A tower type linear pumping unit

Abstract

The present invention proposes a tower-type linear pumping unit, which includes a base and a tower, a driving mechanism, a transmission mechanism, a workover shifting device, and an oil well polished rod; the transmission mechanism includes a driving sprocket, a driven sprocket, a chain, a bell crank, The reciprocating frame, counterweight box, load belt and rope hanger; the driving sprocket and the driven sprocket are connected by a chain, the bellcrank is fixed on the chain, the reciprocating frame is fixedly connected with the bellcrank, and the counterweight box is fixedly connected on the upper end of the reciprocating frame; the load One end of the belt is connected to the upper end of the counterweight box and bypasses the workover displacement device on the top of the tower, and the other end is connected to the rope hanger; the rope hanger is connected to the oil well polished rod. The invention can overcome the problems of time-consuming and labor-intensive workover and displacement of the existing beamless pumping unit, and large impact and vibration during reversing.

Description

technical field [0001] The invention relates to the technical field of pumping units, in particular to a tower-type linear pumping unit with adjustable stroke times used in the field of mechanical oil recovery on the surface of an oil field. Background technique [0002] The pumping unit is an important oil production equipment in the oil field. At present, the beamless pumping units used in the oil field include air-balanced chain machines, wide belt chain machines, etc. These chain-reversing pumping units have large strokes and low stroke times. Advantages, but the mechanical reversing system is complicated, the workover and shifting mechanism is time-consuming and labor-intensive, the manufacturing and maintenance costs are high, and the shock and vibration are large during reversing. The most important thing is that the number of strokes cannot be adjusted or the adjustment is very troublesome. [0003] Moreover, when the pumping unit with chain reversing direction is r...

AI Technical Summary

Problems solved by technology

[0002] The pumping unit is an important oil production equipment in the oil field. At present, the beamless pumping units used in the oil field include air-balanced chain machines, wide belt chain machines, etc. These chain-reversing pumping units have large strokes and low stroke times. Advantages, but the mechanical reversing system is complicated, the workover and shifting mechanism is time-consuming and laborious, the manufacturing and maintenance costs are high, and the impact and vibration are large during reversing

The most important thing is that the number of strokes cannot be adjusted or it is very troublesome to adjust

[0003] Moreover, when the pumping unit with the chain reversing direction is reversing, the counterweight box in the tower and the H steel have a large impact vibration, which seriously affects the normal operation of the pumping unit. In severe cases, the bearing jacket falls off, and the H steel is deformed by the impact. even the pumping unit was knocked down

The vibration damping device of the existing tower pumping unit adopts deep groove ball bearings, the counterweight box is in hard contact with H steel, the bearing capacity is small, the impact resistance is poor, the guide wheel bearing is easily damaged, and the whole machine vibrates when the pumping unit is working normally Big

[0004] In addition, the existing chain-belt pumping unit workover shifting device relies on the assistance of cranes, jacks, trailers and other equipment. For oil fields located in wilderness and inconvenient transportation, it is difficult to carry out workover operations

Images