PUMPING SYSTEM Russian patent published in 2008 - IPC F04B9/02 

FIELD: oil and gas producing industries; high-pressure systems.

SUBSTANCE: proposed pumping system contains mounting plate with posts, and base on which drive with motor and reduction gear is mounted from below. Guide bushing is installed from top. System is furnished with device to prevent rotation of bushing but provide its axial movement, housing, plunger, spindle connected with plunger and provided with thread, spindle nut installed on spindle, fixed cylinder with hole to accommodate plunger and pressure, volume and temperature transmitters. Housing is secured on plate mounted on posts and provided with central hole to which at level of spindle nut, rolling guides are secured for displacement which provide alignment of guide bushing. Joint of plunger and spindle is split, for instance, in form of fingered bushing, being arranged in adapter installed between housing and fixed cylinder. Device designed to prevent rotation of bushing is made in form of four antifriction bearings, each being secured on bracket and arranged in slot of cup which accommodates motor and is connected to base. Each bracket is attached to ring fastened to plate by studs.

EFFECT: provision of quick and easy replacement of plunger, reduced runout of spindle nut, improved stability of pumping system in operation.

5 cl, 1 dwg