Torque balancing gearbox and torque balancing pumping unit

Abstract

The invention relates to a torque balancing gearbox which comprises a gearbox body. One end of a gearbox input shaft is connected with a motor, and a first gear is mounted on the input shaft. Gear shafts are mounted in the gearbox body, and comprise the first gear shaft and the second gear shaft. A second gear and a third gear are mounted on the first gear shaft. The second gear is engaged with the first gear. A fourth gear is mounted on the second gear shaft, and the third gear is engaged with the fourth gear. The two ends, stretching out of the gearbox body, of an output shaft are each provided with a first crank balance weight. The torque balancing gearbox is characterized in that the two ends, stretching out of the gearbox body, of the second gear shaft are each provided with a second crank balance weight; and a first non-circular gear is mounted on the output shaft, and a second non-circular gear engaged with the first non-circular gear is further mounted in the gearbox body. A torque balancing pumping unit is mounted on the torque balancing gearbox. Compared with an existing beam-pumping unit, the beneficial effects of being balanced in torque, small in net torque and low in energy consumption are achieved.

Description

technical field [0001] The invention relates to oil exploitation equipment, in particular to a torque balance gear box and a torque balance pumping unit. Background technique [0002] The beam pumping unit in the petroleum industry is mainly composed of donkey head, beam, connecting rod, crank mechanism, gearbox, power equipment and auxiliary equipment. When working, the transmission of the motor passes through the gearbox, crank connecting rod The mechanism becomes the up and down movement of the donkey's head, and the donkey's head drives the plunger of the downhole oil pump to move up and down through the steel wire rope, so that the crude oil in the well is continuously pumped out of the wellbore. [0003] The beam pumping unit has the characteristics of reliable performance, simple structure, convenient operation and maintenance, etc., so it is widely used in oil extraction. Its outstanding disadvantages are that the pumping unit consumes a lot of energy, its work effi...

AI Technical Summary

Problems solved by technology

Its outstanding disadvantages are that the pumping unit consumes a lot of energy, its work efficiency is low, and its operation is not balanced enough. During operation, its balance torque and load torque alternately change, and the net torque generated by the superposition of the two also alternately changes, which is very unbalanced. , this alternating net torque acts on the motor through the variable speed gearbox, which will cause the instantaneous current of the motor to have a large fluctuation, and will also generate a lot of useless work, resulting in a large energy consumption

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