Vibration diagnosis method and apparatus for rotary machines
US4453407A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1981 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Apr 17, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M1/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vibration diagnosis method and apparatus for rotary machines adapted for measuring the vibration of rotor shaft of a rotary machine, extracting the vibration component synchronous with the revolution of the rotor shaft from the measured vibration data, comparing the amplitude of the extracted vibration component with the amplitude of the overall vibration, analyzing the causes of the synchronous vibration component when the result of the comparison meets a predetermined reference, judging, in accordance with the result of the analysis, whether the vibration due to mass unbalance is attributable to an abrupt generation of mass unbalance or to a thermal bow of the rotor shaft, and displaying the result of the judgment. The analysis of the vibration component is made in real time or making use of data stored in the past.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.