Dynamic and automatic pumping unit balance adjusting device

Abstract

The invention provides a dynamic and automatic pumping unit balance adjusting device and belongs to the technical field of pumping unit balance adjustment. The device comprises a first liquid storage tank, a second liquid storage tank, a liquid guiding pipe, an air guiding pipe, an electric control valve, a bidirectional water pump, a current measurement module, a master control module, a display module and a communicating module. The first liquid storage tank is fixed to the vicinity of the tail portion of a pumping unit walking beam, the second liquid storage tank is fixed to the vicinity of a horse head on the pumping unit walking beam, the lower portions of the tanks are communicated through the liquid guiding pipe, and the tops of the tanks are communicated through the air guiding pipe. The current measurement module measures the current of a motor in real time and sends the current to the master control module to calculate the balance degree of a pumping unit, the master control module controls the work of the electric control valve and the bidirectional water pump installed on the liquid guiding pipe according to the balance degree change in real time to make liquid flow between the two liquid storage tanks, and dynamic and automatic pumping unit balance adjustment is achieved. The communicating module gives out an alarm in an abnormal state. The device can automatically adjust the balance of the pumping unit in real time and make the balance degree always kept at the best level.

Description

technical field [0001] The invention relates to a balancing device for a pumping unit, in particular to a dynamic automatic balancing device for a pumping unit. It belongs to the field of pumping unit balance adjustment. Background technique [0002] Petroleum is an important primary energy source related to national livelihood. At present, the main equipment for oil extraction in oilfields is the pumping unit. At present, beam pumping units are mostly used in major oilfields. The structural composition of the beam pumping unit includes donkey head, beam, beam, connecting rod, crank, balance device, base, reducer, motor and so on. [0003] The oil production process of the pumping unit is divided into an upstroke and a downstroke. During the upstroke, the motor lifts the donkey head, the sucker rod string and the liquid in the well by doing work, and the motor works in the motor state; during the down stroke, the donkey head, the sucker rod string and the liquid in the we...

AI Technical Summary

Problems solved by technology

However, this invention only installs a liquid storage tank at the end of the beam, so it can only perform unidirectional balance adjustment to increase the side weight of the counterweight. When the imbalance is caused by the counterweight being heavier than the suspension point load, the device Unable to adjust the balance; the catheter extends from the fixed end on the ground to the moving end at the end of the beam, and reciprocates up and down with the liquid storage tank, which is easy to be damaged or damaged in long-term operation; the liquid storage tank is an open structure, It is easy to cause the evaporation and pollution of the liquid; the adjustment weight is equal to the liquid volume delivered by the pump, and the liquid utilization rate is not high

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