CN102629514A - 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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- CN102629514A CN102629514A CN2012101216945A CN201210121694A CN102629514A CN 102629514 A CN102629514 A CN 102629514A CN 2012101216945 A CN2012101216945 A CN 2012101216945A CN 201210121694 A CN201210121694 A CN 201210121694A CN 102629514 A CN102629514 A CN 102629514A
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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 when the present invention relates to transformer coil press mounting is specially and introduces technology 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, need carry out carrying out the axial compression processing through press in order to improve its mechanical strength.Generally need the pressure of pressurization coil cushion block gross area meter 25-45 kilogram/square centimeter, the insulating support pad piece will be compressed 8-15 ℅ in the coil.In this course, stressed being compressed of the conductor turns that contacts with lip block insulation, but the conductor turns of oil duct part insulate not stress and is not compressed the lip block scope outside, and this has just caused actual coil heat radiation oil duct height less than lip block thickness.Because transformer voltage is low, capacity is little, conductor turns insulation thin (1-3mm), insulating support pad piece thick (6-10mm) are even the actual coil oil duct is a little bit smaller also more little to the wandering thermal impact of oil than lip block in history.Along with the development of society, the transformer voltage grade improves, capacity also becomes greatly, especially ultra ultra high voltage converter transformer, and electric pressure is high, the separate unit capacity is big, and overall dimension is also very big.Receive the transportation condition restriction to need to reduce the transformer height as far as possible.Present stage, the coil support cushion block height of ultra ultra high voltage converter transformer was reduced to 3mm or littler, in order to guarantee dielectric strength, the then corresponding 3-6mm even thicker that is increased to of conductor turns insulation.Can know that according to channel theory when the actual oil duct of coil is lost heat-sinking capability during less than 2mm basically, it is more and more serious that therefore not compressed conductor turns insulation ties up the oil duct problem.
The conventional way that addresses this problem is to increase the lip block minimum constructive height, must not be less than 4mm such as mandatory requirement cushion block height etc.Though 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 remedy the deficiency of 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 when improving the high-voltage commutation transformer coil press mounting of coil heat-sinking capability.
The present invention realizes through following technical scheme:
Oil channel structure during a kind of high-voltage commutation transformer coil press mounting; Comprise the insulation of lead copper material and conductor turns; It is characterized in that: form the coil heat radiation oil duct between the said adjacent wires turn insulation; Be provided with some grooves in the coil heat radiation oil duct, be respectively arranged with the coil support cushion block in the groove of coil heat radiation oil duct two ends, be provided with the interim cushion block of technology in the coil heat radiation oil duct intermediate groove.
The interim cushion block length of said technology is radial and nargin arranged greater than coil.
The interim cushion block width of said technology coil heat radiation oil duct width 1/2 to 3/4 between.
The interim cushion block material of said technology is selected epoxy resin bonded fiber for use.
The interim cushion block of said technology builds up and is surrounded by the little wadding of Denison outward by 2 or 3 cushion blocks.
Oil duct processing method during a kind of high-voltage commutation transformer coil press mounting, this method step is following: in the coil press mounting stage, in the groove of the stream oil radiator portion between per two coil support cushion blocks, increase the interim cushion block of a technology, take out after press-fiting completion again.Control interim cushion block of technology and coil support pad thickness coupling, the decrement with the insulation of control adjustment oil duct part conductor turns guarantees actual oil duct height, improves the coil heat-sinking capability.
The invention has the beneficial effects as follows: the use of the interim cushion block of technology, the decrement of adjustment oil duct part conductor turns insulation guarantees actual oil duct height, has guaranteed coil oil duct heat-sinking capability, has improved insulating reliability; Filling rate simple in structure, easy to make, as to have improved coil, good economy performance.
(4) description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Accompanying drawing 1 is the preceding loop construction sketch map of the interim cushion block of technology of putting into of the present invention;
Accompanying drawing 2 is loop construction sketch map when putting into the interim cushion block of technology of the present invention;
Accompanying drawing 3 is a loop construction sketch map behind the interim cushion block of extraction technology of the present invention;
Among the figure, 1 lead copper material, the insulation of 2 conductor turns, 3 coil heat radiation oil ducts, 4 grooves, 5 coil support cushion blocks, the interim cushion block of 6 technologies.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises lead copper material 1 and conductor turns insulation 2; Form coil heat radiation oil duct 3 between the adjacent wires turn insulation 2; Be provided with some grooves 4 in the coil heat radiation oil duct 3; Be respectively arranged with coil support cushion block 5 in the coil heat radiation oil duct 3 two ends grooves 4, be provided with the interim cushion block 6 of technology in coil heat radiation oil duct 3 intermediate groove 4.Interim cushion block 6 length of technology are radial and nargin arranged greater than coil.Interim cushion block 6 width of technology coil heat radiation oil duct 3 width 1/2 to 3/4 between.Interim cushion block 6 materials of technology are selected epoxy resin bonded fiber for use.The interim cushion block 6 of technology builds up and is surrounded by the little wadding of Denison outward by 2 or 3 cushion blocks.
Oil duct processing method when 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 per two coil support cushion blocks 5, increases the interim cushion block 6 of a technology, takes out after press-fiting completion again.Interim cushion block 6 of control technology and coil support cushion block 5 thickness coupling, the decrement with control adjustment coil heat radiation oil duct 3 part conductor turns insulation 2 guarantees actual oil duct height, improves the coil heat-sinking capability.Through groping for a long time, test, relatively finding: it is radial and certain nargin arranged that 1, interim cushion block 6 length of technology are greater than coil; 2, interim cushion block 6 width of technology will coil heat radiation oil duct 3 width 1/2 to 3/4 between, narrow effect descends, and widely is not drawn out easily; 3, the interim cushion block 6 of technology is selected epoxy resin bonded fiber for use, and hardness height, smooth surface, stable performance, material are better; 4, the interim cushion block 6 of technology is built up and the little wadding of outsourcing Denison by 2 or 3 cushion blocks, reduces coil press mounting and accomplishes the resistance that the back interim cushion block 6 of technology is extracted, and assurance can damage wires turn insulation 2; 5, through the statistical coil parametric form, the interim cushion block 6 of technology can divide specification to reuse, and has reached standardization, generalization.
Claims (7)
1. oil channel structure during a high-voltage commutation transformer coil press mounting; Comprise lead copper material (1) and conductor turns insulation (2); It is characterized in that: form coil heat radiation oil duct (3) between the said adjacent wires turn insulation (2); Be provided with some grooves (4) in the coil heat radiation oil duct (3), be respectively arranged with coil support cushion block (5) in coil heat radiation oil duct (3) the two ends grooves (4), be provided with the interim cushion block of technology (6) in coil heat radiation oil duct (3) intermediate groove (4).
2. oil channel structure during high-voltage commutation transformer coil press mounting according to claim 1 is characterized in that: the interim cushion block of said technology (6) length is radial and nargin arranged greater than coil.
3. oil channel structure during high-voltage commutation transformer coil press mounting according to claim 1 is characterized in that: the interim cushion block of said technology (6) width coil heat radiation oil duct (3) width 1/2 to 3/4 between.
4. oil channel structure during high-voltage commutation transformer coil press mounting according to claim 1, it is characterized in that: the interim cushion block of said technology (6) material is selected epoxy resin bonded fiber for use.
5. oil channel structure during high-voltage commutation transformer coil press mounting according to claim 1, it is characterized in that: the interim cushion block of said technology (6) builds up and is surrounded by the little wadding of Denison outward by 2 or 3 cushion blocks.
6. oil duct processing method during high-voltage commutation transformer coil press mounting according to claim 1; Step is following: in the coil press mounting stage; In the groove (4) of the stream oil radiator portion between per two coil support cushion blocks (5); Increase the interim cushion block of a technology (6), press-fit after the completion and take out again.
7. control interim cushion block of technology (6) and coil support cushion block (5) thickness coupling to control the decrement of adjustment coil heat radiation oil duct (3) part conductor turns insulation (2), guarantee actual oil duct height, improve the 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102629514A true CN102629514A (en) | 2012-08-08 |
| CN102629514B CN102629514B (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109841402A (en) * | 2019-02-22 | 2019-06-04 | 正泰电气股份有限公司 | Transformer coil pressure method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56103405A (en) * | 1980-01-22 | 1981-08-18 | Toshiba Corp | Transformer winding |
| 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 |
-
2012
- 2012-04-24 CN CN201210121694.5A patent/CN102629514B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56103405A (en) * | 1980-01-22 | 1981-08-18 | Toshiba Corp | Transformer winding |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109841402A (en) * | 2019-02-22 | 2019-06-04 | 正泰电气股份有限公司 | Transformer coil pressure method |
| CN109841402B (en) * | 2019-02-22 | 2023-08-08 | 正泰电气股份有限公司 | Transformer coil pressurizing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102629514B (en) | 2014-04-30 |
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