The invention relates to the field of gidromashinostroeniya, in particular rodless pumping devices for extracting oil from an axially reciprocating positive displacement pumps. The rodless pump installation for extracting oil containing suspended on a string of pumping pipe axial piston pump and the rotational drive of the axial piston pump, the latter is provided with a housing in which are formed working chambers, each of which is spring-loaded relative to the housing and arranged to drive reciprocating axial movement of the plunger swash plate, each of the working chambers communicates with the inlet side of the pumping medium in it with the suction side and output therefrom ne ekachivaemoy medium - to the discharge valve and the swash plate mounted in the housing and connected to the shaft of the axial piston pump, between the swash plate and the working chamber is located transverse wall, in which there are sealed relative thereto pushers placed between swash plate and each of the plungers focusing one end in the swash plate and the other end to the plungers, the electric motor used as a drive shaft, mounted axially below the piston pump housing at the top you olnen with the sub for connection with a column pumping pipes,-sub set discharge device with a bursting disc, the housing is provided with a filter made in the form of through holes in the wall of the housing underneath the plungers, the plungers are hollow, the suction valve is arranged in each plunger in its lower part, the discharge a valve positioned above each plunger in the housing, the output of each pressure control valve communicates with the sub, between the axial piston pump and motor set expansion compensator I have oil, and the cavity of the latter and communicated with her body cavity axial piston pump below the transverse wall and the cavity filled with motor oil. The result is expansion of the arsenal of technical means and thereby increasing the reliability of the axial piston pump.
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