CN102360771A - Planar coiled iron core for three-phase transformer - Google Patents
Planar coiled iron core for three-phase transformer Download PDFInfo
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- CN102360771A CN102360771A CN2011102009562A CN201110200956A CN102360771A CN 102360771 A CN102360771 A CN 102360771A CN 2011102009562 A CN2011102009562 A CN 2011102009562A CN 201110200956 A CN201110200956 A CN 201110200956A CN 102360771 A CN102360771 A CN 102360771A
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Abstract
The invention discloses a planar coiled iron core for a three-phase transformer. The planar coiled iron core comprises coiled iron core frames which are distributed on a plane, form a three-phase magnetic circuit and is formed by winding steel belts; the planar coiled iron core for the three-phase transformer is characterized by consisting of five coiled iron cores; and one outer frame is enclosed outside two middle large frames, and two sides of the outer frames are provided with a small frame respectively. The five-frame five-column planar coiled iron core has lower iron core additional noload loss coefficients than a four-frame five-column planar coiled iron core due to the adoption of the outer frame; and compared with a three-frame planar coiled iron core, the five-frame five-column planar coiled iron core does not have advantages if only the iron core additional noload loss coefficients are considered, and the five-frame five-column planar coiled iron core has better comprehensive benefits if material loss is compressively considered, because the material loss accounts for larger comprehensive cost in the design of the whole transformer.
Description
Technical field
The present invention relates to the power transformer technical field, the plane volume that especially relates to a kind of three-phase transformer is unshakable in one's determination.
Background technology
In three-phase power transformer, iron core is the basic element of character of electromagnetic induction.Core Structure in Three-Phase Transformers has: plane laminated core, three-phase three frame planes are rolled up unshakable in one's determination (as shown in Figure 1; Surround a housing 2a by the big frame 1a of two merging is outer), three-phase four frames five post planes volume is unshakable in one's determination (as shown in Figure 2; Big frame 1b both sides by two merging merge a little frame 3b more separately) and triangle volume iron core, above structure respectively has pluses and minuses.It is many that the material consumption of plane laminated core is rolled up iron core than the plane, but additional no-load loss coefficient unshakable in one's determination is lower.The material consumption unshakable in one's determination of triangle volume is minimum, but additional no-load loss coefficient unshakable in one's determination also is maximum, and manufacturing process is comparatively complicated.
The three-phase Wound iron-core transformer is in operation, because the magnetic flux vector figure in two attached columns of each core limb is 60 °, makes the magnetic flux size in two attached columns often different, also occurs the opposite situation of flow direction sometimes.Between two frames that contact with each other of same core limb, always some magnetic flux passes through to the low frame of magnetic flux density from the high frame of magnetic flux density.When the flow direction between two frames is opposite, the magnetic flux of the different directions part of can cancelling out each other in the contact-making surface, thus reduce additional no-load loss coefficient unshakable in one's determination, reduce transformer core no-load loss.In the volume core construction, because contact-making surface is more between two frames of three-phase three frame planes volumes same core limb unshakable in one's determination, so its additional no-load loss coefficient unshakable in one's determination is also for lower, and transformer core no-load loss is less relatively.Yet unshakable in one's determination with respect to three-phase four frames five post planes volume, the material consumption of three-phase three frame planes volume iron core is also more relatively.So in the iron core of power transformer designed, the material consumption that how to reduce additional no-load loss coefficient unshakable in one's determination and saving iron core was difficult to both and takes into account.
Summary of the invention
The technical problem that the present invention will solve provides a kind of when saving core material and consume, and the plane volume of three-phase transformer with the additional no-load loss coefficient of lower iron core is unshakable in one's determination.
The technical scheme that adopts for solving the problems of the technologies described above: a kind of three-phase transformer plane volume is unshakable in one's determination; Comprise be plane distribution, that constitute three-phase magnetic circuit, by the volume iron core frame of steel coil strip coiled; It is characterized in that: said three-phase transformer plane volume is unshakable in one's determination to be made up of five volume iron core frames; Housing of the outer encirclement of two big frames wherein respectively is provided with a little frame in the both sides of housing.
Wherein said two big frames have same specification, and said housing is the same with the specification in the cross section of big frame with the cross section that little frame merges formation.
Its optimum scheme is that housing outermost layer steel band length equals the outermost layer steel band length sum of two little frames.
Can be preferably, said steel band is the non-crystaline amorphous metal steel band.The non-crystaline amorphous metal steel band has high saturated magnetic induction and low-loss characteristics, can effectively reduce the no-load loss of Amorphous Alloy Core Transformer, than the no-load loss decline about 70% of traditional silicon steel core transformer.
Three-phase transformer plane volume for traditional is unshakable in one's determination; In actual design; The internal layer steel band length sum that the outer steel band length of the housing that three frame planes volumes is unshakable in one's determination can be rolled up the little frame of both sides unshakable in one's determination greater than three-phase four frames five post planes, and the former internal layer steel band length can be less than the latter's outer steel band length sum.
In the present invention, it is to be merged by five frames to form, and according to traditional naming method, it is unshakable in one's determination just to be called three-phase five frames five post planes volume to it.Obviously, the present invention's five frames five post planes volume housing unshakable in one's determination is equivalent to the interior layer segment of three frame planes volume housing unshakable in one's determination, and the little frame of its both sides then is equivalent to the interior layer segment of four frames, five post planes volume little frame unshakable in one's determination.
It is unshakable in one's determination to contrast three frame planes volume; The present invention's five frames five post planes volumes is unshakable in one's determination to be equivalent to increase the interior layer segment that little frame unshakable in one's determination is rolled up on four frames, five post planes; And reduced the outer layer segment of three frame planes volume housing unshakable in one's determination; Because the internal layer steel band length sum that the outer steel band length of the housing that three frame planes volume is unshakable in one's determination is rolled up the little frame of both sides unshakable in one's determination greater than three-phase four frames five post planes, the present invention's five frames five post planes volume is unshakable in one's determination thus will save material consumption than three frame planes volume iron core.
It is unshakable in one's determination to contrast four frames, five post planes volume; The present invention's five frames five post planes volume interior layer segment that has been equivalent to increase the housing of three frame planes volume iron cores unshakable in one's determination; And reduced the outer layer segment of four frames five post planes volume little frame unshakable in one's determination; Because the outer steel band length sum that the internal layer steel band length of the housing that three frame planes volume is unshakable in one's determination is rolled up the little frame of both sides unshakable in one's determination less than four frames, five post planes, volume iron core in the present invention's five frames five post planes also will be saved material consumption than four frames, five post planes volume iron core thus.
In like manner; For the triangle three dimensional wound core; Also can the outer layer segment of three big frames respectively be formed a little frame respectively at both sides; Also can reduce the material consumption of triangle three dimensional wound core, and when the outermost layer steel band length sum of two little frames equals big frame outermost layer steel band length, be to save material most.
Volume existence owing to housing unshakable in one's determination in the present invention's five frames five post planes contrasts four frames, five post planes volume iron core and also has the additional no-load loss coefficient of lower iron core; It is unshakable in one's determination to contrast three frame planes volume; If singly consider additional no-load loss coefficient unshakable in one's determination; Volumes iron core in the present invention's five frames five post planes does not have advantage, but the compound material loss considers, and then has more excellent comprehensive benefit; Because spillage of material in the design of whole transformer, has occupied bigger integrated cost.
Description of drawings
Fig. 1 is traditional three-phase three frame planes volume structural representation unshakable in one's determination;
Fig. 2 is traditional three-phase four frames five post planes volume structural representation unshakable in one's determination;
Fig. 3 is three-phase five frames of the present invention five post planes volume structural representation unshakable in one's determination.
Embodiment
As shown in Figure 3; A kind of three-phase five frames five post planes volume is unshakable in one's determination; Comprise five volume iron core frames by non-crystaline amorphous metal steel coil strip coiled; Two big frame 1c with same specification by wherein combine, housing 2c of outer again encirclement, and the both sides of housing 2c respectively merge a little frame 3c then; Wherein housing 2c is the same with the specification in the cross section of big frame 1c with the cross section that little frame 3c merging forms, and has so just formed to be three-phase five frames five post planes plane distribution, that constitute three-phase transformer magnetic circuit volume iron core.As most preferred embodiment of the present invention, wherein housing 2c outermost layer steel band 2c1 length equals the outermost layer steel band 3c1 length sum of two little frame 3c, the spillage of material that can at utmost save the non-crystaline amorphous metal steel band like this.
Claims (4)
1. a three-phase transformer plane volume is unshakable in one's determination; Comprise be plane distribution, that constitute three-phase magnetic circuit, by the volume iron core frame of steel coil strip coiled; It is characterized in that: said three-phase transformer plane volume is unshakable in one's determination to be made up of five volume iron core frames; Housing of the outer encirclement of two big frames wherein respectively is provided with a little frame in the both sides of housing.
2. a kind of three-phase transformer volume as claimed in claim 1 is unshakable in one's determination, and it is characterized in that: said two big frames have same specification, and said housing is the same with the specification in the cross section of big frame with the cross section that little frame merges formation.
3. a kind of three-phase transformer as claimed in claim 2 plane volume is unshakable in one's determination, and it is characterized in that: wherein housing outermost layer steel band length equals the outermost layer steel band length sum of two little frames.
4. unshakable in one's determination like the described a kind of three-phase transformer of claim 1-3 plane volume, it is characterized in that: said steel band is the non-crystaline amorphous metal steel band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102009562A CN102360771A (en) | 2011-07-18 | 2011-07-18 | Planar coiled iron core for three-phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102009562A CN102360771A (en) | 2011-07-18 | 2011-07-18 | Planar coiled iron core for three-phase transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102360771A true CN102360771A (en) | 2012-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102009562A Pending CN102360771A (en) | 2011-07-18 | 2011-07-18 | Planar coiled iron core for three-phase transformer |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005136059A (en) * | 2003-10-29 | 2005-05-26 | Toshiba Corp | Transformer and wound core of the transformer |
| CN200941330Y (en) * | 2006-06-28 | 2007-08-29 | 王淑琴 | Three-phase seven-pillar non-crystall alloy transformer |
| CN202145410U (en) * | 2011-07-18 | 2012-02-15 | 佛山安沛变压器有限公司 | Plane wound core of three-phase transformer |
-
2011
- 2011-07-18 CN CN2011102009562A patent/CN102360771A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005136059A (en) * | 2003-10-29 | 2005-05-26 | Toshiba Corp | Transformer and wound core of the transformer |
| CN200941330Y (en) * | 2006-06-28 | 2007-08-29 | 王淑琴 | Three-phase seven-pillar non-crystall alloy transformer |
| CN202145410U (en) * | 2011-07-18 | 2012-02-15 | 佛山安沛变压器有限公司 | Plane wound core of three-phase transformer |
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Application publication date: 20120222 |