Plural sensor apparatus for monitoring turbine blading with undesired component elimination
US4518917A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1982 |
| Grant date | May 21, 1985 |
| Priority date | — |
| Expiry date | Aug 31, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D21/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A plurality of proximity sensors are disposed in a turbine flow guide to measure flow guide-to-turbine blade tip distance at various points around the flow guide. The sensor signals are detected and the peak-to-peak voltage of the detected signals provides an indication of the desired distance measurement. The signals are also monitored and if ambient operating conditions causes the signals to exceed predetermined positive or negative thresholds, corrective signals are generated so as to bring the detected signal back into an acceptable range. A proximity sensor is also provided to measure axial movement of the rotor to which the blades are attached so that the other sensor signals can be modified as a function of the measured axial position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.