摘要
新能源汽车的热管理系统直接影响整车的性能,对其空调用涡旋压缩机的性能和工作可靠性提出了很高的要求,其中涡旋压缩机传动轴的质量不平衡响应对涡旋压缩机的性能和使用寿命尤为重要。针对某型号设计转速为0~7000 r/min的涡旋压缩机传动系统,基于分布质量模型,采用模态法分析了轴系的固有特性和不同转速工况下的不平衡响应,且考虑仿真转速设置的鲁棒性,将转子系统设置在0~7000 r/min的工况内,得到前6阶固有频率、振型以及正涡动临界转速15452 r/min和32839 r/min。而后,通过气体载荷激励下的谐响应分析,得到主轴偏心销、平衡块以及尾部的变形和应力随频率变化的规律。最后,对样机进行试验,测得加速度时域和频域响应曲线。结果表明,该涡旋压缩机在0~7000 r/min设计转速下并未达到临界转速;在271.96 Hz和517.01 Hz及其边频处的不平衡振动对转子的影响较大,与谐响应分析中结果相符。研究为涡旋压缩机振动有限元分析与结构优化提供参考依据。
The thermal management system of new energy vehicles directly affects the overall vehicle performance,placing stringent demands on the performance and reliability of the scroll compressor for air conditioning,with particular emphasis on the mass imbalance response of the scroll compressor drive shaft for its performance and service life.For a certain type of scroll compressor drive system with a design speed of 0~7000 r/min,based on the distributed mass model,the intrinsic characteristics of the shaft system and the unbalance response at different speeds were analysed by using the modal method.Considering the robustness of the simulation speed setting,the rotor system was set at 0~7000 r/min,and the first six orders of the intrinsic frequency,vibration mode and the positive vortex criticality were obtained.The first six orders of intrinsic frequencies,vibration mode and critical speeds of positive eddy currents were obtained for the rotor system at 15452 r/min and 32839 r/min,and the deformations and stresses of the spindle eccentric pins,the balancing block and the tail section were analyzed by the harmonic response analysis under the excitation of the gas loads to obtain the variation of the frequencies.Finally,the prototype was experimented,and the measured acceleration time-domain and frequency-domain response curves were obtained.The results show that the scroll compressor does not reach the critical speed under the design speed of 0~7000 r/min;the unbalanced vibration at 271.96 Hz and 517.01 Hz and its side frequency has a greater impact on the rotor,which is consistent with the results in the harmonic response analysis.The study provides a reference for the vibration finite element analysis and structural optimization of the scroll compressor.
作者
陈己杰
张立勇
沈夺标
王冠博
余飞鹏
管洪杰
蒋业虎
唐娟
李同杰
王娟
蒋盼飞
李根
王文翔
CHEN JiJie;ZHANG LiYong;SHEN DuoBiao;WANG GuanBo;YU FeiPeng;GUAN HongJie;JIANG YeHu;TANG Juan;LI TongJie;WANG Juan;JIANG PanFei;LI Gen;WANG WenXiang(College of Mechanical Engineering,Anhui Science and Technology University,Chuzhou 233100,China;Anhui Phoenix Filter Co.,Ltd.,Bengbu 233000,China;Jiangsu Zhonggong High-end Equipment Research Institute Co.,Ltd.,Taixing 225400,China;Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,China;Anhui Zhongxin S&T Co.,Ltd.,Chuzhou 239000,China)
出处
《机械强度》
CAS
CSCD
北大核心
2024年第5期1053-1061,共9页
Journal of Mechanical Strength
基金
2023年蚌埠市科技计划项目(2023gx10)
安徽省科技厅重点研发计划项目(2022a05020063)
安徽省科技厅农业物质技术装备领域揭榜挂帅项目(S202320230906020016)
安徽省教育厅高校协同创新项目(GXXT-2023-099,GXXT-2023-100)
安徽省教育厅省级研究生联合培养示范基地(2022lhpysfjd071,2022lhpysfjd072)
天长智能研究院项目(tzy202101,tzy202330)
安徽科技学院人才项目(RCYJ201904)
2023凤阳县科技计划项目(2023TPY05)
泰州科技支撑项目(TG202205)资助。
关键词
涡旋压缩机
模态分析
临界转速
谐响应分析
Scroll compressor
Modal analysis
Critical speed
Harmonic response analysis
