CN102364629B - Double-U-shaped coil - Google Patents
Double-U-shaped coil Download PDFInfo
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- CN102364629B CN102364629B CN 201110293258 CN201110293258A CN102364629B CN 102364629 B CN102364629 B CN 102364629B CN 201110293258 CN201110293258 CN 201110293258 CN 201110293258 A CN201110293258 A CN 201110293258A CN 102364629 B CN102364629 B CN 102364629B
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Abstract
The invention relates to a transformer coil, in particular to a double-U-shaped coil. The double-U-shaped coil comprises an upper part coil and a lower part coil, wherein an axial insulating mechanism is arranged between the two coils; both the upper part coil and the lower part coil have a U-shaped structure consisting of an inner layer coil and an outer layer coil; and the upper part coil and the lower part coil are connected with each other through an outer lead. In the double-U-shaped coil, the coils are arranged in a segmented mode, so the reactance height is effectively lowered, the main insulation distance is widened, flexible changes in a connecting mode and a winding mode can be realized, impedance can be adjusted conveniently, and the manufacturing cost is reduced.
Description
Technical field
The present invention relates to a kind of transformer coil, relate in particular to a kind of double-U-shaped coil.
Background technology
The large-scale power transformer low-voltage coil how spirally is generally or double-layered cylinder formula coil (single U-shaped).To coiling, coil turn is many around Cylindorical rod for many helical windings, and axial length is big, causes that reactance is highly high, the fuel tank height increases.Be subjected to the restriction of fuel tank shipping height, the present general double-layered cylinder formula coil that adopts, double-layered cylinder formula be earlier with lead along the internal layer coiling, after lead is bent, the outer reverse coiling in edge again after the transposition of liter layer, same coil grading setting effectively reduces the reactance of coil highly, satisfies the requirement to the fuel tank shipping height, but this coil is for satisfying insulating requirements, the width of cloth to width need establish bigger, cause main insulating structure very nervous, and cost is higher.
Summary of the invention
For addressing the above problem, the invention provides a kind of reactance height of can reducing, can widen the double-U-shaped coil of main insulating structure again.
Double-U-shaped coil of the present invention, comprise upper coil and lower coil, be provided with axial dielectric mechanism between two coils, upper coil and lower coil all are the U-shaped structures that are made of inner coil and outer coil, and top, bottom two coils connect by outside lead-in wire.The present invention is the coil grading setting, reduced the reactance height of coil, and every coil sections all adopts the double-layered cylinder formula, is provided with insulating mechanism up and down between two parts, both reduced the width of cloth between coil to width, also widened main insulating structure.Upper coil and lower coil are connected by lead-in wire, can be the inner coils that the outer coil on top connects the bottom, also can be the outer coils that the outer coil on top connects the bottom, but flexible connection in series-parallel connected mode, and realization is to the adjusting of impedance.
For satisfying the insulating requirements between the coil of top and the bottom, axial dielectric of the present invention mechanism comprises cross-over block, paper circle and the cross-over block that is arranged in order vertically.Three-layer insulated structure can effectively widen the insulation distance between two U-shaped coils, and in conjunction with the cushion block oil clearance of end winding, guarantees that oil is smooth logical, the positioning action in the time of can also playing the U-shaped coil of second of mechanical support and coiling simultaneously.
The present invention is respectively equipped with an electrostatic ring in upper coil bottom and lower coil top, plays the end profile shielding effect, and increases shunt capacitance over the ground.
Insulation Problems for the potential difference that solves between inner coil and the outer coil causes is provided with radial insulation mechanism between described inner coil and the outer coil, this radial insulation mechanism comprises stay, cardboard, the stay that radially distributes from inside to outside.Inner coil rises layer transposition with outer coil and is connected, and a liter layer transposition is provided with and rises layer correcting wedge.
In addition, inner coil and outer coil end are provided with overhang insulation mechanism, and described overhang insulation mechanism is insulating end ring, guarantee the overhang insulation effect.
The present invention effectively reduces the reactance height with the coil grading setting, has widened main insulating structure, and can realize the flexible transformation of connected mode and winding mode, is convenient to regulate impedance, has reduced manufacturing cost.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the present invention are described in detail:
Fig. 1 is schematic top plan view of the present invention;
Fig. 2 is that A-A of the present invention is to cross-sectional schematic;
Among the figure, 1, outer coil, 2, stay, 3, stay, 4, cardboard, 5, inner coil, 6, stay, 7, paper web, 8, upper coil, 9, rise a layer correcting wedge, 10, lower coil, 11, outer coil, 12, inner coil, 13, insulating end ring, 14, end cushion block oil clearance, 15, electrostatic ring, 16, cross-over block, 17, the paper circle, 18, cross-over block, 19, electrostatic ring, 20, lead-in wire.
Embodiment
A kind of double-U-shaped coil, as shown in the figure, comprise upper coil 8 and lower coil 10, upper coil 8 is the U-shaped structures that are made of inner coil 5 and outer coil 1, lower coil 10 is the U-shaped structures that are made of inner coil 12 and outer coil 11, interior layer line 5, the intact back of 12 coilings rises layer transposition, continue coiling outer coil 1,11, a liter layer transposition is provided with and rises layer correcting wedge 9, be provided with radial insulation mechanism between inner coil and the outer coil, this radial insulation mechanism adopts stay 2, cardboard 4 and stay 3 three-deckers, inner coil and outer coil end are equipped with insulating end ring 13.Be provided with axial dielectric mechanism between upper coil 8 and the lower coil 10, this mechanism comprises cross-over block 16, paper circle 17 and the cross-over block 18 that is arranged in order vertically, upper coil 8 bottoms are provided with electrostatic ring 15, lower coil 10 tops are provided with electrostatic ring 19, are provided with end cushion block oil 14 between electrostatic ring and coil.Top, bottom two coils connect by outside lead-in wire 20, according to the connection in series-parallel requirement, can be that outer coil 1 connects inner coil 12 during connection, also can be that outer coil 1 connects outer coil 11.Inner coil 5,12 inboards are provided with stay 6 and paper web 7.
During this coil of coiling, first coiling upper coil on the spiral mould, from the lower end around, around behind the other end, finishing inner coil, with the lead bending, rise layer coiling outer coil from top to bottom, after intact, the spiral mould is spun upside down, again at the other end around lower coil, winding method is with the top coil.
Claims (2)
1. double-U-shaped coil, it is characterized in that: comprise upper coil (8) and lower coil (10), be provided with axial dielectric mechanism between two coils, upper coil (8) and lower coil (10) all are the U-shaped structures that are made of inner coil and outer coil, and top, bottom two coils connect by outside lead-in wire (20); Described upper coil (8) bottom and lower coil (10) top are respectively equipped with an electrostatic ring; Be provided with radial insulation mechanism between described inner coil (5,12) and the outer coil (1,11); Described radial insulation mechanism comprises stay (3), cardboard (4), the stay (2) that radially distributes from inside to outside; Inner coil (5,12) rises layer transposition with outer coil (1,11) and is connected, and a liter layer transposition is provided with and rises layer correcting wedge (9).
2. double-U-shaped coil according to claim 1 is characterized in that: described axial dielectric mechanism comprises cross-over block (16), paper circle (17) and the cross-over block (18) that is arranged in order vertically.
3. double-U-shaped coil according to claim 1, it is characterized in that: inner coil (5,12) and outer coil (1,11) end are provided with overhang insulation mechanism.
4. double-U-shaped coil according to claim 3 is characterized in that: described overhang insulation mechanism is insulating end ring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110293258 CN102364629B (en) | 2011-09-30 | 2011-09-30 | Double-U-shaped coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110293258 CN102364629B (en) | 2011-09-30 | 2011-09-30 | Double-U-shaped coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102364629A CN102364629A (en) | 2012-02-29 |
| CN102364629B true CN102364629B (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110293258 Active CN102364629B (en) | 2011-09-30 | 2011-09-30 | Double-U-shaped coil |
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| CN (1) | CN102364629B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930963B (en) * | 2012-10-22 | 2015-09-30 | 芜湖金牛电气股份有限公司 | Power transformer and manufacture method thereof |
| CN103050242A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | Double-U-shaped coil |
| CN103258625A (en) * | 2013-05-31 | 2013-08-21 | 上海鹰峰电子科技有限公司 | Photovoltaic power generation transformer |
| CN103337348B (en) * | 2013-06-28 | 2015-08-12 | 山东达驰电气有限公司 | A kind of transformer with split winding |
| CN104485218A (en) * | 2014-12-31 | 2015-04-01 | 上海和鸣变压器有限公司 | Coil structure for double-split superconducting transformer |
| CN107195444A (en) * | 2017-07-31 | 2017-09-22 | 国网上海市电力公司 | Dry type auto-transformer |
| CN107863230A (en) * | 2017-11-03 | 2018-03-30 | 天威保变(合肥)变压器有限公司 | A kind of novel screw type coil |
| CN108010689A (en) * | 2018-02-05 | 2018-05-08 | 国网河南省电力公司新乡供电公司 | A kind of dry-type transformer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953270Y (en) * | 2006-09-08 | 2007-09-26 | 中电电气集团有限公司 | Transformer sectional multilayer solenoid type coil structure |
| CN202230848U (en) * | 2011-09-30 | 2012-05-23 | 山东电力设备有限公司 | Double-U-shaped coil |
-
2011
- 2011-09-30 CN CN 201110293258 patent/CN102364629B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953270Y (en) * | 2006-09-08 | 2007-09-26 | 中电电气集团有限公司 | Transformer sectional multilayer solenoid type coil structure |
| CN202230848U (en) * | 2011-09-30 | 2012-05-23 | 山东电力设备有限公司 | Double-U-shaped coil |
Non-Patent Citations (2)
| Title |
|---|
| 谢毓城.电力变压器手册.《电力变压器手册》.机械工业出版社,2003,268页. * |
| 赵静月.变压器制造工艺.《变压器制造工艺》.2009,第22、85-86页. * |
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| CN102364629A (en) | 2012-02-29 |
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