Insert element for closing an opening inside a wall of a hot gas path component of a gas turbine and method for enhancing operational behaviour of a gas turbine

摘要

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

主权项

1. An insert element for closing an opening inside a wall of a hot gas path component of a gas turbine, the insert comprising:
a disc body with a surface (S) configured to face the opening, said surface provides at least one first area which projects in a direction perpendicular to the surface beyond at least one second area of said surface, the at least one second area framing the at least one first area, the at least one first area is encompassed by a circumferential edge corresponding in form and size to said opening such that the circumferential edge and the opening contour limit a gap at least in some areas while the at least one second area contacts directly or indirectly the wall of the hot gas path component at a rear side facing away from the hot gas path, and the disc body includes a first functional layer-system, including at least one layer made of heat resistant material, defining the first area of the surface (S) as planar.