Novel pumping machine

Abstract

A novel pumping unit comprises a control cabinet, a switch reluctance motor, a speed-changer, a brake, a cylinder, a steel cable, a fixed block, a movable pulley, a fixed block holdfast, a polished rod eye, and a bracing frame. The control cabinet, the reluctance motor, the cylinder, and the bracing frame are arranged and placed on a prying block on the earth surface, the upper end of the bracing frame is provided with the fixed block, the movable pulley or a group of movable pulleys are arranged on the polished rod eye, the fixed block holdfast and the polished rod eye are connected in a whole. The control cabinet controls a circuit to connect with a switch reluctance motor circuit, a reluctance motor shaft is connected with an input shaft of a clutch, an output shaft of the clutch is connected with a cylinder shaft, the end of the steel cable on the cylinder is fixed on a fixed block frame through the fixed block and the moveable pulley, or which is fixed on the fixed block holdfast through an energy storage spring, or is connected with a balance box through the fixed block which is arranged on the fixed block holdfast, and the polished rod eye is connected with a polish rod through a holding latch. The invention has simple structure, lower cost, and electric energy saving.

Description

1. Technical field [0001] The invention relates to a novel pumping unit for mechanical oil recovery in oil fields. 2. Background technology [0002] At present, there are many oil production equipment used in oil fields, such as beam pumping units, chain pumping units and vertical drum pumping units. These pumping units have been popularized and applied in oil fields to varying degrees, especially beam pumping units. Most of them are used, but there are many mechanical transmission links, large mechanical losses, more steel materials, troublesome stroke adjustment and stroke times, and inconvenient management. The latter two pumping units solve the troublesome problems of stroke adjustment and stroke times and long-stroke oil production Problem, but the transmission equipment of the operating equipment is set on the elevated platform, the maintenance operation is very inconvenient, and it is not very safe. It is difficult to adjust the balance, and more steel is used. 3. C...

AI Technical Summary

Problems solved by technology

[0002] At present, there are many oil production equipment used in oil fields, such as beam pumping units, chain pumping units and vertical drum pumping units. These pumping units have been popularized and applied in oil fields to varying degrees, especially beam pumping units. Most of them are used, but there are many mechanical transmission links, large mechanical losses, more steel materials, troublesome stroke adjustment and stroke times, and inconvenient management. The latter two pumping units solve the troublesome problems of stroke adjustment and stroke times and long-stroke oil production Problem, but the transmission equipment of the operating equipment is set on the elevated platform, the maintenance operation is very inconvenient and not very safe, the adjustment balance is difficult to adjust, and more steel is used

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