论文部分内容阅读
为了更加深入地掌握小尺度三级旋流燃烧组织方法,开展了单头部与多头部模型燃烧室在不同进口速度和油气比参数下的燃烧性能试验研究。研究结果表明:同单头部燃烧室燃烧性能相比,三头部燃烧室的各项主要燃烧性能均得到不同程度的恶化,相同工况下三头部燃烧室的点火油气比和贫油熄火油气比较单头部燃烧室分别提高了约25%,100%,分析认为三头部燃烧室性能的恶化主要是由于套筒角度不合理,导致相邻两个主燃区气流之间存在相互干扰,而该干扰在低油气比时尤为明显;对于多头部燃烧室试验件而言,套筒角度过大或过小均会导致燃烧性能恶化,合理的套筒角度对多头部甚至全环燃烧室至关重要,得到的最佳套筒角度为37.5°。
In order to further understand the microstructure of small-scale three-stage swirling combustion, the combustion performance of single-head and multi-head combustion chambers under different inlet velocities and different gas-oil ratio parameters was studied. The results show that all the main combustion performances of the three-head combustion chamber are deteriorated to some extent compared with those of the single-head combustion chamber. Under the same operating conditions, the ignition ratio of the three heads and the lean-out Compared with single-head combustor, the oil-gas ratio increased by about 25% and 100% respectively. It is considered that the deterioration of the performance of the three-head combustor is mainly due to the unreasonable angle of the sleeve and the mutual interference between the two main combustor gas flows , And the interference is especially obvious when the ratio of oil to gas is low. For the multi-head combustion chamber test, the angle of the sleeve is too large or too small will lead to the deterioration of combustion performance, reasonable angle of the sleeve on the head and even the whole ring The combustion chamber is crucial and the best angle of the sleeve obtained is 37.5 °.