Dynamic and automatic pumping unit balance adjusting device

A technology of balance device and pumping unit, which is applied in the direction of machines/engines, mechanical equipment, liquid variable capacity machinery, etc. It can solve the problems of inability to adjust the balance of the device, low liquid utilization rate, liquid evaporation and pollution, etc., to achieve The effect of saving electric energy, reducing production and management costs, and improving production efficiency

Pending Publication Date: 2017-06-13
HARBIN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Dynamic and automatic pumping unit balance adjusting device
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Effect test

specific Embodiment 1

[0028] Specific embodiment one: as figure 1 Shown is the non-stop adjustment method using the gravitational potential energy when the electric control valve (5) is used. The electric control valve (5) of the device is installed on the catheter (3). The current measurement module (6) is generally a current transformer, which collects the real-time working current of the motor of the pumping unit and sends it to the main control module (7). The main control module (7) is generally an ordinary single-chip microcomputer and its peripheral circuits. , also includes a relay to control the on-off of the driving power of the electronically controlled valve (5).

[0029] The main control module (7) calculates the upward current and the downward current, and obtains the real-time balance degree of the pumping unit based on this. Compared with the set balance degree, if it exceeds the threshold value, the liquid needs to be pumped from the first liquid storage tank (1 ) to the second l...

specific Embodiment 2

[0033] Specific embodiment two: as figure 2 Shown is the non-stop adjustment method utilizing the electronically controlled valve (5) and the two-way water pump (10). A two-way water pump (10) is installed on the catheter tube (3) of the device, and the electric control valve (5) is installed on the catheter tube (3). The current measurement module (6) collects the real-time working current of the motor of the pumping unit, and sends it to the main control module (7) to calculate the upstream current and the downstream current, so as to obtain the real-time balance degree of the pumping unit and the set balance degree In comparison, if the threshold is exceeded and the liquid volume of the first liquid storage tank (1) needs to be increased, the main control module (7) opens the electronically controlled valve (5), starts the two-way water pump (10), and controls the flow of the two-way water pump (10). The direction of rotation makes the liquid flow from the second liquid s...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B43/12E21B47/009F04B47/14
CPCE21B43/121F04B47/145E21B43/127E21B47/009
Inventor 周封孙瑞郝婷李隆
Owner HARBIN UNIV OF SCI & TECH
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