Apparatus for pressure regulating

Apparatus for regulating gas pressure, of the type suitable for use and installed in systems and/or networks for transport and/or distribution of gas, said apparatus configured to be connected upstream with an inlet duct for the gas in said apparatus and downstream with an outlet duct, the apparatus comprising:

• a main regulator comprising:
• an inlet area fluidically connectable with said inlet duct,
• an outlet area fluidically connectable with said conduit outlet,
• a shutter which acts between said inlet area and said outlet area and which is movable between a closed position, in which the shutter interrupts the passage of gas from said inlet area towards said outlet area, and at least one opening position in which the shutter defines a reduction of a gas passage section from the inlet area to said outlet area, thus causing a corresponding reduction in gas pressure to be said inlet area to said outlet area,
• means, which are configured to push said shutter towards said closed position,
• a motorization chamber in which a movable element is housed, which divides the chamber into a first sub-chamber and a second sub-chamber, said first sub-chamber being fluidly connected with the inlet area and/or connectable with said inlet duct, said second sub-chamber being fluidly connected with the outlet area and/or connectable with said outlet duct to said apparatus, said movable wall and said shutter being integral with each other in translation,
• a pilot regulator comprising:
• an inlet which is fluidically connected with said first sub-chamber, to thus allow the passage of gas from said first sub-chamber towards said inlet of the pilot regulator,
• an outlet which is fluidically connected to said second sub-chamber,
• at least one pilot valve which regulates the passage of gas from the inlet to the outlet of said pilot regulator,
• said pilot regulator is configured such that the closing and the degree of opening of said pilot valve is controlled on the basis of the difference between a calibration pressure, and the gas pressure in correspondence with said outlet area and/or the outlet duct to said apparatus,
• said main regulator is configured so that the gas pressure in said second sub-chamber, and which comes from the pilot regulator, acts on the movable wall of the motorization chamber so as to move said shutter towards said opening condition, while the gas pressure in said first sub-chamber acts on the movable wall of the motorization chamber so as to move said shutter towards said closing condition,
• wherein said first sub-chamber of the motorization chamber is in communication with the inlet area and/or with the inlet duct by means of a first fluidic connection section which is obtained inside the body/casing of the main regulator,
• and wherein the apparatus further comprises at least one intermediate element, which is fixed and/or rests and/or is in one piece with the shutter and with the movable wall, wherein said first fluidic connection section is defined by a passage duct which passes through said at least one intermediate element, to thus put the fluidic communication area in fluid communication with the inlet area with the first sub-chamber of the motorization chamber.

Apparatus for regulating gas pressure, of the type suitable for use and installed in systems and/or networks for transport and/or distribution of gas, said apparatus configured to be connected upstream with an inlet duct for the gas in said apparatus and downstream with an outlet duct, the apparatus comprising:

• a main regulator comprising:
• an inlet area fluidically connectable with said inlet duct,
• an outlet area fluidically connectable with said conduit outlet,
• a shutter which acts between said inlet area and said outlet area and which is movable between a closed position, in which the shutter interrupts the passage of gas from said inlet area towards said outlet area, and at least one opening position in which the shutter defines a reduction of a gas passage section from the inlet area to said outlet area, thus causing a corresponding reduction in gas pressure to be said inlet area to said outlet area,
• means, which are configured to push said shutter towards said closed position,
• a motorization chamber in which a movable element is housed, which divides the chamber into a first sub-chamber and a second sub-chamber, said first sub-chamber being fluidly connected with the inlet area and/or connectable with said inlet duct, said second sub-chamber being fluidly connected with the outlet area and/or connectable with said outlet duct to said apparatus, said movable wall and said shutter being integral with each other in translation,
• a pilot regulator comprising:
• an inlet which is fluidically connected with said first sub-chamber, to thus allow the passage of gas from said first sub-chamber towards said inlet of the pilot regulator,
• an outlet which is fluidically connected to said second sub-chamber,
• at least one pilot valve which regulates the passage of gas from the inlet to the outlet of said pilot regulator,
• said pilot regulator is configured such that the closing and the degree of opening of said pilot valve is controlled on the basis of the difference between a calibration pressure, and the gas pressure in correspondence with said outlet area and/or the outlet duct to said apparatus,
• said main regulator is configured so that the gas pressure in said second sub-chamber, and which comes from the pilot regulator, acts on the movable wall of the motorization chamber so as to move said shutter towards said opening condition, while the gas pressure in said first sub-chamber acts on the movable wall of the motorization chamber so as to move said shutter towards said closing condition, and wherein
• said first sub-chamber of the motorization chamber is in communication with the inlet area and/or with the inlet duct by means of a first fluidic connection section,
• the second sub-chamber of the motorization chamber is in communication with the outlet area and/or with the outlet duct by means of a second fluidic connection section,
• and wherein the second connection section for discharging the gas of the second sub-chamber is configured in such a way as to have flow losses higher than those of the first connection section for the supply/draft of the gas within the first sub-chamber of the motorization chamber.