CN203150359U - High-voltage coil of dry-type transformer for conversion of 6.6 kV and 19.8 kV - Google Patents
High-voltage coil of dry-type transformer for conversion of 6.6 kV and 19.8 kV Download PDFInfo
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- CN203150359U CN203150359U CN 201220618090 CN201220618090U CN203150359U CN 203150359 U CN203150359 U CN 203150359U CN 201220618090 CN201220618090 CN 201220618090 CN 201220618090 U CN201220618090 U CN 201220618090U CN 203150359 U CN203150359 U CN 203150359U
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- type transformer
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Abstract
The utility model relates to a high-voltage coil of a dry-type transformer for conversion of 6.6 kV and 19.8 kV. The high-voltage coil comprises an internal coating insulator and an external coating insulator located outside the internal coating insulator, wherein coils wound by a conducting wire and provided with set number of turns is located between the internal coating insulator and the external coating insulator; layer insulators are arranged between every two adjacent turns of coils; an epoxy resin mixture is cast between the internal coating insulator and the external coating insulator; and end insulators are arranged at the left end and the right end of each coil. The high-voltage coil of the dry-type transformer is characterized in that 12 sections of coils with the same number of turns are provided totally, and each 4 sections of coils are connected in series to form a winding. The high-voltage coil provided by the utility model overcomes the defects in the prior art, and provides the high-voltage coil of the dry-type transformer for conversion of 6.6 kV and 19.8 kV; through series-parallel connection of a first winding, a second winding and a third winding, 6.6 kV and 19.8 kV can be satisfied simultaneously; therefore, repeated investment when the input voltage changes is avoided, and the occupied area is small.
Description
Technical field
The utility model relates to a kind of 19.8kV with the dry-type transformer high-tension coil of 6.6kV conversion, can be used in the electric power system, belongs to the transformer technology field.
Background technology
The dry-type transformer that uses in the electric power system at present mostly is the univoltage dry-type transformer, high-tension coil is the important component part of dry-type transformer, as shown in Figure 1, wrap insulation 2 in existing high-tension coil comprises and be positioned at bag insulation 2 outer outsourcings and insulate 4, the coil of the setting number of turn that is turned to by lead 1 insulate between 4 in interior bag insulation 2 and outsourcing, be provided with layer insulation 3 between the adjacent two circle coils, between interior bag insulation 2 and outsourcing insulation 4, be cast with mixture of epoxy resins 5, the dry-type transformer high-tension coil that the two ends, the left and right sides of coil are provided with end insulation 6,6.6kV is divided into 4 sections; The dry-type transformer high-tension coil of 19.8kV shown in Figure 2 is divided into 8 sections.
Above-mentioned high-tension coil has the following disadvantages: under the certain situation of output voltage, a univoltage dry-type transformer has only a kind of rated voltage, namely can only be used in a kind of distribution system of voltage, this high-tension coil just can't use when the input voltage of this distribution system raises or reduce.
Summary of the invention
The purpose of this utility model provides a kind of dry-type transformer high-tension coil that can satisfy different voltage distribution systems requirements.
In order to achieve the above object, the technical solution of the utility model has provided a kind of 6.6kV with the dry-type transformer high-tension coil of 19.8kV conversion, bag insulate and is positioned at and wraps the outer outsourcing insulation of insulation in comprising, the coil of the setting number of turn that is turned to by lead is between interior bag insulation is insulated with outsourcing, be provided with layer insulation between the adjacent two circle coils, between interior bag insulation and outsourcing insulation, be cast with mixture of epoxy resins, be provided with the end insulation at the two ends, the left and right sides of coil, it is characterized in that: the coil that has 12 sections identical numbers of turn, per 4 sections coils series connection forms a winding, thereby forms winding one, winding two and winding three; Below coil, from left to right be provided with input terminal one and the outlet terminal one of winding one successively, the input terminal two of winding two and outlet terminal two, the input terminal three of winding three and outlet terminal three.
Preferably, arbitrarily input terminal is L with the outlet terminal in the vertical direction neighbor distance adjacent with it, L 〉=50mm.
The device that the utility model provides has overcome the deficiencies in the prior art, a kind of 19.8kV is provided the dry-type transformer high-tension coil with the 6.6kV conversion, by winding one, winding two, the connection in series-parallel of winding three can be satisfied 19.8kV and 6.6kV simultaneously, overlapping investment when avoiding input voltage to change, floor space is little.
Description of drawings
Fig. 1 is the high-tension coil structural representation of traditional 6.6kV dry-type transformer;
Fig. 2 is the high-tension coil structural representation of traditional 19.8kV dry-type transformer;
The dry-type transformer high-tension coil structural representation that a kind of 19.8kV that Fig. 3 provides for the utility model changes with 6.6kV.
Embodiment
For the utility model is become apparent, now with preferred embodiment, and conjunction with figs. is described in detail below.
As shown in Figure 3, the device that the utility model provides mainly comprises input terminal 1, the outlet terminal 1 of lead 1, interior bag insulation 2, layer insulation 3, outsourcing insulation 4, mixture of epoxy resins 5, end insulation 6 and winding one A, the input terminal 29 of winding two B, outlet terminal 2 10, the input terminal 3 11 of winding three C, outlet terminal 3 12.
In bag insulation 2 and outsourcing insulation 4 be glass fiber grid cloth, thickness is generally 0.5mm, 1.0mm or 2.0mm, sizing grid is generally 10mm * 10mm, can play the effect that improves coil intensity behind the cast cured explosive, the similar screw-thread steel of putting when mixed pise.
Mixture of epoxy resins 5 for a kind of be the epoxy resin of the filler of silicon powder with main component, be mainly used to fill the coil internal voids, fixing cord 1 plays the effect that improves dielectric strength.
Coil from left to right is divided into 12 sections structures that the number of turn is identical, and the left side is composed in series winding one A for 4 sections, and middle 4 sections are composed in series winding two B, and the right is composed in series winding three C for 4 sections.The coil below from left to right is provided with input terminal 1, the outlet terminal 1 of winding one A successively, the input terminal 29 of winding two B, outlet terminal 2 10, the input terminal 3 11 of winding three C, outlet terminal 3 12, arbitrarily input terminal is L with the outlet terminal in the vertical direction neighbor distance adjacent with it, L 〉=50mm.
The utility model winding one A, winding two B, winding three C are when serial or parallel connection moves, and reactance is highly identical, and the short-circuit impedance of loading when identical is also identical, can pass through winding one A, winding two B, the connection in series-parallel of winding three C is to satisfy two kinds of voltages of 19.8kV and 6.6kV.
Claims (2)
1. a 6.6kV is with the dry-type transformer high-tension coil of 19.8kV conversion, bag insulate (2) and is positioned at and wraps the outer outsourcing insulation (4) of insulation (2) in comprising, the coil of the setting number of turn that is turned to by lead (1) is positioned at bag insulation (2) and insulate between (4) with outsourcing, be provided with layer insulation (3) between the adjacent two circle coils, between interior bag insulation (2) and outsourcing insulation (4), be cast with mixture of epoxy resins, be provided with end insulation (6) at the two ends, the left and right sides of coil, it is characterized in that: the coil that has 12 sections identical numbers of turn, per 4 sections coils series connection forms a winding, thereby forms winding one (A), winding two (B) and winding three (C); Below coil, from left to right be provided with input terminal one (7) and the outlet terminal one (8) of winding one (A) successively, the input terminal two (9) of winding two (B) and outlet terminal two (10), the input terminal three (11) of winding three (C) and outlet terminal three (12).
2. a kind of 6.6kV as claimed in claim 1 is characterized in that with the dry-type transformer high-tension coil of 19.8kV conversion: input terminal is L with the outlet terminal in the vertical direction neighbor distance adjacent with it arbitrarily, L 〉=50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220618090 CN203150359U (en) | 2012-11-21 | 2012-11-21 | High-voltage coil of dry-type transformer for conversion of 6.6 kV and 19.8 kV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220618090 CN203150359U (en) | 2012-11-21 | 2012-11-21 | High-voltage coil of dry-type transformer for conversion of 6.6 kV and 19.8 kV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150359U true CN203150359U (en) | 2013-08-21 |
Family
ID=48977868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220618090 Expired - Lifetime CN203150359U (en) | 2012-11-21 | 2012-11-21 | High-voltage coil of dry-type transformer for conversion of 6.6 kV and 19.8 kV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203150359U (en) |
-
2012
- 2012-11-21 CN CN 201220618090 patent/CN203150359U/en not_active Expired - Lifetime
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |