Energy-saving numerically-controlled oil pumping unit

Abstract

The invention discloses an energy-saving numerically-controlled oil pumping unit. The energy-saving numerically-controlled oil pumping unit comprises a rack located on a Christmas tree of an oil well; a motor and an oil tank are arranged on the rack; the motor is connected with a numerical control device; a transmission mechanism used for driving an elevator to move up and down is also arranged on the rack; the transmission mechanism is connected with the elevator; an energy accumulator used for storing and releasing energy is fixedly arranged on the rack; the outlet end of the energy accumulator is connected with an energy accumulation hydraulic cylinder through a pipeline; the top end of the piston rod of the energy accumulation hydraulic cylinder is connected with energy accumulation chain wheels; energy accumulation chains are meshed with the energy accumulation chain wheels; one end of each energy accumulation chain is fixedly connected with the rack; and the other end of each energy accumulation chain is connected with the top end of the elevator. By adopting the technical scheme, remote monitoring and operation are realized; personal safety of workers is ensured; the working efficiency is improved; the size is small; the weight is light; raw materials are saved; and meanwhile, assembly and conveying are convenient.

Description

technical field [0001] The invention relates to an oil pumping unit, in particular to an energy-saving numerical control oil pumping unit. Background technique [0002] At present, with the continuation of oilfield exploitation, the permeability of oil wells decreases year by year, and the liquid level gradually decreases, resulting in an increasing load on the oil well pumping unit. The beam pumping unit is commonly used at present, but with the The increasing load leads to high energy consumption and electricity consumption, which increases the mining cost, and its large volume and weight affect the popularization and use. In addition, although the existing numerical control pumping units have improved in terms of power, motion performance, weight, size and other indicators, and the stroke and stroke times can be controlled and adjusted at any time according to needs, but rely on the motor to drive the hydraulic cylinder to drive the chain, so the force is relatively large...

AI Technical Summary

Problems solved by technology

[0002] At present, with the continuation of oilfield exploitation, the permeability of the oil well decreases year by year, and the liquid level gradually decreases, resulting in an increasing load on the oil well pumping unit. The beam pumping unit is commonly used at present, but with the The load is getting bigger and bigger, which leads to high energy consumption and electricity consumption, which increases the mining cost, and its large size and weight affect the popularization and use

In addition, although the existing numerical control pumping units have improved in terms of power, motion performance, weight, size and other indicators, and the stroke and stroke times can be controlled and adjusted at any time according to needs, but rely on the motor to drive the hydraulic cylinder to drive the chain, so the force is relatively large. Large, not energy-efficient, and difficult to manufacture and maintain

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