CN215868920U - Rectangular yoke core of distribution transformer - Google Patents
Rectangular yoke core of distribution transformer Download PDFInfo
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- CN215868920U CN215868920U CN202122454903.5U CN202122454903U CN215868920U CN 215868920 U CN215868920 U CN 215868920U CN 202122454903 U CN202122454903 U CN 202122454903U CN 215868920 U CN215868920 U CN 215868920U
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Abstract
The utility model relates to a rectangular yoke iron core of a distribution transformer, which comprises a core column and an iron yoke, wherein the core column comprises a core column main level sheet layer, a plurality of core column secondary level sheets are sequentially attached to two sides of the core column main level sheet layer, the width of the core column secondary level sheets is sequentially reduced along the direction far away from the core column main level sheet layer, the iron yoke comprises an iron yoke main level sheet layer which is overlapped and corresponds to the core column main level sheet layer, a plurality of iron yoke secondary level sheets are sequentially attached to two sides of the iron yoke main level sheet layer, the iron yoke secondary level sheets are overlapped and correspond to the core column secondary level sheets one by one, 2-4 iron yoke secondary level sheets close to the iron yoke main level sheet layer are iron yoke secondary level sheets, the height of the iron yoke secondary level sheets is the same as that of the iron yoke main level sheet layer, the consumption of the transformer iron core is saved, the cost is reduced, and the circumference of a winding wire is shortened by changing the cross sections of the core column and the iron yoke, the using amount of the transformer winding wire is greatly reduced, and the cost is reduced.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to the field of transformer cores, and specifically relates to a rectangular yoke core of a distribution transformer.
Background
The transformer iron core is a core component of the transformer, is a magnetic circuit medium for generating electricity by magnetism and electricity during the operation of the transformer, and plays a role of a supporting framework in the transformer.
The iron core mainly comprises two parts of a core column and an iron yoke. The traditional iron yoke structure mainly comprises an equal yoke structure (namely, the same shape with a core column) and a D-shaped yoke structure. However, as the energy efficiency standard of a new transformer is promoted by the state, no-load loss and load loss parameters are greatly reduced, and the yoke core structure can not effectively reduce the using amount of an iron core and the sectional area of a core column so as to reduce the using amount of a winding wire; although the D-shaped yoke reduces the using amount of a part of the iron core, the sectional area of the iron core column cannot be reduced, so that the using amount of a winding wire is effectively reduced. Therefore, the two traditional iron core structures cannot well meet the economical efficiency of the design of the transformer with the new energy efficiency standard.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the rectangular yoke iron core of the distribution transformer, which has the advantages of quick start, high efficiency, safety, reliability and convenient operation.
The utility model is realized through the following technical scheme, and provides a rectangular yoke iron core of a distribution transformer, which comprises a core column and an iron yoke, wherein the core column comprises a core column main level sheet layer, a plurality of core column secondary level sheets are sequentially attached to two sides of the core column main level sheet layer, the width of each core column secondary level sheet layer is sequentially reduced along the direction far away from the core column main level sheet layer, the iron yoke comprises iron yoke main level sheet layers which are overlapped and correspond to the core column main level sheet layers, a plurality of iron yoke secondary level sheets are sequentially attached to two sides of the iron yoke main level sheet layers, the iron yoke secondary level sheets are overlapped and correspond to the core column secondary level sheets one by one, 2-4 iron yoke secondary level sheets close to the iron yoke main level sheet layers are iron yoke secondary level sheets, and the heights of the iron yoke secondary level sheets are the same as the heights of the iron yoke main level sheet layers.
According to the scheme, the iron yoke main-level sheet layers correspond to the core column main-level sheet layers in a superposed mode, the iron yoke secondary-level sheet layers correspond to the core column secondary-level sheet layers in a superposed mode one by one, the width of the core column secondary-level sheet layers is gradually reduced along the direction far away from the core column main-level sheet layers, therefore, wires are convenient to wind on the core column, 2-4 iron yoke secondary-level sheet layers close to the iron yoke main-level sheet layers are the iron yoke secondary-level sheet layers, the height of the iron yoke secondary-level sheet layers is the same as that of the iron yoke main-level sheet layers, the height of 2-4 iron yoke secondary-level sheet layers close to the iron yoke main-level sheet layers is increased, the sectional area of the core column can be correspondingly reduced, no-load loss of an iron core is guaranteed to be unchanged, under the condition that the sectional area of the core column is reduced, the perimeter of the wires wound on the core column is effectively reduced, and the overall cost of the transformer is reduced.
And as optimization, 2-4 iron yoke secondary sheets close to the iron yoke secondary sheets are iron yoke tertiary sheets, and the height of the iron yoke tertiary sheets is the same and is smaller than that of the iron yoke secondary sheets. In the scheme, the height of the third-level lamination layer of the iron yoke is the same and is smaller than that of the second-level lamination layer of the iron yoke, so that the sectional area of the iron yoke can be further increased.
Preferably, the distance from the outer side of the iron yoke tertiary lamination layer to the outer side of the iron yoke secondary lamination layer is larger than the distance from the inner side of the iron yoke tertiary lamination layer to the inner side of the iron yoke secondary lamination layer. The distance from the outer side of the three-level iron yoke sheet layer to the outer side of the two-level iron yoke sheet layer is larger than the distance from the inner side of the three-level iron yoke sheet layer to the inner side of the two-level iron yoke sheet layer, so that the three-level iron yoke sheet layer is located at a position closer to the stem.
And optimally, 2-4 iron yoke secondary laminated layers close to the iron yoke tertiary laminated layers are iron yoke four-stage laminated layers, and the height of each iron yoke four-stage laminated layer is the same and is smaller than that of each iron yoke tertiary laminated layer. In the scheme, the four-level sheets of the iron yoke are the same in height and smaller than the three-level sheets of the iron yoke, so that the sectional area of the iron yoke can be further increased.
Preferably, the distance from the outer side of the four-level lamination layer of the iron yoke to the outer side of the three-level lamination layer of the iron yoke is smaller than the distance from the inner side of the four-level lamination layer of the iron yoke to the inner side of the three-level lamination layer of the iron yoke. In the scheme, the distance from the outer side of the four-level laminated layer of the iron yoke to the outer side of the three-level laminated layer of the iron yoke is smaller than the distance from the inner side of the four-level laminated layer of the iron yoke to the inner side of the three-level laminated layer of the iron yoke.
Preferably, two sides of the iron yoke main-stage lamination layer are respectively provided with 3 iron yoke secondary lamination layers. The both sides of indisputable yoke primary level lamella respectively are equipped with 3 indisputable yoke second grade lamellas in this scheme, under the prerequisite of guaranteeing indisputable yoke performance, and 3 indisputable yoke second grade lamellas can play the best reduce cost's effect.
The utility model has the beneficial effects that: compared with the traditional equal yoke and D-shaped yoke iron core structure, the rectangular yoke structure adopted by the utility model is characterized in that the cross section area of a core column is reduced, the cross section area of an iron yoke is increased, and the no-load loss of the iron core is ensured to be unchanged. Under the condition of reducing the sectional area of the core pillar, the perimeter of the core pillar can be effectively reduced, so that the perimeter of a wire wound on the core pillar is reduced, the using amount of the wire of the winding is reduced, and the overall cost of the transformer is finally reduced. And because the wire quantity is reduced, the overall axial size and radial size of the winding are reduced, the window height and center distance size of the iron core are further reduced, the iron core quantity is reduced, and finally the overall cost of the transformer is further reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along plane A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic cross-sectional view of a stem of the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;
FIG. 5 is a schematic cross-sectional view of an iron yoke according to the present invention;
shown in the figure:
1. core column, 2, yoke, 11, core column main stage sheet layer, 12, core column secondary stage sheet layer, 21, yoke main stage sheet layer, 22, yoke secondary stage sheet layer.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1 to 5, the rectangular yoke iron core of the distribution transformer comprises 3 core legs 1 and 3 iron yokes 2, wherein the iron yokes 2 are transversely arranged at the upper end and the lower end of each core leg 1, the iron yokes 2 are connected with the three core legs 1, and the upper iron yoke 2 and the lower iron yoke 2 are vertically and symmetrically arranged.
The stem 1 includes the secondary lamella 11 of stem main, the both sides of the secondary lamella 11 of stem main are respectively laminated in proper order and are had a plurality of secondary lamella 12 of stem, and the secondary lamella 12 of stem main and stem main is the steel sheet laminating with forming.
The width of the core pillar secondary sheet layer 12 is gradually decreased along the direction far away from the core pillar main sheet layer 11, and the thickness of the core pillar secondary sheet layer 12 is not changed or decreased along the direction far away from the core pillar main sheet layer 11, so that the cross section of the core pillar 1 is close to an oval shape, and winding wires can be wound on the core pillar 1 conveniently.
In this embodiment, two sides of the central pillar main-level piece layer 11 are respectively provided with 8 pillar sub-level piece layers 12.
The iron yoke 2 comprises an iron yoke main-stage laminated layer 21 which is overlapped with the core column main-stage laminated layer 11 and corresponds to the core column main-stage laminated layer, and the thickness of the iron yoke main-stage laminated layer 21 is the same as that of the core column main-stage laminated layer 11. The iron yoke main-stage sheet layer 21 is formed by laminating steel sheets, and each steel sheet of the iron yoke main-stage sheet layer 21 is flush with each steel sheet of the core column main-stage sheet layer 11.
The both sides of indisputable yoke primary lamella layer 21 respectively laminate in proper order have a plurality of indisputable yoke secondary lamella layers 22, indisputable yoke secondary lamella layer 22 corresponds with the coincidence of core column secondary lamella layer 12 one by one, and consequently 8 indisputable yoke secondary lamella layers 22 are respectively laminated in proper order to the both sides of indisputable yoke primary lamella layer 21 in this embodiment.
The iron yoke secondary sheet layer 22 is formed by laminating steel sheets, and each steel sheet of the iron yoke secondary sheet layer 22 is flush with each steel sheet of the core column secondary sheet layer 12.
The 2~4 secondary lamella 22 of indisputable yoke that are close to indisputable yoke primary lamella 21 are indisputable yoke secondary lamella, and the both sides of indisputable yoke primary lamella 21 respectively are equipped with 3 indisputable yoke secondary lamella in this embodiment, and the height of indisputable yoke secondary lamella all is the same with indisputable yoke primary lamella 21's height.
The 2~4 secondary lamella 22 of indisputable yoke that are close to indisputable yoke second grade lamella are the tertiary lamella of indisputable yoke, the height that highly the same and be less than indisputable yoke second grade lamella of indisputable yoke third grade lamella, the both sides of indisputable yoke main grade lamella 21 respectively are equipped with the tertiary lamella of 3 indisputable yokes in this embodiment.
The distance from the outer side of the iron yoke tertiary sheet layer to the outer side of the iron yoke secondary sheet layer is greater than the distance from the inner side of the iron yoke tertiary sheet layer to the inner side of the iron yoke secondary sheet layer, the outer side of the iron yoke tertiary sheet layer refers to one side far away from the stem 1, and the inner side of the iron yoke tertiary sheet layer refers to one side close to the stem 1.
The 2~4 secondary lamella 22 of indisputable yoke that are close to the tertiary lamella of indisputable yoke are indisputable yoke level four lamella, and the height that highly the same and be less than the tertiary lamella of indisputable yoke level four lamella, indisputable yoke primary lamella 21's both sides respectively are equipped with 2 indisputable yoke level four lamella in this embodiment.
The distance from the outer side of the iron yoke four-stage sheet layer to the outer side of the iron yoke three-stage sheet layer is smaller than the distance from the inner side of the iron yoke four-stage sheet layer to the inner side of the iron yoke three-stage sheet layer.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (6)
1. A distribution transformer rectangular yoke iron core, includes stem (1) and yoke (2), its characterized in that: the stem (1) is including stem main level lamella (11), each laminating in proper order has a plurality of stem secondary lamella (12) in the both sides of stem main level lamella (11), the width of stem secondary lamella (12) is degressive in proper order along the direction of keeping away from stem main level lamella (11), iron yoke (2) include iron yoke main level lamella (21) that correspond with stem main level lamella (11) coincidence, the both sides of iron yoke main level lamella (21) respectively laminate in proper order has a plurality of iron yoke secondary lamella (22), iron yoke secondary lamella (22) correspond with stem secondary lamella (12) coincidence one by one, and 2~4 iron yoke secondary lamella (22) that are close to iron yoke main level lamella (21) are iron yoke secondary lamella, and the height of iron yoke secondary lamella all is the same with the height of iron yoke main level lamella (21).
2. A rectangular yoke core for a distribution transformer as claimed in claim 1, wherein: and 2-4 iron yoke secondary sheets (22) close to the iron yoke secondary sheets are iron yoke tertiary sheets, and the height of each iron yoke tertiary sheet is the same and is smaller than that of each iron yoke secondary sheet.
3. A rectangular yoke core for a distribution transformer as claimed in claim 2, wherein: the distance from the outer side of the iron yoke tertiary sheet layer to the outer side of the iron yoke secondary sheet layer is larger than the distance from the inner side end of the iron yoke tertiary sheet layer to the inner side end of the iron yoke secondary sheet layer.
4. A rectangular yoke core for a distribution transformer as claimed in claim 1, wherein: and 2-4 iron yoke secondary laminated layers (22) close to the iron yoke tertiary laminated layers are iron yoke four-stage laminated layers, and the height of each iron yoke four-stage laminated layer is the same and is smaller than that of each iron yoke tertiary laminated layer.
5. The rectangular yoke core for a distribution transformer of claim 4, wherein: the distance from the outer side of the iron yoke four-stage lamination to the outer side of the iron yoke three-stage lamination is smaller than the distance from the inner side of the iron yoke four-stage lamination to the inner side of the iron yoke three-stage lamination.
6. A rectangular yoke core for a distribution transformer as claimed in claim 1, wherein: and 3 iron yoke secondary laminated layers are respectively arranged on two sides of the iron yoke main laminated layer (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122454903.5U CN215868920U (en) | 2021-10-12 | 2021-10-12 | Rectangular yoke core of distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122454903.5U CN215868920U (en) | 2021-10-12 | 2021-10-12 | Rectangular yoke core of distribution transformer |
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| Publication Number | Publication Date |
|---|---|
| CN215868920U true CN215868920U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122454903.5U Active CN215868920U (en) | 2021-10-12 | 2021-10-12 | Rectangular yoke core of distribution transformer |
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| CN (1) | CN215868920U (en) |
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2021
- 2021-10-12 CN CN202122454903.5U patent/CN215868920U/en active Active
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