CN218482087U - High-voltage angle joint connecting structure of dry-type transformer - Google Patents
High-voltage angle joint connecting structure of dry-type transformer Download PDFInfo
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- CN218482087U CN218482087U CN202222802163.4U CN202222802163U CN218482087U CN 218482087 U CN218482087 U CN 218482087U CN 202222802163 U CN202222802163 U CN 202222802163U CN 218482087 U CN218482087 U CN 218482087U
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Abstract
The utility model relates to a dry-type transformer high pressure angle joint connection structure, including transformer high voltage winding and angle joint line, the A of transformer angle joint, C phase connection line A-Z, one end is fixed at A phase winding upper portion outlet terminal A, draws forth upwards, passes through from the upper portion of transformer A, B, C winding, through the positioner who is fixed at last indisputable yoke folder, fixes on C phase winding lower part outlet terminal C. Compared with the two existing connection modes, namely the connection mode that the angle connection wires A-C of the A phase and the C phase are bridged from the middle part of the winding or connected from the lower part of the high-voltage winding, the structure is simple, the electrified size of the transformer in the width direction is reduced, and the problems that the insulation distance of the A-C phase connection wires to a fan is increased under the condition that the fan is arranged on the lower part of the transformer winding, so that the height of the transformer is increased and the air quantity of the fan is increased are solved.
Description
Technical Field
The utility model belongs to the dry-type transformer field especially relates to a dry-type transformer high pressure angle joint connection structure.
Background
The high-voltage D connection of the current 10kV and 35 kV-level transformer is basically in two forms, specifically shown in figures 1 and 2.
Fig. 1 and 2 show a conventional dry-type transformer lead connection method, which requires a distance between leads to be bridged to be 130mm or more in a 10kV voltage system and 350mm or more in a 35kV voltage system according to a requirement of a safe power utilization distance in a transformer standard, thereby increasing a charged size of the transformer in a width B direction.
In fig. 3 and 4, the a-Z connecting line is disposed at the lower part of the high-voltage winding, and although the D-connection mode of the high-voltage lead reduces the electrified size in the width direction of the transformer, the insulation distance of the lead to the fan also needs to meet the requirements in the transformer standard, the electrified size in the height H direction of the transformer needs to be increased by ensuring that the insulation distance is over 130mm in a 10kV voltage system and 350mm in a 35kV voltage system, which leads to an increase in the production and manufacturing cost.
Disclosure of Invention
In order to solve the difficult problem that prior art exists, the utility model relates to a dry-type transformer high pressure angle joint connection structure, the A of transformer angle joint, C phase connection line A-Z, one end are fixed at A phase winding upper portion leading-out terminal A, upwards draw forth, pass through from the upper portion of transformer A, B, C winding, through the positioner who fixes at last indisputable yoke folder, fix on C phase winding lower part leading-out terminal C. The high-voltage D connection lead structure is characterized in that A-Z connecting wires are arranged on the upper portion of a high-voltage winding of the transformer, and the purpose of reducing the overall dimension of the transformer is achieved under the condition that the height and width dimensions of the transformer are not increased.
The high-voltage angle joint connecting structure of the dry type transformer is characterized in that a positioning device is arranged at one end of an upper iron yoke clamping piece, a post insulator is fixed on the clamping piece through bolts, a fixed insulating plate is fixed on the post insulator, and an insulating tape is arranged on the outer side of the fixed insulating plate and used for fixing an A-Z connecting wire.
The beneficial effects of the utility model reside in that: the positioning device is fixed at the upper iron yoke clamping piece, so that the operation is simple; the A-Z connecting wire structure is arranged at the upper part of the high-voltage winding, so that the safe electrical distance between components can be ensured without changing the height or width dimension of the transformer.
Drawings
FIG. 1 is a front view of a conventional high voltage D lead;
FIG. 2 is a side view of a conventional high voltage D-connection lead structure;
3A-C are front views of D-connection lead structures of jumpers at the lower portion of the high voltage winding;
4A-C are side views of the D-lead configuration of the jumper at the lower portion of the high voltage winding;
FIGS. 5A-C are front views of a D-lead configuration of a jumper at the upper portion of a high voltage winding;
fig. 6A-C are side views of a D-connection lead structure with a jumper at the upper portion of a high voltage winding;
in the figure: 1. a transformer body; 2. An A-Z connection line; 3. a post insulator; 4. fixing an insulating plate; 5. an insulating tape.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
A high-voltage angle joint connection structure of a dry type transformer is characterized in that a phase A and a phase C connection line A-Z of an angle joint of the transformer are connected, one end of the phase A connection line A-Z is fixed on an outgoing line terminal A on the upper portion of a phase A winding and is led out upwards, the phase A, the phase B and the phase C winding pass through the upper portions of the transformer A, the transformer B and the phase C winding and are fixed on an outgoing line terminal C on the lower portion of a phase C winding through a positioning device fixed on an upper iron yoke clamping piece, and a high-voltage D connection line structure is formed by arranging A-Z connection lines on the upper portion of a high-voltage winding of the transformer.
The high-voltage angle joint structure of the dry type transformer is characterized in that a positioning device is arranged at one end of an upper iron yoke clamping piece, a supporting insulator is fixed on the clamping piece through a bolt, a fixed insulating plate is fixed on the supporting insulator, and an insulating tape is arranged on the outer side of the fixed insulating plate and used for fixing an A-Z connecting wire. The A-Z connecting wire structure is arranged on the upper part of the high-voltage winding, so that the safe electrical distance between components can be ensured without changing the height or width dimension of the transformer.
In fig. 5 and 6, on the transformer body 1, two ends of the a-Z connecting wire 2 are respectively fixed on the a and Z outgoing line terminals of the winding, a post insulator 3 is arranged at one end of the upper iron yoke clamp, and a fixed insulating plate 4 and an insulating tape 5 are arranged on the outer side of the upper iron yoke clamp, so that the a-Z connecting wire is fixed, and the a-Z connecting wire forms a stable structure.
The utility model discloses connection structure all is suitable for above-mentioned two kinds of connected mode.
Claims (2)
1. A high-voltage angle joint connecting structure of a dry-type transformer comprises a high-voltage winding of the transformer and an angle joint connecting line thereof, and is characterized in that: one end of a phase A and a phase C connecting wire A-Z of the transformer angle joint is fixed on an outgoing line terminal A on the upper part of the phase A winding and is led out upwards, passes through the upper parts of the phase A, the phase B and the phase C winding through a positioning device fixed on an upper iron yoke clamping piece and is fixed on an outgoing line terminal C on the lower part of the phase C winding.
2. The high-voltage corner connection structure of a dry-type transformer according to claim 1, wherein: the positioning device is arranged at one end of the upper iron yoke clamping piece, the post insulator is fixed on the clamping piece through a bolt, the fixed insulating plate is fixed on the post insulator, and the insulating tape is arranged on the outer side of the fixed insulating plate and used for fixing the A-Z connecting wire.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221856712X | 2022-07-19 | ||
| CN202221856712 | 2022-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218482087U true CN218482087U (en) | 2023-02-14 |
Family
ID=85170591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222802163.4U Active CN218482087U (en) | 2022-07-19 | 2022-10-24 | High-voltage angle joint connecting structure of dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218482087U (en) |
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2022
- 2022-10-24 CN CN202222802163.4U patent/CN218482087U/en active Active
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