DK200701396A - A pressure relief valve - Google Patents

Claims (11)

1. Pressure equalizing valve (1) comprising • an elongated valve housing (10) having o an inlet end (11) connectable to a closed compartment, o an outlet end (12) disposed opposite the inlet end (11) of the housing (10) , o a longitudinal center axis (A) and o a substantially uniform first inner width (w1) perpendicular to the center axis (A) in a cross section along the center axis (A) from the inlet end (11) to the outlet end (12); 20) disposed at the outlet end (12) and having a second inner width (w2) perpendicular to the center axis (A) in cross section along the center axis (A), a valve member (30) arranged to cooperate with the valve seat ( 20) and is arranged for translational movement in a direction along the axis (A) to provide opening and closing of the valve (1), means (40) for providing resistance to opening of the valve (1), a flow tube (50). ) arranged between the inlet end (11) and the outlet end (12) and having a third e outside width (w3) perpendicular to the center axis (A) in a cross-section along the center axis (A), and a height (h) defined between a first end (51) facing the inlet end (11) and a second end ( 52) facing the outlet end (12); and • a connection (60) between the valve element (30) and the flow tube (50), whereby the flow tube and element are arranged for simultaneous translation movement along the axis (A) where the height (h) of the flow tube (50) is equal to or greater than the flow tube (50). ) third width (w3). A pressure relief valve (1) according to claim 1, wherein the third width (w3) of the flow tube (50) is less than or equal to the second width (w2) of the valve seat (20). 3. Pressure equalizing valve (1) according to claim 1 or 2, wherein the third width (w3) of the flow tube (50) is between 50% and 90% of the first interior width (wl) of the valve body (10). A pressure relief valve (1) according to claim 3, wherein the third width (w3) of the flow tube (50) is 80% of the first interior width (wl) of the valve body (10). A pressure relief valve (1) according to any one of claims 1-4, wherein the flow tube (50) has a uniform width (w3) from the first end (51) facing the inlet end (11) and the second end (52). ) facing the outlet end (12). A pressure relief valve (1) according to any of claims 1-5, wherein the housing (10) has a cylindrical inner surface (14) and the flow tube (50) has a cylindrical outer surface (54), the widths (wl) , w2, w3) are diameters. A pressure relief valve (1) according to any one of claims 1-6, wherein the valve member (30) is formed to intercept a gas flow through the valve (1) as it flows past the valve seat (20). A pressure relief valve (1) according to claim 7, wherein the valve member (30) is conically shaped. A pressure relief valve (1) according to any one of claims 1-8, wherein the first inner width (wl) of the valve housing (10) is 100 mm, the third width (w3) of the flow tube (50) is 80 mm in diameter and the second width (w2) of the opening of the valve seat (20) is 90 mm. A pressure relief valve (1) according to any one of claims 1-9, wherein the flow tube is hollow. A pressure relief valve (1) according to any one of claims 1-10, wherein the flow tube is formed of stainless steel.