Steam Valve And Power Generation System

Abstract: A steam valve according to at least an embodiment of the present disclosure is provided with a valve body comprising: a flow path partition part that partitions a steam flow path through which steam flows; and a valve seat provided halfway through the steam flow path and having an opening part. The steam valve according to at least an embodiment of the present disclosure is provided with a stop valve. The stop valve comprises a valve rod extending in an axial direction in which an axial line extends, and capable of advancing and retracting in the axial direction. The stop valve comprises a child valve fixed to the tip-end of the valve rod in a tip-end part of the valve rod. The stop valve comprises a parent valve that: includes a penetration part into which a portion of the tip-end part of the valve rod that is positioned closer to the base end side of the valve rod than to the tip-end is inserted; closes the steam flow path when abutted on the valve seat; and has a penetration hole into which steam flows when the child valve is opened. The stop valve comprises a guide part that is movable in the axial direction together with the parent valve, and that slidably guides a lateral surface of the child valve along the axial direction.

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