[1]黄 思,郭嘉炜,易天坤,等.真空系统抽气过程的计算方法研究[J].江西师范大学学报(自然科学版),2020,(04):331-334.[doi:10.16357/j.cnki.issn1000-5862.2020.04.01]
　HUANG Si,GUO Jiawei,YI Tiankun,et al.The Study on the Calculation Method for Pumping Process in a Vacuum System[J].Journal of Jiangxi Normal University:Natural Science Edition,2020,(04):331-334.[doi:10.16357/j.cnki.issn1000-5862.2020.04.01]
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真空系统抽气过程的计算方法研究()
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《江西师范大学学报》（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年04期
页码:
331-334
栏目:
流体算法与应用
出版日期:
2020-08-10

文章信息/Info

Title:
The Study on the Calculation Method for Pumping Process in a Vacuum System
文章编号:
1000-5862(2020)04-0331-04
作者:
黄 思1; 郭嘉炜1; 易天坤1; 李松峰2; 吴泰忠2
1.华南理工大学机械与汽车工程学院,广东 广州 510641; 2.广东肯富来泵业股份有限公司,广东 佛山 528131
Author(s):
HUANG Si1; GUO Jiawei1; YI Tiankun1; LI Songfeng2; WU Taizhong2
1.School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou Guangdong 510641,China; 2.Guangdong Kenflo Pump Company Limited,Foshan Guangdong 528131,China
关键词:
真空泵;  真空系统;  抽气过程;  计算方法
Keywords:
vacuum pump;  vacuum system;  pumping process;  calculation method
分类号:
O 211.67
DOI:
10.16357/j.cnki.issn1000-5862.2020.04.01
文献标志码:
A
摘要:
有关抽真空系统的计算方法一般采用简单的理论模型,其结果与实际情况有较大偏差.该文以中低真空系统(包括真空室、管道和真空泵)为研究对象,基于真空泵的抽气速率与吸入压力的特性关系,根据管路流动状态选取层流或湍流模型,提出一种新的抽真空时间计算方法.选取某实测的真空系统作为案例,采用新计算方法和传统的层流算法对该系统抽真空过程分别进行了计算,发现在中高压阶段,管道流动处于湍流状态并使阻力增大,若不考虑湍流影响,则所得到的压力下降过快与实际情况有较大偏差.该文所提出的计算方法得到了实测结果的验证,从而是一种切实可行的抽真空时间计算方法.
Abstract:
The calculation methods for vacuum pumping system are usually based on some simple theoretical models,so the corresponding results have significant deviations from the actual situations.In this study,the medium and low vacuum systems(including vacuum chambers,pipes and vacuum pumps)are taken as research objects.Based on the characteristic relationship between vacuum pump's suction flowrate and inlet pressure,a novel calculation method for vacuum pumping time,in which either the laminar model or the turbulent model is selected according to the flow state of the pipeline,is proposed.A measured vacuum system is taken as example for calculation.The proposed method and traditional laminar method are respectively used to calculate the vacuum process of this system.It is found that in the middle and high pressure stage the pipeline flow is in a turbulent state and the resistance is increased.If the influence of turbulence is ignored,the calculated pressure drop will be faster and greatly deviated from actual situation.The calculation method proposed in this study was verified by actual measurement results,indicating that the method is practical for vacuum pumping time calculation.

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备注/Memo

备注/Memo:
收稿日期:2020-02-25
基金项目:国家自然科学基金(21776095)资助项目.
作者简介:黄 思(1962-),男,广西南宁人,教授,博士,博士生导师,主要从事流体机械及工程的研究.E-mail:huangsi@scut.edu.cn
更新日期/Last Update: 2020-08-10