Crank balance adjusting device based on gravity

Abstract

The invention discloses a crank balance adjusting device based on gravity, and belongs to the field of oil field exploitation. The device comprises a data processing module and a gravity balance adjusting module. The data processing module obtains the balance degree when an oil pumping unit works and sends out a command when the balance degree exceeds the preset range, the balance adjusting moduleworks, and the balance degree is adjusted into the preset balance degree range. The gravity balance adjusting module generates axial sliding on a crank through the gravity of balance blocks, the gravity of the balance blocks changes relative to the torque of a supporting point, and the supporting point is at the position of an output shaft. The two balance blocks are connected through a connecting rod mechanism, synchronous adjustment is achieved, a stepping motor drives a bevel gear set, a lead screw is driven to rotate and connected with a limiter, limiter displacement is changed, the limiter is utilized for axial limiting of connecting rods on the balance blocks, accordingly, axial sliding displacement of the balance blocks is limited, and crank balance adjustment is achieved. By meansof the crank balance adjusting device, the labor intensity and management difficulty are lowered, and time and labor are saved.

Description

technical field [0001] The invention relates to the field of oil field exploitation, in particular to a gravity-based crank balance adjustment device for a beam pumping unit. Background technique [0002] In oil extraction, when the oil field development reaches the middle and late stages, the oil field cannot continue to use self-spraying production, and mechanical oil recovery methods must be adopted. The beam pumping unit is the most common equipment, and its quantity accounts for more than 80% of the oil production lifting equipment. It consists of a beam, a donkey head fixed at one end of the beam, a sucker rod fixed on the donkey head, a motor, a reduction box and a crank. The beam pumping unit can be driven by the motor through the reduction box to rotate the crank at low speed, and the crank drives the beam to swing, and makes the donkey head reciprocate up and down with the beam and drives the sucker rod to reciprocate up and down, so that Pump the oil out of the w...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the disadvantages of adjusting the crank balance weight in the prior art, such as long time-consuming, high labor intensity, difficult management, and low precision, the present invention provides a crank adjustment device based on gravity. produce sliding, so as to achieve the purpose of adjustment

Images