双螺杆制冷压缩机转子轴心轨迹波动特性试验研究  

Experimental study of the fluctuation characteristics of axis orbit of rotors in twin-screw refrigeration compressor

作　　者：侯峰 杨彩 何永宁 于志强 邢子文[4] HOU Feng;YANG Cai;HE Yongning;YU Zhiqiang;XING Ziwen(School of Energy and Power Engineering,Zhengzhou University of Light Industry,Zhengzhou 450000,China;Information Management Center,Zhengzhou University of Light Industry,Zhengzhou 450000,China;Moon-Tech,Yantai 264000,China;School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]郑州轻工业大学能源与动力工程学院,郑州450000 [2]郑州轻工业大学信息化管理中心,郑州450000 [3]冰轮环境技术股份有限公司,山东烟台264000 [4]西安交通大学能源与动力工程学院,西安710049

出　　处：《流体机械》2021年第1期16-21,28,共7页Fluid Machinery

基　　金：2020年度河南省科技攻关项目(202102310232)。

摘　　要：随着制冷系统的不断发展,双螺杆制冷压缩机作为系统的核心部件,其运行压力也越来越高,使得滑动轴承的应用也越来越广泛,以承受不断增大的转子径向力,而转子轴心轨迹是滑动轴承工作状态的综合反映。本文通过搭建双螺杆制冷压缩机转子轴心轨迹测试系统,对不同工况以及内容积比下的轴心轨迹进行了试验研究。研究结果表明:与滚动转子压缩机、离心压缩机等旋转机械不同,双螺杆压缩机的转子轴心轨迹大致呈椭圆形,且每个运行周期中还存在若干波动,这些波动的数目对应于压缩机的阴转子齿数,即转子径向动载荷的波动频率。With the development of refrigeration system,the twin-screw compressor as the core component is operating at higher and higher pressure level.The journal bearing is commonly used in the twin-screw refrigeration compressor to bear the bigger and bigger radial force.Journal centre motion trajectory is a comprehensive reflection of journal bearing working condition.In this paper,a standard refrigeration compressor performance measurement test rig was set up and the axis orbit under different operating conditions and built-in volume ratios were measured.The research results show that different from rotary machinery such as rolling piston compressor,centrifugal compressor,the axis orbit of twin-screw compressor rotor takes the shape of an approximate ellipse,and there are several fluctuations in each operation cycle,and number of these fluctuations corresponds to the number of teeth of the female rotor.

关 键 词：双螺杆压缩机 转子径向力 轴心轨迹 

分 类 号：TH45[机械工程—机械制造及自动化] TB652[一般工业技术—制冷工程]