Apparatus and method for eliminating champagne effect in compres

Hydraulic and earth engineering – Fluid control – treatment – or containment – Fluid storage in earthen cavity

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60398, 405 53, B65G 500

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active

043915523

ABSTRACT:
A compressed air energy storage system including a subterranean cavern, a ground level reservoir, a generally vertical shaft and a tunnel connecting the cavern and the lower end of the shaft is disclosed. Air bubbles which form in and rise through the water in the shaft are concentrated at the center of the shaft to thereby form a substantially air free water column in the shaft to insure a constant hydrostatic head in the cavern. The air bubbles are concentrated by imparting a spiral motion to the air bubble/water mixture, primarily with a number of nozzles which inject water into the shaft. Spiral vanes mounted along the interior surface of the shaft, but leaving the shaft substantially unobstructed, aid in imparting rotary motion to the mixture. The bubbles rise along the axis of the shaft and are discharged into the atmosphere. A number of bypass passages parallel the upper region of the shaft and fluidly connect the reservoir with openings in the shaft located a short distance above the nozzles.

REFERENCES:
patent: 3385067 (1968-05-01), Van Eek
patent: 3643426 (1972-02-01), Janelid
patent: 3866058 (1975-02-01), Bernkastel
patent: 3986339 (1976-10-01), Janelid
patent: 4147204 (1979-04-01), Pfenninger
patent: 4343569 (1982-08-01), Schwarzenbach
patent: 4355923 (1982-10-01), Schwarzenbach

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