CN201975236U - Insulating structure of 35kV distribution transformer body - Google Patents
Insulating structure of 35kV distribution transformer body Download PDFInfo
- Publication number
- CN201975236U CN201975236U CN2011200419197U CN201120041919U CN201975236U CN 201975236 U CN201975236 U CN 201975236U CN 2011200419197 U CN2011200419197 U CN 2011200419197U CN 201120041919 U CN201120041919 U CN 201120041919U CN 201975236 U CN201975236 U CN 201975236U
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- insulating structure
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Abstract
The utility model discloses an insulating structure of a 35kV distribution transformer body, which comprises low-voltage coils and two high-voltage coils sleeved outside the low-voltage coils; and stays are uniformly arranged between the low-voltage coils and the high-voltage coils. The insulating structure is characterized in that the two high-voltage coils are vertically arranged and are connected in series; an insulating end ring is arranged between the two high-voltage coils; and an electrostatic screen is arranged between the inside of the upper high-voltage coil and the stays. The insulating structure has the advantages that: firstly, the distribution of an electric field is uniform, the phenomenon that the electric field is centralized is eliminated and the electrical performance is more reliable; secondly, the insulating structure has favorable process performance and is convenient to produce and manufacture; and thirdly, the insulating structure has favorable mechanical strength and heat-radiating performance and low noise.
Description
Technical field
The utility model relates to the power transformer that is applied to 35kV power transmission and transformation distribution system, particularly a kind of 35kV distribution transformer device body insulation structure.
Background technology
Distribution transformer in the 35kV electric power system is at present used more and more widely.Be used for the distribution transformer of this system because high pressure is commonly the 35kV level, the more common distribution transformer of device body insulation of this transformer is different.Common distribution transformer structure is that the outside is single high-tension coil, and does not have electrostatic shielding between the high and low pressure coil.This structure is under the effect of electromagnetic field, and electromagnetic field distributes and is difficult for evenly, especially is easy to generate electric field at the high-tension coil middle part and concentrates, and directly influences the running quality and the life-span of transformer.
Summary of the invention
Technical problem to be solved in the utility model is will provide a kind of can strengthen electric insulation intensity, improves Electric Field Distribution, can eliminate the electric field concentration phenomenon, the reliable 35kV distribution transformer of electric property device body insulation structure.
The utility model is achieved in that it comprises low-voltage coil and the high-tension coil that is enclosed within the low-voltage coil outside, between low-voltage coil and high-tension coil, be evenly equipped with stay, its special character is: described high-tension coil is two and arranges up and down, two high-tension coils are connected mutually, between two high-tension coils, be provided with insulating end ring, between the high-tension coil inside on top and stay, be provided with electrostatic shielding.
The utility model has the advantages that:
1, Electric Field Distribution is even, eliminates the electric field concentration phenomenon, and electric property is more reliable.
Because high-tension coil is two and arranged in series up and down, is provided with insulating end ring between two high-tension coils, so just eliminated the concentrated phenomenon of high-tension coil middle part electric field; In addition, set up electrostatic shielding in high-tension coil inside, top, can improve the distribution of high pressure internal electric field, make internal electric field more even, the electric property of product is more reliable, and is safer.
2, good manufacturability, it is convenient to manufacture.
Two high-tension coil coilings respectively, moulds of industrial equipment are simple, good manufacturability; The each several part insulating part is bonded through hot pressing processing, needn't pass through machine finishing.
3, mechanical strength is good, and thermal diffusivity is good, and noise is low.
Owing to increased insulating end ring between two high-tension coils, being equivalent to the middle part has increased axial support, makes the high-tension coil mechanical strength obtain reinforcement, has also increased the heat radiation oil duct of high-tension coil, and the high pressure internal heat sheds when helping the transformer operation; Simultaneously insulating end ring has further increased the high-tension coil mechanical stability, thus the noise that has produced owing to electric and magnetic oscillation when having reduced the transformer operation.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: low-voltage coil 1, electrostatic shielding 2, high-tension coil 3, insulating end ring 4, stay 5.
Embodiment
As shown in the figure, this 35kV distribution transformer device body insulation structure comprises low-voltage coil 1 and is enclosed within the high-tension coil 3 of low-voltage coil 1 outside, the uniform stay 5 that is bonded with between low-voltage coil 1 and high-tension coil 3, described high-tension coil 3 is two and arranges up and down, two high-tension coils 3 are connected mutually, between two high-tension coils 3, be provided with insulating end ring 4, be provided with electrostatic shielding 2 between the inner and stay 5 at the high-tension coil 3 on top.
Claims (1)
1. 35kV distribution transformer device body insulation structure, comprise low-voltage coil and the high-tension coil that is enclosed within the low-voltage coil outside, between low-voltage coil and high-tension coil, be evenly equipped with stay, it is characterized in that: described high-tension coil is two and arranges up and down, two high-tension coils are connected mutually, between two high-tension coils, be provided with insulating end ring, between the high-tension coil inside on top and stay, be provided with electrostatic shielding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200419197U CN201975236U (en) | 2011-02-21 | 2011-02-21 | Insulating structure of 35kV distribution transformer body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200419197U CN201975236U (en) | 2011-02-21 | 2011-02-21 | Insulating structure of 35kV distribution transformer body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975236U true CN201975236U (en) | 2011-09-14 |
Family
ID=44580334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200419197U Expired - Fee Related CN201975236U (en) | 2011-02-21 | 2011-02-21 | Insulating structure of 35kV distribution transformer body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201975236U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474216A (en) * | 2013-09-25 | 2013-12-25 | 三变科技股份有限公司 | Insulation structure of transformer coil and manufacturing method of insulation structure |
| CN103617878A (en) * | 2013-12-16 | 2014-03-05 | 三变科技股份有限公司 | Transformer with soft angle ring structure and manufacturing method of transformer with soft angle ring structure |
| CN111354548A (en) * | 2020-04-09 | 2020-06-30 | 常州工学院 | Oil-immersed transformer |
-
2011
- 2011-02-21 CN CN2011200419197U patent/CN201975236U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474216A (en) * | 2013-09-25 | 2013-12-25 | 三变科技股份有限公司 | Insulation structure of transformer coil and manufacturing method of insulation structure |
| CN103617878A (en) * | 2013-12-16 | 2014-03-05 | 三变科技股份有限公司 | Transformer with soft angle ring structure and manufacturing method of transformer with soft angle ring structure |
| CN103617878B (en) * | 2013-12-16 | 2016-09-07 | 三变科技股份有限公司 | A kind of transformer with soft corner-ring structure and preparation method thereof |
| CN111354548A (en) * | 2020-04-09 | 2020-06-30 | 常州工学院 | Oil-immersed transformer |
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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: 20110914 Termination date: 20140221 |