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Europäisches Patentamt

Achsvibrationsüberwachung zur Erfassung von Wellenfehlausrichtungen in Turbomaschinenzügen | Surveillance des vibrations axiales pour détecter les désalignements d'arbre dans les trains de turbomachine | Axial vibration monitoring for detecting shaft misalignments in turbomachinery trains

Patentnummer:EP2381219B1
IPC Hauptklasse:G01B002124
Anmelder:
Erfinder:
Anmeldung:20.04.11
Offenlegung:23.04.10
Patenterteilung:07.10.20

Abstract / Hauptanspruch
A system for determining a shaft misalignment in a turbomachinery train (10) having a plurality of components (12, 14, 16) with serially coupled rotating shafts (24, 26, 28). A disclosed system includes a sensor (30A, 30B, and 30C) affixed to a component (12, 14, 16) of the turbomachinery train (10) proximate a rotating shaft (24, 26, 28), wherein the sensor (30A, 30B, and 30C) collects vibration data (50) along an axial direction of the rotating shaft (24, 26, 28). Also provided is a frequency analyzer (52) for generating frequency domain data from the vibration data and an analysis system (54) for analyzing a frequency component (12, 14, 16) of the frequency domain data at one times a rotational frequency of the rotating shaft (24, 26, 28) to identify a misalignment between the rotating shaft (24, 26, 28) and an adjacently coupled rotating shaft (24, 26, 28).



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