Patent · US Expired

Method for determination of the stress on blades of a turbine machine during operation and corresponding device for carrying out said method

US7373823B2 · kind B2 · utility

7Cited by

20References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Thomas Bosselmann · Erlangen, DE
Franz Eiermann · Baunach, DE
Klaus Huber · Effeltrich, DE
Michael Willsch · Jena, DE

Key dates

Filing date	Jan 16, 2004
Grant date	May 20, 2008
Priority date	—
Expiry date	Jun 2, 2024

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2300/611
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The method serves to determine the vibrational state of turbine blades, arranged on a rotor shaft, mounted such as to rotate in a housing and/or of guide vanes. At least one electromagnetic wave is transmitted into a flow channel in the vicinity of the blades, using means for the generation of at least one electromagnetic wave. The electromagnetic waves are at least partly reflected from at least one blade. The reflected part of the at least one electromagnetic wave is received by means for receiving and the vibrational state of the corresponding blade is determined from a signal corresponding to the at least one received electromagnetic wave.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.