In on or Relating to Rotating Machines
3 Assignments
0 Petitions
Accused Products
Abstract
A rotating machine, has a rotary component, which includes a memory device for storing data relating to the past use of the component. The data are associated with rotational speed and ambient temperature, which are detected by detectors either on or off the rotary component. The stored data may be the raw temperature and speed data as sampled over time, which are then used to derive values of low-cycle fatigue and creep damage. These fatigue and creep values are, in turn, correlated with the load profiles of the component to arrive at a value of elapsed lifespan for the component. Alternatively, the stored data may be the fatigue and creep values and/or, preferably, values of elapsed and remaining lifespan of the component. In a second embodiment the detectors are located on the machine casing along with an evaluation unit.
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Citations
57 Claims
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1-37. -37. (canceled)
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38. A rotary component, comprising:
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a rotor shaft arranged along the rotational axis of the component; a housing that surrounds the rotor shaft; a first memory device that stores data relating to past use of the component, where the data is derived by detecting the rotational speed and temperature of the component, wherein the data includes values of a rotational speed of the component and either values of a temperature of one or more parts of the component, or values of an ambient temperature of the component; and an RF transponder for reading-out the data stored in the first memory device. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A rotating machine comprising:
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a rotor shaft arranged along the rotational axis of the component; a housing that surrounds the rotor shaft; a first memory device that stores data relating to past use of the component, where the data is derived by detecting the rotational speed and temperature of the component, wherein the data includes values of a rotational speed of the component and either values of a temperature of one or more parts of the component, or values of an ambient temperature of the component; and a speed detector, a temperature detector and an evaluation device arranged on the housing, the evaluation device including a second memory device and a transmission device, the evaluation device being connected to the speed detector and the temperature detector and arranged to; sample speed and temperature, derive the data relating to past use of the rotary component from the sampled values of speed and temperature, store the data in the second memory device, and transmit, at predetermined points in time by way of the transmission device, some or all of the data stored in the second memory device to the rotary component, wherein the rotary component being arranged to receive, by way of the reception device, at least a portion of said data and to store it in the first memory device.
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49. The rotating machine comprising:
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a rotor shaft arranged along the rotational axis of the component; a housing that surrounds the rotor shaft; a first memory device that stores data relating to past use of the component, where the data is derived by detecting the rotational speed and temperature of the component, wherein the data includes values of a rotational speed of the component and either values of a temperature of one or more parts of the component, or values of an ambient temperature of the component; and a speed detector, a temperature detector and an evaluation device arranged on the housing, the evaluation device including a second memory device and a transmission device, the evaluation device being connected to the speed detector and the temperature detector and arranged to; sample speed and temperature, derive values for cumulative fatigue and creep damage suffered by the rotary component from the sampled values of speed and temperature and store the derived values in the second memory device, derive from the cumulative fatigue and creep damage amount a value of an expired operation life of the rotary component and store this value in the second memory device, derive from the value of an expired operational life and an estimated maximum life, a value of a remaining operational life of the rotary component and store this value in the second memory device, and transmit, at predetermined points in time by way of the transmission device, at least a portion of data stored in the second memory device to the rotary component, wherein the rotary component is arranged to receive, by way of the reception device, some or all of the data and to store it in the first memory device. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56)
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57. The rotating machine as claimed in 56, wherein an alarm is activated for maintenance purposes, when it is determined that the transponder is not the correct transponder or that the transponder is not working.
Specification