摘要
燃烧气脉冲发生器应用于电厂锅炉除灰。其工作原理是预混可燃气体在右端部分开口在内部有障碍物的容器中快速燃烧,以形成一定的压力脉冲,并产生作用于积灰表面的射流和冲击波。火焰在湍流扰动装置的作用下不断加速,容器中的压力不断上升。火焰传播愈快,压力波形愈陡,压力锋值愈高。针对这些现象,该文进行了实验和理论研究。主要研究了乙炔、水煤气、液化石油气和甲烷4种燃料,在不同燃料浓度、不同阻塞比时对火焰传播和压力上升的影响。计算和实验结果对实际应用有指导作用。
Gas-pulse generators are used for ash removing in utility boilers. The operating principle involves pressure pulse being produced when a premixtured combstible gas burns quickly in a tube with inside obstructions and a partially open end. Propagation of flame in the combustion chamber with four kinds of fuel (acetylene, water gas, liquefied petroleum gas and methane ) were measured in the experimental apparatus. Flame speeds were compared at various fuel/air equivalence ratios. Effects of blockage ratios on flame velocity and peak pressure were investigated and calculated. The experimental and calculated results are useful in providing some guidance for industrial application.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第7期140-144,共5页
Proceedings of the CSEE
基金
攀登计划项目(85-39-16)。
