PRESSURE REGULATOR AMPLIFIER Russian patent published in 2019 - IPC G05D16/10 

FIELD: gas industry.

SUBSTANCE: gas pressure regulator amplifier comprises a housing, a lid with a pulse gas supply nozzle, a mono-valve with pull-back spring, a fixed seat, a movable seat, measuring piston with rod, command pressure cavity in communication with the command pressure channel, feedback pressure cavity, a control spring. Measuring piston rod is made movable relative to the measuring piston with a ledge for contact with this piston and is equipped with an additional feedback piston located in a sleeve coaxially placed in the amplifier body. Additional piston and sleeve form a cavity, communicated through radial and axial drilling in a movable rod or with a command pressure cavity through central drilling in a mono-valve, or with a feedback pressure cavity through a slit gap between a mono-valve and a movable seat, made in movable rod and having a flat shape. Rod is loaded with a control spring through the additional piston and the ball. In addition to the central drilling, the mono-valve has two radially spaced drillings: the first for communicating with the command pressure cavity and the second through the groove on the mono-valve with the impulse gas supply cavity through the gap between the fixed and left saddle of the mono-valve, the right flat end of which is in contact with the movable seat.

EFFECT: quality of regulation is improving.

3 cl, 3 dwg