Guide vane stage of a compressor and compressor containing such a vane stage

摘要

The compressor rectifier stage, comprising concentric outer and inner rings connected by blades, has at least the outer ring (5) made from a curved profile (10) with its two ends (30, 31) joined together along a cutting plane by fixings in the form of nuts and bolts through end flanges. The profile has an elasticity that allows the two ends to separate when not fixed and has a dovetail-section channel (7) on its inner surface to receive the ends of inserted blades.