CN103346003B - Dry-type power transformer low pressure 10kV coil new construction - Google Patents
Dry-type power transformer low pressure 10kV coil new construction Download PDFInfo
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- CN103346003B CN103346003B CN201310298837.4A CN201310298837A CN103346003B CN 103346003 B CN103346003 B CN 103346003B CN 201310298837 A CN201310298837 A CN 201310298837A CN 103346003 B CN103346003 B CN 103346003B
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Abstract
The present invention relates to a kind of dry-type power transformer low pressure 10kV coil new construction, comprise coil, the head line of described coil and buttock line are drawn from the two ends of coil respectively, and described coil windings adopts S shape multistage layered structure, and described coil axis adopts small airway; The inner surface of described coil windings is provided with inner insulating layer, and outer surface is provided with external insulation layer, and the two ends up and down of described inner insulating layer and external insulation layer, all higher than winding, are cast with insulating resin between described inner insulating layer and external insulation layer.Head, the tail outlet of this dry-type power transformer low pressure 10kV coil are not drawn from the upper and lower end of coil, coil inside have employed multistage layered structure, interlayer and section field intensity reduce greatly, and performance is easy to control the office of transformer to be put etc., and technique winding method is easy; Coil axis have employed small airway, therefore reduces the profile of whole coil, and then reduces the monnolithic case size of transformer, makes the cost of transformer have larger decline.
Description
Technical field
The present invention relates to a kind of dry-type power transformer low pressure 10kV coil new construction.
Background technology
10 ~ 35kV level non-excitation pressure adjustment dry-type power transformer is high pressure is 10 ~ 35kV electric pressure, and low pressure is the transformer of 3 ~ 10kV electric pressure; Because low-voltage coil is interior loop, electric pressure is high, so low-pressure structure and profile have larger impact to the performance of whole transformer and cost when product design.In product design in the past, because low-voltage coil electric pressure is high, electric current is little, so usually adopt double-deck or four layers of winding structure; But this structure can cause voltage between layers higher, interlayer must adopt big airways or thick layer insulation.
Dry-type power transformer low pressure 10kV loop construction as shown in Figure 1 in the past, winding head, tail outlet a(b, c), x(y, z) in same one end, interlayer must adopt big airways 3 could meet the electric property of coil, but the overall dimension of transformer whole profile, particularly iron core certainly will be considerably increased like this, cause transformer cost greatly to improve.
Summary of the invention
The present invention is directed to above-mentioned prior art Problems existing and make improvement, namely technical problem to be solved by this invention is to provide a kind of interlayer, section field intensity is low and the dry-type power transformer low pressure 10kV coil new construction that overall dimension is little.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of dry-type power transformer low pressure 10kV coil new construction, comprise coil, the head line of described coil and buttock line are drawn from the two ends of coil respectively, described coil windings adopts S shape multistage layered structure, and described coil axis adopts small airway.
Further, the inner surface of described coil windings is provided with inner insulating layer, and outer surface is provided with external insulation layer, and the two ends up and down of described inner insulating layer and external insulation layer, all higher than winding, are cast with insulating resin between described inner insulating layer and external insulation layer.
Further, described coil height is 1050mm, and described coil width is 45mm to thickness.
Further, the upper-end inner diameter of described small airway is 15mm, and bottom diameter is 14mm.
Compared with prior art, the present invention has following beneficial effect: head, the tail outlet of this dry-type power transformer low pressure 10kV coil are not drawn from the upper and lower end of coil, coil inside have employed multistage layered structure, interlayer and section field intensity reduce greatly, performance is easy to control the office of transformer to be put etc., and technique winding method is easy; Coil axis have employed small airway, therefore reduces the profile of whole coil, and then reduces the monnolithic case size of transformer, makes the cost of transformer have larger decline.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of dry-type power transformer low pressure 10kV coil in the past.
Fig. 2 is the structural representation of dry-type power transformer low pressure 10kV coil of the present invention.
In figure: a-head line, x-buttock line, 1-first encapsulates, and 2-second encapsulates, 3-big airways, 4-small airway, 5-inner insulating layer, 6-external insulation layer.
Embodiment
As shown in Figure 2, a kind of dry-type power transformer low pressure 10kV coil new construction, comprise coil, head line a(b, the c of described coil) and buttock line x(y, z) draw from the two ends of coil respectively, described coil windings adopts S shape multistage layered structure, greatly reduce electric field strength between winding layers and intersegmental, performance is easy to control the office of transformer to be put etc., and technique winding method is easy; Described coil axis adopts small airway, reduces the profile of whole coil, and then reduces the monnolithic case size of transformer, makes the cost of transformer have larger decline.
In the present embodiment, the inner surface of described coil windings is provided with inner insulating layer 5, and outer surface is provided with external insulation layer 6, and the two ends up and down of described inner insulating layer 5 and external insulation layer 6 are all higher than winding, insulating resin is cast with, such as epoxy resin etc. between described inner insulating layer 5 and external insulation layer 6.
In the present embodiment, the height H of dry-type power transformer low pressure 10kV coil of the present invention is 1050mm, and described coil width is 45mm to thickness D; The upper-end inner diameter d1 of described small airway is 15mm, and bottom diameter d2 is 14mm.And the height H of the low pressure 10kV of dry-type power transformer in the past coil in Fig. 1 is 1100mm, coil width is 56.5mm to thickness D, and the upper-end inner diameter d1 of big airways is 35mm, and bottom diameter d2 is 34mm.Obviously, whole coil shape of the present invention is less than existing ad eundem coil, and then reduces the monnolithic case size of transformer, is conducive to the cost reducing transformer.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (1)
1. a dry-type power transformer low pressure 10kV coil new construction, comprise coil, described coil is interior loop, it is characterized in that: the head line of described coil and buttock line are drawn from the two ends of coil respectively, described coil windings adopts S shape multistage layered structure, and described coil height is 1050mm, described coil width is 45mm to thickness, described coil axis adopts small airway, and the upper-end inner diameter of described small airway is 15mm, and bottom diameter is 14mm; The inner surface of described coil windings is provided with inner insulating layer, and outer surface is provided with external insulation layer, and the two ends up and down of described inner insulating layer and external insulation layer, all higher than winding, are cast with insulating resin between described inner insulating layer and external insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310298837.4A CN103346003B (en) | 2013-07-17 | 2013-07-17 | Dry-type power transformer low pressure 10kV coil new construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310298837.4A CN103346003B (en) | 2013-07-17 | 2013-07-17 | Dry-type power transformer low pressure 10kV coil new construction |
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| Publication Number | Publication Date |
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| CN103346003A CN103346003A (en) | 2013-10-09 |
| CN103346003B true CN103346003B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310298837.4A Active CN103346003B (en) | 2013-07-17 | 2013-07-17 | Dry-type power transformer low pressure 10kV coil new construction |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158353B (en) * | 2016-08-25 | 2017-12-15 | 宁波奥克斯高科技有限公司 | A kind of winding method of high-tension coil |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2300175Y (en) * | 1997-04-07 | 1998-12-09 | 云南变压器厂 | Dry power transformer |
| EP2075806A1 (en) * | 2007-12-27 | 2009-07-01 | Elettromeccanica di Marnate S.p.A. | Dry-type resin-insulated transformer with shielded side-by-side primary windings |
| CN101556864A (en) * | 2009-01-23 | 2009-10-14 | 广东海鸿变压器有限公司 | Method for winding resin insulating dry type transformer coil |
| CN201498329U (en) * | 2009-06-19 | 2010-06-02 | 天津天能变压器有限公司 | 35 kV resin-casting dry-type transformer |
| CN202473553U (en) * | 2012-02-29 | 2012-10-03 | 山东威特变压器厂 | Dry type transformer |
| CN202650811U (en) * | 2012-06-11 | 2013-01-02 | 常熟市常源变压器有限公司 | Low-voltage coil for dry type transformer |
-
2013
- 2013-07-17 CN CN201310298837.4A patent/CN103346003B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2300175Y (en) * | 1997-04-07 | 1998-12-09 | 云南变压器厂 | Dry power transformer |
| EP2075806A1 (en) * | 2007-12-27 | 2009-07-01 | Elettromeccanica di Marnate S.p.A. | Dry-type resin-insulated transformer with shielded side-by-side primary windings |
| CN101556864A (en) * | 2009-01-23 | 2009-10-14 | 广东海鸿变压器有限公司 | Method for winding resin insulating dry type transformer coil |
| CN201498329U (en) * | 2009-06-19 | 2010-06-02 | 天津天能变压器有限公司 | 35 kV resin-casting dry-type transformer |
| CN202473553U (en) * | 2012-02-29 | 2012-10-03 | 山东威特变压器厂 | Dry type transformer |
| CN202650811U (en) * | 2012-06-11 | 2013-01-02 | 常熟市常源变压器有限公司 | Low-voltage coil for dry type transformer |
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| CN103346003A (en) | 2013-10-09 |
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Address after: 100030 Beijing Xicheng District West Chang'an Avenue 86 Co-patentee after: FUZHOU TIANYU ELECTRIC Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 100761 West Chang'an Avenue, Xicheng District, Xicheng District, Beijing Co-patentee before: FUZHOU TIANYU ELECTRIC Co.,Ltd. Patentee before: State Grid Corporation of China |
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Effective date of registration: 20181220 Address after: 350108 304-A115, 3rd floor, Pioneer Building, 8th East Science and Technology Road, Shangjie Town, Minhou County, Fuzhou City, Fujian Province Patentee after: Fuzhou Xuji Electric Co.,Ltd. Address before: 100030 Beijing Xicheng District West Chang'an Avenue 86 Co-patentee before: FUZHOU TIANYU ELECTRIC Co.,Ltd. Patentee before: State Grid Corporation of China |
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