SYSTEMS TESTING TIGHTNESS OF CLOSED VOLUMES Russian patent published in 1997 - IPC

FIELD: mechanical engineering, systems testing tightness of closed volumes, for instance, sections of pipelines under conditions of space. SUBSTANCE: systems testing tightness of closed volumes has gas regulator 2 of supercharging pressure, supercharging valve 7 with actuators 6, 5 for opening and shutting, gas pressure indicator 4, information display 17, signal former 8, first 9 and 10 units of time delay, first 12, second 13 and third 14 coincidence circuits, signal inverter 11, first 15 and second 16 storages, first 19 and second 20 amplifier units. EFFECT: enhanced functional efficiency. 1 dwg