Patent ID: 8740550

Claim:
A structure of an exhaust section of a gas turbine, comprising: a casing defining a gas path part and an opening therein; a bearing part for rotatably supporting a rotor having moving blades of a turbine section; a strut extending inwardly from the casing and supporting the bearing part; a strut cover extending along the strut to define a space between the strut and the strut cover; and an internal diffuser extending along a rotational axis of the turbine section to form an air space surrounding the bearing part; wherein the space defined between the strut and the strut cover extends from the opening toward the bearing part along the strut, and wherein the air space surrounding the bearing part is in communication with the space defined between the strut and the strut cover to form a cooling flow channel together with the space defined between the strut and the strut cover, the cooling flow channel guiding air from the opening to the air space surrounding the bearing part via the space defined between the strut and the strut cover, and wherein the cooling flow channel has an another opening for guiding air from the opening to the gas path part and introducing the air into the gas path part at a position downstream of a last-stage moving blade of the turbine section.