Surface tension storage device with buffer-tank

Surface tension storage system comprising:

• an enclosure designed to contain a liquid and a pressurant gas, a liquid-expelling device situated close to an outlet of said enclosure and means for feeding liquid to the expelling device, wherein the said liquid-expelling device consists of a structure made up of an assembly of rigid elements defining:
• a grid-like interior surface of the structure which delimits a central passage surrounded by the structure and communicating with the outlet,
• a grid-like exterior surface which opens on to the inside of the enclosure,
• a set of gaps delimited by the surfaces of the said elements, which extend continuously between the interior surface and the exterior surface of the structure and the width of which increases in relation to the distance to the central passage, from a minimum value selected so as to form a gas barrier along the inner surface delimiting the central passage, up to a maximum value selected so as to prevent the liquid contained inside the structure from being expelled into the tank, as long as the ambient acceleration, does not exceed a given threshold, and
• a liquid input to where the feeding system arrives, said structure constituting a buffer-tank from where the liquid may be expelled through the central passage under the effect of the pressurant gas at each liquid-utilizing phase and which is re-filled with the liquid contained in the enclosure by means of the feeding device.