BLADE WITH CHANGEABLE INSTALLATION ANGLE AND ITS MANUFACTURING METHOD, STATOR SECTION UNIT, STATOR SECTION, TURBOMACHINE MODULE AND TURBOMACHINE Russian patent published in 2014 - IPC F04D29/56 F01D17/16 F01D9/02 

FIELD: engines and pumps.

SUBSTANCE: blade with changeable installation angle for turbomachine module stator section includes an active part of the blade, on which sides there arranged are radially inner and outer flanges. Active part of the blade divides inner flange to the first part located on the side of the blade convex surface and the second part located on the side of the blade concave surface. The first part of inner flange has external outline overlapping the circle at a distance from which and inside which there located is a part of external outline of the second part of inner flange. The other inventions of the group relate to stator section unit including above blade, to stator sections including such unit, to turbomachine module, including such section, and to turbomachine including this module. During manufacturing of the blade with changeable installation angle, radially performed is an inner flange from round profile machined in a circumferential direction forming the second part of this flange.

EFFECT: group of inventions allows increasing blades service life due to reduction of friction between the blade inner flange and its retaining ring.

12 cl, 7 dwg