| 摘要 |
PURPOSE:To prevent the fluctuation of members at the cryogenic temperature time by inserting wavy spacers into the gaps between the outside surface of a race track-shaped superconductive field coil and a mounting shaft and between the inside surface of the field coil and a core seat and fixing the field coil and a strain seat to the field coil mounting shaft. CONSTITUTION:A cylindrical field coil mounting shaft 2 is engaged with a rotor shaft. A superconductive field coil 3 is buried in the shaft 2 formed in a race track shape. Wave-shaped spacers 11, 12 which use elastic material are inserted into the gap 15 between the outside surface of the coil 3 and the shaft 2 and the gap 16 between the inside surface and a core seat 4, are fixed radially by covering the entire surface on the coil 3 and core seat 4 with retainers 9 through seat packing 8 made of an elastic material, and screwing and fixing bolts 10 which passes the retiners 9 and the packing 8 to the shaft 2. In this manner, even if the members are contracted at the cryogenic temperature time, the produced gaps can be buried with the spacers and packings, thereby preventing the fluctuation of the members. |
