CN203706823U - Winding structure of oil-immersed transformer - Google Patents
Winding structure of oil-immersed transformer Download PDFInfo
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- CN203706823U CN203706823U CN201420109492.3U CN201420109492U CN203706823U CN 203706823 U CN203706823 U CN 203706823U CN 201420109492 U CN201420109492 U CN 201420109492U CN 203706823 U CN203706823 U CN 203706823U
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- winding
- low pressure
- pressure winding
- oil
- voltage winding
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Abstract
The utility model provides awinding structure of an oil-immersed transformer, belongs to the technical field of transformers, and solves technical problems that inner low-voltage windings move, sizes of gaps between the inner low-voltage windings and outer low-voltage windings are changed and the like due to the fact that the inner low-voltage windings can be collided with iron cores during transportation and installation of existing oil-immersed transformers. The winding structure of the oil-immersed transformer comprises a high-voltage winding and a low-voltage winding, wherein the low-voltage winding comprises an inner low-voltage winding and an outer low-voltage winding; a piece of insulation paper I and a plurality of supporting strips fixed on the insulation paper I at equal intervals are arranged between the inner low-voltage winding and the outer low-voltage winding, the supporting strips are circumferentially distributed between the inner low-voltage winding and the outer low-voltage winding and proppedagainst the inner circumferential surface of the outer low-voltage winding, lengths of the supporting strips are identical to heights of the inner low-voltage winding and the outer low-voltage winding, and oil ducts distributed in the height direction of the inner low-voltage winding are formed between the adjacent supporting strips. The winding structure has the advantage of capability of ensuring the normal operation of the transformer.
Description
Technical field
The utility model belongs to transformer technology field, relates to the winding construction of a kind of oil-filled transformer, particularly a kind of oil-filled transformer.
Background technology
Transformer is to utilize the principle of electromagnetic induction to change the device of alternating voltage, and major function has: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilizing (magnetic saturation transformer) etc.Can be divided into by purposes: distribution transformer, power transformer, full-sealed transformer, combined transformer, dry-type transformer, oil-filled transformer, single-phase transformer, furnace transformer, rectifier transformer etc.
Oil-filled transformer is applicable to electric power system, industrial and mining enterprises, traffic, postal and telecommunication entities, R&D institution etc., and various high voltage electric equipments, electric elements, insulating material are carried out to the dielectric(al) test under power frequency or high direct voltage.The low pressure winding of oil-filled transformer on iron core, high pressure winding outside, this coaxially arranged leakage flux that reduced, thereby increased the coupling between winding.Due to the direct wound core of interior low pressure winding, therefore in the time of transport and installation, may cause interior low pressure winding displacement with iron core collision, change the gap length between interior low pressure winding and outer low pressure winding, cause the amount of the cold oil that flows through gap location not identical, cause interior low pressure winding and the outer low pressure winding inhomogeneous cooling of diverse location even, in serious situation, there will be interior low pressure winding and outer low pressure winding almost to fit, cold oil cannot enter the situation that causes excess Temperature.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of winding construction of oil-filled transformer, and the technical problem that the utility model solves is to make the even cooling winding of cold oil energy.
The purpose of this utility model can realize by following technical proposal: a kind of winding construction of oil-filled transformer, this winding construction comprises high pressure winding and low pressure winding, described high pressure winding is positioned at the periphery of low pressure winding, it is characterized in that, described low pressure winding comprises interior low pressure winding and outer low pressure winding, between described interior low pressure winding and outer low pressure winding, be provided with insulating paper one and be equidistantly fixed on some stays on insulating paper one, described insulating paper one is wrapped on the outer peripheral face of interior low pressure winding, described stay is circumferentially distributed between interior low pressure winding and outer low pressure winding, the inner peripheral surface of described stay and outer low pressure winding against, the length of described stay is identical with the height of interior low pressure winding and outer low pressure winding, between adjacent described stay, form the oil duct one distributing along interior low pressure winding short transverse.
Stay makes to remain fixing gap between low pressure winding and outer low pressure winding, the amount that flows through the cold oil of oil duct one remains even, make temperature between low pressure winding and outer low pressure winding evenly, avoid occurring the situation of localized hyperthermia, ensured the normal operation of transformer; Insulating paper one plays the effect of insulation, the first even fixed insulation paper one of stay simultaneously, then be installed between low pressure winding and outer low pressure winding by insulating paper one, make easy for installation.
In the winding construction of above-mentioned oil-filled transformer, described high pressure winding comprises outer high pressure winding and inner high voltage winding, between described outer high pressure winding and inner high voltage winding, be provided with space bar one, the cross section undulate of described space bar one, crest on described space bar one and trough respectively with the inner peripheral surface of outer high pressure winding and the outer peripheral face of inner high voltage winding against, on described space bar one, between adjacent peaks and adjacent trough, all form the oil duct two distributing along inner high voltage winding short transverse.Cold oil is taken away the heat of inside and outside high pressure winding and the generation of inner high voltage winding by oil duct two, and corrugated space bar one has certain anti-extrusion ability, ensures the unimpeded of oil duct two.
In the winding construction of above-mentioned oil-filled transformer, described inner high voltage winding is adjacent with outer low pressure winding and be positioned at the periphery of outer low pressure winding, between described inner high voltage winding and outer low pressure winding, be provided with space bar two, the cross section undulate of described space bar two, crest on described space bar two and trough respectively with the inner peripheral surface of inner high voltage winding and the outer peripheral face of outer low pressure winding against, on described space bar two, between adjacent peaks and adjacent trough, all form the oil duct three distributing along inner high voltage winding short transverse.Cold oil is taken away the heat of inner high voltage winding and the generation of outer low pressure winding by oil duct three, and corrugated space bar two has certain anti-extrusion ability, ensures the unimpeded of oil duct three.
In the winding construction of above-mentioned oil-filled transformer, the outer peripheral face of described space bar one and inner high voltage winding against trough between be fixed with insulating paper two, described insulating paper two is wrapped on the outer peripheral face of inner high voltage winding.By insulating paper two, space bar one is fixed between inner high voltage winding and outer high pressure winding.
In the winding construction of above-mentioned oil-filled transformer, the outer peripheral face of described space bar two and outer low pressure winding against trough between be fixed with insulating paper three, described insulating paper three is wrapped in the outer peripheral face of outer low pressure winding.By insulating paper three, space bar two is fixed between outer low pressure winding and inner high voltage winding.
In the winding construction of above-mentioned oil-filled transformer, described insulating paper one, insulating paper two and insulating paper three are a gummed paper.Time point gummed paper is installed and is fitted on winding by the installation extruding force between winding, winding can generate heat and make the glue of invocation point gummed paper have viscosity in use, simultaneously because the existence of extruding force is fixed on a gummed paper on corresponding winding.
In the winding construction of above-mentioned oil-filled transformer, described stay adopts the wooden one-tenth of lamination.Lamination wood has good crushing resistance, can ensure the unimpeded of oil duct one, and lamination wood is insulating material simultaneously, has therefore also played insulating effect.
In the winding construction of above-mentioned oil-filled transformer, the middle part of described stay has breach, and described breach is communicated with adjacent oil duct one.Cold oil in adjacent oil duct one can circulate mutually by breach, has increased the circulation of cold oil, has accelerated between different temperatures the exchange heat in oil duct one between cold oil, has improved the cooling-down effect of cold oil.
Compared with prior art, the winding construction of this oil-filled transformer have make temperature between low pressure winding and outer low pressure winding evenly, avoid occurring the situation of localized hyperthermia, ensured the advantage of the normal operation of transformer.
Brief description of the drawings
Fig. 1 is the plan structure schematic diagram of this winding construction.
Fig. 2 is the plan structure schematic diagram of insulating paper one and stay in this winding construction.
Fig. 3 is the side-looking structural representation of insulating paper one and stay in this winding construction.
In figure, 1, interior low pressure winding; 11, outer low pressure winding; 2, insulating paper one; 21, stay; 211, breach; 212, oil duct one; 3, outer high pressure winding; 31, inner high voltage winding; 32, space bar one; 321, oil duct two; 33, space bar two; 331, oil duct three.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
A kind of winding construction of oil-filled transformer, as shown in Figure 1 to Figure 3, this winding construction comprises high pressure winding and low pressure winding, high pressure winding is positioned at the periphery of low pressure winding, low pressure winding comprises interior low pressure winding 1 and outer low pressure winding 11, between interior low pressure winding 1 and outer low pressure winding 11, be provided with insulating paper 1 and be equidistantly fixed on some stays 21 on insulating paper 1, stay 21 adopts the wooden one-tenth of lamination, insulating paper 1 is wrapped on the outer peripheral face of interior low pressure winding 1, stay 21 is circumferentially distributed between interior low pressure winding 1 and outer low pressure winding 11, the inner peripheral surface of stay 21 and outer low pressure winding 11 against, the length of stay 21 is identical with the height of interior low pressure winding 1 and outer low pressure winding 11, between adjacent stay 21, form the oil duct 1 distributing along interior low pressure winding 1 short transverse, the middle part of stay 21 has breach 211, breach 211 is communicated with adjacent oil duct 1.
As shown in Figure 1, high pressure winding comprises outer high pressure winding 3 and inner high voltage winding 31, between outer high pressure winding 3 and inner high voltage winding 31, be provided with space bar 1, the cross section undulate of space bar 1, crest on space bar 1 and trough respectively with the inner peripheral surface of outer high pressure winding 3 and the outer peripheral face of inner high voltage winding 31 against, on space bar 1, between adjacent peaks and adjacent trough, all form the oil duct 2 321 distributing along inner high voltage winding 31 short transverses.The heat that cold oil produces inside and outside high pressure winding 3 and inner high voltage winding 31 by oil duct 2 321 is taken away, and corrugated space bar 1 has certain anti-extrusion ability, ensures the unimpeded of oil duct 2 321.
As shown in Figure 1, inner high voltage winding 31 is adjacent with outer low pressure winding 11 and be positioned at the periphery of outer low pressure winding 11, between inner high voltage winding 31 and outer low pressure winding 11, be provided with space bar 2 33, the cross section undulate of space bar 2 33, crest on space bar 2 33 and trough respectively with the inner peripheral surface of inner high voltage winding 31 and the outer peripheral face of outer low pressure winding 11 against, on space bar 2 33, between adjacent peaks and adjacent trough, all form the oil duct 3 331 distributing along inner high voltage winding 31 short transverses.The heat that cold oil produces inner high voltage winding 31 and outer low pressure winding 11 by oil duct 3 331 is taken away, and corrugated space bar 2 33 has certain anti-extrusion ability, ensures the unimpeded of oil duct 3 331.
The outer peripheral face of space bar 1 and inner high voltage winding 31 against trough between be fixed with insulating paper two, insulating paper two is wrapped on the outer peripheral face of inner high voltage winding 31, by insulating paper two, space bar 1 is fixed between inner high voltage winding 31 and outer high pressure winding 3.The outer peripheral face of space bar 2 33 and outer low pressure winding 11 against trough between be fixed with insulating paper three, described insulating paper three is wrapped in the outer peripheral face of outer low pressure winding 11, by insulating paper three, space bar 2 33 is fixed between outer low pressure winding 11 and inner high voltage winding 31.Insulating paper 1, insulating paper two and insulating paper three are a gummed paper.Time point gummed paper is installed and is fitted on winding by the installation extruding force between winding, winding can generate heat and make the glue of invocation point gummed paper have viscosity in use, simultaneously because the existence of extruding force is fixed on a gummed paper on corresponding winding.
Stay 21 makes to remain fixing gap between low pressure winding and outer low pressure winding 11, the amount that flows through the cold oil of oil duct 1 remains even, make temperature between low pressure winding and outer low pressure winding 11 evenly, avoid occurring the situation of localized hyperthermia, ensured the normal operation of transformer; Insulating paper 1 plays the effect of insulation, the first even fixed insulation paper 1 of stay 21 simultaneously, then be installed between low pressure winding and outer low pressure winding 11 by insulating paper 1, make easy for installation.Cold oil in adjacent oil duct 1 can circulate mutually by breach 211, has increased the circulation of cold oil, has accelerated between different temperatures the exchange heat in oil duct 1 between cold oil, has improved the cooling-down effect of cold oil.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used interior low pressure winding 1 herein; Outer low pressure winding 11; Insulating paper 1; Stay 21; Breach 211; Oil duct 1; Outer high pressure winding 3; Inner high voltage winding 31; Space bar 1; Oil duct 2 321; Space bar 2 33; Oil duct 3 331 terms such as grade, but do not get rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (8)
1. the winding construction of an oil-filled transformer, this winding construction comprises high pressure winding and low pressure winding, described high pressure winding is positioned at the periphery of low pressure winding, it is characterized in that, described low pressure winding comprises interior low pressure winding (1) and outer low pressure winding (11), between described interior low pressure winding (1) and outer low pressure winding (11), be provided with insulating paper one (2) and be equidistantly fixed on the upper some stays (21) of insulating paper one (2), described insulating paper one (2) is wrapped on the outer peripheral face of interior low pressure winding (1), described stay (21) is circumferentially distributed between interior low pressure winding (1) and outer low pressure winding (11), the inner peripheral surface of described stay (21) and outer low pressure winding (11) against, the length of described stay (21) is identical with the height of interior low pressure winding (1) and outer low pressure winding (11), between adjacent described stay (21), form the oil duct one (212) distributing along interior low pressure winding (1) short transverse.
2. the winding construction of oil-filled transformer according to claim 1, it is characterized in that, described high pressure winding comprises outer high pressure winding (3) and inner high voltage winding (31), between described outer high pressure winding (3) and inner high voltage winding (31), be provided with space bar one (32), the cross section undulate of described space bar one (32), crest on described space bar one (32) and trough respectively with the inner peripheral surface of outer high pressure winding (3) and the outer peripheral face of inner high voltage winding (31) against, between described space bar one (32) upper adjacent peaks and adjacent trough, all form the oil duct two (321) distributing along inner high voltage winding (31) short transverse.
3. the winding construction of oil-filled transformer according to claim 2, it is characterized in that, described inner high voltage winding (31) is adjacent with outer low pressure winding (11) and be positioned at the periphery of outer low pressure winding (11), between described inner high voltage winding (31) and outer low pressure winding (11), be provided with space bar two (33), the cross section undulate of described space bar two (33), crest on described space bar two (33) and trough respectively with the inner peripheral surface of inner high voltage winding (31) and the outer peripheral face of outer low pressure winding (11) against, between described space bar two (33) upper adjacent peaks and adjacent trough, all form the oil duct three (331) distributing along inner high voltage winding (31) short transverse.
4. the winding construction of oil-filled transformer according to claim 3, it is characterized in that, the outer peripheral face of described space bar one (32) and inner high voltage winding (31) against trough between be fixed with insulating paper two, described insulating paper two is wrapped on the outer peripheral face of inner high voltage winding (31).
5. the winding construction of oil-filled transformer according to claim 4, it is characterized in that, the outer peripheral face of described space bar two (33) and outer low pressure winding (11) against trough between be fixed with insulating paper three, described insulating paper three is wrapped in the outer peripheral face of outer low pressure winding (11).
6. the winding construction of oil-filled transformer according to claim 5, is characterized in that, described insulating paper one (2), insulating paper two and insulating paper three are a gummed paper.
7. according to the winding construction of the oil-filled transformer described in any one in claim 1 to 6, it is characterized in that, described stay (21) adopts the wooden one-tenth of lamination.
8. according to the winding construction of the oil-filled transformer described in any one in claim 1 to 6, it is characterized in that, the middle part of described stay (21) has breach (211), and described breach (211) is communicated with adjacent oil duct one (212).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109492.3U CN203706823U (en) | 2014-03-11 | 2014-03-11 | Winding structure of oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109492.3U CN203706823U (en) | 2014-03-11 | 2014-03-11 | Winding structure of oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203706823U true CN203706823U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420109492.3U Expired - Fee Related CN203706823U (en) | 2014-03-11 | 2014-03-11 | Winding structure of oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203706823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777406A (en) * | 2015-02-15 | 2015-07-15 | 广东电网有限责任公司电力科学研究院 | Model coil of interturn insulation test of oil-immersed power transformer and manufacturing method of model coil |
-
2014
- 2014-03-11 CN CN201420109492.3U patent/CN203706823U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777406A (en) * | 2015-02-15 | 2015-07-15 | 广东电网有限责任公司电力科学研究院 | Model coil of interturn insulation test of oil-immersed power transformer and manufacturing method of model coil |
| CN104777406B (en) * | 2015-02-15 | 2017-06-16 | 广东电网有限责任公司电力科学研究院 | Oil-immersed power transformer turn to turn test model coil and preparation method 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20210311 |