MACHINE FLUIDIQUE A ROTOR DE COMPRESSEUR RADIAL

摘要

A turbo-machine with an impeller containment assembly includes a compressor having a casing 8 formed from an outer spiral housing 10 and an inner housing insert piece 12. The spiral housing 10 is fixed to a bearing housing 1 by a first fixing 18, and the insert piece 12 is fixed to the spiral housing 10 by a second fixing 17. At least one of the spiral 10 or the insert 12 is formed from a material whose elongation at break is 5% or more. The second fixing 17 may be formed from at least one necked bolt which has an elongation at break of 10% or more. Each bolt may be associated with a resilient sleeve (not shown) to improve energy absorption. The second fixing 17 may also be flexible in an axial direction and may be formed such that it breaks more easily than the first fixing 18. The insert 12 may be attached to an inner cylinder 15 of the spiral housing 10 to form a hollow space 16.