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A Welding Method Using Cast Iron Platform to Control the Levelness of Tower Skirt Foundation

A cast iron platform, welding method technology, applied in welding equipment, manufacturing tools, metal processing equipment and other directions, can solve the problem of difficult control of welding deformation, improve bearing capacity and stability, reduce correction work, reduce manpower and material resources. Effect

Active Publication Date: 2020-04-28
盈德气体工程(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With 60000Nm 3 / H air separation rectification tower as an example, the height of the medium pressure tower, main condensing evaporator and low pressure tower is 70 meters after the on-site assembly, the verticality requirement is not more than 1mm / m and the overall is not more than 15mm, the level of the skirt foundation It is the prerequisite for controlling the verticality of the tower; however, due to the influence of the width, length and cost control of the raw material plate in the manufacturing process, it is an inevitable choice for most equipment manufacturers to adopt multiple splicing of the base ring plate, and in addition, there are many materials in the design. Made of aluminum alloy, the thermal conductivity is three times that of ordinary carbon steel, and the welding deformation is far more difficult to control than ordinary carbon steel

Method used

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  • A Welding Method Using Cast Iron Platform to Control the Levelness of Tower Skirt Foundation
  • A Welding Method Using Cast Iron Platform to Control the Levelness of Tower Skirt Foundation
  • A Welding Method Using Cast Iron Platform to Control the Levelness of Tower Skirt Foundation

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Embodiment

[0053] Embodiment: the present invention uses 60000Nm 3 The rectifying tower of the air separation equipment of / h is taken as an example to illustrate the technical scheme of the present invention. The material of the tower is 5083, and the diameter of the tower is 4500mm.

[0054] Groove the base ring plate 1 that has been blanked according to the welding process, place the ring plate to be spliced ​​on the cast iron platform 2, draw a line on the platform according to the diameter of the cylinder, adjust the root gap to 1-2mm, and prepare for pre-processing. assembled.

[0055] Place the stud 3 in the T-shaped groove of the platform, adjust it to the area of ​​the spliced ​​weld 5 (as close as possible to the weld without affecting the welding), and then place a backing plate with the same thickness as the foundation ring plate at the corresponding position, and then use The pressing plate 5 with holes matched with the stud presses the base ring plate, and finally the nut ...

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Abstract

A welding method utilizing a cast iron platform to control levelness of a tower skirt foundation comprises the following steps: (1) placing foundation annular plates, which need to be spliced, on thecast iron platform, pressing the foundation annular plates by means of perforated pressing plates after adjustment, and tightening the perforated pressing plates and the foundation annular plates through nuts; and (b) welding splicing seams of the foundation annular plates, loosening all fixed pressing plates that are integrally cooled down when finishing welding of one sides of all weld joints ofthe foundation annular plates, grinding excess weld metal of the weld joints till the weld joints are flush with base metal, and performing penetrant testing after finish of welding.

Description

technical field [0001] The invention relates to a welding method using a cast iron platform to control the levelness of the base of the tower skirt, which is mainly suitable for the manufacture of the base of the skirt of the tower, and a welding method that requires a relatively high verticality of the tower as a whole, belonging to air separation equipment manufacturing field. Background technique [0002] As the design of chemical equipment becomes increasingly large, and the height of the equipment reaches more than 70 meters, since the chemical tower contains packing or sieve plate, the verticality of the tower as a whole is required to be high. Secondly, the welding deformation of the foundation ring plate of chemical equipment not only reduces the dimensional accuracy and appearance of the bottom plate, but also reduces its bearing capacity and stability. In order to meet the verticality required by the design and reduce the difficulty and cost of on-site column dock...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23K31/02
CPCB23K31/02B23P15/00
Inventor 毛炜胡德友叶丹孙赛赛沈杭勇唐林
Owner 盈德气体工程(浙江)有限公司
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