摘要
为了增强燃烧的稳定性,提出了利用介质阻挡放电等离子体装置来实现值班火焰的思路。通过布置在燃烧器出口扩张段上的等离子体激励器产生等离子体,并在燃烧过程中一直保持等离子体激励器处于工作状态,这样产生的等离子体可以起到类似值班火焰的作用——稳定燃烧、防止熄火。该装置具有结构简单紧凑、功耗低、激励参数可以在线调节且不影响燃烧器结构设计等优点。基于实验研究考察了该装置对旋流扩散燃烧中不稳定抬升火焰的作用效果。火焰结构的观测通过平面激光诱导荧光测试系统来实现。实验中观测到随等离子体激励功率增大,火焰高度逐步降低向喷嘴出口位置靠近,且反应更趋紧凑,这初步验证了该装置可以稳定燃烧、防止熄火,表明通过介质阻挡放电等离子体装置来实现值班火焰的设计思路可行。
The idea of using dielectric barrier discharge plasma device to act as pilot flame was put forward for combustion stability enhancement.The plasma was generated by the plasma actuators placed on the expansion section of the combustor.The plasma actuators were switched on all the time in combustion.The plasma acted as the pilot flame can enhance the combustion stability and prevent the blow off of combustion.The advantages of the plasma pilot flame device included simple structure,low power consumption,on line parameters adjustment and free influence of combustor design.Effects of the plasma actuation on lift flame in the swirl combustor were investigated.In the experiment the flame structure was observed by the planar laser induced fluorescence.With the increase of the power consumption the flame was dragged to the ejector and the reaction was more compact.These demonstrate that the plasma pilot flame device can enhance combustion stability and prevent flame blow off.The idea of using dielectric barrier discharge plasma device to act as the pilot flame is feasible.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2012年第32期89-94,15,共7页
Proceedings of the CSEE
基金
国家自然科学基金(51076150)~~
关键词
等离子体
介质阻挡放电
值班火焰
旋流扩散燃烧
平面激光诱导荧光
plasma
dielectric barrier discharge
pilot flame
swirl diffusion combustion
planar laser induced fluorescence
