CN217719246U - Transformer iron core - Google Patents
Transformer iron core Download PDFInfo
- Publication number
- CN217719246U CN217719246U CN202220376651.0U CN202220376651U CN217719246U CN 217719246 U CN217719246 U CN 217719246U CN 202220376651 U CN202220376651 U CN 202220376651U CN 217719246 U CN217719246 U CN 217719246U
- Authority
- CN
- China
- Prior art keywords
- silicon steel
- yoke
- steel sheet
- core
- leg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The utility model discloses a transformer core, including stem group and indisputable yoke group, the stem group includes the same stem of three sectional area, indisputable yoke group includes the same indisputable yoke of two sectional areas, and is three the both ends of stem respectively with two the indisputable yoke is connected and is constituteed unshakable in one's determination, the sectional area of stem is less than the sectional area of indisputable yoke, the cross-section of stem is for imitating circular shape, and the cross-section of indisputable yoke is "D" shape, and the sectional area of stem is less than the sectional area of indisputable yoke to reduce no-load loss, manufacturing cost, guarantee the reliability of transformer operation simultaneously.
Description
Technical Field
The utility model relates to a transformer correlation technique field, more accurate saying so relates to a transformer core.
Background
As the demand for no-load loss and load loss of power transformers, especially distribution transformers, increases, there is a need in the art for improvements to existing transformer structures. The iron core is an important component of a power transformer, the iron core and a coil wound on the iron core form a complete electromagnetic induction system, and the performance of the power transformer depends on the structure and the material of the iron core. In order to reduce the no-load loss of the transformer, the iron core can be made of silicon steel sheets with high permeability and low loss. The factors influencing the load loss of the transformer are more, wherein the most important factor is the resistance of the transformer winding, and the resistance is in direct proportion to the length of the conductor and in inverse proportion to the sectional area of the conductor. The resistance loss in the winding can be reduced in a certain range by increasing the sectional area of the conductor, but the reduction amplitude of the resistance loss is smaller and smaller along with the fact that the sectional area of the conductor is continuously enlarged and approaches to a limit value, and meanwhile, the weight of the iron core silicon steel sheet is also increased, namely, the no-load loss of the transformer is increased, and the magnetic flux density in the iron core can be further reduced, so that the load loss is further increased, the cost of the transformer is finally greatly increased, and the product economy is reduced.
In summary, there is a need in the art for an improved transformer core to reduce the no-load loss, and production cost of the transformer, while improving the reliability of the transformer.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a transformer core, including stem group and indisputable yoke group, stem and indisputable yoke are made by a plurality of silicon steel sheet stacks, and the cross-section of stem is for imitating circular, and the cross-section of indisputable yoke is "D" shape, and the sectional area of stem is less than the sectional area of indisputable yoke to reduce no-load loss, manufacturing cost, guarantee the reliability of transformer operation simultaneously.
In order to achieve the above object, the utility model provides a transformer core, including stem group and indisputable yoke group, the stem group is including the same stem of three sectional area, indisputable yoke group is including two indisputable yokes that the sectional area is the same, and is three the both ends of stem are respectively with two indisputable yoke connection component is unshakable in one's determination, the sectional area of stem is less than the sectional area of indisputable yoke.
Preferably, the cross section of the iron yoke is in a D shape.
Preferably, the core column set comprises a left side column, a center column and a right side column which are arranged in parallel, the iron yoke set comprises an upper iron yoke and a lower iron yoke which are arranged in parallel, two ends of the left side column are respectively connected with the upper iron yoke and one end of the lower iron yoke, two ends of the right side column are respectively connected with the upper iron yoke and the other end of the lower iron yoke, and two ends of the center column are respectively connected with the upper iron yoke and the middle of the lower iron yoke.
Preferably, the left side column, the center column and the right side column have the same cross-sectional area, and the upper iron yoke and the lower iron yoke have the same cross-sectional area.
Preferably, the core column comprises a core column maximum-grade silicon steel sheet and a plurality of core column secondary-grade silicon steel sheets, the cross sections of which are rectangular, and a plurality of core column secondary-grade silicon steel sheets are respectively stacked on two surfaces of the core column maximum-grade silicon steel sheet to form the core column with the pseudo-circular cross section.
Preferably, the iron yoke comprises a maximum-grade silicon steel sheet of the iron yoke and a plurality of secondary silicon steel sheets of the iron yoke, the sections of which are rectangular, the two surfaces of the maximum-grade silicon steel sheet of the iron yoke are respectively laminated with the plurality of secondary silicon steel sheets of the iron yoke, and the iron yoke with the D-shaped non-circular section is formed.
Preferably, the stacking thicknesses of the core column maximum-grade silicon steel sheet and the iron yoke maximum-grade silicon steel sheet are the same, and the stacking thicknesses of the core column secondary silicon steel sheet and the iron yoke secondary silicon steel sheet of corresponding levels are the same; the sheet width of the iron yoke maximum-grade silicon steel sheet is not less than that of the core column maximum-grade silicon steel sheet, and the sheet width of the iron yoke secondary silicon steel sheet of the corresponding level is greater than that of the core column secondary silicon steel sheet.
Preferably, the sheet width of the maximum-grade silicon steel sheet of the iron yoke is equal to the sheet width of the maximum-grade silicon steel sheet of the mandrel.
Compared with the prior art, the utility model discloses a transformer core's advantage lies in: the iron yoke of the iron core of the transformer is of a D-shaped non-circular structure, so that the weight of the iron core is reduced, and the no-load loss of the transformer is reduced; the sectional area of the core column is smaller than that of the iron yoke, so that the consumption of copper materials is reduced, and the cost is reduced; the sectional area of the iron yoke is relatively large, the magnetic flux density is low, the unit loss is low, and the no-load loss in the iron yoke is further reduced; the sheet width of the silicon steel sheet of the iron yoke is larger, so that the contact area of the iron yoke and the clamping piece can be effectively increased, and the operation reliability of the transformer is improved; the transformer core is simple in structure and convenient to process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a transformer core according to the present invention.
Fig. 2 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 1.
As shown in fig. 3, which is a cross-sectional view of B-B in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.
As shown in fig. 1, a transformer core according to the present application includes a core-leg set 10 and an iron yoke set 20, where the core-leg set 10 includes three core legs having the same cross-sectional area, the iron yoke set 20 includes two iron yokes having the same cross-sectional area, and two ends of the three core legs are respectively connected with the two iron yokes to form the core. The core column and the iron yoke are made by stacking a plurality of silicon steel sheets with different sheet widths, the sectional area of the core column is smaller than that of the iron yoke, and the magnetic flux density of the core column is larger than that of the iron yoke. The magnetic flux density of the iron yoke is small, and the no-load loss of the iron yoke is small, so that the increased part of the no-load loss of the core limb can be compensated, and the no-load loss of the iron core is ensured to meet the requirement. In addition, the sectional area of the core column is relatively smaller, the average radius of the winding on the iron core is smaller, and the conductor length of the winding is in direct proportion to the average radius of the winding, so that the conductor length is smaller, the direct-current resistance of the winding is smaller, the conductor length is smaller under the condition of ensuring the same load loss, the using amount of copper materials is smaller, and the cost is saved.
Specifically, stem group 10 includes parallel arrangement's left side post 11, center pillar 12 and right post 13, and yoke group 20 includes parallel arrangement's last yoke 21 and lower yoke 22, and the left side post 11 both ends are connected with the one end of last yoke 21 and lower yoke 22 respectively, and the both ends of right post 13 are connected with the other end of last yoke 21 and lower yoke 22 respectively, and the both ends of center pillar 12 are connected with the middle part of last yoke 21 and lower yoke 22 respectively. The left side column 11, the center column 12 and the right side column 13 have the same cross-sectional area, and the upper iron yoke 21 and the lower iron yoke 22 have the same cross-sectional area.
Referring to fig. 2, the stem comprises a maximum-grade silicon steel sheet 131 and a plurality of secondary silicon steel sheets 132, both of which have rectangular cross-sections, and a plurality of secondary silicon steel sheets 132 are stacked on both sides of the maximum-grade silicon steel sheet 131 to form a pseudo-circular cross-section stem.
Referring to fig. 3, the iron yoke includes a maximum-grade silicon steel sheet 211 and a plurality of secondary silicon steel sheets 212, both sides of the maximum-grade silicon steel sheet 211 are stacked with the plurality of secondary silicon steel sheets 212, to form an iron yoke with a non-circular D-shaped cross section. The cross section of the iron yoke is in a D shape, so that the weight of the iron yoke can be reduced, the overall weight of the iron core is further reduced, and the no-load loss of the transformer can be further reduced because the no-load loss is in direct proportion to the weight of the iron core.
Specifically, the stacking thickness of the core column maximum-grade silicon steel sheet 131 and the iron yoke maximum-grade silicon steel sheet 211 is the same, the stacking thickness of the core column secondary silicon steel sheet 132 and the iron yoke secondary silicon steel sheet 212 of the corresponding level is the same, the sheet width of the iron yoke maximum-grade silicon steel sheet 211 is not less than the sheet width of the core column maximum-grade silicon steel sheet 131, and the sheet width of the iron yoke secondary silicon steel sheet 212 of the corresponding level is greater than the sheet width of the core column secondary silicon steel sheet 132, so that the sectional area of the core column is smaller than the sectional area of the iron yoke. For the purpose of easy processing, it is preferable that the sheet width of the iron yoke maximum-grade silicon steel sheet 211 is equal to that of the core column maximum-grade silicon steel sheet 131.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The transformer iron core is characterized by comprising a core column group and an iron yoke group, wherein the core column group comprises three core columns with the same sectional areas, the iron yoke group comprises two iron yokes with the same sectional areas, the two ends of each core column are connected with the two iron yokes respectively to form an iron core, and the sectional areas of the core columns are smaller than the sectional areas of the iron yokes.
2. A transformer core according to claim 1, charac teri sed in that said yoke has a "D" shaped cross-section.
3. The transformer core according to claim 1, wherein the core-leg group includes a left-side leg, a center leg, and a right-side leg arranged in parallel, the yoke group includes an upper yoke and a lower yoke arranged in parallel, two ends of the left-side leg are connected to one ends of the upper yoke and the lower yoke, respectively, two ends of the right-side leg are connected to the other ends of the upper yoke and the lower yoke, respectively, and two ends of the center leg are connected to middle portions of the upper yoke and the lower yoke, respectively.
4. A transformer core as recited by claim 3, wherein said left leg, said center leg and said right leg have the same cross-sectional area, and said upper yoke and said lower yoke have the same cross-sectional area.
5. A transformer core as recited by claim 1, wherein said leg comprises a leg maximum-grade silicon steel sheet and a plurality of leg secondary-grade silicon steel sheets, both sides of said leg maximum-grade silicon steel sheet being rectangular in cross-section, said leg secondary-grade silicon steel sheets being stacked on both sides of said leg maximum-grade silicon steel sheet, respectively, to form said leg having a pseudo-circular cross-section.
6. The transformer core according to claim 5, wherein the iron yoke comprises a maximum-grade silicon steel sheet and a plurality of secondary-grade silicon steel sheets, both sides of the maximum-grade silicon steel sheet are respectively stacked with a plurality of secondary-grade silicon steel sheets to form the iron yoke with a D-shaped non-circular cross section.
7. The transformer core according to claim 6, wherein a lamination thickness of the core column maximum-grade silicon steel sheet and the yoke maximum-grade silicon steel sheet is the same, and a lamination thickness of the core column secondary silicon steel sheet and the yoke secondary silicon steel sheet of a corresponding level is the same; the sheet width of the iron yoke maximum-grade silicon steel sheet is not less than that of the mandrel column maximum-grade silicon steel sheet, and the sheet width of the iron yoke secondary silicon steel sheet of the corresponding level is greater than that of the mandrel column secondary silicon steel sheet.
8. A transformer core according to claim 7, charac teri sed in that said yoke maximum grade silicon steel sheets have a sheet width equal to said core limb maximum grade silicon steel sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220376651.0U CN217719246U (en) | 2022-02-23 | 2022-02-23 | Transformer iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220376651.0U CN217719246U (en) | 2022-02-23 | 2022-02-23 | Transformer iron core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217719246U true CN217719246U (en) | 2022-11-01 |
Family
ID=83786612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220376651.0U Active CN217719246U (en) | 2022-02-23 | 2022-02-23 | Transformer iron core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217719246U (en) |
-
2022
- 2022-02-23 CN CN202220376651.0U patent/CN217719246U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH069176B2 (en) | Silicon steel-amorphous steel composite iron core for transformer | |
| CN107658110B (en) | Iron core structure for improving iron core filling rate and shearing and assembling method thereof | |
| CN201181621Y (en) | Low-loss iron core reactor | |
| CN217719246U (en) | Transformer iron core | |
| US6816054B2 (en) | Silicon steel core for transformers or choke coils | |
| CN212230212U (en) | Slotting laminated core structure of high-voltage transformer | |
| CN205789424U (en) | A kind of electrical transformer cores return yoke structure | |
| CN108257767A (en) | A kind of transformer iron-core structure and power transformer | |
| CN211088056U (en) | Transformer clamping assembly | |
| CN211045222U (en) | Triangular opening iron core structure | |
| CN209626001U (en) | Loop product core construction | |
| JPS57143807A (en) | Iron core for stationary electrical equipment | |
| CN218038793U (en) | Iron core and yoke plate structure of power transformer | |
| CN221573649U (en) | Transformer core convenient to assemble silicon steel sheet | |
| CN204834290U (en) | Transformer core for photovoltaic power generation | |
| CN218241531U (en) | Variable cross-section iron core structure and distribution transformer | |
| CN209766211U (en) | Inductor with multilayer distributed air gaps | |
| CN206480480U (en) | A kind of transformer iron-core structure | |
| CN220155340U (en) | Stacked transformer core | |
| CN211016723U (en) | Traction transformer body structure and traction transformer | |
| CN219017405U (en) | Dry-type transformer core structure capable of reducing no-load loss | |
| CN210245197U (en) | DUI magnetic element | |
| CN209912693U (en) | Novel stacked transformer iron core | |
| CN210015762U (en) | Iron yoke, transformer iron core and transformer | |
| CN216287904U (en) | Power-saving and energy-saving transformer iron core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |