Coupling assembly for mutually coupling a generator rotor having a superconductive exciter winding and a shaft carrying exciter current leads

Claim 1

Assembly for mutually coupling a generator rotor having a superconductive exciter winding and a shaft carrying exciter current leads, and wherein disconnectible electrical, hydraulic and mechanical connections are located in vicinity of the coupling assembly and extend in axial direction of the rotor and the shaft, the coupling assembly comprising, in combination, a pair of couplng halves defining in the interior thereof a hollow chamber gas-tightly sealed against outer atmosphere, the disconnectible connections being located in said hollow chamber and including releasable plug connection halves, respectively comprising mutually telescoping socket-like plug members for a liquid-coolant circulatory system and for the exciter current leads, said plug connection halves being located, respectively, facing the rotor and the shaft, said telescoping socket-like plug members being displaceable in axial direction thereof relative to one another upon insertion thereof in and disconnection thereof from one another and upon thermal expansion thereof, a coaxial channel formed in the shaft, a leak suction chamber surrounding the shaft at the end thereof distant from said coupling halves, said coaxial channel connecting said hollow chamber to said leak suction chamber, and an expansion compensating device disposed in said hollow chamber and vacuum-tightly and axially displaceably connecting to the rotor, the plug connection halves facing the rotor, said expansion compensating device having an end wall, the rotor-facing plug connection halves comprising the respective plug members for the circulatory system and for the exciter current leads and being connected to said end wall of said expansion compensating device.