刚柔耦合的涡旋压缩机转子系统的动力学分析
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摘要
以涡旋压缩机转子系统为研究对象,采用Bushing连接模拟轴承,运用Ansys Workbench软件建立了考虑轴承刚度、小轴和动涡旋盘柔性的涡旋压缩机转子系统的刚柔耦合模型,进行了刚柔耦合动力学分析,得到了实际工况和理想工况时运动副反力,以及实际工况时小轴和动涡旋盘的应力、应变情况。仿真结果表明:实际工况时滚针轴承不承担动涡旋盘的倾覆力矩,倾覆力矩由3对7001轴承来承担,并造成轴向气体力分配不均匀,使2号7001轴承受力过大;小轴、动涡旋盘的强度和刚度符合设计要求。研究结果为涡旋压缩机结构设计和优化提供了理论指导。
The rotor system for scroll compressor is researched. The bearing is simulated with " Bushing Joint". The rigid-flexible coupling model of scroll compressor for rotor system with bearing stiffness,and the flexility of small shaft and orbiting scroll is established. And the rigid-flexible coupling dynamical analysis is conducted. The joint force of the actual and ideal state,the stress and deformation of the small shaft and orbiting scroll under the actual state were obtained. With the ideal state,the roller bearing is not charged with capsizal moment of orbiting scroll. Three pairs of 7001 bearing are charged with capsizal moment. Capsizal moment leads axial air force distributing asymmetrically,and the second 7001 bearing supports great force. The strength and stiffness of small the small shaft and orbiting scroll accord with design requirement. The analysis results will provide theoretical guidance for design and optimization of the scroll compressor.
The rotor system for scroll compressor is researched. The bearing is simulated with " Bushing Joint". The rigid-flexible coupling model of scroll compressor for rotor system with bearing stiffness,and the flexility of small shaft and orbiting scroll is established. And the rigid-flexible coupling dynamical analysis is conducted. The joint force of the actual and ideal state,the stress and deformation of the small shaft and orbiting scroll under the actual state were obtained. With the ideal state,the roller bearing is not charged with capsizal moment of orbiting scroll. Three pairs of 7001 bearing are charged with capsizal moment. Capsizal moment leads axial air force distributing asymmetrically,and the second 7001 bearing supports great force. The strength and stiffness of small the small shaft and orbiting scroll accord with design requirement. The analysis results will provide theoretical guidance for design and optimization of the scroll compressor.
引文
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[2]刘振全,赵嫚,李超.涡旋压缩机曲柄销防自转机构分析[J].兰州理工大学学报,2006(4):53-55.
[3]李超,谢文君,赵嫚.多场耦合作用下动涡旋盘的变形和应力研究[J].流体机械,2013,41(8):16-20.
[4]金丹,陈旭,赵树峰.涡盘在气体力和温度载荷作用下的应力及变形分析[J].压缩机技术,2004(5):7-9.
[5]刘昱,王伟,李城锁.激光陀螺捷连惯导系统IMU结构模态分析[J].中国惯性技术学报,2012,20(3):273-277.
[6]闻邦椿,顾家柳,夏松波,等.高等转子动力学—理论、技术及应用[M].北京:机械工业出版社,2002:113-121.
[7]蒋蔚,周彦伟,梁波.配对角接触轴承刚度和摩擦力矩分析计算[J].轴承,2006(8):1-3.
[8]杜迎辉,邱明,蒋兴奇,等.高速精密角接触球轴承刚度计算[J].轴承,2001(11):5-8.
[9]李松生,陈晓阳,张钢,等.超高速电主轴轴承动态支承刚度分析[J].机械工程学报,2006,42(11):60-65.
[10]陈於学,王冠兵,杨曙年.圆柱滚子轴承的动态刚度分析[J].轴承,2007(4):1-5.
[11]余洋.涡旋压缩机动力特性及仿真模拟研究[D].兰州:兰州理工大学,2014.
[12]王其磊,陈国栋.多级离心泵转子的流固耦合特性及试验分析[J].流体机械,2014,42(2):67-72.
[13]李海生,吴开波,王建松,等.无油涡旋压缩机密封条的有限元分析[J].流体机械,2015,43(5):19-23.
[14]韩小敏,王少刚,黄燕,等.TA10-Q345R爆炸复合板的界面微观结构及力学性能[J].压力容器,2015,32(6):24-29.
[15]葛佳斌,王灿星,冯占宸.基于IQN-ILS流固耦合算法的改进及应用[J].机电工程,2015,32(4):469-473.
[16]郭小宝,赵振,陈落根,等.基于能量法的重载码垛机器人重力平衡分析与设计[J].包装与食品机械,2015,33(6):43-46.
[17]郭仁宁,赵鑫,赵晶.涡旋式空气压缩机一次平衡的稳定性分析[J].煤矿机械,2006(11):68-69.