主燃级参数对中心分级燃烧室NOx排放的影响规律研究

Influence of Main Combustion Stage Parameters on NOx Emissions of Central Staged Combustor

王季成 ¹林宇震 ²韩猛 ²王瑜琢 ²韩啸 ²王建臣²

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作者信息

1. 北京航空航天大学国家卓越工程师学院,北京 102206
2. 北京航空航天大学航空发动机研究院,北京 102206;北京航空航天大学航空发动机气动热力国家级重点实验室,北京 102206
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摘要

针对中心分级燃烧室,通过高温高压实验研究了主燃级旋流数、出口轴向速度、套筒张角等主燃级结构参数和压力、温度、油气比、分级比等气动参数对NOx排放的影响规律.结果表明,主燃级旋流数 0.7 头部方案的NOx排放最少;随着主燃级出口轴向速度的增大,NOx的排放减少;在 20°～30°范围内,随着主燃级套筒张角变大,NOx的排放增多.主、预燃级同时工作时,主燃级旋流数 0.9 头部方案的主燃级 NOx的排放最少,主燃级出口轴向速度70 m/s头部方案的NOx排放最少;在20°～30°范围内,随着主燃级套筒张角变大,NOx的排放减少.

Abstract

For the central graded combustor,the influence of structural parameters such as swirl number,axial velocity at the outlet,and sleeve angle of the main combustion stage,and aerodynamic parameters such as pres-sure,temperature,oil gas ratio,and classification ratio on NOx emission are studied through high temperature and high pressure experiments.The results show that when the pre combustion stage works alone,the NOx emis-sions of the swirl number of 0.7 in the main combustion stage are the lowest;as the axial velocity at the outlet of the main combustion stage increases,NOx emissions decrease;within the range of 20°—30°,as the angle of the main combustion stage sleeve increases,NOx emissions increase.When the main and pre combustion stages work simultaneously,the main combustion stage with the swirl number of 0.9 has the lowest NOx emissions,while the main combustion stage with an axial velocity of 70 m/s has the lowest NOx emissions;within the range of 20°—30°,as the angle of the main combustion stage sleeve increases,NOx emissions decrease.

关键词

中心分级燃烧室/主燃级参数/高温高压实验/NOx排放

Key words

central graded combustor/main combustion stage parameters/high temperature and high pressure experiment/NOx emission

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出版年

2025

燃烧科学与技术

天津大学

燃烧科学与技术

CSCD北大核心

影响因子：0.617

ISSN：1006-8740

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