HYDRAULIC SYSTEM WITH FEEDBACK AND METHOD OF ITS USE Russian patent published in 2023 - IPC F15B9/09 

FIELD: hydraulics.

SUBSTANCE: hydraulic feedback system and the method of its use are designed to study the filtration properties of the rock in order to extract oil by displacing it with various fluids. The feedback hydraulic system contains a servo drive, an electric motor, a pressure supply device, fluid supply and discharge lines, two valves, a working chamber, two feedback sensors, a servo controller and a control unit, the system is designed with feedback on the position of the pressure supply device shaft and rotation speed of the servo motor. The servo drive includes an electric motor and ensures the movement of the pressure supply device. The supply and discharge lines of fluid substances communicate with a pressure supply device with two valves and a working chamber. Two feedback sensors, a servo controller and a control unit provide feedback on the position of the shaft of the pressure supply device and the rotation speed of the servo motor. The method for studying porous samples consists of stages in which the position of the shaft of at least one pressure providing device is determined using at least one position sensor, at least one servo drive of the hydraulic system is activated, and a signal is transmitted from at least one rotation angle sensor included in the servo drive system to at least one servo controller, a signal is transmitted from the servo controller to the control unit in real time, the rotation speed of the servo drive electric motor and the position of the shaft of at least one pressure supply device are measured, the working volume of the pressure supply device is changed, the movement of fluid substances along the lines of supply and removal of fluid substances are carried out, the flow of fluid substances in at least one working chamber is regulated and the measured values are maintained at a given level.

EFFECT: increasing the efficiency of the hydraulic system, including due to high accuracy of pressure and flow control and the ability to switch fluid pumping modes.

17 cl, 2 dwg