PURPOSE: To prevent concentration of a force so as not to exert the force on a coil of the next stage through absorbing a magnetic force of the coil and a tare at each support by providing a void in the interior of a nonmagnetic support rack.
CONSTITUTION: A mutual electromagnetic force is generated between coils 1aW1c from carrying a current in the coils. An electromagnetic force working radially is supported by the coils through rigidity, the electromagnetic force working vertically and the coils' tare are supported by a nonmagnetic support rack 3 made of FRP etc. and a load applied on the support rack is supported by a support pillar 4. A voild 5 is provided circumferentially to the coils in the interior of the support rack 3; where an electromagnetic force is generated from carrying a current in the coil group, an elastic deformation is caused to the support rack 3 by the coils' tare and also the force working on the support rack 3, however, the deformation is absorbed in the void 5 as it is larger than the elastic deformation, and no force is thus exerted on other coils.
OSADA DAIZABUROU
SEKINOU MASATOSHI
YAMADA MASAO
KAMEARI AKIHISA
NISHIKAWA MASAKATA
MITSUBISHI ELECTRIC CORP
MITSUBISHI ATOMIC POWER IND