为了探究传统天然气燃气轮机对氢气燃料的适应性，基于现役某型工业低排放燃气轮机结构和性能，用数值模拟方法分析了燃料中氢气比例对低排放燃烧室性能的影响，确定了燃烧室燃用甲烷和氢气燃料的换用性能。研究表明：在1.0额定工况，掺氢比小于等于30%时，燃烧室不发生回火，喷嘴内部和火焰筒肩部回流区的温度以及燃烧室的总压损失随掺氢比的升高而升高，NOx排放体积分数小幅升高，CO排放体积分数减少；当掺氢比大于30%时，燃烧室发生回火，喷嘴和火焰筒肩部回流区温度、总压损失、NOx排放体积分数大幅升高，CO排放基本为零。在其他工况下，负荷变化对燃烧室边界条件影响较为复杂，对喷嘴回火边界影响无单调性变化规律。

To explore the adaptability of traditional natural gas turbines to hydrogen fuel, based on the structure and performance of a certain type of industrial lowemission gas turbine, the influence of the proportion of hydrogen in the fuel on the performance of the lowemission combustion chamber was analyzed by numerical simulation method, and the conversion performance of methane and hydrogen fuel in the combustion chamber was determined. The results show that under the full load condition, when the hydrogen mixing ratio is less than 30%, the combustion chamber does not backfire, the temperature in the nozzle and the circulating zone of the flame tube shoulder and total pressure loss in the combustion chamber increase with the increase of the hydrogen mixing ratio, the NOx emission volume fraction increases slightly, and the CO emission volume fraction decreases; when the hydrogen mixing ratio is more than 30%, the combustion chamber is tempered, and the temperature in the nozzle and the circulating zone of the flame tube shoulder, the total pressure loss and NOx emission volume fraction increase significantly, and the CO emission is almost 0. Under other working conditions, the influence of the load variation on the combustion chamber boundary condition is complex, and the influence of the gas turbine working condition on the nozzle tempering boundary has no monotonicity variation.

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国家科技重大专项（2017Ⅲ00060031，J2019Ⅲ00120055）；黑龙江省“百千万”工程科技重大专项（2019ZX03A03）；中船集团自立科技项目（202109Z）；黑龙江省自然科学基金（TD2021E001）