Studies of flow and cavitation in hydraulic lift valve

被引：31

作者：

Kudzma, Z. ^{[1
]}

Stosiak, M. ^{[1
]}

机构：

[1] Wroclaw Univ Technol, Fac Mech Engn, PL-50371 Wroclaw, Poland

来源：

ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING | 2015年 / 15卷 / 04期

关键词：

Lift valve; Laminar and turbulent flow; Cavitation; Noise; POPPET VALVE;

D O I：

10.1016/j.acme.2015.05.003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents the results of experimental studies of the phenomena connected with the flow of the working medium in the throttling orifice of the conical head-bevelled or feather-edged seat unit. The critical Reynolds number demarcating the laminar flow from the turbulent flow for the particular conical head-bevelled or feather-edged seat units has been determined on the basis of visualization studies. The dependence between flow ratio C-v and the Reynolds number has been determined for the dilation angle of the conical valve heads and the length of the seat generating line. Acoustic and cavitation tests have shown that valve heads with the smallest dilation angle and the highest critical velocity are characterized by the lowest level of noise in the throttling orifice at which cavitation occurs. (C) 2015 Politechnika Wroclawska. Published by Elsevier Sp. z o.o. All rights reserved.

引用

页码：951 / 961

页数：11