JP2004127764A - Transposed superconducting tape unit and superconductive application apparatus using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transposed superconducting tape unit which can hold a transposed twist structure well regardless of a transposed passage length. <P>SOLUTION: In the transposed superconducting tape unit 10, a plurality of superconducting tapes 20 are transposed and twisted, and each transposed passage portion 51 is kept in shape by at least one tape 40 for keeping the shape to bind this. In addition, a part of each tape 40 for keeping the shape is attached onto its own other part or other tape for keeping the shape, and the tape 40 for keeping the shape and the superconducting tape 20 preferably are not attached to each other. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dislocation superconducting tape unit formed by twisting a plurality of superconducting tapes into dislocations and a superconducting applied device using the same, and more particularly, to a dislocation superconducting tape unit capable of favorably retaining a dislocation twisting structure. is there.
[0002]
[Prior art]
As a superconducting cable that suppresses drift when an alternating current is applied, a superconducting cable in which a dislocation superconducting tape unit in which a plurality of superconducting tapes are transposed and twisted around a former in a spiral shape is known (for example, Patent Document 1). reference.).
[0003]
Hereinafter, an example of a conventional transposed superconducting tape unit used for such a superconducting cable will be described with reference to FIG. 6A is a perspective view, and FIG. 6B is a sectional view taken along line XX ′.
As shown in FIG. 6, the conventional dislocation superconducting tape unit 200 is obtained by disposing and twisting a plurality of (12 in the drawing) superconducting tapes 210. Each superconducting tape 210 is a tape-shaped superconducting tape in which a superconducting multifilamentary wire (superconducting wire) having a core portion made of a superconductor or a material that becomes a superconductor by heat treatment is flattened inside a base made of a sheath material. It is mainly composed of a strand 211, and has a high resistance film 212 formed on the surface thereof. As the superconducting element wire 211, Bi ₂ Sr ₂ Ca ₁ Cu ₂ O _x (Bi2212), Bi ₂ Sr ₂ Ca ₂ Cu ₃ O _y Bi-based wires having a core portion made of (Bi2223) or the like are widely used.
[0004]
Further, in the dislocation superconducting tape unit 200, predetermined portions between adjacent dislocation transition portions 220, 220 (non-dislocation transition portions 230) are bound by an adhesive tape 240 in order to maintain the structure. The adhesive tape 240 has one surface coated with an adhesive, and is adhered and fixed to the superconducting tape 210 via the adhesive.
[0005]
[Patent Document 1] JP-A-11-203961
[0006]
[Problems to be solved by the invention]
In conventional dislocation superconducting tape units, Bi-based wires having a width of 2 mm or less and a thickness of 0.2 mm or more have been widely used as tape-like superconducting wires, but higher current density and mechanical strength can be obtained. From, Y ₁ Ba ₂ Cu ₃ O _7-x Use of a Y-based wire having a core portion made of (Y123) or the like has been studied.
[0007]
Here, the Y-based wire currently mainly manufactured has a width of about 10 mm and a thickness of about 0.1 mm, and is wider and thinner than the Bi-based wire.
In Japanese Patent Application No. 2002-218929, the inventor of the present application discloses that in order to prevent lifting of a dislocation transition portion, the thickness t (mm), the width W (mm), and the dislocation transition length L (mm) are (W) ² /L·t)≦0.313, and when a Y-based wire having a wider width W and a smaller thickness t (higher aspect ratio) than a Bi-based wire is used, the dislocation crossover is required. It is preferable to increase the length L to satisfy the above expression.
[0008]
However, when the translocation length L is increased, the following inconvenience occurs.
That is, in the above-described dislocation superconducting tape unit, as shown in FIG. 6B, each dislocation transition portion is parallel to the width direction of the dislocation superconducting tape unit except for the superconducting tape located at the uppermost portion and the lowermost portion. The superconducting tape has a configuration in which a pair of superconducting tapes are stacked in the thickness direction. However, when the dislocation transition length L is increased to, for example, more than 250 mm, the dislocation transition part shown in FIG. 7), a pair of superconducting tapes that should be arranged in parallel in the width direction partially overlap, or an excessive gap is formed between them as shown in FIG. It has been found that the twist structure is easily disturbed. If the dislocation twist structure is disturbed, there is a possibility that when a superconducting cable is configured, the AC loss when an AC current is applied increases and a drift occurs, for example, causing characteristic deterioration.
[0009]
Further, in the above-described conventional dislocation superconducting tape unit, there is also the following danger irrespective of the dislocation transition length.
That is, when the dislocation superconducting tape unit is applied to a superconducting cable, a bending strain is applied to the dislocation superconducting tape unit in a step of winding the dislocation superconducting tape unit around a former, and the like. In each of the superconducting tapes, the superconducting tape is adhered to the adhesive tape, and multiple superconducting tapes are integrated, so that bending distortion is not relaxed, bending strain is applied to each superconducting tape more than the allowable value, and dislocation twisting There was a risk that the structure would be disturbed.
[0010]
Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dislocation superconducting tape unit capable of favorably maintaining a dislocation twist structure regardless of a transposition transition length. It is another object of the present invention to provide a dislocation superconducting tape unit capable of favorably maintaining a dislocation twist structure even when bending strain is applied. Still another object of the present invention is to provide a superconducting application device using a dislocation superconducting tape unit capable of favorably maintaining a dislocation twist structure.
[0011]
[Means for Solving the Problems]
The present inventor has studied to solve the above problems, and as a result, has invented the following dislocation superconducting tape unit and superconducting applied device.
[0012]
In the dislocation superconducting tape unit of the present invention, in a dislocation superconducting tape unit in which a plurality of superconducting tapes are dislocation twisted, each dislocation transition portion is shaped by at least one shape retaining tape that binds the dislocation transition portions. It is characterized by.
In this specification, the term “superconducting tape” means a tape-shaped superconducting conductor. In addition, the “transposition crossover portion” means a portion where the superconducting tape which extends in a non-parallel direction to the longitudinal direction of the transposed superconducting tape unit and whose position is transposed exists.
[0013]
As a specific mode of the dislocation superconducting tape unit of the present invention, the dislocation transition portion is a group of superconducting tapes composed of a plurality of superconducting tapes whose positions are not displaced, And the superconducting tape group is shaped by a first shape-preserving tape that binds the superconducting tape group, and the dislocation superconducting tape is provided outside the first shape-preserving tape. One that is restrained to the superconducting tape group by the locked second shape retaining tape is exemplified. Here, the superconducting tape group is composed of two superconducting tapes or superconducting tape laminates arranged in parallel in the width direction of the dislocation superconducting tape unit, and a part of the first shape-retaining tape is formed by replacing the superconducting tape group. It is preferable to be interposed between the two superconducting tapes or the superconducting tape laminate to constitute.
Further, it is preferable that a part of each shape retaining tape is adhered to another part of itself or another shape retaining tape, and the shape retaining tape and the superconducting tape are not adhered. . Specifically, the first shape-retaining tape is wound at least one round around the superconducting tape group, and the end on the winding end side is formed of the other of the first shape-retaining tape. It is preferable that the second shape-retaining tape be affixed to a portion, and that a part of the second shape-retaining tape be affixed to the outside of the first shape-retaining tape.
[0014]
The superconducting application device of the present invention is configured using the above-described dislocation superconducting tape unit of the present invention. Specific examples of the superconducting applied device include a superconducting cable, a superconducting transformer, a superconducting magnet, a superconducting current limiter, and the like.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
[Superconducting tape unit]
Next, the configuration of the dislocation superconducting tape unit according to the embodiment of the present invention will be described with reference to FIG. 1A is a perspective view, and FIGS. 1B and 1C are cross-sectional views taken along line AA ′. In addition, (b) is a figure which shows the state which does not wind the tape for shape retention mentioned later, and (c) is a figure which shows the state which wound the tape for shape retention.
[0016]
As shown in FIG. 1A, the transposed superconducting tape unit 10 of the present embodiment transposes twelve superconducting tapes 20 so that each superconducting tape 20 is displaced in its longitudinal direction by sequentially changing its position. It is twisted and bound at predetermined intervals by a shape-retaining tape. In the present embodiment, each non-dislocation transition portion 52 located between the adjacent dislocation transition portions 51 is provided with a binding portion 61 that is shaped by the shape-retaining tape 45, and each of the dislocation transition portions 51 is shaped. A binding portion 60 bound by the use tape 40 is provided, which is a characteristic feature.
[0017]
As shown in FIGS. 1B and 1C, the superconducting tape 20 is a tape-shaped superconducting wire 21 on which the surface is subjected to a sulfidation treatment to form a high-resistance film 22. Is preferably rectangular.
The tape-shaped superconducting element wire 21 is obtained by flattening a superconducting multi-core element wire (superconducting element wire) having a circular cross section by rolling or the like. The superconducting multifilamentary wire is one in which a plurality of cores made of a superconductor such as a superconducting filament or a material that becomes a superconductor by heat treatment are provided inside a base made of a sheath material such as Ag, Pb, or Au. As a superconductor constituting the core portion or a material that becomes a superconductor by heat treatment, Bi is used. ₂ Sr ₂ Ca ₁ Cu ₂ O _x (Bi2212), Bi ₂ Sr ₂ Ca ₂ Cu ₃ O _y (Bi2223), Bi _1.6 Pb _0.4 Sr ₂ Ca ₂ Cu ₃ O _x Y on a metal substrate such as an oxide superconducting material or Hastelloy via a yttrium-stabilized zirconia (YSZ) intermediate layer. ₁ Ba ₂ Cu ₃ O _7-x A high-temperature superconducting material such as an oxide superconducting material on which (Y123) is formed, Nb ₃ Sn, Nb ₃ A low-temperature superconducting material having a composition represented by Al or the like can be exemplified. These may be used alone or in combination of two or more.
The high-resistance film 22 is made of a sulfide (for example, silver sulfide) of a sheath material constituting the matrix, and is configured to have a higher electrical resistivity than the sheath material constituting the matrix. Further, the high resistance film 22 may be formed of an ultraviolet curable resin film.
[0018]
Hereinafter, the structure of the binding portion will be described in detail.
In the binding part 61 of the non-dislocation transition part 52, the dislocation superconducting tape unit 10 is, as in the related art, a single shape-retaining tape wound at least once around all the superconducting tapes 20 constituting the non-dislocation transition part 52. It is bound by the tape 45, but the end on the winding end side is adhered and fixed to the other part of the shape retaining tape 45 via an adhesive, and the shape retaining tape 45 and the superconducting tape 20 are adhered. It is different from the conventional one.
[0019]
Next, the structure of the binding portion 60 of the dislocation transition portion 51 will be described in detail.
In the dislocation superconducting tape unit 10 in which the twelve superconducting tapes 20 are twisted with dislocations, as shown in FIGS. 1A to 1C, each dislocation transition part 51 is arranged in the longitudinal direction of the dislocation superconducting tape unit 10. A superconducting tape group 30A in which ten superconducting tapes 20 extending in a parallel direction and not displaced are bundled, and a position extending in a non-parallel direction with respect to a longitudinal direction of the transposed superconducting tape unit 10 is set. It consists of a pair of transposed superconducting tapes 20A and 20B that have been transposed. The pair of dislocation superconducting tapes 20A and 20B are arranged outside the superconducting tape group 30A so as to sandwich the superconducting tape group 30A from above and below.
Further, the superconducting tape group 30A is a group in which two superconducting tape laminates 30B and 30C in which five superconducting tapes 20 are laminated in the thickness direction are arranged in parallel in the width direction of the dislocation superconducting tape unit 10. In other words, a pair of superconducting tapes 20C and 20D arranged in parallel in the width direction are stacked in five layers in the thickness direction.
[0020]
The structure of the transition dislocation portion is not limited to the dislocation superconducting tape unit in which twelve superconducting tapes are dislocation twisted, but may be a dislocation superconducting tape unit in which four or more even superconducting tapes are dislocation twisted. However, in a dislocation superconducting tape unit in which four superconducting tapes are dislocation twisted, a superconducting tape group including a plurality of superconducting tapes whose positions are not displaced is replaced by a dislocation superconducting tape unit instead of two superconducting tape laminates. It is composed of two superconducting tapes arranged in parallel in the width direction.
[0021]
As shown in FIG. 1C, the dislocation superconducting tape unit 10 is bound by a plurality of shape-retaining tapes 40 (40 </ b> A to 40 </ b> C) at each binding portion 60. That is, the superconducting tape group 30A is bound by the shape preserving tape (first shape preserving tape) 40A, and the pair of dislocation superconducting tapes 20A and 20B arranged with the superconducting tape group 30A interposed therebetween are each a shape preserving tape. The superconducting tape group 30A is constrained by the shape-retaining tapes (second shape-retaining tapes) 40B and 40C locked outside the 40A.
More specifically, the shape-preserving tape 40A that binds the superconducting tape group 30A starts from the lower end between the two superconducting tape laminates 30B and 30C that constitute the superconducting tape group 30A, and the superconducting tape laminates 30B and 30C It is guided upward through the space, and is led out around the superconducting tape group 30A. Further, at least one round is wound around the superconducting tape group 30A so as to at least partially overlap the superconducting tape group 30A, and the end of the shape retaining tape 40A on the winding end side is the other part (the winding end side of the shape retaining tape 40A). (A portion that is arranged to overlap with the lower side of the end portion) via an adhesive 41. As shown, the shape-retaining tape 40A led out around the superconducting tape group 30A is wound so as to pass between the superconducting tape group 30A and the pair of dislocation superconducting tapes 20A, 20B. The adhesive 41 is applied to one surface of one end (the end on the winding end side) of the shape-retaining tape 40A before binding the superconducting tape group 30A.
[0022]
On the other hand, in FIG. 1 (c), the shape preserving tape 40B for restraining the dislocation superconducting tape 20A disposed above the superconducting tape group 30A to the superconducting tape group 30A is provided on the upper surface of the dislocation superconducting tape 20A (the superconducting tape group). 30A side) and both side surfaces. Further, the shape-retaining tape 40B is disposed so as to extend to both sides from the lower end portions of both sides of the dislocation superconducting tape 20A, and these parts hold the superconducting tape group 30A through the adhesive 42. It is stuck on the upper surface side of the forming tape 40A.
Similarly, in FIG. 1 (c), the shape preserving tape 40C for binding the dislocation superconducting tape 20B disposed below the superconducting tape group 30A to the superconducting tape group 30A is formed on the lower surface (superconducting superconducting tape 20B). (The surface opposite to the tape group 30A side) and both side surfaces. Further, the shape-retaining tape 40C is disposed so as to extend to both sides from the upper end portions of both side surfaces of the dislocation superconducting tape 20B, and these portions hold the superconducting tape group 30A through the adhesive 43. It is stuck on the lower surface side of the forming tape 40A.
The pressure-sensitive adhesives 42 and 43 are applied to one surface of both ends of the shape-retaining tapes 40B and 40C in advance.
[0023]
In the present embodiment, examples of the material of the shape retaining tapes 40A to 40C and 45 include a polyimide tape such as Kapton (trade name) manufactured by duPont, a polypropylene tape, a polyester tape, and the like.
[0024]
According to the dislocation superconducting tape unit 10 of the present embodiment, since the binding portion 60 bound by the shape-retaining tape 40 is provided at each dislocation transition portion 51, the movement of the superconducting tape 20 at each dislocation transition portion 51. Can be restrained. As a result, the structure of the dislocation transition portion 51, that is, the dislocation twist structure, can be favorably maintained regardless of the dislocation transition length (length of the dislocation transition portion 51).
[0025]
Further, in the present embodiment, a configuration is adopted in which the plurality of superconducting tapes 20 constituting the dislocation superconducting tape unit 10 are bound in the binding portion 60 according to the extending direction thereof. That is, a superconducting tape group 30A composed of a plurality of superconducting tapes 20 extending in a direction parallel to the longitudinal direction of the dislocation superconducting tape unit 10 and the superconducting tape group 30A interposed therebetween are arranged. A configuration was adopted in which the tape was divided into a pair of dislocation superconducting tapes 20A and 20B extending in a non-parallel direction to the longitudinal direction and bound.
[0026]
Here, in the dislocation crossover part 51, the superconducting tape group 30A has a configuration in which a pair of superconducting tapes 20C and 20D arranged in parallel in the width direction are stacked in the thickness direction. By wrapping the shape retaining tape 40A around the superconducting tape group 30A, the superconducting tape group 30A can be satisfactorily restrained, and the form thereof can be favorably maintained. In particular, in the present embodiment, since a configuration is adopted in which a part of the shape-retaining tape 40A is interposed between the two superconducting tape laminates 30B and 30C constituting the superconducting tape group 30A, they are arranged in parallel in the width direction. The pair of superconducting tapes 20C and 20D can be separated from each other, and the fastening force to the superconducting tape laminates 30B and 30C can be increased. Form changes such as overlapping and formation of an excessive gap between them can be suppressed, and the form can be maintained well.
[0027]
In addition, the pair of dislocation superconducting tapes 20A and 20B arranged with the superconducting tape group 30A interposed therebetween is configured to be constrained to the superconducting tape group 30A using another shape retaining tape 40B and 40C. Can be satisfactorily restrained. In particular, in the present embodiment, the shape-retaining tapes 40B and 40C are arranged along the surface opposite to the superconducting tape group 30A side and both side surfaces of the dislocation superconducting tapes 20A and 20B, and the dislocation superconducting tapes 20A and 20B. It is disposed so as to extend to both sides from both sides, and the portion disposed to extend to both sides from both sides is adhered and fixed to the shape-retaining tape 40A that binds the superconducting tape group 30A through the adhesive 42. Since the configuration is adopted, the movement in the width direction can be restrained without obstructing the movement in the longitudinal direction of the dislocation superconducting tapes 20A and 20B, which is preferable.
[0028]
In this embodiment, the superconducting tape group 30A is bound by one shape retaining tape 40A, and the pair of dislocation superconducting tapes 20A and 20B are bound to the superconducting tape group 30A by the shape retaining tapes 40B and 40C, respectively. However, the number of shape retaining tapes to be used and the binding structure can be appropriately designed. For example, the superconducting tape group 30A may be bound by a plurality of shape retaining tapes, and the pair of dislocation superconducting tapes 20A and 20B may be bound by the same shape retaining tape.
[0029]
Further, as described above, in the present embodiment, the movement of the superconducting tape 20 of each dislocation transition portion 51 can be restrained, so that even when bending strain is applied, the dislocation twist structure can be favorably maintained. .
Further, in the present embodiment, the shape retaining tapes 40A to 40C and 45 and the superconducting tape 20 are not attached to the binding portions 60 and 61, and a part of the shape retaining tapes 40A to 40C and 45 Or another tape for shape retention. This prevents the shape-retaining tapes 40A to 40C, 45 from being detached from the dislocation superconducting tape unit 10, and prevents the shape-retaining tapes 40A to 40C, 45 from being fixed to the superconducting tape 20. Are not restricted in the longitudinal direction. Also, each superconducting tape 20 was configured to be able to move somewhat in the width direction.
Therefore, when bending strain is applied to the dislocation superconducting tape unit 10, each superconducting tape 20 can be deformed or moved so as to reduce the stress, and the bending strain applied to each superconducting tape 20 can be reduced. it can. As a result, both the retention of the dislocation twist structure by the shape-retaining tapes 40A to 40C and 45 and the relaxation of the bending strain are combined, and the disturbance of the dislocation twist structure resulting from the bending strain can be significantly suppressed.
In the present embodiment, the configuration is adopted in which each of the shape retaining tapes 40A to 40C and 45 is adhered and fixed to another part of itself or another shape retaining tape via an adhesive. Instead, an adhesive may be used. Further, the tape itself may be fused without interposing an adhesive or the like.
[0030]
Further, in the present embodiment, the binding portions 60 and 61 are provided at each of the dislocation transition portions 51 and the non-dislocation transition portions 52. However, depending on the dislocation transition length and the like, each dislocation transition portion 51, A configuration in which a plurality of binding portions 60 and 61 are provided in each non-dislocation transition portion 52 may be adopted. Further, although the dislocation superconducting tape unit composed of an even number of superconducting tapes has been described, the present invention is also applicable to a dislocation superconducting tape unit composed of an odd number of superconducting tapes.
[0031]
[Superconducting applied equipment]
Next, an embodiment of a superconducting applied device using the dislocation superconducting tape unit of the above embodiment will be described.
(Superconducting cable)
FIG. 2 is a perspective view showing one embodiment of the superconducting cable.
The superconducting cable 70 of the present embodiment has a structure in which drift is suppressed when an alternating current is applied, and the above-described dislocation superconducting tape unit 10 is spirally wound around a pipe-shaped former (tube) 77. A plurality of superconductor layers 84 are laminated, and an interlayer insulating layer 85 made of an insulating tape or the like is formed between the superconductor layers 84 and 84. Outside the superconducting cable 70, a semiconductor layer, an insulating layer, a protective layer, a heat insulating layer, an anticorrosion layer, and the like (not shown) are formed and used as needed.
The former 77 is made of stainless steel or the like, and the surface thereof is subjected to an insulation treatment in order to suppress the flow of electricity between the former 77 and the dislocation superconducting tape unit 10. The internal cavity is used as a flow path for a cooling medium such as liquid nitrogen, so that the plurality of superconducting tapes 20 constituting the dislocation superconducting tape unit 10 are cooled.
[0032]
(Superconducting magnet)
FIG. 3 is a perspective view showing one embodiment of the superconducting magnet.
The superconducting magnet 90 of the present embodiment is obtained by winding the above-described dislocation superconducting tape unit 10 around a winding frame 93 including a winding drum 91 and a pair of flange plates 92. An end portion 95a of the dislocation superconducting tape unit 10 is drawn out of the flange plate 92 through a notch-shaped passage hole 92a formed in a peripheral portion of the flange plate 92, and the dislocation passing through the passage hole 92a. The front portion 95 b of the drawn portion of the superconducting tape unit 10 is covered with a reinforcing plate 97 fixed to the outer peripheral edge of the flange plate 92.
[0033]
(Superconducting transformer)
FIG. 4 is a perspective view showing one embodiment of the superconducting transformer. FIG. 5 is a sectional view taken along line BB ′ of FIG.
The superconducting transformer 100 according to the present embodiment includes a bobbin 102 having a cylindrical winding drum 102a, and the above-described dislocation superconducting tape wound in multiple layers from one axial end to the other axial end of the winding drum 102a of the bobbin 102. It comprises a unit 10 and a spacer 105 for separating the layers of the dislocation superconducting tape unit 10 from each other. The bobbin 102 includes a winding drum 102a and flanges 102b and 102c provided at both ends of the bobbin 102. The dislocation superconducting tape unit 10 is wound around the winding drum 102a of the bobbin 102 in multiple layers. .
The spacer 105 is provided to separate the layers of the dislocation superconducting tape unit 10 so that the dislocation superconducting tape unit 10 is efficiently cooled by the refrigerant, and the longitudinal direction thereof is along the bobbin axis direction. A plurality of bobbins 102 are provided at intervals in the circumferential direction.
The spacing between the layers of the dislocation superconducting tape unit 10 and the spacing between the dislocation superconducting tape unit 10 and the flanges 102b and 102c are formed as cooling channels 104 that serve as refrigerant flow paths. When the superconducting transformer 100 is used, the superconducting transformer 100 can be cooled by being immersed in a coolant such as liquid helium in order to maintain the superconducting state of the dislocation superconducting tape unit 10.
[0034]
The above-described superconducting cable 70, superconducting magnet 90, and superconducting transformer 100 are configured using the dislocation superconducting tape unit 10 that can favorably maintain the dislocation twist structure, so that the AC loss when AC current is applied is reduced. Thus, the drift is suppressed and good characteristics are obtained.
[0035]
【The invention's effect】
As described in detail above, according to the present invention, it is possible to provide a dislocation superconducting tape unit capable of favorably maintaining a dislocation twist structure regardless of the dislocation transition length. Further, it is possible to provide a dislocation superconducting tape unit capable of favorably maintaining a dislocation twist structure even when bending strain is applied. Further, by using these dislocation superconducting tape units, it is possible to provide a superconducting applied device having good characteristics.
[Brief description of the drawings]
FIG. 1 is a view showing a configuration of a dislocation superconducting tape unit according to an embodiment of the present invention, wherein (a) is a perspective view, and (b) and (c) are cross-sectional views.
FIG. 2 is a perspective view showing one embodiment of a superconducting cable using the transposed superconducting tape unit of the embodiment according to the present invention.
FIG. 3 is a perspective view showing one embodiment of a superconducting magnet using the dislocation superconducting tape unit of the embodiment according to the present invention.
FIG. 4 is a perspective view showing one embodiment of a superconducting transformer using the dislocation superconducting tape unit of the embodiment according to the present invention.
FIG. 5 is a sectional view taken along line BB ′ of FIG. 4;
6A and 6B are views showing an example of a conventional dislocation superconducting tape unit, wherein FIG. 6A is a perspective view and FIG. 6B is a sectional view.
FIG. 7 is a diagram for explaining a problem of a conventional dislocation superconducting tape unit.
[Explanation of symbols]
Reference numeral 10: dislocation superconducting tape unit, 20, 20A to 20D: superconducting tape, 30A: superconducting tape group, 30B, 30C: superconducting tape laminate, 40, 40A to 40C, 45 ... Forming tape, 41 to 43: adhesive, 51: dislocation transition portion, 52: non-dislocation transition portion, 60, 61: binding portion, 70: superconducting cable (superconducting applied device) , 90 ... superconducting magnet (superconducting applied equipment), 100 ... superconducting transformer (superconducting applied equipment).

Claims (7)

In a dislocation superconducting tape unit in which a plurality of superconducting tapes are twisted with dislocations,
A dislocation superconducting tape unit characterized in that each dislocation crossover portion is shape-preserved by at least one shape preserving tape that binds the dislocation crossover portions. The dislocation crossover portion, a superconducting tape group consisting of a plurality of superconducting tapes whose positions have not been displaced, and a plurality of dislocation superconducting tapes whose positions are displaced and arranged outside thereof,
The superconducting tape group is shape-retained by a first shape-retaining tape that binds the superconducting tapes,
2. The transposition according to claim 1, wherein the dislocation superconducting tape is restrained by the group of superconducting tapes by a second shape preserving tape locked to the outside of the first shape preserving tape. Superconducting tape unit. The superconducting tape group comprises two superconducting tapes or superconducting tape laminates arranged in parallel in the width direction of the dislocation superconducting tape unit,
3. The dislocation superconducting device according to claim 2, wherein a part of the first shape-retaining tape is interposed between the two superconducting tapes or the superconducting tape laminate constituting the superconducting tape group. 4. Tape unit. A part of each shape-retaining tape is attached to another part of itself or another shape-retaining tape, and the shape-retaining tape and the superconducting tape are not attached. The dislocation superconducting tape unit according to claim 2 or 3. The first shape-retaining tape is wound at least once around the superconducting tape group, and the end on the winding end side is attached to another portion of the first shape-retaining tape. The dislocation superconducting tape unit according to claim 4, wherein: 6. The dislocation superconducting tape unit according to claim 4, wherein a part of the second shape retaining tape is adhered to the outside of the first shape retaining tape. 7. A superconducting application device using the dislocation superconducting tape unit according to any one of claims 1 to 6.

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