CN103632801A - Four-band shunt-wound high-temperature superconducting double-pie coil and winding die and winding method thereof - Google Patents
Four-band shunt-wound high-temperature superconducting double-pie coil and winding die and winding method thereof Download PDFInfo
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Abstract
The invention discloses a four-band shunt-wound high-temperature superconducting double-pie coil and a winding die and a winding method thereof. The four-band shunt-wound high-temperature superconducting double-pie coil consists two sets of coils and a pie-to-pie support gasket (5), wherein each set of coils comprises a positive pie and a negative pie which are wound by four shunt-wound superconducting bands (1-4); the high-temperature superconducting double-pie coil is divided into the positive pie and the negative pie by the pie-to-pie support gasket (5). Two transposition ports are formed in a position of 0 degree and a position of 180 degrees along the peripheral direction of the pie-to-pie support gasket (5); transposition is performed on the positive-pie coils and the negative-pie coils for two times at the two transposition ports. The winding die for the coil consists of a main shaft (6), a first template (7), a second template (8), a positioning bolt (9), a first pressing plate (10), a second pressing plate (11), a first locknut (12), a second locknut (13) and temporary separation blades (14). The outer side of the first template (6) and the outer side of the second template (7) are respectively provided with a small groove along the peripheral direction to clamp the pie-to-pie support gasket (5) in the middle; the first template (7) and the second template (8) are pressed by the first pressing plate (10) and the second pressing plate (11).
Description
Technical field
The present invention relates to double-cake coils and winding mould and the winding method of the coiling in parallel of a kind of belt material of high temperature superconduct.
Background technology
The smoothing reactor being applied in high-temperature superconductive transformer, reactor and the direct current power system in AC electric power systems need to possess the ability of bearing high voltage and large electric current.For the high-temperature superconducting magnet that bears large electric current for need, owing to being difficult to adopt the transposed conductor of multi-band parallel connection to make Helical winding, conventionally need the parallel-connection structure that adopts a plurality of double-cake coils to form.While being applied to exchange occasion, adopt the mode of a plurality of winding parallels.Because the position in each winding magnetic field of living in is different, self-induction and mutual inductance between each winding there are differences, thereby cause the electric current distribution of each winding also to there are differences; Meanwhile, for superconduction winding, very large at the magnetic field axial component at winding middle part, and very large in the radial component in winding overhang magnetic field.In order to solve the problem of a plurality of winding current maldistributions, by the gap changing between each winding in parallel, be a kind of mode, but be difficult to from solving in essence circulation problem, and increased the overall height of winding; Adopting transposition between winding is another kind of mode, but the transposition between winding is not usually complete transposition, and circulation still unavoidably exists.In addition, between winding, transposition need to adopt plain conductor conventionally, has not only increased loss, and brings a lot of difficulties for the processing of High-Voltage Insulation.
In addition, also there is the problem of outfield lower critical electric current degradation in belt material of high temperature superconduct.For Bi and Y based high-temperature superconductive strip, very large perpendicular to strip surface magnetic fields lower critical current density degradation, but to be parallel under strip surface magnetic fields the two critical current degradation all smaller.For the superconduction winding being applied in the superconducting power devices such as superconducting transformer and reactor, winding overhang is very strong perpendicular to the magnetic field on superconducting tape surface, and winding middle part is mainly the magnetic field that is parallel to superconducting tape surface; Therefore, the current capacity of end coil is much lower compared to middle part winding.
The inductance value that is applied to superconducting transformer low pressure winding in electric power system and super conducting electric reactor winding is less, but electric current is very large, adopts the coilings in parallel of a plurality of superconduction double-cake coils more suitable.Because the residing position of each superconduction double-cake coils is different, it is inhomogeneous that the Magnetic fluxleakage distribution that superconducting coil produces and electric current distribute.Figure 1 shows that the many groups superconduction double-cake coils parallel-connection structure and the Magnetic fluxleakage distribution figure that are applied to superconducting transformer low pressure winding; Figure 2 shows that the many groups superconduction double-cake coils parallel-connection structure and the Magnetic fluxleakage distribution figure that are applied to iron core reactor; Figure 3 shows that the many groups superconduction double-cake coils parallel-connection structure and the Magnetic fluxleakage distribution figure that are applied to air-core reactor.From Fig. 1, Fig. 2 and Fig. 3, can find out, for large current superconducting transformer low voltage winding, iron core reactor winding, the air-core reactor winding by organizing superconduction double-cake coils more and composing in parallel, all exist the horizontal stray field of winding overhang larger, cause the problems such as superconducting tape performance degradation.In addition, by the emulation of electromagnetic field which couple, find, be applied to exchange occasion, adopt the mode of a plurality of winding parallels, because the position in each winding magnetic field of living in is different, self-induction and mutual inductance between each winding there are differences, thereby cause the electric current distribution of each winding also to there are differences; The electric current that winding overhang coil distributes is the several times of middle part coil, as shown in Figure 4.But because the horizontal stray field of winding overhang is larger, the ampacity of end coil is more much lower than middle part coil.Therefore, for the superconducting magnet of being constructed by double-cake coils, there is the situation that adopts two and more superconducting tape coilings in the double-cake coils of end, research multi-band extremely important around the building method of high-temperature superconductor double-cake coils.
Consider merely and be difficult to solve in essence circulation by changing two kinds of modes of winding space and transposition, and little two problems of winding overhang coil current capacity, for the superconducting magnet of being constructed by double-cake coils, there is the situation that adopts two and more superconducting tape coilings in the double-cake coils of end.Chinese invention patent 200510086700.8 discloses the double wrap double-cake coils of two superconducting wire coilings of a kind of employing, two pancake coil coilings can be taken shape on a skeleton, does not relate to the double-cake coils that adopts two above superconducting tape coilings.Chinese invention patent 200410009185.9 discloses a kind of double-plate coil coiling device, and its coiling device and double-cake coils skeleton structure cannot directly apply to four belt material of high temperature superconduct coiling double-cake coils in parallel.
Summary of the invention
The object of the invention is to overcome existing high-temperature superconductor double-cake coils and only can adopt one or two belt material of high temperature superconduct coilings in parallel, and existing double-plate coil coiling device cannot directly apply to the shortcomings such as the four-tape and more parallel band coiling, double-cake coils and corresponding winding mould and the winding method of four superconducting tapes of a kind of application coilings in parallel proposed.The present invention can be applicable to the four-tape and above Bi system and Y based high-temperature superconductive strip coiling double-cake coils, thereby effectively solves because a plurality of connection in series-parallel winding currents distribute the uneven problem of bringing.
Technical solution of the present invention is as follows:
The four-tape of the present invention and between high-temperature superconductor double-cake coils is by positive cake, anti-cake and cake support pad form, described positive cake and anti-cake by four and around superconductive tape coiling.Between cake, support pad is divided into positive cake and two groups of coils of anti-cake by described double-cake coils, and between cake, support pad is simultaneously as the insulation between positive cake and two groups of coils of anti-cake.In positive cake coil, the four-tape and around putting in order of superconductive tape be the first superconductive tape, the second superconductive tape, the 3rd superconductive tape, the 4th superconductive tape; In anti-cake coil, the four-tape and around superconductive tape lift one's head that to put in order be four to surpass band, the 3rd superconductive tape, the second superconductive tape, the first superconductive tape; Between cake, support pad along the circumferential direction has two transpositions mouthful 0 ° and 180 ° of positions, and positive cake coil and anti-cake coil carry out twice transposition at two transposition mouths.
The described coiling four-tape and around the winding mould of high-temperature superconductor double-cake coils by main shaft, the first template and the second template, bolt, the first pressing plate and the second pressing plate, the first locking nut and the second locking nut and interim catch, formed.
Between the first locking nut, the first pressing plate, the first template, cake, support pad, the second template, the second pressing plate and the second locking nut are sequentially enclosed within on main shaft successively.The outside of the first template and the second template along the circumferential direction has sulculus, and between cake, support pad is clipped in the middle of the first template and the second template.The first pressing plate is positioned at outside the first template, and the second pressing plate is positioned at outside the second template, and the first pressing plate and the second pressing plate compress from both sides by the first template and the second template, and prevent from producing slippage between the first template and the second template and main shaft.The first locking nut and the second locking nut are respectively by the first pressing plate and the locking of the second pressing plate.Interim catch is positioned at positive cake and anti-cake outside, adopts interim catch during anti-principal vertical line cake coiling, to be offset laterally.
For the four-tape and around high-temperature superconductor double-cake coils, superconductive tape can adopt the superconducting tape such as Bi system, Y system to make; Between cake, support pad adopts glass-reinforced plastic material or NOMEX paperboard.Winding mould adopts the nonmetallic materials such as smooth, carrot-free polymethyl methacrylate, rigid plastics to make for clamping the first template and second template of support pad between cake; The first pressing plate and the second pressing plate adopt metal or expoxy glass Steel material to make.Interim catch adopts polymethyl methacrylate or rigid plastics to make.
The four-tape of the present invention also has ampacity around high-temperature superconductor double-cake coils and greatly, is respectively with the advantages such as loaded current distributed uniform, can be applicable to make the large electric current such as superconducting transformer, super conducting electric reactor and exchange outside winding, also can be applicable to making and wait superconduction smoothing reactor DC superconducting winding.
Adopt the winding mould coiling four-tape of the present invention and around the method for high-temperature superconductor double-cake coils be:
4 draw drums that are wound with hts band are separately fixed on 4 groups of unwrapping wire torque motors, and make draw drum and wire spool substantially in a plane.4 superconductive tapes are drawn from draw drum with certain angle, and the first superconductive tape and the second superconductive tape are introduced the second template by the first template after 0 ° of transposition mouthful coordinated transposition.The 3rd superconductive tape and the 4th superconductive tape are positioned at the inner side of the first superconductive tape and the second superconductive tape at 0 ° of transposition mouth, after 180 ° of transposition mouthful coordinated transpositions, by the first template, introduce the second template, 180 ° transposition mouthful, the 3rd superconductive tape and the 4th superconductive tape be positioned at superconductive tape and outside; Like this, by the operation in two transpositions mouthful, the four-tape around the putting in order by the first superconductive tape of superconductive tape, the second superconductive tape, the 3rd superconductive tape, the 4th superconductive tape becomes the 4th superconductive tape, the 3rd superconductive tape, the second superconductive tape, the first superconductive tape.Complete after transposition, half of the required superconductive tape total length of double-plate coil coiling is wound in the second template by 0 ° and 180 ° two transposition mouthful, and the termination of four superconductive tapes is fixed.By unwrapping wire torque motor, regulate the prestressing force on superconductive tape, prevent that winding is loose at low temperatures, then rotate coil winding machine and first complete positive cake coiling, by interim catch, prevent coil slippage laterally.After positive cake coiling completes, four superconductive tape terminations of positive cake are fixedly prevented to slippage, four superconductive tape terminations of anti-cake are fixed on the take-up reel of 4 groups of take-up torque motors by leader tape.Next, rotate backward coil winding machine and then complete anti-cake coiling.After anti-cake coiling completes, four superconductive tape terminations of anti-cake are fixedly prevented to slippage.Positive cake and anti-cake after all coiling completes, take off from the first template and the second template together with support pad between cake, form a complete four-tape and around high-temperature superconductor double-cake coils.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1 is many groups superconduction double-cake coils parallel-connection structure and the Magnetic fluxleakage distribution schematic diagram that is applied to superconducting transformer low pressure winding;
Fig. 2 is many groups superconduction double-cake coils parallel-connection structure and the Magnetic fluxleakage distribution schematic diagram that is applied to iron core reactor winding;
Fig. 3 is many groups superconduction double-cake coils parallel-connection structure and the Magnetic fluxleakage distribution schematic diagram that is applied to air-core reactor winding;
Fig. 4 is many groups superconduction double-cake coils current distributing figure in parallel;
Fig. 5 is support pad schematic diagram between cake;
Fig. 6 is the four-tape around superconduction double-plate coil coiling die assembly schematic diagram;
Fig. 7 is the four-tape around superconduction double-cake coils transposition form schematic diagram.
Embodiment
Below in conjunction with a preferred embodiment of the invention explanation four-tape and around interchanging method and the winding mould of high-temperature superconductor double-cake coils.
The four-tape and between high-temperature superconductor double-cake coils is by positive cake, anti-cake and cake support pad 5 form, described positive cake and anti-cake by four and around superconductive tape 1-4 coiling form.Between cake, support pad 5 is divided into positive cake and two groups of coils of anti-cake by high-temperature superconductor double-cake coils, and between cake, support pad 5 is as the insulation between positive cake and two groups of coils of anti-cake.In positive cake coil, the four-tape and around putting in order of superconductive tape 1-4 be the first superconductive tape 1, the second superconductive tape 2, the three superconductive tape 3, the four superconductive tapes 4; In anti-cake coil, the four-tape and around superconductive tape 1-4 lift one's head that to put in order be the 4th superconductive tape 4, the three superconductive tape 3, the second superconductive tape 2, the first superconductive tapes 1.Between cake, support pad 5 along the circumferential direction has two transpositions mouthful 0 ° and 180 ° of positions, as shown in Figure 5; Positive cake coil and anti-cake coil carry out twice transposition at two transposition mouths.
Winding mould is comprised of main shaft 6, the first template 7 and the second template 8, bolt 9, the first pressing plate 10 and the second pressing plate 11, the first locking nut 12 and the second locking nut 13 and interim catch 14.
Between the first locking nut 12, the first pressing plate 10, the first template 7, cake, support pad 5, the second template 8, the second pressing plate 11 and the second locking nut 13 are enclosed within on main shaft 6 in this order successively; The outside of the first template 7 and the second template 8 along the circumferential direction has sulculus, and between cake, support pad 5 is clipped in the middle of the first template 7 and the second template 8.The first pressing plate 10 is positioned at outside the first template 6, and the second pressing plate 11 is positioned at outside the second template 8, and the first pressing plate 10 and the second pressing plate 11 compress from both sides by the first template 7 and the second template 8, and prevent from producing slippage between the first template 7 and the second template 8 and main shaft 6.The first locking nut 12 and the second locking nut 13 are respectively by the first pressing plate 10 and the second pressing plate 11 lockings.Interim catch 14 is positioned at positive cake and anti-cake outside, can prevent skew laterally in positive cake and anti-cake winding process.
In high-temperature superconductor double-cake coils, described superconductive tape 1-4 can adopt the superconducting tapes such as Bi system, Y system to make; Between cake, support pad 5 adopts glass-reinforced plastic material or NOMEX paperboard.In winding mould, the first described template 7 and the second template 8 can adopt the nonmetallic materials such as smooth, carrot-free polymethyl methacrylate, rigid plastics to make; The first pressing plate 10 and the second pressing plate 11 adopt metal or expoxy glass Steel material to make; Interim catch 14 adopts polymethyl methacrylate or rigid plastics to make.
Adopt the winding mould transposition coiling four-tape as follows around the process of high-temperature superconductor double-cake coils of the present invention:
First one end of winding mould main shaft 6 coil winding machine locking chuck, then by the order shown in Fig. 6, successively support pad 5, the second template 8, the second pressing plate 11 and the second locking nut 13 between the first locking nut 12, the first pressing plate 10, the first template 7, cake are contained on main shaft 6, as shown in Figure 6.4 draw drums that are wound with hts band are separately fixed on 4 groups of unwrapping wire torque motors, and make draw drum and wire spool substantially in a plane.4 superconductive tapes are drawn from draw drum with certain angle, and the first superconductive tape 1 and the second superconductive tape 2 are introduced the second template 8 by the first template 7 after 0 ° of transposition mouthful coordinated transposition.The 3rd superconductive tape 3 and the 4th superconductive tape 4 are positioned at the inner side of the first superconductive tape 1 and the second superconductive tape 2 at 0 ° of transposition mouth, after 180 ° of transposition mouthful coordinated transpositions, by the first template 7, introduce the second template 8,180 ° of transpositions mouthful, the 3rd superconductive tape 3 and the 4th superconductive tape 4 are positioned at the outside of superconductive tape 1 and 2; Like this, by the operation at two transposition mouths, the four-tape putting in order by the first superconductive tape 1, the second superconductive tape 2 around superconductive tape, the 3rd superconductive tape 3, the four superconductive tapes 4 become the 4th superconductive tape 4, the three superconductive tapes 3, the second superconductive tape 2, the first superconductive tapes 1, as shown in Figure 7.Complete after transposition, half of the required superconductive tape total length of double-plate coil coiling is wound in the second template 8 by 0 ° and 180 ° two transposition mouthful, and the termination of four superconductive tapes is fixed.By unwrapping wire torque motor, regulate the prestressing force on superconductive tape, prevent that winding is loose at low temperatures, then rotate coil winding machine and first complete positive cake coiling, by interim catch 14, prevent coil slippage laterally.After positive cake coiling completes, four superconductive tape terminations of positive cake are fixedly prevented to slippage, four superconductive tape terminations of anti-cake are fixed on the take-up reel of 4 groups of take-up torque motors by leader tape.Next, rotate backward coil winding machine and then complete anti-cake coiling.After anti-cake coiling completes, four superconductive tape terminations of anti-cake are fixedly prevented to slippage.Positive cake and anti-cake after all coiling completes, take off from the first template 7 and the second template 8 together with support pad between cake, form a complete four-tape and around high-temperature superconductor double-cake coils.
Claims (5)
1. the four-tape around a high-temperature superconductor double-cake coils, is characterized in that, described high-temperature superconductor double-cake coils is comprised of support pad (5) between positive cake, anti-cake and cake; Described positive cake and anti-cake by four and around superconductive tape (1-4) coiling form; Support pad between described cake (5) is divided into positive cake and two groups of coils of anti-cake by high-temperature superconductor double-cake coils, and support pad between cake (5) is as the insulation between positive cake and two groups of coils of anti-cake; In positive cake coil, the four-tape and around superconductive tape (1-4) to put in order be the first superconductive tape (1), the second superconductive tape (2), the 3rd superconductive tape (3), the 4th superconductive tape (4); In anti-cake coil, the four-tape and around superconductive tape (1-4) lift one's head that to put in order be the 4th superconductive tape (4), the 3rd superconductive tape (3), the second superconductive tape (2), the first superconductive tape (1); Support pad between cake (5) along the circumferential direction has two transpositions mouthful 0 ° and 180 ° of positions; Positive cake coil and anti-cake coil carry out twice transposition at two transposition mouths.
2. high-temperature superconductor double-cake coils as claimed in claim 1, is characterized in that: it is that superconducting tape is made that described superconductive tape (1-4) adopts Bi system or Y; Support pad between described cake (5) adopts glass-reinforced plastic material or NOMEX paperboard.
3. the coiling four-tape claimed in claim 1 around the mould of high-temperature superconductor double-cake coils, is characterized in that: described winding mould is comprised of main shaft (6), the first template (7) and the second template (8), bolt (9), the first pressing plate (10) and the second pressing plate (11), the first locking nut (12) and the second locking nut (13) and interim catch (14); Between the first locking nut (12), the first pressing plate (10), the first template (7), cake, support pad (5), the second template (8), the second pressing plate (11) and the second locking nut (13) order are inserted on main shaft successively; The outside of the first template (6) and the second template (7) along the circumferential direction has sulculus, and support pad between cake (8) is clipped in the middle of the first template (7) and the second template (8); The first pressing plate (10) is positioned at outside the first template (6), the second pressing plate (11) is positioned at outside the second template (8), the first pressing plate (10) and the second pressing plate (11) compress from both sides by the first template (7) and the second template (8), and prevent from producing slippage between the first template (7) and the second template (8) and main shaft (6); The first locking nut (12) and the second locking nut (13) are respectively by the first pressing plate (10) and the second pressing plate (11) locking; Interim catch (14) is positioned at positive cake and anti-cake outside, prevents skew laterally in positive cake and anti-cake winding process.
4. winding mould as claimed in claim 3, is characterized in that: described the first template (7) and the second template (8) adopt smooth, carrot-free nonmetallic materials to make; The first pressing plate (10) and the second pressing plate (11) adopt metal or expoxy glass Steel material to make; Interim catch (14) adopts polymethyl methacrylate or rigid plastics to make.
5. application rights requires the method for winding mould coiling high-temperature superconductor double-cake coils described in 3, it is characterized in that, described winding method adopts transposition coiling: 4 superconductive tapes are drawn from draw drum with certain angle, the first superconductive tape (1) and the second superconductive tape (2), after 0 ° of transposition mouthful coordinated transposition, are introduced the second template (8) by the first template (7); The 3rd superconductive tape (3) and the 4th superconductive tape (4) are positioned at the inner side of the first superconductive tape (1) and the second superconductive tape (2) at 0 ° of transposition mouth, the 3rd superconductive tape (3) and the 4th superconductive tape (4) are after 180 ° of transposition mouthful coordinated transpositions, by the first template (7), introduce the second template (8), 180 ° of transpositions mouthful, the 3rd superconductive tape (3) and the 4th superconductive tape (4) are positioned at the outside of superconductive tape (1) and (2); Like this, by the operation at two transposition mouths, the four-tape putting in order by the first superconductive tape (1) around superconductive tape, the second superconductive tape (2), the 3rd superconductive tape (3), the 4th superconductive tape (4) becomes the 4th superconductive tape (4), the 3rd superconductive tape (3), the second superconductive tape (2), the first superconductive tape (1).
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| CN106783148A (en) * | 2017-01-19 | 2017-05-31 | 宋当建 | A kind of anti-cake machine for automatic working device people of power transformer pie winding |
| CN107578915A (en) * | 2017-10-20 | 2018-01-12 | 广东电网有限责任公司电力科学研究院 | A kind of double cake producing devices of high-temperature superconductor band |
| CN108399984A (en) * | 2018-03-01 | 2018-08-14 | 南京理工大学 | A kind of enamel-cover harness continuous shifting method for shaping |
| CN108461275A (en) * | 2018-03-27 | 2018-08-28 | 西安聚能超导磁体科技有限公司 | A kind of winding method of the double cakes of high temperature superconductor coil biobelt |
| CN108922771A (en) * | 2018-07-13 | 2018-11-30 | 西安聚能超导磁体科技有限公司 | A kind of accurate coiling device and method for two polar curve circle of major diameter |
| CN111899963A (en) * | 2020-07-31 | 2020-11-06 | 广州市一变电气设备有限公司 | Transformer coil and energy-saving transformer |
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| CN102568771A (en) * | 2010-12-14 | 2012-07-11 | 柳州索能特种变压器有限责任公司 | '8'-shaped double-pancake coil of transformer and manufacturing and assembling method thereof |
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| CN201075331Y (en) * | 2007-05-09 | 2008-06-18 | 上海昊德电气有限公司 | Bar structure of phase shift commutation dry-type transformer |
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Cited By (8)
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| CN106783148A (en) * | 2017-01-19 | 2017-05-31 | 宋当建 | A kind of anti-cake machine for automatic working device people of power transformer pie winding |
| CN107578915A (en) * | 2017-10-20 | 2018-01-12 | 广东电网有限责任公司电力科学研究院 | A kind of double cake producing devices of high-temperature superconductor band |
| CN107578915B (en) * | 2017-10-20 | 2023-12-19 | 广东电网有限责任公司电力科学研究院 | Double-cake manufacturing device for high-temperature superconducting strip |
| CN108399984A (en) * | 2018-03-01 | 2018-08-14 | 南京理工大学 | A kind of enamel-cover harness continuous shifting method for shaping |
| CN108461275A (en) * | 2018-03-27 | 2018-08-28 | 西安聚能超导磁体科技有限公司 | A kind of winding method of the double cakes of high temperature superconductor coil biobelt |
| CN108922771A (en) * | 2018-07-13 | 2018-11-30 | 西安聚能超导磁体科技有限公司 | A kind of accurate coiling device and method for two polar curve circle of major diameter |
| CN111899963A (en) * | 2020-07-31 | 2020-11-06 | 广州市一变电气设备有限公司 | Transformer coil and energy-saving transformer |
| CN111899963B (en) * | 2020-07-31 | 2021-04-27 | 广州市一变电气设备有限公司 | Transformer coil and energy-saving transformer |
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