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

作　　者：Jikang Xu Ruichuan Li Yi Cheng Yanchao Li Junru Yang Chenyu Feng Xinkai Ding Huazhong Zhang 

机构地区：[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

出　　处：《Fluid Dynamics & Materials Processing》2023年第7期1817-1836,共20页流体力学与材料加工（英文）

基　　金：This research was funded by the 2020 Shandong Province Key Research and Development Programs(Major Technological Innovation Projects):Construction Machinery Integration Research and Application of Key Technologies for Intelligent Integration and Matching of Vehicle Assembly(2020CXGC011005);Large Tractor Hydraulic CVT Intelligent Continuously Variable Transmission Integration Research and Application(2020CXGC010806);Development and Application of High-Horsepower High-Efficiency Intelligent Tractors(2021CXGC010812).

摘　　要：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.

关 键 词：Electrohydraulic proportional valve spool shape pressure compensation valve port differential pressure response time 

分 类 号：O35[理学—流体力学]