Hydraulic Unit with Cyclogram Control for Scavenging Aircraft Hydraulic Systems

摘要

The patent involves a hydraulic unit with cyclogram control for breaking in aircraft hydraulic systems, consisting of a hydraulic pump located on a hydraulic tank, intake and pressure lines with filters, return valves, measuring devices, on-board sockets, a radiator, and a hydraulic accumulator connected to the intake line. To automate the measuring device of the hydraulic system in the aircraft being inspected, after the hydraulic system has been broken in at a given pressure, and to automatically replace the working fluid while removing air from the aircraft's hydraulic system, the unit is equipped with a discharge line connected through an electromagnetic valve to the intake line and through a safety valve to the hydraulic tank; an intermediate pressure line is connected through the measuring device and the electromagnetic valve to the compressor line, and through a throttle to the intake line. At this point in the intake line are placed low and high-pressure indicators, which the booster pump switches on and off when certain pressure limits are attained. (Author)