CPC F04D 29/668 (2013.01) [F04D 29/541 (2013.01); F05D 2220/32 (2013.01); F05D 2240/12 (2013.01); F05D 2260/38 (2013.01); F05D 2260/96 (2013.01)] | 6 Claims |
1. A turbo machine comprising rotor blades, stator vanes positioned behind the rotor blades, a vibration reduction device for the stator vanes, the vibration reduction device comprising:
an annular base member having a cylindrical shape concentric around a central axis of a casing of the turbo machine and supporting base ends of the stator vanes which extend radially inward from an inner circumferential surface of the base member;
an elastomeric damping member surrounding and in slidable contact with an outer circumferential surface of the base member; and
a preloader surrounding an outer circumferential surface of the elastomeric damping member and configured to apply a preload directed radially inward to the elastomeric damping member,
wherein the preloader includes a cylindrical member circumferentially surrounding the elastomeric damping member, and
the preloader further includes a band member surrounding the cylindrical member, and a fastener configured to pull two ends of the band member toward each other and apply tension to the band member.
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