Belt and steel wire rope combined traction digitized energy-saving pumping unit

Abstract

A belt and steel wire rope combined traction digitized energy-saving pumping unit is composed of a machine frame, an upper platform, a motor, a brake system, a traction system, a balance weight system, a control system, a safety mechanism and a folding abdicating mechanism. The motor is a low-rotating-speed high-torque rare-earth permanent magnet synchronous motor with an outer rotor, belt drive wheels are coaxial with the motor and arranged on the two sides of the motor, the lower end of a front belt and the lower end of a rear belt are in the opposite winding directions and wound on a motor drive wheel, the upper ends of the belts are connected with steel wire ropes through connecting devices, the other ends of the two steel wire ropes are connected with a suspension point load and a balance weight respectively, and therefore the traction system is obtained. The motor rotates forward and backward so that the pumping unit can reciprocate, the forward rotation and backward rotation of the motor and the running speed of the motor are controlled by the control system according to a digitized program, the brake system is arranged on the outer edge of the outer rotor of the motor, and the folding abdicating mechanism is arranged on the front side of the upper platform. The pumping unit saves energy, and is environmentally friendly, safe and reliable, and labor intensity of workers is lowered.

Description

technical field [0001] The invention relates to a pumping unit in oil field petroleum machinery, in particular to a beamless pumping unit in petroleum oil production machinery. Background technique [0002] Known pumping unit has beam pumping unit and beam pumping unit without beam at present. The former is a traditional pumping unit, which has been used for more than 100 years and has the advantages of being durable. However, the large horse-drawn trolley has a long transmission path, low mechanical efficiency, high energy consumption, and difficult parameter adjustment. It is not suitable for long-stroke and low-stroke occasions. The latter is the beamless pumping unit developed successively by relevant R&D personnel in combination with the actual situation of the oil field in the past ten years. At present, there is an intelligent wide-belt pumping unit (patent number: 200620085856.4) on the market. This pumping unit has long strokes and low stroke times, and is suitable...

AI Technical Summary

Problems solved by technology

However, the power still uses the electric motor of the same specification as the beam pumping unit, and it still belongs to the big horse-drawn trolley

And there is a set of cumbersome mechanical reversing mechanism, which has low efficiency and high noise

The transmission mechanism still uses a gearbox, and the gearbox is placed on the ground, so it is easy for criminals to steal the lubricating oil. If the stolen lubricating oil is not found in time, it is easy to cause the bearing to burn, and eventually the gearbox will be scrapped.

In addition, the belt vibrates and vibrates in case of wind, which poses a potential safety hazard.

Wellhead operations need to move the whole machine backwards, which is inconvenient

Difficult maintenance in case of failure, high cost of the whole machine and other defects

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