Dynamic Behavior of Valves with Pneumatic Chambers for Reciprocating Compressors

[+] Author and Article Information
M. Kato

Mechanical Engineering Research Laboratories, Kobe Steel, Ltd., 1-5-5, Takatukadai, Nishi-ku, Kobe, Japan

M. Kurohashi

Technology Development Center, Kobe Steel, Ltd., 1-5-5, Takatukadai, Nishi-ku, Kobe, Japan

M. Aoshima

Iwaya Plant, Kobe Steel, Ltd., 1-3-18, Wakinohama, Chuo-ku, Kobe, Japan

J. Vib. Acoust 115(4), 371-376 (Oct 01, 1993) (6 pages) doi:10.1115/1.2930359 History: Received October 01, 1991; Revised September 01, 1992; Online June 17, 2008


This paper describes the dynamic behavior of valves with pneumatic chambers for reciprocating compressors. These are known as “damped valves” and are capable of reducing the impact on the valve seat and valve stopper. The characteristics of the dynamic behavior of the damped valves were clarified by calculating newly derived governing equations of valve dynamics. From the calculated results, it becomes apparent that the volume of the pneumatic chambers and the clearance between the pneumatic chamber and the valve have a large influence on the impact speed of the valves. Furthermore, the valves tend to close later for a higher compressor speed to oscillate at a larger amplitude for a lower density of gas such as hydrogen. These tendencies show that the selection of the specification of damped valves is very important. The stiffness of the valve spring and the lift of the valve also affect valve behavior as with valves without pneumatic chambers.

Copyright © 1993 by The American Society of Mechanical Engineers
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