GAS PRESSURE REGULATOR Russian patent published in 1995 - IPC

FIELD: hydraulics and pneumatics. SUBSTANCE: gas pressure regulator has housing 1 with inlet and outlet passageways. Seat 3 of the pressure-reducing valve 2 is loaded with the first spring and coupled with sensor 4 through plungers 6 and stop 7. Sensor 4 is loaded with a governing spring coupled with adjusting mechanism 5 and defines a control space together with the housing. The gas pressure regulator is provided with safety valve 8 loaded with the second spring and positioned in the control space which is in communication with the outlet passageway and with ambient through seat 9. The pressure regulator also has first and second plates 10 and 11 each of which has central opening with step 13 and 14. The pressure- reducing valve and safety valve are received in the central openings of the first and second plates respectively. The plunger are interposed between the plates over their periphery. Additional springs 12 are interposed between the housing and the second plate. The pressure regulator can have the first electromagnetic drive, armature of which is pressed to the first plate of the third spring. The first spring is interposed between the armature and the pressure-reducing valve. The pressure regulator can be provided with the second electromagnetic drive, whose armature is pressed to the sensor with the fourth spring, or the fourth spring can be interposed between the armature and sensor. EFFECT: improved accuracy of regulating. 4 cl, 4 dwg