公开(公告)号：US20240191813A1

公开(公告)日：2024-06-13

申请号：US18506926

申请日：2023-11-10

Applicant: TAIYUAN UNIVERSITY OF TECHNOLOGY

Inventor： Long QUAN ,  Xingyu ZHAO ,  Lei GE ,  Weinan HUANG ,  Bo WANG

IPC: F16K37/00 ,  F15B13/044 ,  F15B19/00 ,  F16K31/42

CPC classification number: F16K37/0083 ,  F15B13/044 ,  F15B19/005 ,  F16K31/42 ,  F15B2211/87

Abstract: A multifunctional electro-hydraulic flow control valve and a flow control method. The control valve comprises a main valve, a proportional pilot valve, a flow sensor, a multifunctional valve controller, a control cavity pressure sensor, an oil inlet pressure sensor, an oil outlet pressure sensor, a temperature sensor and a cloud storage. The invention has the characteristics that a flow of the main valve is continuously controlled without being influenced by load change without installing a pressure compensator in the system, and meanwhile, the valve has the function of a flow sensor, has low pressure loss and wide flow control range, and realizes integration of flow detection and control; and information such as flow, power and efficiency of each part in a hydraulic system is monitored in real time based on a multifunctional controller, key operation state monitoring, service life prediction and fault positioning of the control valve are achieved.

公开(公告)号：US20230266777A1

公开(公告)日：2023-08-24

申请号：US17984696

申请日：2022-11-10

Applicant: Taiyuan University of Technology

Inventor： Long Quan ,  Bin ZHAO ,  Jing YANG ,  Lei GE ,  He LIU ,  Yunxiao HAO

IPC: G05D16/16 ,  G05D16/00

CPC classification number: G05D16/16 ,  G05D16/028

Abstract: Disclosed is a flow control system for digital and mechanical redundant pressure compensation. On the basis of an original pressure compensation valve, two-position three-way electromagnetic valves are added to control the opening and closing of pressure compensation valves. Furthermore, pressure sensors and a controller are added, so that the system has a digital pressure compensation function. When the pressure sensor breaks down, the flow control system is switched to a mechanical compensation mode to achieve mechanical pressure compensation, the problem that system flow cannot be controlled when the sensor breaks down is solved, and the purpose of redundancy control is achieved. Moreover, the pressure compensation valve in the loop where the highest load is located can be controlled to be completely opened through the two-position three-way electromagnetic valve to reduce pressure loss of the valve port, and the pressure is not affected by load fluctuation.