Patent ID: 8206093

Claim:
A gas turbine, comprising: a passage wall to delimit a flow, wherein the passage wall has a first wall section and an adjacent second wall section, wherein the first wall sections is part of a combustion chamber of the gas turbine, and the second wall sections is part of an annular hot gas passage of a turbine unit; a gap, wherein the adjacent wall sections lie opposite each other on the end face side, forming the gap; a blocking element for sealing the gap, wherein the blocking element extends into the gap and is displaceable transversely to the gap, wherein the blocking element projects from the first wall section on the end face side, wherein the blocking element has a piston face guided in the first wall section and a sealing structure opposite to the piston face, wherein the sealing structure is pressed against a sealing section of the second wall section arranged on the end face side based upon a pressurized medium acting on the piston face.