头部旋涡蒸发管式直径6cm环形燃烧室设计和试验

为提高微型燃烧室性能,提出头部旋涡蒸发管式微型环形燃烧室设计方案.在常温常压下开展了燃烧室冷态和热态性能试验,得到了燃烧室的阻力特性、贫油熄火特性和燃烧效率特性.结果表明:微型燃烧室未进入模化状态;头部旋涡结构对火焰的稳定性能相比直流式环形燃烧室有较大改善,负载参数达到较高水平;燃烧效率达到0.8,燃油驻留时间短是导致燃烧效率偏低的主要因素.头部旋涡结构用于微型燃烧室中显著提高了燃烧室的贫油熄火特性. 

Design and experimental research on 6 cm-diameters head-swirl micro-combustor

The concept of new form of combustor named as head-swirl micro-combustor was studied to improve the performance of the micro-combustor.The experiment on the ambient temperature and pressure was carried out,the resistance characteristic shows that the combustor couldn't get into modeling state.The characteristics of the limit blow-out show that,the head swirl takes great advantage in keeping the fire stabilization,and the loading parameter is more satisfactory than that without the head swirl,the combustion efficiency is 0.8 at most,the major reason to the low efficiency is attributed to the short residual time for gas to stay in the combustor.The structure of head-swirl is successfully used in the micro-combustor design.