TURBOMACHINE CASCADE Russian patent published in 2003 - IPC

FIELD: electromechanical engineering. SUBSTANCE: turbomachine cascade has intersection channels and blades forming them; the latter have curved center line in their cross- sectional area on meridian surface with its front point facing working medium flow; from apex of curve line gradually descends to chord joining both ends of center line at monotonous reduction of inclination angle between tangent to chord and center line down to zero value from front point to curve apex. Center line of cross-sectional areas is disposed on one side of chord and joined with the latter at rear point of section forming acute angle of inclination whose magnitude within length from rear point to curve apex first monotonously rises and then gradually comes down. Blade section is symmetrical relative to center line. Chord is drawn on meridian surface as smooth line crossing current meridians of this surface at acute angle. Inclination angle is measured between intersecting tangents drawn to two opposite points on chord and center line. EFFECT: enhanced turbine efficiency. 14 cl