CN212010678U - Foil winding low-voltage coil of outgoing line structure - Google Patents
Foil winding low-voltage coil of outgoing line structure Download PDFInfo
- Publication number
- CN212010678U CN212010678U CN202020704004.9U CN202020704004U CN212010678U CN 212010678 U CN212010678 U CN 212010678U CN 202020704004 U CN202020704004 U CN 202020704004U CN 212010678 U CN212010678 U CN 212010678U
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- outgoing line
- copper bar
- foil
- conductor
- line copper
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Abstract
The utility model discloses a foil winding low voltage coil of lead-out wire structure, its characterized in that: the transformer outgoing line copper bar is characterized by comprising an outgoing line copper bar, a conductor copper foil and interlayer insulation paper, wherein the outgoing line copper bar comprises a first outgoing line copper bar and a second outgoing line copper bar, the conductor copper foil is respectively welded with the first outgoing line copper bar and the second outgoing line copper bar, the interlayer insulation paper and the conductor copper foil are wound into a foil winding low-voltage coil on a special foil winding machine for one turn, and the first outgoing line copper bar and the second outgoing line copper bar are different in current-carrying cross section according to the characteristics of current distribution when the transformer runs and in places with different current densities. This neotype low-voltage coil, its lead-out wire copper bar changes from the end to the tail head cross-section, has both guaranteed transformer normal operating conductor current-carrying needs, has practiced thrift raw and other materials again, has improved the utilization ratio of conductor raw and other materials.
Description
Technical Field
The utility model belongs to the technical field of power equipment, concretely relates to lead wire structure's foil winding low voltage coil.
Background
As is known, for a low-voltage coil of a 10 kV-class distribution transformer, generally, because of the characteristics of large low voltage and current, mechanical strength of the coil, heat dissipation, etc., the low-voltage coil is generally designed into a foil-wound cylindrical structure, that is, a layer of conductor copper foil is one turn, adjacent conductors are separated by insulating paper, a first outgoing line and a last outgoing line are led out by hard copper buses with different cross sections according to the magnitude of current, two ends of the coil are simultaneously wound with upper ends for insulation, and the coil after winding is shaped into a finished coil.
However, the coil with the structure has the advantages of compact interlayer and turn-to-turn winding, high winding efficiency, equal height of a coil conductor and the coil, high stress resistance strength of the coil, leading out the coil through the hard bus bar to be connected with the outside, and the same design of the section from the end to the tail of the hard bus bar, so that the cost is high, the product market competition is not facilitated, and the cost of a power consumption unit is wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel structure, to the female section size change that arranges of low pressure foil winding coil lead-out wire, not only copper product saving improves conductor material utilization ratio moreover, reduces product cost.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a foil-wound low-voltage coil of lead-out wire structure, is including being qualified for the next round of competitions copper bar, conductor copper foil and interlayer insulating paper, the copper bar of being qualified for the next round of competitions includes first lead-out wire copper bar and second lead-out wire copper bar, the conductor copper foil welds with first lead-out wire copper bar, second lead-out wire copper bar respectively, the interlayer insulating paper is a circle and winds into foil-wound low-voltage coil on special foil-wound machine with the same one deck of conductor copper foil, the characteristics of current distribution when first lead-out wire copper bar and second lead-out wire copper bar are according to transformer operation, and the place of different current density.
Further, the conductor copper foil is an oxygen-free copper foil conductor.
Compared with the prior art, adopt above-mentioned technical scheme's beneficial effect: in the low-voltage coil in the prior art, the sections of the outgoing line copper busbar from the end head to the tail head are designed to be the same, so that the cost is high, and the market competition is not facilitated; this neotype low-voltage coil, its lead-out wire copper bar changes from the end to the tail head cross-section, has both guaranteed transformer normal operating conductor current-carrying needs, has practiced thrift raw and other materials again, has improved the utilization ratio of conductor raw and other materials.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a copper bar outgoing line;
fig. 3 is a sectional view taken along line a-a of fig. 2.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3, the utility model provides a foil-wound low-voltage coil of lead-out wire structure, including the copper bar of being qualified for the next round of competitions, conductor copper foil 3 and interlayer insulation paper 4, the copper bar of being qualified for the next round of competitions includes first lead-out wire copper bar 1 and second lead-out wire copper bar 2, conductor copper foil 3 welds with first lead-out wire copper bar 1, second lead-out wire copper bar 2 respectively, interlayer insulation paper 4 and conductor copper foil 3 together one deck are a circle and become foil-wound low-voltage coil on special foil-wound machine, current distribution's characteristics when first lead-out wire copper bar 1 and second lead-out wire copper bar 2 are operated according to the transformer, and the place of different current density, the conductor current-carrying cross section that adopts is different, conductor.
The technical solution of the present invention is not limited to the scope of the embodiments of the present invention, and the technical contents not described in detail in the present invention are known technologies.
Claims (2)
1. The utility model provides a foil winding low voltage coil of lead-out wire structure which characterized in that: the transformer outgoing line copper bar is characterized by comprising an outgoing line copper bar, a conductor copper foil and interlayer insulation paper, wherein the outgoing line copper bar comprises a first outgoing line copper bar and a second outgoing line copper bar, the conductor copper foil is respectively welded with the first outgoing line copper bar and the second outgoing line copper bar, the interlayer insulation paper and the conductor copper foil are wound into a foil winding low-voltage coil on a special foil winding machine for one turn, and the first outgoing line copper bar and the second outgoing line copper bar are different in current-carrying cross section according to the characteristics of current distribution when the transformer runs and in places with different current densities.
2. A foil-wound low-voltage coil of an outgoing line structure according to claim 1, characterized in that: the conductor copper foil is an oxygen-free copper foil conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020704004.9U CN212010678U (en) | 2020-04-30 | 2020-04-30 | Foil winding low-voltage coil of outgoing line structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020704004.9U CN212010678U (en) | 2020-04-30 | 2020-04-30 | Foil winding low-voltage coil of outgoing line structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212010678U true CN212010678U (en) | 2020-11-24 |
Family
ID=73410238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020704004.9U Active CN212010678U (en) | 2020-04-30 | 2020-04-30 | Foil winding low-voltage coil of outgoing line structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212010678U (en) |
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2020
- 2020-04-30 CN CN202020704004.9U patent/CN212010678U/en active Active
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