Fluid pressure relief system for pressure vessels

Fluid handling – Processes – Carbonated beverage handling processes

Patent

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Details

137469, 137489, F16K 1710

Patent

active

053336356

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:
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Publications of The Protectoseal Company, Bensenville, Ill., published Sep. 1985, Entitled "Spring Loaded Pressure/Vacuum Relief Vents", pp. 1-6.
Series No. 7800 Entitled "Emergency Pressure Vent".
"Polyvinyl Chloride Breather Vents", pp. 1-4.
Series No. 8740 Entitled "In-Line Conservation Breather Vent".
Series No. 53300 Entitled "Manhole and Emergency Pressure Cover Vent".
Series No. P8540 Entitled "FRP Conservation Breather Vent".
Series No. 18540 Entitled "Conservation Breather Vent With Pipe-Away".
Series No. 6240 Entitled "Vacuum Vent".
Series No. 16240 Entitled "Vacuum Vent".
Series No. 17800 Entitled "Conservation Pressure Vent With Pipe-Away".

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