JP2001176722A - Winding method of heat-treated superconductor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding method of a superconductor which has been heat-treated, where bending strain is controlled without having to move a drum for conductor supply. SOLUTION: In this winding method of a superconductor which has been heat-treated, the superconductor is wound with a drum for conductor supply which can be rotated at a fixed position, led out from the drum while bending strain is restricted and disposed at a winding start position on a winding frame. As the winding work progresses, bending strain is estimated by analysis using a finite element method. On the basis of estimation, by rotating the drum at a constant position, the superconductor is wound while bending strain is adjusted, and a winding is formed. When bending strain is adjusted, the position of a conductor supplying port, the position of winding to the winding frame and a conductor length between the above positions are adjusted. The lee-out angle of the superconductor in the tangential line direction of the drum and an angle of the superconductor to a tangential line direction of the winding frame at the position of winding are adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for winding a heat-treated superconducting conductor by winding a heat-treated superconducting conductor to produce a winding, and more particularly to a method for controlling a superconducting wire while controlling the bending so as not to impair the superconducting performance. The present invention relates to a method for winding a heat-treated superconducting conductor.

[0002]

2. Description of the Related Art FIG. 3 shows, for example, FUSION TECHNOLOGY 19
96, DEVELOPMENT OF Nb3AL COIL FORITER TF MAGNET,
FIG. 2 is a diagram schematically illustrating the coil winding machine shown in T. Ando, N. Koizumi et al. In the drawing, reference numeral 1 denotes a conductor supply drum, 2 denotes a heat-treated superconducting conductor wound around the conductor supply drum 1, 3 denotes a conductor bending machine, 4 denotes a groove into which the heat-treated superconducting conductor 2 is fitted, and 5 denotes a groove. Grooved plate, 6
Is a track for moving the conductor supply drum 1, and 7 is a conductor supply port.

[0003] A heat-treated superconducting conductor 2 wound around a conductor supply drum 1 having the same diameter as the winding diameter at the time of heat treatment is applied to a conductor bending machine 3.
Then, it is bent into a shape that fits the groove 5 dug in the plate 4 corresponding to the winding frame, and fitted. At the time of fitting, the conductor supply drum 1 is rotated while moving along the conductor supply drum trajectory 6, and the conductor is supplied while appropriately adjusting the position of the conductor supply port 7, so that the conductor is allowed to be wound at the time of winding. Adjust so that the amount of distortion is not more than the value. This is because superconducting performance may be degraded when a conductor is subjected to a distortion exceeding an allowable value during winding.

[0004]

Since the conventional winding apparatus is constructed as described above, the conductor supply drum must be moved, and a mechanism for moving the conductor supply drum is required. In addition, in the method of winding a heat-treated superconducting conductor, it is difficult to control the strain because there is no clear guideline for the control, and the bending strain is measured at the time of winding with a strain gauge or the like, and the result is used as a basis. There is a problem that it is necessary to control the winding.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to eliminate the need for a mechanism for moving a conductor supply drum and to provide a distortion control method suitable for the apparatus. To provide. In particular, it shows a method of winding while controlling bending strain and a method of evaluating bending strain for winding.

[0006]

In order to solve the above-mentioned problems, a method of winding a heat-treated superconducting conductor according to the present invention is performed by heating a superconducting metal-compound or oxide superconductor. This is a method of winding a heat-treated superconducting conductor that is once wound around a conductor supply drum larger or smaller than the diameter at the time and then wound.

[0007] Further, a position separated from the conductor supply drum,
A method of winding a metal compound-based or oxide-based heat-treated superconducting conductor, characterized in that the conductor length between the position where the conductor is wound around the winding frame is kept constant.

[0008] This is a method for winding a heat-treated superconducting conductor in which a metal compound-based or oxide-based heat-treated superconducting conductor is adjusted from a position at which the superconducting conductor is separated from a conductor supply drum, a position at which it is wound around a bobbin, and a conductor length therebetween.

[0009] The winding of the heat-treated superconducting conductor for adjusting the angle with respect to the tangential direction of the drum that separates the metal compound or oxide-based heat-treated superconducting conductor from the conductor supply drum and the angle with respect to the tangential direction of the winding frame wound around the winding frame. It is a line method.

It is considered that a part of the winding shape of the metal compound or oxide conductor at the time of heat treatment was cut out, and the ends were made to coincide with the restraining conditions at the position where the end is separated from the conductor supply drum and the position where the end is wound around the winding frame. And a method for winding a heat-treated superconducting conductor for evaluating a bending strain during winding of the conductor.

In order to suppress the bending distortion of the metal compound or oxide heat-treated superconducting conductor after winding to a certain level or less, a part of the winding shape of the metal compound or oxide conductor during heat treatment is cut out. The bending distortion of the conductor is evaluated at the position where the end is separated from the conductor supply drum and the position where it is wound around the bobbin, and the radius of the conductor supply drum and the heat-treated superconductor are evaluated. This is a method for winding a heat-treated superconducting conductor in which a position, an angle, a position, an angle, and a length of the conductor between the conductor, which are separated from the conductor supply drum, and the winding frame are set.

Further, the method for winding a heat-treated superconducting conductor according to the present invention is characterized in that the heat-treated superconducting conductor has a diameter larger or smaller than the winding diameter of the superconducting conductor at the time of heat treatment, and is provided on a conductor supply drum which can rotate at a fixed position. The heat-treated superconducting conductor is pulled out from the drum for winding and supplying the conductor while limiting the bending distortion of the heat-treated superconducting conductor, and is arranged at a winding start position on a bobbin. The bending strain of the heat-treated superconductor is adjusted by adjusting the bending strain of the heat-treated superconductor by rotating the conductor supply drum at a fixed position in accordance with the evaluation of the bending strain. This is a method of winding a heat-treated superconducting conductor for forming a wire.

In adjusting the bending strain, the position of the conductor supply port for supplying the heat-treated superconducting conductor from the conductor supply drum, the winding position where the conductor is wound around the bobbin, and the conductor length between the conductor supply port and the winding position are adjusted. Winding method for heat-treated superconducting conductor.

In adjusting the bending distortion, the angle at which the heat-treated superconducting conductor is drawn out with respect to the tangential direction of the conductor supply drum at the conductor supply port, and the position of the heat-treated superconducting conductor with respect to the tangential direction of the bobbin at the winding position wound around the bobbin. This is a method of winding a heat-treated superconducting conductor for adjusting the angle.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 2, reference numeral 21 denotes a conductor supply drum, 22 denotes a heat-treated superconducting conductor, 23 denotes a conductor supply port, 24 denotes a conductor bending machine, and 25 denotes a plate with a conductor fitting groove corresponding to a winding frame.

Within the allowable range of the bending strain applied to the heat-treated electroconductive conductor (the conductor is once wound on a conductor-supplying drum different from the winding diameter at the time of the heat treatment, so that the conductor-supplying drum rotates and The position of the conductor supply port is adjusted, the conductor length from the conductor supply port to the conductor bending machine is appropriately adjusted, and winding is performed so that the bending strain applied to the conductor is equal to or less than an allowable value.

One embodiment of a method for reducing the bending strain applied to the conductor to an allowable value or less will be described with reference to FIG. 81 in the figure
Is the outline of the conductor supply drum, 32 is the outline of the winding at the time of heat treatment, 33 is the trajectory of the conductor after displacement determined analytically, 34 is a plate with a conductor fitting groove serving as a winding frame of the winding, Reference numeral 35 indicates a position of the conductor supply port, and reference numeral 36 indicates a position of the conductor bending machine. 31 and 32 are concentric circles.

At the time of winding, the position of the conductor supply port and the position of the conductor bending machine are defined as points on a line passing through the center of the concentric circle, and the conductor length between the two points is defined as the winding length during heat treatment. Assuming that the circumference is the same as that of the winding, one conductor is wound along the outer shape of the winding at the time of heat treatment, and the position of the conductor supply port and the winding start position on the bobbin, which is the position of the conductor bending machine, are determined. The conductor is cut at the intersection P of the wire and the outline of the winding at the time of heat treatment, and its ends are respectively positioned at the position of the conductor supply port and the winding start position on the bobbin which is the position of the conductor bending machine. The evaluation of the amount of bending strain of the conductor is possible by, for example, a computer analysis using the finite element method, assuming that the angle is adjusted in accordance with the condition for fixing.

This evaluation is performed for one round of the winding, the radius of the conductor supply drum is set to minimize the maximum value of the bending distortion over the entire winding process, and the bending distortion over the entire length of the winding conductor at that time is set. It is possible to determine the range.
This example is an example for one round along the outer shape of the winding at the time of heat treatment as the conductor length, but it goes without saying that the cut-out length may be any length,
In general, since the bending strain becomes smaller as the cut length becomes longer, it is possible to find the radius of the conductor supply drum that can make the bending strain within an allowable range.

As described above, the winding apparatus of the present invention uses the conductor supply drum having a diameter larger or smaller than the winding diameter of the superconducting conductor at the time of heat treatment, and the heat treatment electromotive conductor is provided on the conductor supply drum. The conductor is supplied from the conductor supply port while rotating the conductor supply drum appropriately, using a conductor supply drum having no moving mechanism, and winding the conductor within a permissible value range. This is a winding device that enables to wire.

In other words, the method of winding the heat-treated superconducting conductor is such that the heat-treated superconducting conductor has a diameter larger or smaller than the winding diameter of the superconducting conductor at the time of heat treatment, and can be rotated at a fixed position. The heat-treated superconducting conductor is pulled out from the conductor supply drum while restricting the bending distortion of the heat-treated superconducting conductor, and is arranged at the winding start position on the bobbin. The bending strain of the heat-treated superconductor by adjusting the bending strain of the heat-treated superconductor by rotating the conductor supply drum at a fixed position in accordance with the evaluation of the bending strain. This is a method for winding a heat-treated superconducting conductor for forming a winding.

In adjusting the bending strain, the position of the conductor supply port for supplying the heat-treated superconducting conductor from the conductor supply drum, the winding position where the conductor is wound around the bobbin, and the conductor length between the conductor supply port and the winding position are adjusted. It is desirable to do.

Further, in adjusting the bending strain, the angle at which the heat-treated superconducting conductor is pulled out with respect to the tangential direction of the conductor supply drum at the conductor supply port, and the heat-treated superconductivity with respect to the tangential direction of the bobbin at the winding position wound around the bobbin. The angle of the conductor can also be adjusted.

[0024]

As described above, according to the method for winding a heat-treated superconducting conductor of the present invention, when winding a metal compound or oxide-based heat-treated superconductor, the diameter is larger or smaller than the diameter at the time of heat treatment. Since winding is performed once after winding on the conductor supply drum, a mechanism for moving the conductor supply drum is unnecessary, and guidelines for bending distortion control are given during winding work, so distortion control is easy. become.

Further, a position separated from the conductor supply drum,
Since the conductor length between the position where the conductor is wound around the winding frame is kept constant, the bending distortion can be easily controlled.

Further, since the position at which the metal compound-based or oxide-based heat-treated superconducting conductor is separated from the conductor supply drum, the position at which it is wound on the bobbin, and the length of the conductor therebetween are adjusted, the bending strain can be easily controlled. .

In addition, since the angle of the metal compound or oxide-based heat-treated superconducting conductor with respect to the tangential direction of the drum separating the conductor supply drum from the conductor supply drum and the angle of the winding frame wound on the winding frame with respect to the tangential direction are adjusted, a simple operation is achieved. The configuration facilitates control of bending strain.

It is also considered that a part of the winding shape of the metal compound or oxide conductor during the heat treatment was cut out, and the restraint conditions at the position where the end is separated from the conductor supply drum and the position where the end is wound around the winding frame are considered. Evaluate the bending strain during winding of the conductor by matching them, so there is no need for a mechanism for moving the conductor supply drum, and a guideline for bending strain control is given at the time of winding work. Becomes easier.

Further, in order to suppress the bending strain during the winding of the metal compound or oxide heat-treated superconducting conductor to a certain level or less, a part of the winding shape of the metal compound or oxide conductor during the heat treatment is reduced. The bending distortion of the conductor during winding was evaluated in accordance with the constraint conditions at the position where the end was separated from the conductor supply drum and the position where the conductor was wound around the bobbin, and the radius of the conductor supply drum and heat treatment were considered. The position of the used superconducting conductor away from the conductor supply drum, the angle and the position to be wound on the bobbin, the angle, and the conductor length between them are set, so a mechanism for moving the conductor supply drum is unnecessary, and during winding work Since guidelines for bending strain control are provided, strain control is facilitated.

Further, the method of winding the heat-treated superconductor is as follows:
In order to form a winding by winding a compound-based or oxide-based heat-treated superconductor, the heat-treated superconductor may have a diameter larger or smaller than the winding diameter of the superconductor during the heat treatment, and may be rotated in a fixed position. Wound on a conductor supply drum,
The heat-treated superconducting conductor was pulled out from the conductor supply drum while limiting the bending strain of the heat-treated superconducting conductor, placed at the winding start position on the bobbin, and the finite element method was used as the winding of the heat-treated superconducting conductor progressed. The bending strain is evaluated by analysis, and the conductor supply drum is rotated at a fixed position according to the bending strain evaluation, thereby adjusting the bending strain of the heat-treated superconductor and winding the heat-treated superconductor to form a winding. How to Therefore, a mechanism for moving the conductor supply drum is unnecessary, and a guide for bending distortion control is provided at the time of winding work, so that distortion control becomes easy.

In adjusting the bending strain, the position of the conductor supply port for supplying the heat-treated superconducting conductor from the conductor supply drum, the winding position where the conductor is wound around the bobbin, and the conductor length between the conductor supply port and the winding position are determined. To adjust,
Adjustment of bending strain can be performed efficiently.

In adjusting the bending strain, the angle at which the superconducting conductor is drawn out of the conductor supply port with respect to the tangential direction of the conductor supplying drum and the heat treatment is performed on the tangential direction of the bobbin at the winding position where it is wound around the bobbin. Since the angle of the superconducting conductor is adjusted, the bending distortion can be adjusted efficiently.

[Brief description of the drawings]

FIG. 1 is a schematic view for explaining one embodiment of a method for winding a heat-treated superconducting conductor of the present invention.

FIG. 2 is a diagram showing a method of reducing bending strain to an allowable value or less in a method of winding a heat-treated superconductor according to the present invention.

FIG. 3 is a diagram showing a conventional method of winding a heat-treated superconductor.

[Description of Signs] 21 Conductor supply drum, 22 Heat-treated superconducting conductor,
23 conductor supply port, 24 conductor bending machine, 25 plate (reel).

Continuing from the front page (72) Inventor Tsuneaki Minato 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Yoshiyuki Tsuda 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Co., Ltd. Inside the company (72) Inventor Toshiyuki Ando 801 Mukayama, Naka-machi, Naka-gun, Ibaraki Pref. Inside the superconducting magnet lab, Nuclear Research Institute, Japan Atomic Energy Research Institute (72) Inventor Takaaki Isono, 801 Mukaiyama, Nakamachi, Naka-gun, Ibaraki Pref.Japan Atomic Energy Research Institute Inside, Superconducting Magnets Lab. F-term (reference) in the Superconducting Magnet Laboratory, Nuclear Research Institute, Faculty of Fusion Engineering 5E002 AA01 AA06 AA11 AA14 AA19 5G321 AA01 AA11 BA03 DA99

Claims (9)

[Claims] When a metal compound or oxide-based heat-treated superconducting conductor is wound, the heat-treated superconducting conductor is wound once on a conductor supply drum larger or smaller than the diameter at the time of heat treatment and then wound. Winding method. 2. A method of winding a metal compound-based or oxide-based heat-treated superconducting conductor, wherein a conductor length between a position separated from the conductor supply drum and a position wound around the winding frame is kept constant. . 3. A position where the metal compound or oxide-based heat-treated superconducting conductor is separated from the conductor supply drum, a position where the superconducting conductor is wound around the bobbin, and a conductor length therebetween.
The method for winding the heat-treated superconductor described above. 4. The method according to claim 1, wherein an angle with respect to a tangential direction of a drum that separates the metal compound-based or oxide-based heat-treated superconductor from the conductor supply drum and an angle with respect to a tangential direction of a bobbin wound around the bobbin are adjusted. Method of winding superconducting conductor after heat treatment. 5. It is considered that a part of the winding shape of the metal compound or oxide conductor at the time of heat treatment is cut out, and the constraint conditions at the position where the end is separated from the conductor supply drum and the position where the end is wound around the winding frame are considered. A method for winding a heat-treated superconducting conductor that evaluates the bending strain during winding of the conductor by matching. 6. A part of a winding shape of a metal compound or oxide-based conductor at the time of heat treatment in order to suppress a bending strain at the time of winding of a metal compound or oxide-based heat-treated superconducting conductor to a certain amount or less. The bending distortion of the conductor during winding was evaluated in accordance with the constraint conditions at the position where the end was separated from the conductor supply drum and the position where the conductor was wound around the bobbin, and the radius of the conductor supply drum and heat treatment were considered. 2. The method for winding a heat-treated superconducting conductor according to claim 1, wherein a position, an angle, a position to be wound around the bobbin, an angle, and a conductor length therebetween of the processed superconducting conductor are set. 7. In order to form a winding by winding a metal compound-based or oxide-based heat-treated superconducting conductor, the heat-treated superconducting conductor has a diameter larger or smaller than the winding diameter of the superconducting conductor at the time of heat treatment. Holding and winding on a conductor supply drum that can rotate in a fixed position, pulling out the heat-treated superconducting conductor from the conductor supply drum while restricting bending distortion of the heat-treated superconducting conductor, to a winding start position on a bobbin. Arrange, evaluate the bending strain by analysis using the finite element method as the winding operation of the heat-treated superconducting conductor progresses, and rotate the conductor supply drum at a fixed position according to the evaluation of the bending strain, A method for winding a heat-treated superconducting conductor, wherein the winding is formed by winding the heat-treated superconducting conductor while adjusting the bending strain of the heat-treated superconducting conductor. 8. In adjusting the bending strain, a position of a conductor supply port for supplying the heat-treated superconducting conductor from a conductor supply drum, a winding position for winding around a bobbin, and a position between the conductor supply port and the winding position. The method for winding a heat-treated superconductor according to claim 7, wherein the length of the superconductor is adjusted. 9. A method for adjusting the bending strain, wherein a drawing angle of the heat-treated superconducting conductor with respect to a tangential direction of the conductor supply drum at the conductor supply port and a tangent of the bobbin at a winding position wound around the bobbin. The method for winding a heat-treated superconducting conductor according to claim 7, wherein an angle of the heat-treated superconducting conductor with respect to a direction is adjusted.