CN201562559U - Oblique electrostatic ring structure of large transformers - Google Patents
Oblique electrostatic ring structure of large transformers Download PDFInfo
- Publication number
- CN201562559U CN201562559U CN2009203135058U CN200920313505U CN201562559U CN 201562559 U CN201562559 U CN 201562559U CN 2009203135058 U CN2009203135058 U CN 2009203135058U CN 200920313505 U CN200920313505 U CN 200920313505U CN 201562559 U CN201562559 U CN 201562559U
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- electrostatic ring
- oblique
- voltage regulator
- equipotential line
- regulator coil
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Abstract
The utility model relates to an oblique electrostatic ring structure of large transformers, which belongs to the technical field of transformer manufacturing. The technical scheme includes that the structure comprises an oblique electrostatic ring framework (1), an equipotential line (2), an aluminum foil (3), an insulating layer (4) and a voltage regulator coil. The oblique electrostatic ring framework made of laminated paper rings is arranged in a profiling manner matched with spiral obliquity of the voltage regulator coil, the equipotential line, the aluminum foil and the insulating layer are wrapped on outside of the oblique electrostatic ring framework, and an electrostatic ring outlet led out from the equipotential line is connected with a first wire cake at the end portion of the voltage regulator coil. The structure adopts an oblique end ring type electrostatic ring with proper shaping design matched with the wire cake at the end portion of the voltage regulator coil (spiral type), with the modification, eliminates a relatively large triangular zone formed at the end portion of a conventional voltage regulator coil in flattening process, improves equipotential line distribution at the end portion of the voltage regulator coil so as to improve electric field distribution, and resolves problems of field intensity concentration on wire cakes of the upper and the lower sides of the triangular zone, easy discharge and transformer damage.
Description
Affiliated technical field:
The utility model relates to a kind of oblique electrostatic ring structure of high-power transformer, belongs to technical field of transformer manufacturing.
Background technology:
In power transformer, because near the Electric Field Distribution winding overhang or the inlet line segment is extremely inhomogeneous, cause the dielectric strength of winding overhang to reduce, electric discharge phenomena easily take place, damage transformer.The end is in the transformer of 220kV and above voltage, in order to improve winding overhang or near the Electric Field Distribution of the inlet line segment, all be provided with electrostatic ring in transformer input, output lead and winding junction, its effect is that the winding overhang non-uniform electric field is become even a little, to improve the dielectric strength of end.The many helical structures of the general employing of 220kV level voltage regulation coil, even up the end, in the process of evening up, form a bigger trigonum at end winding, this regional Electric Field Distribution is extremely inhomogeneous, equipotential line is crooked significantly in coil, occur field intensity on the line cake of trigonum upper and lower sides and concentrate, electric discharge phenomena easily take place, damage transformer.
The utility model content:
The utility model purpose provides a kind of oblique electrostatic ring structure of high-power transformer, improves the end Electric Field Distribution of voltage regulation coil, solves the problems referred to above that exist in the background technology.
The technical solution of the utility model is:
The oblique electrostatic ring structure of high-power transformer comprises oblique electrostatic ring skeleton, equipotential line, aluminium foil, insulating barrier, voltage regulation coil, the oblique electrostatic ring skeleton that the laminated paper circle is made is provided with by the spiral slope profiling coupling of voltage regulation coil, tiltedly equipotential line, aluminium foil and insulating barrier are wrapped up in electrostatic ring skeleton outside, equipotential line is drawn to lift one's head as electrostatic ring and is connected with the voltage regulation coil end first circle line cake, makes the electrostatic ring current potential identical with this line cake.
Equipotential line is a copper litz wire, aluminium foil is the one side conduction, another side insulation designs the skeleton of oblique electrostatic ring by the spiral slope of voltage regulation coil (spiral), and copper litz wire and outside aluminium foil line cake make the profiling coupling that skeleton is set and form and the equipotential electrified body of the voltage regulation coil end first circle line cake.
The beneficial effects of the utility model: the utility model adopts the splay end circle formula electrostatic ring of suitable type design to cooperate with voltage regulation coil (spiral) end line cake, oblique electrostatic ring structure after improving has like this been eliminated traditional voltage regulation coil and formed a bigger trigonum at end winding in the process of evening up, having improved voltage regulation coil end equipotential line distributes, thereby improved Electric Field Distribution, having solved on the line cake of trigonum upper and lower sides field intensity concentrates, electric discharge phenomena easily take place, and damage the problem of transformer.
Description of drawings:
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is the utility model embodiment coil sides view:
Fig. 3 is the A-A generalized section of Fig. 1.
Among the figure: oblique electrostatic ring skeleton 1, equipotential line 2, aluminium foil 3, insulating barrier 4.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.
In an embodiment, the oblique electrostatic ring structure of high-power transformer comprises oblique electrostatic ring skeleton 1, equipotential line 2, aluminium foil 3, insulating barrier 4, voltage regulation coil, the oblique electrostatic ring skeleton that the laminated paper circle is made is provided with by the spiral slope profiling coupling of voltage regulation coil, tiltedly equipotential line, aluminium foil and insulating barrier are wrapped up in electrostatic ring skeleton outside, equipotential line is drawn to lift one's head as electrostatic ring and is connected with the voltage regulation coil end first circle line cake, makes the electrostatic ring current potential identical with this line cake.Equipotential line 2 is copper litz wires, and aluminium foil 3 is the one side conduction, the another side insulation.
Tiltedly electrostatic ring skeleton 1 has been determined the profile of electrostatic ring, makes electrostatic ring can bear pressure assembling force.Copper litz wire is placed along the excircle of skeleton, and extension is lifted one's head as electrostatic ring and linked to each other with the voltage regulation coil portion first circle line cake, makes the electrostatic ring current potential identical with this line cake, so be also referred to as equipotential line.Aluminium foil 3 conducting surfaces are close to copper litz wire evenly on skeleton, and skeleton is formed and the equipotential electrified body of the voltage regulation coil portion first circle line cake.This electrified body has improved voltage regulation coil end equipotential line and has distributed, thereby has improved Electric Field Distribution, has solved on the line cake of trigonum upper and lower sides field intensity and has concentrated, and electric discharge phenomena easily take place, and damages the problem of transformer.
Claims (2)
1. the oblique electrostatic ring structure of a high-power transformer, it is characterized in that comprising oblique electrostatic ring skeleton (1), equipotential line (2), aluminium foil (3), insulating barrier (4), voltage regulation coil, the oblique electrostatic ring skeleton that the laminated paper circle is made is provided with by the spiral slope profiling coupling of voltage regulation coil, oblique electrostatic ring skeleton outside wrapping equipotential line, aluminium foil and insulating barrier, equipotential line are drawn to lift one's head as electrostatic ring and are connected with the voltage regulation coil end first circle line cake.
2. according to the oblique electrostatic ring structure of the described a kind of high-power transformer of claim 1, it is characterized in that said equipotential line (2) is a copper litz wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203135058U CN201562559U (en) | 2009-10-29 | 2009-10-29 | Oblique electrostatic ring structure of large transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203135058U CN201562559U (en) | 2009-10-29 | 2009-10-29 | Oblique electrostatic ring structure of large transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562559U true CN201562559U (en) | 2010-08-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203135058U Expired - Fee Related CN201562559U (en) | 2009-10-29 | 2009-10-29 | Oblique electrostatic ring structure of large transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562559U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187155A (en) * | 2011-12-30 | 2013-07-03 | 洛阳恒光特种变压器有限公司 | Layered voltage regulation coil |
| CN106205982A (en) * | 2016-08-22 | 2016-12-07 | 吴江变压器有限公司 | A kind of outlet structure of Transformer Winding end electrostatic ring |
| CN108242324A (en) * | 2017-11-28 | 2018-07-03 | 山东泰开变压器有限公司 | For the electrostatic panel assembly of helical winding end |
-
2009
- 2009-10-29 CN CN2009203135058U patent/CN201562559U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187155A (en) * | 2011-12-30 | 2013-07-03 | 洛阳恒光特种变压器有限公司 | Layered voltage regulation coil |
| CN106205982A (en) * | 2016-08-22 | 2016-12-07 | 吴江变压器有限公司 | A kind of outlet structure of Transformer Winding end electrostatic ring |
| CN106205982B (en) * | 2016-08-22 | 2018-03-30 | 吴江变压器有限公司 | A kind of outlet structure of Transformer Winding end electrostatic ring |
| CN108242324A (en) * | 2017-11-28 | 2018-07-03 | 山东泰开变压器有限公司 | For the electrostatic panel assembly of helical winding end |
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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: 20100825 Termination date: 20131029 |