螺栓拧紧系数对压缩机气缸变形的影响及测量方法的试验研究  

Influence of bolt tightening coefficient on compressor cylinder deformation and experimental research

作　　者：任丽萍 魏会军 颜伟豪 REN Liping;WEI Huijun;YAN Weihao(State Key Laboratory of Air-conditioning Equipment and System Energy Conservation,Zhuhai 519070,China;Guangdong Key Laboratory of Refrigeration Equipment and Energy Conservation Technology,Zhuhai 519070,China;Gree Electric Appliances,Inc.of Zhuhai,Zhuhai 519070,China)

机构地区：[1]空调设备及系统运行节能国家重点试验室,广东珠海519070 [2]广东省制冷设备节能环保技术企业重点试验室,广东珠海519070 [3]珠海格力电器股份有限公司,广东珠海519070

出　　处：《流体机械》2024年第8期76-82,共7页Fluid Machinery

基　　金：广东省自然科学基金面上项目(2020A1515011386)。

摘　　要：为了改善压缩机的装配工艺,提升压缩机的性能及可靠性,提出了一种可精确获得螺钉拧紧扭矩系数的电测方法,并结合螺钉加载特点对螺钉扭矩系数的测量方法进行了试验研究,试验得到的结果与理论结果的相对误差仅为0.86%。结果表明,该电测方法可以消除温度、弯矩等因素对准确性的影响。建立了在不同螺栓预紧力下计算气缸壁面变形的仿真分析方法,15°,105°,195°,285°共4个测点在3种扭矩(9.5,11.5,13.5 N·m)情况下气缸变形量与试验值的误差均小于10%。研究结果对高性能压缩机的设计具有参考价值。In order to improve the assembly process of the compressor,enhance the performance and reliability of the compressor,a precise electrical measurement method for obtaining the screw tightening torque coefficient was proposed.Combined with the characteristics of screw loading,an experimental study was conducted on the measurement method of the screw torque coefficient.The relative error between the experimental results and the theoretical results was only 0.86%.The results indicate that this electrical measurement method can eliminate the influence of factors such as temperature and bending moment on accuracy.A simulation analysis method was established to calculate the deformation of the cylinder wall under different bolt pretightening forces.Four measuring points,15°,105°,195°,285°,were used to measure the deformation of the cylinder under three different torques(9.5,11.5,and 13.5 N·m),and the error between the cylinder deformation and the experimental value was less than 10%.The research results have specific reference value for the design of high-performance compressors.

关 键 词：压缩机 螺栓 拧紧系数 电测法 

分 类 号：TH45[机械工程—机械制造及自动化] TB121[理学—工程力学]