Open Access

ARTICLE

An Analysis of the Static and Dynamic Behavior of the Hydraulic Compensation System of a Multichannel Valve

by Jikang Xu^1,4, Ruichuan Li^1,2,*, Yi Cheng², Yanchao Li³, Junru Yang³, Chenyu Feng⁴, Xinkai Ding², Huazhong Zhang⁵

1 College of Transportation, Shandong University of Science and Technology, Qingdao, 266590, China
2 School of Mechanical and Automotive Engineering, Qilu University of Technology, Jinan, 250353, China
3 College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
4 Rizhao Haizhuo Hydraulic Co., Ltd., Rizhao, 276800, China
5 Rizhao Polytechnic, Rizhao, 276800, China

* Corresponding Author: Ruichuan Li. Email:

(This article belongs to the Special Issue: EFD and Heat Transfer IV)

Fluid Dynamics & Materials Processing 2023, 19(7), 1817-1836. https://doi.org/10.32604/fdmp.2023.022602

Received 17 March 2022; Accepted 29 June 2022; Issue published 08 March 2023

Abstract

Electro-hydraulic proportional valve is the core control valve in many hydraulic systems used in agricultural and engineering machinery. To address the problem related to the large throttling losses and poor stability typically associated with these valves, here, the beneficial effects of a triangular groove structure on the related hydraulic response are studied. A mathematical model of the pressure compensation system based on the power-bond graph method is introduced, and the AMESim software is used to simulate its response. The results show that the triangular groove structure increases the jet angle and effectively compensates for the hydrodynamic force. The steady-state differential pressure at the valve port of the new pressure compensation structure was 0.65 MPa. Furthermore, experimental results show that the pressure difference at the main valve port is 0.73 MPa, and that the response time is less than 0.2 s. It is concluded that the new compensation structure has good pressure compensation response characteristics.

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