全环回流燃烧室等离子体点火试验研究

摘要

Taking an annular reverse-flow combustor as the target,the ground ignition test was conducted by plasma igniter and the comparisons were made between the plasma ignition and the conventional electric spark ignition.According to the results,it is suggested that the use of plasma igniter for combustor ignition can broaden the lean ignition limits of combustor,and be able to effectively reduce the period of ignition de-lay.The results also indicate that crossfire generated from ignition of combustor has nothing to do with char-acteristics of igniter and with the adoption of the combustor with pure pneumatic atomizing nozzle,as the in-let Mach number goes up within the range from 0.09 to 0.13,increasing airflow velocity facilitates combus-tor ignition.%以全环回流燃烧室为研究对象,采用等离子体点火器进行地面点火试验研究,并与采用常规电火花点火器进行地面点火试验的结果进行了对比.研究结果表明,采用等离子体点火器进行燃烧室点火可使燃烧室具有更宽的贫油点火边界,且能有效减小点火延迟时间;燃烧室着火后的联焰与点火器的特性无关,采用纯气动雾化喷嘴的燃烧室,在进口空气马赫数0.09到0.13范围内,增加进气流速有助于燃烧室点火.