Patent ID: 6568187
Filing Date: 2003-05-27
Classification: F01D,F05D,F23R

Abstract:
An effusion cooled transition duct for transferring hot gases from a combustor to a turbine comprising:a panel assembly comprising: a first panel formed from a single sheet of metal; a second panel formed from a single sheet of metal; said first panel fixed to said second panel by a means such as welding thereby forming a duct having an inner wall, an outer wall, a thickness therebetween said walls, a generally cylindrical inlet end, and a generally rectangular exit end, said inlet end defining a first plane, said exit end defining a second plane, said first plane oriented at an angle relative to said second plane; a generally cylindrical inlet sleeve having an inner diameter and outer diameter, said inlet sleeve fixed to said inlet end of said panel assembly; a generally rectangular aft end frame, said frame fixed to said exit end of said panel assembly; a plurality of cooling holes in said panel assembly, each of said cooling holes having a diameter D and separated from the closest adjacent one of said cooling holes by a distance of at least P in the axial and transverse directions, said cooling holes extending from said outer wall to said inner wall, and oriented at an acute angle &bgr; relative to said outer wall at the location of where said cooling hole penetrates said outer wall.