公开(公告)号：EP1583945A1

公开(公告)日：2005-10-12

申请号：EP03783608.7

申请日：2003-11-18

申请人： WOODWARD GOVERNOR COMPANY

发明人： BENSON, Kelly, J. ,  THORNTON, Jimmy, D. ,  RICHARDS, George, A. ,  STRAUB, Douglas, L.

IPC分类号： G01L23/22

CPC分类号： F23N5/242 ,  F05B2260/80 ,  F23N5/123 ,  F23N2041/20 ,  F23R2900/00013

摘要： An apparatus and method to sense the onset of combustion stability is presented. An electrode is positioned in a turbine combustion chamber such that the electrode is exposed to gases in the combustion chamber. A control module applies a voltage potential to the electrode and detects a combustion ionization signal and determines if there is an oscillation in the combustion ionization signal indicative of the occurrence of combustion stability or the onset of combustion instability. A second electrode held in a coplanar but spaced apart manner by an insulating member from the electrode provides a combustion ionization signal to the control module when the first electrode fails. The control module broadcasts a notice if the parameters indicate the combustion process is at the onset of combustion instability or broadcasts an alarm signal if the parameters indicate the combustion process is unstable.