METHOD AND DEVICE FOR POSITION DISPLAY OF HYDRAULICALLY ACTUATED FITTINGS Russian patent published in 2018 - IPC F15B15/28 F15B11/12 F15B19/00 

FIELD: construction.

SUBSTANCE: group of inventions relates to a method and apparatus for displaying the position of a hydraulically actuated fitting. Method for displaying the position of a hydraulically actuated fitting having piston (121) in actuating cylinder (1.2) for actuating fitting (1.1), connected via two hydraulic lines (2, 3) to changeover valve (7), by means of which the hydraulic lines can be switched between pressure-carrying feeding and de-pressurised return. flow of the hydraulic fluid flowing through one of the hydraulic lines is converted into a plurality of electrical pulses, each of which corresponds to a predetermined volume unit of the hydraulic fluid. Changeover valve (7) is connected to supply lines (P, T) on which other changeover valves (7) for actuating additional fittings (In) are connected. Changeover valves (7) are connected via branch line (T1) to common return line (T) provided for all fittings, wherein preload pressure higher than the pressure in common return line (T) is maintained at each changeover valve (7) in branch line (T1) to return line (T).

EFFECT: group of inventions is aimed at providing a more accurate position display.

5 cl, 4 dwg