PUMP PLANT Russian patent published in 2014 - IPC F04B47/06 F04B17/04 

FIELD: engines and pumps.

SUBSTANCE: invention relates to machine building and can be used for fluid lifting from deep waters. Proposed plant comprises displacement pump and borehole linear gated motor with interconnected movable and stationary parts. Motor stator and its movable part, a runner, are configured to allow reciprocation of the latter relative to stator. Motor interior is communicated with ambient medium via filter and with pump interior via seal fitted between rod and housing. Motor stator has lengthwise through channels made in area between winding outer surface and motor housing inner surface to communicate chambers arranged on the stator both end sides.

EFFECT: longer life, improved thermal mode.

4 cl, 2 dwg