CN101620923B - Method for replacing double/quadruple helix coil of transformer with long-circle section - Google Patents
Method for replacing double/quadruple helix coil of transformer with long-circle section Download PDFInfo
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- CN101620923B CN101620923B CN2009100994567A CN200910099456A CN101620923B CN 101620923 B CN101620923 B CN 101620923B CN 2009100994567 A CN2009100994567 A CN 2009100994567A CN 200910099456 A CN200910099456 A CN 200910099456A CN 101620923 B CN101620923 B CN 101620923B
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Abstract
The invention discloses a method for replacing a double/quadruple helix coil of a transformer with a long-circle section, comprising a double helix and a quadruple helix. The replacing method of the double helix comprises the following steps: (1) a plurality of leads wound in parallel are axially divided into two groups of line cakes, and the leads of each group of the line cake are overlapped together to wind along an iron core with the long-circle section; (2) the leads of two groups of line cakes replace once when winding at least one circle, and the replacement is evenly carried out on two semi-circular parts at the section of the coil at interval; and (3) the arrangement position of the leads of each group of the line cake is same as the original arrangement position after the times of the replacement same as the total number of the parallel wound leads are carried out so as to axially lead out two groups of the line cakes. The replacing method of the quadruple helix comprises a step of replacing according to the replacing method of the double helix. A crosswise size in a direction of a short axle of the coil can be completely controlled without bouncing so as to completely replace, the lengths of the parallel-connected leads are same in the same magnetic field, no circulating current is generated among the leads, and the coil has no additional loss due to the replacement, thereby the invention ensures favorable electric performance of the transformer.
Description
Technical field
The present invention relates to power transformation or power distribution equipment technical field, relate in particular to the interchanging method of the oval type cross section transformer coil of a kind of double helix or four spirals.
Background technology
In power transformation or power distribution equipment technical field, according to the size of transformer capacity, its inner loop construction is also different.In medium and small capacity transformer, its loop construction adopts layer coil usually, generally it is divided into single coiling and several paralleled conductor, the coil of single coiling is applicable to little electric current product, several paralleled conductor is applicable to big electric current product, but because since the width of cloth to and can not surpass 2 around radical, cause cause in some big electric current products axially and around lead too much, a lot of for this reason products improve.Disclose a kind of layer coil interchanging method of radial several paralleled conductor in the Chinese invention patent 200510123017.7, processing step is divided into the lead with several paralleled conductor, axially is divided into two groups of A, B, radially can many stacks coiling; In each layer, two groups of leads carry out repeatedly coordinated transposition; The number of times of every layer of transposition with and identical around total radical of lead, the number of turn that is spaced apart every layer of coiling of two transpositions is divided by the radical of lead; After every layer of coiling finished, put stay or oil duct corrugation and rise one deck under the layer coiling, the coiling of following one deck is identical with preceding one deck.This method solves the problem that exists in the medium and small capacity transformer, but and in not being suitable for, the transformer of large-scale capacity.
At present, large-scale capacity transformer, its interior loop version is double helix or four spiral forms.The double helix parallel conducting wire has 12, and by axial 2 groups of line cakes, the width of cloth is arranged coiling in parallel to 6; Four spiral parallel conducting wires have 24 (32) roots, and by axial 4 groups of line cakes, the width of cloth is arranged coiling in parallel to 6 (8) roots.When coil width of cloth guiding line radical in parallel surpasses 2, because the width of cloth of coil is to the vertical direction that is in the winding stray field, magnetic field can induce different voltage in different leads, therefore need between the lead of parallel connection, replace at the width of cloth, the purpose of transposition is in order to allow parallel conducting wire that identical length is arranged and to be in the identical magnetic field, not produce circulating current between lead, avoiding increasing supplementary load loss.
In the past, the coil section of the transformer of large-scale capacity is circular, undertaken by the angle five equilibrium during transposition, the coil outer diameter size can be controlled fully like this, but this transformer cost is too high, consume silicon steel disc, copper material be severity too.Subsequently, the coil section of large-scale capacity transformer is improved to oval type, can reduce the manufacturing cost of this type of transformer like this, but can't solve the transposition problem of its coil, uncontrollable its coil short-axis direction width of cloth to physical dimension, so interchanging method can't be made this product routinely.
Summary of the invention
The present invention proposes the interchanging method of a kind of pair/oval type of four spirals cross section transformer coil, thereby effectively solved the transposition problem of oval type cross section coil and its coil short-axis direction width of cloth to the overproof problem of physical dimension, realizing also having reduced manufacturing cost when electric property requires.
The interchanging method of the oval type of a kind of double helix cross section coil, the steps include: (1) with some and around lead, axially be divided into two groups of line cakes, every group of line cake lead is overlapping to be the iron core winding of oval type together along the cross section; Carry out once evenly coordinated transposition during at least one circle of (2) two groups of line cake leads coiling, transposition is evenly carried out at interval in two semi-circular portions of coil section; (3) carry out with and around the total radical of lead mutually after the transposition of homogeneous, the arrangement position of every group of line cake lead is identical with the original alignment position, from axially two groups of line cakes being drawn.
The length of side of the straight line portion in the oval type cross section of described coil and the ratio of the ratio of the radius of semi-circular portions are smaller or equal to 1 and be not equal to 0, and this moment, coil winding was convenient, and economy is bigger.
Step (1) described with some and around lead, wherein some and around lead be generally 12 leads and around.
Carrying out once evenly during at least one circle of the two groups of line cake leads coiling described in the step (2), coordinated transposition can be that every coiling one circle once replaces, can be that every interval one circle or two circles once replace, also can be that every coiling one circle once replaces, replace in per four transposition backs circle at interval next time, the number of turn that meets by coiling gets final product in the requirement of the width of cloth basic uniformity on face again; Described transposition is evenly carried out at interval in two semi-circular portions of coil section, can be and around lead when being 12, carry out in the general 45 degree radian sections at interval of semi-circular portions transposition.
Carrying out described in the step (3) with and around coiling total radical transposition of homogeneous mutually, be generally 12 leads and around, promptly carry out 12 transpositions, the arrangement position of the every group of line cake coiling in 12 transposition backs is just identical with the original alignment position.
The interchanging method of the oval type of a kind of four spirals cross section transformer coil, the steps include: (1) with some and around lead, axially be divided into four groups of line cakes, every group of line cake lead is overlapping to be the iron core winding of oval type together along the cross section; (2) four groups of line cake leads are further divided into two transposition units by per two groups, carry out once evenly coordinated transposition during at least one circle of each transposition unit coiling, transposition is evenly carried out at interval in two semi-circular portions of coil section; (3) carry out with and around the total radical of lead mutually after the transposition of homogeneous, the arrangement position of every group of line cake lead is identical with the original alignment position, from axially four groups of line cakes being drawn.
Described in the step (1) with some and around lead, wherein some and around lead be generally 24 leads and around or 32 leads and around.
Carrying out once evenly during at least one circle of the four groups of line cake leads coiling described in the step (2), coordinated transposition can be that every coiling one circle once replaces, can be that every interval one circle or two circles once replace, also can be that every coiling one circle once replaces, replace in per four transposition backs circle at interval next time, the number of turn that meets by coiling gets final product in the requirement of the width of cloth basic uniformity on face again; Described transposition is evenly carried out at interval in two semi-circular portions of coil section, can be to carry out in the general 45 degree radian sections at interval of semi-circular portions transposition.
Carrying out described in the step (3) with and around coiling total radical transposition of homogeneous mutually, be generally 24 leads and around or 32 leads and around, promptly carry out 24 times or 32 times transposition, when 24 leads and around coil carry out 24 transpositions or 32 leads and around coil to carry out the arrangement position that the every group of line cake in 32 transposition backs wind the line just identical with the original alignment position.
Promptly when the coil of coiling is the oval type of four spirals cross section coil, the oval type of four spirals cross section coil is replaced by two the oval type of double helix cross section coils.
The present invention is in the evenly transposition at interval of two semi-circular portions of coil section, straight line portion does not replace, so both fully the control coil short-axis direction width of cloth to physical dimension, guarantee that the coil short-axis direction width of cloth is to not upspringing, having accomplished again that fully transposition has guaranteed that parallel conducting wire has identical length and makes parallel conducting wire be in the identical magnetic field, do not produce circulating current between lead, coil does not increase supplementary load loss because of transposition, thereby guaranteed the good electric property of this type of transformer fully, and its manufacturing cost has lowered 10%～15%.
Description of drawings
Fig. 1 is double-spiral coil transposition expanded view of the present invention;
Fig. 2 is the schematic diagram of Fig. 1 coil width of cloth to the transposition position in cross section;
Fig. 3 is a double-spiral coil lead initial condition schematic diagram of the present invention;
Fig. 4 is the double-spiral coil lead of the present invention schematic diagram that once replaces;
Fig. 5 is double-spiral coil lead secondary transposition schematic diagram of the present invention;
Fig. 6 is three transpositions of double-spiral coil lead of the present invention schematic diagram;
Fig. 7 is four transpositions of double-spiral coil lead of the present invention schematic diagram;
Fig. 8 is five transpositions of double-spiral coil lead of the present invention schematic diagram;
Fig. 9 is six transpositions of double-spiral coil lead of the present invention schematic diagram;
Figure 10 is seven transpositions of double-spiral coil lead of the present invention schematic diagram;
Figure 11 is eight transpositions of double-spiral coil lead of the present invention schematic diagram;
Figure 12 is nine transpositions of double-spiral coil lead of the present invention schematic diagram;
Figure 13 is ten transpositions of double-spiral coil lead of the present invention schematic diagram;
Figure 14 is the double-spiral coil lead ten of the present invention schematic diagram that once replaces;
Figure 15 is double-spiral coil lead ten secondaries transposition schematic diagram of the present invention.
Embodiment
Referring to accompanying drawing 1～15, the oval type of a kind of double helix cross section transformer coil, the lead of coiling in parallel has 12, by axial 2 groups, the width of cloth is arranged coiling in parallel to 6, then the label of 12 leads is respectively 1.2.3.4.5.6.7.8.9.10.11.12, and the cross section of the coil that turns to along the oval sections heart is oval type, and the ratio of the length of the straight line portion in the oval type of coil cross section and the length ratio of semi-circular portions radius is 1.Its transposition step is as follows:
(1) as shown in Figure 1, with 12 and around lead, axially be divided into two groups of line cakes of A, B, every group of line cake is overlapping by 6 leads to be the iron core winding of oval type together along the cross section;
(2) two of the cross section of coil semi-circular portions capable assemblings become a complete circle, are divided into 8 grades by one grade of circle that two semi-circular portions are pieced together of 45 degree, and are such as shown in Figure 2; Transposition is carried out on 45 cambered surfaces of spending at interval in two semi-circular portions of coil section, the transposition position that is A, two groups of line cakes of B is present between I～II gear, between III～IV gear, between V～VI gear, between VII～VIII gear, do not have the transposition position between II～III gear and between VI～VII gear; When A, two groups of line cakes of B lead coiling, first circle, lead carries out the evenly coordinated transposition first time around between gear V～VI the time, during transposition, lead in the top of A group lead is bent the top of changing to B group lead through S, and lead bottom of B group lead is organized lead bottom through the curved A that changes to of S simultaneously; Lead carries out the evenly coordinated transposition second time around between gear VII～VIII the time during coiling second circle, carry out evenly coordinated transposition for the third time by that analogy during coiling the 3rd circle, carry out the 4th even coordinated transposition during coiling the 4th circle, a circle at interval then, carry out the 5th even coordinated transposition during coiling the 6th circle, continue with same method, after the 8th even coordinated transposition, carry out the 9th even coordinated transposition behind the circle at interval again, until the even coordinated transposition of the tenth secondary;
(3) as Fig. 3～15, after having carried out replacing for 12 times, the arrangement position of A, two groups of line cakes of B lead is identical with the original alignment position, from axially two groups of line cakes of A, B being drawn.
When coiling, lead start coiling schematic cross-section as shown in Figure 3, continue coiling then, when replacing the position for the first time, coil is carried out the coordinated transposition first time, No. 12 lines are changed to the position of No. 6 lines, No. 11 lines are changed to the position of No. 12 lines, No. 10 line is changed to the position of No. 11 lines, No. 9 lines are changed to the position of No. 10 line, No. 8 lines are changed to the position of No. 9 lines, No. 7 lines are changed to the position of No. 8 lines, Line 1 is changed to the position of No. 7 lines, No. 2 lines are changed to the position of Line 1, No. 3 lines are changed to the position of No. 2 lines, No. 4 lines are changed to the position of No. 3 lines, No. 5 lines are changed to the position of No. 4 lines, No. 6 lines are changed to the position of No. 5 lines, so just carried out once transposition, as shown in Figure 4 at the schematic cross-section of transposition back lead for the first time; Carry out the transposition second time with same method, transposition for the third time, the 4th transposition, the 5th transposition, the 6th transposition, the 7th transposition, the 8th transposition, the 9th transposition, the tenth transposition, the tenth once transposition, the transposition of the tenth secondary, conductor cross-section schematic diagram after the transposition is respectively as Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, shown in Figure 15, so far by 12 leads and around coil carried out once transposition completely, all leads are got back to original position again after the transposition of ten secondaries.
When the transformer coil of the oval type of coiling four spirals cross section, by axially being divided into four groups of line cakes, wherein two adjacent groups line cake is seen and is made a double helix, two groups of adjacent line cakes are seen and are made a double helix in addition, replacing by two the oval type of double helix cross section transformer coils during transposition gets final product, and interchanging method is the same.
Claims (1)
1. the interchanging method of the oval type of a double helix cross section transformer coil the steps include:
(1) with 12 and around lead, axially be divided into two groups of line cakes, every group of line cake is overlapping by 6 leads to be the iron core winding of oval type together along the cross section;
During (2) two groups of line cake lead coilings, every coiling one circle carries out once evenly coordinated transposition, and every transposition four minor ticks one circle replaces next time again, and transposition is carried out on 45 cambered surfaces of spending at interval in two semi-circular portions of coil section;
(3) carry out 12 times the transposition after, the arrangement position of every group of line cake lead is identical with the original alignment position, from axially two groups of line cakes being drawn.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100994567A CN101620923B (en) | 2009-06-15 | 2009-06-15 | Method for replacing double/quadruple helix coil of transformer with long-circle section |
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| CN2009100994567A CN101620923B (en) | 2009-06-15 | 2009-06-15 | Method for replacing double/quadruple helix coil of transformer with long-circle section |
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| CN101620923B true CN101620923B (en) | 2011-05-04 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109036834A (en) * | 2018-08-02 | 2018-12-18 | 中变集团上海变压器有限公司 | A kind of winding method of double-screw type ellipse coil |
| CN110265211A (en) * | 2019-07-25 | 2019-09-20 | 吴江变压器有限公司 | A kind of continuous winding several paralleled conductor wire transposition structure |
| CN112599350B (en) * | 2020-11-30 | 2022-04-19 | 保定天威集团特变电气有限公司 | Lead arrangement method, three-spiral coil winding method and transformer |
| CN112951585B (en) * | 2021-01-29 | 2023-05-02 | 保定天威集团特变电气有限公司 | Manufacturing method and structure of three-cake intertwining reverse unit and transformer |
| CN113658795A (en) * | 2021-08-17 | 2021-11-16 | 江西变压器科技股份有限公司 | Continuous coil winding method for 3-2 combined lead wires in parallel in radial direction |
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