Gas regulator

Regulator for a gas control apparatus in a gas transport and/or distribution network, comprising a containment body with a gas inlet and a gas outlet, and wherein, inside the containment body, the regulator comprises:

• at least one regulation stage configured to cause a pressure reduction of the gas which, passing through the regulator, goes from the inlet to the outlet, wherein said at least one regulation stage comprises a first regulation stage comprising:
• a first passage opening between a first zone and a second zone which is downstream of said first zone,
• a first shutter that is movable for obstructing the first passage opening,
• a first control head comprising a first group that is movable for the controlled movement of the first shutter,
• and wherein said regulator further comprises a safety block comprising:
• a further passage opening between an upstream zone and a downstream zone,
• a further shutter for the complete closure of said further passage opening,
• a further control head comprising a further group for the controlled movement of the further shutter,
• and wherein the further group comprises:
• a structure that is movable between:
• a first position corresponding to a condition of deactivation of the safety block wherein the further shutter is spaced from the further passage opening,
• a second position corresponding to a condition of activation of the safety block wherein the further shutter completely closes the further passage opening;
• a first movable dividing element with a first side on which directly acts the gas at pressure that corresponds to the gas pressure exiting the regulator or downstream of the regulator itself;
• a second movable dividing element positioned on or facing a second side of the first dividing element that is opposite to said first side of said first movable dividing element on which acts gas at pressure, wherein the first control head comprises a chamber wherein a first dividing element is housed which is movable and which divides the chamber into a first sub-chamber and a second sub-chamber;
• the further control head comprises a chamber wherein the first movable dividing element and the second movable dividing element are housed, thereby dividing the chamber into a further first sub-chamber and a further second sub-chamber,
• said further second sub-chamber is fluidically connected to an outlet zone of the regulator and/or to an outlet duct of said regulator, thus receiving the gas at pressure,
• thrust means are housed in said further first sub-chamber, wherein the safety block is configured so that the gas at pressure and thrust means act in opposing directions on the further group, and in that the further group comprises a mechanism, which is actuated/controlled by the movement of the structure, and wherein:
• when said structure is in said first position, the structure is configured to lock a further shaft to the structure,
• when said structure is in said second position, the structure is configured to release from the structure the force of the further shaft towards the closure of the further passage opening.

Regulator for a gas control apparatus in a gas transport and/or distribution network, comprising a containment body with a gas inlet and a gas outlet, and wherein, inside the containment body, the regulator comprises:

• at least one regulation stage configured to cause a pressure reduction of the gas which, passing through the regulator, goes from the inlet to the outlet, wherein said at least one regulation stage comprises a first regulation stage comprising:
• a first passage opening between a first zone and a second zone which is downstream of said first zone,
• a first shutter that is movable for obstructing the first passage opening,
• a first control head comprising a first group that is movable for the controlled movement of the first shutter,
• and wherein said regulator further comprises a safety block comprising:
• a further passage opening between an upstream zone and a downstream zone,
• a further shutter for the complete closure of said further passage opening,
• a further control head comprising a further group for the controlled movement of the further shutter,
• and wherein the further group comprises:
• a first movable dividing element with a first side on which directly acts the gas at pressure that corresponds to the gas pressure exiting the regulator or downstream of the regulator itself,
• a second movable dividing element positioned on or facing a second side of the first dividing element that is opposite to said first side of said first movable dividing element on which acts gas at pressure and wherein:
• the first control head comprises a chamber wherein a first dividing element is housed which is movable and which divides the chamber into a first sub-chamber and a second sub-chamber,
• the further control head comprises a chamber wherein the first movable dividing element and the second movable dividing element are housed, thereby dividing the chamber into a further first sub-chamber and a further second sub-chamber,
• the second movable dividing element comprises at least one passthrough hole to define a communication between the further second sub-chamber and the further first sub-chamber, which is provided with a discharge outlet towards the environment in which the regulator is intended to be installed.