Abstract: A monitoring device includes a process data acquisition unit configured to acquire process data indicating an operation condition of a machine having a rotating shaft, a shaft vibration value acquisition unit configured to acquire a measurement value of a shaft vibration value of the rotating shaft under the operation condition indicated by the process data, a determination model configured to determine a normal value of the shaft vibration value according to the operation condition created on the basis of the shaft vibration value measured during an operation of the machine and the shaft vibration value calculated on the basis of a predetermined shaft vibration calculation model, and a monitoring unit configured to evaluate the measurement value of the shaft vibration value on the basis of the process data, the measurement value of the shaft vibration value, and the determination model.

Abstract: A cooling device includes a cooler disposed inside a shell, an inlet nozzle that is configured to feed a fluid into the shell, an outlet nozzle that is configured to feed the fluid passing through the cooler so as to flow outward, and a guide member that is configured to change a flowing direction of the fluid. The guide member has a collision surface which spreads in an inclined direction inclined with respect to the flowing direction of the fluid fed into the shell from the inlet nozzle, and which collides with the fluid, and an uneven portion formed in at least a portion of a peripheral edge portion of the collision surface.

Abstract: A shaft vibration monitoring system is equipped with a plurality of sensors, a sensor abnormality determination unit, and a shaft vibration monitoring unit. The plurality of sensors detect vibration of the rotary shaft. The sensor abnormality determination unit is configured to compare the detection signals to be output from the plurality of sensors and determine whether an abnormality occurs in at least one of the plurality of sensors. The shaft vibration monitoring unit is configured to monitor the vibration of the rotary shaft, on the basis of the detection signals to be output from the plurality of sensors and the determination result of the sensor abnormality determination unit.

Abstract: A monitoring device includes a process data acquisition unit configured to acquire process data indicating an operation condition of a machine having a rotating shaft, a shaft vibration value acquisition unit configured to acquire a measurement value of a shaft vibration value of the rotating shaft under the operation condition indicated by the process data, a determination model configured to determine a normal value of the shaft vibration value according to the operation condition created on the basis of the shaft vibration value measured during an operation of the machine and the shaft vibration value calculated on the basis of a predetermined shaft vibration calculation model, and a monitoring unit configured to evaluate the measurement value of the shaft vibration value on the basis of the process data, the measurement value of the shaft vibration value, and the determination model.

Abstract: A blade abnormality detecting device has a vibration acquisition unit that acquires vibration of a steam turbine when a rotation speed of a rotor changes, along with the rotation speed, a frequency analysis unit that performs frequency analysis according to an acquisition result of the vibration acquisition unit, and acquires natural frequency in each rotation speed of a rotor blade row, a contact rotation speed acquisition unit that acquires a contact rotation speed, which serves as a boundary between a state where shrouds of neighboring rotor blades are in contact with each other and a state where the shrouds are spaced apart from each other, according to an analysis result of the frequency analysis unit, and a determination unit that determines whether or not the rotor blade row is abnormal according to the contact rotation speed acquired by the contact rotation speed acquisition unit.

Abstract: An abnormality detection device includes a vibration measurement value acquisition unit configured to acquire a measurement value of vibration of a rotation shaft, which is measured by each of shaft vibration sensors provided to be spaced apart in a diameter direction of the rotation shaft with respect to an outer circumferential surface of the rotation shaft at positions spaced apart in a shaft direction of the rotation shaft, for each rotation angle of the rotation shaft, a vibration vector calculation unit configured to calculate a vibration vector indicating a rotation angle at which a vibration of the rotation shaft is a maximum and a magnitude of the vibration on the basis of the measurement value of the vibration, and an estimation unit configured to estimate an abnormality occurrence position in the shaft direction of the rotation shaft on the basis of a time change in the vibration vector.

Abstract: A cooling device includes a cooler disposed inside a shell, an inlet nozzle that is configured to feed a fluid into the shell, an outlet nozzle that is configured to feed the fluid passing through the cooler so as to flow outward, and a guide member that is configured to change a flowing direction of the fluid. The guide member has a collision surface which spreads in an inclined direction inclined with respect to the flowing direction of the fluid fed into the shell from the inlet nozzle, and which collides with the fluid, and an uneven portion formed in at least a portion of a peripheral edge portion of the collision surface.

Abstract: A rotary machine includes a rotor, a casing, a seal portion, and a high pressure fluid supply portion. The rotor includes a rotary shaft that rotates around an axial line and an impeller that rotates with the rotary shaft to compress a fluid; the casing defines a casing flow path through which the fluid compressed by the impeller flows and covers the rotor from an outer peripheral side; the seal portion includes an opposing surface opposite the outer peripheral surface of the rotor in the gap and seals the fluid that flows through the gap in a direction of the axial line from a high pressure side toward a low pressure side; and the high-pressure fluid supply portion supplies the fluid on the high pressure side flowing through the casing flow path to the gap.

Abstract: Provided is a seal device configured to prevent leakage of a fluid on an outer circumferential surface of a rotary shaft in a direction along an axis of the rotary shaft. The seal device includes an annular main body section disposed in a circumferential direction of the rotary shaft, and a plurality of at least two kinds of holes formed in an inner circumferential surface of the main body section opening and facing to the outer circumferential surface of the rotary shaft, and having different depths.

Abstract: Provided is a seal device configured to prevent leakage of a fluid on an outer circumferential surface of a rotary shaft in a direction along an axis of the rotary shaft. The seal device includes an annular main body section disposed in a circumferential direction of the rotary shaft, and a plurality of at least two kinds of holes formed in an inner circumferential surface of the main body section opening and facing to the outer circumferential surface of the rotary shaft, and having different depths.