采用钝体式孔板淬熄的富油-淬熄-贫油驻涡燃烧室排放性能试验研究

发布时间：2018-03-18 03:12

本文选题：航空推进　切入点：燃烧　出处：《推进技术》2016年04期 　论文类型：期刊论文

【摘要】：设计研制了采用钝体式孔板淬熄装置进行淬熄作用的富油-淬熄-贫油(Rich-quenchlean,RQL)驻涡燃烧室(Trapped-vortex Combustor,TVC)模型和试验系统,实现了富油燃烧-快速淬熄-贫油燃烧的分级燃烧。在常压状态下采用RP3航空煤油作为燃料开展了排放试验研究,分析并总结了当量比(包含总当量比和富油区当量比)、进口速度(马赫数)和进口温度等参数对采用钝体式孔板淬熄的RQL-TVC排放性能的影响。研究结果表明:不同进口温度或进口马赫数条件下,随着当量比的增大,氮氧化物(NOx)的排放指数(Emission Index,EI)呈现出先急剧升高,然后急剧下降并趋于平缓的趋势,在富油燃烧区当量比为1.1左右达到峰值,一氧化碳(CO)的EI值先保持平稳而后急剧下降,未燃碳氢化合物(UHC)的EI值呈现连续降低的趋势,燃烧效率持续增大,燃烧效率均高于95%,最大值达99%以上;进口温度较高或进口马赫数较小时,UHC和CO的EI值均较小,燃烧效率较高,而NOx的EI值较大,反之亦然。
[Abstract]:A Trapped-vortex-Combustor-TVC model and test system for oil-rich quench-lean Rich-quenchleaner RQL combustion chamber with blunt hole plate quenching device was designed and developed. The staged combustion of oil-rich combustion, rapid quenching and lean oil combustion has been realized. The emission test of RP3 aviation kerosene as fuel has been carried out under normal pressure. The effects of equivalent ratio (including total equivalent ratio and oil-rich region equivalent ratio), inlet velocity (Mach number) and inlet temperature on the emission performance of RQL-TVC quenched by blunt hole plate are analyzed and summarized. The results show that: 1. Under import temperature or Mach number, With the increase of the equivalent ratio, the emission index of no _ x (permission Index) increases sharply, then decreases sharply and tends to be gentle, and reaches its peak value when the equivalent ratio is about 1.1 in the oil-rich combustion zone. The ei value of carbon monoxide (CO) kept steady at first and then decreased sharply. The ei value of unburned hydrocarbon (UHCC) decreased continuously, and the combustion efficiency increased continuously, and the combustion efficiency was higher than 95%, the maximum value was over 99%. The ei values of UHC and CO are both smaller and the combustion efficiency is higher than that of NOx and vice versa with higher inlet temperature or lower import Mach number.
【作者单位】：南京航空航天大学能源与动力学院江苏省航空动力系统重点实验室;
【基金】：工业与信息化部民用航空发动机燃烧室基础预研项目江苏省普通高校研究生科研创新计划资助项目(CXLX12_0172)
【分类号】：V231.2

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