JP2001006922A - Manufacture of superconducting coil and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fill a superconducting wire with a fixing material whose percentage of thermal contraction is close to that of the superconducting wire without making a gap and without lowering the filling factor of the superconducting wire, by winding the superconducting wire around a coil winding portion while applying the fixing material thereto by means of a coating means, and thereafter curing the fixing material. SOLUTION: When winding a superconducting wire 1 around a winding frame 2 of a superconducting coil, a given number of winding is imparted while applying a fixing material consisting of an epoxy resin or the like to a coil winding portion 4 by means of a brush 5 as a coating means. Thereafter, the superconducting coil is produced by conducting room temperature curing or heat curing depending on the quality of the material of the resin. A filling material is mixed into the fixing material to bring coefficient of the thermal contraction of the fixing material close to that of the superconducting wire 1. This filling material has a shape of globe, or substantially a globular shape having roundness resulting from the melting of acute angle portions after heat treatment of a crushed object. Viscosity of the fixing material is controlled to around 1-100 Pa.S at 20 deg.C. The application rate of the fixing material is also controlled to fill the fixing material in the superconducting wire 1 in proper quantity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a superconducting coil in which a superconducting wire is solidified with a fixing material such as a resin to improve heat transfer characteristics and superconducting stability.

[0002]

2. Description of the Related Art Generally, a superconducting coil is often manufactured by fixing a superconducting wire with a fixing material in order to enhance superconducting stability. A resin such as an epoxy resin is often used as the fixing material.

As described above, a method of manufacturing a superconducting coil by fixing a superconducting wire with a fixing material such as a resin is to wind a superconducting wire a predetermined number of turns into a predetermined shape and then fix the superconducting wire to the fixing material. And a method of applying a fixing material to the coil when winding the superconducting wire. Here, since the superconducting wire and the fixing material have different heat shrinkage rates, the heat shrinkage of the fixing material is reduced by the heat shrinkage of the superconducting wire so that no internal stress occurs in the fixing material due to the difference in the heat shrinkage at low temperatures. In order to approach the rate, a particulate or fibrous section is mixed (composite) in the fixing material.

[0004] However, since the fixing material mixed with particles and the like has high viscosity, when the coil is thick and large, the method using vacuum impregnation impregnates the inside of the coil away from the coil surface. The fixing material may not penetrate sufficiently. When the superconducting wire is solidified by the fixing material into which the particles and the like are mixed as described above, a method of winding while applying the fixing material is suitable.

[0005] As a method of winding while applying the fixing material, as described in JP-A-49-107493, the winding portion is immersed in the fixing material and wound. Method while flowing a fixing material into
As disclosed in Japanese Patent No. 661902, there is a method of winding a superconducting wire while applying a fixing material to the superconducting wire.

[0006]

By the way, the viscosity of the fixing material in which particles are mixed to reduce the difference in heat shrinkage from the superconducting wire is high. For this reason, as disclosed in Japanese Patent Application Laid-Open No. 49-107493, when the winding part is immersed in the fixing material to rotate the winding part, the winding part is rotated due to the viscosity of the fixing material. However, even if the winding part can be rotated, there is a problem that a gap is formed in the fixing material due to high viscosity or the fixing material cannot be impregnated.

[0007] Further, even in the method disclosed in Japanese Patent Application Laid-Open No. 49-107493, the fixing material cannot be uniformly impregnated into the winding portion or the fixing material cannot be impregnated. There is a problem that the flowing speed is slow and not practical.

Furthermore, the method disclosed in Japanese Patent No. 2661902, in which the superconducting wire is wound while applying a fixing material, has a problem that only a fixed amount of the fixing material can be applied to the superconducting wire.

By the way, in the winding of the superconducting wire, FIG.
As shown in FIGS. 6A and 6B, in a winding in which superconducting wires 1 having a round cross section are stacked in a bale, in FIG. 6A, a bobbin side surface gap 3a formed on the side surface of the bobbin 2, FIG. In B), a gap 3b at the rising portion to the next layer and a gap 3c at the transition to the next turn always exist, and when a superconducting wire having a rectangular cross section is used as shown in FIG. In the next layer, there is a rising portion gap 3b and the like. Such a reel side surface gap 3a, a rising portion gap 3b, and a transition portion gap 3
When c exists, the space factor of the superconducting wire 1 in the space is locally changed.

For this reason, since the amount of the fixing material that must be filled between the wound superconducting wires 1 also changes, when a fixed amount of the fixing material is supplied, a portion where the fixing material is not filled occurs, There is excess fixing material.

The positions where these voids are formed are as follows:
It is difficult to predict, and it is extremely difficult to change the amount of the fixing material applied to the superconducting wire 1 to avoid the excess of the fixing material and insufficient filling. Then, when a void is formed in the fixing material, problems such as deterioration of heat transfer characteristics at that portion, cracks due to stress concentration, and the like tend to occur,
Conversely, if the amount of fixing material is excessive, the superconducting wire 1
Or it becomes difficult to wind.

Therefore, the present invention has been made in view of the above-mentioned circumstances, and is wound while applying an appropriate amount of a highly viscous fixing material mixed with particles or the like and having a heat shrinkage ratio close to that of the superconducting wire to the superconducting wire. It is an object of the present invention to provide a method for manufacturing a superconducting coil for producing a superconducting coil.

[0013]

According to a first aspect of the present invention, there is provided a method for manufacturing a superconducting coil, wherein a superconducting winding is fixed to a coil winding portion with a fixing material. After winding the superconducting wire while applying the fixing material to the coil winding portion by applying means, the fixing material is cured.

According to the manufacturing method of the first aspect, the superconducting wire is wound while the fixing material is applied to the coil winding portion by applying the fixing material, and then the fixing material is cured so that the heat shrinkage rate of the superconducting wire is reduced. The fixed material approached can be filled without gaps and without lowering the filling rate of the superconducting wire.

According to a second aspect of the present invention, in the method for manufacturing a superconducting coil according to the first aspect, the applying means is any of a brush and a spatula.

According to the manufacturing method of the second aspect, by applying a brush or a spatula to a place where the superconducting wire is wound around the superconducting coil, it is possible to cope with the shape of the winding portion regardless of the viscosity of the fixing material. An appropriate amount of the fixing material can be applied.

According to a third aspect of the present invention, in the method for manufacturing a superconducting coil according to the first aspect, the fixing material has a viscosity of 20%.
It is 1 to 100 Pa · S at ° C.

According to the manufacturing method of the third aspect, by setting the viscosity of the fixing material at 20 ° C. at which winding is performed to 1 to 100 Pa · S, the fixing material is solidified and uniformly extended to the coil winding portion. A predetermined amount of the fixing material can be filled without preventing the fixing material from dropping after being applied to the coil winding portion.

The manufacturing method according to claim 4 is the method according to claim 1 or 3.
The method for manufacturing a superconducting coil described above is characterized in that the fixing material is compounded with any one of a spherical and a rounded filler.

According to the fourth aspect of the present invention, since the filler to be combined has a spherical shape or a rounded shape, the filler is caught in the gap between the superconducting wires and the fixing material is not filled. The fixing material can be applied without damaging the insulating coating of the superconducting wire at the sharp-angled portion of the filler material by the application work.

According to a fifth aspect of the present invention, there is provided a fixing device supplying device for supplying a fixing material to the coil winding portion, a coating and spreading device for coating and supplying the supplied fixing material to the coil winding portion,
Means for moving the fixing material supply device and the spreading device in the turn direction and the layer direction of the coil as the winding of the superconducting wire progresses, and applying the fixing material to the coil winding portion while applying the fixing material to the coil winding portion. Is wound.

According to the manufacturing apparatus of the fifth aspect, the fixing material having high viscosity can be reliably filled in the gap between the superconducting wires.

According to a sixth aspect of the present invention, in the superconducting coil manufacturing apparatus according to the fifth aspect, a winding end portion of the superconducting wire which is provided at a mounting portion of the fixing material spreading device and is wound around the coil winding portion. Control of the transition of the fixing material supply device and the fixing material spreading device to the next layer and the reversal of the turn direction at the winding end detected by the winding end detecting device. Is performed.

According to the manufacturing apparatus of the sixth aspect, the position of the fixing material supply device and the fixing material spreading device can be controlled by the winding end detecting means for detecting the coil winding end. Can be automated.

According to a seventh aspect of the present invention, in the superconducting coil manufacturing apparatus of the fifth aspect, a mechanism for pressing a superconducting wire to be wound against the coil winding portion is provided.

According to the manufacturing apparatus of the seventh aspect, by pressing the superconducting wire against the coil winding portion, the degree of adhesion between the wound superconducting wires is increased, and the space factor of the superconducting wire is set to a predetermined amount. In addition, unnecessary filling of the fixing material can be prevented.

According to an eighth aspect of the present invention, in the superconducting coil manufacturing apparatus according to the fifth aspect, the fixing material supply device includes a supply pipe and a fixing material rotatably disposed in the supply pipe, the coil material being attached to the coil winding portion. And a screw conveyor for supplying.

According to the manufacturing apparatus of the eighth aspect, the supply amount of the fixing material to be supplied to the coil winding portion by the screw conveyor and the supply pipe is made precise, so that the amount of the fixing material to be applied is insufficient or excessive. Can be avoided.

According to a ninth aspect of the present invention, there is provided the superconducting coil manufacturing apparatus according to the fifth aspect, further comprising a monitoring device for monitoring the protrusion of the fixing material at the end of the fixing material spreading device and the uncoated portion of the fixing material. The supply amount of the fixing material is adjusted based on the state of the material protruding and uncoated.

According to the manufacturing apparatus of the ninth aspect, by monitoring the spread state by the monitoring device, it is possible to adjust the excess and deficiency of the fixing material and to more surely fill the proper amount of the fixing material. can do.

According to a tenth aspect of the present invention, in the manufacturing apparatus for a superconducting coil according to the fifth or eighth aspect, the fixing material supply device includes a stirring means for stirring the fixing material, and the stirring fixed material is supplied to a supply pipe. It is characterized by sending.

According to the manufacturing apparatus of the tenth aspect, by sending the fixing material stirred by the stirring device to the supply pipe, the generation of bubbles and voids in the fixing material is prevented, and the coil winding is performed by the bubbles and voids in the fixing material. Insufficiency in the amount of the fixing material applied to the line portion can be avoided.

[0033] The manufacturing apparatus according to claim 11 is the manufacturing apparatus for superconducting coil according to claim 5, wherein
It is a belt that moves endlessly.

According to the manufacturing apparatus of the eleventh aspect, by transporting the fixing material by the belt, the amount of the fixing material during the transportation is increased due to the adhesion to the supply pipe or the like during the conveyance of the fixing material or the separation of the adhered fixing material. The change can be avoided, and the amount of the fixing material applied to the coil winding portion can be made constant.

According to a twelfth aspect of the present invention, in the superconducting coil manufacturing apparatus of the eleventh aspect, there is provided a fixing material container in which a fixing material is accommodated and a part of a belt is immersed in the fixing material. The material container is provided with means for adjusting the amount of fixed material carried by the belt.

According to the manufacturing apparatus of the twelfth aspect, the amount of the fixing material conveyed by the belt is adjusted by the means for adjusting the amount of the fixing material provided in the fixing material container, so that the fixing material applied to the coil winding portion is stretched. The amount of material can be appropriately adjusted, and waste of the fixing material due to adjustment of the amount of fixing material can be prevented.

According to a thirteenth aspect of the present invention, in the superconducting coil manufacturing apparatus according to the eleventh or twelfth aspect, the belt has not only a fixing material supply function but also a fixing material spreading function.

According to the manufacturing apparatus of the thirteenth aspect, by supplying and spreading the fixing material by the belt, the apparatus can be simplified, and the failure of the apparatus can be reduced.

According to a fourteenth aspect of the present invention, in the superconducting coil manufacturing apparatus according to any one of the eleventh to thirteenth aspects, a fixing material excess from a necessary amount of the spreading material is fixed from the coil winding portion via a belt. It is characterized in that it is collected in a container.

According to the manufacturing apparatus of the fourteenth aspect, it is possible to appropriately adjust the amount of the fixing material to be spread in the spreading section, and to avoid the loss of the fixing material by collecting the fixing material in the fixing material container.

According to a fifteenth aspect of the present invention, in the superconducting coil manufacturing apparatus according to any one of the fifth to fourteenth aspects, the distance between the fixing material supply device and the fixing material spreading device and the coil winding portion is measured. Measuring means is provided.

According to a fifteenth aspect of the present invention, by measuring the distance between the fixing material supply device and the fixing material spreading device and the coil winding portion, the coil winding portion, the fixing material supply device and the fixing device are fixed. The position with the material spreading device can be maintained properly, preventing the superconducting coil from being damaged too close or the fixing material from being applied too far to the coil winding. can do.

[0043]

Embodiments of the present invention will be described below with reference to the drawings.

[One Embodiment of Manufacturing Method] FIG. 1 is a configuration diagram showing one embodiment of a method of manufacturing a superconducting coil according to the present invention. Note that the same or corresponding parts as those in FIG. 6 are described using the same reference numerals.

As shown in FIG. 1, in this embodiment, when the superconducting wire 1 is wound around the winding frame 2 of the superconducting coil, a resin such as an epoxy resin is After applying a predetermined number of turns while applying a fixing material made of, a superconducting coil is manufactured by hardening at room temperature or heat depending on the material of the resin.

A filler is mixed in the fixing material,
This filler is formed into a rounded shape by melting a sharp angle portion by heat treatment of a spherical or crushed product, and the viscosity of the fixing material is adjusted to 1 to 100 Pa · S at 20 ° C.

Therefore, by mixing the filler into the fixing material, the fixing material having a high viscosity, which has a heat shrinkage ratio of the fixing material close to that of the superconducting wire 1, can be surely obtained.
It can be applied to the whole.

Next, the operation of the present embodiment will be described.

The amount of the fixing material applied to the surface of the coil winding part 4 by the brush 5 is made slightly larger than the volume of the gap formed between the superconducting wires 1 after winding. Then, at this time, a little surplus fixing material is formed by the superconducting wire 1 being pressed against the coil winding portion 4 by the winding tension of the superconducting wire 1,
From the coil winding part 4 where the winding has been completed, the coil will protrude into the coil winding part 4 for performing the winding. In this case, if the amount of the fixing material to be brush-coated with the brush 5 is adjusted while observing the amount of the fixing material protruding from the portion where the winding is to be performed, the coil winding portion 4 from which the superconducting wire 1 is to be wound will be formed. An appropriate amount of fixing material can always be applied.

For this reason, as shown in FIGS. 6A to 6C, a winding frame inevitably generated between superconducting wires 1 larger than a normal winding portion and whose position cannot be predicted. Side gap 3
a, the superconducting wire 1 can be filled with a sufficient amount of the fixing material in the rising gap 3b and the transition gap 3c by adjusting the application amount of the fixing material.

At this time, the shape of the filler mixed into the fixing material is spherical or a crushed product is heat-treated, and the acute angle portion is melted to have a rounded shape. To prevent the insulating coating of the superconducting wire 1 from being damaged, the filler to be caught in the gap between the superconducting wires 1 and the filling of the fixing material to be insufficient, or the mixing ratio of the filler to be locally different. The fixing material can be reliably applied to the winding part 4.

Further, the viscosity of the fixing material is set to 1 to 10 at 20 ° C.
By adjusting the viscosity to 0 Pa · S, the viscosity is too high to cause coating unevenness of the fixing material, and conversely, the viscosity is too low to cause the fixing material to drip after being applied to the coil winding portion 4 or to move unnecessarily. It can be prevented beforehand.

As described above, according to the present embodiment, by applying the fixing material to the place where the superconducting wire 1 is wound around the coil winding portion 4, the fixing material having a heat shrinkage rate close to that of the superconducting wire 1 can be completely removed. In addition, the superconducting wire 1 can be filled without lowering the filling rate. Thereby, the size of the superconducting coil can be manufactured as designed, and the generation of cracks or voids in the fixing material due to the difference in the heat shrinkage between the superconducting wire 1 and the fixing material can be reduced. Quenching due to generation of cracks as starting points can be avoided. As a result, a superconducting coil having high superconducting stability can be obtained.

Further, according to the present embodiment, by applying the brush 5 to the place where the superconducting wire 1 is wound around the coil winding portion 4, regardless of the viscosity of the fixing material,
An appropriate amount corresponding to the shape of the coil winding part 4 can be applied.

Further, the viscosity of the fixing material is set to 1 to 10 at 20 ° C.
By setting the pressure to 0 Pa · S, the fixing material is hardened and cannot be uniformly spread on the coil winding portion 4, and the fixing material does not drop down after being applied to the coil winding portion 4. A predetermined amount can be filled.

By making the shape of the filler mixed into the fixing material spherical or round, the filling material is caught in the gap between the superconducting wires 1 and the fixing material is not filled, or The fixing material can be applied by the work without damaging the insulating coating of the superconducting wire 1 at the acute angle portion of the filler.

In this embodiment, the brush 5 is used as a coating means. However, the present invention is not limited to this, and a spatula may be used.

[First Embodiment of Manufacturing Apparatus] FIG. 2 is a configuration diagram showing a first embodiment of a superconducting coil manufacturing apparatus according to the present invention, and FIG. 3 is a side view of FIG. The same parts as those in FIG. 1 will be described with the same reference numerals. The same applies to the following embodiments. Also, in FIG. 2, the coil turn direction moving device and the layer direction moving device shown in FIG. 3 are omitted because the drawing becomes complicated.

As shown in FIGS. 2 and 3, in the manufacturing apparatus of the present embodiment, a fixing material supply device 10 for supplying the fixing material 6 to the coil winding portion 4, and the fixing material supply device 10 supplies the fixing material 6. A spreading device 20 for spreading and fixing the fixing material 6 to the coil winding portion 4, and a turning direction movement for moving the fixing material supply device 10 and the spreading device 20 in the coil turning direction as the winding of the superconducting wire 1 progresses. The apparatus includes a device 21 and a layer direction moving device 22 for moving in the layer direction, and winds the superconducting wire 1 while applying the fixing material 6 to the coil winding portion 4. Here, the same fixing member 6 as that of the embodiment shown in FIG. 1 is used.

The fixing material supply device 10 includes a fixing material container 11 for accommodating the fixing material 6, a propeller-like stirrer 12 as stirring means installed in the fixing material container 11 and stirring the fixing material 6. Stirring drive 1 for driving stirrer 12
3, a fixing material supply pipe 14 connected to the lower part of the fixing material container 11, and a screw conveyor (spiral extrusion) rotatably arranged on the fixing material supply pipe 14 and supplying the fixing material 6 to the coil winding portion 4. ) 15 and a supply driving device 16 disposed at one end of the fixing material supply pipe 14 to drive the screw conveyor 15. By driving the screw conveyor 15, the coil winding is performed from the other end of the fixing material supply pipe 14. Part 4
Is supplied with the fixing material 6.

In the vicinity of the other end of the fixing material supply pipe 14,
A spreading device 20 is installed, and the spreading device 2
With 0, the fixing material 6 applied to the coil winding portion 4 is spread. At the base of the spreading device 20, an angle detector 23 as a measuring means is attached.
The distance between the fixing material supply pipe 14 and the coil winding section 4 is measured by measuring the change in the angle of the spreading device 20 with the angle detector 23.

Further, in the vicinity of the coating and spreading device 20 of the fixing material supply pipe 14, a coating and spreading monitoring device 24 is arranged, and the coating and spreading monitoring device 24 is provided with the coating and spreading device 20.
The protrusion of the fixing material 6 at the end of and the unpainted portion are monitored.

The fixing material supplying device 10 and the spreading device 20 are moved to appropriate positions by the turn direction moving device 21 and the layer direction moving device 22 as described above, and the weight balance is adjusted by the balance weight 25. Has been maintained.

On the other hand, as shown in FIG. 2, a superconducting wire pressing device 26 for pressing the superconducting wire 1 to be wound on the coil winding portion 4 is disposed near the coil winding portion 4. The superconducting wire 1 wound on the fixing material 6 spread by the container 26 is pressed against the coil winding portion 4.

Further, a winding end of the superconducting wire 1 wound around the coil winding portion 4 is a mounting portion of the spreading device 20 and is located on the rotation upstream side of the coil winding portion 4 of the spreading device 20. Winding end detector 27 as winding end detecting means for detecting a portion
Are provided, and the turn direction moving device 21 and the layer direction moving device 22
Material supply device 10 and spreader 2
The transition of 0 to the next layer and the reversal of the turn direction are controlled.

Next, the operation of the present embodiment will be described.

The fixing material 6 accommodated in the fixing material container 11 is
Stirrer 12 that rotates by driving stirring drive device 13
The mixture is homogeneously composited with the filler by being stirred. At this time, the stirrer 12 is rotating so as to send the fixing material 6 toward the screw conveyor 15 in the fixing material supply pipe 14.

That is, the fixing material 6 is uniformly stirred by the stirrer 12 and sent to the screw conveyor 15. At this time, the feeding amount of the fixing material 6 is more than necessary and pressure is applied inside the fixing material 6, so that the stirrer 1
The bubbles and voids in the fixing member 6 are removed by the movement of the fixing member 6 by the extension of the fixing member 6 and the pressure in the fixing member 6. The extra fixing material 6 is lifted up on the side of the fixing material container 11 and sent back.

The sent fixing material 6 is supplied to the coil winding portion 4 from the other end of the fixing material supply pipe 14 by the rotation of the screw conveyor 15 whose rotation speed has been adjusted. 4 is painted with the required amount.

The fixing material 6 applied to the coil winding part 4 is spread evenly on the coil winding part 4 by the spreading device 20. Here, the spreading monitor 24
By monitoring and adjusting the state, the fixing material 6 is sufficiently filled also in the gap generated in the coil winding portion 4 and the fixing material 6 is unnecessarily applied to the coil winding portion 4. Can also be prevented.

The superconducting wire 1 wound on the spread fixing material 6 is pressed against the coil winding portion 4 by a superconducting wire pressing device 26. Thus, the applied fixing material 6
Thereby, superconducting wire 1 is lifted, and it is possible to prevent superconducting wire 1 from being wound to a diameter larger than a predetermined position.

Further, at the coil winding end, a winding end detector 2
Detecting that the coil 7 has reached the end of the winding, it controls the transition to the next layer and the reversal of the turning direction and the moving direction.

Therefore, in the present embodiment, the movement and position control of the fixing material supply device 10 and the spreading device 20 are performed by the turn direction moving device 21, the layer direction moving device 22, the angle detector 23 and the winding end sensor 27. Can be performed automatically, so that the superconducting coil can be manufactured automatically.

As described above, according to the present embodiment, the fixing material supply device 10 that supplies the fixing material 6 to the coil winding portion 4, and the spreader that applies the supplied fixing material 6 to the coil winding portion 4. A device 20 and a turn direction moving device 21 and a layer direction moving device 22 for moving the fixing material supply device 10 and the spreading device 20 in the coil turn direction and the layer direction as the winding of the superconducting wire 1 progresses. By winding the superconducting wire 1 while applying the fixing material 6 to the coil winding portion 4, it is possible to reliably fill the gap between the superconducting wires 1 with the highly viscous fixing material 6.

Then, the fixing material supply device 10
Is provided with a stirrer 12 that stirs, and the fixing material 6 stirred by the stirrer 12 is sent to a fixing material supply pipe 14,
Prevents bubbles and voids from being generated in the fixing material 6.
Insufficiency in the amount of the fixing material applied to the coil winding part 4 due to bubbles or voids in the inside can be avoided beforehand.

Further, at the winding end detected by the winding end detector 27, the transition of the fixing material supply device 10 and the spreading device 20 to the next layer and the control of the reversal of the turn direction are performed, thereby fixing the fixing material. Material supply device 10 and spreader 2
It is possible to control the position of 0, and the manufacturing apparatus can be automated.

Further, the superconducting wire pressing device 26 presses the superconducting wire 1 to be wound on the coil winding portion 4 to increase the adhesion between the wound superconducting wires 1 and reduce the space factor of the superconducting wire 1. With the predetermined amount, the fixing material 6 can be prevented from being unnecessarily filled.

The fixing material supply device 10 includes a fixing material supply pipe 14 and a screw conveyor 15 rotatably arranged in the fixing material supply pipe 14 and supplying the fixing material 6 to the coil winding section 4. As a result, the amount of the fixing material 6 supplied to the coil winding portion 4 and spread is made accurate,
Insufficiency or excess of the fixing material 6 to be spread can be avoided.

According to this embodiment, the spreading device 20
Is provided with a spreading monitor 24 for monitoring the protrusion and unpainted portion of the fixing material 6 at the end of the fixing member 6, and by adjusting the supply amount of the fixing material 6 based on the condition of the protrusion of the fixing material 6 and the unpainted portion, It is possible to further ensure that an appropriate amount of the fixing material 6 is filled.

The angle detector 23 measures the change in the angle of the coating and spreading device 20 so that the fixing material feeding device 1 can be used.
By measuring the distance between 0 and the spreading device 20 and the coil winding portion 4, the positions of the coil winding portion 4, the fixing material supply device 10 and the spreading device 20 can be properly maintained, It is possible to avoid that the superconducting coil is damaged because the distance is too short, and that the fixing material 6 cannot be applied to the coil winding part 4 because the distance is too long.

FIG. 4 is a block diagram showing a modification of the first embodiment of the apparatus for manufacturing a superconducting coil according to the present invention. In this modification, instead of the angle detector 23 of the first embodiment, a distance measuring device 28 as a measuring means is attached below the fixing material supply pipe 14. This distance measuring device 28
Measures the distance between the fixing material supply device 10 and the spreading device 20 and the portion of the coil winding portion 4 where the fixing material 6 is not applied.

Therefore, by measuring the positions of the fixing material supply device 10 and the spreading device 20 and the portion of the coil winding portion 4 where the fixing material 6 is not painted by the distance measuring device 28, the measurement by the fixing material 6 is performed. Errors can be avoided, and the fixing material supply device 10 and the spreader 20
And the position control of the coil winding unit 4 can be reliably performed.

[Second Embodiment of Manufacturing Apparatus] FIG. 5 is a configuration diagram showing a second embodiment of a manufacturing apparatus for a superconducting coil according to the present invention.

As shown in FIG. 5, the fixing material container 30 accommodates the fixing material 6 and moves the endlessly moving timing belt 31.
The timing belt 31 includes a belt driving device 32, a driving wheel 33 a driven to rotate by the belt driving device 32, a driven wheel 33 b disposed in the fixing material container 30, and a coil. And a driven wheel 33 c disposed near the winding part 4. The timing belt 31 is connected to the belt tension machine 3.
4, a predetermined tension is applied to prevent loosening. An application amount adjuster 35 is provided in the fixing material container 30, and the application amount adjuster 35 adjusts the amount of the fixing material 6 carried by the timing belt 31.

Further, between the timing belt 31 and the coil winding part 4, a fixing material applicator 36 for applying the fixing material 6 carried by the timing belt 31 to the coil winding part 4, A spreading adjustment device 37 for spreading the fixing material 6 applied to the coating material 4 is provided.

Next, the operation of the present embodiment will be described.

When the belt driving device 32 is driven to rotate the drive wheel 33 a, the amount of the fixing material 6 in the fixing material container 30 is adjusted by the coating amount adjuster 35 by rotating the timing belt 31. While being carried to the coil winding section 4. In the coil winding portion 4, all the fixing materials 6 carried by the timing belt 31 by the fixing material applicator 36 are applied to the coil winding portion 4. The fixing material 6 applied to the coil winding portion 4 is spread and spread by the spreader 37, and the excess fixing material 6 is returned to the timing belt 31 and returned to the fixing material container 30.

Here, the fixing material 6 is given to the timing belt 31 by the application amount adjuster 35, slightly more than the required amount. The fixing material 6 is carried by the timing belt 31 to the coil winding part 4 in a non-contact manner with the parts other than the timing belt 31, and the fixing material 6 is adjusted to a viscosity that does not cause sagging in the coil winding part 4, so that the timing There is no dripping from the belt 31. Therefore, since the entire amount of the fixing material 6 transported by the fixing material applicator 36 is applied to the coil winding portion 4, a fixed amount of the fixing material 6 can always be applied to the coil winding portion 4. .

The applied fixing material 6 is applied to the coil winding section 4 by adjusting the thickness thereof to a predetermined thickness by a coating / expansion adjuster 37.
Returned to 1. For this reason, superconducting wire 1 is wound on fixing material 6 having a constant thickness regardless of the gap of coil winding portion 4.

Although the remaining fixing material 6 due to this winding will protrude in the next turn, this portion includes the amount of the remaining fixing material 6 immediately before the winding, including the amount of the remaining fixing material 6.
Is adjusted to a constant thickness. Thereby, the necessary fixing material 6 can always be spread on the coil winding portion 4 without adjusting the amount of application of the complicated fixing material 6.

As described above, according to the present embodiment, the high-viscosity fixing material 6 which has been adjusted to the required amount and the heat shrinkage is brought close to the superconducting wire 1 is applied to the coil winding portion 4 by a relatively simple mechanism. It can be stretched to produce a superconducting coil.

Further, by transporting the fixing material 6 by the timing belt 31, it is possible to prevent the amount of the fixing material from changing during the conveyance due to the adhesion to the supply pipe or the like during the conveyance of the fixing material 6 or the separation of the adhered fixing material. This can be avoided, and the amount of the fixing material applied to the coil winding portion 4 can be made constant.

Further, by adjusting the amount of the fixing material conveyed to the fixing material container 30 by the timing belt 31 by the coating amount adjuster 35, the amount of the fixing material applied to the coil winding portion 4 can be appropriately adjusted. There is no waste of the fixing material caused by adjusting the amount of the fixing material.

[0094] Since the fixing material 6 which is excessive than the necessary amount of the spreading material is collected in the fixing material container 30, the amount of the fixing material to be spread and spread in the spreading portion can be appropriately adjusted, and the fixing material 6 has no waste. It does not occur.

In the present embodiment, if the timing belt 31 is configured to have a fixing material spreading function in addition to the fixing material supply function, the apparatus can be further simplified, and the failure of the apparatus can be improved. Can be reduced.

[0096]

As described above, according to the method of manufacturing a superconducting coil according to the present invention, after the superconducting wire is wound while the fixing material is applied to the coil winding portion by applying means,
By curing the fixing material, it is possible to fill the superconducting coil with a high-viscosity fixing material with a heat shrinkage ratio close to that of the superconducting wire, and the fixing material due to the difference in heat shrinkage and voids in the fixing material Does not cause quench.

Further, since the size of the superconducting coil is not increased by excessively filling the fixing material, a superconducting coil having a predetermined shape and high stability can be obtained.

According to the superconducting coil manufacturing apparatus according to the present invention, the superconducting wire is wound while the fixing material is applied to the coil winding portion, so that the highly viscous fixing material is securely inserted into the gap between the superconducting wires. Can be filled.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of a method for manufacturing a superconducting coil according to the present invention.

FIG. 2 is a configuration diagram showing a first embodiment of a superconducting coil manufacturing apparatus according to the present invention.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a configuration diagram showing a modification of the first embodiment of the superconducting coil manufacturing apparatus.

FIG. 5 is a configuration diagram showing a second embodiment of a superconducting coil manufacturing apparatus according to the present invention.

FIGS. 6A, 6B, and 6C are diagrams for explaining a problem caused by a conventional method.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 superconducting wire 2 winding frame 4 coil winding part 5 brush (coating means) 6 fixing material 10 fixing material supply device 11 fixing material container 12 stirrer 13 stirring driving device 14 fixing material supply pipe 15 screw conveyor 16 supply driving device 20 coating Stretching device 21 Turn direction moving device 22 Layer direction moving device 23 Angle detector (measuring means) 24 Spreading monitoring device 25 Balance weight 26 Superconducting wire pressing device 27 Winding end detector 28 Distance measuring device (measuring device) 30 Fixing material Container 31 Timing belt 32 Belt driving device 33a Drive wheel 34 Belt tension machine 35 Coating amount adjuster 36 Fixing material applicator 37 Coat spreader

Claims (15)

[Claims] 1. A method of manufacturing a superconducting coil in which a superconducting winding is fixed to a coil winding portion with a fixing material, wherein the superconducting wire is wound while applying the fixing material to the coil winding portion by applying means. And then curing the fixing material. 2. The method for manufacturing a superconducting coil according to claim 1, wherein the applying means is one of a brush and a spatula. 3. The method for manufacturing a superconducting coil according to claim 1, wherein the viscosity of the fixing material is 1 to 100 Pa ·
S. A method for manufacturing a superconducting coil, the method comprising: 4. The method of manufacturing a superconducting coil according to claim 1, wherein the fixing material is a composite of one of a spherical shape and a rounded shape. Method. 5. A fixing material supply device for supplying a fixing material to a coil winding portion, a spreading device for spreading the supplied fixing material on the coil winding portion, and a fixing material supply device and a spreading device. Means for moving the superconducting wire in the turn direction and the layer direction as the winding of the superconducting wire progresses, and winding the superconducting wire while applying the fixing material to the coil winding portion. Superconducting coil manufacturing equipment. 6. A winding end of a superconducting coil according to claim 5, wherein said winding end is provided at a mounting portion of said fixing material spreading device and detects a winding end of a superconducting wire wound around said coil winding portion. It is provided with a detecting means, and controls the transition to the next layer of the fixing material supply device and the fixing material spreading device and the reversal of the turn direction at the winding end detected by the winding end detecting means. Superconducting coil manufacturing equipment. 7. The superconducting coil manufacturing apparatus according to claim 5, further comprising a mechanism for pressing a superconducting wire to be wound against the coil winding portion. 8. The superconducting coil manufacturing apparatus according to claim 5, wherein the fixing material supply device includes a supply pipe and a screw conveyor rotatably disposed in the supply pipe and supplying the fixing material to the coil winding portion. An apparatus for manufacturing a superconducting coil, comprising: 9. A superconducting coil manufacturing apparatus according to claim 5, further comprising a monitoring device for monitoring the protrusion of the fixing material at the end portion of the fixing material spreading device and the unpainted portion of the fixing material. A superconducting coil manufacturing apparatus, wherein the supply amount of the fixing material is adjusted based on the situation described in (1). 10. The superconducting coil manufacturing apparatus according to claim 5, wherein the fixing material supply device includes a stirring means for stirring the fixing material, and sends the stirred fixing material to a supply pipe. Superconducting coil manufacturing equipment. 11. The superconducting coil manufacturing apparatus according to claim 5, wherein the fixing material supply device is an endlessly moving belt. 12. The superconducting coil manufacturing apparatus according to claim 11, further comprising a fixing material container in which a fixing material is accommodated and a part of a belt is immersed in the fixing material, wherein the fixing material container includes the belt. A means for adjusting the amount of fixing material carried by the superconducting coil. 13. The superconducting coil manufacturing apparatus according to claim 11, wherein the belt has not only a fixing material supply function but also a fixing material spreading function. 14. An apparatus for manufacturing a superconducting coil according to claim 11, wherein the fixing material container is provided with a fixing material container that is larger than a necessary amount of the spreading material from the coil winding portion via a belt. Characteristic superconducting coil manufacturing equipment. 15. The superconducting coil manufacturing apparatus according to claim 5, further comprising: a fixing material supply device, a fixing material spreading device, and a measuring means for measuring an interval between the coil winding portion. An apparatus for manufacturing a superconducting coil, comprising: