A method for manufacturing a chimney for a ship's closed desulfurization device

Abstract

The invention relates to the technical field of shipbuilding, in particular to a manufacturing method for a chimney used in a ship's closed desulfurization device. It includes the following steps: (1) chimney model design; (2) blanking diagram design; (3) typesetting before blanking; (4) blanking; (5) chimney cylinder production; (6) cylinder segmentation: Draw the segmental cutting position line on the chimney barrel, and cut the chimney barrel into the lower half of the chimney barrel and the upper half of the chimney barrel; (7) rib welding; (8) pre-assembly; (9) final assembly . Wherein, in step (6) in the shell segmenting process, a pair of anti-deformation reinforcing components are respectively pre-set on the upper and lower positions of the segmental cutting position line on the outer wall of the chimney shell, and the anti-deformation reinforcing components are installed after cutting the chimney shell. Continue to keep until the final assembly process of step (9) is completed before removing. The invention realizes the safe hoisting of the chimney and the desulfurization tower on the premise of ensuring the quality of the chimney.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a manufacturing method for a chimney used in a ship's closed desulfurization device. Background technique [0002] A desulfurization tower is installed on a 70,000-ton wood chip ship, and the desulfurization tower is installed on the chimney as a whole (such as Figure 4 Shown) inside the formation type desulfurization device. [0003] The manufacturing method of the chimney on the ship in the prior art is that the chimney is integrally fabricated in advance in the shipyard, then hoisted onto the ship, and then the chimney and the desulfurization tower are integrally hoisted in place on the ship. However, due to the high heights of the chimney and desulfurization tower, it is required that the effective hoisting height of the crane should at least exceed the sum of the height of the chimney and the desulfurization tower. Even if the effective hoisting height of the crane is...

AI Technical Summary

Problems solved by technology

However, due to the high heights of the chimney and desulfurization tower, it is required that the effective hoisting height of the crane should at least exceed the sum of the height of the chimney and the desulfurization tower. Even if the effective lifting height of the crane is not exceeded, because it is close to the limit of the lifting height, it will bring certain troubles and safety hazards to the lifting and installation of the chimney and desulfurization tower

[0004] In view of the above problems, it is necessary to propose a new method to solve the problem of lifting the chimney and desulfurization tower on the ship site

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