基于热特性的凸轮转子叶片马达密封间隙优化
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摘要
介绍一种采用间隙密封的新型凸轮转子叶片马达(CRVM)的工作原理.在不同密封间隙和工作状态下,CRVM密封处的局部温度存在明显差异.基于压差流动温升理论、平行平板间隙流动及平行圆盘间隙径向流动模型,研究CRVM密封处的局部发热机制,并建立针对凸轮与定子、凸轮与隔板2处主要密封部位的温升模型;通过模拟计算,分析密封间隙、工作压力和工作转速对密封处局部温度升高的影响规律;搭建实验平台,测量某型CRVM在工作状态下的温度变化数据,以验证模拟计算结果的有效性.研究结果表明,当密封间隙选取不当时,会出现局部温度明显升高的现象.基于此,从防止局部油液过热和提高CRVM工作效率的角度出发,提出CRVM密封间隙的优化指标.
A new kind of cam rotor vane motor(CRVM) is introduced with its operating principle and features. The seal method of CRVM is clearance seal. Under different clearance and working conditions, the local temperature of CRVM seal is obviously different. In this study, pressure-gradient flow temperature rise theory,the parallel-plate clearance flow model and the parallel-disc clearance radial flow model are used to calculate the temperature increase caused by leakage and friction. And the simulation models of two main heating points are established according to the results: One is between cam and stator; The other is between cam and bulkhead. Through the simulation, the influence of sealing clearance, working pressure and rotating speed on the local temperature rise of the seal is analyzed. Moreover, an experimental platform is established to measure the temperature change of CRVM under working conditions, and the results of the simulating calculation are verified. The results show that when the sealing clearance is not selected properly, the local temperature will rise obviously. From the perspective of preventing local oil overheating and improving the working efficiency of CRVM, the optimization sealing clearance index of CRVM is put forward.
A new kind of cam rotor vane motor(CRVM) is introduced with its operating principle and features. The seal method of CRVM is clearance seal. Under different clearance and working conditions, the local temperature of CRVM seal is obviously different. In this study, pressure-gradient flow temperature rise theory,the parallel-plate clearance flow model and the parallel-disc clearance radial flow model are used to calculate the temperature increase caused by leakage and friction. And the simulation models of two main heating points are established according to the results: One is between cam and stator; The other is between cam and bulkhead. Through the simulation, the influence of sealing clearance, working pressure and rotating speed on the local temperature rise of the seal is analyzed. Moreover, an experimental platform is established to measure the temperature change of CRVM under working conditions, and the results of the simulating calculation are verified. The results show that when the sealing clearance is not selected properly, the local temperature will rise obviously. From the perspective of preventing local oil overheating and improving the working efficiency of CRVM, the optimization sealing clearance index of CRVM is put forward.
引文
[1] YAO J Y,JIAO Z X,MA D W,et al.High-accuracy tracking control of hydraulic rotary actuators with modeling uncertainties[J].IEEE/ASME Transactions on Mechatronics,2014,19(2):633-641.
[2] ALFAYAD S,OUEZDOU F B,NAMOUN F,et al.High performance integrated electro-hydraulic actuator for robotics-Part I:Principle,prototype design and first experiments[J].Sensors and Actuators A:Physical,2011,169(1):115-123.
[3] WANG X J,LI J Y,SHAO J P.Research on the key technique of continuous rotary electro-hydraulic servo motor[C]//2011 International Conference on Electronic & Mechanical Engineering and Information Technology.Harbin,China:IEEE,2011,3:1658-1661.
[4] 刘鹏,王旭永,陶建峰,等.无磁仿真转台用凸轮转子马达叶片干扰力矩[J].上海交通大学学报,2010,44(12):1773-1777.LIU Peng,WANG Xuyong,TAO Jianfeng,et al.Disturbance torque produced by vanes of cam rotor motor on non-magnetic motion simulator[J].Journal of Shanghai Jiao Tong University,2010,44(12):1773-1777.
[5] 马乾坤,胡少白,王旭永,等.液压伺服系统热特性研究综述[J].流体传动与控制,2016 (3):1-4.MA Qiankun,HU Shaobai,WANG Xuyong,et al.Review on thermal characteristics of hydraulic servo system[J].Fluid Power Transmission and Control,2016(3):1-4.
[6] 许海洲.一种间隙密封叶片式摆动液压马达的泄漏控制[J].机床与液压,1998 (1):55.XU Haizhou.Leakage control of a swing hydraulic motor with gap seal[J].Machine Tool & Hydraulics,1998 (1):55.
[7] 袁璠,王旭永,张文俊,等.凸轮转子叶片马达的过渡曲线中心角参数优化[J].上海交通大学学报,2016,50(5):680-685.YUAN Fan,WANG Xuyong,ZHANG Wenjun,et al.Optimization of central angel of transition curve of cam-rotor vane motor[J].Journal of Shanghai Jiao Tong University,2016,50(5):680-685.
[8] 徐川辉,王旭永,陶建峰,等.叶片马达凸轮转子过渡曲线特性分析[J].上海交通大学学报,2014,48(1):1-5.XU Chuanhui,WANG Xuyong,TAO Jianfeng,et al.Analysis of cam transition curve characteristics of cam-rotor vane motor[J].Journal of Shanghai Jiao Tong University,2014,48(1):1-5.
[9] 徐川辉.连续回转凸轮转子叶片伺服马达理论分析与研究[D].上海:上海交通大学,2014.XU Chuanhui.Research on continuous revolving servo cam rotor vane motor[D].Shanghai:Shanghai Jiao Tong University,2014.
[10] 侯文英.摩擦磨损与润滑[M].北京:机械工业出版社,2012:68-70.HOU Wenying.Friction wear and lubrication[M].Beijing:China Machine Press,2012:68-70.
[11] YUAN F,WANG X,TAO J,et al.Research on vane end face of cam-rotor vane servo motor based on disturbing torque[J].Journal of Shanghai Jiao Tong University (Science),2016,21(6):641-647.
[12] MA Q K,WANG X Y,YUAN F,et al.Effects of the friction coefficient on the torque characteristics of a hydraulic cam-rotor vane motor[J].Journal of Mechanical Science and Technology,2016,30(8):3507-3514.
[13] 朱彦楠,张强,陈立峰,等.基于效率分析的凸轮转子叶片马达液膜厚度设计[J].上海交通大学学报,2018,52(6):715-721.ZHU Yannan,ZHANG Qiang,CHEN Lifeng,et al.Liquid film thickness design of cam-rotor vane motor’s based on efficiency analysis[J].Journal of Shanghai Jiao Tong University,2018,52(6):715-721.
[2] ALFAYAD S,OUEZDOU F B,NAMOUN F,et al.High performance integrated electro-hydraulic actuator for robotics-Part I:Principle,prototype design and first experiments[J].Sensors and Actuators A:Physical,2011,169(1):115-123.
[3] WANG X J,LI J Y,SHAO J P.Research on the key technique of continuous rotary electro-hydraulic servo motor[C]//2011 International Conference on Electronic & Mechanical Engineering and Information Technology.Harbin,China:IEEE,2011,3:1658-1661.
[4] 刘鹏,王旭永,陶建峰,等.无磁仿真转台用凸轮转子马达叶片干扰力矩[J].上海交通大学学报,2010,44(12):1773-1777.LIU Peng,WANG Xuyong,TAO Jianfeng,et al.Disturbance torque produced by vanes of cam rotor motor on non-magnetic motion simulator[J].Journal of Shanghai Jiao Tong University,2010,44(12):1773-1777.
[5] 马乾坤,胡少白,王旭永,等.液压伺服系统热特性研究综述[J].流体传动与控制,2016 (3):1-4.MA Qiankun,HU Shaobai,WANG Xuyong,et al.Review on thermal characteristics of hydraulic servo system[J].Fluid Power Transmission and Control,2016(3):1-4.
[6] 许海洲.一种间隙密封叶片式摆动液压马达的泄漏控制[J].机床与液压,1998 (1):55.XU Haizhou.Leakage control of a swing hydraulic motor with gap seal[J].Machine Tool & Hydraulics,1998 (1):55.
[7] 袁璠,王旭永,张文俊,等.凸轮转子叶片马达的过渡曲线中心角参数优化[J].上海交通大学学报,2016,50(5):680-685.YUAN Fan,WANG Xuyong,ZHANG Wenjun,et al.Optimization of central angel of transition curve of cam-rotor vane motor[J].Journal of Shanghai Jiao Tong University,2016,50(5):680-685.
[8] 徐川辉,王旭永,陶建峰,等.叶片马达凸轮转子过渡曲线特性分析[J].上海交通大学学报,2014,48(1):1-5.XU Chuanhui,WANG Xuyong,TAO Jianfeng,et al.Analysis of cam transition curve characteristics of cam-rotor vane motor[J].Journal of Shanghai Jiao Tong University,2014,48(1):1-5.
[9] 徐川辉.连续回转凸轮转子叶片伺服马达理论分析与研究[D].上海:上海交通大学,2014.XU Chuanhui.Research on continuous revolving servo cam rotor vane motor[D].Shanghai:Shanghai Jiao Tong University,2014.
[10] 侯文英.摩擦磨损与润滑[M].北京:机械工业出版社,2012:68-70.HOU Wenying.Friction wear and lubrication[M].Beijing:China Machine Press,2012:68-70.
[11] YUAN F,WANG X,TAO J,et al.Research on vane end face of cam-rotor vane servo motor based on disturbing torque[J].Journal of Shanghai Jiao Tong University (Science),2016,21(6):641-647.
[12] MA Q K,WANG X Y,YUAN F,et al.Effects of the friction coefficient on the torque characteristics of a hydraulic cam-rotor vane motor[J].Journal of Mechanical Science and Technology,2016,30(8):3507-3514.
[13] 朱彦楠,张强,陈立峰,等.基于效率分析的凸轮转子叶片马达液膜厚度设计[J].上海交通大学学报,2018,52(6):715-721.ZHU Yannan,ZHANG Qiang,CHEN Lifeng,et al.Liquid film thickness design of cam-rotor vane motor’s based on efficiency analysis[J].Journal of Shanghai Jiao Tong University,2018,52(6):715-721.