FIELD: compressor building.
SUBSTANCE: invention relates to compressor building industry. Centrifugal compressor comprises stator with vaneless diffusers, installed coaxially to it rotor on radial and axial bearings with controlled rigidity, made in form of electromagnetic bearings, radial and axial rotor position sensors, end seals. Axial support with controlled rigidity includes at least two axial electromagnets, one of which is intended for operation in zone of gas-dynamically stable operating conditions, and rest are intended for inclusion into action when compressor enters in zone of rotating failure preceding surging, and off at leaving from rotating failure zone preceding surging.
EFFECT: invention allows to enhance economic efficiency and safety of operation of centrifugal compressor.
4 cl, 2 dwg, 1 tbl
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