Flywheel energy storage oil pumping machine

Abstract

Disclosed is a flywheel energy storage oil pumping machine, comprising an electric motor (1) and a control device (3), and also comprising a rotary spindle (2), a lifting roller (4) for lifting an oil sucker rod, a roller drive wheel (6), an energy adjustment flywheel (7), a transmission (8) and an energy feedback device (9), wherein the lifting roller (4)is sheathed on the rotary spindle (2), and the separation and reunion between the rotary spindle (2) and the lifting roller (4) are achieved via a clutch (5); the roller drive wheel (6) is fixedly connected to the lifting roller (4); and a low-speed end of the transmission (8) is connected to the rotary spindle (2), and a high-speed end is connected to the energy adjustment flywheel (7). The flywheel energy storage oil pumping machine is simple in structure, low in cost, small in size, light in weight, small installation capacity of an electric motor, low in energy consumption, high in efficiency and low in failure rate, and has nearly no pollution in a power grid.

Description

TECHNICAL FIELD[0001]The present invention relates to the technical field of oil production equipment for an oil field, more particularly to a flywheel energy storage oil pumping machine.BACKGROUND[0002]The working principle of an oil pumping machine with a sucker rod is pumping petroleum out from an oil well through the vertical up-and-down movement of the sucker rod. An oil pumping machine with a sucker rod in the prior art generally comprises a speed reducer, a balance system, a reversing device and various mechanical driving devices. The energy transfer way of such an oil pumping machine with a sucker rod is: electric motor-belt wheel-speed reducer-balance system-reversing device-various mechanical driving devices. There are many transfer links, resulting in high energy consumption and serious waste. During the operating of such oil pumping machines, the work done by the oil pumping machines is not uniform due to their structural features. In the up-and-down stroke of such an oi...

AI Technical Summary

Benefits of technology

The present invention provides a flywheel energy storage oil pumping machine with simple structure, small size, lower energy consumption, high efficiency, low failure rate, and no pollution to the power grid. The machine uses a rotary spindle and an energy adjustment flywheel to store and release energy during the pumping process. The energy feedback device controls the speed of the sucker rod during the down stroke to make the down stroke stable and decrease impact. The oil pumping machine does not require a balance system or other essential components of existing oil pumping machines, which simplifies its structure and increases its reliability. The energy feedback device transfers the energy generated during the lowering of the sucker rod to the energy adjustment flywheel and converts it into accelerated rotation to achieve energy storage. The oil pumping machine has a high efficiency, low installed capacity of the electric motor, no pollution to the power grid, low failure rate, and high reliability.

Problems solved by technology

There are many transfer links, resulting in high energy consumption and serious waste.

During the operating of such oil pumping machines, the work done by the oil pumping machines is not uniform due to their structural features.

Therefore, the installed capacity of the electric motor is large, generally multiple times larger than actually required average power, and even above 7 times. Meanwhile, due to the starting characteristics of the electric motor, there is a large impact to the power grid, thereby causing serious pollution to the power grid.

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