CN219349972U - Multilayer sectional combined transformer coil structure with tap voltage - Google Patents
Multilayer sectional combined transformer coil structure with tap voltage Download PDFInfo
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- CN219349972U CN219349972U CN202320567683.3U CN202320567683U CN219349972U CN 219349972 U CN219349972 U CN 219349972U CN 202320567683 U CN202320567683 U CN 202320567683U CN 219349972 U CN219349972 U CN 219349972U
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Abstract
The coil structure comprises a sectional multilayer coil part and a continuous multilayer coil part, wherein the continuous multilayer coil part is arranged at the bottom of the coil structure, the tap voltage terminal above the continuous multilayer coil part is connected with the sectional multilayer part, the coil tail terminal of one section of coil of the sectional multilayer part is connected with the bottom of the other section of coil, and the coil interlayer insulation is arranged between the sectional multilayer coil part and the continuous multilayer coil part, so that the structural form of the coil and the position of the tap voltage are changed, the value of the coil interlayer voltage can be effectively controlled, the generation factor of partial discharge can be eliminated, the coil ampere turn balance problem can be improved, the leakage magnetic flux can be reduced, and the short circuit resistance of the transformer coil can be improved.
Description
Technical Field
The utility model belongs to the technical field of transformer coil structures, and particularly relates to a multi-layer sectional combined transformer coil structure with tap voltage, which is suitable for voltage of 35kV and below and tap voltage requirements of 25000kVA and below.
Background
Previously produced transformer coils with voltages of 35kV and below, capacities of 25000kVA and multiple voltage outputs are mainly realized in two structural forms. One coil structure is a continuous multi-layer structure, with tap voltages being led from one layer in between to the coil ends; another coil structure is a segmented multi-layer, with tap voltages being drawn from a layer in the middle of a segment to the coil ends. The coil structures of the two transformers with the tap voltage have some performance shortages, the continuous multilayer structure with the tap voltage has the interlayer voltage which is too high, the transformer is easy to generate partial discharge, insulating materials can be damaged, and the safety and the service life of the transformer are affected; the segmented multi-layer structure with tap voltage has the problems of unbalanced ampere turns at the upper part and the lower part of the coil, serious magnetic leakage and poor short-circuit resistance, and is a hidden danger for the safe operation of the transformer.
Disclosure of Invention
In order to solve the above problems, a multi-layer sectional combined transformer coil structure with tap voltage is provided, the coil structure is provided with a wire inlet terminal, a tap voltage terminal, a coil tail terminal and a coil interlayer insulation, the coil structure comprises a sectional multi-layer coil part and a continuous multi-layer coil part, the continuous multi-layer coil part is arranged at the bottom of the coil structure, the tap voltage terminal above the continuous multi-layer coil part is connected with the sectional multi-layer part, the coil tail terminal of one section of coil of the sectional multi-layer part is connected with the bottom of the other section of coil, and a coil interlayer insulation is arranged between the sectional multi-layer coil part and the continuous multi-layer coil part, so that the structural form of the coil and the position of the tap voltage are changed, the value of the coil interlayer voltage can be effectively controlled, the generation factor of partial discharge is eliminated, the coil ampere turn balance problem is improved, the leakage magnetic flux is reduced, and the short circuit resistance of the transformer coil is improved.
The coil wire inlet terminal is arranged at the bottom end of the continuous multilayer coil part, the tap voltage terminal is arranged at the top end of the continuous multilayer coil, the sectional multilayer part is provided with a plurality of sectional coils, one sectional coil is connected with the continuous multilayer coil through the tap voltage terminal, the coil tail terminal is arranged at the top of the sectional coil, the value of the voltage between each layer of the coil is effectively controlled, the balance problem of the integral ampere turn of the coil can be improved, the leakage magnetic flux is reduced, the short-circuit resistance of the transformer coil is improved, and the transformer coil is safer and more reliable than the prior simple continuous multilayer and sectional multilayer structure, and the production and manufacturing cost and efficiency are not reduced.
Coil interlayer insulation is arranged between the tap voltage terminal and the continuous multi-layer coil, and the segmented coil is connected and conducted with the other segmented coil through the coil tail terminal.
The beneficial effects are that:
the structure form of the coil and the position of the tap voltage are changed, so that the value of the interlayer voltage of the coil can be effectively controlled, the generation factor of partial discharge is eliminated, the balance problem of the ampere turns of the coil can be improved, the leakage magnetic flux is reduced, and the short-circuit resistance capability of the transformer coil is improved.
The voltage value between layers of the coil is effectively controlled, the balance problem of the integral ampere turn of the coil can be improved, the leakage magnetic flux is reduced, the short-circuit resistance of the transformer coil is improved, and the transformer coil is safer and more reliable than the prior simple continuous multi-layer structure and the simple segmented multi-layer structure, and the production and manufacturing cost and the efficiency are not reduced.
Compared with the prior simple continuous multi-layer structure and the simple segmented multi-layer structure, the method is safer and more reliable, does not reduce the production and manufacturing cost and the efficiency, and is greatly helpful for improving the quality of products.
Drawings
FIG. 1 is a schematic diagram of a multi-layer segmented combined transformer coil structure with tapped voltages;
FIG. 2 is a prior art continuous multi-layer coil tapped voltage configuration;
FIG. 3 is a prior art segmented multi-layer coil tapped voltage configuration;
in the figure; 1. the multi-layer coil part comprises a segmented multi-layer coil part, a continuous multi-layer coil part, a coil incoming line terminal, a tap voltage terminal, a coil tail terminal and a coil interlayer insulation.
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.
A segmented multilayer coil part 1, a continuous multilayer coil part 2, a coil wire inlet terminal 3, a tap voltage terminal 4, a coil tail terminal 5 and a coil interlayer insulation 6.
As shown in fig. 1, 2 and 3;
the coil structure of the multi-layer sectional combined transformer with tap voltage is provided with a wire inlet terminal, a tap voltage terminal 4, a coil tail terminal 5 and a coil interlayer insulation 6, the coil structure comprises a sectional multi-layer coil part 1 and a continuous multi-layer coil part 2, the continuous multi-layer coil part 2 is arranged at the bottom of the coil structure, the tap voltage terminal 4 above the continuous multi-layer coil part 2 is connected with the sectional multi-layer part, the coil tail terminal 5 of one section of coil of the sectional multi-layer part is connected with the bottom of the other section of coil, a coil interlayer insulation 6 is arranged between the sectional multi-layer coil part 1 and the continuous multi-layer coil part 2, the bottom end of the continuous multi-layer coil part 2 is provided with a coil wire inlet terminal 3, the top end of the continuous multi-layer coil is provided with a plurality of sectional coils, one sectional coil is connected with the continuous multi-layer coil through the tap voltage terminal, the top of the sectional coil is provided with the coil tail terminal 5, the coil interlayer insulation 6 is arranged between the tap voltage terminal 4 and the continuous multi-layer coil, and the sectional coil is connected with the other section of the sectional coil through the coil tail terminal 5.
Implementation examples;
for transformer layer coil winding with tap voltage requirement, continuous multi-layer and segmented multi-layer combined coil structure is adopted. The method comprises the steps of adopting a continuous multi-layer coil structure to manufacture, leading out a tap voltage head when the tap voltage position is reached, and then adopting a segmented multi-layer coil structure to finish winding of the residual coil.
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 (5)
1. The coil structure is provided with a wire inlet terminal, a tap voltage terminal, a coil tail terminal and a coil interlayer insulation, and is characterized by comprising a segmented multilayer coil part and a continuous multilayer coil part, wherein the continuous multilayer coil part is arranged at the bottom of the coil structure, the tap voltage terminal above the continuous multilayer coil part is connected with the segmented multilayer part, the coil tail terminal of one section of coil of the segmented multilayer part is connected with the bottom of the other section of coil, and the coil interlayer insulation is arranged between the segmented multilayer coil part and the continuous multilayer coil part.
2. The multi-layer sectional combined transformer coil structure with tap voltage as claimed in claim 1, wherein the coil wire inlet terminal is provided at the bottom end of the continuous multi-layer coil part, and the tap voltage terminal is provided at the top end of the continuous multi-layer coil.
3. The multi-layer sectional combined transformer coil structure with tap voltage as claimed in claim 1, wherein the sectional multi-layer section is provided with a plurality of sectional coils, one sectional coil is connected with the continuous multi-layer coil through the tap point voltage terminal, and the top of the sectional coil is provided with a coil tail terminal.
4. The multi-layer sectional combined transformer coil structure with tap voltage as claimed in claim 2, wherein the tap voltage terminal is insulated from the continuous multi-layer coil by coil layers.
5. The multi-layer sectional combined transformer coil structure with tap voltage as set forth in claim 1, wherein said sectional coil is connected to another sectional coil via a coil tail terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320567683.3U CN219349972U (en) | 2023-03-22 | 2023-03-22 | Multilayer sectional combined transformer coil structure with tap voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320567683.3U CN219349972U (en) | 2023-03-22 | 2023-03-22 | Multilayer sectional combined transformer coil structure with tap voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219349972U true CN219349972U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320567683.3U Active CN219349972U (en) | 2023-03-22 | 2023-03-22 | Multilayer sectional combined transformer coil structure with tap voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219349972U (en) |
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2023
- 2023-03-22 CN CN202320567683.3U patent/CN219349972U/en active Active
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