Shaft shear detection through shaft oscillation
US10228305B2 · kind B2 · utility
7Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2017 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Sep 20, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/81
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is described a shaft shear event detection method. The method comprises obtaining a demodulated waveform of a shaft oscillation wave superimposed on a shaft rotational speed signal, comparing the amplitude to an amplitude threshold, detecting oscillation when the amplitude threshold is exceeded for a plurality of samples, and detecting a shaft shear when oscillation continues for a predetermined time limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.