Fluid handling – Systems – System with plural openings – one a gas vent or access opening
Patent
1993-01-11
1993-09-21
Chambers, A. Michael
Fluid handling
Systems
System with plural openings, one a gas vent or access opening
137587, 251 86, F24K 2400, F16K 2500
Patent
active
052460347
ABSTRACT:
A fluid pressure relief system and method for a pressure vessel or tank (10) having a normal vent (16) with a first pilot operated safety valve (18) and an emergency vent (62) having a second pilot operated safety valve (25). A vapor recovery line (20) is connected to relief valve (18) and collected at a vapor storage container (21). A manway (22) on the pressure vessel (10) shown in FIG. 2 defines the emergency vent (62) and a main valve member (66) has a counterweight (74) thereon to urge main valve member (66) to a seated closed position on nozzle (60). The first pilot operated safety valve (18) for the normal vent (16) is shown in FIG. 7 and has a T-shaped body (142) with a main relief valve member (172) at one end of the body (142) mounted for movement in a generally horizontal direction and controlled by a diaphragm (176) at an opposite end of the body (142).
REFERENCES:
patent: 2479688 (1949-08-01), Lindgren
patent: 2875975 (1959-03-01), Hajny
patent: 3820755 (1974-06-01), Greenwood et al.
patent: 4114850 (1978-09-01), Alamprese
patent: 4137943 (1979-02-01), Roth
patent: 4266574 (1981-05-01), Jilling
Drawing No. 11-0654 Rev. A of Anderson, Greenwood & Co. Entitled 2"-2" Type 9300 Single Chamber; Sheet 1 of 3, 1992.
Drawing No. 11-0654 Rev. A of Anderson, Greenwood & Co. Entitled 2"-12" Type 9300 Single Chamber; Sheet 2 of 3, 1991.
Sketch of Anderson, Greenwood & co. Entitled "Low Temp Equalizer Seal", Sketch 1, (Selector Valve Articulated Disc), 1991.
Sketch of Anderson, Greenwood & Co. Entitled "High Temp Equalizer Seal", Sketch 2, (Selector Valve Articulated Disc), 1991.
Sketch of Anderson, Greenwood & Co. Entitled "CVIB Check Valve" (Articulated Disc Design Features) Layout Dated Mar. 1, 1976, 1991.
Higgins Thomas F.
McNeely Michael D.
Chambers A. Michael
Keystone International Holdings Corp.
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