FIXED DIFFUSER VANES ASSEMBLY FOR GUIDING FLOW THROUGH TURBOMACHINE, COMPRISING INTERNAL PLATFORM WITH INBUILT REINFORCEMENTS AND ASSOCIATED TURBOMACHINE AND PRODUCTION METHOD Russian patent published in 2018 - IPC F01D11/00 F01D9/02 

FIELD: machine building.

SUBSTANCE: fixed diffuser vanes assembly of a gas turbine engine comprises an internal annular platform and a plurality of fixed vanes which are mounted on this platform. Internal platform comprises a support plate forming the base of said vanes, a radial annular partition extending from the support plate toward an axis of the vanes assembly, and an internal ring attached to the radial annular partition and having an internal surface on which an abradable material is arranged. Vanes assembly comprises at least one cut-out delimiting a tongue, the tongue being bent to press against the radial annular partition. Another invention of the group relates to a gas turbine engine comprising the above-mentioned vane assembly. In the manufacture of vane assembly, a U-shaped cut-out is formed in the crown to restrict at least one tongue. Area of the tongue is bent at right angles to the crown. Crown is attached to the radial partition of the inner annular platform of the vane assembly so that the radial partition comes in contact with the outer annular surface of the crown and that the area of the tongue bent at right angles to the crown rests on said partition.

EFFECT: group of inventions allows to reduce the weight of the gas turbine engine.

11 cl, 4 dwg