采用平衡道和尽可能减小余隙容积是提高往复式真空泵真空度的有效措施  

Heightening Vacuum of the Reciprocating Vacuum Pump by both Adopting Balance Air Passage and Reducing Clearance Volume as far as Possible

作　　者：金永熙[1] 

机构地区：[1]南京化工大学

出　　处：《真空》1996年第4期23-26,共4页Vacuum

摘　　要：日本人设计的立式往复式真空泵采用较小的相对余隙容积（ａ＝０．０１５～０．０２５），不采用平衡道；我国温州工业泵厂研制生产的ＷＬ型泵采用了平衡通道，但取了较大的相对余隙容积（ａ＝０．０７）。本文从理论上分析了上述二种方法对往复式真空泵真空度的影响，并提出了既开平衡通道、又尽可能减小余隙容积来提高真空度的设计方法，经对所设计的ＬＶＰ型泵的测试，真空度为１３０６Ｐａ。The Japanese vertical reciprocating vacuum pumps usually have the smaller relative clearance volume (a=0.015～0.025),but they do not use balance passage.The balance passages are adopted by Chinese Wen Zhou industrial pump plant in WL type vacuum pump, but it has a larger relative clearance volume(a=0.07). In this paper an effective method for heightening vacuum by both adopting balance passage and reducing clearance volum as far as possible is developed and has been applied in design of LVP type vacuum pump.The vacuum of the LVP type vacuum pump is 1306Pa. It has a quality of international advanced level.

关 键 词：真空泵 往复真空泵 真空度 平衡道 余隙容积 

分 类 号：TB752.21[一般工业技术—真空技术]