摘要
针对燃气轮机燃烧室在燃烧不稳定时出现的热声振荡现象,在诸多运行条件下对新研发的干式低NO_(x)(dry low NO_(x),DLN)燃烧室的动态压力进行了现场测试,分析了起动过程、增减负荷过程、蒸汽回注过程对燃烧稳定性的影响。结果表明:在燃气轮机点火后的升速过程中,出现了短暂的热声振荡现象;增加燃气轮机的负荷会使热声振荡增强,而且还会出现不同频谱上的能量迁移,需要调整值班比对其加以抑制;蒸汽回注对燃烧室的稳定性没有明显的影响。
In view of the thermoacoustic oscillation phenomenon in the unstable combustion of gas turbine combustor,the dynamic pressure of the newly developed dry low NO_(x)(DLN)combustor under many operating conditions was tested,and the influence of starting process,load increasing and decreasing process,and steam reinjection process on the combustion stability was analyzed.The results show that there is a transient thermoacoustic oscillation in the process of rising speed after ignition.The increase of gas turbine load may lead to the enhancement of thermoacoustic oscillation and the energy transfer among different spectra,which needs to be suppressed by adjusting the duty ratio.The steam reinjection has no obvious effect on the combustor stability.
作者
宋权斌
陈泽
彭雪丽
雷振宇
房爱兵
SONG Quan-bin;CHEN Ze;PENG Xue-li;LEI Zhen-yu;FANG Ai-bing(School of Energy and Power Engineering,Changsha University of Science&Technology,Changsha 410114,China;Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China)
出处
《长沙理工大学学报（自然科学版）》
CAS
2021年第2期83-89,共7页
Journal of Changsha University of Science and Technology:Natural Science
基金
湖南省教育厅科学研究项目(18C0201)。
关键词
燃气轮机
热声振荡
DLN燃烧室
蒸汽回注
燃烧稳定性
gas turbine
thermoacoustic oscillation
DLN combustor
steam reinjection
combustion stability
