公开(公告)号：US20210140925A1

公开(公告)日：2021-05-13

申请号：US16611893

申请日：2018-04-12

Applicant: Siemens Aktiengesellschaft

Inventor： Ralf Bell ,  Uwe Pfeifer ,  Ingo Balkowski

IPC: G01N29/04 ,  G01N29/12 ,  G01N29/44 ,  F01D21/00 ,  G06N5/04

Abstract: A fast and simple classification of the state of the component is ensured by carrying out the resonance test in an automated manner on blade assemblies, in which frequency images of new and used components are compared with each other.

公开(公告)号：US10598542B2

公开(公告)日：2020-03-24

申请号：US15505328

申请日：2015-08-27

Applicant: Siemens Aktiengesellschaft

Inventor： Ingo Balkowski ,  Ulrich Ehehalt ,  Oliver Hensel ,  Dirk Huckriede ,  Thomas Küpper ,  Bernd Lacombe ,  Ümit Mermertas ,  Uwe Pfeifer

IPC: G01H1/14 ,  G01H1/10 ,  G01H1/16 ,  F01D5/02 ,  F01D17/04 ,  F01D21/00 ,  F01D5/26 ,  F01D5/06 ,  F01D5/04

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.

公开(公告)号：US20170254696A1

公开(公告)日：2017-09-07

申请号：US15505328

申请日：2015-08-27

Applicant: Siemens Aktiengesellschaft

Inventor： Ingo Balkowski ,  Ulrich Ehehalt ,  Oliver Hensel ,  Dirk Huckriede ,  Thomas Küpper ,  Bernd Lacombe ,  Ümit Mermertas ,  Uwe Pfeifer

IPC: G01H1/14 ,  F01D5/02 ,  G01H1/16 ,  F01D21/00 ,  F01D17/04 ,  G01H1/10

CPC classification number: G01H1/14 ,  F01D5/027 ,  F01D5/04 ,  F01D5/06 ,  F01D5/26 ,  F01D17/04 ,  F01D21/003 ,  G01H1/10 ,  G01H1/16

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.