油圧管路における波動現象の研究 : 第16報,分岐管フィルタによる脈動の呼吸

概要

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Flow pulsation often causes vibration and noise in piping systems, and therefore has been a nagging concern for fluid system engineers. As is known in acoustics, a branch pipe can act as a low-impedance element for harmonic waves of specific frequencies. The present report deals with an attempt to reduce pulsation in oil hydraulic lines using branch pipes alone. Attention in paid particularly to the effects of viscosity on their behaviors as a band-elimination filter. The availability of branch pipe filters is experimentally examined in a test to reduce prominent pulsation created by a gear pump. Finally a combination of branch pipes, which is called a 'π-shape filter', has been proved to absorb the pulsation so thoroughly that it can take the place of accumulators which are conventinally used for this purpose.
一般社団法人日本機械学会の論文
1988-08-25