高线速直齿轮润滑喷嘴方位参数寻优研究  

Research on Optimization of Layout Parameters for High Speed Spur Gear Lubrication Nozzle

作　　者：范静园 胡玉梅[1] 罗文军[1] 杨端 FAN Jingyuan;HU Yumei;LUO Wenjun;YANG Duan(College of Mechanical and Vehicle Engineering,Chongqing University,Chongqing 400030,China;AECC Hunan Aviation Powerplant Research Institute,Zhuzhou Hunan 412002,China)

机构地区：[1]重庆大学机械与运载工程学院,重庆400030 [2]中国航发湖南动力机械研究所,湖南株洲412002

出　　处：《润滑与密封》2023年第8期105-113,共9页Lubrication Engineering

基　　金：中央高校基本科研业务费项目(2021CDJKYJH024)。

摘　　要：为探究高线速直齿轮润滑喷嘴的最优布置方位,采用计算流体动力学瞬态模拟方法,对不同线速度下的齿轮啮合进行单相流气场仿真分析,揭示齿轮副啮合区和齿廓周围的压力分布及气流运动规律,提出最优润滑喷嘴布置方位的确定方法,并通过两相流瞬态喷油润滑仿真分析对该方法的有效性进行验证。研究表明:随着齿轮线速度的提升,齿轮啮合区域压差有线性增大的趋势,气障效应更强,气流波动辐射范围更广,两股旋转气流“交汇”形成的最弱迹线逐渐向小齿轮方向倾斜;最优的喷嘴布置坐标,可通过喷嘴待选点的气流速度流线能否进入齿轮啮合区域确定;润滑喷嘴布置在啮入侧区域且端面角度为0°较好,喷嘴射流方向与最优喷点的气流速度流线一致时,齿轮润滑效果良好。In order to explore the optimal location of lubrication nozzle for spur gear with high linear speed,the computational fluid dynamics transient simulation method was used to conduct a single-phase flow gas field simulation analysis of the gear meshing at different linear speeds.The pressure distribution and airflow motion law around the meshing area and tooth profile of the gear pair was revealed.According to the law of airflow motion,a method for determining location of lubrication nozzle was proposed,and the effectiveness of the method was verified by the simulation analysis of two-phase flow transient oil jet lubrication.The results show that with the increase of gear linear speed,the pressure difference in the gear meshing area has a linear increase trend,the air barrier effect is more obvious,the radiation range is wider.The weakest trace formed by the“meeting”of the two swirling airflow gradually slopes towards the pinion.The optimal location of lubrication nozzle can be determined by whether the airflow velocity streamline of the nozzle to be selected can enter the gear meshing area.The lubricating nozzle is preferably arranged in the area of the gear meshing side and the end face angle is 0°.When the jet direction of the nozzle is consistent with the flow line of the optimal injection point,the gear lubrication effect is well.

关 键 词：喷射润滑 单相流气场 气障效应 喷嘴布置方位 

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