Patent ID: 8322972
Filing Date: 2012-12-04
Classification: F01D,F05D

Abstract:
1. A stationary vane support for a turbo machine, the stationary vane support coupled to a stationary vane, the stationary vane support comprising: a frusto-conical circumferential extraction band positioned in the stationary vane support, the frusto-conical circumferential extraction band having a first side proximate to an operative fluid flow upstream of the stationary vane; an extraction opening in the first side of the frusto-conical circumferential extraction band; and a channel through the stationary vane support, the channel having a first end in fluid communication with the frusto-conical circumferential extraction band and a second end proximate to a tip region downstream of the stationary vane and upstream of a downstream rotating blade, the channel and the frusto-conical circumferential extraction band configured such that a portion of the operative fluid flow upstream of the stationary vane is redirected through the extraction opening into the frusto-conical circumferential extraction band and through the channel towards an upstream side of the downstream rotating blade.