Automatic adjusting device for locations of balance blocks of petroleum pumping unit

Abstract

The invention discloses an automatic adjusting device for locations of balance blocks of a petroleum pumping unit. An operating instruction inputting module (12) of the device is connected into a location control module (11), an output signal of an encoder (1) is connected into the location control module (11), the location control module (11) is connected into a servo driving module (10), the servo driving module (10) is connected into a motor (9), an output shaft of the motor (9) is connected with an input end of a worm (13) of a worm gear and worm speed reducer (2), the encoder (1) and the motor (10) are coaxially mounted at a non-input end of the worm (13), and an end of a lead screw (3) is fixedly connected with a balance block (7) via a flange (4). An operating instruction is inputted into the operating instruction inputting module (12) so as to adjust the location of the balance block (7) on a crank (6). The automatic adjusting device can be operated in a running state, is high in adjustment precision, and saves labor and time.

Description

technical field [0001] The invention relates to a position adjustment device for a balance block of an oil pumping unit, in particular to an automatic adjustment device for the position of a balance block of an oil pumping unit using a crank balance block structure. Background technique [0002] At present, the surface equipment for oil production in oilfields is mainly oil pumping units, and the pumping units with crank balance structure account for about 80%. Due to the change of oil pressure and oil volume of formation oil, in order to save energy and improve oil yield, it is necessary to adjust according to the working conditions. Change and adjust the balance of the crank to maintain the balance ratio between the up current and the down current of the driving motor between 80% and 120%. Therefore, adjusting the balance block is a regular work in oil production management. The on-site operation is done manually by at least three people. When the balance rate of the measu...

AI Technical Summary

Problems solved by technology

This method is labor-intensive and time-consuming, and it needs to be operated in a shutdown state, which affects oil well production and oil production efficiency, and there are great experience factors in the adjustment process, so it is difficult to guarantee the accuracy and effect of adjustment

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