CN204332632U - A kind of low-voltage winding structure of transformer - Google Patents
A kind of low-voltage winding structure of transformer Download PDFInfo
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- CN204332632U CN204332632U CN201520020270.9U CN201520020270U CN204332632U CN 204332632 U CN204332632 U CN 204332632U CN 201520020270 U CN201520020270 U CN 201520020270U CN 204332632 U CN204332632 U CN 204332632U
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Abstract
The utility model discloses a kind of low-voltage winding structure of transformer, comprise equal turn numbers and be low pressure winding one and the low pressure winding two of line formula winding, described low pressure winding one and low pressure winding two are with coaxial radius, parallel synchronous coiling, all isolate with insulating material between adjacent coiling with layer, between adjacent layer, be provided with interlayer insulating film; Described low pressure winding one and low pressure winding two have the electric part of independent operating.Structure is simple, it is easy, safe and reliable, practical to make, the axial split structure changing traditional Foil winding or line formula winding is the line formula winding parallel synchronous winding method through optimizing, realizing high and low pressure winding does not all need by traditional upper and lower axial split form, reduce the technique for coiling difficulty of high pressure winding, not only omit the electrical safety distance between upper and lower winding, and the window high altitude of iron core can be reduced, the materials cost of direct reduction transformer core, manufacturing cost is lower, remarkable in economical benefits.
Description
Technical field
The utility model relates to a kind of low-voltage winding structure of transformer, specifically relates to the inside winding structure of low voltage winding in transformers, belongs to transformer coil winding technical field.
Background technology
Along with the develop rapidly of photovoltaic industry, photovoltaic effect can have been utilized at present to make sunlight be mapped to the generation current direct generation of electricity on silicon materials, then by photovoltaic transformer, inverter etc. by electric energy network, thus realize solar energy for the people used.
Under the major premise that photovoltaic industry unit device assembly is constantly changed, developed into current actual gain higher be the most common with 1MW unit, comprising two groups of inverter systems, namely often group is 500kVA, also just requires that every 1MW unit need be equipped with the transformer of 2 500kVA.
According to transformer principle, as by two transformer integrators, and the transformer forming a Split type effectively can reduce the cost of transformer element.But, traditional axial split transformer as shown in Figure 1, comprise iron core 10, successively around the low pressure winding outside iron core 10 and high pressure winding, in order to keep the electrical safety distance between winding, division winding is generally upper and lower split form, so low pressure winding and high voltage winding group comprise low pressure winding 11 and lower low pressure winding 12, upper high pressure winding 13 and lower high pressure winding 14 respectively, its often organize up and down between middle part insulating material separate safe distance 15, the transformer bundle factor of this structure is comparatively large, and electrical structure safely, reliably; But its axial dimension will increase than the transformer with capacity, increase nearly 5% by directly causing transformer cost than the transformer with capacity.
Synthesize one still need to carry out technological improvement so carry out two transformers according to traditional axial split transformer, how the structure of photovoltaic transformer being optimized, reducing transformer manufacturing cost is problem demanding prompt solution.
Utility model content
Main purpose of the present utility model is, overcomes deficiency of the prior art, provides a kind of low-voltage winding structure of transformer of new structure, is specially adapted to photovoltaic transformer.
It is simple that technical problem to be solved in the utility model is to provide structure, make easily, safe and reliable, practical low-voltage winding structure of transformer, the axial split structure changing traditional Foil winding or line formula winding is the line formula winding parallel synchronous winding method through optimizing, realize high, low pressure winding does not all need by traditional upper, lower axial split form, on not only omitting, electrical safety distance between lower winding, and the window high altitude of iron core can be reduced, the materials cost of direct reduction transformer core, manufacturing cost is lower, remarkable in economical benefits, has the value in industry.
In order to achieve the above object, the technical scheme that the utility model adopts is:
A kind of low-voltage winding structure of transformer, comprise equal turn numbers and be low pressure winding one and the low pressure winding two of line formula winding, described low pressure winding one and low pressure winding two are with coaxial radius, parallel synchronous coiling, all isolate with insulating material between adjacent coiling with layer, between adjacent layer, be provided with interlayer insulating film; Described low pressure winding one and low pressure winding two have the electric part of independent operating.
The utility model is set to further: described low pressure winding one and low pressure winding two are copper cash or aluminum steel winding.
The utility model is set to further: described low pressure winding one and low pressure winding two have equal reactance height, and lead-in wire can be drawn or offside extraction by homonymy.
The utility model is set to further: the electric pressure of described low pressure winding one and low pressure winding two is below 1000V.
The utility model is set to further: the adjacent coiling of same layer is isolated the insulation distance of 3mm ~ 5mm by described insulating material.
The utility model is set to further: described insulating material is insulated wire, with low pressure winding one and low pressure winding two in the lump with coaxial radius, parallel synchronous coiling.
The utility model is set to further: described interlayer insulating film is glass grid.
The utility model is set to further: described low pressure winding one and low pressure winding two parallel synchronous are wound on low pressure winding mould, carry out overall vacuum cast after completing coiling.
The utility model is set to further: the periphery of described low pressure winding one and low pressure winding two is wound with nondividing high pressure winding.
Compared with prior art, the beneficial effect that the utility model has is:
By change the axial split structure of traditional Foil winding or line formula winding be through optimization line formula winding parallel synchronous winding method, two low pressure windings of equal turn numbers are with coaxial radius, parallel synchronous coiling and have the electric part of independent operating, all isolate with insulating material between adjacent coiling wherein with layer, and between adjacent layer, be provided with interlayer insulating film; High and low pressure winding can be realized all do not need can meet transformer capacity requirement by traditional upper and lower axial split form, not only eliminate the electrical safety distance between upper and lower winding, and the window high altitude of iron core can be reduced, the materials cost of direct reduction transformer core, have structure simple, make the plurality of advantages such as easy, safe and reliable, cost is lower, practical, remarkable in economical benefits.
Foregoing is only the general introduction of technical solutions of the utility model, and in order to clearer understanding technological means of the present utility model, below in conjunction with accompanying drawing, the utility model will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional axial split transformer;
Fig. 2 is the structural representation of a kind of low-voltage winding structure of transformer of the utility model;
Fig. 3 is the winding structure schematic diagram of a kind of low-voltage winding structure of transformer mesolow of the utility model winding.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figures 2 and 3, a kind of low-voltage winding structure of transformer, comprise equal turn numbers and be low pressure winding 1 and the low pressure winding 22 of line formula winding, described low pressure winding 1 and low pressure winding 22 are with coaxial radius, parallel synchronous coiling, all isolate with insulating material 3 between adjacent coiling with layer, between adjacent layer, be provided with interlayer insulating film; Described low pressure winding 1 and low pressure winding 22 have the electric part of independent operating.
The adjacent coiling of same layer is isolated the insulation distance of 3mm ~ 5mm by described insulating material 3, and described insulating material 3 makes the insulated wire becoming line body shape, preferably with low pressure winding one and low pressure winding two in the lump with coaxial radius, parallel synchronous coiling.
During coiling, by all ready for two groups of low pressure wire rods such as copper cash electromagnetic wire, low pressure winding 1 and low pressure winding 22 are started, by the mode coiling of coaxial radius, parallel synchronous coiling on low pressure winding mould 4, placement insulating material 3 is carried out on request between adjacent coiling with layer, carry out continuous coiling, insert insulating radiation air flue plate between adjacent layers, and at the interlayer insulating film of the equal placing glass grid in the both sides of insulating radiation air flue plate and so on, and low pressure winding one go between 5 and low pressure winding two go between and 6 can to draw or offside is drawn by homonymy; Carry out overall vacuum cast again after completing coiling, the electromagnetic wire of two low pressure windings and insulating material etc. after the program curing of epoxy resin, then form an overall low pressure winding.The high pressure winding 7 corresponding with low pressure winding can take not split form coiling, and unification is assemblied in outside iron core 8, completes transformer make according to transformer technique.
Innovative point of the present utility model is, by change the axial split structure of traditional upper and lower division be through optimization line formula winding parallel synchronous winding method, synchronous adjustment high pressure winding also no longer adopts axial split structure, reduce the technique for coiling difficulty of high pressure winding, not only eliminate the electrical safety distance between upper and lower winding, and the window high altitude of iron core can be reduced, directly reduce the materials cost of transformer core, the window of its iron core is high can reduce more than 40mm; Simple and compact for structure, quality safety is reliable, cost is lower, economical and practical.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (9)
1. a low-voltage winding structure of transformer, it is characterized in that: comprise equal turn numbers and be low pressure winding one and the low pressure winding two of line formula winding, described low pressure winding one and low pressure winding two are with coaxial radius, parallel synchronous coiling, all isolate with insulating material between adjacent coiling with layer, between adjacent layer, be provided with interlayer insulating film; Described low pressure winding one and low pressure winding two have the electric part of independent operating.
2. a kind of low-voltage winding structure of transformer according to claim 1, is characterized in that: described low pressure winding one and low pressure winding two are copper cash or aluminum steel winding.
3. a kind of low-voltage winding structure of transformer according to claim 1, is characterized in that: described low pressure winding one and low pressure winding two have equal reactance height, and lead-in wire can be drawn or offside extraction by homonymy.
4. a kind of low-voltage winding structure of transformer according to claim 1, is characterized in that: the electric pressure of described low pressure winding one and low pressure winding two is below 1000V.
5. a kind of low-voltage winding structure of transformer according to claim 1, is characterized in that: the adjacent coiling of same layer is isolated the insulation distance of 3mm ~ 5mm by described insulating material.
6. a kind of low-voltage winding structure of transformer according to claim 1, is characterized in that: described insulating material is insulated wire, with low pressure winding one and low pressure winding two in the lump with coaxial radius, parallel synchronous coiling.
7. a kind of low-voltage winding structure of transformer according to claim 1, is characterized in that: described interlayer insulating film is glass grid.
8. a kind of low-voltage winding structure of transformer according to claim 1, is characterized in that: described low pressure winding one and low pressure winding two parallel synchronous are wound on low pressure winding mould, carry out overall vacuum cast after completing coiling.
9. a kind of low-voltage winding structure of transformer according to claim 1, is characterized in that: the periphery of described low pressure winding one and low pressure winding two is wound with nondividing high pressure winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520020270.9U CN204332632U (en) | 2015-01-12 | 2015-01-12 | A kind of low-voltage winding structure of transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520020270.9U CN204332632U (en) | 2015-01-12 | 2015-01-12 | A kind of low-voltage winding structure of transformer |
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| CN204332632U true CN204332632U (en) | 2015-05-13 |
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| CN201520020270.9U Active CN204332632U (en) | 2015-01-12 | 2015-01-12 | A kind of low-voltage winding structure of transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390269A (en) * | 2015-11-24 | 2016-03-09 | 宜兴市兴益特种变压器有限公司 | Dual-layer split-body simultaneous-winding foil winding machine |
| CN106205976A (en) * | 2016-07-01 | 2016-12-07 | 宁波奥克斯高科技有限公司 | Double division photovoltaic structure changes |
| CN115240961A (en) * | 2022-09-23 | 2022-10-25 | 上海电气集团(张家港)变压器有限公司 | Outgoing line structure of low-voltage winding of resin insulation dry type transformer and transformer |
-
2015
- 2015-01-12 CN CN201520020270.9U patent/CN204332632U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390269A (en) * | 2015-11-24 | 2016-03-09 | 宜兴市兴益特种变压器有限公司 | Dual-layer split-body simultaneous-winding foil winding machine |
| CN106205976A (en) * | 2016-07-01 | 2016-12-07 | 宁波奥克斯高科技有限公司 | Double division photovoltaic structure changes |
| CN115240961A (en) * | 2022-09-23 | 2022-10-25 | 上海电气集团(张家港)变压器有限公司 | Outgoing line structure of low-voltage winding of resin insulation dry type transformer and transformer |
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