COOLING CONSTRUCTION OF TRANSITION PIECE OF A GAS TURBINE

摘要

A plate spring 6 having a hook-shaped cross section from the lower part is installed in a neighborhood of one end "b" of an impingement-cooling plate 4. One end "c" on the lower side is fixed to a rib 1d by welding, whil e the other end "b" on the upper side is free, which makes it closely contact with the neighborhood of the other end "b" of the impingement-cooling plate 4 by elastic force thereof. This state makes it possible to seal a gap forme d between the impingement-cooling plate 4 and a transition piece 1 on the side of a rib 1d, preventing thermal stress generated in the rib 1d, for example, from affecting the impingement-cooling plate 4.