Beam-pumping unit

Abstract

The invention provides a beam-pumping unit which comprises a base, a machine frame, a support, a crank, a driving device and a walking beam. The machine frame and the support are both installed on the base, the driving device is installed on the machine frame, the output end of the driving device is connected with a first gearbox, the output end of the first gearbox is connected with a driving gear, a second gearbox is arranged on the machine frame, the input end of the second gearbox is provided with a driven gear matched with the driving gear, the crank is installed on an output shaft of the second gearbox, a connecting rod is hinged to the crank, the other end of the connecting rod is hinged to one end of the walking beam, the other end of the walking beam is provided with a horse head, the walking beam is hinged to the support, and a vibrator is arranged at the connecting position of the walking beam and the support. The beam-pumping unit is simple in structure, convenient to use and install, simple to operate, low in cost, high in working efficiency, low in energy consumption, wide in application range, long in service life, safe and reliable, effectively reduces stroke frequency, and meets adopted production requirements.

Description

technical field [0001] The invention relates to a beam pumping unit. Background technique [0002] At present, beam pumping units are mostly used in oil production in oilfields. In order to improve mechanical efficiency, oil well pumps are often produced with long stroke and low stroke parameters. In oil production production, in order to realize the smooth downward movement of the sucker rod, the stroke frequency must also be reduced. , so that the down of the sucker rod is synchronized with the operation of the pumping unit. The existing low-stroke adjustment method is generally to reduce the diameter of the motor pulley and increase the reduction ratio, but the motor pulley should not be too small, otherwise it will not be able to transmit normally. Therefore, reducing the number of strokes by adjusting the pulley is limited, and cannot meet the requirements of low stroke times. Sometimes a frequency converter or a two-speed motor is used to adjust the stroke frequency ...

AI Technical Summary

Problems solved by technology

The existing low-stroke adjustment method is generally to reduce the diameter of the motor pulley and increase the reduction ratio, but the motor pulley should not be too small, otherwise it will not be able to transmit normally.

Therefore, reducing the number of strokes by reducing the pulley is limited, and cannot meet the requirements of low stroke times.

Sometimes a frequency converter or a two-speed motor is used to adjust the stroke frequency on site to make the stroke frequency of the pumping unit reach the required stroke frequency. Difficult to promote

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