Fluid pressure relief system for pressure vessels
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 21, 1993
Issued Date -
N/A
app pub date -
Jan 11, 1993
filing date -
Jun 29, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
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).
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