Device for securing a superconductive exciter winding in the rotor of a turbogenerator

Device for securing a superconductive exciter winding in a thermally insulating, thermally elastic and short-circuit proof manner within the rotor of a turbogenerator wherein the rotor has a body part thereof formed as a hollow cylinder, comprising a plurality of telescoping intermediate cylinders disposable within the hollow cylinder spaced from and coaxial to one another and to the hollow cylinder, said intermediate cylinders forming cold shields and vibration damping means, the hollow cylinder being closed at both ends thereof, a support cylinder located within and spaced from the innermost of said telescoping intermediate cylinders and adapted to support a superconductive exciter winding on the inner side thereof, said intermediate cylinders as well as said support cylinder are force-lockingly connected one to another with minimal contact areas through pairwise axially transposed articulating points to permit resiliency in radial direction and freedom to expand in axial direction, the spaces between said cylinders being evacuated so as to insulate said cylinders thermally one from the other, and a plurality of cooling circuit means for maintaining said cylinders individually at varying temperature levels.