Magnetic bearing for a rotor shaft has permanent magnets attached to the air sealed shaft rotating within an air gap to a superconducting magnetic field

摘要

The shaft (2) has permanent magnets (4) fixed to a sleeve (6) and having spaces (5) between and an air gap (14) to a superconducting magnetic winding (10) held a 77K from a cold source (11). Rotary seals (15) exclude damp ambient air and dry nitrogen flushing gas is delivered through an inlet (20).