CN218038793U - Iron core and yoke plate structure of power transformer - Google Patents
Iron core and yoke plate structure of power transformer Download PDFInfo
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- CN218038793U CN218038793U CN202221312345.7U CN202221312345U CN218038793U CN 218038793 U CN218038793 U CN 218038793U CN 202221312345 U CN202221312345 U CN 202221312345U CN 218038793 U CN218038793 U CN 218038793U
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Abstract
The utility model relates to the technical field of transformers, in particular to a power transformer iron core and yoke sheet structure, which comprises an iron core column and two iron core yoke sheets, wherein the number of the iron core yoke sheets is two, and the two iron core yoke sheets are respectively arranged at two ends of the iron core column; the cross sectional area of the iron core yoke sheet is larger than that of the iron core column; the iron core yoke sheets and the iron core columns are arranged in N stages; the sheet width of the iron core yoke sheet is larger than that of the iron core column; the sheet width of the iron core yoke sheet is the same as that of the iron core column. The unequal cross-section design of the iron core column and the iron core yoke piece improves the magnetic flux density of the iron core column and reduces the magnetic flux density of the iron core yoke piece; the sectional area of the iron core yoke piece is increased, but the piece type of the iron core yoke piece is not increased, the processing difficulty of the iron core yoke piece is reduced, and the utilization rate of materials and the processing efficiency are improved; the mode of increasing the iron core yoke piece section reduces the noise of operation to a certain extent.
Description
Technical Field
The utility model belongs to the technical field of the transformer technique and specifically relates to a power transformer iron core and yoke plate structure is related to.
Background
A transformer core leg (transformer core), which is the main magnetic circuit portion in the transformer. Usually made by stacking hot-rolled or cold-rolled silicon steel sheets containing silicon in a high content and coated with an insulating varnish on their surface. The core column and the coil wound on the core column form a complete electromagnetic induction system. The power transmission capacity of the power transformer depends on the material and the cross-sectional area of the core limb. The core column of the traditional transformer core adopts the design of equal sections of the core column and the yoke sheets or the yoke sheets adopt the design of unequal sections of the T-shaped yoke sheets and the core column. The core column and the yoke piece are designed to have the same cross section, the magnetic flux density of the core column and the yoke piece is the same, the use of copper materials can be reduced by improving the magnetic flux density, but the over-high magnetic flux density can often cause the no-load loss to exceed the standard; the core column and the yoke piece have unequal section design, the core column and the yoke piece have different magnetic flux density, the piece type needs to be added, the production efficiency is reduced, and the material utilization rate is reduced.
The existing transformer with unequal section design of the core column and the yoke piece has the following problems: 1. along with the improvement of the energy efficiency grade of the power transformer, the consumption of high-grade silicon steel and copper materials is increased, the volume is increased and the cost is increased by adopting the traditional scheme; 2. if the sheet type of the traditional scheme is increased and the effect of reducing the idle load loss is not obvious, the production organization is not facilitated, and the material utilization rate and the production efficiency are low; 3. the traditional scheme is not beneficial to reducing the running noise of the transformer and reducing the noise pollution.
In order to solve the problem, the utility model provides a power transformer iron core and yoke piece structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a power transformer iron core and yoke piece structure has solved the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a power transformer iron core and yoke sheet structure comprises an iron core column and two iron core yoke sheets, wherein the two iron core yoke sheets are respectively arranged at two ends of the iron core column; the cross-sectional area of the iron core yoke sheet is larger than that of the iron core column.
Further, the iron core yoke piece and the iron core column are both set to be N-level.
Furthermore, the sheet widths of the first-stage iron core yoke piece, the second-stage iron core yoke piece and the third-stage iron core yoke piece are the same as the sheet width of the first-stage iron core column, the sheet width of the fourth-stage iron core yoke piece is the same as the sheet width of the second-stage iron core column, the sheet width of the fifth-stage iron core yoke piece is the same as the sheet width of the third-stage iron core column, and the sheet widths of the other stages of iron core yoke pieces are analogized in sequence to be the same as the sheet width of the iron core column until the last stage of the iron core yoke pieces.
Further, the sheet widths of the first-stage iron core yoke piece and the second-stage iron core yoke piece are the same as the sheet width of the first-stage iron core column, the sheet width of the third-stage iron core yoke piece is the same as the sheet width of the second-stage iron core column, the sheet width of the fourth-stage iron core yoke piece is the same as the sheet width of the third-stage iron core column, and the sheet widths of the other-stage iron core yoke pieces are the same as the sheet width of the iron core column by analogy until the last stage of the iron core yoke piece.
Further, the sheet width of the iron core yoke sheet is larger than that of the iron core column.
Further, the sheet width of the iron core yoke sheet is the same as that of the iron core column.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the unequal cross-section design of the iron core column and the iron core yoke piece improves the magnetic flux density of the iron core column and reduces the magnetic flux density of the iron core yoke piece;
2. the sectional area of the iron core yoke piece is increased, but the piece type of the iron core yoke piece is not increased, the processing difficulty of the iron core yoke piece is reduced, and the utilization rate of materials and the processing efficiency are improved;
3. the mode of increasing the iron core yoke piece section reduces the noise of operation to a certain extent.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings: fig. 1 is an assembly view of an iron core column and a yoke plate in the present invention;
FIG. 2 is a cross-sectional view of the core leg of the present invention;
fig. 3 is a cross-sectional view of the middle yoke piece of the present invention.
In the figure: 1. an iron core yoke piece; 2. an iron core column; 3. a first-stage core column; 4. a second-stage core column; 5. a third-stage core column; 6. a fourth-stage core column; 7. a fifth-stage core column; 8. an Nth-stage core column; 9. a first-stage iron core yoke piece; 10. a second-stage iron core yoke piece; 11. a third-stage iron core yoke piece; 12. a fourth-stage iron core yoke piece; 13. a fifth-stage iron core yoke piece; 14. and the Nth-stage iron core yoke piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a following technical scheme:
as shown in the figure, the first and second,
a power transformer iron core and yoke piece structure comprises an iron core column 2 and iron core yoke pieces 1, the number of the iron core yoke pieces 1 is two, the two iron core yoke pieces 1 are respectively arranged at two ends of the iron core column 2, the iron core yoke pieces 1 and the iron core column 2 are fixedly connected, and specific connection can refer to the prior art, and coils are wound outside the iron core column 2; the cross-sectional area of the iron core yoke sheet 1 is larger than that of the iron core column 2.
Further, the number of the iron core yoke pieces 1 and the number of the iron core legs 2 are both set to be N.
Further, the sheet widths of the first-stage iron core yoke piece 9, the second-stage iron core yoke piece 10 and the third-stage iron core yoke piece 11 are all the same as the sheet width of the first-stage iron core column 3, the sheet width of the fourth-stage iron core yoke piece 12 is the same as the sheet width of the second-stage iron core column 4, the sheet width of the fifth-stage iron core yoke piece 13 is the same as the sheet width of the third-stage iron core column 5, and the sheet widths of the other-stage iron core yoke pieces 1 are analogized in sequence to be the same as the sheet width of the iron core column 2 until the last stage of the iron core yoke pieces 1.
Further, the sheet widths of the first-stage iron core yoke piece 9 and the second-stage iron core yoke piece 10 are the same as the sheet width of the first-stage iron core column 3, the sheet width of the third-stage iron core yoke piece 11 is the same as the sheet width of the second-stage iron core column 4, the sheet width of the fourth-stage iron core yoke piece 12 is the same as the sheet width of the third-stage iron core column 5, and the sheet widths of the other-stage iron core yoke pieces 1 are the same as the sheet width of the iron core column 2 by analogy until the last stage of the iron core yoke pieces 1.
Further, the sheet width of the iron core yoke sheets 1 is larger than that of the iron core column 2.
Further, the sheet width of the core yoke sheet 1 is the same as that of the core limb 2.
1. In order to improve the density of the magnetic flux to a reasonable level, the sectional area of the core column of the iron core can be reduced, so that the weight of the whole core column of the iron core is reduced, the perimeter of the core column of the iron core is reduced, the length of the electromagnetic wire is shortened, the sectional area of the electromagnetic wire is reduced, and the weight of the electromagnetic wire is reduced; if the magnetic flux density of the cross section of the core leg and the cross section of the core yoke piece are both high, the no-load loss of the transformer may be larger than the national standard, and in order to reduce the no-load loss of the transformer to the national standard, the magnetic flux density needs to be further reduced, the cross section of the core leg is increased, so that the weight of the electromagnetic wire is increased, and if the cross section area is not increased, a higher grade silicon steel needs to be selected, so that the economical efficiency of the transformer is deteriorated. As shown in the attached drawing, the section of the iron core yoke piece is obviously larger than that of the iron core column, the magnetic flux density of the iron core yoke piece is low, and the magnetic flux density of the iron core column is high, so that the no-load loss of the transformer can be effectively controlled, the weight of the electromagnetic wire is reduced, and the economy of the product is improved.
2. The generation of noise is related to many factors, and the high magnetic flux density is one of the reasons, and although the magnetic flux density of the core limb is higher than that of the core yoke piece, the core limb is sleeved with a coil, and the shielding of the coil has a certain attenuation effect on the transmission of the noise. Since the upper and lower yokes of the core are not shielded (particularly in a dry-type transformer), the magnetic flux density of the core yoke pieces can be reduced to reduce noise.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A power transformer iron core and yoke plate structure is characterized in that: the iron core comprises an iron core column (2) and two iron core yoke pieces (1), wherein the number of the iron core yoke pieces (1) is two, and the two iron core yoke pieces (1) are respectively arranged at two ends of the iron core column (2); the cross sectional area of the iron core yoke sheet (1) is larger than that of the iron core column (2).
2. A power transformer core and yoke plate structure as claimed in claim 1, wherein: iron core yoke piece (1) all sets up to N level with iron core stem (2), is respectively: the iron core comprises a first-stage iron core yoke piece (9), a second-stage iron core yoke piece (10), a third-stage iron core yoke piece (11), a fourth-stage iron core yoke piece (12), a fifth-stage iron core yoke piece (13), and a first-stage iron core column (3), a second-stage iron core column (4), a third-stage iron core yoke piece (11), a fourth-stage iron core column (6) and a fifth-stage iron core column (7) which correspond to each other.
3. A power transformer core and yoke plate structure as claimed in claim 2, wherein: the sheet widths of the first-stage iron core yoke piece (9), the second-stage iron core yoke piece (10) and the third-stage iron core yoke piece (11) are the same as the sheet width of the first-stage iron core column (3), the sheet width of the fourth-stage iron core yoke piece (12) is the same as the sheet width of the second-stage iron core column (4), the sheet width of the fifth-stage iron core yoke piece (13) is the same as the sheet width of the third-stage iron core column (5), and the sheet widths of the other stages of iron core yoke pieces (1) are the same as the sheet width of the iron core column (2) in sequence by analogy until the last stage of the iron core yoke piece (1).
4. A power transformer core and yoke plate structure according to claim 2, characterized in that: the sheet width of the first-stage iron core yoke piece (9) and the second-stage iron core yoke piece (10) is the same as that of the first-stage iron core column (3), the sheet width of the third-stage iron core yoke piece (11) is the same as that of the second-stage iron core column (4), the sheet width of the fourth-stage iron core yoke piece (12) is the same as that of the third-stage iron core column (5), and the sheet widths of the other-stage iron core yoke pieces (1) are the same as that of the iron core column (2) by analogy until the last stage of the iron core yoke piece (1).
5. A power transformer core and yoke plate structure as claimed in claim 2, wherein: the sheet width of the iron core yoke sheet (1) is larger than that of the iron core stem (2).
6. A power transformer core and yoke plate structure as claimed in claim 2, wherein: the sheet width of the iron core yoke sheet (1) is the same as that of the iron core stem (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221312345.7U CN218038793U (en) | 2022-05-27 | 2022-05-27 | Iron core and yoke plate structure of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221312345.7U CN218038793U (en) | 2022-05-27 | 2022-05-27 | Iron core and yoke plate structure of power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218038793U true CN218038793U (en) | 2022-12-13 |
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Family Applications (1)
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| CN202221312345.7U Active CN218038793U (en) | 2022-05-27 | 2022-05-27 | Iron core and yoke plate structure of power transformer |
Country Status (1)
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| CN (1) | CN218038793U (en) |
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2022
- 2022-05-27 CN CN202221312345.7U patent/CN218038793U/en active Active
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