G - Physics – 05 – D
Patent
G - Physics
05
D
G05D 16/16 (2006.01)
Patent
CA 2373837
The invention relates to a gas pressure regulator (1) comprising: at least a valve (2), a delivery duct (4) of low pressure gas (Pb), a regulation shutter (5) for the gas delivery flow, a control head (8) of said valve (2) defining an upper chamber (9) and a lower chamber (10); a pilot valve (12) for controlling the movement of said shutter (5) in which there is a first chamber (13) with an inlet way (14), a first outlet way (18) communicating with said delivery duct (4) and a second chamber (16) in which there is the body of an interception shutter (17) adapted to open or close said inlet way (14). The invention is characterized in that said first chamber (13) has at least a second outlet way (11) communicating with said lower chamber (10) and said upper chamber (9) and said inlet way (14) are connected to each other through an auxiliary duct (15) containing gas at an intermediate pressure (Pm) between said high pressure (Pa) and said low pressure (Pb).
L'invention porte sur un régulateur de pression (1) qui comprend: au moins une soupape (2), un conduit de distribution (4) de gaz basse pression (Pb), un volet amovible (5) de régulation de l'écoulement du gaz, une tête de commande (8) de soupape (2) formant une chambre supérieure (9) et une chambre inférieure (10); un clapet pilote (12) pour commander le mouvement du volet (5) dans lequel se trouve une première chambre (13) pourvu d'un passage (14) d'orifice d'admission (14), un premier passage d'orifice d'évacuation (18) communiquant avec le conduit de distribution (4) et une seconde chambre (16) dans laquelle se trouve le corps d'un volet d'interception (17) adapté pour ouvrir ou fermer le passage (14) de l'orifice d'admission. L'invention se caractérise en ce que la première chambre (13) possède au moins un second passage (11) d'orifice d'évacuation communiquant avec la chambre inférieure (10), et la chambre supérieure (9) et le passage de l'orifice d'admission (14) étant raccordés par un conduit auxiliaire (15) contenant le gaz à une pression intermédiaire (Pm) entre la haute pression (Pa) et la basse pression (Pb).
Cecchinato Umberto
Imboccioli Claudio
Mcfadden Fincham
Pietro Fiorentini Spa
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