JP6168751B2 - Superconducting coil manufacturing apparatus and manufacturing method - Google Patents

Description

The present invention relates to a superconducting coil manufacturing apparatus and manufacturing method .

  As a superconducting wire used for a superconducting coil, for example, there is a thin film superconducting wire having a multilayer structure formed by laminating a tape-shaped metal substrate, an intermediate layer, an RE-based oxide superconducting layer, and a protective metal layer.

  By the way, since a superconducting coil is often used in a state of being impregnated with a resin in general, a superconducting coil formed by winding a thin film superconducting wire having a multilayer structure as described above around a winding frame, It is very weak to the tensile stress (peeling stress) in the wire stacking direction caused by the difference in thermal shrinkage with the wire, causing delamination and cracks in the superconducting thin film, and stable superconducting properties may not be obtained. is there.

  Further, in a non-circular coil having a so-called racetrack shape formed by a pair of opposing semicircles and a pair of straight portions connected thereto, when winding the straight portions, the winding tension Since the compressive force is difficult to be applied, the superconducting wire is loosened. For this reason, the amount of resin between turns increases, and not only the dimensional accuracy as designed cannot be obtained, but also superconducting characteristics tend to deteriorate due to excessive peeling stress.

  In consideration of the above circumstances, the racetrack-shaped superconductivity is obtained by extruding the resin between the turns in the straight portion by horizontally moving the winding frame in the direction of the straight portion while pressing the roller provided in the winding device against the straight portion. A technique for manufacturing a coil is described in Patent Document 1, for example.

Japanese Patent No. 4220175

  However, in the method of manufacturing a conventional racetrack-shaped superconducting coil as described in Patent Document 1 described above, since there are two straight portions of the superconducting coil during one turn of the winding base, It is necessary to perform a process of extruding the resin in a state where the winding base is temporarily stopped every half-turn, and the manufacturing man-hour is increased. That is, in the method for manufacturing a superconducting coil described in Patent Document 1 described above, the step of extruding resin while winding cannot be performed, and there is room for further improvement in terms of manufacturing man-hours.

  The present invention has been made in view of the above circumstances, and suppresses an increase in the excess amount of resin between the turns of the superconducting coil, further reducing the number of manufacturing steps, a superconducting coil manufacturing apparatus and manufacturing method, and a superconducting coil. The purpose is to provide.

A superconducting coil manufacturing apparatus according to an embodiment of the present invention is a superconducting coil manufacturing apparatus formed by winding a superconducting wire around a winding frame in order to solve the above-described problem, and supplying the superconducting wire Means, rotating means for rotating a winding base for supporting and fixing the winding frame, and the superconducting wire and the winding supplied from the supply means on the outer peripheral surface of the winding portion wound around the winding frame The presser roller at a position where it comes into contact, and a presser roller that applies a constant load to the winding part; a load direction that receives the force from the winding part and loads the presser roller onto the winding part; and a direction opposite to the load direction A slide guide that slides in a direction, and a direction in which the slide guide slides the presser roller is a first direction that is inclined with respect to a vertical direction .

  In order to solve the above-described problems, a method for manufacturing a superconducting coil according to an embodiment of the present invention uses the superconducting coil manufacturing apparatus according to an embodiment of the present invention to wind the superconducting wire around the winding frame and perform superconductivity. A method of manufacturing a coil, characterized in that a step of extruding excess resin out of the resin applied to the superconducting wire without temporarily stopping the rotation of the winding base during winding of the superconducting wire. And

  According to the present invention, an increase in the excess amount of resin between the turns of the superconducting coil can be suppressed, and the number of manufacturing steps can be further reduced.

The block diagram of the superconducting wire (superconducting tape wire) used when forming the superconducting coil which concerns on embodiment of this invention. The block diagram which shows the structure of the manufacturing apparatus of the superconducting coil which concerns on the 1st Embodiment of this invention (a winding frame is a race track shape). 1 is a side sectional view of a winding device provided in a superconducting coil manufacturing apparatus according to a first embodiment of the present invention. The elements on larger scale of the winding apparatus in the manufacturing apparatus of the superconducting coil which concerns on the 1st Embodiment of this invention. The block diagram which shows the structure of the manufacturing apparatus of the superconducting coil which concerns on the 1st Embodiment of this invention (a winding frame is simple circular shape). The elements on larger scale of the winding apparatus in the manufacturing apparatus of the superconducting coil which concerns on the 2nd Embodiment of this invention. The elements on larger scale of the winding apparatus in the superconducting coil manufacturing apparatus which concerns on the 2nd Embodiment of this invention (The state of the phase different from the phase shown by FIG. 6 is shown). The partial block diagram of the manufacturing apparatus of the superconducting coil which concerns on the 3rd Embodiment of this invention. It is explanatory drawing explaining the manufacturing method of the superconducting coil which concerns on the 4th Embodiment of this invention, and is the elements on larger scale of the winding apparatus in the manufacturing apparatus of the superconducting coil which concerns on embodiment of this invention. It is explanatory drawing explaining the manufacturing method of the superconducting coil which concerns on the 4th Embodiment of this invention, and is sectional drawing of the winding apparatus in the manufacturing apparatus of the superconducting coil which concerns on embodiment of this invention.

  Hereinafter, a superconducting coil manufacturing apparatus and manufacturing method and a superconducting coil according to embodiments of the present invention will be described with reference to the accompanying drawings.

  Prior to describing the superconducting coil manufacturing apparatus and method and the superconducting coil according to the embodiment of the present invention, first, the superconducting wire wound when forming the superconducting coil according to the embodiment of the present invention will be described.

(Superconducting wire)
FIG. 1 is a configuration diagram of a superconducting tape wire (thin film superconducting wire) 1 which is an example of a superconducting wire used when forming a superconducting coil according to an embodiment of the present invention.

  The superconducting tape wire 1 is composed of a multi-layer wire having a predetermined width, and has at least a tape substrate 2, an intermediate layer 3, and a superconducting layer 4, both surfaces of which are covered with a stabilizing layer 5. ing. Moreover, the thin film superconducting wire 1 can be provided with an alignment layer 6 between the tape substrate 2 and the intermediate layer 3 and a protective layer 7 between the superconducting layer 4 and the stabilization layer 5 as necessary.

  The tape substrate 2 is formed of a material such as a nickel alloy such as stainless steel or Hastelloy (registered trademark), a silver alloy, or the like.

  The intermediate layer 3 is a diffusion prevention layer and is made of a material such as cerium oxide, YSZ, magnesium oxide, yttrium oxide, ytterbium oxide, barium zirconia, and is formed on the tape substrate 2.

The superconducting layer 4 is made of, for example, a superconducting thin film having a RE123-based composition (such as RE ₁ B ₂ C ₃ O ₇ ). Note that “ RE ” in “ RE ₁ B ₂ C ₃ O ₇ ” is at least one of rare earth elements (for example, neodymium (Nd), gadolinium (Gd), holmium (Ho), samarium (Sm), etc.) and yttrium elements. “B” means barium (Ba), “C” means copper (Cu), and “O” means oxygen (O).

  The stabilization layer 5 is provided for the purpose of preventing the superconducting layer 4 from burning when excessive electricity flows through the superconducting layer 4 and is made of conductive silver, copper, or the like.

  The orientation layer 6 is provided for the purpose of orienting the intermediate layer 3 on the tape substrate 2 and is made of magnesium oxide (MgO) or the like. Note that this can be omitted when an oriented substrate is used.

  The protective layer 7 is provided for the purpose of preventing the superconducting layer 4 from being deteriorated by contact with moisture in the air, and is made of silver or the like. The protective layer 7 also serves to prevent the superconducting layer 4 from burning when electricity flows excessively in the superconducting layer 4.

  The tape width of such a multilayer superconducting tape wire 1 is, for example, 3 mm to 12 mm, and the thickness is 0.1 to 0.2 mm. The superconducting tape wire 1 is excellent in mechanical strength in the longitudinal direction, but is fragile to tensile stress (peeling stress) in the thin film stacking direction, that is, in the direction perpendicular to the tape surface.

  The superconducting coil manufacturing apparatus and manufacturing method according to the embodiment of the present invention are an apparatus and a method for manufacturing a superconducting coil by winding a superconducting wire including the superconducting tape wire 1 as described above. The winding of the superconducting wire can be performed, for example, by using a superconducting coil manufacturing apparatus according to an embodiment of the present invention.

  Moreover, the superconducting coil which concerns on embodiment of this invention is a superconducting coil manufactured by using the manufacturing method of the superconducting coil which concerns on embodiment of this invention.

[First Embodiment]
FIG. 2 is a configuration diagram showing a configuration of a superconducting coil manufacturing apparatus 10A which is an example of a superconducting coil manufacturing apparatus according to the first embodiment of the present invention, and FIG. 3 is a winding apparatus provided in the superconducting coil manufacturing apparatus 10A. FIG.

  The superconducting coil manufacturing apparatus 10A includes a supplying device 11 as a supplying means for supplying a wire, a tension device 12 that applies winding tension to the superconducting tape wire 1, and an impregnation tank 13 in which a resin to be applied to the superconducting tape wire 1 is stored. And a winding device 14 for winding the wire supplied from the supply device 11.

  The winding device 14 is formed by winding a superconducting tape wire 1 around a rotating machine 20 as a rotating means for rotating a winding base 17 that fixes a so-called racetrack-shaped winding frame 16 and the winding frame 16. The winding unit 30 is loaded with a presser roller 21 that applies a constant load to the winding unit 30 and presses the winding unit 30, and a presser roller 21 that receives a force from the winding frame 16 or the winding unit 30 that is in contact with the pressing roller 21. And a slide guide 22 that slides in a direction opposite to the load direction.

  The rotating machine 20 is, for example, a torque motor, a servo motor, or the like, and rotates the winding table 17 around the rotation axis.

  The presser roller 21 presses the outer peripheral surface of the winding part 30 by applying a constant load to the winding part 30. As a method of applying a constant load to the presser roller 21, for example, a method of applying a load by the weight of the presser roller 21 itself (self-weight), a method of using a load-loading mechanism for applying a load, or an object such as a weight 25 is used. There is a method of attaching to the presser roller 21.

  Any mechanism that can load the presser roller 21 with the generated constant load can be selected as the load loading mechanism. In the superconducting coil manufacturing apparatus 10A, for example, a spring mechanism such as a coil spring or a leaf spring, a piston mechanism in which gas is sealed in a cylinder, or a driving mechanism such as a compressor in which an electric motor is combined with these mechanisms is applied. be able to.

  As a method for attaching the object to the presser roller 21, for example, a weight 25 is attached to the central axis of the presser roller 21, and a constant load in the vertically downward direction is applied to the presser roller 21 by gravity acting on the weight 25. The method for attaching the object to the presser roller 21 is simpler than the method using the load loading mechanism. In addition, the magnitude of the load can be adjusted by adjusting the weight of the weight 25.

  Further, as the material of the presser roller 21, a metal such as iron, copper, stainless steel, or aluminum, or an engineering plastic such as a fluororesin or polyacetal excellent in releasability from a resin is preferable.

  The material of the presser roller 21 is appropriately selected in consideration of the method of loading the presser roller 21 and the like. For example, when a load is applied by the weight of the presser roller 21, it is necessary to apply a load corresponding to the weight 25 by the presser roller 21 itself, and thus a metal having a higher density is selected.

  Furthermore, the radius of the press roller 21 is preferably equal to or greater than the allowable bending radius of the superconducting tape wire 1. This is because even if the presser roller 21 bends the superconducting tape wire 1 instead of the winding portion 30, it is possible to prevent deterioration of the characteristics of the superconducting tape wire 1.

  The slide guide 22 is a component that supports the shaft portion 21a serving as the central axis of the presser roller 21 and slides the presser roller 21 along the guide portion 22a. For example, the superconducting coil manufacturing apparatus 10A shown in FIG. Then, the guide portion 22a of the slide guide 22 is fixed to the base 26 of the rotating machine 20 by a fixing tool 27 such as a screw so that the guide portion 22a is in the vertical direction (vertical direction in FIG. 2).

  The base 26 is provided with a plurality of fixing holes for fixing the slide guide 22, and by appropriately selecting the fixing holes, the position of the slide guide 22 and the direction of the guide portion 22 a (the slide guide 22 of the slide guide 22 are fixed). (Tilt) can be changed.

  When the winding frame 16 fixed to the winding table 17 is rotated by the rotating machine 20, the pressing roller 21 receives a force from the winding frame 16 or the winding portion 30 that is in contact with it, but the slide guide 22 is applied to the pressing roller 21. Due to the acting force, the presser roller 21 slides in the direction of the guide portion 22a, that is, the load direction applied to the winding portion 30 and the direction opposite to the load direction (up and down in the state shown in FIG. 2).

  In the superconducting coil manufacturing apparatus 10 </ b> A configured as described above, first, the superconducting tape wire 1 is sent out from the supply device 11 in synchronization with the winding speed of the winding device 14. The superconducting tape wire 1 sent out from the supply device 11 is first guided to the impregnation tank 13 by being wound by the weight 25 while being guided by the pulley 28 in the tension device 12.

  The superconducting tape wire 1 guided to the impregnation tank 13 is applied with a resin such as epoxy in the impregnation tank 13 and guided to the winding device 14.

  FIG. 4 is a partially enlarged view of the winding device 14 in the superconducting coil manufacturing apparatus 10A. More specifically, the superconducting tape wire 1 is wound around the outer periphery of the winding frame 16 supported and fixed on the winding base 17. It is a front view which shows the state currently rotated. In addition, the point O shown in the figure is the center point of rotation.

  In the winding device 14, the winding frame 16 is supported and fixed on the winding table 17, and the superconducting tape wire 1 is guided between the flange 16 a of the winding frame 16 and the winding table 17, and is pressed by the pressing roller 21. It is pressed from the outer peripheral side to the inner peripheral side. The presser roller 21 applies a constant load from the central axis of the presser roller 21 to the outer periphery of the winding unit 13 within a range in contact with the winding unit 13. In addition, the position where the pressing roller 21 loads the winding part 13 is preferably a position where the superconducting tape wire 1 contacts the winding part 13 from the viewpoint of pushing out excess resin without waste.

  When the rotating machine 20 rotates around the point O, the winding frame 16 supported and fixed on the winding base 17 rotates around the point O, and the superconducting tape wire 1 is wound around the outer periphery of the winding frame 16. Is done. At this time, the excess amount of resin applied to the superconducting tape wire 1 is continuously pushed out by the presser roller 21.

  Further, when the winding frame 16 rotates around the point O, the distance between the point O and the outer peripheral surface of the winding portion 13 changes, but the press roller 21 has a distance between the point O and the outer peripheral surface of the winding portion 13. Since the slide guide 22 can be slid and moved in conjunction with the fluctuations, the superconducting tape wire 1 can be continuously wound without stopping the rotating machine 20. When the superconducting tape wire 1 is wound, a winding part 13 is formed, and a superconducting coil is manufactured.

  According to the superconducting coil manufacturing apparatus 10A, the vertical position of the outer peripheral surface of the winding portion 30 moves as the winding frame 16 supported and fixed on the winding base 17 rotates around the point O. However, since the presser roller 21 slides in conjunction with the slide guide 22, the process of extruding the remainder of the resin applied to the superconducting tape wire 1 is continuously performed without stopping the rotation. Can do.

  That is, when manufacturing a racetrack-shaped superconducting coil, it has conventionally been necessary to perform a process of temporarily stopping and extruding the resin every half rotation during winding. However, in the superconducting coil manufacturing apparatus 10A, the winding base 17 As a result of being able to continuously extrude the resin while rotating, it is possible to continuously wind the superconducting tape wire 1, thereby suppressing an increase in manufacturing man-hours and lower-cost superconducting coils Can be manufactured.

  Further, according to the superconducting coil manufacturing apparatus 10A, since the load is always applied to the presser roller 21 in one direction, even if the compressive force due to the winding tension is weak, the excess amount of the resin applied to the superconducting tape wire 1 is reduced. It can be pushed out by the presser roller 21. Therefore, when manufacturing a racetrack-shaped superconducting coil, the excess amount of resin applied to the superconducting tape wire 1 can be firmly pushed out by the presser roller 21 even in a straight portion where the compressive force due to the winding tension is weakened. Further, it is possible to suppress an increase in the excess amount of the resin between the turns in the straight portion.

  The above description is an example of the case where the superconducting tape wire 1 is wound using a so-called racetrack-shaped winding frame 16 (FIGS. 2 to 4), but can be manufactured by the superconducting coil manufacturing apparatus 10A. The shape of such a superconducting coil is not necessarily limited to a racetrack shape.

  For example, as shown in FIG. 5, instead of the racetrack-shaped winding frame 16, a simple circular winding frame 29 is set on the winding base 17 and the superconducting tape wire 1 is wound. A superconducting coil can be manufactured. In addition, the code | symbol 29a in a figure is a flange of the winding frame 29. FIG.

  In addition to the circular shape, an elliptical shape, a saddle shape, a shape in which a plurality of arc portions and straight portions are connected, or a non-circular shape in which two pairs of semicircles having different radii are combined can be used as a race track shape or a circular shape. Similar to the shape of the superconducting coil, the superconducting tape wire 1 can be continuously wound without performing the step of extruding the resin in a temporarily stopped state.

[Second Embodiment]
6 and 7 are partially enlarged views of a winding device in a superconducting coil manufacturing apparatus 10B, which is an example of a superconducting coil manufacturing apparatus according to the second embodiment of the present invention. 6 and 7 are different in the phase of the winding base 17 rotated by the rotating machine 20.

  The superconducting coil manufacturing apparatus 10B has substantially the same configuration as the superconducting coil 10A, but differs in the mounting angle of the slide guide 22 (direction of the guide portion 22a), that is, the direction in which the presser roller 21 is slid. However, there is no substantial difference in other respects. Therefore, in the description of the present embodiment, the difference will be mainly described, the same components as those of the superconducting coil 10A are denoted by the same reference numerals, and description thereof will be omitted.

  The superconducting coil manufacturing apparatus 10B is fixed to the rotating machine 20 with the direction of the guide portion 22a inclined with respect to the vertical direction with respect to the superconducting coil 10A, and the presser roller 21 applies a load obliquely downward. Configured to do. Here, the load applied obliquely downward may be a load (component force) obtained by disassembling a load applied vertically downward in two or more directions.

  In the superconducting coil manufacturing apparatus 10B configured as described above, the presser roller 21 applies a load obliquely downward, so that the presser roller 21 moves along the guide portion 22a in accordance with the rotation of the winding base 17, and is horizontal. Change the position of the direction. That is, in the superconducting coil manufacturing apparatus 10 </ b> B, the contact point between the presser roller 21 and the winding portion 30 moves in the horizontal direction in accordance with the rotation of the winding base 17.

  According to the superconducting coil manufacturing apparatus 10B, the superconducting tape wire 1 can be continuously wound while the contact point between the press roller 21 and the winding portion 30 is moved in the horizontal direction. Therefore, in the superconducting coil manufacturing apparatus 10 </ b> B, the presser roller 21 is moved so as to follow the movement of the boundary portion between the superconducting tape wire 1 and the winding portion 30 that moves in the horizontal direction in accordance with the rotation of the winding base 17. Even if the winding frame 16 is in any phase, the excess amount of resin applied to the superconducting tape wire 1 in the vicinity of the boundary portion between the superconducting tape wire 1 and the winding portion 30 can be further reduced.

  Further, according to the superconducting coil manufacturing apparatus 10B, the excess amount of the resin applied to the superconducting tape wire 1 can be pushed out more reliably. Therefore, when the racetrack-shaped superconducting coil is manufactured, the racetrack-shaped straight line is produced. It is possible to more reliably prevent an increase in the resin amount between turns in the section.

  Furthermore, according to the superconducting coil manufacturing apparatus 10B, the excess amount of the resin applied to the superconducting tape wire 1 is pushed out more reliably, and as a result, the space factor of the winding portion 30 is improved, so that the design field is reduced. It can be obtained with the tape wire 1. Therefore, the superconducting coil manufacturing apparatus 10B can manufacture a superconducting coil at a lower price.

  That is, according to the superconducting coil manufacturing apparatus 10B, the effect of preventing the increase in the amount of resin between turns and the effect of reducing the manufacturing cost of the superconducting coil are achieved from the superconducting coil manufacturing apparatus 10A. Can also be realized at a high level.

[Third Embodiment]
FIG. 8 is a partial configuration diagram of a superconducting coil manufacturing apparatus 10C which is an example of a superconducting coil manufacturing apparatus according to the third embodiment of the present invention.

  The superconducting coil manufacturing apparatus 10C is different from the superconducting coil manufacturing apparatus 10A and the superconducting coil manufacturing apparatus 10B in that it includes a plurality of supply devices 11 that supply wire, but the other points are not substantially different. Therefore, in the description of the present embodiment, the difference will be mainly described, the same components as those of the superconducting coils 10A and 10B are denoted by the same reference numerals, and description thereof will be omitted.

  The superconducting coil manufacturing apparatus 10C includes, for example, at least two supply devices 11 in the superconducting coil manufacturing apparatus 10A and the superconducting coil manufacturing apparatus 10B, and is configured to be capable of winding two types of wire.

  For example, the superconducting coil manufacturing apparatus 10 </ b> C shown in FIG. 8 includes two supply devices 11, one of the supply devices 11 is a superconducting tape wire 1, and the other supply device 11 is an insulating wire. A certain insulating wire 32 is sent out. In the superconducting coil manufacturing apparatus 10 </ b> C, the insulating wire 32 is guided to the winding device 14 with the winding tension applied in the same manner as the superconducting tape wire 1, and is wound together with the superconducting tape wire 1 in the winding device 14. .

  As the insulating wire 32, for example, an insulating material such as polyimide, polyester, polyurethane, polyamide, polyamideimide, polyvinyl formal, and polyvinyl butyral is preferable.

  According to the superconducting coil manufacturing apparatus 10C, the compressive force applied to the winding portion 30 increases due to the winding tension applied to the insulating wire 32, so that the excess amount of resin applied to the superconducting tape wire 1 can be further reduced. In addition, when manufacturing a racetrack-shaped superconducting coil, an increase in the amount of resin between turns in the racetrack-shaped straight portion can be more reliably prevented.

  That is, if the superconducting coil manufacturing apparatus 10C further includes the supply device 11 that supplies the insulating wire 32 to the superconducting coil manufacturing apparatus 10A, the effect of preventing an increase in the amount of resin between turns in the racetrack-shaped straight portion and The effect of reducing the manufacturing cost of the superconducting coil can be realized at a higher level than the superconducting coil manufacturing apparatus 10A.

  Further, if the superconducting coil manufacturing apparatus 10C further includes the supply device 11 for supplying the insulating wire 32 to the superconducting coil manufacturing apparatus 10B, the effect of preventing an increase in the amount of resin between turns in the racetrack-shaped straight portion and The effect of reducing the manufacturing cost of the superconducting coil can be realized at a higher level than the superconducting coil manufacturing apparatus 10B.

  Note that the superconducting coil manufacturing apparatus 10C described above has been described by taking the case where there are two supply apparatuses 11 shown in FIG. 8 as an example, but the supply apparatus 11 is not limited to two, and there are three or more. Also good.

  Moreover, although the above-mentioned description is an example which manufactures a superconducting coil by co-winding the superconducting tape wire 1 and the insulated wire 32 using the superconducting coil manufacturing apparatus 10C, it is insulated directly around the superconducting tape wire 1. If a wire covered with a material is used, a coil similar to the superconducting coil manufactured when the superconducting tape wire 1 and the insulating wire 32 are wound together can be manufactured using the superconducting coil manufacturing apparatuses 10A and 10B. .

  As a method of coating the superconducting tape wire 1, for example, a method of applying or bonding polyvinyl formal or polyvinyl butyral, or a non-adhesive film made of an insulating material such as polyester, polyurethane, polyamide, polyamideimide, polyimide, or the like is provided. There is a method of winding while wrapping (so-called wrapping method).

[Fourth Embodiment]
9 and 10 are explanatory views for explaining a method of manufacturing a superconducting coil according to the fourth embodiment of the present invention. More specifically, FIG. 9 is a partially enlarged view of the winding device 14, and FIG. 10 is a side sectional view of the winding device 14.

  The method for manufacturing a superconducting coil according to the present embodiment is a method for manufacturing a superconducting coil using a superconducting coil manufacturing apparatus according to an embodiment of the present invention, such as a superconducting coil manufacturing apparatus 10A, for example. In the superconducting coil manufacturing method according to the present invention, the superconducting tape wire 1 and the superconducting tape wire 1 are disposed at the winding end of the superconducting tape wire 1 on the outer periphery of the winding portion 30 formed by winding the superconducting tape wire 1 around the outer periphery of the winding frame 16. Further includes a step of winding another dummy wire 33 to wind the winding portion 30. The dummy wire 33 is removed in a coil forming step performed after winding the superconducting tape wire 1.

  Here, reference numeral 34 denotes a joint portion between the superconducting tape wire 1 and the dummy wire 33, and the superconducting tape wire 1 and the dummy wire 33 are joined together by a brazing material such as solder. As the dummy wire 33 used for winding the winding portion 30, for example, a metal wire material such as copper, stainless steel, and aluminum is suitable.

  Thus, according to the manufacturing method of the superconducting coil according to the present embodiment, the method further includes the step of winding the dummy wire 33 different from the superconducting tape wire 1 and tightening the winding portion 30. The portion 30 is tightened by the dummy wire 33, and the compressive force acting on the winding portion 30 can be further increased.

  That is, according to the method for manufacturing a superconducting coil according to the present embodiment, the amount of resin applied to the superconducting tape wire 1 can be further reduced as compared with a method in which the winding portion 30 is not tightened. Further, it is possible to prevent an increase in the resin amount between turns in the straight portion of the racetrack-shaped superconducting coil.

  In addition, according to the method for manufacturing a superconducting coil according to the present embodiment, as a result that the excess amount of the resin applied to the superconducting tape wire 1 is more reliably extruded as compared with the method in which the winding portion 30 is not tightened, Since the space factor of the winding portion 30 is improved, the design magnetic field can be obtained with less superconducting tape wire 1. Therefore, according to the manufacturing method of the superconducting coil according to the present embodiment, the cost for manufacturing the superconducting coil can be further reduced as compared with the method of not winding the winding portion 30.

  As described above, according to the superconducting coil manufacturing apparatus 10A to 10C, the superconducting coil manufacturing method performed using the superconducting coil manufacturing apparatuses 10A to 10C, and the superconducting coil manufactured using the manufacturing method, Even if the vertical position of the outer peripheral surface of the winding part 30 is moved by rotating the winding frame 16 supported and fixed to the center around the point O, the presser roller 21 is interlocked by the slide guide 22. Since it slides, the superconducting tape wire 1 can be continuously wound without stopping the rotation.

  That is, even when a superconducting coil having a complicated shape is manufactured, the step of continuously extruding the resin while the winding base 17 is rotated can be performed. As a result, the continuous superconducting tape wire 1 can be wound. Therefore, an increase in the number of manufacturing steps can be suppressed, and a lower price superconducting coil can be manufactured.

  Moreover, according to the superconducting coil manufacturing apparatus 10A to 10C, the superconducting coil manufacturing method performed using the superconducting coil manufacturing apparatuses 10A to 10C, and the superconducting coil manufactured using the manufacturing method, the superconducting coil wire 1 is coated. As a result, the excess amount of the resin can be firmly pushed out by the presser roller 21, so that an increase in the excess amount of the resin between the turns can be suppressed, the space factor of the winding portion 30 can be improved, and the design field can be reduced. Since it can be obtained with the tape wire 1, a lower-cost superconducting coil can be manufactured.

  In addition, although several embodiment was described in this specification, these embodiment is shown as an example and this invention is not limited to the said embodiment as it is. That is, in the implementation stage, it is possible to implement in various forms other than the above-described embodiments, and various omissions, additions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Superconducting tape wire (thin film superconducting wire), 2 ... Tape substrate, 3 ... Intermediate layer, 4 ... Superconducting layer, 5 ... Stabilizing layer, 6 ... Orientation layer, 7 ... Protective layer, 10A, 10B, 10C ... Superconducting coil Manufacturing apparatus, 11 ... Feeding device, 12 ... Tension device, 13 ... Impregnation tank, 14 ... Winding device, 16 ... Winding frame, 16a ... Flange (of reel 16), 17 ... Winding table, 20 ... Rotating machine, DESCRIPTION OF SYMBOLS 21 ... Presser roller, 21a ... Shaft part (of presser roller 21), 22 ... Slide guide, 22a ... Guide part, 25 ... Weight, 26 ... Base, 27 ... Fixing tool (screw), 28 ... Pulley, 29 ... Reel , 29a ... flange (of the winding frame 29), 30 ... winding part, 32 ... insulating wire, 33 ... dummy wire, 34 ... joint (solder), O ... center point of rotation.

Claims (14)

A non-circular superconducting coil manufacturing apparatus formed by winding a superconducting wire around a winding frame,
Supply means for supplying the superconducting wire;
Rotating means for rotating a winding base that supports and fixes the winding frame;
A pressing roller that presses the outer peripheral surface of the winding portion wound around the winding frame at a position where the superconducting wire supplied from the supply means and the winding portion are in contact with each other, and applies a constant load to the winding portion; ,
Anda slide guide for sliding movement in the direction opposite to the load direction and the load direction for loading a predetermined load to the winding portion of the pressing roller receives a force from the winding unit,
The direction in which the slide guide slides the presser roller is a first direction inclined with respect to the vertical direction . The superconducting coil manufacturing apparatus according to claim 1, wherein a load direction in which the presser roller applies a constant load to the winding portion is a vertical direction. The superconducting coil manufacturing apparatus according to claim 1, wherein a load direction in which the pressing roller applies a constant load to the winding portion is the first direction . The constant load applied by the presser roller to the winding portion includes the component force in the first direction obtained by disassembling the load applied to the presser roller in a plurality of directions including the first direction. The superconducting coil manufacturing apparatus according to claim 2 or 3 . Wherein the constant load pressure roller is loaded in the winding unit, according to any one of claims 1 4, characterized in that it includes a load due to gravity acting on the weight attached to the pressing roller Equipment for superconducting coils. The superconducting coil manufacturing apparatus according to any one of claims 1 to 5, wherein a radius of the pressing roller is equal to or larger than an allowable bending radius of the superconducting wire. The constant load applied to the winding portion by the presser roller includes a load generated by at least one mechanism selected from a spring mechanism, a piston mechanism, and a drive mechanism in which the spring mechanism and the piston mechanism are combined with an electric motor. The superconducting coil manufacturing apparatus according to claim 1, wherein the superconducting coil manufacturing apparatus is included. The superconducting coil manufacturing apparatus according to any one of claims 1 to 7, wherein a material of the presser roller is metal. The superconducting coil manufacturing apparatus according to claim 1, wherein the winding frame has a non-circular shape in which a plurality of arc portions and a plurality of straight portions are connected. A method of manufacturing a superconducting coil by winding the superconducting wire around the winding frame using the superconducting coil manufacturing apparatus according to any one of claims 1 to 9.
A method of manufacturing a superconducting coil, comprising: extruding an extra resin out of a resin applied to the superconducting wire without temporarily stopping the rotation of the winding base during winding of the superconducting wire. The winding of the superconducting wire further comprises a step of winding a dummy wire around the outer periphery of the winding portion a plurality of times, and the dummy wire is removed in a coil forming step performed after winding of the superconducting wire. The method of manufacturing a superconducting coil according to claim 10. The method of manufacturing a superconducting coil according to claim 10 or 11, wherein the dummy wire is a metal wire. The method of manufacturing a superconducting coil according to any one of claims 10 to 12, wherein the superconducting wire is wound together with the insulating wire. The method for manufacturing a superconducting coil according to claim 13, wherein the insulating wire is at least one material selected from polyimide, polyester, polyurethane, polyamide, polyamideimide, polyvinyl formal, and polyvinyl butyral.

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