Abstract: A steam control valve including a valve seat, a valve disc that is abuttable on the valve seat, a valve lifting rod that is linked to the valve disc and extends in a vertical direction, a bushing that supports the valve lifting rod slidably, a lever linked to an upper end of the valve lifting rod, and an actuator that causes the lever to pivot, in which a box section having a downward-facing opening is provided on one end side of the lever, and the box section of the lever loosely fits an overhang section on a side of the valve lifting rod.

Abstract: Provided is a casing deformation amount measuring apparatus for a steam turbine including a casing, a plurality of nuts fixed to an outer surface of the casing, a plurality of bolts individually screwed, at each one side end portion thereof, in the nuts and projecting to an outer side in a diametrical direction of the casing from the outer surface of the casing, and a lagging material held by the plurality of bolts and covering the casing. The casing deformation amount measuring apparatus includes a target mounted on another side end portion of one of the bolts and exposed to the outer side in a diametrical direction of the casing with respect to the lagging material, and a distance meter that is disposed in an opposing relation to the target on the outer side in a diametrical direction of the casing and measures a distance to the target.

Abstract: Provided is a casing deformation amount measuring apparatus for a steam turbine including a casing, a plurality of nuts fixed to an outer surface of the casing, a plurality of bolts individually screwed, at each one side end portion thereof, in the nuts and projecting to an outer side in a diametrical direction of the casing from the outer surface of the casing, and a lagging material held by the plurality of bolts and covering the casing. The casing deformation amount measuring apparatus includes a target mounted on another side end portion of one of the bolts and exposed to the outer side in a diametrical direction of the casing with respect to the lagging material, and a distance meter that is disposed in an opposing relation to the target on the outer side in a diametrical direction of the casing and measures a distance to the target.

Abstract: Provided is a steam valve including a valve seat, a valve disc capable of contacting the valve seat, a valve rod connected or linked to the valve disc, a bush that slidably supports the valve rod, and an actuator that moves the valve disc via the valve rod, in which the valve rod has thereon a plurality of groves depressed to an inner side in a diametrical direction of the valve rod and a plurality of projections formed between the plurality of grooves, and each of the plurality of projections in an axial cross section of the valve rod is shaped so as to have one tip point.

Abstract: A steam control valve including a valve seat, a valve disc that is abuttable on the valve seat, a valve lifting rod that is linked to the valve disc and extends in a vertical direction, a bushing that supports the valve lifting rod slidably, a lever linked to an upper end of the valve lifting rod, and an actuator that causes the lever to pivot, in which a box section having a downward-facing opening is provided on one end side of the lever, and the box section of the lever loosely fits an overhang section on a side of the valve lifting rod.

Abstract: An air refrigerant cooling apparatus has magnetic bearings with high reliability and high efficiency. The air refrigerant cooling apparatus includes a motor having a first magnetic bearing and a second magnetic bearing for supporting a shaft, a compressor and an expansion turbine. The compressor is connected to the shaft and separated from the first magnetic bearing by a first labyrinth. The expansion turbine is connected to the shaft and separated from the second magnetic bearing by a second labyrinth. Pressure differences are generated between spaces where the first magnetic bearing and the second magnetic bearing are provided and respective inlet of the compressor and outlet of the expansion turbine by an external pressure outside the motor.

Abstract: An object of the present invention is to provide an air refrigerant cooling apparatus having magnetic bearings with high reliability and high efficiency. In the present invention, magnetic bearings are applied to a motor of an air refrigerant cooling apparatus which includes a compressor, the motor and an expansion turbine. To remove contamination moving into the inside of the motor from the outside through a labyrinth, a pressure difference is generated between the inside of the motor and the compressor. Thus, high-speed rotation is kept, and an air refrigerant cooling apparatus with high reliability and high efficiency can be attained. Provided near the magnetic bearings are sensors for detecting positions of the shaft in the radial and the axial directions.

Abstract: In a heat storage air conditioning apparatus, a power demand time-sequence data collecting unit collects time-sequence data on demand for power; a power demand curve estimating unit estimates a power demand curve obtained as a result of analysis of the power demand time-sequence data collected by the power demand time-sequence data collecting unit; a thermal energy load demand estimating unit estimates thermal energy load demand from the power demand curve estimated by the power demand curve estimating unit; an operation unit of a thermal-energy source feeds cooling/heating energy; a heat accumulating unit stores the cooling/heating energy supplied from the operation unit therein; a cold/hot air discharging unit discharges the thermal energy stored in the heat accumulating unit; a cooling/heating energy quantity recognizing unit recognizes the quantity of cooling or heating energy dissipated from the cold/hot air discharging unit; and a converting unit converts the quantity of cooling/heating energy into the