航空学报 > 1994, Vol. 15 Issue (6): 665-671

喷嘴特性对燃烧室内烟粒浓度和火焰辐射的影响

刘刚, 李黎, 吴寿生   

  1. 北京航空航天大学动力系,北京,100083
  • 收稿日期:1992-11-14 修回日期:1993-07-16 出版日期:1994-06-25 发布日期:1994-06-25

INVESTIGATION OF ATOMIZERS EFFECT ON SOOT CONCENTRATION AND FLAME RADIATION IN A SMALL MODEL GAS TURBINE COMBUSTOR

Liu Gang, Li Li, Wu Shousheng   

  1. Department of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing, 100083
  • Received:1992-11-14 Revised:1993-07-16 Online:1994-06-25 Published:1994-06-25

摘要: 在一个小模型燃气轮机燃烧室上,试验研究了在燃烧室工作压力为0.5MPa情况下,简单离心式喷嘴与空气雾化喷嘴、空气雾化喷嘴的不同喷雾锥角等对燃烧室燃烧状况、烟粒浓度和火焰辐射的影响。实验表明:在正常燃烧情况下,简单离心式喷嘴产生较高的烟粒浓度和火焰辐射,并且随着头部油气比增加变得更加明显;而喷雾锥角与头部的良好匹配,则是保证燃烧室正常工作,并使烟粒浓度、火焰辐射降低的重要因素。

关键词: 燃气轮机-燃烧室, 雾化器, 烟-浓度, 火焰-辐射

Abstract: The comparison of combustor condition soot concentration and flame radiation in a small model gas turbine combustor were made for a swirl atomizer and an air-blast atomizer with different atomizer characteristics,and different spray angles. The soot concentration in the com-bustor was obtained with the technique of spectral radiance measurement.Experimental results showed that,under the normal combustion condition,the swirl atomizer could produce higher soot concentration and flame radiation in the combustor primary zone, and the trend was much more obvious as the fuel-air ratio in the primary zone was increased.A well-matched spray angle of the atomizer with the primary zone was one of the most important factors for normal combus-tion, and was also one of the most important factors for reducing soot concentration and flame ra-diation in the combustor.

Key words: turbine engines-combustion chambers, atomizers, soot-concentration (composition)flames-radiation

中图分类号: