Surge reliever with increase capacity flow

Details Surge reliever with increase capacity flow Surge reliever with increase capacity flow

1980-09-15

1982-06-08

Cohan, Alan

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

137492, F16K 3112

Patent

active

043334962

ABSTRACT:
A liquid pipeline surge reliever system wherein a main surge relief valve of the expansible tube type is connected into a diverter line from the pipeline. The valve opens when pressure in the diverter line exceeds a jacket control pressure. The jacket is evacuated through a bleed valve, which may be a smaller expansible tube valve but with enough capacity to very rapid evacuation of the main valve jacket. Gas pressure from a suitable source is connected to the main valve jacket whieh, in turn, is connected to both the jacket and the inlet of the bleed valve. Pressure of pipeline liquid in a sensing line opens a pilot valve through which the jacket of the bleed valve is exhausted should the pipeline pressure reach a predetermined surge level. Pipeline pressure at that surge level also closes an on-off valve in the gas supply line while the surge is being relieved.

REFERENCES:
patent: 3754566 (1973-08-01), Gemigniani
patent: 3911941 (1975-10-01), Gerbic

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