Rotor of an electrical machine having a superconductive excitation winding

摘要

The rotor of an electrical machine contains a body (2) having a superconductive winding (3) which is mounted thereon and has force tubes (4). Arranged in the interior of the force tubes (4) are thermally insulating tubular plugs (5), each consisting of a plurality of cylindrical elements (6), as well as channels (19) for dissipating the coolant vapours from the winding (3). The channels (19) have sections (10) which are in direct thermal contact with the force tubes (4). The elements (6) lie closely against one another and against the inner surface (8) of the force tube (4). Annular cut-outs (11), which are open towards one end surface (17), are designed in the cylindrical surfaces (9). Annular discs (12) are accommodated in the annular cut-outs (11) and their outer cylindrical surfaces (13) rest tightly against the surfaces (8) of the force tubes (4). The sections (10) are formed by grooves which are designed in the cylindrical surfaces (9). Sections (15-a, 17, 15-b) of the channels (19) are designed between the side surfaces (14) and the inner surfaces (16) of the discs (12) on the one hand and the cylindrical elements (6) on the other hand, which sections (15-a, 17, 15-b) are connected to the sections (10). <IMAGE>