Nuovo Pignone Holding S.p.a.

Nuovo Pignone Holdings, S.p.a.

Nuovo Pigone Holding S.p.a.

Eugenio Rossi

Gianluca Rocchi

Antonio Pelagotti

A cylindrical blade for a rotor of the purely radial type of a centrifugal compressor with a medium-high flow coefficient comprises a first surface ( ) of the pressure side and a second surface ( ) of the suction side of equal curvature with generatrices parallel to the axis (Z) of rotation of the rotor, the lines of curvature of the said surfaces ( ) being defined, in a system of Cartesian coordinates (X, Y, Z) by the ratio between the coordinates of a discrete set of points ( ) belonging to them and the outer radius (R) of the rotor ( ).

Rotor blade for centrifugal compressor with a medium-high flow coefficient

A cylindrical blade for a rotor of the purely radial type of a centrifugal compressor with a medium flow coefficient comprises a first surface ( ) of the pressure side and a second surface ( ) of the suction side of equal curvature, both having generatrices parallel to the axis (Z) of rotation of the rotor, in which the line ( ) of curvature of the said surfaces ( ) is defined, in a Cartesian reference system, by the ratio between the coordinates of a discrete set of points ( ) belonging to the line and the outer radius (R) of the rotor ( ).

Rotor blade for centrifugal compressor with a medium flow coefficient

Stator blading ( ) of return channels for two-dimensional centrifugal stages of a multi-stage centrifugal compressor with improved efficiency, of the type comprising a plurality of blades ( ) disposed circumferentially equally spaced on a ring ( ) which surrounds a rotor of the compressor, these blades ( ) each having a cross-section in the shape of a half-moon formed by a concave area ( ) and a convex area ( ), these concave ( ) and convex ( ) areas being connected to one another such as to determine a trailing edge ( ) and a leading edge ( ) on an inner radius (R); the profile of the concave area ( ) of each blade ( ) is produced by connecting to one another points which have particular Cartesian co-ordinates relative to a system of axes which are at right-angles to one another, of x-co-ordinates (X) and y-co-ordinates (Y) with an origin (O) located on the axis of rotation.

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Viareggio, Italy

Eugenio Rossi