润滑系统孔径式通风器的阻力计算模型及阻力特性分析  

Resistance Calculation Model and Resistance Characteristic Analysis of Orifice⁃separator in Lubrication System

作　　者：荆帅 谷俊 李国权 JING Shuai;GU Jun;LI Guoquan(Shenyang Engine Research Institute,Aero Engine Corporation of China,Shenyang Liaoning 110015,China;Key Laboratory for Power Transmission Technology of Aero-Engine,Aero Engine Corporation of China,Shenyang Liaoning 110015,China)

机构地区：[1]中国航发沈阳发动机研究所,辽宁沈阳110015 [2]中国航空发动机集团航空发动机动力传输重点实验室,辽宁沈阳110015

出　　处：《润滑与密封》2020年第9期135-141,148,共8页Lubrication Engineering

摘　　要：为了获得航空发动机润滑通风系统中应用最为广泛的孔径式通风器阻力特性,以一般结构孔径式通风器及其安装结构为模型,对孔径式通风器典型结构进行识别并定义节流孔(板)单元和容腔单元;采用理论分析方法分析节流孔(板)结构的阻力产生机制,并给出节流孔(板)阻力旋转修正系数,建立孔径式通风器通用阻力算法模型;采用CFD仿真分析和部件试验验证算法模型的准确性,通过整机试验验证模型在润滑通风系统仿真计算中的适用性;根据孔径式通风器阻力算法模型,研究旋转半径、孔径面积、质量流量与转速因素对孔径式通风器阻力特性的影响,得到阻力与旋转半径和质量流量成正比,与孔径面积成反比的结论。In order to study the resistance characteristics of orifice⁃separator,which is widely used in aero⁃engine lubrication and ventilation system,taking general structure of the orifice⁃separator as model,the typical characteristics were illustrated,and the orifice feature and release cavity were identified.According to the theory,the resistance mechanism of ori⁃fice structure was analyzed,the rotate⁃correcting coefficient was obtained and the resistance algorithm of the orifice⁃separator with blades was established.The accuracy of the resistance algorithm was verified by CFD simulation and component experiment results,and the applicability of the algorithm in the simulation calculation of lubrication and ventilation system was verified by the oil⁃vent system test.The influences of relevant factors,defined as revolving radius,orifice area,flow rate and rotating speed on the resistance characteristics of orifice⁃separator were analyzed based on the resistance algorithm of orifice⁃separator.The conclusion was drawn that the resistance was positive correlation with revolving radius and flow rate,but negative correlation with orifice area.

关 键 词：润滑系统 通风器 节流孔(板) 阻力算法 

分 类 号：V233.4[航空宇航科学与技术—航空宇航推进理论与工程] TH117.2[机械工程—机械设计及理论]