CN204537842U - A kind of transformer low voltage winding single-screw transposition structure - Google Patents
A kind of transformer low voltage winding single-screw transposition structure Download PDFInfo
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- CN204537842U CN204537842U CN201520221333.7U CN201520221333U CN204537842U CN 204537842 U CN204537842 U CN 204537842U CN 201520221333 U CN201520221333 U CN 201520221333U CN 204537842 U CN204537842 U CN 204537842U
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Abstract
A kind of transformer low voltage winding single-screw transposition structure, internal coil diameter place divides equally and is provided with multiple stay, coil between every two stays is provided with a S shape transposition structure, each transposition structure place, wire completely evenly replaces, one, the top wire of line cake moves to the bottom of line cake, and the bottom wire of line cake moves to the top of line cake.It is uneven in the ampere-turn distribution of transposition that the utility model eliminates winding, thus make horizontal Leakage flux distribution even, coil axial dimension can be made to reduce by 3 conductor heights and 3 oil duct height, add wire filling rate, save copper conductor consumption, also reduce barred window height simultaneously, improve the economic benefit of transformer.
Description
Technical field
The utility model belongs to high-power transformer and manufactures field, is specifically related to a kind of transformer low voltage winding single-screw transposition structure.
Background technology
In high-power transformer low pressure Winding Design, circulation loss is that wire non-complete transposition causes.If wire is non-complete transposition, and the thickness of wire is comparatively large, and the circulation loss produced in the windings is also comparatively large, has had a strong impact on the performance index of transformer.Thus the key that circulation loss is this Transformer Winding design improvement how is reduced.
Single-screw winding configuration is widely used on low-voltage and high-current winding, and therefore the low pressure winding of transformer often selects single-screw winding configuration.In order to reduce the supplementary load loss of winding, Helical winding all will replace.Usually " a standard transposition ", " 2.1.2 transposition " and 4.2.4 transposition is selected ", these traditional interchanging methods just local make moderate progress, and can not effectively reduce eddy current loss, and highly also along with transposition increases, affect the performance index of transformer.
Utility model content
The utility model, for above shortcoming, carries out technological innovation to it further, provides the single-screw transposition structure of a kind of transformer low voltage winding, do not increase height, and make horizontal Leakage flux distribution even, reduce coil axial dimension, improve the object of transformer performance.
For achieving the above object, the utility model is taked following technical proposals to realize:
A kind of transformer low voltage winding single-screw transposition structure, internal coil diameter place divides equally and is provided with multiple stay, coil between every two stays is provided with a S shape transposition structure, each transposition structure place, wire completely evenly replaces, one, the top wire of line cake moves to the bottom of line cake, and the bottom wire of line cake moves to the top of line cake; Wire, in S shape transposition structure bending place, leaves the margin of safety of 10-15 degree from inside to outside, damages insulation when preventing solid conductor from bending at S place; The 60 millimeters of additional bag insulation of place's wire of online cake, prevent solid conductor in S crook and other wire short circuits.
Further, the thickness that the height of described S shape transposition structure place oil duct is not less than bag insulated conductor adds two millimeters.
Further, wire is composite conductor, and the solid conductor of composite conductor inside, transposition structure place is completely evenly transposition all, and ragged edge changed to by the line of composite conductor the inside, and the inside changed to by the line of ragged edge.
Further, the U-shaped cardboard of 0.5 millimeters thick is added between two wires of composite conductor in the bending place of S shape transposition structure; U-shaped cardboard wraps 60 millimeters from bending place; Two wires being provided with U-shaped cardboard add bag insulation outward together, and the thickness of insulation is the thickness of 6-10 solid conductor insulation doubly, takes above-mentioned measure can prevent short circuit between wire and wire.
In a word, the beneficial effects of the utility model are:
In the utility model, full transposition is evenly transposition, transposition number is that parallel conducting wire radical subtracts 1, in each transposition, line cake one, the top wire is moved to the bottom (completing transposition in a gear) of line cake, so not only do not increase height, and it is uneven in the ampere-turn distribution of transposition to eliminate winding, thus makes horizontal Leakage flux distribution even, make the corresponding minimizing of the supplementary load loss in winding wire, the circulation loss of the 4.2.4 transposition reduction about 80% that can replace than traditional 2.1.2; Coil axial dimension can be made to reduce by 3 conductor heights and 3 oil duct height simultaneously, add wire filling rate, saved copper conductor consumption, also reduce barred window height simultaneously; Reduce the cost of transformer, improve the service efficiency of transformer.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of transformer low voltage winding single-screw transposition structure in the utility model embodiment 1.
Fig. 2 be in Fig. 1 S shape transposition structure E to schematic diagram.
Fig. 3 is S shape transposition structure bag insulation schematic diagram in Fig. 1.
Fig. 4 is composite conductor internal single cable wire transposition schematic diagram in the utility model embodiment 2.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
Embodiment 1
Transformer low voltage winding single spiral coil is many lenticular wire parallel connections, all and around lenticular wire overlapping composition line cake, often to advance a line cake around a circle.Fig. 1 is the schematic diagram of a line cake transposition structure in transformer low voltage winding single spiral coil in the present embodiment, and as shown in Figure 1, this internal coil diameter place divides equally and is provided with multiple stay 1, the transposition line cake 2 between every two stays 1 is provided with a S shape transposition structure 3.
Each transposition structure 3 place, wire completely evenly replaces, and one, the top wire of line cake moves to the bottom of line cake, and the bottom wire of line cake moves to the top of line cake.
At this moment easily damage insulation when solid conductor folding S is curved, so wire is in S shape transposition structure 3 bending place, leave the margin of safety of 10-15 degree from inside to outside.
For preventing solid conductor in S crook and other wire short circuits, so bag insulation should be added in cake 60 millimeters of places online.Described insulation adopts paperboard strip, specifically as shown in Figures 2 and 3, Fig. 2 be in Fig. 1 S shape transposition structure E to schematic diagram.B/2 place is the curved mid portion of whole S, is broken by edge insulator because easy herein, so need thicken the insulation of this part.The transition of preferred insulation thickness σ to be 0.5mm, B/4 be B/2.
Fig. 3 is S shape transposition structure bag insulation schematic diagram in Fig. 1.At cardboard 5 the cake width along the line of S shape transposition structure 3 place thickness 0.5mm, width 60mm to by wrapped for wire 6 one week, overlap by S crook.
During design, the thickness that the height of S shape transposition structure 3 place oil duct is not less than bag insulated conductor adds two millimeters, and coil only establishes a kind of oil duct as far as possible.Arrange oil duct at S shape transposition structure near the side of transposed conductor, the height of described oil duct is 3.5 millimeters.Oil duct is arranged on herein, conserve space; And reasonably oil duct height ensures the normal gallery space of line cake.
Embodiment 2
When coil adopts composite conductor, when adopting transposition structure of the present invention, the solid conductor of composite conductor inside need replace.Fig. 4 is composite conductor internal single cable wire transposition schematic diagram in the present embodiment, specifically sees described in Fig. 4, and the line of the inside is changed to ragged edge, and the inside changed to by the line of ragged edge.In order to prevent short circuit between wire and wire, between two wires, add 0.5 thick U-shaped cardboard 5 puts to wire bending part, by U-shaped cardboard 5 from wire bending part bag to 60 millimeters, finally two lines are added bag insulating bag more together thick to l, l is 6-10 solid conductor bag paper thickness doubly.
Although the utility model discloses as above with preferred embodiment, the utility model is not defined in this.Any those skilled in the art, not departing from spirit and scope of the present utility model, all can make various changes or modifications, and therefore protection range of the present utility model should be as the criterion with claim limited range.
Claims (6)
1. a transformer low voltage winding single-screw transposition structure, it is characterized in that, internal coil diameter place divides equally and is provided with multiple stay, coil between every two stays is provided with a S shape transposition structure, each transposition structure place, wire completely evenly replaces, and one, the top wire of line cake moves to the bottom of line cake, and the bottom wire of line cake moves to the top of line cake; Wire, in S shape transposition structure bending place, leaves the margin of safety of 10-15 degree from inside to outside; The 60 millimeters of additional bag insulation of place's wire of online cake.
2. transposition structure according to claim 1, is characterized in that, the thickness that the height of described S shape transposition structure place oil duct is not less than bag insulated conductor adds two millimeters.
3. transposition structure according to claim 1, is characterized in that, wire is composite conductor, and the solid conductor of composite conductor inside, transposition structure place is completely evenly transposition all, and ragged edge changed to by the line of composite conductor the inside, and the inside changed to by the line of ragged edge.
4. transposition structure according to claim 3, is characterized in that, adds the U-shaped cardboard of 0.5 millimeters thick between two wires of composite conductor in the bending place of S shape transposition structure.
5. transposition structure according to claim 4, is characterized in that, U-shaped cardboard wraps 60 millimeters from bending place.
6. transposition structure according to claim 4, is characterized in that, two wires being provided with U-shaped cardboard add bag insulation outward together, and the thickness of insulation is the thickness of 6-10 solid conductor insulation doubly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221333.7U CN204537842U (en) | 2014-08-27 | 2015-04-14 | A kind of transformer low voltage winding single-screw transposition structure |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420487515 | 2014-08-27 | ||
| CN2014204875154 | 2014-08-27 | ||
| CN201520221333.7U CN204537842U (en) | 2014-08-27 | 2015-04-14 | A kind of transformer low voltage winding single-screw transposition structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204537842U true CN204537842U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520221333.7U Expired - Fee Related CN204537842U (en) | 2014-08-27 | 2015-04-14 | A kind of transformer low voltage winding single-screw transposition structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204537842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509730A (en) * | 2020-11-26 | 2021-03-16 | 常州西电变压器有限责任公司 | Single-row transposed conductor and preparation method thereof |
-
2015
- 2015-04-14 CN CN201520221333.7U patent/CN204537842U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509730A (en) * | 2020-11-26 | 2021-03-16 | 常州西电变压器有限责任公司 | Single-row transposed conductor and preparation method thereof |
| CN112509730B (en) * | 2020-11-26 | 2022-05-31 | 常州西电变压器有限责任公司 | Single-row transposed conductor 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: 20150805 Termination date: 20200414 |