文献类型： 会议论文

第一作者： Mr S A Geisse

作者： Mr S A Geisse ¹ ; Mr I R I McKenzie ² ; Mr K D Brundish ³ ;

作者机构： 1.QinetiQ Ltd Building A7, Room 2008 Cody Technology Park Ively Road, Farnborough GU14 0LX Hampshire United Kingdom

2.Tel: +44 1252 397647 sageiss

3.sageisse@qinetiq.com

会议名称： Power-Gen Asia 2006; 20060905-07; Hong Kong (CN)

主办单位：

页码： 1-14

摘要： Modern industrial gas turbines employing low Nox combustion technology are often subject to unwanted low frequency combustion oscillation, frequently referred to as humming. Humming, which usually occurs at certain resonance frequency ‘islands’, can influence the operation of the gas turbine to the extent that full load operation may be impossible without increasing pilot gas flow, incumbent with the penalty of increased Nox levels. During recent years, gas turbine manufacturers h have invested heavily to reduce or avoid ave humming through appropriate burner and combustion chamber redesign. However, due to continuous operation and in combination with contaminants in the natural gas fuel, burner assemblies become partially blocked with accretions of hydrocarbons and other residues. This effect is most apparent in the region of the small fuel injection ports on the burners and impacts directly, but randomly, on the burner fuel flow capacity resulting in increased burnerto burnertoburner flow variability. This increased variability tends to have an burner adverse effect on the engine operating range over which humming occurs and on humming intensity. Burner management, incorporating flow testing, cleaning and, finally, flow trimming to balance the burner set, can reap results in reducing humming, avoiding excessive NOX production, improved turbine entry temperature profile and improving engine handling. This paper uses an example of an actual gas turbine that underwent a burner management programme, the effect of which has improved engine handling over its full load range range..

分类号： [ "F416.61" , "F416.61"]