Abstract: There is provided a cobalt-based alloy product comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; at least one of Ti, Zr, Hf, V, Nb and Ta, the total amount of Ti, Zr, Hf, V, Nb and Ta being 0.5-2%; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The cobalt-based alloy product is a polycrystalline body of matrix phase crystal grains, wherein MC type carbide phase grains are dispersively precipitated in the matrix phase crystal grains at an average intergrain distance of 0.13 to 2 ?m and M23C6 type carbide phase grains are precipitated on grain boundaries of the matrix phase crystal grains.

Abstract: Provided are a slag crusher, a gasifier, an integrated gasification combined cycle, and an assembly method of a slag crusher that can ensure the strength of a guide rod. The slag crusher includes: a porous member screen; a spreader that is reciprocated in a predetermined direction along a top surface of the screen and crushes the slag accumulated on the screen; and a guide rod having an axis line along the predetermined direction, is connected to the spreader, and restricts a moving direction of the spreader, the guide rod has a spreader-side member connected to the spreader and a shaft member connected to the spreader-side member, the spreader-side member and the shaft member are connected by butt welding in the axis line direction, and the spreader-side member and the shaft member have the same shape of cross sections orthogonal to the axis line direction at a butt welding position.

Abstract: A turbine nozzle includes a plurality of blades arranged so as to form a tapered flow passage between each two adjacent blades. A suction surface of each blade includes a curved surface, and a throat of the flow passage is formed between the curved surface of one blade and a trailing edge of the other blade of the two adjacent blades at a throat position. An upstream end of the curved surface is positioned upstream of the throat position, and a downstream end of the curved surface is positioned downstream of the throat position.

Abstract: There is provided a cobalt-based alloy product comprising: in mass %, 0.08-0.25% C; 0.1% or less B; 10-30% Cr; 5% or less Fe and 30% or less Ni, the total amount of Fe and Ni being 30% or less; W and/or Mo, the total amount of W and Mo being 5-12%; Ti, Nb and Ta, the total amount of Ti, Nb and Ta being 0.5-2%; 0.5% or less Si; 0.5% or less Mn; 0.003-0.04% N; and the balance being Co and impurities. The impurities include 0.5% or less Al, less than 0.05% Zr, and 0.04% or less 0. The product is a polycrystalline body of matrix phase crystal grains. In the matrix phase crystal grains, segregation cells with an average size of 0.13-2 gm are formed, in which components constituting an MC type carbide phase comprising Ti, Nb and/or Ta are segregated in boundary regions of the segregation cells.

Abstract: Reduction of operation efficiency of a GTCS at a time of changing an operation using bypass stack to an operation using HRSG is suppressed.

Abstract: Provided is a high-strength, heat-resistant, Ni-base alloy comprising Co: from 5 to 12%, Cr: from 5 to 12%, Mo: from 0.5 to 3.0%, W: from 3.0 to 6.0%, Al: from 5.5 to 7.2%, Ti: from 1.0 to 3.0%, Ta: from 1.5 to 6.0%, Re: from 0 to 2.0%, and C: from 0.01 to 0.20%. The high-strength, heat-resistant, Ni-base alloy is constituted of a Ni-based alloy, the balance of the Ni-based alloy comprising Ni and inevitable impurities. The density of the high-strength, heat-resistant Ni-base alloy is less than 8.5 g/cm3.

Abstract: A gas turbine plant is provided with a gas turbine, a heating device, a decomposition gas line, and a decomposition gas compressor. The heating device heats ammonia and thermally decomposes the ammonia to convert the ammonia into decomposition gas including hydrogen gas and nitrogen gas. The decomposition gas line sends the decomposition gas PG from the heating device to the gas turbine. The decomposition gas compressor increases the pressure of the decomposition gas to a pressure equal to or higher than a feed pressure at which the decomposition gas is allowed to be fed to the gas turbine.

Abstract: An object of the present invention is to provide a pulverized coal drying system for a pulverizer, a pulverized coal drying method therefor, a pulverized coal drying program, a pulverizer, and an integrated gasification combined cycle capable of stably drying a carbonaceous feedstock irrespective of the type of the carbonaceous feedstock to be used. There is provided a controller (50) of a pulverizer (10) that dries a supplied carbonaceous feedstock by using a drying fluid and includes a flow rate controller that controls the flow rate of the drying fluid within upper and lower limits of the flow rate of the drying fluid that are set to dry a plurality of types or the carbonaceous feedstock having different moisture contents in such a way that the temperature of the drying fluid discharged from the pulverizer (10) approaches a target temperature.

Abstract: A method of forming a sprayed coating includes preparing a spray target member having a surface on which openings of first ends of holes are formed, preparing a plurality of masking pins each of which comprises metal, and inserting each of the masking pins into a corresponding one of the holes so that each of the masking pins partially protrudes from the surface. The method also includes applying an adhesive agent for fixing the masking pins to the respective holes, to at least one of the holes or the masking pins, forming a ceramic layer by spraying on the surface of the spraying target member, the ceramic layer comprising a ceramic material, while the masking pins are fixed to the respective holes via the adhesive agent, and removing the masking pins from the holes after the spraying step.

Abstract: In assembling a turbine including: a casing consisting of an upper half part and a lower half part fastened together by bolts; a stationary body accommodated in the casing and supported by the lower half part; and a rotary body supported by a plurality of bearings so as to be situated on the inner side of the stationary body, there are executed: a procedure of reading a finite element model of the three-dimensional configuration of the turbine; a reading procedure of reading actual measurement information on the three-dimensional configuration of the upper half part and the lower half part of the casing in the open state; a model correction procedure of reflecting actual measurement information of an evaluated portion that is a specific part of the casing in the finite element model and generating a correction model obtained through correction of the finite element model; a deformation amount estimation procedure of estimating the movement amount of the evaluated portion generated when the upper half part and

Abstract: A method for disassembling/assembling a gas turbine including a seal plate disposed on a first side of a rotor disc in an axial direction of the rotor disc, and a seal plate restraint part for restricting movement of the seal plate relative to the rotor disc in a radial direction of the rotor disc includes a seal-plate-restraint-state switching step of moving the seal plate restraint part along the axial direction to switch between a seal plate non-restraint state where the seal plate restraint part does not restrict movement of the seal plate in the radial direction and a seal plate restraint state where at least a part of the seal plate restraint part protrudes in the axial direction from the seal plate and thereby restricts movement of the seal plate in the radial direction.

Abstract: An operation assistance method for presenting a recommended operational action in response to an alert issued in a facility includes: detecting issuance of the alert; extracting, from an alert history storage unit, an issuance history of a same type of alert as the alert of which the issuance or the sign of issuance has been detected; extracting, from an operation history storage unit storing an operation history of the facility, an operational action after issuance of the same type of alert; extracting, from an operational data storage unit storing information indicating an operational state of the facility, information indicating the operational state after the operational action, and verifying an influence of the operational action on the operational state; and presenting the recommended operational action in response to the alert of which the issuance has been detected, based on the extracted operational action and the verified influence.

Abstract: A fuel gas heater includes a container; a gas inflow chamber defined in one end of the container and having a gas inlet; a gas outflow chamber defined in the one end and having a gas outlet; U-shaped heat transfer pipes disposed inside the container, the pipes each having one end communicating with the gas inflow chamber and another end communicating with the gas outflow chamber; a heating medium supply port; a heating medium discharge port; a gas inflow opening disposed to face positions at which the pipes communicate with the gas inflow chamber; a gas inflow lid that enables the gas inflow opening to be opened and closed; a gas outflow opening disposed to face positions at which the pipes communicate with the gas outflow chamber; and a gas outflow lid that enables the gas outflow opening to be opened and closed.

Abstract: There is provided a combustor including a nozzle main body (16) that includes a shaft body (24) which extends along an axis and has, inside the shaft body (24), a purge air flow path (29), which extends along the axis to a tip portion of the shaft body (24) and into which compressed air is introduced, and an air spraying hole (39), which is formed in the tip portion of the shaft body (24) and connects the purge air flow path (29) to an outer surface of the shaft body (24), a swirling blade (26), which overhangs from an outer circumferential surface of the shaft body (24) in a diameter direction of the axis and swirls a fluid flowing to a downstream side of an axial direction around the axis, and a fuel spraying hole (38), and a sealing member (40) that seals the air spraying hole (39) and is formed of a metal having a melting point lower than a melting point of a metal forming the nozzle main body (16).

Abstract: A journal bearing includes: a carrier ring; a plurality of bearing pads disposed on a radially inner side of a lower half region of the carrier ring, and configured to support a rotor shaft from below; and a guide metal disposed in an upper half region of the carrier ring, in center with respect to an axial direction of the rotor shaft, so as to cover an upper region of an outer peripheral surface of the rotor shaft.

Abstract: A rotating electrical machine of the present invention comprises a rotor; a stator disposed facing the rotor with a predetermined gap, and including a stator core and a stator coil; a high voltage bushing that outputs electricity from the stator coil to the outside; an electric power line including at least a connection ring extending in a circumferential direction, and connecting the high voltage bushing and one side of a coil end which is an axial-direction end of the stator coil to form an electrical path; and a dummy ring including a metal as a main material, and disposed in alignment with the connection ring in the circumferential direction and in a same circumference as the connection ring.

Abstract: A steam turbine includes a rotor shaft, a casing disposed so as to cover the rotor shaft and having a shaft penetration part through which the rotor shaft passes, and a casing support extending axially toward an inner side of the casing through an outer surface of the casing at a periphery of the shaft penetration part and supporting the casing.

Abstract: A combustor includes a nozzle, a burner cylinder surrounding the outer circumference of the nozzle, and an outside flow path cylinder surrounding the outer circumference of a downstream end portion of the burner cylinder. A purge air flow path through which air flows is formed between the inner circumferential side of the outside flow path cylinder and the outer circumferential side of the burner cylinder. A tapered surface is formed in the downstream end portion of the burner cylinder such that the plate thickness of a burner cylinder-forming plate that forms the burner cylinder gradually thins toward the downstream side.

Abstract: A lifting beam for suspending an object to be lifted in a vertical direction has a lower end surface extending in a longitudinal direction of the lifting beam on a vertical lower side in a state where the object is suspended. The lower end surface includes a first lower end portion, a second lower end portion positioned away from the first lower end portion to a first side in the longitudinal direction, and a third lower end portion positioned away from the first lower end portion to a second side in the longitudinal direction, on the opposite side of the first lower end portion from the second lower end portion. The second lower end portion is positioned higher than the first lower end portion, and the third lower end portion is positioned lower than the second lower end portion when the object is suspended from the lifting beam.

Abstract: The present invention comprises: a cylindrical pipe (314) that has a cylindrical shape about an axis (O) extending in the horizontal direction and has a space internally extending in the direction of the axis (O); steam inlets (31, 32) which are provided at the bottom of the cylindrical pipe (314) and through which steam is introduced; a steam outlet (33) that is opened from an end of the cylindrical pipe (314) in the axis (O) direction toward the axis (O) direction for exhausting steam from the cylindrical pipe (314); and a moisture separation element (315) that is provided in the cylindrical pipe (314) between the steam inlets (31, 32) and the steam outlet (33) and has a plurality of vanes for separating moisture from steam by passing the steam through the vanes.