火焰筒压力损失对贫油熄火特性和燃烧效率的影响

薛鑫; 林宇震; 张弛; 许全宏; 杜江毅

火焰筒压力损失对贫油熄火特性和燃烧效率的影响

北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室,北京 100191

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出版历程
- 收稿日期: 2011-12-17
- 刊出日期: 2012-12-28

Effects of liner pressure loss on combustor lean blow-out and combustion efficienly performances

National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 以3.0%火焰筒压力损失火焰筒作为基准,分别设计了2.5%和2.0%火焰筒压力损失的火焰筒,通过试验研究火焰筒压力损失对贫油熄火性能及燃烧效率的影响.在模拟慢车状态下,低压力损失方案均比基准方案的贫油熄火油气比低,2.5%方案的贫油熄火油气比最低;在模拟高温高压状态,3种方案火焰筒燃烧效率对火焰筒压力损失不敏感.综合比较地面起动点火试验结果,在该基准上将火焰筒压力损失降低至2.5%不会对燃烧室综合燃烧性能造成不利影响.
- 燃气轮机燃烧室 /
- 燃烧室设计 /
- 火焰筒压力损失 /
- 贫油熄火特性 /
- 燃烧效率
Abstract: Based on a liner with 3.0% pressure loss liner, two low pressure loss liners (2.5% and 2.0%) were designed.The light lean ignition experiments were conducted to study the effect of liner pressure loss on the combustor lean blow-out and combustion efficiency.Under the idle conditions, the lean blow-out fuel air ratios of low pressure loss liner were lower than that of the baseline liner, and 2.5% pressure loss liner had the lowest.Under the high pressure and high temperature connditions, the low pressure loss had no effect on the combustion efficiency.Compared with the results of ignition, it was acceptable to reduce the liner pressure to 2.5% without negative effect on the combustion characteristic of combustor.
- gas turbine combustor /
- combustor design /
- liner pressure loss /
- lean blow-out performance /
- combustion efficiency

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参考文献(13)

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