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: 2007-06-06
SOUTH CHINA UNIV OF TECH
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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] As shown in Fig. 1, the present invention comprises rope hanger 1, donkey head 2, beam 3, rack guide rail 4, single pendulum support 5, motor 6, swing bar 7, balance weight 8, support 9, connecting rod 10, Crank 11, speed 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 balance weight 8 is the ma...

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Abstract

The present invention relates to a simple pendulum variable pitch balancing walking-beam pumping unit. It is characterized by that the upper end of walking beam is equipped with a simple pendulum device, in the middle portion of supporting frame of simple pendulum a rack guideway is fixed, in the middle portion of pendulum bar a motor is fixedly connected. Said motor can be reciprocally moved on the rack guideway. Said invention also includes a controller, said controller can be used for detecting load and controlling motor so as to greatly raise efficiency of motor.

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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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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