CN220672362U - Cross coil lifting structure of balance traction transformer - Google Patents
Cross coil lifting structure of balance traction transformer Download PDFInfo
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- CN220672362U CN220672362U CN202320428888.3U CN202320428888U CN220672362U CN 220672362 U CN220672362 U CN 220672362U CN 202320428888 U CN202320428888 U CN 202320428888U CN 220672362 U CN220672362 U CN 220672362U
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052802 copper Inorganic materials 0.000 abstract description 9
- 239000010949 copper Substances 0.000 abstract description 9
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004804 winding Methods 0.000 description 23
- 238000003466 welding Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 230000017105 transposition Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The inner layer coil comprises b 1-b 10 coils and y 10-y 1 coils, the outer layer coil comprises b 20-b 2 coils and y 2-y 20 coils, the b10 head is connected with the b20 head through a whole line, the y10 head is connected with the y20 head through a whole line, the b 10-b 20 head is crossed with the y 10-y 20, soft angle rings are arranged at the positions of the b 10-b 20 head and the y 10-y 20 head, a plurality of cushion blocks are arranged between equidistant turns of the inner layer coil and the outer layer coil, the cross part of the inner layer coil and the outer layer coil can be lifted conveniently and rapidly by a lifting layer method, copper skin is not required to be led out, the defect of reliable insulation is avoided, the short circuit resistance of the coil is enhanced, and the production time is saved.
Description
Technical Field
The utility model belongs to the technical field of the wire continuous winding structure of the balanced traction transformer, in particular to a layer lifting structure of a crisscrossed coil of a YnV balanced traction transformer
Background
At present, the electrified railway adopts more traction transformers with V and V wiring, and the three phases of a power grid are seriously unbalanced due to the single-phase power supply load characteristic of the electrified railway, and the negative sequence component is very large. The YNV type balanced traction transformer can effectively eliminate third harmonic, the negative sequence voltage percentage is smaller, the influence on a power grid is smaller, and the traction transformer with V wiring has obvious advantages compared with a traction transformer with V wiring.
The windings of the low-voltage b-phase extension coils b3 and b4 of the 110KV grade YNV traction transformer need to be wound in a crisscross manner, the traditional scheme is that the crisscross parts are led out through copper sheet welding or lead wires are disconnected and splice-welded, the welding amount is large, the lifting allowance is difficult to master, and the coil press-mounting is easy to damage insulation. Through researching a novel winding scheme, continuous wire winding is adopted, so that welding defects are avoided, and production efficiency and quality assurance are improved.
In the prior art, the winding of the crisscross coil in the middle of the inner layer and the outer layer is very difficult, the crisscross layer lifting part is very difficult to process, and once the crisscross layer lifting part is improperly processed, the insulation of a wire is very easy to damage in the coil press-mounting process, so that test breakdown or field operation burnout is caused. The traditional layer lifting mode is that the welding copper sheet is led out or the middle part is disconnected and welded, the two modes are difficult to operate, and particularly the welding allowance is difficult to master. Moreover, the copper sheet welding mode is adopted, the insulation distance is increased, the lead-out position of the copper sheet is reserved, the cost is high, and the material waste is serious.
Disclosure of Invention
In order to solve the problems, the present disclosure provides a cross coil lifting structure of a balance traction transformer, an inner layer coil is arranged in the balance traction transformer, an outer layer coil is arranged on an outer layer of the inner layer coil, the inner layer coil comprises b 1-b 10 coils and y 10-y 1 coils, the outer layer coil comprises b 20-b 2 coils and y 2-y 20 coils, two ends of the coils in the b 1-b 10 coils, the y 10-y 1 coils, the b 20-b 2 coils and the b 20-b 2 coils are respectively provided with a corresponding coil head, the b10 head is connected with a b20 head whole line, the y10 head is connected with a y20 head whole line, the b 10-b 20 and y 10-y 20 are crossed, soft angle rings are arranged at the positions of the b 10-b 20 head and the y 10-y 20 head, a plurality of cushion blocks are arranged between equidistant turns of the inner layer coil and the outer layer coil, the inner layer middle cross coil and the outer layer middle cross coil are wound by adopting self-adhesive transposition wires, each wire is composed of 31 copper wires, the traditional welding lifting method is almost not realized, the lifting method can realize the lifting of the inner layer coil and the outer layer coil cross part conveniently and quickly, copper sheets are not required to be led out, wire breakage welding is not required, insulation reliability is ensured, welding defects are avoided, the short circuit resistance of the coils is enhanced, and production time is saved.
The number of turns of the wires of the y 10-y 1 coil is 39 turns, the number of turns of the wires of the y 2-y 20 coil is 39 turns, the number of turns of the wires of the b 1-b 10 coil is 39 turns, the number of turns of the wires of the b 20-b 2 coil is 39 turns, the number of turns of the wires of the y 1-y 2 coil is 78 turns, and the number of turns of the wires of the b 1-b 2 coil is 78 turns.
The upper part of the inner layer coil is a vertical b 1-b 10 coil, the lower part of the inner layer coil is a vertical y 10-y 1 coil, the upper part of the outer layer coil is a vertical b 20-b 2 coil, the lower part of the outer layer coil is a vertical y 2-y 20 coil, a surrounding screen is arranged between the inner layer coil and the outer layer coil, an insulating inner cylinder is arranged on the inner side of the inner layer coil, 3-4 sections of turns of the inner layer coil and the outer layer coil, cushion blocks are arranged on auxiliary stays of 40-41 sections of turns and 74-75 sections of turns, and soft angle rings are arranged inside and outside one turn on each of the positions of the y10 head, the y20 head, the b10 head and the b20 head.
The beneficial effects are that:
the middle cross coil of the inner layer and the outer layer is wound by adopting self-adhesive transposition wires, each wire consists of 31 copper wires, and the traditional welding lifting mode is hardly realized.
By the layer lifting method, the layers of the crisscrossed parts of the inner and outer coils can be lifted conveniently and quickly, copper sheets are not required to be led out, and broken wires are not required to be welded.
The insulation is ensured to be reliable, the welding defect is eliminated, the short circuit resistance of the coil is enhanced, and the production time is saved.
Drawings
FIG. 1 is a schematic diagram of a balanced traction transformer cross coil riser structure;
FIG. 2 is a schematic circuit diagram of a balanced traction transformer cross coil riser structure;
FIG. 3 is a schematic diagram of the inner layer coil wiring structure of the cross coil lift structure of the balanced traction transformer;
FIG. 4 is a schematic diagram of the outer coil routing structure of the balanced traction transformer cross coil riser structure;
FIG. 5 is a schematic top-down wiring diagram of a cross coil riser structure of the balanced traction transformer;
in the figure; 1. the inner coil, 2, outer coil, 3, insulating inner tube, 4, the purse-string, 5, b10 head, 6, y10 head, 7, y20 head, 8, b20 head, 9, cushion, 10, soft angle ring.
Detailed Description
In order to enhance the understanding of the present utility model, the present utility model will be further described in detail with reference to the following examples and drawings, which are provided for the purpose of illustrating the present utility model only and are not to be construed as limiting the scope of the present utility model.
An inner layer coil 1, an outer layer coil 2, an insulating inner cylinder 3, a shield 4, a b10 head 5, a y10 head 6, a y20 head 7, a b20 head 8, a cushion block 9 and a soft angle ring 10.
As shown in fig. 1, 2, 3, 4, 5;
the balance traction transformer is internally provided with an inner layer coil 1, the outer layer of the inner layer coil 1 is provided with an outer layer coil 2, the inner layer coil 1 comprises b 1-b 10 coils and y 10-y 1 coils, the outer layer coil 2 comprises b 20-b 2 coils and y 2-y 20 coils, the two ends of the coils in the b 1-b 10 coils, the y 10-y 1 coils, the b 20-b 2 coils and the b 20-b 2 coils are respectively provided with a corresponding coil head, the b10 head 5 is connected with the whole line of the b20 head 8, the y10 head 6 is connected with the whole line of the y20 head 7, the cross between the b 10-b 20 and the y 10-y 20 coils is realized, soft angle rings 10 are respectively arranged at the positions of the b 10-b 20 head 8 and the y 10-y 20 head 7, a plurality of cushion blocks 9 are respectively arranged between equidistant coils of the inner layer coil 1 and the outer layer coil 2, the number of turns of the wires of the y 10-y 1 coil is 39 turns of wires, the number of turns of the wires of the y 2-y 20 coil is 39 turns of wires, the number of turns of the wires of the b 1-b 10 coil is 39 turns of wires, the number of turns of the wires of the b 20-b 2 coil is 39 turns of wires, the number of turns of the wires of the y 1-y 2 coil is 78 turns, the number of turns of the wires of the b 1-b 2 coil is 78 turns, the upper part of the inner layer coil 1 is a vertical b 1-b 10 coil, the lower part of the inner layer coil 1 is a vertical y 10-y 1 coil, the upper part of the outer layer coil 2 is a vertical b 20-b 2 coil, the lower part of the outer layer coil 2 is a vertical y 2-y 20 coil, a surrounding screen 4 is arranged between the inner layer coil 1 and the outer layer coil 2, an insulating inner cylinder 3 is arranged on the inner side of the inner layer coil 1, 3, 4 sections of turns, 40 sections of turns, 41 sections of turns, 74 sections and 75 sections of auxiliary stays are all provided with cushion blocks 9, y10 head 6, y20 head 7%7 Soft angle rings 10 are arranged inside and outside one turn at the positions of the b10 head 5 and the b20 head 8.
Implementation examples;
adopting a continuous wire lifting structure, firstly winding y 1-y 10 coils (39 turns in total) at the lower part of an inner layer from bottom to top in a left winding direction (clockwise) on a host machine vertical winding machine, transposing 3-4 turns of the inner layer according to requirements, continuously and temporarily winding the y 20-y 2 coils (39 turns in total) at the upper part of the outer layer after the original lifting layer on the position b 10-b 1 at the upper part of the inner layer after the transposition of 3-4 turns;
and then synchronously winding the wires of the b 1-b 10 coils from top to bottom on the upper position of the inner layer of the temporarily wound y 20-y 2 coils on the host vertical winding machine from top to bottom, paying off the wires of the y 20-y 2 coils from top to bottom in a anticlockwise direction, synchronously winding the wires of the b 1-b 10 coils from top to bottom in a anticlockwise left winding direction and paying off the wires of the y 20-y 2 coils, synchronously carrying out the wire winding of the b 1-b 10 coils and paying off the wires of the y 20-y 2 coils, winding one turn of the b 1-b 10 coils, putting one turn of the wires of the y 20-y 2 coils, and synchronously carrying out the auxiliary vertical winding machine and the host vertical winding machine.
The wires of the b 1-b 10 coils must be at the lower part, and the wires of the y 20-y 2 coils must be at the upper part, so that the wires do not cross at the middle layer lifting part, otherwise, the layer lifting cannot be reliably performed. And when 39 turns of wires of the Y20-Y2 coil temporarily wound by the host vertical winding machine are completely discharged, the 39 turns of wires of the b 1-b 10 coil are completely wound, and the y 1-y 10 coil at the lower part of the inner layer and the b 1-b 10 coil at the upper part of the inner layer are completely wound.
The coils at the upper parts b 1-b 10 of the inner layers are prepared for lifting layers in the middle, one turn of coil is needed to be advanced than the coils at the lower parts y 1-y 10 of the inner layers, and 2-3 turns of transposition is needed, otherwise, the lifting layers of the wires of the inner and outer layers are crossed and cannot meet the drawing requirements; at this time, b10 to b20 and y10 to y20 liter of the layer S are bent, and after the outer stay and the paper tube are placed, the outer coil 2 can be wound and prepared.
And continuously winding the b 20-b 2 coils (lifting layers are positioned at 2-3 turns) at the lower part of the outer layer by using the main machine vertical winding machine b 10-b 20 lifting layer wire from top to bottom and from left to right, continuously winding the y 20-y 2 coils (lifting layers are positioned at 3-4 turns) by using the y 10-y 20 lifting layer wire from bottom to right (left winding direction) after the main machine vertical winding machine and the pay-off rack are completely separated, and finally, externally crossing the lifting layer positions until the y 20-y 2 coils are completely wound, thereby completely completing the lifting layers of the crisscrossed coils.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (8)
1. The balanced traction transformer is internally provided with an inner layer coil, and the outer layer of the inner layer coil is provided with an outer layer coil, and is characterized in that the inner layer coil comprises b 1-b 10 coils and y 10-y 1 coils, the outer layer coil comprises b 20-b 2 coils and y 2-y 20 coils, two ends of the coils in the b 1-b 10 coils, the y 10-y 1 coils, the b 20-b 2 coils and the y 2-y 20 coils are respectively provided with corresponding coil heads, the b10 heads are connected with b20 head wires, the y10 heads are connected with y20 head wires, the b 10-b 20 and y 10-y 20 coils are crossed, soft angle rings are respectively arranged at the positions of the b 10-b 20 heads and the y 10-y 20 heads, and a plurality of cushion blocks are arranged between equidistant coil turns of the inner layer coil and the outer layer coil.
2. The balanced traction transformer cross coil lifting structure according to claim 1, wherein the number of turns of the wires of the y 10-y 1 coil is 39 turns of the wires, the number of turns of the wires of the y 2-y 20 coil is 39 turns of the wires, the number of turns of the wires of the b 1-b 10 coil is 39 turns of the wires, the number of turns of the wires of the b 20-b 2 coil is 39 turns of the wires, the number of turns of the wires of the y 1-y 2 coil is 78 turns, and the number of turns of the wires of the b 1-b 2 coil is 78 turns.
3. The cross coil lifting structure of the balanced traction transformer according to claim 1, wherein the upper part of the inner coil is a vertical b 1-b 10 coil, and the lower part of the inner coil is a vertical y 10-y 1 coil.
4. The cross coil lifting structure of the balanced traction transformer according to claim 1, wherein the upper part of the outer coil is a vertical b 20-b 2 coil, and the lower part of the outer coil is a vertical y 2-y 20 coil.
5. The cross coil lifting structure of the balanced traction transformer according to claim 1, wherein a screen is arranged between the inner coil and the outer coil.
6. The balanced traction transformer cross coil lifting structure according to claim 1, wherein an insulating inner cylinder is arranged on the inner side of the inner layer coil.
7. The cross coil lifting structure of the balanced traction transformer according to claim 2, wherein the auxiliary stays of 3, 4 turns, 40, 41 turns and 74, 75 turns of the inner coil and the outer coil are provided with cushion blocks.
8. The cross coil lifting structure of the balance traction transformer according to claim 2, wherein soft angle rings are arranged inside and outside one turn on each of the y10 head, the y20 head, the b10 head and the b20 head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320428888.3U CN220672362U (en) | 2023-03-07 | 2023-03-07 | Cross coil lifting structure of balance traction transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320428888.3U CN220672362U (en) | 2023-03-07 | 2023-03-07 | Cross coil lifting structure of balance traction transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220672362U true CN220672362U (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320428888.3U Active CN220672362U (en) | 2023-03-07 | 2023-03-07 | Cross coil lifting structure of balance traction transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220672362U (en) |
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2023
- 2023-03-07 CN CN202320428888.3U patent/CN220672362U/en active Active
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