Turbine blade monitoring
US9995167B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 2015 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Jul 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/358
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A blade monitoring system and method for a turbine assembly comprising rotating blades (14), the system comprising at least one sensor (10, 12) for transmitting a signal towards said rotating blades and detecting a time-varying return signal therefrom, and one or more processors (20) configured to calculate the time derivative of said return signal, generate a phase variation signal for said time derivative, determine minima points within said phase variation signal and measure said signal at said minima points so as to identify data representative of respective minimum path lengths, each said minimum path length corresponding to the returned signal as each respective blade passes said sensor, and generate, using said minimum path lengths, a time series of data representing the returned signal from individual blades as they pass the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.