Hydraulic docking device used outside large-caliber gathering and transportation pipeline

Abstract

The invention relates to a hydraulic docking device used outside a large-caliber gathering and transportation pipeline. The hydraulic docking device achieves the purpose of rapidly achieving pipeline docking and repairing on the premise of guaranteeing welding quality. According to the technical scheme, a fixed holding ring, a right rotating holding ring and a left rotating holding ring are each provided with an arc T-shaped groove of certain gradient; the hanging ring end of the right rotating holding ring and the hanging ring end of the left rotating holding ring are connected with two hanging ring ends of the fixed holding ring through rotating hinge pins; hydraulic cylinder ends of horizontal push hydraulic cylinders are connected with horizontal push hydraulic cylinder bases through flanges, and a push rod end acts on the positions of a circular groove of a wedge-shaped locking ring; hydraulic cylinder ends of swing hydraulic motors are connected with swing hydraulic motor bases through flanges, and rotating shaft ends are connected with the rotating hinge pins through couplings. According to the hydraulic docking device, a hoisting form and hydraulic drive are adopted, the hydraulic docking device can adapt to pipe repair under complex working conditions, and meanwhile centring and weld seam gap adjustment between the pipeline to be welded and a new pipeline can be achieved rapidly.

Description

technical field [0001] The invention relates to a hydraulic large-diameter gathering and transportation pipeline external butt joint for pipeline laying and repairing in oil and gas storage and transportation and urban gas engineering. Background technique [0002] In oil and gas storage and transportation and urban gas projects, long-distance large-diameter pipelines need to be laid for oil and natural gas transportation. For oil and gas pipelines in service, as the service life of the pipeline increases, the pipeline may be damaged and defective due to factors such as corrosion, fatigue and mechanical damage. , or due to urban construction and other reasons that need to reroute in-service pipelines, etc., it is necessary to re-weld new pipelines after part of the in-service oil and gas pipelines are cut off; The fast and accurate butt joint of the welded pipe sections, the second is how to realize the accurate butt joint and axial stretching of the two welded pipe sections...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hydraulic large-diameter gathering and transportation pipeline external docking device in order to solve the problem of difficult equipment construction and docking during the maintenance of large-diameter oil and gas pipelines.

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