Patent attributes
There is provided a gas turbine capable of improving the durability of a main shaft by absorbing the deformation of a casing due to heat and pressure and suppressing stresses acting on the main shaft. A link plate 31 of a movable supporting leg 30 that supports a casing 26 of a gas turbine 20 on the turbine 24 side is installed beforehand in an inclined manner at an angle θ1, whereby the displacement X of a lower casing 26L in the height direction; which occurs between a pin 31a in a top end portion of the link plate 31 and a top surface of a lower casing 26L when the operation status of the gas turbine 20 shifts from a stop condition to an operating condition is compensated for. This prevents a main shaft 25 from changing in the height direction in the part of the movable supporting leg 30 and suppresses bending stresses acting on the main shaft 25.
