涡旋式滤油机真空泵的涡盘壁厚变化研究.pdf

FLUID MACHINERY
Vol,40,No.11,2012
文章编号:1005-0329(2012)11-0046-03
涡旋式滤油机真空泵的涡盘壁厚变化硏究
张贤明',李萍,王立存,袁健,张渊博,杨旭,陈彬
(1.重庆工商大学废油资源化技术与装备教育部工程研究中心,重庆40007;
2.西安交通大学流体机械及压缩机国家工程研究中心,映西西安710049)
摘要:对于基于泛函的通用涡旋型线的研究,选取不同的参数可分析出涡旋型线的不同性质。利用型线的曲率半径
以及曲率半径的变化规律,分析岀涡旋式潓油机真空泵的动涡盘内侧型线的变化规律,从而得出涡盘壁厚的变化规律。
与基于泛函的通用涡旋型线选取不同系数、参数,建立涡盘内外型线的笛卡尔方程得出的涡盘型线图变化规律进行比
较,结果表明:当k=2时,通用涡旋型线表示的涡旋盘为等壁厚;当k≥3时,通用涡旋型线表示的渴旋盘为变壁厚,与前
期研究结论相吻合。
关键词:滤油机真空泵;通用涡旋型线;曲率半径;壁厚变化
中国分类号:TB652
文献标识码:A
doi:10.3969/j.issn.1005-0329.2012.11.011
Research on Wall Thick Variation of Scroll Plate for Scroll Vacuum Pump
ZHANG Xian-ming, LI Ping, WANG Li-cun-2, YUAN J an, ZHANG Yuan-bo, YANG Xu, CHEN Bin
(1. Engineering Research Center for Waste Oil Recovery Technology and Equipment of Ministry of Education
Chongqing Technology and Business Uinversity, Chongqing 400067, China; 2. National Engineering Research
Center of Fluid Machiney and Conpressor, Xi an Jiaotong University, Xi an, 710049, China
Abstract: For research of general scroll profiles based on functional theory, different characters of scroll profiles can be ana-
lyzed by select different parameters. Using curvature radius of scroll profile and the variation of curvature radius, the variation of
move scroll plate inner profile of scroll vacuum pump was analyzed, then wall thick variation of scroll plates was obtained. Com
pare with the variation of scroll plate profiles, whose cartesian coordinates were installed by general scroll profiles base on func
tional theory select a different type of line factor, parameter, and the conclusions showed that when k is equal to two, the scroll
plates showed by general scroll profiles are wall thickness; and when k is equal to or greater than three, the scroll plates showed
by general scroll profiles are variable wall thickness. So it is identical with preliminary study
Key words: vacuum pump general scroll profiles; curvature radius; wall thick variation
前言
际工业和生产应用中,有3种情况需要考虑
(1)动静渴盘的涡旋体壁厚相等,但各自对
涡旋真空泵作为滤油机的关键部件,其性能其壁厚中心面是不对称的;
直接影响滤油机的工作效率。涡旋真空泵的压缩
(2)动静涡盘的壁厚不相等,且各自对其壁
部件由转子和定子组成,即动涡盘和静涡盘。工厚中心面不对称;
作时,动静涡盘由防自转机构保持相位差180°
(3)动静涡盘的壁厚不相等,但各自对其壁
两基圆中心保持R的距离,从而实现气体的吸厚中心面是对称的。作者在图像直观表达动静祸
气、压缩、排气过程。在理论分析中,一般认盘壁厚变化规律的基础上,从理论分析人手,来阐
为动、静涡盘的涡旋型线的壁厚是相等的,但实明动静涡盘的壁厚变化规律。
收稿日期:2012-01-04
基金项目:重庆市科技攻关资助项国( CSCT2011AC6086);重庆市教委科技资助项目(KJ110710);重庆市高校科资助项目
(KTD201019/KZH1211)