Pumps – Motor driven – Fluid motor
Patent
1993-07-06
1994-03-22
Bertsch, Richard A.
Pumps
Motor driven
Fluid motor
F04B 1700
Patent
active
052958108
ABSTRACT:
Apparatus for compressing a fluid comprising a tubular, open-ended housing (2) having a suction end (5) and a discharge end (6), a tubular, open-ended rotor (8) rotatably arranged in the housing (2), an annular driver space (17) which is defined between the inner surface of the housing (2) and the outer surface of the rotor (8), an annular seal preventing fluid flow from the annular driver space (17) to the suction end (5), a rotor driver (20) arranged in the annular driver space (17), and a rotor-driven compressor (30) arranged in the tubular rotor (8), wherein the rotor-driven compressor (30) includes a helical screw blade (32) which is secured to the inner surface of the tubular rotor (8), and wherein the pitch of the helical screw blade (32) decreases in the direction of the discharge end (6).
REFERENCES:
patent: 1693102 (1928-11-01), Worthington
patent: 2113213 (1938-04-01), Leonard
patent: 2397139 (1946-03-01), Heaton
patent: 2516442 (1950-07-01), Wolfe
patent: 2726606 (1955-12-01), Davidson
patent: 3221661 (1965-12-01), Swearingen
patent: 3695173 (1972-10-01), Cox
patent: 3771900 (1973-11-01), Baehr
patent: 4025240 (1977-05-01), Matthews
patent: 4684335 (1987-08-01), Goodridge
SPE Paper No. 8245, "Field Testing the Turbo-Lift Production System," by H. Petrie and J. W. Erickson, 1979.
Bertsch Richard A.
Shell Oil Company
Thorpe Timothy S.
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