CN203397859U - Oil-immersed power distribution transformer coil - Google Patents
Oil-immersed power distribution transformer coil Download PDFInfo
- Publication number
- CN203397859U CN203397859U CN201320506636.4U CN201320506636U CN203397859U CN 203397859 U CN203397859 U CN 203397859U CN 201320506636 U CN201320506636 U CN 201320506636U CN 203397859 U CN203397859 U CN 203397859U
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- winding
- stay
- oil
- coil
- distribution transformer
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Abstract
The utility model relates to an oil-immersed power distribution transformer coil, which comprises a winding reeling an iron core, wherein insulating paper is arranged between adjacent layers of the winding; the parts of the winding at the two ends of the long-axis direction of the coil form arc parts, and the parts of the winding at the two ends of the short-axis direction of the coil form straight parts; three half oil ways are formed in the arc part at each of the two ends of the coil. According to the oil-immersed power distribution transformer coil, oil way structures are improved, so that not only is good convection ensured, but also the thermal conductivity is improved.
Description
(1) technical field
The utility model relates to a kind of loop construction of oil immersion-type distribution transformer.
(2) background technology
Oil immersion-type distribution transformer winding dispels the heat in three kinds of modes: a, radiation b, convection current c, conduction.A wider heat radiation oil duct of the general employing of oil immersion-type distribution transformer of prior art as Fig. 1-5, circumferentially arranges a full oil duct 11 between certain adjacent two layers winding 12, and the project organization of oil duct is corrugated sheet or stay curtain, and oil clearance is of a size of 3.5～5.5.The convection effects of this class oil duct transformer oil is fine, but because the cardboard of corrugated sheet and stay curtain is almost covered with between adjacent layer winding, causes heat conducting effect poor, and the measured value of transformer temperature rise is often higher than calculated value.
(3) summary of the invention
In order to overcome the above-mentioned deficiency of prior art, the utility model provides the oil immersion-type distribution transformer coil that a kind of radiating efficiency is high.
The technical scheme in the invention for solving the technical problem is:
A kind of oil immersion-type distribution transformer coil, comprise the winding being wound on iron core, between adjacent layer winding, be provided with insulating paper, the winding that is positioned at the two ends of coil long axis direction is curved portions, the winding that is positioned at the two ends of coil short-axis direction is straight shape portion, and the curved portions that is positioned at coil two ends is provided with respectively 3 road half oil ducts.
As preferably, half oil duct is the stay chain being arranged between adjacent layer curved portions winding, and stay chain comprises one or more banded and spaced stay, and the two ends of stay are bonded in respectively and on two adhesive tapes, form described stay chain.
As preferably, an interval 1/4th winding layers numbers between every adjacent half oil duct, and half oil duct at coil two ends is symmetrical arranged.
As preferably, stay is equidistantly arranged, and spacing is 18～22 millimeters, and the width of stay is 8 millimeters, and thickness is 2 millimeters, and adhesive tape width is 10 millimeters.
Full oil duct of the prior art is arranged to half oil duct, and half oil duct is arranged on the curved portions at the major axis two ends of coil, and three roads are set respectively, the coil number of plies is divided into 4 parts, and be symmetrical arranged, half oil duct is stay chain structure, and spaced stay is bonded in adhesive tape.Because the permeability of transformer oil is fine, little oil duct also can reach good convection current.Because the increase of oil duct quantity, strengthens heat conducting ability greatly, the temperature rise of winding hottest point is effectively improved, so the whole temperature rise of winding has reduced.Adopt corrugated board and stay curtain oil duct, the cardboard in oil duct has played certain iris action to radiating surface.Stay chain has been eliminated this obstruct, thereby has strengthened the useful effect of radiating surface.The width dimensions of stay is 8 millimeters, and interval centre-to-centre spacing is 18～22 millimeters, is to guarantee that the unobstructed stay that do not cause again of oil duct occupies the optimum size that too much covers radiating surface.
The beneficial effects of the utility model are: the utility model, by oil channel structure is improved, makes it not only guarantee good convection current, and increased heat-conductive characteristic.
(4) accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of prior art.
Fig. 2 is the plan structure schematic diagram of the corrugated sheet of prior art.
Fig. 3 is the main TV structure schematic diagram of Fig. 2.
Fig. 4 is the plan structure schematic diagram of the stay curtain of prior art.
Fig. 5 is the main TV structure schematic diagram of Fig. 4.
Fig. 6 is structural representation of the present utility model.
Fig. 7 is the plan structure schematic diagram of stay chain of the present utility model.
Fig. 8 is the main TV structure schematic diagram of Fig. 5.
(5) embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Fig. 6-8, a kind of oil immersion-type distribution transformer coil 3, comprise and be wound on upper winding unshakable in one's determination, between adjacent layer winding, be provided with insulating paper, the winding that is positioned at the two ends of coil long axis direction is curved portions 2, the winding that is positioned at the two ends of coil minor axis is straight shape portion 4, the curved portions 2 that is positioned at coil two ends is respectively arranged with 3 road half oil ducts 1, the half oil duct position at coil two ends is symmetrical arranged, it is 3 pairs, and the winding number of plies is separated into uniform 4 parts, i.e. an interval 1/4th winding layers numbers between every adjacent half oil duct.Half oil duct 1 is for being arranged on the stay chain 5 between adjacent layer curved portions winding, and stay chain 5 comprises one or more banded and spaced stay 6, and the two ends of stay 6 are bonded in respectively the described stay chain of formation on two adhesive tapes 7.Stay 6 is equidistantly arranged, and spacing is 18～22 millimeters, and the width of stay 6 is 8 millimeters, and thickness is 2 millimeters, and adhesive tape 7 width are 10 millimeters.
And full oil duct of the prior art is set to three half oil ducts, and half oil duct 1 is arranged on the curved portions 2 at the major axis two ends of coil, and half oil duct is stay chain structure, and spaced stay 6 is bonded in adhesive tape 7.Because the permeability of transformer oil is fine, little oil duct also can reach good convection current.Because the increase of oil duct quantity, strengthens heat conducting ability greatly, the temperature rise of winding hottest point is effectively improved, so the whole temperature rise of winding has reduced.Adopt corrugated board and stay curtain oil duct, the cardboard in oil duct has played certain iris action to radiating surface.Stay chain has been eliminated this obstruct, thereby has strengthened the useful effect of radiating surface.The width dimensions of stay 6 is 8 millimeters, and interval centre-to-centre spacing is 18～22 millimeters, is to guarantee that the unobstructed stay that do not cause again of oil duct occupies the optimum size that too much covers radiating surface.
Claims (4)
1. an oil immersion-type distribution transformer coil, comprise the winding being wound on iron core, between adjacent layer winding, be provided with insulating paper, the winding that is positioned at the two ends of coil long axis direction is curved portions, the winding that is positioned at the two ends of coil short-axis direction is straight shape portion, it is characterized in that: the curved portions that is positioned at coil two ends is provided with respectively 3 road half oil ducts.
2. a kind of oil immersion-type distribution transformer coil according to claim 1, it is characterized in that: half described oil duct is the stay chain being arranged between adjacent layer curved portions winding, stay chain comprises one or more banded and spaced stay, and the two ends of stay are bonded in respectively the described stay chain of formation on two adhesive tapes.
3. a kind of oil immersion-type distribution transformer coil according to claim 2, is characterized in that: interval 1/4th winding layers numbers between every adjacent half oil duct, and half oil duct at coil two ends is symmetrical arranged.
4. a kind of oil immersion-type distribution transformer coil according to claim 3, is characterized in that: described stay is equidistantly arranged, and spacing is 18～22 millimeters, and the width of stay is 8 millimeters, and thickness is 2 millimeters, and adhesive tape width is 10 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320506636.4U CN203397859U (en) | 2013-08-19 | 2013-08-19 | Oil-immersed power distribution transformer coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320506636.4U CN203397859U (en) | 2013-08-19 | 2013-08-19 | Oil-immersed power distribution transformer coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203397859U true CN203397859U (en) | 2014-01-15 |
Family
ID=49909373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320506636.4U Expired - Fee Related CN203397859U (en) | 2013-08-19 | 2013-08-19 | Oil-immersed power distribution transformer coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203397859U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895331A (en) * | 2015-01-06 | 2016-08-24 | 鹤壁人民黎源电气有限公司 | Oval transformer coil |
| CN107749338A (en) * | 2017-11-02 | 2018-03-02 | 江苏中天伯乐达变压器有限公司 | A kind of high overload oil-filled transformer |
| CN113284718A (en) * | 2021-05-19 | 2021-08-20 | 云南电网有限责任公司电力科学研究院 | Long-circle transformer winding and method for checking short-circuit-resistant bearing capacity thereof |
-
2013
- 2013-08-19 CN CN201320506636.4U patent/CN203397859U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895331A (en) * | 2015-01-06 | 2016-08-24 | 鹤壁人民黎源电气有限公司 | Oval transformer coil |
| CN107749338A (en) * | 2017-11-02 | 2018-03-02 | 江苏中天伯乐达变压器有限公司 | A kind of high overload oil-filled transformer |
| CN113284718A (en) * | 2021-05-19 | 2021-08-20 | 云南电网有限责任公司电力科学研究院 | Long-circle transformer winding and method for checking short-circuit-resistant bearing capacity thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20190819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |