WELL PUMPING UNIT Russian patent published in 2003 - IPC

FIELD: pumping facilities. SUBSTANCE: invention can be used in pumping units designed for water wells. Proposed pumping unit contains centrifugal pump, water lifting tubing, flexible measuring linkage, ring float telescopically coupled with tie-rods. Tie-rods are rigidly connected with water lifting tubing in lower part. Flexible measuring linkage passed over guide roller is connected by one end with ring float and by other end, with counterweight. Pumping unit is furnished additionally with ring float rigidly connected with water lifting tubing and installed under ring float. EFFECT: reduced labor input, simplified lowering and lifting operations of pumping units to be set at optimum dynamic level or for replacement of centrifugal pump. 5 cl, 1 dwg