Heavy long-travel pumping unit

• Main Authors: DECHENG LIU, XUEFENG WANG, JINGMIN LI, HONGCHENG LI, XIAOGANG WANG, CONGQIANG XU, TINGFU YU, WENFU LI, JING TIAN
• Format: Patent
• Language: English
• Published: 01.02.2006
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model relates to a heavy long-travel oil pumping machine used for pumping oil in an oil field. The utility model is mainly composed of a driving device which is composed of an electric machine and a speed reducer, a reversing device which is composed of a chain link and a connecting rod, an abdication device which is composed of a hoisting sheave and an abdication screw rod, a balancing device which is composed of a steel cable, a belt and a balance box, and a dust-proof device which is composed of a dust-proof adhesive tape and a dust-proof guide wheel. When the utility model runs, the electric machine runs, which drives two driving wheels on the speed reducer to rotate along the same direction. The connecting rod and the balance box are driven by the chain link to move from top to bottom. The balance box is connected with an oil pumping rod through an adhesive tape of the steel cable, which drives the oil pumping rod to move from top to bottom in a reciprocating mode and oil is pumped. The utility model solves the problems that the stroke is short, the bearing capacity is low, the effect on pumping oil is poor, oil production is low, the dosage of steel is large and the fabrication cost is high existing in the prior art. The machine can be widely used for pumping oil in an oil field.