Patent EA-000325-B1 (EA)
Title: Gas pressure regulator (variants)
Inventor: BAZHENOV VLADIMIR ALEXANDROVIC
IPC: G05D16/06
Filed: 1996-10-11
Abstract: 1. A gas pressure regulator which comprises a body (1); a high-pressure cavity (2); an inlet channel (3); a low-pressure cavity (4); a central channel (5); an outlet channel (7); and a regulation restrictor (8), separating cavities of low and high pressure and formed by a seat (9) onto which a closure member (10) is biased by a spring member (11), a damping chamber (12) separated from the low-pressure cavity (4) by a body wall (13) having a connecting hole (14) coaxial to the central channel (5) and connecting the low-pressure cavity (4) with the damping chamber (12), a sensitive member (15) in the form of a membrane (16) which is integrated in the body and co-operates with an active member (17), a plunger (6) enabling to an axial displacement in the body (1) and connecting sensitive member (15) to the closure member (10) wherein the plunger (6), when passing through the connecting hole (14) with a gap and the outlet channel (7) associates directly with the central channel (5)and arranged at a certain angle to it, a supply connector (20) and auxiliary channels (21), (24), (25) in the body, characterized in that the inlet of the outlet channel (7) conjugated with input of the connecting hole (14), and parameters of the regulator are expressed by: Dy = K1 x P/Q  wherein:  Dy - minimum conventional diameter of the gap between the plunger and the connecting hole (that is the diameter of the cylindrical hole, cross-section area of which equals to minimum cross-section area of the gap, m;  P - maximum pressure in the high-pressure cavity (pressure at the inlet of the regulator), Pa;  Q -maximum gas flow discharge in the outlet channel of the regulator, m<3>/s  K1 - coefficient, K1 = (0.03...1.93) x 10<-12>, s x m<5>/kg 2. A gas pressure regulator which comprises a body (1); a high-pressure cavity (2); an inlet channel (3); a low-pressure cavity (4); a central channel (5); an outlet channel (7);; and a regulation restrictor (8), separating cavities of low and high pressure and formed by a seat (9) onto which a closure member (10) is biased by a spring member (11), a damping chamber (12) separated from the low-pressure cavity (4) by a body wall (13) having a connecting hole (14) coaxial to the central channel (5) and connecting the low-pressure cavity (4) with the damping chamber (12), a sensitive member (15) in the form of a membrane (16) which is integrated in the body and co-operates with an active member (17), a plunger (6) enabling to an axial displacement in the body (1) and connecting sensitive member (15) to the closure member (10) wherein the plunger (6), when passing through the connecting hole (14) with a gap and the outlet channel (7) associates directly with the central channel (5)and arranged at a certain angle to it, a supply connector (20) and auxiliary channels (21), (24), (25) in the body, characterized in that the inlet of the outlet channel (7) conjugated with input of the connecting hole (14), and parameters of the regulator are expressed by:   wherein S - minimum cross-section area of the gap between the plunger and the connecting hole, m<2>; V - maximum volume of the damping chamber, m<3> K2 - dimensionless coefficient, K2 = (0.01...0.50). 3. Regulator according to Claim 1 or 2, characterized in that the plunger (6) being located in a region of the central channel (5), a part of which has a cross section tapering in the direction of the closure member (10), e.g. defining a conical shape. 4. Regulator according to Claim 3, characterized in that the plunger (6) being located in a region of the central channel (5) has a tapering portion. 5. Regulator according to Claim 3, characterized in that the plunger (6) being located in a region of the central channel (5) has in a longitudinal section a shape a quarter of ellipse, one axis of which is parallel to the axis of the plunger. 6. Regulator according to any of 1-5 Claims, characterized in that the central channel (5) on the seat portion has a cross section tapering in the direction of the closure member (10). 7. Regulator according to Claim 1 or 2, characterized in that the diameter of the connecting hole (14) in the wall (13) of the body (1) is equal to the diameter of the central channel. 8. Regulator according to Claim 1 or 2, characterized in that the high-pressure cavity (2) and the regulation restrictor (8) are located within a supply connector (20). 9. Regulator according to Claim 1 or 8, characterized in that the seat (9) is made as a bushing, placed between the body and the supply connector (20) the seat has a channel, connecting the high-pressure cavity (2) via the hole in the body (1) with one of the auxiliary channels (21). 10. Regulator according to Claim 1 or 8, characterized in that the seat (9) is made as one piece with the body (1), and a channel is made in the body, connecting the high-pressure cavity (2) with one of the auxiliary channels (21). 11. Regulator according to Claim 1 or 2, characterized in that the auxiliary channels (21), (24), (25) are made in the body (1) with their axes being in one plane with the axis of the outlet channel. 12. Regulator according to Claim 1 or 2, characterized in that the membrane (16) of the sensitive member (15) may be in the form of at least two separate plates defining between them a sealed damping cavity (26). 13. Regulator according to Claim 1 or 2, characterized in that the damping chamber (12) is connected with the outlet (7) or the auxiliary channels (24), (25) via the holes (28) in the wall (13) of the body (1).