Patent ID: 7069716
Filing Date: 2006-07-04
Classification: F01D,F23G

Abstract:
1. A cooling air distribution apparatus contained within a turbine engine exhaust system in communication with, and downstream of, a turbine engine producing an exhaust gas flow having a first temperature and upstream of a catalyst, wherein said first temperature of said exhaust gas is of such a high temperature that the performance and longevity of said catalyst is reduced, said apparatus comprising: a cooling air distribution housing having an inlet end, an outlet end and a substantially circular wall therebetween defining a substantially circular passage to allow said exhaust gas flow to travel from said turbine engine and to said catalyst; a plurality of cooling air distribution conduits extending through said substantially circular wall and into said substantially circular passage, each of said plurality of cooling air distribution conduits providing passage for cooling air having a second temperature into said substantially circular passage to homogeneously mix with said exhaust gas flow, said second temperature of said cooling air being lower than said first temperature of said exhaust gas flow such that said exhaust gas flow is cooled to an appropriate temperature to maintain said catalyst's performance characteristics; and a cooling air providing assembly in communication with said cooling air distribution housing providing said cooling air to each of said plurality of cooling air distribution conduits.