Surge reliever with increase capacity flow

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

F - Mech Eng,Light,Heat,Weapons

16

K

137/37

F16K 31/12 (2006.01) F16K 7/07 (2006.01) F16L 55/045 (2006.01) F17D 1/20 (2006.01)

Patent

CA 1161333

ABSTRACT OF THE DISCLOSURE 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 suit- able source is connected to the main valve jacket which, 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.

385597

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