Method for operating flexible powering frequency changing regulating speed control apparatus of direct control oil pumping unit

Abstract

This invention discloses an operation method for a soft drag frequency conversion adjusting control device of a direct-control pumping unit including a frequency converter and a control device and the control device includes a test module, a key module, a central processing module, a display module, an output module and a control volume input module circuit, among which, the test module and the key module circuit send the test signals of current and voltage and key orders to the CPU, which outputs or displays the result and display volume and converts them to analog signals to be sent to the analog control input end of the converter, the analog volume input module circuit has two output ends, one of which is connected with the CPU, the other with the output module circuit, the CPU sends the output analog signals and 0-10V analog signals output by a potentiometer to the converter to realize the conversion control to drag motors.

Description

technical field [0001] The invention relates to a control device and method of an electromechanical transmission device, which is specially used in a frequency converter driven by a pumping unit in an oil field. Background technique [0002] At present, the pumping unit is rigidly dragged, and the system motion is independent of the load, so that the donkey head motion is close to the rigid simple harmonic motion. The peak torque of the reducer is large, the torque imbalance is high, the impact load is large, and the overall dynamic performance is poor. . It shows that the output power of the motor varies in a large range, but the average power is relatively small. In order to meet the needs of this specific load, when selecting the rated power of the motor, it is necessary to meet the principle of the maximum power of the pumping unit. As a result, the motor has low operating efficiency and great energy waste, which increases the system cost. And the energy-saving effect ...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the load utilization rate of the driving motor of the pumping unit is generally low and the energy waste is large, and the CHMOS high-performance 16-bit single-chip microcomputer 80C196KC technology is used to detect the frequency converter of the pumping unit in real time The input power or output power of the motor can be adjusted in real time online, and the drag characteristic curve of the artificial pumping unit is artificially constructed to make it approach to the average power value as much as possible, so as to achieve a stable power change, reduce the maximum power, and increase the minimum power, thereby The purpose of reducing the rated power of the motor and improving the working efficiency of the system

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