Journal of Propulsion Technology ›› 2020, Vol. 41 ›› Issue (10): 2374-2381.DOI: 10.13675/j.cnki.tjjs.190429

• Material,Propellant and Fuel • Previous Articles     Next Articles

Experimental Study on Autoxidation Coking Characteristics of Aviation Kerosene RP-3 in Typical Pipeline

  

  1. College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
  • Published:2021-08-15

典型管路RP-3航空煤油热氧化结焦特性试验研究

杨治,张净玉,姬鹏飞,骆东,何小民   

  1. 南京航空航天大学 能源与动力学院,江苏 南京 210016
  • 作者简介:杨 治,硕士生,研究领域为碳氢燃料氧化结焦。E-mail:yangzhinuaa@163.com

Abstract: In order to study the thermal autoxidation coke characteristics of domestic RP-3 aviation kerosene in complex pipeline, this paper combined characteristics of typical pipeline inside the nozzle of aero-engine combustor, and a way of constant ambient temperature was used to test the thermal autoxidation coke characteristics of straight pipe, helix pipe and L-shaped pipe. The results show that amount of coke along straight pipe presents a trend of increasing first and then decreasing, and the peak of amount of coke appears in the middle and rear part of the test pipe. There is a large fluctuation in the amount of coke along the L-shaped pipe, and it maintains at a high level in the bending region. The distribution of amount of coke along helix pipe exhibits a double peak form. Comparing three structures, the helix pipe has the largest amount of coke per unit area . When the fuel inlet flow rate is 2m/s, it is about 3.46 times that of L-shaped pipe, and straight pipe has the smallest amount of coke per unit area.

Key words: Aero-engine;RP-3 kerosene;Fuel nozzle;Autoxidation coke;Typical pipeline

摘要: 为了研究国产RP-3航空煤油在复杂油路内的热氧化结焦特性,结合航空发动机燃烧室燃油喷嘴内部典型油路结构特点,针对直管、螺旋管和L形弯管三种结构油路,基于恒定环境温度的试验方法开展氧化结焦试验研究。研究结果表明:直管的沿程结焦量呈现先增大后减小的形式,其峰值出现在直管的中后部;L形弯管的沿程结焦量存在较大幅度的波动,结焦量在试验件弯曲段整体保持较高的水平,结焦峰值位置相较直管提前出现;螺旋管的沿程结焦量分布表现为明显的双峰值形式。三种油路中,螺旋管的单位面积结焦量最大,在燃油进口速度为2m/s时,其值约是L形弯管的3.46倍,直管的单位面积结焦量最小。

关键词: 航空发动机;RP-3航空煤油;燃油喷嘴;热氧化结焦;典型管路