DEVICE FOR AUTOMATIC CONTROL OF LIQUID PRESSURE IN CHAMBER Russian patent published in 2021 - IPC G05D16/20 

FIELD: industrial installations.

SUBSTANCE: device for automatic control of liquid pressure in the chamber refers to systems for automatic control of the pressure of liquid working media using electrical means and is intended for use as part of test and industrial installations with large-volume and high-pressure chambers. The pressure line contains a proportional pressure regulator connected to it after the pump with a safety valve and a proportional four-line three-position hydraulic distributor and a high-speed shut-off valve sequentially built into it, the electrical inputs of which are connected to the outputs of the control unit, the input of which is connected to a pressure sensor built into the chamber. A change in the direction of increasing the frequency of operation of the shut-off valve ensures a change in the speed of filling or emptying the chamber and an increase in the accuracy of pressure regulation in it.

EFFECT: increased accuracy of automatic control of the pressure value and the speed of its change, simplification of the design.

1 cl, 1 dwg