Deformation control method for SHS treatment of inner wall of ultra-long pipeline

Abstract

The invention provides a deformation control method for SHS treatment of the inner wall of an ultra-long pipeline, and belongs to the technical field of machines. Comprising the following steps: establishing an initial three-dimensional model of petroleum pipeline clamping by using solidworks software; importing the initial input script file into Abaqus software, setting constraint conditions and loading loads, performing finite element analysis, generating an initial output script file containing initial deformation, and transmitting the initial output script file to Isight software; generating P groups of sample parameters through Isight software, and importing the P groups of sample parameters into Solidworks software; modifying the initial three-dimensional model according to sample parameters and importing the initial three-dimensional model into Abaqus software; performing finite element analysis on the basis of the input script sample file, generating an output script sample file containing sample deformation, and importing the output script sample file into Isight software; s5 and S6 are repeatedly executed until all the P groups of sample parameters are applied, and P output script sample files are imported into the Isight software; and reading the P output script sample files in the Isight software, selecting the sample parameter corresponding to the output script sample file with the minimum sample deformation as an optimal result, and outputting the optimal result.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to a deformation control method for SHS treatment of the inner wall of an ultra-long pipeline. Background technique [0002] In the process of oil transportation, the inner wall of the pipeline will be corroded. Therefore, it is necessary to carry out anti-corrosion treatment on the inner wall of the oil pipeline. The most widely used is the SHS inner wall anti-corrosion coating process. The oil pipeline is clamped in a multi-pinch rotary drum, and the rotary drum drives the oil pipeline to rotate along the axis of the oil pipeline, so that the anti-corrosion coating is evenly attached to the oil. on the inner wall of the pipe. [0003] The coaxial error of the general oil pipeline clamping and centering device is large, and they are all rigid designs, resulting in serious bending of the oil pipeline after the SHS process prepares the inner wall anti-corrosion coating, and the fi...

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Problems solved by technology

[0003] The coaxial error of the common oil pipeline clamping and centering device is large, and they are all rigid designs, which lead to severe bending of the oil pipeline after the inner wall anti-corrosion coating is prepared by the SHS process, and the first pass rate is low. In order to reduce the coaxial error and suppress the oil The deviation and bending of the pipeline caused by centrifugal force during the rotation process. The prior art CN202121463488.3 provides a diamond-shaped flexible clamp. When working, the oil pipeline is clamped by the roller parts of multiple diamond-shaped clamps in a point-touch manner. The tubular When the positioning bracket rotates, it drives the oil pipeline to rotate, and the rhombus clamp generates contraction force under the action of centrifugal force, so as to achieve the effect of restraining deviation and bending

In the prior art, the point-contact clamping method realized by using the diamond-shaped clamp with rollers can play a better protective effect in theory, but the effect of the number of clamping contacts and the clamping position on the deformation of the oil pipeline is unknown. It is difficult to achieve deformation control in

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