公开(公告)号：US20240200581A1

公开(公告)日：2024-06-20

申请号：US18532204

申请日：2023-12-07

Applicant: Taiyuan University of Technology

Inventor： Long QUAN ,  Tao LIANG ,  Lianpeng XIA ,  Xiangyu WANG ,  Weinan HUANG

IPC: F15B13/02 ,  F15B11/17 ,  F15B15/14 ,  F15B19/00

CPC classification number: F15B13/02 ,  F15B11/17 ,  F15B15/1457 ,  F15B19/005 ,  F15B2211/3144

Abstract: The present disclosure belongs to the technical field of hydraulic control, and relates to a velocity and position compound control system for a pump-valve dual-source driven hydraulic cylinder used in engineering machinery. The system includes a first power source, a first hydraulic pump, a second power source, a second hydraulic pump, a safety valve, a proportional directional valve, a pilot operated check valve, a single-rod hydraulic cylinder, a handle, a tank, a rotating speed sensor, a first pressure sensor, a second pressure sensor, a third pressure sensor, a temperature sensor, a position transmitting unit, magnetic induction marks, a count correction module, an integrator module, a calculation control module, a signal acquisition module, a data storage module, a cloud memory, a communication protocol module, a fault diagnosis module, and a process monitoring module.

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.