| 摘要 |
<p>The invention relates to a cooled wall segment in the hot gas path of a gas turbine, particularly to a cooled stator heat shield The wall segment according to the invention at least comprises a first surface (11), exposed to a medium of relatively high temperature, a second surface (12), exposed to a medium of relatively low temperature, and at least one cooling channel (14, 14', 14") for a flow-through of a fluid cooling medium (15) whereby the cooling channel (14, 14', 14") comprises at least two heat transfer sections (18, 22), a first heat transfer section (18) extending essentially parallel to the surface (11) of relatively high temperature in a first distance (19) and a second heat transfer section (22) extending essentially parallel to the surface (11) of relatively high temperature in a second distance (23), whereby the second distance (23) is lower than the first distance (19).</p> |
