In on or relating to rotating machines
US7949479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2006 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Oct 21, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/821
- WIPO fieldControl
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.