WELL PUMP DRIVE Russian patent published in 2009 - IPC F04B47/02 F04B53/00 

FIELD: engines and pumps.

SUBSTANCE: device is designed for application in the field of oil production by well pumps. Drive comprises guide link shaft having gear and drum joined to electric motor, annular body installed on support and having base and cover with nozzle joined to pump-compressor pipe. Cylindrical protrusion is arranged on free end of guide link shaft gear. Long slot is arranged on cylindrical surface of cylindrical protrusion at the end. Gear wheel is installed parallel to gear and at the same distance from base axis. It is arranged with dimensions and cylindrical protrusion similar to dimensions and cylindrical protrusion of gear. Concave gear ring is installed inside body, and convex gear ring is installed on cover. Teeth of convex and concave gear rings are engaged with gear and gear wheel teeth. Coaxial cartridges are arranged on ends of convex and concave gear rings. At least two brackets are rigidly fixed and installed on internal flat surface of base perpendicular to this surface. Arc-shaped concave thrust is fixed at free ends of brackets, at that it is arranged with internal diametre equal to external diametre of convex gear ring cartridge external diametre, and internal diametre equal to sum of external diametre of this cartridge plus double depth of long slot. Another arc-shaped convex thrust is installed and fixed to free ends of brackets, and it has external diametre equal to internal diametre of concave gear ring cartridge. There is plank installed between arc-shaped thrusts and body cover, and it has long slot in the form of, for instance, dovetail. Drive is equipped with detector of concave and convex gear ring rotations number. Arc-shaped thrusts of gear and gear ring cylindrical protrusions are separated into two parts. Hinge axis is installed perpendicular to internal end surface of base and is installed in hole arranged in separated end of arc-shaped thrust with inclined surface. Arc-shaped thrusts with inclined surfaces are equipped with fixed joined spring-loaded levers. Free end of every lever contacts with side cylindrical surface and bottom of sprocket hub groove. Base has additional nozzle connected to counterbalance cylinder and equipped with flexible element. Flexible element is fixed by its one end to drum, and by the other - to counterbalance. Additional nozzle is connected to pump-compressor pipe of another well. In order to define place of gear ring installation, with combined apertures of long slots of cylindrical protrusion of gear and cartridge of concave gear ring, gear is turned by 180 degrees to combine apertures of slots of cylindrical protrusion of gear and cartridge of convex gear ring, gear ring convex cartridge is turned to the side of gear wheel axis installation to match line passing along axis of symmetry of cross section of long slot of convex gear ring cartridge, with middle of arc passing along circumference of concave gear ring reference diametre, selected from axis of symmetry of cross section of nearby long slot of concave gear ring cartridge to the side of gear ring installation place, and equal to length of gear reference diametre circumference, afterwards line matched with arc middle is projected to surface of base, and mark is made in the middle between circumferences of reference diametres of concave and convex gear rings on this line.

EFFECT: increased service life of well pump due to provision of electric motor rotation without stops.

6 cl, 17 dwg