Pipe connecting method

Abstract

The invention relates to a pipe connecting method. The connecting method comprises the following steps: firstly, a joint of a connected pipe is extruded with a connecting part by a hydraulic channeling machine; the radius of the connecting part is smaller than the radius of the connected pipe; then, one side near the connecting part and far from the joint is extruded with a groove by the hydraulic channeling machine; the ends of the connecting part of the connected pipe are in butt joint, and the connecting ports are polished flatly; the connecting ports are prefixed by sealing strips; then, a hoop rubber ring is positioned on the outer side of the connected pipe, and is matched with the prerolled groove; a hoop is buckled at the external of the hoop rubber ring; and finally, a bolt is used for fastening. The pipe connecting method is excellent in connection sealing performance, can convey a medium with high seepage force, is more convenient for construction, is more reliable in connection, and is convenient for installation, disassembly and maintenance.

Description

technical field [0001] The invention relates to the technical field of liquid pipeline transportation, in particular to a pipeline connection method. Background technique [0002] During the long-distance transportation of industrial oil products (such as diesel oil, kerosene, gasoline, hydraulic oil and lubricating oil, etc.), the problem of pipeline connection will be encountered. The connections between existing pipelines are threaded or brazed connections, and memory pipelines connection; the pipe wall involved in threaded connection is thicker and prone to loosening; although brazed connection has the characteristics of high strength and low cost, the construction on the project site also requires the connected pipe to have a certain wall thickness; memory pipe connection The pressure resistance capacity of the pipeline in this method is not high, and the connection strength is very sensitive to the assembly gap between the inner diameter of the memory pipe joint and th...

AI Technical Summary

Problems solved by technology

[0002] During the long-distance transportation of industrial oil products (such as diesel oil, kerosene, gasoline, hydraulic oil and lubricating oil, etc.), the problem of pipeline connection will be encountered. The connections between existing pipelines are threaded or brazed connections, and memory pipelines connection; the pipe wall involved in threaded connection is thicker and prone to loosening; although brazed connection has the characteristics of high strength and low cost, the construction on the project site also requires the connected pipe to have a certain wall thickness; memory pipe connection The pressure resistance capacity of the pipeline in this method is not high, and the connection strength is very sensitive to the assembly gap between the inner diameter of the memory pipe joint and the outer diameter of the connected pipe. In actual engineering, due to the limitation of processing accuracy, the fluctuation of the size of the assembly gap is inevitable. , which leads to the uneven pressure resistance of the joints of the installation pipe system, and the construction quality is difficult to guarantee; in recent years, the groove connection has become one of the pipe connection methods widely used by people, but when the medium penetration of the pipeline is strong , such as diesel oil, the reliability of the traditional grooved clamp connection pipe is very low, and its sealing effect is easy to be poor, and it is prone to leakage, detachment and other phenomena, which cannot meet the requirements of use.

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