FIELD: machine building.
SUBSTANCE: method of air flow rate regulation in the centrifugal compressor (10) of the turbo-machine means assurance of air distribution through the first ring grid (G1) of blades (24) with variable installation angle. Along the grid edge in radial direction the second ring grid (G2) of blades with the same number of blades (28) with fixed angle of installation of the same radial length is located. Distribution in radial direction is provided by means of interaction of the blades (24, 28) of two blade grids. Each blade (24) of the first blades grid (G1) is put into rotation along axis (X′X) at some distance from the blade (24).
EFFECT: maintenance of the turbo-machine compressor efficiency and capacity to reduce essentially the exact Cs consumption upon assurance of the sufficient reserve due to surge under partial load.
10 cl, 8 dwg
