The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 2015
Filed:
Sep. 11, 2012
Qin Xu, Bôle, CH;
Jonathan Geisheimer, Neyruz, CH;
Gérald Egger, Villars-sur-Glâne, CH;
Maddalena Violetti, Lausanne, CH;
Anja Skrivervik Favre, Champvent, CH;
Qin Xu, Bôle, CH;
Jonathan Geisheimer, Neyruz, CH;
Gérald Egger, Villars-sur-Glâne, CH;
Maddalena Violetti, Lausanne, CH;
Anja Skrivervik Favre, Champvent, CH;
MEGGITT SA, , CH;
Abstract
A device and a method for monitoring the operational state of rotor blades of a turbine from a position facing the blade tip of a passing rotor blade: A wavesource generates an electromagnetic wave and a wave guide directs the wave towards the blade tip. The waveguide is included in a resonator defining at least one discrete resonance frequency of the wave on the waveguide. An aperture at its front end emits an energy fraction of the wave toward the blade tip. The frequency of the wave is adjusted to the resonance frequency of the resonator at the momentary operation conditions, and a measuring unit compares at least one measurement parameter of the wave directed towards the blade tip with the corresponding measurement parameter of the wave reflected from the blade tip.