Patent ID: 6078120
Filing Date: 2000-06-20
Classification: F04D,F16C

Abstract:
A vacuum turbopump with a magnetic bearing assembly for supporting and maintaining a rotating shaft disposed coaxially within a chamber formed by a vacuum turbopump housing, said assembly comprising:a supporting post disposed coaxially within an interior of said rotating shaft and being rigidly connected to said vacuum turbopump housing, said supporting post having at least one radially extending bore and a longitudinally extending bore;at least a radial and an axial sensor placed within respective radially and longitudinally extending bores in said supporting post for detecting the displacement of said rotating shaft with respect to said supporting post;at least a radial and an axial actuator placed within said chamber, wherein a number of said actuators corresponds to a number of said sensors; andsaid radial actuator is positioned in one cross-sectional plane with the corresponding radial sensor.