AIR-OPERATED POSITION REGULATOR Russian patent published in 1995 - IPC

FIELD: automatics, pneumatic automatic control systems. SUBSTANCE: air-operated position regulator includes amplifier 1 which input is connected to supply channel 15 via choke 2 and which output is linked to output channel 14. Input of amplifier is also connected to outputs of N.C. valve 3 and N. O. valve 4. Controlling chamber of valve 3 is connected to first input channel 12. Inputs of OR gate 5 are coupled to first 12 and second 13 input channels and output to controlling chamber of second valve 4. Master unit 7 of upper position is connected to input of amplifier 1 and master unit 6 of lower position is linked to input of first valve. Regulator has stepping reversible pneumatic drive 8 with first 10 and second 11 controlling inputs connected correspondingly to first 12 and second 13 input channels and output of pneumatic drive is kinematically coupled to master unit 9 of middle position connected to input of second valve 4. EFFECT: simplified design of regulator. 3 dwg