Patent ID: 8684667

Claim:
A low-pressure steam turbine comprising: an inner casing housing a rotor having a plurality of moving blades fixed thereto, and including a plurality of stationary blades fixed in an inside of the inner casing; an outer casing arranged outside the inner casing so as to cover the inner casing; an exhaust chamber formed between the inner casing and the outer casing, and configured to flow an exhaust through a steam passage in the inner casing; a heat carrier heating channel in the exhaust chamber, surrounding the inner casing so as to enable a heat carrier to flow therethrough, the heat carrier heating channel being configured to enable the heat carrier to be heated by heat exchange with steam outside the heat carrier heating channel; a heat carrier inlet passage configured to introduce the heat carrier into the heat carrier heating channel; and a heat carrier chamber disposed in an inside of at least one of the stationary blades, and being configured to receive the heat carrier that has flowed through the heat carrier heating channel, wherein the at least one of the stationary blades in which the heat carrier chamber is disposed is configured to be heated by the heat carrier which has been heated by the heat exchange with the exhaust outside the heat carrier heating channel.