Axially thrust-compensated turbo machine
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United States of America Patent
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May 17, 1994
Grant Date -
N/A
app pub date -
Sep 1, 1992
filing date -
Sep 4, 1991
priority date (Note) -
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Abstract
In a turbo machine with magnetic bearings on both sides and dry gas seals for the rotor, the axial thrust acting upon the rotor and generated by the pressure difference between the pressure side and the suction side is compensated for in that a dry gas seal provided on the suction side and the end of the shaft are acted upon by a certain pressure, which generates a compensating axial thrust, so that the resultant axial thrust becomes as slight as possible. Advantageously, this pressure is regulated via the bearing gap of an axial magnetic bearing of the rotor such that the bearing gas assumes a predetermined value.
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