DIFFUSER OF COOLING STREAM TO COMBUSTOR LINER AND METHOD ASSOCIATED THEREWITH

PROBLEM TO BE SOLVED: To provide a combustor part that contributes effectively and efficiently to a cooling action on a combustor liner so as to cause a reduction in effects of a local temperature gradient and high pressure loss. SOLUTION: The combustor part includes a hollow cylindrical body which is provided with a plurality of annular shoulders (26) axially separated from one another in at least one section (122) of the hallow cylindrical body. A plurality of rings (124) is provided on inner surfaces of the sections of the cylindrical body so that the rings align with the annular shoulders to form a plurality of similar annular slots (128). In the sections of the cylindrical body, a plurality of cooling holes (130) is provided in such a manner as to overlap radially the rings, thus supplying cooling air to the annular slots. On radial outer surfaces of the rings (124), there is provided a plurality of diffusers (32) of stream so that the diffusers align with the cooling holes (130), thus diffusing the cooling air flowing through the cooling holes (130). COPYRIGHT: (C)2010,JPO&INPIT