CN201298427Y - Oil-filled transformer - Google Patents
Oil-filled transformer Download PDFInfo
- Publication number
- CN201298427Y CN201298427Y CNU2008200398216U CN200820039821U CN201298427Y CN 201298427 Y CN201298427 Y CN 201298427Y CN U2008200398216 U CNU2008200398216 U CN U2008200398216U CN 200820039821 U CN200820039821 U CN 200820039821U CN 201298427 Y CN201298427 Y CN 201298427Y
- Authority
- CN
- China
- Prior art keywords
- coil
- low
- oil
- stem
- iron core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000004804 winding Methods 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims description 11
- 239000002390 adhesive tape Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model relates to an oil-filled transformer, the transformer body of which comprises a circuit and a magnetic circuit; wherein, the circuit consists of two or a plurality of insulative windings with different number of turns; the magnetic circuit is a closed iron core; and the wingdings are sleeved on the iron core. The cross section of the iron core is in a middle rectangle and the relative two ends of the rectangle are in circular arc shape. The transformer has the advantages of high-usage for the structural space of the iron core, decreasing the dead time loss and lowering the transformer cost.
Description
Technical field
The utility model belongs to the transformer technology field, relates to a kind of oil-filled transformer of being made up of iron core and coil, is specially adapted to the oil-filled transformer of the big electric current of 630KVA～2500KVA.
Background technology
Conventional at present oil immersion-type distribution transformer all is made of the device body of transformer iron core, low-voltage coil, high-tension coil and insulating part.Wherein iron core is the basic module of transformer, is the magnetic circuit and the installation skeleton of transformer.Iron core is made up of stem stem, upper yoke and lower yoke, and its stem stem and yoke sheet are formed by stacking by high magnetic conduction grain orientation cold-reduced silicon sheet, and core section is a circular configuration.The transformer magnetic circuit of this core structure is long, and no-load loss is big, and the iron core space availability ratio is low, and structure is big.Also have the requirement of mechanical performance for transformer, when electric current flows through Transformer Winding, under the acting in conjunction of stray field and electric current, will produce electromotive force in winding conductor, electric current is big more, and this electromotive force is big more.Especially when the transformer suddenly-applied short circuit, suffer the effect of huge short circuit current.In addition, the useful life of transformer is also relevant with its mechanical strength.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of oil-filled transformer, and concrete technical scheme is as follows:
A kind of oil-filled transformer, the device body of this transformer comprises circuit and magnetic circuit; Described circuit is the different and windings insulated from each other of two or more numbers of turn; Described magnetic circuit is closed iron core; Winding is enclosed within on the iron core.The cross sectional shape of described iron core is an intermediate rectangular, and the rectangle opposite end is the shape of circular arc.
Described iron core comprises stem stem, upper yoke and lower yoke; Described stem stem has three, and upper and lower iron yoke is located at the upper/lower terminal of three stem stems.
Described winding comprises high-tension coil, low-voltage coil; Described low-voltage coil is enclosed within on the stem stem at interior, close stem stem; High-tension coil is outside low-voltage coil; Between the high and low pressure coil, insulate between low-voltage coil, the stem stem.
Described low-voltage coil adopts paper tinsel around mode.
Use the insulation of insulating point gummed paper between the inside of described high and low pressure coil and coil.The low-voltage coil outermost layer twines with half-dried no latitude glass adhesive tape.
High-tension coil is that circle line or lenticular wire coiling form, and structure is the multilayer laminar, and layer insulation is the insulating point gummed paper, and the high-tension coil outermost layer is with tightening the band winding.Consider the heat radiation requirement, in the high and low pressure coil oil duct can be set, oil duct is that many bracing bars are bonded at the stay curtain of forming on the gummed paper.Use the fagging stretching between low-voltage coil and the iron core, between high-tension coil and the low-voltage coil with the stay curtain to guarantee enough insulation distances.
The Long Circle paper tinsel that the utility model provides is around transformer, and core structure space availability ratio height can reduce no-load loss, reduces the transformer cost.Low-voltage coil is a paper tinsel around, the mechanical strength height of coil, and anti-short circuit capability is strong.Since coil inside and coil between used insulating point gummed paper and no latitude glass adhesive tape, coil can form a solid integral body after drying, and does not need dipping lacquer, thereby has improved the insulation property of coil, reduction office puts.
Description of drawings
Fig. 1 is the iron core schematic diagram
Fig. 2 is an iron core stem stem schematic cross-section, and iron yoke cross section is identical with it
Fig. 3 is the coil schematic diagram
High-tension coil 1, high-tension coil stay curtain 2, cardboard 3, stay curtain 4, low-voltage coil outlet row 5, low-voltage coil 6, low-voltage coil stay curtain 7, half-dried no latitude glass adhesive tape 8, tighten be with 9, fagging 10, insulating point gummed paper 11, iron core 12, stem stem 13, upper yoke 14, lower yoke 15
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Being used for three-phase transformer with the utility model is example, and the device body of this transformer comprises circuit and magnetic circuit; Described circuit is the different and winding insulated from each other of the number of turn; Described magnetic circuit is closed iron core; Winding is enclosed within on the iron core, and the cross sectional shape of described iron core is an intermediate rectangular, and the rectangle opposite end is the shape of circular arc, as Fig. 1.
Described iron core comprises stem stem, upper yoke and lower yoke; Stem stem has three, and upper and lower iron yoke is located at the upper/lower terminal of three stem stems, as Fig. 2.The winding of three-phase is respectively on three stem stems.
Described winding comprises high-tension coil, low-voltage coil; Described low-voltage coil is enclosed within on the stem stem at interior, close stem stem; High-tension coil is outside low-voltage coil; Between the high and low pressure coil, insulate between low-voltage coil, the stem stem, as Fig. 3.
Described low-voltage coil adopts paper tinsel around mode.
Use insulating point gummed paper and the insulation of no latitude glass adhesive tape between the inside of described high and low pressure coil and coil.
Described iron core is to be formed by stacking by high magnetic conduction grain orientation cold-reduced silicon sheet.This iron core has the advantage that magnetic circuit is short, space availability ratio is high, effectively reduces the weight of iron core simultaneously, has reduced the no-load loss and the no-load current of transformer, thereby has reduced the manufacturing cost of transformer.
Winding is made up of low-voltage coil and high-tension coil, the high and low pressure coil take to overlap around method, promptly wind low-voltage coil earlier, again coiling high-tension coil on low-voltage coil.Low-voltage coil be paper tinsel around, layer insulation is the insulating point gummed paper, the low-voltage coil outermost layer twines with half-dried no latitude glass adhesive tape.High-tension coil is that circle line or lenticular wire coiling form, and structure is the multilayer laminar, and layer insulation is the insulating point gummed paper, and the high-tension coil outermost layer is with tightening the band winding.In order to consider the requirement of dispelling the heat, in the high and low pressure coil oil duct can be set, oil duct is that many bracing bars are bonded at the stay curtain of forming on the gummed paper.Use the fagging stretching between low-voltage coil and the iron core, between high-tension coil and the low-voltage coil with the stay curtain to guarantee enough insulation distances.
Claims (8)
1, a kind of oil-filled transformer, this transformer comprises circuit and magnetic circuit; Described circuit is the different and windings insulated from each other of two or more numbers of turn; Described magnetic circuit is closed iron core; Winding is enclosed within on the iron core, and the cross sectional shape that it is characterized in that described iron core is an intermediate rectangular, and the rectangle opposite end is the shape of circular arc.
2, oil-filled transformer according to claim 1 is characterized in that described iron core comprises stem stem, upper yoke and lower yoke; Described stem stem has three, and upper and lower iron yoke is located at the upper/lower terminal of three stem stems.
3, oil-filled transformer according to claim 2 is characterized in that described winding comprises high-tension coil, low-voltage coil; Described low-voltage coil is enclosed within on the stem stem at interior, close stem stem; High-tension coil is outside low-voltage coil; Between the high and low pressure coil, insulate between low-voltage coil, the stem stem.
4, oil-filled transformer according to claim 3 is characterized in that described low-voltage coil adopts paper tinsel around mode.
5,, it is characterized in that using between the inside of described high and low pressure coil and coil the insulation of insulating point gummed paper according to claim 3 or 4 described oil-filled transformers; The low-voltage coil outermost layer twines with half-dried no latitude glass adhesive tape.
6, oil-filled transformer according to claim 5 is characterized in that high-tension coil is that circle line or lenticular wire coiling form, and structure is the multilayer laminar, and layer insulation is the insulating point gummed paper, and the high-tension coil outermost layer twines with tightening band.
7, oil-filled transformer according to claim 6 is characterized in that considering the heat radiation requirement, in the high and low pressure coil oil duct is set, and oil duct is that many bracing bars are bonded at the stay curtain of forming on the gummed paper.
8, oil-filled transformer according to claim 7 is characterized in that using the fagging stretching between low-voltage coil and the iron core, between high-tension coil and the low-voltage coil with the stay curtain to guarantee enough insulation distances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200398216U CN201298427Y (en) | 2008-06-30 | 2008-06-30 | Oil-filled transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200398216U CN201298427Y (en) | 2008-06-30 | 2008-06-30 | Oil-filled transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201298427Y true CN201298427Y (en) | 2009-08-26 |
Family
ID=41044414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200398216U Expired - Lifetime CN201298427Y (en) | 2008-06-30 | 2008-06-30 | Oil-filled transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201298427Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834057A (en) * | 2010-05-18 | 2010-09-15 | 苏州金山门变压器有限公司 | Oil-immersed on-load capacitance-adjustable transformer |
| CN102064012A (en) * | 2010-12-06 | 2011-05-18 | 保定天威集团有限公司 | Voltage transformer with low no-load loss |
| CN102576596A (en) * | 2009-09-11 | 2012-07-11 | Abb技术有限公司 | Disc wound transformer with improved cooling |
| CN103000354A (en) * | 2012-12-20 | 2013-03-27 | 江苏铭安电气有限公司 | Novel transformer |
| CN103531331A (en) * | 2013-10-12 | 2014-01-22 | 山东万通电力设备配套有限公司 | Oil-immersed transformer |
| CN108335870A (en) * | 2017-12-25 | 2018-07-27 | 中铁第勘察设计院集团有限公司 | The volume iron core tractive transformer coil and winding method of coiling of high-voltage coil and low-voltage coil |
| CN115331933A (en) * | 2022-08-30 | 2022-11-11 | 山东电工电气集团智能电气有限公司 | Amorphous alloy three-dimensional wound core transformer with high-voltage layer type coil structure |
-
2008
- 2008-06-30 CN CNU2008200398216U patent/CN201298427Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102576596A (en) * | 2009-09-11 | 2012-07-11 | Abb技术有限公司 | Disc wound transformer with improved cooling |
| CN101834057A (en) * | 2010-05-18 | 2010-09-15 | 苏州金山门变压器有限公司 | Oil-immersed on-load capacitance-adjustable transformer |
| CN102064012A (en) * | 2010-12-06 | 2011-05-18 | 保定天威集团有限公司 | Voltage transformer with low no-load loss |
| CN103000354A (en) * | 2012-12-20 | 2013-03-27 | 江苏铭安电气有限公司 | Novel transformer |
| CN103531331A (en) * | 2013-10-12 | 2014-01-22 | 山东万通电力设备配套有限公司 | Oil-immersed transformer |
| CN108335870A (en) * | 2017-12-25 | 2018-07-27 | 中铁第勘察设计院集团有限公司 | The volume iron core tractive transformer coil and winding method of coiling of high-voltage coil and low-voltage coil |
| CN115331933A (en) * | 2022-08-30 | 2022-11-11 | 山东电工电气集团智能电气有限公司 | Amorphous alloy three-dimensional wound core transformer with high-voltage layer type coil structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090826 |
|
| CX01 | Expiry of patent term |