CN101930832B - Fan-shaped cushion block for converter transformers and installation method thereof - Google Patents
Fan-shaped cushion block for converter transformers and installation method thereof Download PDFInfo
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- CN101930832B CN101930832B CN2009100122686A CN200910012268A CN101930832B CN 101930832 B CN101930832 B CN 101930832B CN 2009100122686 A CN2009100122686 A CN 2009100122686A CN 200910012268 A CN200910012268 A CN 200910012268A CN 101930832 B CN101930832 B CN 101930832B
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- shaped cushion
- coil
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Abstract
The invention relates to a fan-shaped cushion block for converter transformers and an installation method thereof. The fan-shaped cushion block is installed at the vacant position after the wire transposition and provided with a quadrant, and the quadrant is provided with an open slot. The method comprises the following steps: under the support of internal support bars, winding a wire to reach the prescribed number of turns, transposing and continuing to wind; supplementing the fan-shaped cushion block to the vacant position caused by wire transposition; and clamping a clamping block on the fan-shaped cushion block on the internal support bars of the coil. When the high-capacity converter transformer coil is used in the voltage application process, the wire at the transposition position can not be deformed, and the coil surface at the transposition position is flat without pits, thereby enhancing the electric strength of the coil; and the invention ensures smooth axial oil flow of the coil and reduces the problems of temperature rise and the like under the long-term working voltage of the converter transformer.
Description
Technical field
The present invention relates to the transformer technology of preparing, a kind of specifically fan-shaped cushion block for converter transformers and installation method thereof.
Background technology
In ± 800kV converter transformer high-voltage power equipment; Fan-shaped cushion block generally is used for the helical winding transposition, and its effect is in the coil compaction process, guarantees that coil transposition lead is indeformable; Guarantee the smooth nothing depression of transposition coil surface simultaneously, thereby improve the electrical strength of coil.Cause ± 800kV converter transformer coil is provided with axial oil duct; Reduce the temperature rise under the converter transformer long-term work voltage; And traditional fan-shaped cushion block is located between the lead of the adjacent cake of coil; The segment of fan-shaped cushion block is an enclosed construction, and transformer oil is passed through, thereby has satisfied not above-mentioned requirements.
Summary of the invention
To the above-mentioned weak point that exists in the prior art, the technical problem that the present invention will solve provides and a kind ofly can satisfy electric requirement and satisfy the temperature rise requirement again, guarantees fan-shaped cushion block for converter transformers and installation method thereof that transformer moves reliably and with long-term.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of fan-shaped cushion block for converter transformers of the present invention is installed on the vacancy after the wire transposition, has segment, and said segment is provided with open slot.
Said open slot is many, and is corresponding one by one with the axial oil duct of coil; The separation of said a plurality of open slots is the thickness of transformer coil lead; Said segment internal side diameter both sides are extended with fixture block to center of circle direction; Said fan-shaped cushion block adopts laminated paper board to make, and periphery has chamfered edge, and smooth surface does not have burr, and the width of cloth that the width of cloth of fan-shaped cushion block is less than or equal to coil to size is to size.
The installation method of a kind of fan-shaped cushion block for converter transformers of the present invention may further comprise the steps:
Under the support of interior stay, the lead coiling replaces after the regulation number of turn and continues coiling;
Add to position with fan-shaped cushion block because of the wire transposition vacancy;
Fixture block on the fan-shaped cushion block is stuck in the coil on the stay.
The present invention is further comprising the steps of:
Place the axial oil duct cushion block between lead by regulation, make the open slot on the fan-shaped cushion block corresponding one by one with the axial oil duct of coil.
The present invention has following beneficial effect and advantage:
1. it is indeformable to use big capacity converter transformer coil of the present invention transposition lead in pressure process; Guarantee the smooth nothing depression of transposition coil surface simultaneously; Thereby improve the electrical strength of coil; Guaranteed that on the other hand coil axial oil stream is smooth and easy, reduced the problems such as temperature rise under the changing into long term operating voltage.
Description of drawings
Fig. 1 is a fan-shaped cushion block for converter transformers structural front view of the present invention;
Fig. 2 is the vertical view of Fig. 1;
The axial sketch map that Fig. 3 installs for fan-shaped cushion block for converter transformers of the present invention;
The width of cloth that Fig. 4 installs for fan-shaped cushion block for converter transformers of the present invention is to sketch map.
Embodiment
Like Fig. 1, shown in 2, fan-shaped cushion block for converter transformers 1 of the present invention is installed on the vacancy after the wire transposition, has segment 11, and this segment 11 is provided with open slot 12; Said open slot 12 is many, and is corresponding one by one with the axial oil duct of coil.The separation of said a plurality of open slot 12 is the thickness of transformer coil lead; Said segment 11 is extended with fixture block 13 at internal side diameter to center of circle direction.Be to guarantee the electric strength of coil, fan-shaped cushion block 1 must be made with laminated paper board, and the periphery of this fan-shaped cushion block 1 is wanted chamfered edge simultaneously, and the width of cloth that the smooth no burr of surface treatment, its width of cloth can not exceed coil to size is to size.
Like Fig. 3, shown in 4, present embodiment is applied to fan-shaped cushion block 1 ± the coil transposition of 800kV converter transformer, installation process is following:
Under the support of interior stay 4, coil by 4 lead 3 width of cloth to and around, each line cake separates to oil duct cushion block 5 with the width of cloth.After the regulation number of turn was arrived in lead 3 coilings, 3 need of lead replaced.Lead 3 will continue coiling after wire transposition place 31 transpositions, the former position vacancy that moves into of lead 3 is come out, and need add to vacant locations with fan-shaped cushion block 1, satisfies the requirement of mechanical strength, electrical strength and the thermal characteristics of coil.Fig. 3 is seen in the placement of fan-shaped cushion block 1.In wire transposition and put the width of cloth well behind oil duct cushion block 5, fan-shaped cushion block 1 is put in vacant locations, simultaneously the fixture block 13 of fan-shaped cushion block 1 is stuck in the coil on the stay 4, fan-shaped cushion block 1 will be installed firmly, avoids scratching wire insulation during installation.Axial oil duct cushion block 6 by 3 in regulation placement lead makes the open slot 12 on the fan-shaped cushion block 1 corresponding one by one with the axial oil duct of coil, prevents that oil stream is not smooth.
Claims (6)
1. fan-shaped cushion block for converter transformers is installed on the vacancy after the wire transposition, has segment, it is characterized in that:
Said segment (11) is provided with open slot (12);
Said open slot (12) is many, and is corresponding one by one with the axial oil duct of coil.
2. by the described fan-shaped cushion block for converter transformers of claim 1, it is characterized in that: the separation of said a plurality of open slots (12) is the thickness of transformer coil lead.
3. by the described fan-shaped cushion block for converter transformers of claim 1, it is characterized in that: said segment (11) internal side diameter both sides are extended with fixture block (13) to center of circle direction.
4. by the described fan-shaped cushion block for converter transformers of claim 1, it is characterized in that: said fan-shaped cushion block (1) adopts laminated paper board to make, and periphery has chamfered edge, and smooth surface does not have burr, and the width of cloth that the width of cloth of fan-shaped cushion block (1) is less than or equal to coil to size is to size.
5. installation method by the described fan-shaped cushion block for converter transformers of claim 1 is characterized in that may further comprise the steps:
Under the support of interior stay, lead (3) coiling replaces after the regulation number of turn and continues coiling;
Add to position with fan-shaped cushion block (1) because of lead (3) transposition vacancy;
Fixture block (13) on the fan-shaped cushion block (1) is stuck on the interior stay (4) of coil;
Place the axial oil duct cushion block (6) between lead (3) by regulation, make the open slot on the fan-shaped cushion block (1) corresponding one by one with the axial oil duct of coil.
6. press the installation method of the described fan-shaped cushion block for converter transformers of claim 5; It is characterized in that: said fan-shaped cushion block (1) adopts laminated paper board to make; Periphery has chamfered edge, and smooth surface does not have burr, and the width of cloth that the width of cloth of fan-shaped cushion block (1) is less than or equal to coil to size is to size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100122686A CN101930832B (en) | 2009-06-26 | 2009-06-26 | Fan-shaped cushion block for converter transformers and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100122686A CN101930832B (en) | 2009-06-26 | 2009-06-26 | Fan-shaped cushion block for converter transformers and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101930832A CN101930832A (en) | 2010-12-29 |
| CN101930832B true CN101930832B (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100122686A Active CN101930832B (en) | 2009-06-26 | 2009-06-26 | Fan-shaped cushion block for converter transformers and installation method thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187149A (en) * | 2011-12-30 | 2013-07-03 | 洛阳恒光特种变压器有限公司 | Transformer coil breakdown prevention method |
| CN105185567B (en) * | 2014-05-29 | 2017-08-22 | 特变电工沈阳变压器集团有限公司 | A kind of K transpositions helical winding winding method |
| CN109841402B (en) * | 2019-02-22 | 2023-08-08 | 正泰电气股份有限公司 | Transformer coil pressurizing method |
| CN111681854A (en) * | 2020-05-21 | 2020-09-18 | 山东电力设备有限公司 | Transformer laminar coil structure with high overload capacity and transformer |
| CN115295292A (en) * | 2022-10-08 | 2022-11-04 | 通变电器有限公司 | High-stability spiral coil, coil binding method and power transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4633115A (en) * | 1984-03-09 | 1986-12-30 | Hitachi, Ltd. | Apparatus for connecting conductor strands with transposition in electrical rotary machine |
| CN2043000U (en) * | 1988-07-22 | 1989-08-16 | 沈阳变压器厂 | New construction coil without internal stay |
| CN2641789Y (en) * | 2003-08-06 | 2004-09-15 | 新疆特变电工股份有限公司 | Machine for working pigeon tail shape block of transformer |
| CN2857174Y (en) * | 2005-09-09 | 2007-01-10 | 特变电工沈阳变压器集团有限公司技术中心 | Dual-layer spiral coil layered stay limiter of liquid-immersed power transformer |
-
2009
- 2009-06-26 CN CN2009100122686A patent/CN101930832B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4633115A (en) * | 1984-03-09 | 1986-12-30 | Hitachi, Ltd. | Apparatus for connecting conductor strands with transposition in electrical rotary machine |
| CN2043000U (en) * | 1988-07-22 | 1989-08-16 | 沈阳变压器厂 | New construction coil without internal stay |
| CN2641789Y (en) * | 2003-08-06 | 2004-09-15 | 新疆特变电工股份有限公司 | Machine for working pigeon tail shape block of transformer |
| CN2857174Y (en) * | 2005-09-09 | 2007-01-10 | 特变电工沈阳变压器集团有限公司技术中心 | Dual-layer spiral coil layered stay limiter of liquid-immersed power transformer |
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| Publication number | Publication date |
|---|---|
| CN101930832A (en) | 2010-12-29 |
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