二级射流真空发生器的结构参数优化设计  

Optimization Design of Structural Parameters of Two-stage Jet Vacuum Generator

作　　者：詹友基 吴晋泽 郑天清 ZHAN Youji;WU Jinze;ZHENG Tianqing(Fujian Key Laboratory of Intelligent Machining Technology and Equipment,Fuzhou,Fujian 350118;School of Mechanical and Automotive Engineering,Fujian University of Technology,Fuzhou,Fujian 350118)

机构地区：[1]福建省智能加工技术及装备重点实验室,福建福州350118 [2]福建理工大学机械与汽车工程学院,福建福州350118

出　　处：《液压与气动》2024年第7期44-52,共9页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(51775113,52275413);福建省引导性计划项目(2022H0024);福建省财政厅2023年科技专项资金(GY-Z23274);宁德市产学研合作项目(宁市科[2021]57)。

摘　　要：为提升二级射流真空发生器的真空度和引射系数,建立以空气为介质的二级射流真空发生器仿真模型,通过仿真模型获取相关性能数据。在此基础上,运用响应面法构建二级射流真空发生器结构参数对其真空性能影响的拟合数学模型,以真空度和引射系数为优化目标,通过求解拟合数学模型,确定了二级射流真空发生器的最优结构参数组合。结果表明:优化后二级射流真空发生器的真空度增加了13.9%,引射系数增加了26.3%。To enhance the vacuum degree and ejection coefficient of a two-stage jet vacuum generator,a simulation model of the two-stage jet vacuum generator with air as the medium was established to obtain relevant performance datas.Based on this,a fitting mathematical model of the influence of parameters of the two-stage jet vacuum generator on its vacuum performance was constructed using the response surface methodology.Subsequently,with vacuum degree and ejection coefficient as optimization objectives,the optimal structural parameter combination of the two-stage jet vacuum generator was determined by solving the fitting mathematical model.The results indicate that the vacuum degree of the optimized two-stage jet vacuum generator increased by 13.9%,and the ejection coefficient increased by 26.3%.

关 键 词：多级真空发生器 结构优化 引射系数 真空度 响应面法 

分 类 号：TH138[机械工程—机械制造及自动化] TB756[一般工业技术—真空技术]