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Simple pendulum variable-pitch beam-balanced pump

A beam pumping unit and single pendulum technology, which is applied in mechanical equipment, non-electrical variable control, and production of fluids, etc., can solve the problem of not being in the best energy-saving state of the pumping unit, and achieve the effect of improving work efficiency.

Inactive Publication Date: 2009-11-11
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inherent four-bar linkage mechanism of the beam pumping unit, the working load changes approximately in a sinusoidal curve. Through the crank balance method, the load curve basically conforms to the sinusoidal curve change trend; by adding a balance block on the beam, the load changes The curve is relatively smooth, but since the beam balance weights currently used are all fixed or simply changed, the pumping unit cannot be in the best energy-saving state

Method used

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  • Simple pendulum variable-pitch beam-balanced pump

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Embodiment Construction

[0008] Such as figure 1 As shown, the present invention includes a rope hanger 1, a donkey head 2, a beam 3, a rack guide rail 4, a single pendulum support 5, a motor 6, a swing bar 7, a balance weight 8, a support 9, a connecting rod 10, a crank 11, Reducer 12, motor 13, controller 14, braking device 15, base 16.

[0009] The present invention is obtained by transforming the conventional post-mounted beam pumping unit. A single pendulum device is added to the upper end of the beam. The motor 6 can reciprocate along the rack guide rail 4 to drive the balance weight 8 to swing back and forth.

[0010] During the downstroke, the balance weight 8 swings to the right end (facing the drawing) gradually, so that an extra load can be applied to the motor 13, thereby preventing the donkey head 2 from doing work on the motor 13. When the suspension point of donkey head 2 is at the bottom dead center, the balance weight 8 swings to the far right, so that the moment produced by the bal...

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Abstract

The invention relates to a single-pendulum torque-variable balance beam pumping unit. There is a single-pendulum device at the upper end of the beam. A rack guide rail is fixed in the middle of the support of the single-pendulum device. A motor is fixedly connected to the middle of the swing rod. The motor can It moves back and forth on the rack guide rail; it also includes a controller, which detects the load through the controller, controls the motor, and then controls the hem, so that the balance load generated by the hem balance weight can change in real time according to the balance load required by the motor, effectively It plays the role of "shaving peaks and flat valleys", keeps the final load of the motor constant, greatly improves the efficiency of the motor, and has a remarkable energy-saving effect.

Description

technical field [0001] The invention relates to oil pumping equipment used in oil exploitation, in particular to a single pendulum variable moment balance beam pumping unit. Background technique [0002] At present, most oil wells in my country have entered the stage of mechanical production. The conventional beam pumping unit is widely used in various oil fields due to its simple structure, good reliability and easy maintenance. With the increase of its quantity, its shortcoming of high energy consumption becomes more and more prominent, so the energy-saving transformation of the beam pumping unit has become a main research direction at present. Due to the inherent four-bar linkage mechanism of the beam pumping unit, the working load changes approximately in a sinusoidal curve. Through the crank balance method, the load curve basically conforms to the sinusoidal curve change trend; by adding a balance block on the beam, the load changes The curve is relatively smooth, but...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00F16H21/00G05D3/00
Inventor 康龙云赵海博刘光旭
Owner SOUTH CHINA UNIV OF TECH
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