CN102629514B - Oil duct structure in press fitting of high voltage converter transformer and handling method of oil duct - Google Patents
Oil duct structure in press fitting of high voltage converter transformer and handling method of oil duct Download PDFInfo
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- CN102629514B CN102629514B CN201210121694.5A CN201210121694A CN102629514B CN 102629514 B CN102629514 B CN 102629514B CN 201210121694 A CN201210121694 A CN 201210121694A CN 102629514 B CN102629514 B CN 102629514B
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Abstract
The invention relates to an oil duct height control method in press fitting of transformer coils. Specifically, process cushion blocks are introduced to compress insulation quantity of wires so as to ensure an oil duct structure with designed oil duct size in the press fitting of the high voltage converter transformer coils and handling method of oil ducts. The oil duct structure in the press fitting of the high voltage converter transformer coils comprises wire copper material portions and wire turn insulation portions. The oil duct structure is characterized in that a coil heat dissipation oil duct is formed between the neighboring wire turn insulation portions, a plurality of grooves are arranged in the coil heat dissipation oil ducts, coil supporting cushion blocks are arranged in the grooves at two ends of the coil heat dissipation oil ducts respectively, and process temporary cushion blocks are arranged in the groove in the center of the coil heat dissipation oil ducts. According to the invention, heat dissipation capability of the coil oil ducts is ensured, and insulation reliability is improved.
Description
(1) technical field
Oil duct height control method while the present invention relates to transformer coil press mounting, is specially and introduces technique cushion block compression wire insulation amount oil channel structure and processing method thereof when guaranteeing the high-voltage commutation transformer coil press mounting of design oil duct size.
(2) background technology
After the radial oil duct coil of transformer cake formula winds, in order to improve its mechanical strength, need to carry out carrying out axial compression processing by press.The pressure that generally needs thousand grams/cm of pressurization coil cushion block gross area meter 25-45, in coil, insulating supporting cushion block is by compressed 8-15 ℅.In this course, the insulation of the conductor turns that contacts with lip block is stressed compressed, but the conductor turns of oil duct part insulate and do not stress not compressedly lip block scope outside, and this has just caused actual coil heat radiation oil duct height to be less than lip block thickness.Because transformer voltage is low, capacity is little, conductor turns insulation thin (1-3mm), insulating supporting cushion block thick (6-10mm), even if actual coil oil duct is a little bit smaller also more little on oily flow heat dissipation impact than lip block in history.Along with social development, transformer voltage grade improves, capacity also becomes greatly, especially super UHV, and electric pressure is high, separate unit capacity is large, and overall dimension is also very large.Transformer height need be reduced as far as possible by transportation condition restriction.Present stage, the coil support cushion block height of super UHV was reduced to 3mm or less, and in order to guarantee dielectric strength, conductor turns insulation is corresponding, and to be increased to 3-6mm even thicker.Known according to channel theory, when being less than 2mm, substantially loses the actual oil duct of coil heat-sinking capability, and it is more and more serious that therefore not compressed conductor turns insulation ties up oil duct problem.
The conventional way addressing this problem is to increase lip block minimum constructive height, such as mandatory requirement cushion block height must not be less than 4mm etc.Although this way can solve a part of problem, reduced the filling rate of coil, less economical.
(3) summary of the invention
The present invention is in order to make up the deficiencies in the prior art, provide a kind of simple in structure, easy to make, can guarantee time oil duct height, oil channel structure and processing method thereof while improving the high-voltage commutation transformer coil press mounting of coil heat-sinking capability.
The present invention is achieved through the following technical solutions:
Oil channel structure during a kind of high-voltage commutation transformer coil press mounting, comprise wire copper material and conductor turns insulation, it is characterized in that: between described adjacent wires turn insulation, form coil heat radiation oil duct, in coil heat radiation oil duct, be provided with some grooves, in the groove of coil heat radiation oil duct two ends, be respectively arranged with coil support cushion block, in coil heat radiation oil duct intermediate groove, be provided with technique temporary cushion block.
It is radial and have nargin that described technique temporary cushion block length is greater than coil.
Described technique temporary cushion block width coil heat radiation oil duct width 1/2 to 3/4 between.
Described technique temporary cushion block material selection epoxy resin bonded fiber.
Described technique temporary cushion block builds up and is surrounded by the micro-wadding of Denison outward by 2 or 3 cushion blocks.
Oil duct processing method during high-voltage commutation transformer coil press mounting, the method step is as follows: in the coil press mounting stage, in the groove of the stream oil radiator portion between every two coil support cushion blocks, increase by a technique temporary cushion block, after having press-fited, take out again.Control technique temporary cushion block and mate with coil support pad thickness, to control the decrement of adjusting the insulation of oil duct part conductor turns, guarantee actual oil duct height, improve coil heat-sinking capability.
The invention has the beneficial effects as follows: the use of technique temporary cushion block, adjust the decrement that oil duct part conductor turns insulate, guarantee actual oil duct height, guaranteed coil oil duct heat-sinking capability, improved insulating reliability; Filling rate simple in structure, easy to make, to have improved coil, good economy performance.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing 2 is loop construction schematic diagram while putting into technique temporary cushion block of the present invention;
In figure, 1 wire copper material, 2 conductor turns insulation, 3 coil heat radiation oil ducts, 4 grooves, 5 coil support cushion blocks, 6 technique temporary cushion blocks.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises wire copper material 1 and conductor turns insulation 2, between adjacent wires turn insulation 2, form coil heat radiation oil duct 3, in coil heat radiation oil duct 3, be provided with some grooves 4, in coil heat radiation oil duct 3 two ends grooves 4, be respectively arranged with coil support cushion block 5, in coil heat radiation oil duct 3 intermediate groove 4, be provided with technique temporary cushion block 6.It is radial and have nargin that technique temporary cushion block 6 length are greater than coil.Technique temporary cushion block 6 width coil heat radiation oil duct 3 width 1/2 to 3/4 between.Technique temporary cushion block 6 material selection epoxy resin bonded fibers.Technique temporary cushion block 6 builds up and is surrounded by the micro-wadding of Denison outward by 2 or 3 cushion blocks.
Oil duct processing method while adopting high-voltage commutation transformer coil press mounting of the present invention, in the coil press mounting stage, in the groove 4 of the stream oil radiator portion between every two coil support cushion blocks 5, increases by a technique temporary cushion block 6, after having press-fited, takes out again.Control technique temporary cushion block 6 and coil support cushion block 5 thickness matchings, to control the decrement of adjusting the 3 part conductor turns insulation 2 of coil heat radiation oil duct, guarantee actual oil duct height, improve coil heat-sinking capability.Through groping for a long time, test, relatively find: it is radial and have certain nargin that 1, technique temporary cushion block 6 length are greater than coil; 2, technique temporary cushion block 6 width will coil heat radiation oil duct 3 width 1/2 to 3/4 between, narrow effect declines, and is not widely drawn out easily; 3, technique temporary cushion block 6 is selected epoxy resin bonded fiber, and hardness is high, smooth surface, stable performance, material are better; 4, technique temporary cushion block 6 is built up and the micro-wadding of outsourcing Denison by 2 or 3 cushion blocks, the resistance that after reducing coil press mounting and completing, technique temporary cushion block 6 is extracted, and guaranteeing not can damage wires turn insulation 2; 5, by statistical coil parametric form, technique temporary cushion block 6 can a minute specification be reused, and has reached standardization, generalization.
Claims (3)
1. oil channel structure during a high-voltage commutation transformer coil press mounting, comprise wire copper material (1) and conductor turns insulation (2), it is characterized in that: between adjacent wires turn insulation (2), form coil heat radiation oil duct (3), in coil heat radiation oil duct (3), be provided with some grooves (4), in coil heat radiation oil duct (3) two ends grooves (4), be respectively arranged with coil support cushion block (5), in coil heat radiation oil duct (3) intermediate groove (4), be provided with technique temporary cushion block (6), it is radial and have nargin that technique temporary cushion block (6) length is greater than coil, technique temporary cushion block (6) width coil heat radiation oil duct (3) width 1/2 to 3/4 between.
2. oil channel structure during high-voltage commutation transformer coil press mounting according to claim 1, it is characterized in that: described technique temporary cushion block (6) material selection epoxy resin bonded fiber, technique temporary cushion block (6) builds up and be surrounded by the micro-wadding of Denison outward by 2 or 3 cushion blocks.
3. oil duct processing method during a high-voltage commutation transformer coil press mounting, step is as follows: in the coil press mounting stage, between adjacent wires turn insulation (2), form coil heat radiation oil duct (3), in coil heat radiation oil duct (3), be provided with some grooves (4), in coil heat radiation oil duct (3) two ends grooves (4), be respectively arranged with coil support cushion block (5), in the groove (4) of the coil heat radiation oil duct between every two coil support cushion blocks (5), increase by a technique temporary cushion block (6), after having press-fited, take out again, control technique temporary cushion block (6) and coil support cushion block (5) thickness matching, to control the decrement of adjusting coil heat radiation oil duct (3) part conductor turns insulation (2), guarantee actual oil duct height, improve coil heat-sinking capability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210121694.5A CN102629514B (en) | 2012-04-24 | 2012-04-24 | Oil duct structure in press fitting of high voltage converter transformer and handling method of oil duct |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210121694.5A CN102629514B (en) | 2012-04-24 | 2012-04-24 | Oil duct structure in press fitting of high voltage converter transformer and handling method of oil duct |
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| Publication Number | Publication Date |
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| CN102629514A CN102629514A (en) | 2012-08-08 |
| CN102629514B true CN102629514B (en) | 2014-04-30 |
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| CN201210121694.5A Active CN102629514B (en) | 2012-04-24 | 2012-04-24 | Oil duct structure in press fitting of high voltage converter transformer and handling method of oil duct |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103151904A (en) * | 2013-04-01 | 2013-06-12 | 盐城正邦环保科技有限公司 | High-power, high-frequency pulse and high-voltage rectifying transformer |
| CN109841402B (en) * | 2019-02-22 | 2023-08-08 | 正泰电气股份有限公司 | Transformer coil pressurizing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201160029Y (en) * | 2007-11-15 | 2008-12-03 | 上海市电力公司 | Solidifying winding set of oil-immersed type transformer containing reinforced layer among coiling layers |
| CN101499367A (en) * | 2008-10-23 | 2009-08-05 | 山东达驰电气有限公司 | Amorphous iron-core transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56103405A (en) * | 1980-01-22 | 1981-08-18 | Toshiba Corp | Transformer winding |
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- 2012-04-24 CN CN201210121694.5A patent/CN102629514B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201160029Y (en) * | 2007-11-15 | 2008-12-03 | 上海市电力公司 | Solidifying winding set of oil-immersed type transformer containing reinforced layer among coiling layers |
| CN101499367A (en) * | 2008-10-23 | 2009-08-05 | 山东达驰电气有限公司 | Amorphous iron-core transformer |
Non-Patent Citations (1)
| Title |
|---|
| JP昭56-103405A 1981.08.18 |
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