Pumps – Motor driven – Fluid motor
Patent
1977-01-21
1978-04-04
Husar, C. J.
Pumps
Motor driven
Fluid motor
417424, 415501, F04B 4714
Patent
active
040824829
ABSTRACT:
An articulated, submersible turbine pump for installation in a vertically elongated bottom hole assembly of a well has a flexible shaft and a plurality of rotor elements and stator elements mounted about the shaft in adjacent alternating relationship. Each rotor element has rotatable blades attached to the shaft by a hub and a housing segment surrounding the rotatable blades in outwardly spaced relationship therefrom to provide clearance for rotation. Each stator element has a close fitting hub around the shaft, which serves as a journal bearing, a housing segment outwardly spaced from the hub, and stationary blades attached between the hub and the housing segment. The housing segments are longer than the blades and the hub. Matching conical surfaces are formed at opposite ends of the housing segments to seal adjacent housing segments when axially aligned. An annular relief on the periphery of one of the surfaces permits the housing segments to pivot out of axial alignment when the shaft bends. Axial rotation between the housing segments is prevented by a key and a recess at opposite ends of each housing segment; the key of one segment fits loosely into the recess of the adjacent segment.
REFERENCES:
patent: 1693102 (1928-11-01), Worthington
patent: 1894393 (1933-01-01), Bigelow
patent: 2113213 (1938-04-01), Leonard
patent: 2706451 (1955-04-01), Ortiz et al.
patent: 3758238 (1973-09-01), Erickson et al.
patent: 3847512 (1974-11-01), Brown et al.
patent: 3981626 (1976-09-01), Onal
patent: 4003678 (1977-01-01), David
Erickson John W.
Petrie Harold L.
Husar C. J.
Kobe Inc.
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