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Butt welding centering and positioning method of pipeline group

A technology of centering positioning and pipeline group, applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve the problems of complex construction, inconvenient welding construction of pipeline group, expensive counterpart equipment, etc., and achieve intuitive alignment method Clear, high centering precision, easy calculation and adjustment

Active Publication Date: 2015-10-07
BOMESC OFFSHORE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, hydraulic or pneumatic counterparts are often used to ensure the coaxiality in the welding construction of the pipeline group. The counterpart equipment is expensive and the construction is more complicated. It requires professional technicians to operate, which brings inconvenience to the welding construction of the pipeline group.

Method used

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  • Butt welding centering and positioning method of pipeline group
  • Butt welding centering and positioning method of pipeline group
  • Butt welding centering and positioning method of pipeline group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Through the adjustment of the hydraulic tug-roll device, the pipeline is roughly centered first;

[0050] (2) Fix the meter frame on the outer circumference of the rotated pipeline 2, adjust the measuring rod of the digital display dial gauge to be vertically downward, and make the measuring head touch any point S of the fixed pipeline 1 as the initial measurement position point;

[0051] (3) Adjust the digital dial indicator to zero, and use the hydraulic tow-roll device to make the rotated pipeline 2 circle the center of the rotated pipeline O 2 The axis where it is located slowly rotates 360° clockwise, and write down the two maximum values ​​of the absolute value change of the digital display dial indicator, that is, the maximum value |CD| in the two processes from S to T and from T to S , |EF|.

[0052] (4) Calculate the adjusted distance of the rotated pipeline 2 in the Z direction and the X direction, the calculation formula is as follows:

[0053] The adju...

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Abstract

The invention discloses a centering and locating method for welding a pipeline assembly. The method includes the first step of carrying out rough centering on pipelines through adjustment of a hydraulic pulling and rolling device, the second step of fixing a meter frame on the outer circumference of a rotated pipeline, adjusting a digital display dial meter measurement rod to be vertically downward and enabling any point to be an initial measurement position point, wherein the any point refers to the point that a measurement head makes contact with a fixed pipeline; the third step of carrying out zero setting on the digital display dial meter, utilizing the hydraulic pulling and rolling device to enable the rotated pipeline to slowly rotate 360 degrees clockwise around the axis where the circle center of the rotated pipeline is located, and recording two maximum variable values read on the digital display dial meter, the fourth step of calculating the adjustment distance of the rotated pipeline in the Z direction and the adjustment distance of the rotated pipeline in the X direction, and the fifth step of adjusting the distance of the rotated pipeline in the vertical direction and the distance of the rotated pipeline in the horizontal direction according to the adjustment distance of the rotated pipeline in the Z direction and the adjustment distance of the rotated pipeline in the X direction. The centering and locating method for welding the pipeline assembly is visual and clear and high in centering accuracy.

Description

technical field [0001] The invention relates to a centering and positioning method, in particular to a pipeline group butt welding centering and positioning method. Background technique [0002] As a clean energy, natural gas gradually replaces the traditional artificial gas. It has high calorific value, low cost, and less pollution. It has been widely used in recent years. Pipeline is an important tool for transporting natural gas, and pipeline welding assembly is an important link in pipeline installation. The welding quality of pipeline is directly related to the safe operation of natural gas pipeline. During butt welding of pipeline groups, adjusting the horizontal and vertical radial gaps between the two groups of pipelines to ensure coaxiality is an important prerequisite for pipeline welding. [0003] At present, hydraulic or pneumatic counterparts are often used to ensure the coaxiality in the welding construction of the pipeline group. The counterpart equipment is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/053
CPCB23K37/00B23K37/0538B23K2101/10
Inventor 彭文成石磊
Owner BOMESC OFFSHORE ENG CO LTD
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