High temperature safety relief system

Details High temperature safety relief system High temperature safety relief system

1988-11-07

1989-09-12

Cohan, Alan

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

1374925, 251 635, G05D 1600

Patent

active

048650749

ABSTRACT:
A high temperature safety relief system for a pressure vessel (10) including a pilot controlled main relief valve (16) and an associated non-flowing pilot valve (34) with high temperature metal or metal like seals for temperatures as high as around 1000.degree. F. provided for both the main relief valve (16) and pilot valve (34). The main valve body (26) has a main body chamber (48) in fluid communication with the inlet flow passage (45) when the reciprocal piston valve member (88) is in seated closed position. The movement of the piston valve member (88) is cushioned during movement to open position and during movement to closed position. The non-flowing pilot valve (34) has an elongate internal housing (204) receiving the inlet line (36) along its longitudinal axis and the housing (204) is mounted for external rotational adjustment to control the blowdown pressure.

REFERENCES:
patent: 3414008 (1968-12-01), Greenwood
patent: 3512560 (1970-05-01), Weise
patent: 3664362 (1972-05-01), Weise
patent: 3726301 (1973-04-01), Schmidt
patent: 3754566 (1873-08-01), Gemigniani

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