2009年第2期总214期
文章编号：1006-2971(2009)02-0001-06
压婚机技术 Compressorr
ANSYS在多列往复
压缩机轴系扭振分析中的应用许增金"2，王世杰"，杨树华2，月忠会”，张恩民3
■设计研究
（1.沈阳工业大学机械工程学院，辽宁沈阳110178;2.沈阳鼓风机集团有限公司研究开发部，辽宁沈阳110142；
3.沈阳鼓风机集团有限公司工艺部，辽宁沈阳110142）
摘要：随着石油化工流程规模的不断扩大，往复压缩机向超大型多列方向发展。压缩机列数的增加导致轴系扭转固有频率降低，轴系出现担转振动的可能性变大；经验表明，研制6列以上大型往复压缩机，必须进行轴系担振分析。有限元技术的发展，为压缩机轴系的动力分新提供了新的解决方案。以 6M50型往复压缩机为分析对象，利用ANSYS软件对轴系进行了静力分析、模态分析和动态响应分析。结果表明，该分析技术可以全面系统地分析轴系各项动力特性，可以直观准确地获得轴系不同部位、不
同时削的应力分布，为大型往复压缩机轴系设计提供可靠的理论依据。关键词：往复压缩机；有限元分析；曲轴扭转振动；ANSYS软件
中图分类号：TH457
文献标识码：A
CrankshaftTorsionalVibrationAnalysisofMulti-cram
ReciprocatingCompressorwithANSYS
XU Zeng-jin'.2, WANG Shi-jie',YANG Shu-hua’,XIAO Zhong-hui2,ZHANG En-min
(1. School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110178:
2.R&D Department of Shenyang Bloucer Works Group Co.,Lud.,Shenyang 110142;
3. Technologist Department of Shenyang Bloreer Works Group Co. ,Ld. ,Shenyang 110142)
Abstract: With the enlargement of scale of petro-chemistry ,there is a growing trend that reciprocating compres-sor develops towards large scale and multi-crank. The natural frequency of crankshaft torsion decreases with the increasing amount of crank of compressor,which also extend the possibility of torsional vibration, General experi-ence shows that it is necessary to analyze the crankshaft torsional vibration for 6M reciprocating compressor. Some new methods are utilized for the dynamics analysis of crankshaft in compressor with the development of FEM. By virtue of ANSYS,6M50 reciprocating compressor is discussed with the respect of static, mode and dy-namic analysis, The results reveal that such analysis technology is capable of full-scale analyzing various dynam ic characteristic of crankshaft and obtaining direct and precise stress distribution in different time and areas which provide efficient theoretical support to the compressor design.
Key words : reciprocating compressor;finite element analysis;crankshaft torsional vibration;ANSYS software
引信言 1
往复压缩机广泛应用于石化行业，其可靠性影响整个生产线的正常运转。通常情况下，当压缩机曲轴列数≤4时，压缩机一般不发生扭振；当列数增
收稿日期：2008-12-10
加到6列时，压缩机可能发生扭振，这时对轴系进行动力学设计和分析十分必要("]。
随着石油化工流程规模的不断扩大，往复压缩机向超大型多列方向发展。压缩机轴系的固有频率随着曲轴列数的增加而降低，当压缩机工作载荷加大、曲轴列数增多时，由共振引起较大振动应力而导致压缩机曲轴破坏问题日益严重，压缩机轴系扭振
.1.