机械制造与自动化
機械製造與自動化
궤계제조여자동화
Machine Building & Automation
2015年
5期
11-14
,共4页
压缩机%涡旋盘%变截面%流场%热应力%热变形
壓縮機%渦鏇盤%變截麵%流場%熱應力%熱變形
압축궤%와선반%변절면%류장%열응력%열변형
compressor%orbiting scrol%variable cross-section%flow filed%thermal stress%thermal deformation
建立了变截面动涡旋盘的三维几何模型。选择结构单元SOLID185，生成其有限元模型。对涡旋压缩机流场分析得到的模拟结果，进行插值拟合处理，得到了涡旋盘表面与压缩工质的对流换热系数及温度分布函数。由此对变截面动涡盘分别在线性温度场和基于流场分析的温度场进行热分析，得到了两种热边界载荷情况下涡旋盘的温度场分布，以及热变形和Mises应力结果。比较动涡盘的两种分析结果，说明涡盘热载荷的线性简化是合理的，基于流场的有限元分析更加符合涡旋压缩机的实际工况。
建立瞭變截麵動渦鏇盤的三維幾何模型。選擇結構單元SOLID185，生成其有限元模型。對渦鏇壓縮機流場分析得到的模擬結果，進行插值擬閤處理，得到瞭渦鏇盤錶麵與壓縮工質的對流換熱繫數及溫度分佈函數。由此對變截麵動渦盤分彆在線性溫度場和基于流場分析的溫度場進行熱分析，得到瞭兩種熱邊界載荷情況下渦鏇盤的溫度場分佈，以及熱變形和Mises應力結果。比較動渦盤的兩種分析結果，說明渦盤熱載荷的線性簡化是閤理的，基于流場的有限元分析更加符閤渦鏇壓縮機的實際工況。
건립료변절면동와선반적삼유궤하모형。선택결구단원SOLID185，생성기유한원모형。대와선압축궤류장분석득도적모의결과，진행삽치의합처리，득도료와선반표면여압축공질적대류환열계수급온도분포함수。유차대변절면동와반분별재선성온도장화기우류장분석적온도장진행열분석，득도료량충열변계재하정황하와선반적온도장분포，이급열변형화Mises응력결과。비교동와반적량충분석결과，설명와반열재하적선성간화시합리적，기우류장적유한원분석경가부합와선압축궤적실제공황。
The non-uniform orbiting scrol dimensional geometry is generated. The finite element model of its variable cross-section is established with the structural unit SOLlD185. Then, the thermal load that is the surface temperature of the compressed working fluid and convective heat transfer coefficient is fitted for the load function. And the thermal analysis is done for the non-uniform orbiting scrol with the load. Compared with the analysis results of the thermal deformation and Mises stress of the scrol , it indicates that the simplified method of linear thermal load is reasonable, which can be used to analyze the deformation and stress of the scrol . And the finite element analysis based on the flow field is more suited for the actual working conditions of the scrol compressor.
