| 摘要 |
<p>The invention is a pilot device (1) cooperating with a gas pressure regulator suitable for use in gas distribution systems and consists of: a head (2) with two chambers (4, 5) separated by a first membrane (3), the upper chamber (4) at the gas pressure regulator outlet pressure and the lower chamber (5) at atmospheric pressure; a body provided with elastic means and an axial thrust unit (6) acting on the first membrane (3) and cooperating with a regulation unit (8) having at the inlet (81) a supply pressure and at the outlet (82) the motorization gas which is transferred to the motorization chamber of the gas pressure regulator. The pilot device features a tank (11) having a wall with a further membrane (73) provided with the mechanical elastic setting means. Gas is conveyed into the tank (11) with a load pressure (P1 ) such as to modify the thrust of the elastic setting means. The device is provided with a closed compensation chamber (10) at atmospheric pressure, having the further membrane (73) in common with the tank.</p> |
