基于火焰电离电流的全预混燃烧器燃烧状态监测  

Combustion State Monitoring of Fully Premixed Burner based on Flame Ionization Current

作　　者：孙德坤 SUN De-kun(School of Thermal Engineering,Shandong Jianzhu University)

机构地区：[1]山东建筑大学热能工程学院

出　　处：《建筑热能通风空调》2022年第1期54-56,共3页Building Energy & Environment

摘　　要：本文结合目前全预混燃烧技术的广泛使用,提出了一种基于火焰电流检测技术的燃烧系统闭环控制方法,实现一次空气系数和燃烧状态监测的直接反馈控制,从而提高燃烧效率和稳定性,实现燃烧的安全控制。本研究通过在实验室甲烷/空气燃料混合物的锥形火焰上实验,研究了电极位置,偏置电压,火焰功率(气流速度)和一次空气系数对火焰电流的影响。结果表明,采用所提出参数的火焰电流传感器能够正确识别火焰状态,包括点火,燃烧和熄灭。Combined with the wide use of fully premixed combustion technology,this paper proposes a closedloop control method of combustion system based on flame current detection technology to realize the direct feedback control of primary air coefficient and combustion state monitoring,so as to improve the combustion efficiency and stability and realize the safety control of combustion.The effects of electrode position,bias voltage,flame power(air velocity)and primary air coefficient on flame current were studied by experiments on a conical flame of methane/air fuel mixture in the laboratory.The results show that the flame current sensor with the proposed parameters can correctly identify the flame state,including ignition,combustion and extinction.

关 键 词：全预混燃烧 火焰电流 一次空气系数 控制 

分 类 号：TK16[动力工程及工程热物理—热能工程]