy, have certain thickness, poor permeability, thus influence the vacuum degassing performance of transformer high-voltage coil.Simultaneously, the end of this insulating material taper easily penetrates the coil insulation top layer, not only influences outward appearance, also influences the insulation property of high-tension coil.Therefore behind the coil cast cured explosive, not only will polish, also want japanning to modify, it is smooth to reach the top layer, the expense of taking a lot of work material.And operating personnel also can be stabbed hand by the short hard sharp end of glass fiber felt unavoidably in the course of processing.
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of good electric and mechanical strength that both guaranteed is provided, and can exempt polishing japanning operation again, labor and material saving, the smooth smooth transformer high-voltage coil of appearance.
The purpose of this utility model is achieved in that
A kind of transformer high-voltage coil comprises the high-voltage line winding, inside and outside insulating coating and be cast in wherein insulating dielectric layer, and wherein, described high-voltage line winding external insulation coating layer is the glass fiber woven roving.
Described external insulation coating thickness is no more than 5mm.
The utility model makes the external insulation coating layer smooth, and external coating thickness is reduced to below 5 millimeters owing to twine the very thin glass fiber woven roving of coating one deck outside the high-voltage line winding, so good penetrability, has improved the vacuum degassing performance.Naturally form smooth skin behind the casting epoxy resin, exempted polishing and japanning operation, the material-saving that therefore saves time, smooth in appearance is attractive in appearance.The appearance that high-tension coil is smooth helps keeping the bright and clean of high-tension coil, avoids moist dust to accumulate, thereby guarantees high-tension coil good insulation performance performance.Simultaneously, improve operating personnel's condition of work, reduced labour intensity.
Fig. 1 is a structural representation of the present utility model.
Below in conjunction with the drawings and the specific embodiments the utility model is further described:
Accompanying drawing is a kind of cross-sectional view of epoxy cast dry transformer high-tension coil.As shown in the figure, the inner insulating layer of long tubular high-voltage line winding 2 is an insulating material glass fiber woven roving 3, and high-voltage line winding 2 is in the centre.Outside the high-voltage line winding, evenly coat glass fiber woven roving 1, form the latticed insulating coating of one deck, pour into a mould with epoxide resin vacuum then, make epoxy resin infiltrate through the glass fiber woven roving, fill between each layer, be solidified as a whole with the high pressure winding, it is attractive in appearance to become a smooth in appearance, the transformer high-voltage coil 4 of good insulating.This transformer high-voltage coil external insulation coating thickness is 4mm, compares with not improved high-tension coil, though that the thickness of external insulation coating layer has reduced is over half, not only does not influence its mechanical performance, insulation property are better.Simultaneously, simplify manufacturing procedure.
Claims (2)
1. a transformer high-voltage coil comprises the high-voltage line winding, inside and outside insulating coating, and be cast in wherein insulating dielectric layer, it is characterized in that: described high-voltage line winding external insulation coating layer is the glass fiber woven roving.
2. transformer high-voltage coil according to claim 1 is characterized in that: described external insulation coating thickness is no more than 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97220245 CN2333074Y (en) | 1997-09-30 | 1997-09-30 | Transformer high-tension coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97220245 CN2333074Y (en) | 1997-09-30 | 1997-09-30 | Transformer high-tension coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2333074Y true CN2333074Y (en) | 1999-08-11 |
Family
ID=33935977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97220245 Expired - Lifetime CN2333074Y (en) | 1997-09-30 | 1997-09-30 | Transformer high-tension coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2333074Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063994A (en) * | 2010-11-16 | 2011-05-18 | 上海威尔泰工业自动化股份有限公司 | Excitation coil protection method of electromagnetic flow meter |
| CN101728067B (en) * | 2010-01-15 | 2011-09-14 | 中国西电电气股份有限公司 | Casting type power extraction coil structure and preparation method thereof |
-
1997
- 1997-09-30 CN CN 97220245 patent/CN2333074Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728067B (en) * | 2010-01-15 | 2011-09-14 | 中国西电电气股份有限公司 | Casting type power extraction coil structure and preparation method thereof |
| CN102063994A (en) * | 2010-11-16 | 2011-05-18 | 上海威尔泰工业自动化股份有限公司 | Excitation coil protection method of electromagnetic flow meter |
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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 | ||
| CX01 | Expiry of patent term |