Mechanical energy storage pumping unit without derrick

Abstract

The invention relates to a mechanical energy storage oil pumping unit without a headframe. The technical scheme disclosed by the invention is described as follows: two ends of a horizontal fixed shaft are fixedly connected with a support frame, a bearing is arranged on the horizontal fixed shaft arranged close to the inner side of the support frame, the exterior of the bearing is respectively connected with a driving wheel and a braking wheel, a roller is fixedly connected with the inner sides of the driving wheel and the braking wheel and is internally provided with a rigid roll-up spring, the inner end of the rigid roll-up spring is fixedly connected with the horizontal fixed shaft, the outer end of the rigid roll-up spring is fixedly connected with the inner wall of the roller, a hauling cable is connected with the outer wall of the roller, a motor output wheel is connected with a drive wheel, and a motor is a bidirectional adjustable speed motor. According to the mechanical energy storage oil pumping unit without the headframe,disclosed by the invention, because roll-up spring energy storage is adopted to replace a balancing weight to adjust the loading balance of the upper and lower strokes of the oil pumping unit, the oil pumping unit is relatively stable in running process, and the motor is relatively smooth to run, so that the consumption of the motor is reduced, electrical energy is saved, and the headframe is also saved. Compared with the prior art, the mechanical energy storage pumping unit without the headframe has the advantages of simple structure, low cost, high efficiency and convenience for use.

Description

technical field [0001] The invention relates to the field of oil production engineering machinery, in particular to a mechanical energy storage pumping unit without a derrick in the pumping unit. Background technique [0002] At present, there are two types of reciprocating pumping units used in oil production in oilfields. One is the kowtow type or beam pumping unit, which is mainly composed of a derrick, a beam, a counterweight, a traction rope, a gearbox, a motor, and a motor controller. The other type is the vertical pumping unit, especially the belt pumping unit, which is mainly composed of a vertical derrick, a wide belt, a pulley, a counterweight, a reduction box, a It is composed of direction mechanism, motor, motor controller and brake mechanism. The reciprocating pumping unit carries a large load during the upward movement (lifting oil), and releases the load when it descends. This requires the pumping unit to be equipped with weight blocks to solve the problem of...

AI Technical Summary

Problems solved by technology

The reciprocating pumping unit has a large load during the upward (lifting) process, and releases the load when it is downward, which requires the pumping unit to be equipped with weight blocks to solve the problem of unbalanced load

Since the weight of the counterweight itself cannot be adjusted, and the load of the up and down strokes of the pumping unit is constantly changing, this causes the motor load to be unstable, the loss is serious and the energy saving is not utilized.

The other two types of pumping units need to be equipped with a special derrick and a larger base, and their structures are complex and occupy a large area.

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