REVIEW ARTICLE


Fault Diagnosis for Steam-flow Exciting Vibration of Ultra Supercritical 1000 MW Steam Turbine



Chen Li*, Hu Niansu
School of Power and Mechanical Engineering, Wuhan University/Wuhan, Hubei, 430072, P. R. China


© 2015 Li and Niansu

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Power and Mechanical Engineering, Wuhan University/Wuhan, Hubei, 430072, P. R. China; Tel: 027-68773317; Fax: 027-68773317 E-mail: chenli12530@sina.com


Abstract

With the increase in thermal power capacity, ultra supercritical units have become the mainstream of power industry. At the same time, with the improvement of the steam parameters and the lengthening of shafting, the production of steam flow excited vibration is frequent in the ultra supercritical units, which may seriously affect the reliability of the unit. This paper has taken steam flow excited vibration of a 1000MW turbine as an example in accordance with the experimental and theoretical causes of steam flow excited vibration to solve the problem of steam flow excited vibration by the proposed treatment plan. This can greatly improve the reliability of operation and the units with high load capacity.

Keywords: 1000MW steam turbine, Admission mode, Rotor eccentricity, Seal, Steam-flow exciting vibration.