WELL PUMP STATION Russian patent published in 1994 - IPC

FIELD: pumps. SUBSTANCE: positive displacement blade pump and hydraulic engine are mounted in a common case by a fastening unit in the column of twin pump-compressor pipes mounted one over the other. The hydraulic engine is connected to a land-based pump and an electric motor. The case has a cover in the form of a bell forming a drive medium feed and bleed chamber in which an end distributor is mounted. The bell is axially movable and has a nipple for joining the inner pipe by a bush with a guide conical surface. The upper part of the column has a fastening unit made in the form of inner pipe guides mounted one over the other, and clutches for coupling the outer pipes one to another and to the case. The pipes have ports for passing the drive medium, the upper pipe has a hole with a guide conical surface in which a self-sealed gland is mounted. Channels for bleeding the exhaust and sucked fluid to the interpipe space are made on the outer surface of the engine stator. EFFECT: improved structure. 3 dwg