热力透平2025，Vol.54Issue(4)：282-287,317,7.DOI:10.13707/j.cnki.31-1922/th.2025.04.009
水蒸气环境氢氧燃烧火焰筒冷却结构改进
Improvement of Cooling Structure of Flame Tube for Hydrogen-Oxygen Combustion in Steam Environment
摘要
Abstract
To meet the transformation requirement of hydrogen-capable gas turbine in the context of"Dual Carbon"target,the flame tube suitable for flexible fuel combustion in pure oxygen and steam environment was designed based on wall structure of combustor flame tube and its combustion characteristics in pure hydrogen-oxygen and steam environment.The design of transpiration and pin-fin cooling was adopted to keep a low temperature gradient,so the average wall temperature was successfully kept below 800℃on all operational conditions,therefore,the balance between material life and combustion efficiency was realized.Meanwhile,numerical simulation was carried out on convective heat transfer to analyze the influence of structure change on wall temperature.Furthermore,the usage efficiency of coolant air was assessed using the coolant allocation ratio between the flame tube and the splash plate so as to realize better convection performance with limited cooling air.The results can provide theoretical reference and optimization idea for the thermal protection design of combustors.关键词
水蒸气环境/火焰筒/冷却设计/数值模拟Key words
steam environment/flame tube/cooling design/numerical simulation分类
能源科技引用本文复制引用
李金缘,王成武,陈明敏..水蒸气环境氢氧燃烧火焰筒冷却结构改进[J].热力透平,2025,54(4):282-287,317,7.基金项目
灵活燃料纯氧燃烧室基础研究(P2022-A-Ⅱ-006-001) （P2022-A-Ⅱ-006-001）
