摘要
针对非对称无油涡旋压缩机的涡旋盘在复杂环境和受力下,容易引起变形和应力增加,进而影响密封性和工作效率的问题,对某型号非对称无油涡旋压缩机的涡旋盘在多种载荷条件下进行了数值模拟研究。首先,对该型号非对称涡旋压缩机在运行时的内部流场进行仿真模拟,分析导致温度场和压力场分布不均的原因。随后,将流场的计算结果以多种载荷方式施加到涡旋盘壁面上,以分析涡旋盘在不同载荷条件下的应力分布和变形规律。仿真结果表明,在高速运转条件下,非对称无油涡旋压缩机工作腔内部压力和温度呈现非对称分布。在多载荷耦合作用下,最大变形发生在涡旋齿齿头顶部,最大应力位于涡旋盘端板中心位置,其中温度载荷对涡旋齿变形起着主要作用,随着腔内气体温度升高,涡旋齿发生显著热变形。最后,通过搭建压缩机台架实验机验证仿真结果的准确性,为该型号压缩机的进一步优化提供了重要的理论支持。
In the operation of asymmetric oil-free scroll compressors,the scroll’s complex working environment and force conditions can easily cause deformation and stress increases,adversely affecting seal integrity and operational efficiency.To address this issue,a numerical simulation study was conducted on the scroll of a specific model of asymmetric oil-free scroll compressor under various load conditions.Initially,a simulation of the internal flow field of the model was performed during operation to analyze the causes of uneven temperature and pressure field distributions.Subsequently,the results of the flow field calculations were applied to the scroll wall in various loading modes to analyze the stress distribution and deformation patterns under different load conditions.The simulation results show that at high-speed operation,the pressure and temperature inside the working chamber of the asymmetric oil-free scroll compressor exhibit an asymmetric distribution.Under multi-load coupling,the maximum deformation occurs at the top of the scroll’s teeth,with the greatest stress located at the center of the scroll’s end plate.Temperature load plays a significant role in the deformation of the scroll teeth,leading to significant thermal deformation as the internal gas temperature increases.Finally,by constructing a compressor test rig,the accuracy of the simulation results was verified,providing important theoretical support for further optimization of this compressor model.
作者
杨冬林
刘伟
李昊
汪昱
李聪敏
YANG Donglin;LIU Wei;LI Hao;WANG Yu;LI Congmin(School of Mechanical and Electrical Engineering,Anhui Jianzhu University,Hefei 230601,China;Hefei Bolin Advanced Materials Co.Ltd.,Hefei 230601,China;Anhui Province Key Laboratory of Critical Friction Pair for Advanced Equipment,Hefei 230601,China)
出处
《陕西理工大学学报(自然科学版)》
2025年第4期10-18,108,共10页
Journal of Shaanxi University of Technology:Natural Science Edition
基金
国家自然科学基金项目(51875152)
安徽省高校杰出青年科研项目(2022AH020025)
安徽省高等学校自然科学重点研究项目(2022AH050257)。
关键词
非对称无油涡旋压缩机
多载荷耦合
数值模拟
变形分析
asymmetric oil-free vortex compressor
multi load coupling
numerical simulation
deformation analysis
作者简介
通信作者:刘伟,男,博士,研究员。
