上海交通大学 机械与动力工程学院， 上海 200240
出版日期:2019-06-28发布日期:2019-07-23通讯作者:王旭永，男，副教授，电话(Tel.)：021-34206053；E-mail：xywang@sjtu.edu.cn.作者简介:张强(1992-)，男，河北省衡水市人，硕士生，主要研究方向为液压伺服控制系统.基金资助:装备预研教育部联合基金资助项目(6141A02022120)Sealing Clearance Optimization of Cam Rotor Vane Motor Based on Heat Property Analysis
ZHANG Qiang,ZHU Yannan,TAO Jianfeng,WANG XuyongSchool of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Online:2019-06-28Published:2019-07-23摘要/Abstract
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.
关键词: 凸轮转子； 叶片马达； 热特性； 密封间隙； 局部温度
Abstract: 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.
Key words: cam rotor; vane motor; heat property; sealing clearance; local temperature
PDF全文下载地址:
点我下载PDF
