Preparation method of mechanical composite pipeline based on hydraulic drive

Abstract

The invention discloses a method for preparing a mechanical composite pipeline based on hydraulic driving, which comprises the following steps of: pipe expanding equipment is placed in a lining pipe to be expanded, an adjusting mechanism of a driving vehicle in the pipe expanding equipment is adjusted, wheels on three folding and unfolding assemblies which are uniformly distributed along the circumferential direction are propped against the lining pipe, and it is ensured that the driving vehicle and the lining pipe are coaxially arranged; then, motors on wheels of the driving vehicle are started, the driving vehicle is driven to move forwards, and the driving vehicle drives a pressing device of the pipe expanding equipment to move forwards synchronously; and meanwhile, a hydraulic device is started to supply oil to the interior of the pressing device, and the pressing device presses the lining pipe and starts to rotate under the driving of oil pressure, so that the pressing device gradually completes expansion of the lining pipe in the spiral movement process of combining linear advancing movement and rotating movement, the lining pipe and the carbon steel pipe are deformed, and finishing the preparation of the composite pipeline until the carbon steel pipe is in contact with a pipeline shaping outer mold. Continuous operation can be achieved, the operation process is stable, the preparation cost is low, and the production efficiency is high.

Description

technical field [0001] The invention belongs to the field of composite pipeline preparation, and in particular relates to a hydraulically driven mechanical composite pipeline preparation method. Background technique [0002] Composite pipes are light in weight, good toughness, impact resistance, high compressive strength, smooth inner wall, small friction resistance, good rigidity and strength, and are widely used in industrial oil and gas transportation, industrial water circulation systems, wear-resistant and anti-corrosion systems and Cold and hot water transportation and other fields; therefore, there are currently higher requirements for the processing and preparation of composite pipes. [0003] At present, there are usually two methods for the preparation and processing of composite pipes: mechanical processing or metallurgical processing; the mechanical processing method is to expand and compress the inner liner through a mechanical structure, so that the inner liner...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that in the process of preparing composite pipelines in the prior art, the pipeline structure is easily damaged due to uneven stress on the lining pipe or excessive pressure, and proposes a mechanical composite pipeline preparation method based on hydraulic drive. , to achieve a stable and efficient composite pipe preparation process

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