Thermal-pressure relief device

Details Thermal-pressure relief device Thermal-pressure relief device

1996-08-01

1998-06-09

Fox, John

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

137 79, F16K 1740

Patent

active

057620911

ABSTRACT:
A thermal-pressure relief device, which has an adapter (20) threaded into the wall of a pressure vessel. The adapter contains an orifice (22) therethrough with a blowout disc (30) overlapping the orifice to obstruct communication with fluid inside the vessel. The disc is attached by brazing with a filler metal in the form of a temperature responsive amalgam (38), preferably a eutectic alloy. When ambient temperatures are elevated above the melting point of the amalgam, the disc is blown out, freeing the orifice, relieving the pressure within the vessel, preventing an explosion. A protective cover in the form of a cap (42) with an impact surface (40) contains the disc when it separates from the adapter and a number of vents (48) diffuse the fluid from the pressure vessel in a safe direction.

REFERENCES:
patent: 900763 (1908-10-01), McNutt
patent: 4365643 (1982-12-01), Masclet et al.
patent: 4744382 (1988-05-01), Visnic et al.
patent: 4899777 (1990-02-01), Stone et al.
patent: 4989627 (1991-02-01), McAfee
patent: 5435333 (1995-07-01), Duvall

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