Mitsubishi Heavy Industries Limited

Yoshiko Oya

Yoshiyuki Okabe

Koichiro Iida

Masato Araki

A gas turbine includes a rotor that has a rotor disk at each of a plurality of stages and a plurality of blades fixed to the respective stages, a casing, a plurality of vanes fixed to the casing, and an annular member fixed to a radially inner side of each of the vanes. The rotor disk has a seal arm. The annular member has an outer opposing portion that is radially opposed to the seal arm. The gas turbine further includes a seal fin that protrudes from the outer opposing portion toward the seal arm, a first cavity that is defined in the annular member and extends in a circumferential direction to straddle at least two of the vanes, a second cavity that is on a radially inner side of the first cavity, and a plurality of compressed air discharge paths that connect the first cavity to the second cavity.

Gas turbine

A compressor rotor includes a first outer cavity formed in a rotor main body and into which air on a high-pressure side of blades is to be introduced, a first inner cavity formed in the rotor main body on an inner side in a radial direction of the first outer cavity; and a first communication passage which connects the first outer cavity and the first inner cavity to each other in the radial direction of the first outer cavity. Along an entire length of the first communication passage from the first outer cavity to the first inner cavity, the first communication passage is inclined toward a forward side of a rotation direction of the rotor main body.

Growing community of inventors

Tokyo, Japan

Yoshiko Oya