CN102881423B - A kind of main transformer lower-voltage foil structure and its implementation - Google Patents
A kind of main transformer lower-voltage foil structure and its implementation Download PDFInfo
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- CN102881423B CN102881423B CN201210407419.XA CN201210407419A CN102881423B CN 102881423 B CN102881423 B CN 102881423B CN 201210407419 A CN201210407419 A CN 201210407419A CN 102881423 B CN102881423 B CN 102881423B
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Abstract
The present invention discloses a kind of main transformer lower-voltage foil structure, comprises insulating paper cylinder and copper bar; Described insulating paper cylinder is provided with two sections around to identical Foil winding, and the two ends of every section of Foil winding are equipped with end insulation; Described two sections of Foil winding are respectively first paragraph Foil winding and second segment Foil winding; Insulating paper cylinder between the two ends insulation that described first paragraph Foil winding is adjacent with second segment Foil winding is provided with the first cushion block, and the outer surface of the first cushion block flushes with outermost layer Foil winding; Be provided with the second cushion block between described every layer of Foil winding, wherein the second cushion block is provided with interruption at copper bar place; The side being positioned at two copper bars of the same side is respectively provided with a piece of paper plate.In implementation method: paste stay on insulating paper cylinder, insulating paper cylinder is divided into two sections, between two sections, has gap, in gap, insert the first cushion block; The equal installation end insulation at the two ends of two sections of Foil winding; Second cushion block is set between Foil winding and Foil winding.
Description
Technical field
The present invention relates to a kind of main transformer lower-voltage foil structure and its implementation, be mainly applicable to main transformer capacity in more than 25000kvA low-voltage foil type structure and its implementation.
Background technology
In recent years, foil structure was used widely in Transformer, but also rarely found in main transformer lower-voltage foil structure.Main transformer low pressure is generally drum type brake, continous way or sped structure, this several structure but complicated from technique coiling, and efficiency is also low.
Summary of the invention
Goal of the invention: for problems of the prior art with not enough, the invention provides a kind of main transformer lower-voltage foil structure and its implementation, so-called paper tinsel is around, i.e. coil copper or aluminium foil coiling.Because the electric current of low-voltage coil is usually comparatively large, if want several paralleled conductor with wire-wound, if adopt when coiling laminar can produce very large helical angle, when transformer is short-circuited time, very large mechanical force can be produced in the vertical direction of coil, cause the damage of coil.And the end of foil is flat, therefore axial force when its short circuit is the part of winding structure, and it has stronger anti-short circuit capability; Adopt foil can reduce coil two ends helical angle, reduce uneven ampere-turn; The axial electric power that during short circuit, width produces to leakage field also can reduce; Foil winding turn-to-turn capacitance is large, and electric potential gradient is little, and shock resistance voltage capability is strong.
Main transformer adopts foil structure somewhat different with conventional distribution transforming, and the conventional distribution low-voltage number of turn is few, and the number of plies is also few, and width is to also just little; And main transformer low pressure adopt paper tinsel around, the number of turn is often more than 100 circles, and low pressure energy makes the minimum 500kvA being in fact equivalent to capacity of distribution transform at this capacity of 25000kvA(of capacity of foil structure); Foil structure is used on main transformer a feature, Large Copacity, big current, and this situation specification is difficult to choose, and often occurs that paper tinsel is very high, very thin; In light of this situation, winding is divided into upper and lower two sections by us, two sections be all same around to, in winding process, after complete one section mould (coil) left and right directions exchange (two sections of coil flux directions are consistent).
Technical scheme: a kind of main transformer lower-voltage foil structure, comprises insulating paper cylinder and copper bar; Described insulating paper cylinder is provided with two sections around to identical Foil winding, and the two ends of every section of Foil winding are equipped with end insulation; Described two sections of Foil winding are respectively first paragraph Foil winding and second segment Foil winding; Insulating paper cylinder between the two ends insulation that described first paragraph Foil winding is adjacent with second segment Foil winding is provided with the first cushion block, and the outer surface of the first cushion block flushes with outermost layer Foil winding; Be provided with the second cushion block between described every layer of Foil winding, wherein the second cushion block is provided with interruption at copper bar place; The side being positioned at two copper bars of the same side is respectively provided with a piece of paper plate.
The Foil winding of described first paragraph Foil winding and second segment Foil winding is 62.5 layers, totally 125 layers; For a left side around to.
Spacing between described first paragraph Foil winding and second segment Foil winding is 36mm.
The end insulation on end of described first paragraph Foil winding and second segment Foil winding is 15mm, is 25mm away from the end insulation on end; Wherein, insulating surface is held to be provided with adhesive-layer.
Described insulating paper cylinder is provided with stay, and described cardboard is of a size of 0.5mm*100mm*430mm, and cardboard exceeds Foil winding 50mm.
An implementation method for main transformer lower-voltage foil structure, comprising:
(1), on insulating paper cylinder, stay is pasted, insulating paper cylinder is divided into first paragraph Foil winding and second segment Foil winding two sections, gap 36mm is had between first paragraph Foil winding and second segment Foil winding two sections, every section of Foil winding is around being 62.5 layers of Foil winding, totally 125 layers, be left around to, after the Foil winding on complete first paragraph Foil winding, insulating paper cylinder left and right directions is exchanged, then around Foil winding on second segment Foil winding;
(2), at first paragraph Foil winding and second segment Foil winding weld Copper Foil respectively, and reserve a segment length 1 meter of Copper Foil, colligation is fixed on Foil winding;
(3), at the equal installation end in two ends of first paragraph Foil winding and second segment Foil winding insulate, the end insulation between first paragraph Foil winding and second segment Foil winding is 15mm, and the insulation of all the other ends is 25mm;
(4) insert 4 or 5 first cushion blocks in the gap, between first paragraph Foil winding and second segment Foil winding, ensure that the first cushion block lateral surface is concordant with outer Foil winding lateral surface;
(5), between Foil winding and Foil winding, arrange the second cushion block, copper bar, by spaced apart for the second cushion block, regulates the width of Foil winding to height;
(6), in the side of two copper bars being positioned at the same side be respectively provided with a piece of paper plate, cardboard is of a size of 0.5mm*100mm*430mm, and makes cardboard exceed Foil winding 50mm.
Beneficial effect: compared with prior art, main transformer lower-voltage foil structure provided by the present invention and its implementation, adopt foil can reduce coil two ends helical angle, reduce uneven ampere-turn; The axial electric power that during short circuit, width produces to leakage field also can reduce; Foil winding turn-to-turn capacitance is large, and electric potential gradient is little, and shock resistance voltage capability is strong.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the B direction view of Fig. 1;
Fig. 4 is the partial enlarged drawing of Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further.
As Figure 1-4, main transformer lower-voltage foil structure, comprises insulating paper cylinder 1 and copper bar 2; Described insulating paper cylinder is provided with two sections around to identical Foil winding 3, and the two ends of every section of Foil winding 3 are equipped with end insulation 4; Described two sections of Foil winding 3 are respectively first paragraph Foil winding 5 and second segment Foil winding 6; The outer surface that insulating paper cylinder between the two ends insulation that described first paragraph Foil winding 5 is adjacent with second segment Foil winding 6 is provided with the first cushion block 7, first cushion block 7 flushes with outermost layer Foil winding 3; Be provided with the second cushion block 8 between described every layer of Foil winding 3, wherein the second cushion block 8 is provided with interruption at copper bar 2 place; The side being positioned at two copper bars 2 of the same side is respectively provided with a piece of paper plate 11.
The Foil winding 3 of first paragraph Foil winding 5 and second segment Foil winding 6 is 62.5 layers, totally 125 layers be left around to.
Spacing between first paragraph Foil winding 5 and second segment Foil winding 6 is 36mm.
The end insulation 4 on end of first paragraph Foil winding 5 and second segment Foil winding 6 is 15mm, is 25mm away from the end insulation 4 on end; Wherein, insulation 4 surface is held to be provided with adhesive-layer.
Insulating paper cylinder 1 is provided with stay 12, and cardboard 11 is of a size of 0.5mm*100mm*430mm, and cardboard 11 exceeds Foil winding 350mm.
The implementation method of main transformer lower-voltage foil structure, comprising:
(1), on insulating paper cylinder 1 paste stay 12, insulating paper cylinder 1 be divided into first paragraph Foil winding 5 and second segment Foil winding 6 two sections,
Gap 36mm is had between first paragraph Foil winding 5 and second segment Foil winding 6 two sections, Foil winding 3 all around being 62.5 layers of Foil winding, totally 125 layers, be left around to, after Foil winding 3 on complete first paragraph foil 5 winding, insulating paper cylinder 1 left and right directions is exchanged, then around Foil winding 3 on second segment Foil winding 6;
(2), at first paragraph Foil winding 5 and second segment Foil winding 6 weld Copper Foil respectively, and reserve a segment length 1 meter of Copper Foil, colligation is fixed on Foil winding;
(3), at the equal installation end in two ends of first paragraph Foil winding 5 and second segment Foil winding 6 insulate 4, the end insulation 4 between first paragraph Foil winding 5 and second segment Foil winding 6 is 15mm, and all the other ends insulation 4 is 25mm;
(4) insert 4 or 5 first cushion blocks 7 in the gap, between first paragraph Foil winding 5 and second segment Foil winding 6, ensure that the first cushion block 7 lateral surface is concordant with outer Foil winding 3 lateral surface;
(5), between Foil winding 3 and Foil winding 3, arrange the second cushion block 8, copper bar 2, by spaced apart for the second cushion block 8, regulates the width of Foil winding 3 to height;
(6), in the side of two copper bars 2 being positioned at the same side be respectively provided with a piece of paper plate 11, cardboard 11 is of a size of 0.5mm*100mm*430mm, and makes cardboard 11 exceed Foil winding 350mm.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, and these improvement also should be considered as protection scope of the present invention.
Claims (4)
1. a main transformer lower-voltage foil structure, is characterized in that: comprise insulating paper cylinder and copper bar; Described insulating paper cylinder is provided with two sections around to identical Foil winding, and the two ends of every section of Foil winding are equipped with end insulation; Described two sections of Foil winding are respectively first paragraph Foil winding and second segment Foil winding; Insulating paper cylinder between the two ends insulation that described first paragraph Foil winding is adjacent with second segment Foil winding is provided with the first cushion block, and the outer surface of the first cushion block flushes with outermost layer Foil winding; Be provided with the second cushion block between first paragraph Foil winding and every layer of Foil winding of second segment Foil winding, wherein copper bar is by spaced apart for the second cushion block; The side being positioned at two copper bars of the same side is respectively provided with a piece of paper plate; The Foil winding of described first paragraph Foil winding and second segment Foil winding is 62.5 layers, totally 125 layers, be left around to; Spacing between described first paragraph Foil winding and second segment Foil winding is 36mm.
2. main transformer lower-voltage foil structure as claimed in claim 1, is characterized in that: the end insulation on end of described first paragraph Foil winding and second segment Foil winding is 15mm, is 25mm away from the end insulation on end; Wherein, insulating surface is held to be provided with adhesive-layer.
3. main transformer lower-voltage foil structure as claimed in claim 1, it is characterized in that: described insulating paper cylinder is provided with stay, described cardboard is of a size of 0.5mm*100mm*430mm, and cardboard exceeds Foil winding 50mm.
4. an implementation method for main transformer lower-voltage foil structure, is characterized in that, comprising:
(1), on insulating paper cylinder, stay is pasted, insulating paper cylinder is divided into first paragraph and second segment, at first paragraph and second segment coiling first paragraph Foil winding and the second segment Foil winding respectively of insulating paper cylinder, between first paragraph Foil winding and second segment Foil winding two sections, there is gap; Every section of Foil winding winding layer number with around to all identical, on insulating paper cylinder first paragraph after complete first paragraph Foil winding, insulating paper cylinder left and right directions to be exchanged, then around second segment Foil winding on insulating paper cylinder second segment;
(2), at first paragraph Foil winding and second segment Foil winding weld Copper Foil respectively, and reserve one section of Copper Foil, colligation is fixed on Foil winding;
(3), insulate at the equal installation end in two ends of first paragraph Foil winding and second segment Foil winding;
(4) insert the first cushion block in the gap, between first paragraph Foil winding and second segment Foil winding, make the first cushion block lateral surface concordant with outer Foil winding lateral surface;
(5), between every layer of Foil winding and Foil winding of first paragraph Foil winding and second segment Foil winding arrange the second cushion block, copper bar is by spaced apart for the second cushion block;
(6), a piece of paper plate is respectively provided with in the side of two copper bars being positioned at the same side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210407419.XA CN102881423B (en) | 2012-10-23 | 2012-10-23 | A kind of main transformer lower-voltage foil structure and its implementation |
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| CN201210407419.XA CN102881423B (en) | 2012-10-23 | 2012-10-23 | A kind of main transformer lower-voltage foil structure and its implementation |
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| CN102881423A CN102881423A (en) | 2013-01-16 |
| CN102881423B true CN102881423B (en) | 2015-11-18 |
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| CN105810411B (en) * | 2016-04-27 | 2017-06-27 | 白城电力镇赉变压器有限责任公司 | The technique of the winding integrated coiling foil winding of axial split transformer low voltage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201215757Y (en) * | 2008-07-04 | 2009-04-01 | 济南第二变压器厂有限公司 | Three-phase oil immersion electric power transformer |
| CN201229836Y (en) * | 2008-07-15 | 2009-04-29 | 沈阳沈变中型变压器有限责任公司 | Low voltage winding construction for high voltage large capacity electric power transformer |
| CN202930173U (en) * | 2012-10-23 | 2013-05-08 | 中电电气(江苏)股份有限公司 | Main transformer low-voltage foil type structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5933810A (en) * | 1982-08-20 | 1984-02-23 | Toshiba Corp | Foil-wound transformer |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201215757Y (en) * | 2008-07-04 | 2009-04-01 | 济南第二变压器厂有限公司 | Three-phase oil immersion electric power transformer |
| CN201229836Y (en) * | 2008-07-15 | 2009-04-29 | 沈阳沈变中型变压器有限责任公司 | Low voltage winding construction for high voltage large capacity electric power transformer |
| CN202930173U (en) * | 2012-10-23 | 2013-05-08 | 中电电气(江苏)股份有限公司 | Main transformer low-voltage foil type structure |
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Effective date of registration: 20200603 Address after: 212200, No. 188, CLP Road, Yangzhong, Jiangsu, Zhenjiang Patentee after: CLP (Jiangsu) transformer technology Co.,Ltd. Address before: 212200, No. 188, CLP Road, Yangzhong, Jiangsu, Zhenjiang Patentee before: CEEG (JIANGSU) Co.,Ltd. |
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Effective date of registration: 20210916 Address after: 212200 Zhongdian Avenue, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee after: CEEG (JIANGSU) Co.,Ltd. Address before: No. 188, Zhongdian Avenue, Yangzhong City, Zhenjiang City, Jiangsu Province, 212200 Patentee before: CLP (Jiangsu) transformer technology Co.,Ltd. |
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Effective date of registration: 20220310 Address after: No. 188, Zhongdian Avenue, Yangzhong City, Zhenjiang City, Jiangsu Province, 212200 Patentee after: CLP (Jiangsu) transformer manufacturing Co.,Ltd. Address before: 212200 Zhongdian Avenue, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee before: CEEG (JIANGSU) Co.,Ltd. |