大气温度对某燃机启动过程影响机理的研究  

Study on the Influence Mechanism of Atmospheric Temperature on the Starting Process of a Gas Turbine

作　　者：王柏贺 Bai-he Wang(AECC Shenyang Engine Design Institute)

机构地区：[1]中国航发沈阳发动机研究所

出　　处：《风机技术》2023年第6期81-85,共5页Chinese Journal of Turbomachinery

摘　　要：本文定量分析了大气温度变化对燃机启动过程性能的影响机理,以某型燃机启动试验数据为基础,分析了大气温度变化对燃机进口空气流量和燃烧室出口温度的影响规律。结果表明,随大气温度升高,燃机进口空气密度逐渐下降,进口空气流量减小,油气比增大,燃烧室出口温度升高。启动过程中,燃烧室出口温度的增大会提高升转速率;在点火成功前空气流量增大会降低升转速率,点火成功后提高升转速率,但影响程度低于燃烧室出口温度对启动升转速率的影响。This paper mainly quantitatively analyzes the influence mechanism of atmospheric temperature change on the performance of the starting process of the gas turbine.Based on the starting test data of a certain gas turbine,the influence of atmospheric temperature change on the air flow rate and combustion chamber outlet temperature of the gas turbine are analyzed.The research show that with the atmospheric temperature increases,the air density and the inlet mass flow decrease,the oil-gas ratio and the outlet temperature of combustion chamber increase.During the starting process,increasing the combustion chamber outlet temperature always increases the rise rate;increasing air flow reduces the rise rate before successful ignition,and increase the rise rate after successful ignition,but the influence degree is lower than the influence of the combustion chamber outlet temperature on the starting rise rate.

关 键 词：燃气轮机 启动性能 大气温度 油气比 

分 类 号：TK479[动力工程及工程热物理—动力机械及工程]