液圧駆動システムにおける液柱分離を伴う流体過渡現象 : 第3報,油圧プレスの加圧行程開始時に発生するサージ圧力

概要

論文の詳細を見る
This paper deals with the hydraulic transient produced in the prefill line at the beginning of the compression cycle of a pull-down-type hydraulic machine press. Experiments were carried out on a small-sized simulation hydraulic circuit dynamically similar to a real machine in the 2000-ton(20-MN) class. It was found that the four types of hydraulic transients, including the states which fell into poor operation, might be produced in dependence on the system parameters. The following four topics of industrial interest were mainly examined; (1) the limiting condition of an occurrence of a column separation, (2) the cavitation duration following a column separation, (3) the surge pressure at the collapse of the first cavity and (4) the cause of the poor operation and the limiting condition of its occurrence. The calculated values from the proposed mathematical model agree with the measured values of those four topics with errors within some 10% over a wide operation range.
社団法人日本機械学会の論文
1988-12-25