CN204303548U - A kind of helical winding structure - Google Patents
A kind of helical winding structure Download PDFInfo
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- CN204303548U CN204303548U CN201420497499.7U CN201420497499U CN204303548U CN 204303548 U CN204303548 U CN 204303548U CN 201420497499 U CN201420497499 U CN 201420497499U CN 204303548 U CN204303548 U CN 204303548U
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Abstract
The utility model relates to a kind of helical winding structure, multiple conducting wires and around, replace separately successively for outermost solid conductor, every root wire is replaced to penetralia by most external, forms the loop construction of complete transposition; In the oil clearance of the position of replacing between the line cake supported by cushion block; Fan-shaped cushion block and insulating paper is provided with between transposition wire and adjacent lines cake.The utility model ensure that the complete transposition between several paralleled conductor wire, reduces the load loss of transformer, which in turn improves the Electric Field Distribution in coil, improves anti-short circuit capability, thus improves product operational reliability.
Description
Technical field
The utility model relates to a kind of Transformer Manufacturing Technology, specifically a kind of helical winding structure.
Background technology
At present, power transformer low pressure winding is due to the larger feature of its ampacity, many employings single screw structure, in the power transformer that capacity is larger, adopt the low-voltage coil wire of paper-covered copper flat wire coiling and can be a lot of around radical, at this time, the transposition in order to reduce between parallel conducting wire that coil loss carries out is most important.In original structure, the transposition forms such as many employings 424,242 (see Fig. 1), the bit positions of this kind of transposition to be determined around radical according to wire, so for wire and restricted around radical, and transposition usually not exclusively, makes the decrease of coil loss can only be defined within the specific limits.In addition, the coil hole in axial direction (see Fig. 2) increased due to transposition can make the Electric Field Distribution at this place distort, also to make it and ampere-turn equilibrium between other coil is destroyed, reduces the anti-short circuit capability of coil, in a word, hidden danger is brought to the safe operation of power transformer.
Utility model content
For the low-voltage coil of power transformer single screw in prior art and, transposition more around wire radical not exclusively, electric field distortion, the deficiency such as anti-short circuit capability reduction, the technical problems to be solved in the utility model be to provide a kind ofly to replace completely, Electric Field Distribution is good, anti-short circuit capability is strong helical winding structure.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of helical winding structure of the utility model, multiple conducting wires and around, replace separately successively for outermost solid conductor, every root wire is replaced to penetralia by most external, forms the loop construction of complete transposition.
In the oil clearance of the position of replacing between the line cake supported by cushion block.
Fan-shaped cushion block and insulating paper is provided with between transposition wire and adjacent lines cake.
When each transposition occurs, the position of transposition is determined according to Distribution of Magnetic Field.
The utility model has following beneficial effect and advantage:
1. the utility model ensure that the complete transposition between several paralleled conductor wire, reduce the load loss of transformer, which in turn improve the Electric Field Distribution in coil, avoid the most high workload field intensity caused due to transposition electric field distortion, also the ampere-turn equilibrium between coil is optimized, improve anti-short circuit capability, thus improve product operational reliability.
Accompanying drawing explanation
Fig. 1 be in prior art 12 wires and around single spiral coil 424 to replace schematic diagram;
Fig. 2 be in prior art 12 wires and around single spiral coil 242 to replace schematic diagram;
Fig. 3 is that in the utility model, single spiral coil 242 transposition launches schematic diagram;
Fig. 4 A is transposition structural representation in helical winding in the utility model;
Fig. 4 B is the A-A generalized section of Fig. 4 A;
Fig. 5 A is transposition wire process schematic perspective view in the utility model;
Fig. 5 B is transposition wire process left view in the utility model;
Fig. 5 C is that in the utility model, transposition wire adds the schematic diagram after insulation.
Wherein, 1 is 1/2 place standard transposition in single spiral coil, 2 for being replaced the axial hole caused by standard in single spiral coil, 3 is the special transposition in 1/4,3/4 place in single spiral coil, 4 is the axial hole caused by special transposition in single spiral coil, and 5 is fan-shaped cushion block, and 6 is oil clearance cushion block, 7 for changing solid conductor to inner side from line cake outermost in position, 8 for add bag insulation processing be after transposition wire.
Embodiment
Below in conjunction with Figure of description, the present invention is further elaborated.
As shown in Fig. 3,4A, 4B, a kind of helical winding structure of the utility model, multiple conducting wires and around, replace separately successively for outermost solid conductor, every root wire is replaced to penetralia by most external, forms the loop construction of complete transposition; In the oil clearance of the position of replacing between the line cake supported by cushion block; Fan-shaped cushion block and insulating paper is provided with between transposition wire and adjacent lines cake; When each transposition occurs, the position of transposition calculates according to Distribution of Magnetic Field to be determined.
The utility model loop construction is applicable to the power transformer adopting the ampacity of single spiral coil structure larger, and transposition number is equal with the quantity of single parallel conducting wire.The position of transposition can calculate according to Distribution of Magnetic Field to be determined.When each transposition occurs, the curved operation of row Wei (as shown in Figure 3) is entered to outermost single line, make its position along the radial direction of coil be changed to inner side (as shown in Fig. 4 A, 4B) by outermost.In the oil clearance of the space that transposition realizes between adjacent lines cake, realized by the support of cushion block, the transition that oil clearance size arrives normal place from here realizes by cushion block.Fan-shaped cushion block is placed between transposition wire and adjacent lines cake, and with crimped paper, the reinforcement of insulating is done to this wire and adjacent lines cake, in order to avoid the impact on electric field brought due to the change of transposition wire shape, improve Electric Field Distribution, provide enough electrical safety nargin.The bending of transposition wire and add insulating barrier process as shown in Fig. 5 A ~ 5C.
The utility model replaces at every turn and only operates a wire, the space that transposition takies is less, can not in " hole " of transposition generating coil axial direction, and the overall Electric Field Distribution of coil is better, and the ampere-turn equilibrium between other coil is better, and safe operation coefficient is higher; The position that the utility model transposition occurs can calculate random adjustment according to magnetic field, the change of every root wire in the radial direction of coil (stray field density is all different) position is realized by each ex-situ operations to solid conductor, the stray field summation that final realization each root in wire surround is equal, namely there is not potential difference between parallel conducting wire, also the circulation between namely not producing due to parallel conducting wire and the load loss caused, be complete transposition, the load loss caused due to circulation loss can be effectively reduced.
Claims (2)
1. a helical winding structure, multiple conducting wires and around, it is characterized in that: outermost solid conductor is independent transposition structure successively, and every root wire is replaced to penetralia by most external, forms the loop construction of complete transposition; In the oil clearance of the position of replacing between the line cake supported by cushion block; When each transposition occurs, the position of transposition is determined according to Distribution of Magnetic Field.
2., by helical winding structure according to claim 1, it is characterized in that: between transposition wire and adjacent lines cake, be provided with fan-shaped cushion block and insulating paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420497499.7U CN204303548U (en) | 2014-08-29 | 2014-08-29 | A kind of helical winding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420497499.7U CN204303548U (en) | 2014-08-29 | 2014-08-29 | A kind of helical winding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204303548U true CN204303548U (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420497499.7U Active CN204303548U (en) | 2014-08-29 | 2014-08-29 | A kind of helical winding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204303548U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841402A (en) * | 2019-02-22 | 2019-06-04 | 正泰电气股份有限公司 | Transformer coil pressure method |
| CN111816415A (en) * | 2020-06-19 | 2020-10-23 | 山东电力设备有限公司 | Energy dissipation protection transformer for flexible direct current transmission |
-
2014
- 2014-08-29 CN CN201420497499.7U patent/CN204303548U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841402A (en) * | 2019-02-22 | 2019-06-04 | 正泰电气股份有限公司 | Transformer coil pressure method |
| CN109841402B (en) * | 2019-02-22 | 2023-08-08 | 正泰电气股份有限公司 | Transformer coil pressurizing method |
| CN111816415A (en) * | 2020-06-19 | 2020-10-23 | 山东电力设备有限公司 | Energy dissipation protection transformer for flexible direct current transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |