Patent ID: 7481037

Claim:
A cooling construction of a transition piece of a gas turbine comprising: a first protrusion and a second protrusion that are mounted on said transition piece orthogonally to a main stream direction of said transition piece on a gas turbine inside diameter side of said transition piece and adjacent to an outlet portion of said transition piece; an impingement-cooling plate that is fixed at one end in a cantilever state to said first protrusion, and is contacted at a tip of the other end of said impingement-cooling plate with said second protrusion so as to move back and forth along said second protrusion in response to thermal stress generated therearound; an elastic plate that is fixed at one end to said second protrusion, and is contacted at the other end of said elastic plate with said other end of said impingement-cooling plate; and a pin that is provided on said transition piece for securing a predetermined gap between said transition piece and said impingement-cooling plate, wherein said elastic plate seals a gap between said transition piece and said impingement-cooling plate.