LIQUID FLOWRATE REGULATOR Russian patent published in 2002 - IPC

FIELD: regulation of liquid flowrate in high pressure main lines, for example in systems for controlling liquid type missile engines. SUBSTANCE: regulator includes controlled hydraulic throttle and stabilizer of throttle pressure drop mounted in hydraulic main line successively with throttle. Stabilizer has two cavities for comparing pressure values; one cavity is joined with inlet of throttle, other cavity - with outlet of throttle. Spring-loaded sensitive member secured to throttling stem of pressure drop stabilizer is mounted between said cavities. Novelty is communication of throttle inlet with its outlet by means of large number of mutually parallel ducts; each duct is provided with throttle washer. Throttle itself is digital one, it is in the form of actuating valves with control cavities mounted in respective ducts. Regulator is provided with pilot valves for controlling actuating valves; pilot valves are in the form of electrohydraulic valves with control passages. Each control passage is connected with control cavity at least of one actuating valve. EFFECT: improved design of regulator providing enhanced quick response. 6 cl, 3 dwg