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Construction method for manufacturing multi-pipe intersecting steel pipe component

A technology of multi-pipe intersecting steel pipes and construction methods, which is applied in the direction of manufacturing tools, workpiece edge parts, metal processing equipment, etc., to achieve the effect of improving construction efficiency

Inactive Publication Date: 2011-02-02
王正怡 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This new structure has no construction experience to learn from, no current standards to refer to, and there are many technical difficulties

Method used

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  • Construction method for manufacturing multi-pipe intersecting steel pipe component
  • Construction method for manufacturing multi-pipe intersecting steel pipe component
  • Construction method for manufacturing multi-pipe intersecting steel pipe component

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Embodiment Construction

[0016] This multi-pipe intersecting steel pipe component manufacturing method of the present invention is used for the first 240m double-barrel self-supporting all-steel structure chimney in China, which is the first in China and Asia. The specific implementation method is as follows:

[0017] 1. Use 3D AutoCAD to model the Jinling steel chimney, divide the element line along the circumference of the branch pipe, and then draw it into a 2D diagram, see the attached figure 1 .

[0018] 2. After the intersecting line is drawn, print out the sample diagram according to 1:1 and cut it along the intersecting line. Attach the sample diagram to the outer wall of the steel pipe. Note that the cross lines printed on the sample diagram coincide with the cross lines on the steel pipe. The cutting line draws the cutting line on the steel pipe, and uses the flame to cut the steel pipe along the cutting line.

[0019] 3. Use computer modeling to find out the relative spatial relationship b...

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Abstract

The invention relates to a construction method for manufacturing a multi-pipe intersecting steel pipe component and belongs to the technical field of steel structure manufacturing. The construction method is characterized in that: 1) intersecting lines are drawn by adopting three-dimensional AutoCAD modeling and circumference bisecting tessellation line methods, thereby filling the blank that most intersecting line software in markets cannot solve the problems of complicated intersecting line forms that the axes of multi-pipe intersecting and intersecting steel pipes are not intersected on one point, the steep pipe is intersected with a steel plate and the like; 2) a sample figure is printed in a ratio of 1 to 1 instead of a conventional manual lofting method ; 3) relative space relations among cross lines of a main pipe and branch pipes are found out by a computer, a method combining projection, space angles and characteristic points and lines is used as a method for positioning manufacturing spaces, so that a great amount of investment in high-precision measurement instruments is saved, and the method is the low-cost, high-efficiency and high-precision method for measuring and positioning the spaces; and 4) a welding method is adopted for welding lines of large-diameter and small-angle intersecting lines by combining internal and external groove welding and internal and external welding, so the problem that the welding lines of the roots of the intersecting lines cannot be fully welded is solved.

Description

Technical field [0001] The invention provides a manufacturing and construction method of multi-pipe intersecting steel pipe components, belongs to the technical field of steel structure manufacturing, and is suitable for the manufacturing and construction of self-supporting steel chimney support systems and other pipe truss structures. Background technique [0002] The chimney of Nanjing Jinling Phase II Power Plant is a 240m double-tube self-supporting steel structure chimney pioneered in China and the first in Asia. This new structure has no construction experience to refer to, no current standards to refer to, and there are many technical difficulties. Our company has invented a construction method of multi-pipe intersecting steel pipe components, which makes the results of pipe truss structure applied to the field of chimneys, and promotes the development of concrete chimneys to steel chimneys. Contents of the invention [0003] The technical scheme adopted in the pre...

Claims

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Application Information

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IPC IPC(8): B23K10/00B23K7/00B23K33/00
Inventor 王正怡徐春苗刘成
Owner 王正怡
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