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. 05, 2007
Filed:
Apr. 12, 2006
Eric Jean Aubriat, Belfort, FR;
Ludovic Bregy, Belfort, FR;
Andrew John Holmes, Baden, CH;
Georg Stephan Klein, Wettingen, CH;
Eric Veith, Offemont, FR;
Michel Claude Verrier, Essert, FR;
Eric Jean Aubriat, Belfort, FR;
Ludovic Bregy, Belfort, FR;
Andrew John Holmes, Baden, CH;
Georg Stephan Klein, Wettingen, CH;
Eric Veith, Offemont, FR;
Michel Claude Verrier, Essert, FR;
Alstom Technology Ltd., Baden, CH;
Abstract
In a method for testing the thermally induced unbalance of a rotating machine part, in particular the rotor of a turbogenerator, the rotating machine part or the rotor balanced at normal temperature is brought in the demounted state first to nominal rotational speed and held at this, while its temperature is varied and, at the same time, the transient variations in oscillations of the rotating machine part or rotor which are caused are measured. During the test, the rotating machine part or the rotor is surrounded at least partially by a closed heating cell, a cooling medium flows around and/or flows through the rotating machine part or the rotor in the heating cell, and the heating of the rotating machine part or of the rotor takes place essentially due to the flow-dynamic losses arising from the interaction of the rotating machine part or of the rotor with the circulating cooling medium.