CN202373424U - Novel low-voltage winding of energy-saving and environmental-friendly oil immersed transformer - Google Patents
Novel low-voltage winding of energy-saving and environmental-friendly oil immersed transformer Download PDFInfo
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- CN202373424U CN202373424U CN2011205473569U CN201120547356U CN202373424U CN 202373424 U CN202373424 U CN 202373424U CN 2011205473569 U CN2011205473569 U CN 2011205473569U CN 201120547356 U CN201120547356 U CN 201120547356U CN 202373424 U CN202373424 U CN 202373424U
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Abstract
The utility model discloses a novel low-voltage winding of an energy-saving and environmental-friendly oil immersed transformer. The novel low-voltage winding of the energy-saving and environmental-friendly oil immersed transformer is characterized in that the low-voltage winding comprises aluminum foils and interlaminated insulation papers, wherein the aluminum foils and the interlaminated insulation papers are wound to be a laminated cylinder at intervals; oil duct structures are arranged between laminated layers of the cylinder; and each oil duct structure comprises supporting bar joins between the laminated layer of the cylinder, each supporting bar join is provided with multiple supporting bars which are uniformly distributed along the circumference direction of the aluminum foils, and a gap for oil passing is arranged between two adjacent supporting bars. By the adoption of the technical scheme, the novel low-voltage winding of the energy-saving and environmental-friendly oil immersed transformer disclosed by the utility model, has the beneficial effects that the low-voltage winding is unlike a copper wire winding which has a helical angle since the laminated cylinder is wound by the aluminum foils and the interlaminated insulation papers at intervals; after the winding is arranged on an iron core, the supporting forces on the winding of a supporting plate are all pointed to the circle center on the whole cross section, the resultant force balance is facilitated to realize, and the influence of the winding shape is reduced.
Description
Technical field
The utility model relates to the oil-immersed power transformer technical field, relates in particular to novel energy-saving environment-friendly oil-immersed type transformer low pressure winding.
Background technology
Mostly S series oil-immersed power transformer is oval winding at present, and winding is immersed in the oil, and oil is as dielectric and cooling media, and the type of cooling is self cooling.Compare with dry-type transformer, though its temperature resistant grade is low, fire protecting performance is poor, is difficult for carrying,, its capacity is big, and load is big, and is reliable and stable, and price is low, so still obtained using widely.
The winding of S series oil-immersed power transformer adopts copper cash coiled oval cylinder structure usually; And iron core adopts the cross section of approximate ellipsoidal; Low pressure winding and high pressure winding technique are integral directly and are sleeved on the iron core column, thereby form the core texture of oil-immersed power transformer.Along with the continuous increase of net capacity, the power transformer anti-short circuit capability has become an outstanding problem.Because the existence of leakage flux in the coil; Current carrying conductor receives very big electrodynamic impact under the heavy current effect; Particularly electric power is maximum when the coil suddenly-applied short circuit; Big tens times during than normal operation, in addition more, and the axial force parallel port diametral force that causes thus can cause serious destruction to transformer.If the winding ampere-turn can cause the winding anti-short circuit capability to reduce when uneven; And the structure of winding and shape are to influence the unbalanced major reason of ampere-turn; The copper cash winding has helical angle on the one hand; On the other hand, after winding was installed in iron core, iron core also can be to the form generation influence of winding to the imbalance of winding support force.Above-mentioned reason greatly reduces the anti-short circuit capability of oil-immersed power transformer.
In addition, the current market prices of raw and semifnished materials go up, and copper material is more expensive, cause product cost to increase, and have increased very big difficulty to enterprise.And China's copper resource shortage if too rely on copper material, certainly will influence the sound development of China's transformer industry.
The utility model content
The utility model technical problem to be solved is: a kind of novel energy-saving environment-friendly oil-immersed type transformer low pressure winding is provided, with the anti-short circuit capability of raising transformer, and effectively reduces production costs.
For solving the problems of the technologies described above; The technical scheme of the utility model is: a kind of novel energy-saving environment-friendly oil-immersed type transformer low pressure winding; It is characterized in that: said low pressure winding comprises aluminium foil and layer insulation paper, the alternate stratiform cylinder that is wound into layer insulation paper of said aluminium foil.
Interlayer at said cylinder is provided with oil channel structure.
Said oil channel structure comprises that the stay of the interlayer that is arranged on said cylinder joins, and said stay couplet is provided with a plurality of stays that are uniformly distributed with along the circumferencial direction of aluminium foil, has the slit of logical oil between two adjacent stays.
Said oil channel structure has one, is arranged at the l/2 place of the number of turn of said cylinder.
After having adopted technique scheme; The beneficial effect of the utility model is: because the low pressure winding is by aluminium foil and layer insulation paper questionnaire coiled multi-layer cylinder structure mutually, thereby it equally has helical angle unlike the copper cash winding, and after winding is installed on the iron core; On entire cross section; Fagging all points to the center of circle to the support force of winding, helps realizing the balance of making a concerted effort, and has reduced the influence to the winding shape.The utility model is unfavorable for the factor of ampere-turn equilibrium through elimination, has improved the anti-short circuit capability of power transformer greatly.On the other hand, China's bauxite resource is abundant, and the utility model is applied to aluminium foil the winding of oil-immersed power transformer; Not only can improve the coiling quality, improve coiling efficient, reduce production costs; And to keeping continuing, developing in a healthy way of China's transformer industry, also significant.
Because the interlayer at said cylinder is provided with oil channel structure, thereby can cool off winding from interlayer through the mode of recycle oil, has improved cooling effect greatly.
Description of drawings
Figure l is the structural representation of the utility model embodiment.
Fig. 2 is the vertical view of figure l.
Embodiment
As scheme l and shown in Figure 2, and a kind of novel energy-saving environment-friendly oil-immersed type transformer low pressure winding is asked insulating paper questionnaire coiled stratiform cylinder 100 mutually with aluminium foil with layer, high pressure winding (not shown) is reeled by copper cash and is formed, and is arranged on the outside of low pressure winding with one heart.Interlayer at said cylinder is provided with oil channel structure, and said oil channel structure has one, preferentially is arranged at the l/2 place of the number of turn of said cylinder.After in oil channel structure, feeding recycle oil, can cool off winding from interlayer, from this kind purpose, oil channel structure is not limited to one.The utility model has disclosed a concrete oil channel structure in detail; It comprises that the stay of the interlayer that is arranged on said cylinder 100 joins; Said stay couplet is provided with a plurality of stays 102 that are uniformly distributed with along the circumferencial direction of aluminium foil, has the slit of logical oil between two adjacent stays 102.
In addition, two overhang insulation circles 101 respectively by the overhang insulation paper roll of two band shapes around forming, and be arranged on two ends of Width of said aluminium foil, overhang insulation paper is used for aluminium foil is insulated with layer insulation paper.Two of this winding draw the electrode 104 that wiring uses and are welded in respectively on two ends, first end of said low pressure winding aluminium foil, and one is positioned at 100, one of cylinders and is positioned at outside the cylinder 100, and the cross section of said electrode 104 is a rectangle, preferably uses copper material.
This low pressure winding adopts the foil winding equipment manufacturing.At first an electrode 104 is welded on the head end of aluminium foil, is fixed in subsequently on the paper web 103, certainly, this paper web 103 also need adopt the corresponding insulation material.Be positioned on the aluminium foil layer insulation paper and alignment, overhang insulation paper be posted by on two ends of aluminium foil Width (being short transverse after being wound into tube).
The beginning coiling.When around the time to the l/2 number of turn, add stay and join, the length that stay joins can just guarantee around a circle, continues coiling.When around to the regulation the number of turn time, on the terminal part of aluminium foil the welding another electrode 104.So far, aluminium foil, layer insulation paper, overhang insulation paper and stay join just by integral body of coiled.And then around the high pressure winding, the winding that the utility model disclosed can strengthen the anti-short circuit capability of power transformer, improves coiling quality and efficient, reduces production costs.On the other hand, aluminium foil is applied to the winding of oil-immersed power transformer, can makes full use of the bauxite resource of China's abundant, to keeping continuing, developing in a healthy way of China's transformer industry, also significant.
Claims (4)
1. novel energy-saving environment-friendly oil-immersed type transformer low pressure winding, it is characterized in that: said low pressure winding comprises aluminium foil and layer insulation paper, the alternate stratiform cylinder that is wound into layer insulation paper of said aluminium foil.
2. according to the described novel energy-saving environment-friendly oil-immersed type transformer of claim l low pressure winding, it is characterized in that: the interlayer at said cylinder is provided with oil channel structure.
3. novel energy-saving environment-friendly oil-immersed type transformer low pressure winding according to claim 2; It is characterized in that: said oil channel structure comprises that the stay of the interlayer that is arranged on said cylinder joins; Said stay couplet is provided with a plurality of stays that are uniformly distributed with along the circumferencial direction of aluminium foil, has the slit of logical oil between two adjacent stays.
4. novel energy-saving environment-friendly oil-immersed type transformer low pressure winding according to claim 2, it is characterized in that: said oil channel structure has one, is arranged at the l/2 place of the number of turn of said cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205473569U CN202373424U (en) | 2011-12-24 | 2011-12-24 | Novel low-voltage winding of energy-saving and environmental-friendly oil immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205473569U CN202373424U (en) | 2011-12-24 | 2011-12-24 | Novel low-voltage winding of energy-saving and environmental-friendly oil immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202373424U true CN202373424U (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205473569U Expired - Fee Related CN202373424U (en) | 2011-12-24 | 2011-12-24 | Novel low-voltage winding of energy-saving and environmental-friendly oil immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202373424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987054A (en) * | 2018-07-18 | 2018-12-11 | 江苏恒屹变压器有限公司 | A kind of oil-immersed power transformer |
-
2011
- 2011-12-24 CN CN2011205473569U patent/CN202373424U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987054A (en) * | 2018-07-18 | 2018-12-11 | 江苏恒屹变压器有限公司 | A kind of oil-immersed power transformer |
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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: 20120808 Termination date: 20181224 |