COMPRESSOR STATOR FOR TURBOMACHINE Russian patent published in 2017 - IPC F01D25/24 F01D9/04 

FIELD: machine engineering.

SUBSTANCE: compressor stator of the turbomachine, divided into sectors, contains bonded sectors forming the outer and inner concentric rings, between which the blades are arranged. The outer ring is externally provided with a fastening means with an outer housing and comprises a sidewall extending between the front and rear sides of the outer ring. The fastening means is axially displaced relative to the rear side of the outer ring and comprises, relative to the direction of flow passing through the blades, either the front and rear angular peripheral projecting engagement edges or the annular flange. The front angular peripheral projecting engagement edge is located at the level of the front side of the outer ring of the mentioned sectors, and the rear angular peripheral projecting engagement edge is displaced from the rear side of the outer ring. The rear angular peripheral projecting engagement edge and the end of the rear angular engagement edge are located in the middle of the blades between their front and rear edges. The front and rear angular peripheral engagement edges are configured to fit into the holding grooves of the outer housing. The annular flange is provided along the periphery of the outer ring and is located above the blades between their front and rear edges. The annular flange is located in the middle of the front and rear edges of the blades in the thickest area of the blade located in the center of the blade. The annular flange contains a plurality of apertures receiving fixing bolts for its attachment to the outer housing.

EFFECT: increased fatigue strength of the compressor stator of the turbomachine.

4 cl, 4 dwg