变螺距双螺杆压缩机性能分析  

Performance Analysis of Variable Pitch Twin Screw Compressor

作　　者：宋健忠 何雪明 范海港 龙骥 卢立新 SONG Jian-zhong;HE Xue-ming;FAN Hai-gang;LONG Ji;LU Li-xin(School of Mechanical Engineering,Jiangnan University,Wuxi,Jiangsu 214122;Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment Technology,Wuxi,Jiangsu 214122)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]江苏省食品先进制造装备技术重点实验室,江苏无锡214122

出　　处：《液压与气动》2022年第8期52-57,共6页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(51275210,51975251);省产学研联创项目(1078081606192480);江苏省食品先进制造装备技术重点实验室自主研究课题(FMZ2018Y2);“六大人才高峰”(1076010241131350)。

摘　　要：针对双螺杆压缩机螺距更改时其性能参数的变化,首先,探索双螺杆压缩机性能主要影响因素,并推导主要因素接触线长度、泄漏三角形面积以及面积利用系数的计算公式;然后,使螺杆的螺距按照一定规律的变化,分析螺距变化对双螺杆压缩机性能的影响,通过MATLAB绘制螺杆的螺旋展开线并对螺旋线连续性进行分析;最后,得到一段式、两段式、三段式变螺距螺杆转子对压缩机性能的影响。结果表明,中间段变螺距对双螺杆压缩机性能有明显的提升效果。In view of the change of performance parameters of twin-screw compressor with different pitches,the main factors affecting the performance of twin-screw compressor are explored,and thecalculation formulas of contact line length,leakage triangle area and area utilization coefficient are deduced.Then,the pitch of screw changes according to a certain law,and the influence of pitch change on the performance of twin-screw compressor is analyzed.The spiral expansion line of the screw is drawn by MATLAB and the continuity of the spiral line is analyzed.The influence of the pitch of one-stage,two-stage and three-stage variable pitch screw rotors on the performance of the compressor is obtained.The results show that the variable pitch of the middle section can significantly improve the performance of twin-screw compressor.

关 键 词：双螺杆压缩机 螺距 螺旋线 性能 

分 类 号：TH138[机械工程—机械制造及自动化] TH455