Method of detecting shaft break
US9506401B2 · kind B2 · utility
7Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2012 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Aug 14, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/335
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting shaft break in a gas turbine engine having a shaft system. The shaft system including a shaft that couples a compressor and a turbine. First construct a frequency model of the shaft system. Then determine a notch frequency and a first torsional frequency for the shaft system from the model. Then in real time measure a rotational speed of the shaft; detect the presence or absence of a feature at least one of the notch frequency and the first torsional frequency in the measured speed; and generate a shaft break signal in response to the absence of at least one of the features.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.