Patent ID: 6390769
Filing Date: 2002-05-21
Classification: F01D,F05D

Abstract:
lmpingement cooling apparatus for a turbine shroud assembly having inner and outer walls spaced from one another to define a cooling cavity therebetween, comprising:partition walls provided in said cavity to define at least four cooling chambers within said cavity, each said cooling chamber having a cooling medium inlet and a cooling medium outlet and defining a cooling medium flow path therethrough; an impingement baffle being disposed in each said chamber to define upstream and downstream compartments therewithin, each said impingement baffle having a plurality of flow openings therethrough for communicating cooling medium between said compartments through said openings; each said upstream compartment being in flow communication with the respective cooling medium inlet and each said downstream compartment being in flow communication with the respective cooling medium outlet; a supply passage in communication with a first of said cooling chambers for supplying cooling medium to said upstream compartment of said first chamber for flow through the openings of the impingement baffle thereof into said downstream compartment of said first chamber for impingement cooling of said inner wall; an exhaust passage in communication with a fourth of said cooling chambers for exhausting post-impingement cooling medium from said downstream compartment of said fourth chamber.