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:
Aug. 06, 2013
Filed:
Nov. 28, 2008
Xinyan Liang, Beijing, CN;
Shaohua Jiao, Beijing, CN;
Yuansheng LI, Beijing, CN;
Tao Zhang, Beijing, CN;
Quan Liu, Beijing, CN;
Xinyan Liang, Beijing, CN;
Shaohua Jiao, Beijing, CN;
Yuansheng Li, Beijing, CN;
Tao Zhang, Beijing, CN;
Quan Liu, Beijing, CN;
Beijing Sifang Automation Co., Ltd., Beijing, CH;
Abstract
A method for measuring a shafting mechanical fatigue of a turbine generator set, which involves determining a lumped mass model of a turbine generator set and its parameters; calculating a model frequency and a mode shape of the turbine generator set; acquiring an angular velocity change at a machine end; calculating a torque at a calculating section of shafting based on the model frequency, a mode shape curve and an equivalent rigidity of the lumped mass model, so as to obtain a torque-time history curve at the calculating section of the shafting; calculating a fatigue damage accumulative value for a dangerous section of a set shafting under a certain malfunction or disturbance, that is, the shafting mechanical fatigue of the turbine generator set.