论文部分内容阅读
为研究地面用燃气轮机以0号柴油为燃料时的燃烧特性,对装有值班级直射式喷嘴和5种旋流器组合方案的双环预混旋流(Twins Annular Premixing Swirler,TAPS)燃烧室的特性进行了实验测试,获得了5种旋流器组合方式下燃烧室的流阻性能和燃烧性能。研究结果表明:双环预混旋流燃烧室的总压恢复系数都在0.97以上,高于经典的单环腔燃烧室;值班级采用直射式喷嘴会导致燃烧室的点火和CO排放性能下降,点火油气比在0.04以上,CO排放高于36g/kg;随值班级旋流角增大,可改善点火性能,最低点火油气比可达到0.04左右,加宽贫油熄火边界,慢车贫油熄火边界可低至0.0058;燃烧室入口温度升高可以使燃烧室点火油气比下降30%,贫油熄火油气比下降35%;5种旋流器组合方式下,NO_x和UHC的排放最低达到了1.1g/kg和3.85g/kg,满足低排放燃烧室的要求,冒烟指数达到了无烟燃烧室的标准,CO排放最高达到了51.84g/kg远高于要求值,燃烧效率最高为0.987,低于先进燃气轮机对燃烧效率的要求。
In order to study the combustion characteristics of gas turbines on the ground using 0 # diesel fuel as fuel, the characteristics of TWINS (Twins Annular Premixing Swirler, TAPS) combustor equipped with on-stage direct-injection nozzles and 5 cyclones Experiments were carried out to obtain the flow resistance and the combustion performance of the combustor under five cyclone combinations. The results show that the total pressure recovery coefficients of the two-ring pre-mixed swirling combustor are both above 0.97, which is higher than that of the classical one-ring cavity combustor. The use of direct-injection nozzles in the duty class leads to the decrease of ignition and CO emission of the combustion chamber, The oil-gas ratio is above 0.04, and the CO emission is higher than 36g / kg. As the swirling angle increases, the ignition performance can be improved. The minimum ignition oil-gas ratio can reach about 0.04, widening the flameout boundary of the lean oil, As low as 0.0058. The increase of the inlet temperature of the combustion chamber could decrease the ignition oil-gas ratio in the combustion chamber by 30% and the lean-off oil-gas ratio by 35%. Under the combination of five cyclones, the emission of NO_x and UHC reached 1.1g / kg and 3.85g / kg, respectively, to meet the requirements of low-emission combustion chamber, the smoke index reached the standard of smokeless combustion chamber, CO emission up to 51.84g / kg much higher than the required value, the highest combustion efficiency of 0.987, Advanced Gas Turbine Requirements for Combustion Efficiency.