CN101226819A - Method for coiling iron-core transformer winding using cuprum aluminum composite conductor and winding thereof - Google Patents
Method for coiling iron-core transformer winding using cuprum aluminum composite conductor and winding thereof Download PDFInfo
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- CN101226819A CN101226819A CNA2007101673884A CN200710167388A CN101226819A CN 101226819 A CN101226819 A CN 101226819A CN A2007101673884 A CNA2007101673884 A CN A2007101673884A CN 200710167388 A CN200710167388 A CN 200710167388A CN 101226819 A CN101226819 A CN 101226819A
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Abstract
The invention discloses a method of coiling the windings of an iron-core transformer by aluminum copper composite directing lines and windings of an iron-core transformer by aluminum copper composite directing lines, which is characterized in that the aluminum copper composite directing lines are used to coil the windings of an iron-core transformer, resolves the technical problem existing in the process of coiling the windings of an iron-core transformer by aluminum copper composite directing lines. By the method of the invention, aluminum copper composite directing lines is used to replace aluminum directing lines to coil the windings of an iron-core transformer, which decreases the cost of the windings of an iron-core transformer without detracting the properties of the transformer.
Description
Affiliated technical field
The present invention relates to a kind of method and winding thereof of coiling Transformer Winding, especially a kind of method and winding thereof with copper aluminum composite material conductor coiling iron-core transformer winding.
Background technology
The circuit part of the winding constitution equipment of transformer itself, it directly links to each other with the electrical network of outside, is the important components in the transformer, often ratio of winding is done " heart " of transformer.When suffering lightning impulse voltage and switching impulse ripple, the inner short circuit current that can produce of winding greater than the rated current manyfold, huge with radial generation vertically mechanical force can instantaneously be promoted to high degree of danger with winding temperature simultaneously.
Copper has unique physical property and electric property, is traditional electric conducting material, also is the main raw material(s) of Transformer Winding.Because the scarcity of copper resource and the market price are high in the world, impel electrician trade actively to seek substitute material.It is generally acknowledged that aluminum conductor is a substitute material preferably.Because the aboundresources of aluminium, it has cheap, in light weight, conductance than advantages such as height, so, " with aluminium for copper " was just proposed in the sixties in 20th century, make the electric energy transmitting line with aluminum conductor, comprising making Transformer Winding.Development along with the double metallic composite material technology, people utilize the good electric conductivity and the lightweight characteristics of aluminium of copper, the copper layer is coated on around the aluminum core line, formation has good conductivity, little, soft, corrosion-resistant, the easy soldering of density, cheap copper cladding aluminum conductor, thereby develops into the third metal material of lead.Compound copper-aluminium wire is a kind of high performance bimetallic wire, and the thickness of its copper approximately is that its conductance approximately is 62.9% of a copper cash at 3.5% of smaller part warp, and the length of the copper-clad aluminum conductor in same weight, cross section is 2.7 times of pure copper wire length.But, because the intensity of aluminium is lower, creep easily, can produce distortion after long-term the use, and the corrosion resistance of aluminium is relatively poor, the surface very easily forms firm oxide-film, and to cause with compound copper-aluminium wire coiling Transformer Winding become technical barrier, thereby has limited further applying of " with aluminium for copper ".
Nowadays the most frequently used material of Transformer Winding remains copper.Though it can bear short circuit mechanical force, instantaneous high temperature, because copper resource scarcity, copper price height make the transformer cost high.How to solve and use this technical problem of compound copper-aluminium wire coiling Transformer Winding just to be paid close attention to by people day by day.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method with copper aluminum composite material conductor coiling iron-core transformer winding, and the iron-core transformer winding that turns to compound copper-aluminium wire, realize both having reduced the cost of Transformer Winding, the purpose of its performance that do not detract again.
A kind of method of the present invention with copper aluminum composite material conductor coiling iron-core transformer winding, the content of the technical scheme that it adopted comprises:
Insulating paper cylinder is fixed on the coiling mould earlier, then first Wei system of coil finished bandage after, with lead on request evenly on paper web, can coiling one or more layers; Between two-layer, add corresponding layer insulation, or the corrugation oil duct; In the coil winding process, when every layer beginning and end, all to place the end insulation, strengthen the dielectric strength of upper and lower end parts; Also to satisfy following requirement:
1, determines die size according to winding inner diameter, and determine the shape of winding mould as requested;
2, with copper aluminum composite material conductor coiling winding on selected mould according to a conventional method;
3, in the winding process, winding roll will be closely crack continuously, the turn-to-turn interlayer of winding is wanted closely not allow loosening wire turn; Structural nargin must be suitably, and control insulating part and lead do not exceed franchise; With the appropriate insulation material turn-to-turn, interlayer are tamped during as negative franchise, do not allow with loose around way maintenance winding outside limit size; Guarantee the physical dimension of winding, control winding size can not exceed the deviate of permission;
4, the sectional dimension of copper aluminum composite material conductor, insulation thickness and quality should meet the requirements; The surface smoothness that keeps copper aluminum composite material conductor can not be jagged, cut and pipe, and no dirt and rust staining also will keep rounded shapes on the cross section to lenticular wire; The used strip conductor of same Transformer Winding, fillet should be identical, is consistent to guarantee the three-phase electricity resistance;
5, reduce terminal quantity, the welding of winding inner lead except that guaranteeing welding resistance, is answered the smoothing solder joint, and the wedge angle burr can not be arranged, and reinforced insulation as far as possible;
6, roll in the process, the lead of stopping insulation harm is involved in winding inside, to the transposition of lead, the section of striding, rise layer and draw line end etc. and locate equal reinforced insulation;
When 7, the coil multiple conducting wires is lifted one's head side by side, make lead line up square as far as possible;
8, roll in the process, external diameter in the strict control winding, especially short-axis direction needs coiling limit, limit to impact the size that guarantees short-axis direction with wooden mallet;
9, copper aluminium recombination line is its tensile strength of increase in manufacture process, make its ductility not as good as copper conductor, in the coiling process, when a first head of copper aluminium recombination line coil and an end Chu Xian Wei are curved, thereby to avoid influencing the overall performance of lead because of external force makes the copper coating fracture of lead.
A kind of iron-core transformer winding with the said method coiling comprises iron core and coil, it is characterized in that: the copper aluminum composite material conductor coiling of described coil.
Described iron-core transformer winding is characterized in that: described copper aluminum composite material coil evenly on paper web, can have one or more layers, and the end insulation is placed at the coil two ends.
Described a kind of iron-core transformer winding is characterized in that: corresponding layer insulation or corrugated board are arranged between two-layer coil, some oil ducts are arranged between corrugated board and the coil.
Use method of the present invention, with copper aluminum composite material conductor Alloy instead of Copper lead coiling iron-core transformer winding, both reduced the cost of Transformer Winding, its performance does not detract again.Because little, the light weight of density of copper aluminum composite material conductor adopts this lead can reduce the quality of Transformer Winding, alleviates working strength of workers, make product be convenient to transportation and installation.Simultaneously, the specific heat ratio copper conductor of compound copper-aluminium wire big, under the condition of same resistance, electric current and conduction time, the temperature rise of winding is lower, thereby has prolonged the ageing process of insulating material, has improved the useful life of transformer.Though the compound copper-aluminium wire of soft attitude or hard attitude no matter, its tensile strength and percentage elongation are all lower than the copper conductor, but still are enough to satisfy the requirement of winding to the lead mechanical property, and especially copper aluminum composite material conductor has the good characteristic of copper cash and aluminum steel concurrently, and is cheap.
Description of drawings
Fig. 1 is the structural representation of winding of the present invention;
Fig. 2 is the schematic cross-section of oval iron-core transformer winding;
Fig. 3 is the schematic cross-section of circular iron-core transformer winding;
Fig. 4 is the schematic diagram of embodiment 3 described continous way winding methods.
Embodiment
For electric equipments such as transformers, the coiling of its winding is vital, should guarantee enough dielectric strength and mechanical strength in strict accordance with design during coiling.According to the difference of electric pressure, the difference of capacity will adopt the winding of different structure form.Method of the present invention can be for selecting for use.
A kind of method of the present invention with copper aluminum composite material conductor coiling iron-core transformer winding, its content comprises:
Earlier insulating paper cylinder 3 is fixed on the mould, then coil 4 Shou Tou Wei systems are finished bandage after, lead is evenly obtained coil 4 on request on paper web 3, and between two-layer, add corresponding layer insulation 6 or corrugated board 1, form corrugation oil duct 2 between corrugated board 1 and the coil 4; In the coil winding process, when every layer beginning and end, all to place end insulation 5, strengthen the dielectric strength of upper and lower end parts;
Also to satisfy following requirement:
1, determines die size according to winding inner diameter, and determine the shape of winding mould according to design;
2, with copper aluminum composite material conductor coiling winding on selected mould according to a conventional method; Winding roll will be closely crack continuously, the turn-to-turn interlayer of winding must closely not allow loosening wire turn, structural nargin must be suitably, should control insulating part and lead and not exceed franchise, should consider turn-to-turn, interlayer to be tamped during as negative franchise with the appropriate insulation material, do not allow with loose around way maintenance winding outside limit size;
3, guarantee the physical dimension of winding, radial and axial size, the short-circuit impedance value of decision winding, therefore must control the winding size can not exceed the deviate of permission;
4, remove the sectional dimension (decision current density) of noting lead, outside insulation thickness and quality, should also be noted that rounded shapes (for lenticular wire) on the surface smoothness of lead and the conductor cross-section, defectives such as the surface can not be jagged, cut and pipe, should clean no dirt and rust staining, same the used strip conductor of Transformer Winding, fillet should be identical, differs too many to guarantee that the three-phase electricity resistance is unlikely;
5, the regulation, should reduce terminal quantity on structure, the wire bonds of winding inside guarantees more should note the smoothing of solder joint outside the welding resistance, any wedge angle burr can not be arranged, and answer local reinforced insulation as far as possible;
6, roll in the process and should note the wire insulation quality at any time, the lead that does not allow insulation harm is involved in winding inside, and to the transposition of lead, the section of striding rises layer and draws line end etc. and locate reinforced insulation in accordance with regulations;
When 7, the coil multiple conducting wires is lifted one's head side by side, make lead line up square as far as possible so that better be connected with the cold welding terminal;
8, roll in the process, external diameter in the strictness control winding, especially short-axis direction because in the middle of the actual winding process, short-axis direction is easy to drum, just needs coiling limit, limit to impact the size that guarantees short-axis direction with wooden mallet at this moment.
9, copper aluminium recombination line is its tensile strength of increase in manufacture process, make its ductility not as good as copper conductor, in the coiling process, when a first head of copper aluminium recombination line coil and an end Chu Xian Wei are curved, thereby to avoid influencing the overall performance of lead because of external force makes the copper coating fracture of lead.
Iron-core transformer winding with the method for the invention coiling comprises iron core and coil, the copper aluminum composite material conductor coiling of described coil.As Fig. 1, Fig. 2 and shown in Figure 3, the structure of described iron-core transformer winding is: coil 4 Shou Tou Wei are curved, copper aluminum composite material conductor evenly obtains coil 4 on paper web 3, corresponding layer insulation 6 or corrugated board 1 are arranged between two-layer coil, form corrugation oil duct 2 between corrugated board 1 and the coil 4; In the beginning and the end of every layer of coil, be placed with end insulation 5.
Described iron-core transformer winding is divided into laminar, cake formula.Laminar is divided into individual layer, bilayer or multilayer.Single, double layer is used for low capacity low pressure winding, the multi-layer cylinder formula is used for low capacity high pressure winding more.
Carry out following operation according to a kind of method of the present invention with copper aluminum composite material conductor coiling iron-core transformer winding.
Single, double layer drum type brake winding construction is fairly simple, adopts the parallel conducting wire coiling, radial have and around the time should carry out a standard transposition at every layer of middle part, can make like this that the residing stray field situation of lead equates, conductor length equates.Transposition can make the high lead of winding height, and the space that transposition stays must be filled and led up with the suitable paperboard strip of width, and uses the strap colligation on contiguous wire turn paperboard strip; The leading-out end bending approximate 90 of winding.Use the local reinforced insulation of crimped paper near the angle, turning; The end circle is fixed by strap and adjacent turns, the winding termination is locked on contiguous several circles with the higher twill band of intensity, but the more important thing is that tighten winding along circumference with high strength crimped paper or strap at the position in the winding termination in the winding outside, prevent the winding resilience and make diameter become big, this is to prevent that the termination displacement is necessary.
Multi-layer cylinder formula winding adopts the solid conductor coiling, the initial head curved 90 of winding.From axially drawing of winding, lead-out wire is reinforced insulation near bending part; Wire turn must closely be arranged during coiling, should stipulate every layer the number of turn on the structure, and as because of total number of turns determines, when certain one deck need reduce the number of turn, the paperboard strip of its vacant position (no lead location) application proper width was filled and led up and do not allowed turn-to-turn loosening; Layer insulation generally which floor insulating point gummed paper of 0.08 is made of, and every paper staggers and is trapped among on the wire turn, and the direction that staggers can not be done instead, otherwise is difficult for packing tightly; If need rotate the axial oil clearance stay of heat transmission in the interlayer somewhere, and the stay spacing is when big, should place one of interim stay or two between stay, to guarantee on stay, to continue the unlikely formation of wire turn " polygonal " that rolls thus influence the even of oil clearance.
Pie winding comprises continous way, spiral.At this continous way is introduced.
The continous way winding is a kind of winding configuration that power transformer generally adopts, and turns to plate-like with strip conductor as the mosquito-repellent incense that spirals, and the wire turn of each cake is together in series continuously becomes a winding, and more precisely it is a pie winding of a continuous coiled.
The method that rolls is continuously seen Fig. 1, and elder generation around " temporarily " line segment 1 '-7 ', makes " elbow " of crossing over line segment at the termination place of 7 ' circle then on winding former, and it is curved to be commonly called as S.At this moment elbow is placed on wire turn 7 positions on right side, this interim line segment is begun to move on on the wire turn 7 by circle until 1 ' from 6 ', form first line segment of winding at last, i.e. 1-7.Go up continuation volume 8-14 circle at " elbow " and form second line segment, this line segment does not need again by the circle dislocation, do second section of striding elbow at the termination place of 14 circles, lead is drawn on the axial stay of spiral mould with a Z-shaped pad of forming by paperboard strip then, begins second interim line segment 15 '-21 ' circle.So continue and just be rolled into the continous way winding.
Claims (4)
1. method with copper aluminum composite material conductor coiling iron-core transformer winding is characterized in that:
Insulating paper cylinder (3) is fixed on the coiling mould earlier, then first Wei system of coil (4) finished bandage after, lead evenly gone up around paper web (3) on request forms coil (4), one or more layers can be arranged; Corresponding layer insulation (6) or corrugated board (1) are set between two-layer coil (4); In the coil winding process, when every layer beginning and end, all to place end insulation (5);
Also to satisfy following requirement:
A, determine die size, and determine the shape of winding mould as requested according to winding inner diameter; With copper aluminum composite material conductor coiling winding on selected mould according to a conventional method;
In b, the winding process, winding roll will be closely crack continuously, the turn-to-turn interlayer of winding is wanted closely not allow loosening wire turn; Structural nargin must be suitably, and control insulating part and lead do not exceed franchise; With the appropriate insulation material turn-to-turn, interlayer are tamped during as negative franchise, do not allow with loose around way maintenance winding outside limit size; Guarantee the physical dimension of winding, control winding size can not exceed the deviate of permission;
The sectional dimension of c, copper aluminum composite material conductor, insulation thickness and quality should meet the requirements; The surface smoothness that keeps copper aluminum composite material conductor, the used strip conductor of same Transformer Winding, fillet should be identical;
D, reduce terminal quantity as far as possible; The welding of winding inner lead except that guaranteeing welding resistance, is answered the smoothing solder joint, and reinforced insulation;
E, roll in the process, the lead of stopping insulation harm is involved in winding inside, to transposition, the section of striding of lead, rise layer and draw the equal reinforced insulation of line end; When the coil multiple conducting wires is lifted one's head side by side, line up square;
F, roll in the process, external diameter in the control winding, especially short-axis direction wants coiling limit, limit to impact with wooden mallet;
First head of g, coil and end head go out line Wei when curved, and essential factor external force does not make the copper coating fracture of lead.
2. the iron-core transformer winding according to the described method coiling of claim 1 comprises iron core and coil, it is characterized in that: described coil (4) is the copper aluminum composite material conductor coiling.
3. a kind of iron-core transformer winding according to claim 2 is characterized in that: described copper aluminum composite material coil (4) evenly on paper web (3), can have one or more layers, and end insulation (5) is placed at coil (4) two ends.
4. a kind of iron-core transformer winding according to claim 3 is characterized in that: corresponding layer insulation (6) or corrugated board (1) are arranged between two-layer coil (4), between corrugated board (1) and the coil (4) some oil ducts (2) are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101673884A CN101226819A (en) | 2007-11-26 | 2007-11-26 | Method for coiling iron-core transformer winding using cuprum aluminum composite conductor and winding thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101673884A CN101226819A (en) | 2007-11-26 | 2007-11-26 | Method for coiling iron-core transformer winding using cuprum aluminum composite conductor and winding thereof |
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| CN101226819A true CN101226819A (en) | 2008-07-23 |
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| CNA2007101673884A Pending CN101226819A (en) | 2007-11-26 | 2007-11-26 | Method for coiling iron-core transformer winding using cuprum aluminum composite conductor and winding thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901686B (en) * | 2009-05-25 | 2012-09-05 | 上海飞晶电气股份有限公司 | Method for improving short-circuit resistance and compression and impact resistance of transformer coil |
| CN102930963A (en) * | 2012-10-22 | 2013-02-13 | 芜湖金牛电气股份有限公司 | Power transformer and manufacture method thereof |
| CN103000354A (en) * | 2012-12-20 | 2013-03-27 | 江苏铭安电气有限公司 | Novel transformer |
| CN103000347A (en) * | 2011-09-08 | 2013-03-27 | 辽宁易发式电气设备有限公司 | Method for improving mechanical strength of cylindrical voltage regulation coil |
| CN106601447A (en) * | 2017-01-19 | 2017-04-26 | 国家电网公司 | Oil-immersed transformer low-voltage winding structure adopting transposed conductors |
| CN108335870A (en) * | 2017-12-25 | 2018-07-27 | 中铁第勘察设计院集团有限公司 | The volume iron core tractive transformer coil and winding method of coiling of high-voltage coil and low-voltage coil |
| CN108962587A (en) * | 2018-07-19 | 2018-12-07 | 德阳新源电器有限责任公司 | High current band winding technologe |
| CN111933447A (en) * | 2020-05-29 | 2020-11-13 | 大连北方互感器集团有限公司 | Method for winding primary winding of voltage transformer coil |
| CN115171998A (en) * | 2022-06-30 | 2022-10-11 | 西比里电机技术(苏州)有限公司 | Concatenation formula aluminum winding |
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2007
- 2007-11-26 CN CNA2007101673884A patent/CN101226819A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901686B (en) * | 2009-05-25 | 2012-09-05 | 上海飞晶电气股份有限公司 | Method for improving short-circuit resistance and compression and impact resistance of transformer coil |
| CN103000347A (en) * | 2011-09-08 | 2013-03-27 | 辽宁易发式电气设备有限公司 | Method for improving mechanical strength of cylindrical voltage regulation coil |
| CN102930963A (en) * | 2012-10-22 | 2013-02-13 | 芜湖金牛电气股份有限公司 | Power transformer and manufacture method thereof |
| CN102930963B (en) * | 2012-10-22 | 2015-09-30 | 芜湖金牛电气股份有限公司 | Power transformer and manufacture method thereof |
| CN103000354A (en) * | 2012-12-20 | 2013-03-27 | 江苏铭安电气有限公司 | Novel transformer |
| CN106601447A (en) * | 2017-01-19 | 2017-04-26 | 国家电网公司 | Oil-immersed transformer low-voltage winding structure adopting transposed conductors |
| CN108335870A (en) * | 2017-12-25 | 2018-07-27 | 中铁第勘察设计院集团有限公司 | The volume iron core tractive transformer coil and winding method of coiling of high-voltage coil and low-voltage coil |
| CN108962587A (en) * | 2018-07-19 | 2018-12-07 | 德阳新源电器有限责任公司 | High current band winding technologe |
| CN111933447A (en) * | 2020-05-29 | 2020-11-13 | 大连北方互感器集团有限公司 | Method for winding primary winding of voltage transformer coil |
| CN115171998A (en) * | 2022-06-30 | 2022-10-11 | 西比里电机技术(苏州)有限公司 | Concatenation formula aluminum winding |
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Open date: 20080723 |