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Ground assembling and welding integral installation and construction technology for vaporization-cooling chimney

A technology for vaporizing cooling flue and cooling flue, which is applied in welding equipment, manufacturing tools, arc welding equipment, etc., to reduce risks, save equipment purchase costs, and increase service life.

Active Publication Date: 2010-08-18
CHINA 22MCC GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the above-mentioned problems existing in the existing large-scale converter vaporization flue installation process, and provides a method that can ensure welding quality, reduce the workload of high-altitude operations, reduce potential safety hazards in construction, improve work efficiency, shorten construction period, increase Overall installation and construction technology of vaporization cooling flue ground group butt welding for service life of vaporization cooling flue

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  • Ground assembling and welding integral installation and construction technology for vaporization-cooling chimney
  • Ground assembling and welding integral installation and construction technology for vaporization-cooling chimney
  • Ground assembling and welding integral installation and construction technology for vaporization-cooling chimney

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Embodiment Construction

[0030] The present invention is described in detail below in conjunction with the embodiments given by the accompanying drawings.

[0031] The cooling section flue of the large-scale converter vaporization flue described in this embodiment is divided into two sections, with a total length of 25506.4mm and a maximum diameter of Φ5540mm, wherein the length of the cooling section flue (A section) 1 is 12250mm, and the cooling section flue (B section) 2 The length is 13253.4mm; the flue of the curved section is divided into three sections, the maximum diameter is Φ5100mm, the width is 16565mm, and the height is 13515mm. The following are the overall installation and construction process steps of the vaporization cooling flue ground assembly butt welding of the present invention:

[0032] Step 1: Make the flue support:

[0033] Choose a spacious site, and after the ground is flattened and compacted, use 25mm steel plates to lay a 30m×6m steel platform 3 for assembling the flue. A...

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Abstract

The invention relates to installation project construction of a vaporization-cooling chimney of a large converter, in particular to ground assembling and welding integral installation and construction technology for the vaporization-cooling chimney. The technology comprises the following steps: laying a steel platform and making a chimney support by using steel plates; transporting a cooling chimney to an installation site by using a large-tonnage flat truck; assembling the cooling chimney by using a large-tonnage crane; performing all-position ground welding on the vaporization-cooling chimney by adopting argon tungsten arc welding; performing 25 percent of radiographic detection and a corresponding airtight test on the welded chimney according to construction specifications; hoisting the chimney integrally; and fixing chimney system equipment according to the following sequence: curved chimney, cooling chimney and movable chimney so as to complete the installation of the chimney. The technology ensures the welding quality of the vaporization-cooling chimney, reduces the workload of overhead construction, reduces potential safety hazard during the construction, greatly improves the working efficiency of the installation of the vaporization-cooling chimney, reduces the duration of the construction, and increases the service life of the vaporization-cooling chimney.

Description

technical field [0001] The invention relates to the installation engineering construction of a large-scale converter vaporization cooling flue, in particular to an overall installation and construction process of the vaporization cooling flue ground group butt welding. Background technique [0002] At present, the installation process of large-scale converter vaporization flue has been changed from flange connection to welding connection, which is beneficial to waste heat recovery. Due to the large size of vaporization cooling flue components, most of them are transported separately to the site and assembled butt welded during installation. The connection method is the integrated tube bundle welding connection, which is hoisted into place in sections, and then assembled and welded on the converter platform. Since the butt welding is performed at high altitude and the cooling flue is at an angle of 50° with the converter platform, scaffolding is required , At the same time, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/167B23K9/235C21C5/46
Inventor 王春升
Owner CHINA 22MCC GROUP CORP
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