Construction method of large steel chimney high-altitude assembly
A construction method and chimney technology, applied in the construction field of high-altitude assembly of large steel chimneys, to achieve the effects of improving construction efficiency, saving construction costs, and ensuring construction quality
Inactive Publication Date: 2020-04-21
CHINA NAT CHEM ENG THIRD CONSTR
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Problems solved by technology
The key point is to solve the problem of the lining connection of the grouping parts
Method used
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[0027] Such as Figure 1 to Figure 4 Shown, the construction method of large-scale steel chimney high-altitude combination of the present invention is the method that several sections chimneys are vertically welded together, and it comprises the following steps:
[0028] (a), several sections of chimneys that are adjacently connected are laid flat on the ground in turn, and several sections of chimneys include: a top section cylinder 1, a middle section cylinder 5 and a bottom section cylinder 4, in the top section An annular upper end plate 3 is welded on the inner wall of the top section cylinder body 1 at the bottom of the cylinder body 1, and an arc-shaped ring plate 6 is welded on the inner wall of the bottom section cylinder body 4 at the upper end of the bottom section cylinder body 4, and the arc-shaped ring plate 6 extends from the bottom section The inner wall of the cylinder body 4 protrudes outwards, and the end of the protruding arc-shaped ring plate 6 is welded w...
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The invention discloses a construction method of a large steel chimney high-altitude assembly. According to the construction method, a plurality of segments of chimneys which are adjacently connectedare sequentially put on a flat ground in sequence in a lie-down manner, the segments of chimney comprise a top segment cylinder, at least one middle segment cylinder, and a bottom segment cylinder, anannular upper end plate is welded to the lower portion of the top segment cylinder, an arc ring plate is welded to the position, on the upper end of the bottom segment cylinder, of the inner wall ofthe bottom segment cylinder, the arc ring plate extends outwards from the inner wall of the bottom segment cylinder, an annular lower end plate is welded to the end of the extended-out arc ring plate,a base plate is fixed to the outer side of the annular lower end plate, an annular upper end plate is welded to the lower portion of the middle segment cylinder, an arc ring plate is welded to the position, on the upper end of the middle segment cylinder, of the inner wall of the middle segment cylinder, and extends outwards from the inner wall of the middle segment cylinder, an annular lower endplate is welded to the end of the extended-out arc ring plate, linings are poured to the inner walls of the top segment cylinder, the middle segment cylinder and the bottom segment cylinder, the bottom segment cylinder is lifted and fixed to a base, and the middle segment cylinder and the top segment cylinder are sequentially welded to the bottom segment cylinder.
Description
technical field [0001] The invention relates to a construction method for large steel chimneys, in particular to a construction method for high-altitude pairing of large steel chimneys. Background technique [0002] With the development of my country's petrochemical industry, the demand for petrochemical industry capacity continues to increase, and large-scale petroleum refining projects are rapidly developed at home and abroad. Large steel chimneys are an essential part of petroleum refining projects. For the segmental installation of large steel chimneys involving super-high-altitude operations and confined space operations, there are great construction safety hazards. Reasonable construction measures are the key to ensuring construction quality and safety and reducing construction costs. [0003] At present, in the existing construction technical schemes of large-scale steel chimneys, most of the steel chimney cylinders are modularized by the manufacturers in the factory...
Claims
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IPC IPC(8): E04H12/34E04H12/28E04H12/08
CPCE04H12/08E04H12/085E04H12/28E04H12/34E04H12/342
Inventor 丁义刚李文蔚
Owner CHINA NAT CHEM ENG THIRD CONSTR