METHOD OF OPERATION OF PUMP-EJECTOR PLANT AND MULTI-STAGE PUMP-EJECTOR PLANT FOR REALIZATION OF THIS METHOD Russian patent published in 1999 - IPC

FIELD: pumping out and compression of various gaseous media. SUBSTANCE: liquid working medium is bypassed from second-separator to first-stage separator wherefrom it is directed to pump inlet which is connected to first-stages separator. Both separators are communicated by means of U-shaped pipe line forming hydraulic seal. Height of U-shaped pipe line above level of liquid working medium in second-stage separator is no less than height of column of liquid formed in U-shaped pipe line of second-stage separator. According to another version, second-stage separator is provided with level gauge. Pump inlet is connected to first-stage separator. Both separators are brought in communication by means of pipe line fitted with liquid medium bypass regulator connected to level gauge. EFFECT: increased productivity and enhanced operational reliability. 7 cl, 1 dwg