PRESSURE CONTROLLER WITH SAFETY DEVICE Russian patent published in 2009 - IPC G05D16/10 

FIELD: physics, control.

SUBSTANCE: invention is related to the field of gas supply and industrial pneumatic automation systems, to devices of gas automatics, which provide for regulation of gas pressure. Pressure controller with safety device comprises element of adjustment to preset low pressure, gas supply channel, cavity of high pressure with installed input seat and main isolating gate equipped with auxiliary spring, cylindrical chamber with moving element equipped with the main pusher and separating chamber into auxiliary cavity communicated to atmosphere with adjustment spring installed in it and low pressure working cavity with drain channel, which is separated from high pressure cavity by means of inlet seat and main isolating gate, and from atmosphere - by movable outlet seat and additional isolating gate connected by stem with the main gate. Inlet seat is arranged in the end of the main pusher installed in auxiliary cavity, and is communicated with low pressure cavity by channel in the main pusher and movable element, moreover, additional pusher is introduced as connected kinematically with adjustment element, in the end of which there is outlet seat arranged, being communicated with atmosphere by channel in this additional pusher.

EFFECT: reduced dimensions and weight of pressure controller with safety device due to reduction of power load at adjustment element by elimination of gas-dynamic effect from the side of sensitive movable element.

1 dwg