值班级当量比对同轴分级模型燃烧室燃烧特性影响  

Effects of the pilot equivalence ratio on combustion characteristics of internally-staged model combustor

作　　者：王海洋 赵铁铮 刘潇 WANG Haiyang;ZHAO Tiezheng;LIU Xiao(The Second Military Representative Office of Shenyang Haizhuang Bureau in Harbin,Harbin 150001,China;NO.703 Research Institute Of China State Shipbuilding Company Limited,Harbin 150078,China;College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]海装沈阳局驻哈尔滨地区第二军事代表室,黑龙江哈尔滨150001 [2]中国船舶集团有限公司第七〇三研究所,黑龙江哈尔滨150078 [3]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2024年第3期36-43,共8页Applied Science and Technology

基　　金：国家科技重大专项(2017-Ⅲ-0006-0031)

摘　　要：采用数值模拟方法对同轴分级模型燃烧室进行研究,探究值班级当量比变化对燃烧室内燃料掺混与燃烧特性的影响规律。本文研究了燃烧室内速度、温度与中间产物组分分布的变化情况,重点分析了不同值班级当量比下燃烧室性能及排放参数的变化规律。结果表明随着值班级当量比的增加,燃烧室头部位置燃料与空气的掺混效果恶化,旋流器出口燃料当量比明显增加。值班级当量比增加时,高温区面积与峰值温度增加,NO_(x)排放明显升高。值班级当量比由0增加至1时,燃烧室出口的NO_(x)排放量增加了近6倍,NO_(x)排放量呈现指数增加。值班级当量比的变化对燃烧效率、压力损失与CO排放影响较小,不同值班级当量比下燃烧效率在99.94%以上,压力损失为2%,燃烧室出口CO排放量为8×10^(−6)。In this paper,a numerical simulation method is used to study the internally-staged model combustor,and the influence of the change of the pilot equivalence ratio on the fuel mixing and combustion characteristics in the model combustor is investigated,obtaining the variation law of velocity,temperature,and composition distribution of intermediate products in the combustor.The emphasis is put on the analysis of the variation law of combustor performance and emission parameters under different pilot equivalence ratios.The results show that with the increase of the pilot equivalence ratio,the mixing effect of fuel and air at the head of the combustor deteriorates,and the equivalence ratio of fuel at the swirler outlet increases significantly.As the pilot equivalence ratio increases,the area of high temperature zones and peak temperature increase,and NO_(x) emissions significantly increase.When the pilot equivalence ratio increases from 0 to 1,the NO_(x) emission at the combustor outlet increases nearly six times,and the NO_(x) emission presents an exponential increase.The change in the pilot equivalence ratio has little impact on combustion efficiency,pressure loss,and CO emissions.Under different pilot equivalence ratios,the combustion efficiency is above 99.94%,the pressure loss is 2%,and the CO emission at the combustor outlet is 8×10−6.

关 键 词：船用燃气轮机 同轴分级 燃烧室 值班级 NO_(x)排放 CO排放 数值模拟 部分预混燃烧 

分 类 号：TK-9[动力工程及工程热物理]