Patent ID: 8366391

Claim:
A turbine blade structure, comprising: an airfoil having a leading edge, a trailing edge, and a space therewithin divided into a plurality of cavities, partitioned by rib members provided substantially perpendicular to a center line connecting said leading edge and said trailing edge, the plurality of cavities including a cavity located in a leading-edge side of a blade, a cavity located in a trailing-edge side of the blade, and the cavities located in a central portion of the blade between the leading-edge side and the trailing-edge side, a plurality of partition members that partition insides of the cavities located in the central portion of the blade into a blade pressure side and a blade suction side substantially along the center line, said rib members having engagement grooves, a labyrinth seal mechanism disposed between the partition members and the engagement grooves, and wherein blade leading-edge end portions and blade trailing-edge end portions of the partition members are inserted from one shroud surface side to the other shroud surface side along engagement grooves formed on the rib members.