Abstract: A steam valve 10 of an embodiment includes: a valve element 32 of a steam control valve 30, the valve element 32 being provided to be movable in an up and down direction; a valve element 42 of a main stop valve 40, the valve element 42 being provided under the valve element 32 coaxially with the valve element 32 to be movable in the up and down direction; a valve seat 60 with which the valve element 32 and the valve element 42 come into and out of contact; and a guide tube 43 slidably supporting a valve rod 41 including the valve element 42, and having a flange portion 43a at a bottom side in a casing 20.

Abstract: A steam valve 10 of an embodiment includes: a valve element 32 of a steam control valve 30, the valve element 32 being provided to be movable in an up and down direction; a valve element 42 of a main stop valve 40, the valve element 42 being provided under the valve element 32 coaxially with the valve element 32 to be movable in the up and down direction; a valve seat 60 with which the valve element 32 and the valve element 42 come into and out of contact; and a guide tube 43 slidably supporting a valve rod 41 including the valve element 42, and having a flange portion 43a at a bottom side in a casing 20.

Abstract: In one embodiment, a steam turbine facility includes drain piping in which a shut-off valve is provided, the drain piping being either a valve drain pipe that leads a drain from the main steam regulating valve to an outside thereof, or a casing drain pipe that leads a drain from the turbine casing to an outside thereof. A heat absorber disposed in a range, upstream of the shut-off valve, of the drain piping to absorb heat of the drain piping.

Abstract: A steam valve 10 of an embodiment includes: a valve element 32 of a steam control valve 30, the valve element 32 being provided to be movable in an up and down direction; a valve element 42 of a main stop valve 40, the valve element 42 being provided under the valve element 32 coaxially with the valve element 32 to be movable in the up and down direction; a valve seat 60 with which the valve element 32 and the valve element 42 come into and out of contact; and a guide tube 43 slidably supporting a valve rod 41 including the valve element 42, and having a flange portion 43a at a bottom side in a casing 20.

Abstract: A steam turbine pipe 1 in an embodiment is a steam turbine pipe in a steam turbine facility. The steam turbine pipe 1 includes: a steam passage 30a that leads steam from a boiler to a steam turbine; and a branching passage 40 that branches off from the steam passage 30a. The steam turbine pipe 1 further includes: a shutoff valve 32 that intervenes in the branching passage 40; and a reduced pipe part 31b that is provided at a part of the branching passage 40 between the steam passage 30a and the shutoff valve 32 and made by reducing a passage cross section of the branching passage 40.

Abstract: In one embodiment, a steam turbine facility includes drain piping in which a shut-off valve is provided, the drain piping being either a valve drain pipe that leads a drain from the main steam regulating valve to an outside thereof, or a casing drain pipe that leads a drain from the turbine casing to an outside thereof. A heat absorber disposed in a range, upstream of the shut-off valve, of the drain piping to absorb heat of the drain piping.

Abstract: A steam valve 1 includes: a valve seat 9 being accommodated in a steam flow path of a casing 2 provided with a steam inlet pipe 14 and a steam outlet pipe 15; and a valve body 22, 27 capable of contacting the valve seat 9, the valve body 22, 27 being accommodated in the steam flow path of the casing 2. An expansion part 10 that smoothly projects toward an inside of the steam outlet pipe 15 is disposed at a downstream side on a contact surface of the valve seat 9.

Abstract: A steam valve 1 includes: a valve seat 9 being accommodated in a steam flow path of a casing 2 provided with a steam inlet pipe 14 and a steam outlet pipe 15; and a valve body 22, 27 capable of contacting the valve seat 9, the valve body 22, 27 being accommodated in the steam flow path of the casing 2. An expansion part 10 that smoothly projects toward an inside of the steam outlet pipe 15 is disposed at a downstream side on a contact surface of the valve seat 9.