WALL OF A HOT GAS PATH COMPONENT OF A GAS TURBINE AND METHOD FOR ENHANCING OPERATIONAL BEHAVIOUR OF A GAS TURBINE

摘要

The invention refers an insert element (1) for closing an opening (2) inside a wall of a hot gas path component (3) of a gas turbine, the insert (1) comprising: a plate like body with an opening sided surface, said surface provides at least one first area (4) which projects beyond at least one second area (5) of said surface which surrounds the at least one first area (4) frame-like, the at least one first area (4) is encompassed by a circumferential edge (6) corresponding in form and size to said opening (2) such that the circumferential edge (6) and the opening contour limit a gap (7) at least in some areas while the at least one second area (5) contacts directly or indirectly the wall of the hot gas path component (3) at a rear side (8) facing away from the hot gas path (9), and the plate like body provides at least a first functional layer-system (10), providing at least one layer made of heat resistant material, defining the first area (4) of the surface (S).