In on or relating to rotating machines
First Claim
1. An apparatus comprising:
- a rotary component having a rotational axis;
a rotor shaft arranged along said rotational axis of said rotary component;
a housing surrounding said rotor shaft;
a first memory device disposed on said rotary component that stores data relating to past use of the rotary component, wherein the data is derived by detecting a rotational speed and a temperature of said rotary component, wherein the data includes values of the rotational speed of said rotary component and eithervalues of a temperature of at least one part of said rotary component, orvalues of an ambient temperature of said rotary component; and
an RF transponder for reading-out the data stored in said first memory device.
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.
11 Citations
20 Claims
-
1. An apparatus comprising:
-
a rotary component having a rotational axis; a rotor shaft arranged along said rotational axis of said rotary component; a housing surrounding said rotor shaft; a first memory device disposed on said rotary component that stores data relating to past use of the rotary component, wherein the data is derived by detecting a rotational speed and a temperature of said rotary component, wherein the data includes values of the rotational speed of said rotary component and either values of a temperature of at least one part of said rotary component, or values of an ambient temperature of said rotary component; and an RF transponder for reading-out the data stored in said first memory device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A rotating machine comprising:
-
a rotary component having a rotor shaft arranged along a rotational axis thereof; a housing that surrounds said rotor shaft; a first memory device disposed on said rotary component that stores data relating to past use of said rotary component, where the data is derived by detecting a rotational speed and a temperature of said rotary component, wherein the data includes values of the rotational speed of said rotary component and either values of a temperature of one or more parts of said rotary component, or values of an ambient temperature of said rotary component; and a speed detector, a temperature detector and an evaluation device arranged on said housing, said evaluation device including a second memory device and a transmission device, the evaluation device being connected to said speed detector and to said temperature detector and arranged to; sample values of the rotational speed and the temperature, derive the data relating to past use of said rotary component from the sampled values of the rotational speed and the temperature, store the derived data in said second memory device, and transmit some or all of the stored data in said second memory device to said rotary component, at predetermined points in time by way of said transmission device, wherein said rotary component comprises said first memory device, said rotary component is arranged to receive at least a portion of the data and to store the data in said first memory device by way of a reception device.
-
-
12. A rotating machine comprising:
-
a rotary component having a rotor shaft arranged along a rotational axis thereof; a housing that surrounds said rotor shaft; a first memory device disposed on said rotary component that stores data relating to past use of said rotary component, wherein the data is derived by detecting a rotational speed and a temperature of said rotary component, wherein the data includes values of the rotational speed of said rotary component and either values of a temperature of one or more parts of said rotary component, or values of an ambient temperature of said rotary component; and a speed detector, a temperature detector and an evaluation device arranged on said housing, said evaluation device including a second memory device and a transmission device, said evaluation device being connected to said speed detector and the temperature detector and arranged to; sample a speed and a temperature, derive values for cumulative fatigue and creep damage suffered by said rotary component from the sampled values of the speed and the temperature and to store the derived values in said second memory device, derive from the cumulative fatigue and creep damage a value of an expired operational life of said rotary component and store the value of the expired operational life in said second memory device, derive the value of a remaining operational life of said rotary component and store value of the remaining operational life in said second memory device, and transmit at least a portion of data stored in the second memory device to said rotary component at predetermined points in time by way of said transmission device, wherein said rotary component is arranged to receive some or all of the data by way of said reception device and to store the data in said first memory device. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification