GAS PRESSURE CONTROLLER (VERSIONS) Russian patent published in 2009 - IPC G05D16/10 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, namely, to pneumatic control devices and can be used the control the pressure of gas fed to loads from high-pressure main line. The proposed gas pressure controller comprises has inlet (1) and outlet (2) channels, body (3) with rear cover (4). Shaft (5), that travels axially, accommodates piston valve (6) and control piston (7), fixed thereon to form discharge chamber (8) and control pressure chamber (9), respectively. There is outlet pressure chamber (10) arranged between the said control piston (7) and rear cover (4) of body (3). Note that the said discharge chamber (8) communicates with gas inlet channel (1), control pressure chamber (9) communicates with the control pressure system (11), and outlet pressure chamber communicates with the gas outlet channel (2). In compliance with the first version, control pressure chamber (9) communicates with control pressure system (11) via damping system that comprises separating chamber (12) with the gas and hydraulic chambers, and a jet. Note here that the said hydraulic chamber communicates, via the said jet, with control pressure chamber (9). In compliance with the second version, shaft (5) incorporates the damping device comprising chamber (17) with piston (18) dividing the former into two parts and rigidly linked up with shaft (5), jets (19) being fitted inside the piston.

EFFECT: higher reliability of accuracy of maintaining output pressure.

9 cl, 3 dwg