Dynamic pumping unit balance adjusting device

Abstract

The invention provides a dynamic pumping unit balance adjusting device and belongs to the technical field of umping 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, liquid volume measurement devices, communicating pipe liquid lever meters and a controller. 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 two liquid storage tanks are identical in volume, the lower portions are communicated through the liquid guiding pipe, and the tops of the tanks are communicated through the air guiding pipe. The communicating pipe liquid levers are installed outside the two liquid storage tanks, and the liquid volume measurement devices are installed inside the two tanks. The electric control valve and the bidirectional water pump are installed on the liquid guiding pipe, the controller controls work to make liquid flow between the two liquid storage tanks, and dynamic pumping unit balance adjustment is achieved. The device performs pumping unit balance adjustment in a shutdown state and a non-shutdown state and has the advantages of being simple and reliable in structure, accurate and rapid to adjust, wide in application range, convenient to operate, lower in cost, convenient to maintain and the like.

Description

technical field [0001] The invention relates to a balancing device for an oil pumping unit, in particular to a dynamic balancing device for an oil 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 device 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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