Novel double-chain oil sucking machine

Abstract

The invention relates to an oil sucking machine, in particular to a novel double-chain oil sucking machine. The novel double-chain oil sucking machine comprises reversing wheels, balancing weights, chain wheels, chains, screw bolt rolling wheel and rolling needle bearings, an oil sucking rod, a reversing frame and steel wire ropes, wherein each steel wire rope is paved on the corresponding reversing wheel; one end of each steel wire rope is connected with the reversing frame, and the other end of each steel wire rope is connected with the corresponding balancing weight; the lower surface of the reversing frame is connected with the oil sucking rod; a bearing part of each screw bolt rolling wheel and rolling needle bearing is in contact with the reversing frame; a screw bolt of each screw bolt rolling wheel and rolling needle bearing is fixedly connected onto a pin shaft of the corresponding chain; the chains cover the upper chain wheel and the lower chain wheel; the reversing frame is provided with a U-shaped groove; a guide rail is arranged in the groove; each screw bolt rolling wheel and rolling needle bearing can roll on the guide rail; and the two lower chain wheels are connected with an electric motor through a chain transmission device. The novel double-chain oil sucking machine has the advantages that the stroke is long; the load is great; the oil sucking efficiency is high; the reversing impact of the oil sucking machine is small; the service life of the reversing frame is long; and the adaptability is high.

Description

technical field [0001] The invention relates to an oil pumping unit, in particular to a novel double chain oil pumping unit. Background technique [0002] For a long time, beam pumping units have been mainly used in my country's oilfield development. Although beam pumping units are durable, they have low operating efficiency and high energy consumption, which cannot meet the development needs of "energy saving and consumption reduction". Moreover, in our country, it is difficult for conventional pumping units to achieve long stroke and large load, so there is an urgent need for a double-chain pumping unit with advantages such as long stroke, large load, high efficiency, and strong adaptability. The force point at the special chain link of the oil pump is not in the same plane as the sucker rod, which causes a large shear force on the reversing frame during the reversing process, and the reversing impact of the pumping unit is large, which affects the reversing shelf life. ...

AI Technical Summary

Problems solved by technology

[0002] For a long time, beam pumping units have been mainly used in my country's oilfield development. Although beam pumping units are durable, they have low operating efficiency and high energy consumption, which cannot meet the development needs of "energy saving and consumption reduction".

Moreover, in our country, it is difficult for conventional pumping units to achieve long stroke and large load, so there is an urgent need for a double-chain pumping unit with advantages such as long stroke, large load, high efficiency, and strong adaptability. The force point at the special chain link of the oil pump is not in the same plane as the sucker rod, which causes a large shear force on the reversing frame during the reversing process, and the reversing impact of the pumping unit is large, which affects the reversing shelf life

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