US 11,692,537 B2
Method and system for damping flow pulsation
Noam Dotan, Givat Yeshayahu (IL); Justus Hoffstaedt, Ettlingen (DE); Ryan Melville Whillier Brand, Hubley (CA); and Elad Orian, Jerusalem (IL)
Assigned to Comet-ME Ltd., Jerusalem (IL)
Filed by Comet-ME Ltd., Jerusalem (IL)
Filed on Jan. 11, 2021, as Appl. No. 17/145,424.
Prior Publication US 2022/0220957 A1, Jul. 14, 2022
Int. Cl. F04B 39/00 (2006.01); F04B 49/03 (2006.01); F04B 53/04 (2006.01); F04B 49/22 (2006.01)
CPC F04B 39/0033 (2013.01) [F04B 39/0027 (2013.01); F04B 39/0038 (2013.01); F04B 39/0055 (2013.01); F04B 39/0061 (2013.01); F04B 49/03 (2013.01); F04B 49/22 (2013.01); F04B 53/04 (2013.01); F04B 2205/13 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of attenuating pressure pulsations, comprising:
pumping liquid by a pump through an outlet of said pump into a liquid inlet, formed in a vessel of system for attenuating pressure pulsations and being connected to said outlet, wherein said system comprising:
a conduit in fluid communication with a lower part of said vessel, said conduit sealingly passing through a top surface of said vessel to feed a flow line outside said vessel with said liquid, wherein said liquid inlet is constituted to receive said liquid from said pump in a manner that said liquid enters both said vessel and said conduit, and creates an air-liquid interface in said vessel, by trapping in an upper part of said vessel air that attenuates pressure pulsations generated by said pump;
at least one drain opening constituted to drain said liquid out of said vessel and to allow air to fill at least said upper portion of said vessel; and
a passive valve at said at least one drain opening, constituted to assume an opened state when said pump is not in operation, and a closed state when said pump is in operation; and
temporarily ceasing said pumping to ensure opening of said passive valve, to drain out of said vessel through said at least one drain opening, and to allow air to fill at least said upper part of said vessel.