摘要
为获取某型发动机离心通风器性能,通过试验模拟通风器的油雾工作环境,综合运用测质量法与光学测量方法,获取分离效率、粒径分布与压降数据。试验结果显示,分离效率随转速增加呈现先线性上升后平缓的规律。转速从静态增加到1000 r/min,分离效率增加10%,油雾平均直径从1.8μm降低至1.3μm,粒径2.0~3.0μm基本被分离;转速增加至2500 r/min,平均粒径基本不变,未分离油雾粒径集中在2.1μm以下。空气质量流量基本不影响粒度分布,对分离效率影响小;压降随质量流量、转速增加而增加。
Tests were performed on aero-engine centrifugal separator to gain the performance data by simulating bearing cavity oil-air mist environment.Mass and optics measurement methods were used to collect the separating efficiency,particle size distribution and pressure drop data.Test results revealed that separating efficiency increased linearly and then gently while rotation increased.Separating efficiency increased 10%while rotation increased from static state to 1000 r/min,particles between 2.0μm and 3.0μm were nearly separated,and middle diameter decreased from 1.8μm to 1.3μm.While rotation increased up to 2500 r/min,middle diameter kept the same and particles below 2.1μm were kept.Air mass flow nearly had no effect on particle size distribution and separating efficiency.Pressure drop increased when air mass flow and rotation increased.
作者
蔡毅
杨家军
马磊
CAI Yi;YANG Jiajun;MA Lei(Center for Instrumentation and Rig Testing,Shanghai Commercial Aircraft Engine Manufacturing Company Limited,Aero Engine Corporation of China,Shanghai 201306,China)
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2021年第12期2683-2688,共6页
Journal of Aerospace Power
关键词
通风器
油雾场
粒度分布
分离效率
压降
separator
oil mist field
particle size distribution
separating efficiency
pressure drop
