System and method for determining health indicators for impellers
US8620622B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2009 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Oct 27, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B23/0229
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system includes a plurality of sensors configured to measure one or more characteristics of an impeller. The system also includes an impeller condition indicator device, which includes a plurality of sensor interfaces configured to receive input signals associated with at least one stage of the impeller from the sensors. The impeller condition indicator device also includes a processor configured to identify a fault in the impeller using the input signals and an output interface configured to provide an indicator identifying the fault. The processor is configured to identify the fault by determining a family of frequencies related to at least one failure mode of the impeller, decomposing the input signals using the family of frequencies, reconstructing a impeller signal using the decomposed input signals, and comparing the reconstructed impeller signal to a baseline signal. The family of frequencies includes a vane pass frequency and its harmonics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.