Beam-pumping unit crank self-balancing device

Abstract

The invention provides a beam-pumping unit crank self-balancing device comprising a balance weight, a nut, a lead screw, a guide bench, a deceleration motor and a control cabinet. The deceleration motor is connected to the lead screw; the lead screw is engaged with the nut; the nut is connected with the balance weight; the balance weight and the guide bench move in a cooperative way; the guide bench is connected to a crank of the beam-pumping unit; and the control cabinet is connected to the deceleration motor and collects operation power of the beam-pumping unit motor to achieve a balance adjusting amount. The deceleration motor is started according to the balance adjusting amount; the deceleration motor drives the lead screw to rotate; the nut pushes the balance weight to slide along the guide bench; and balance can be adjusted when relative displacement of the balance weight and the crank of the beam-pumping unit. The beam-pumping unit crank self-balancing device can achieve intelligent adjustments for beam-pumping unit balance; pumping efficiency can be improved and onsite labor intensity can be reduced; and service life of the pumping equipment can be prolonged.

Description

technical field [0001] The invention relates to the field of oil exploitation technology research, in particular to a crank self-balancing device of a beam pumping unit. Background technique [0002] In oil extraction, the beam pumping unit is a commonly used mechanical oil recovery equipment in the oil field. In order to reduce the motor power and the output torque of the reducer, and reduce the force on each transmission part of the pumping unit, it is necessary to install the pumping unit on the crank or beam Add counterweight to balance well load. Since the oil well load will change with the well conditions, the balance weight also needs to be adjusted frequently. Conventional beam pumping units are mostly adjusted manually, which has problems such as low adjustment accuracy and heavy adjustment workload. For this reason, we have invented a new crank self-balancing device for beam pumping units, which solves the above technical problems. Contents of the invention [...

AI Technical Summary

Problems solved by technology

Since the oil well load will change with the well conditions, the balance weight also needs to be adjusted frequently. The balance of conventional beam pumping units is mostly adjusted manually, which has problems such as low adjustment accuracy and heavy adjustment workload.

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