Chain reversing oil pumping unit

Abstract

The invention relates to the technical field of petroleum equipment, and particularly relates to a chain reversing oil pumping unit. The chain reversing oil pumping unit comprises a rack, a lifting rope assembly, a single chain transmission mechanism and a power device; a head sheave assembly is arranged at the top of the rack; the two ends of the lifting rope assembly are connected with an oil pumping rod and a reversing balance box assembly correspondingly; the single chain transmission mechanism comprises an upper chain wheel, a lower chain wheel and a chain; the upper chain wheel is mounted on the upper portion in the rack through a lifting rod assembly capable of being adjusted in a lifting mode; the lower chain wheel is mounted on the lower portion in the rack; the upper chain wheel and the lower chain wheel are in engaged transmission through the chain, and the chain is provided with a reversing crankshaft assembly connected with the reversing balance box assembly; and the power device drives the lower chain wheel to rotate so that the chain can operate to drive the reversing balance box assembly to ascend and descend. The chain reversing oil pumping unit has the beneficial effects that the single chain symmetric structure is adopted, uneven stress is avoided, the length of the chain can be adjusted conveniently according to requirements, the chain can drive the reversing balance box assembly to ascend and descend without changing the operation direction, and thus reversing of the upper stroke and the lower stroke of the oil pumping unit is easier and more convenient.

Description

technical field [0001] The invention relates to the technical field of petroleum equipment, in particular to a chain reversing pumping unit. Background technique [0002] Carbon fiber continuous sucker rod has the advantages of low density, high tensile strength, and corrosion resistance. The excellent performance of carbon fiber continuous sucker rod has been well verified in the application of small pump deep pumping, anti-corrosion and life extension, and replacing small electric pumps. economic benefit. The carbon fiber continuous sucker rod is used for lifting operations in the well. When the carbon fiber continuous sucker rod reaches the limit positions of the up stroke and the down stroke, it needs to reverse direction. At present, the reverse direction of the up stroke and the down stroke of the pumping unit is generally realized by changing the direction of motion of the power unit. , The power unit frequently starts and stops and reverses direction, high energy co...

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Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a chain reversing pumping unit, which is used to solve the problem of high energy consumption, high failure rate, and short service life of the pumping unit in the prior art. The problem of uneven force

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