Method for operating a machine plant having a shaft train

US10598542B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ingo Balkowski · Kerken, DE
• Ulrich Ehehalt · Essen, DE
• Oliver Hensel · Mülheim an der Ruhr, DE
• Dirk Huckriede · Korschenbroich, DE
• Thomas Küpper · Kaarst, DE
• Bernd Lacombe · Raesfeld, DE
• Umit Mermertas · Mülheim an der Ruhr, DE
• Uwe Pfeifer · Berlin, DE

Key dates

• Filing date: Aug 27, 2015
• Grant date: Mar 24, 2020
• Expiry date: Nov 12, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01H1/16
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for operating a machine plant having a shaft train, including: a) determining the harmonic frequency of a torsional vibration mode of the shaft train and determining mechanical stresses arising during a vibration period of the torsional vibration mode; b) determining a correlation for each torsional vibration mode between a first stress amplitude, at a position of the shaft train that carries risk of stress damage, and a second stress amplitude, at a measurement location of the shaft train, using stresses determined for the respective torsional vibration mode; c) establishing a maximum first stress amplitude for the position; d) establishing a maximum second stress amplitude, corresponding to the maximum first stress amplitude, for the measurement location; e) measuring the stress of the shaft train while rotating; f) determining a stress amplitude at each harmonic frequency; g) emitting a signal when the stress amplitude reaches the maximum second stress amplitude.