| 摘要 |
PURPOSE:To prevent easy movement in the axial direction of a superconductive wire by taperng the inner diameters of mutual spools of a pair of layer winding circular superconducting coils receiving mutually attractive or repulsive electromagnetic force and facing tapers each other. CONSTITUTION:Winding shaft sections 3'<4>, 4'<4> are formed in tapered structure. Consequently, when superconducting wires are wound so that mutual coils attract by spools 3, the superconducting wires are brought close to flanges 3' and wound tightly. As a result, there is no space in which the superconductive wires can move toward the flanges 3' on conduction, and there is no normal conductive transfer of coils with the movement of the superconductive wires. When currents in the direction of currents in which the wound coils are repulsed are flowed, electromagnetic force works to the superconducting wires so as to be moved in the directions of the flanges 3''. Since winding shafts are thickened in the direction of the flanges 3'', however, the superconducting wires can not move. Accordingly, there is no normal conductive transfer of the coils with the movement of the superconducting wires even in this case. There are no movement in the axial direction of the superconducting wires and normal conductive transfer with the movement of the wires even on the attraction of mutual coils and on their repulsion in the same manner as the spools 3 in spools 4. |
