CN202749198U - Transformer iron core with stepping structure - Google Patents
Transformer iron core with stepping structure Download PDFInfo
- Publication number
- CN202749198U CN202749198U CN 201220496707 CN201220496707U CN202749198U CN 202749198 U CN202749198 U CN 202749198U CN 201220496707 CN201220496707 CN 201220496707 CN 201220496707 U CN201220496707 U CN 201220496707U CN 202749198 U CN202749198 U CN 202749198U
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- iron core
- lamination
- iron
- overlapping
- yoke
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Abstract
A transformer iron core with a stepping structure comprises at least one group of overlapping layers in an overlapping manner, wherein each overlapping layer includes six iron core plates in the overlapping manner; the iron core plate includes an upper iron yoke, a lower iron yoke and an iron core column; both ends of the iron core column are respectively connected with the upper iron yoke and the lower iron yoke in a specific manner; all the iron core plates transversely overlap gradually in a staggered manner along the same direction; and the two adjacent iron core plates are transversely staggered by a distance of 2mm or more. The transformer iron core provided by the utility model has a special six-stage stepping multi-stage overlapping structure so as to effectively reduce an air gap between the iron core column and each iron yoke during overlapping, thereby reducing the magnetic flux distortion, effectively reducing the no-load current, remarkably lowering the noise level and reducing the heat generation of the iron core.
Description
Technical field
The utility model relates to a kind of transformer core, particularly a kind of transformer core of stepping structure.
Background technology
Transformer (Transformer) is to utilize the principle of electromagnetic induction to change the device of alternating voltage, can carry out voltage transformation, current transformation, impedance transformation, isolation, voltage stabilizing (magnetic saturation transformer) etc.Traditional industry and civilian transformer generally all are to be formed by the solenoid coiling on iron core, and iron core is a vitals that consists of the transformer work system.Traditional transformer core is to adopt the manufacturing of three grades of seam technique to form silicon steel sheet, the iron core that adopts this technology to be overlapped into, the magnetic line of force is at the silicon steel sheet on seam crossing transverse crossing next door, and do not pass air gap, only the lamination adjacent is saturated, and magnetic flux is just by air gap, and larger air gap causes higher magnetic flux distortion, cause that no-load loss is large, no-load current is large, meanwhile just can produce larger system works noise.
The utility model content
Technical problem to be solved in the utility model provides a kind of transformer core of stepping structure, the air gap that produces in the time of can reducing iron core column and be connected with the Double layer iron yoke, thus so that the magnetic flux distortion reduces, effectively reduce no-load current and noise level.
For solving the problems of the technologies described above, the utility model provides a kind of transformer core of stepping structure, comprise that at least one group of bonding layer overlap joint consists of, bonding layer is formed by several lamination overlap joints, described lamination includes upper and lower iron yoke and iron core column, described iron core column two ends adopt specific connected mode to be connected with upper and lower iron yoke respectively, described bonding layer includes six layers of lamination and mutually overlaps, each lamination overlap joint that laterally staggers one by one in the same direction, and adjacent lamination lateral alternate distance 2mm at least.
Described specific connected mode is the mitered mode.
Be equipped with location hole on the described upper and lower iron yoke.
The big or small identical prominent recessed structure of described location hole for adopting the impact mode to form.
Described lamination material is the cold rolling silicon steel sheet of high magnetic conduction, adopts this material can give full play of material, and precision is high, stay-in-grade characteristics.
Good effect of the present utility model is: the transformer core of a kind of stepping structure of the present utility model, six grades of multistage bridging arrangements of stepping that it is special, air gap in the time of effectively reducing the staggered overlap joint of core limb and iron yoke, thereby so that the magnetic flux distortion reduces, effectively reduce no-load current, noise level also decreases drastically simultaneously, and has reduced the fever phenomenon of iron core.
Description of drawings
Fig. 1 is the transformer iron-core structure schematic diagram of a kind of stepping structure of the utility model
Fig. 2 is that put the horizontal part of transformer core bonding layer of a kind of stepping structure of the utility model
Large figure
Among the figure: stem stem in 101., 102. left stem stems, 103. right stem stems, 104. location holes, 105. lower yokes, 106. upper yokes, 107. laminations, 201. bonding layers.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is elaborated.
With reference to Figure 1 and Figure 2, the transformer core of a kind of stepping structure of the utility model preferred embodiment, comprise that at least one group of bonding layer 201 overlap joints consist of, bonding layer 201 is formed by several lamination 107 overlap joints, described lamination 107 includes upper yoke 106, lower yoke 105 and iron core column, described iron core column comprises left stem stem 102, right stem stem 103 and middle stem stem 101, described iron core column two ends respectively with upper yoke 106, lower yoke 105 adopts specific connected mode to connect, described bonding layer 201 includes six layers of lamination and mutually overlaps, each lamination overlap joint that laterally staggers one by one in the same direction, and adjacent lamination lateral alternate distance 2mm at least.
Described specific connected mode is the mitered mode.
Be equipped with location hole 104 on described upper yoke 106, the lower yoke 105, the big or small identical prominent recessed structure of described location hole 104 for adopting the impact mode to form.By the setting of location hole 104, can guarantee when mounted equidistantly between the adjacent lamination to stagger one by one, so that simple installation, the accuracy that staggers between having increased layer by layer.
Described lamination 107 materials are the cold rolling silicon steel sheet of high magnetic conduction, adopt this material can give full play of material, and precision is high, stay-in-grade characteristics.Adopt the method for six grades of multistage overlap joints of stepping, the seam of adjacent lamination is lateral alternate one by one, adopt the mitered mode to be connected between core limb and upper yoke 106, the lower yoke 105, it is longer to connect the slit than direct mode, can effectively increase area of section, be conducive to reduce magnetic density, reduce transformer overall work noise.Such as: 400KVA S11 product, the GB noise is defined as 53dB, and the value of evaluation is 41dB through ABB authoritative institution, is lower than national criteria for noise, and can effectively lack the fever phenomenon of iron core.
Above-described only is preferred embodiment of the present utility model; institute is understood that; the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; and be not used in and limit protection range of the present utility model; all any modifications of within thought of the present utility model and principle, making, be equal to replacement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. the transformer core of a stepping structure, comprise that at least one group of bonding layer overlap joint consists of, bonding layer is formed by several lamination overlap joints, described lamination includes upper and lower iron yoke and core limb, described core limb two ends adopt specific connected mode to be connected with upper and lower iron yoke respectively, it is characterized in that: described bonding layer comprises that six layers of lamination overlap mutually, each lamination overlap joint that laterally staggers one by one in the same direction, and adjacent lamination lateral alternate distance 2mm at least.
2. the transformer core of a kind of stepping structure according to claim 1, it is characterized in that: described specific connected mode is the mitered mode.
3. the transformer core of a kind of stepping structure according to claim 2 is characterized in that: be equipped with location hole on the described upper and lower iron yoke.
4. the transformer core of a kind of stepping structure according to claim 3 is characterized in that: the big or small identical prominent recessed structure of described location hole for adopting the impact mode to form.
5. the transformer core of a kind of stepping structure according to claim 4, it is characterized in that: described lamination material is the cold rolling silicon steel sheet of high magnetic conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496707 CN202749198U (en) | 2012-09-27 | 2012-09-27 | Transformer iron core with stepping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496707 CN202749198U (en) | 2012-09-27 | 2012-09-27 | Transformer iron core with stepping structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202749198U true CN202749198U (en) | 2013-02-20 |
Family
ID=47708560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220496707 Expired - Lifetime CN202749198U (en) | 2012-09-27 | 2012-09-27 | Transformer iron core with stepping structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202749198U (en) |
-
2012
- 2012-09-27 CN CN 201220496707 patent/CN202749198U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |
|
| CX01 | Expiry of patent term |