FIELD: oil extracting industry. SUBSTANCE: device has centrifugal pump, wire-wrapped screen and electrical drive, which are mounted under centrifugal pump. Inside perforated branch pipe of wire-wrapped screen a magnetic activator is mounted. It is concurrently a magnetic conductor for this magnetic activator. Also provided is cylindrical cover. Its inner surface forms a radial space together with outer surface. Upper end of cylindrical cover is hermetically fixed to the pump above its receiving portion. Lower end of cover is fixed to lower end of electrical drive. EFFECT: higher reliability of inter-cleaning and inter-maintenance periods operation of pumping devices during intensive oil extraction under complicated conditions. 3 cl, 2 dwg
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Authors
Dates
2004-06-10—Published
2002-08-20—Filed