A construction method of a ship's double chimney general section

Abstract

The invention discloses a method for constructing a general section of a ship's double chimney. The method comprises the following steps: dividing the general section of the double chimney into a lower section, an upper section, a left chimney section and a right chimney section, totally four structural sections. The section is manufactured in sections; the outfitting unit is divided into main engine scrubber unit, auxiliary engine scrubber unit, muffler unit, main engine exhaust pipe and auxiliary engine exhaust pipe according to regional equipment layout; the entire double chimney section is constructed vertically , first place the lower section normally on the level ground, and then hoist into the main scrubber unit, auxiliary scrubber unit and muffler unit in turn; wait for the main scrubber unit, auxiliary scrubber unit and muffler unit to be installed and fixed Finally, insert the upper section on the outfitting unit that has been hoisted from top to bottom, and close it with the lower section; insert the exhaust pipe of the main engine and the exhaust pipe of the auxiliary machine into the upper section respectively, and connect them with the The main scrubber unit, auxiliary scrubber unit and muffler unit are connected.

Description

technical field [0001] The invention belongs to the technical field of ship building, and in particular relates to a method for building a general section of a ship's double chimney. Background technique [0002] At present, during the segmental construction of ship chimneys, the chimney segments are divided into segmental structures and outfitting units. The rear wall is the base, and the side is built on the frame. After the segmental structure is welded, the pipe brackets, outfitting equipment and exhaust pipes inside the chimney are installed. After all the outfitting is installed, Enter the spraying workshop for painting operations, and finally turn over 90 degrees by a crane to make it normal, and then hoist and close it in the dock. This segmented construction method is not normal shelving installation for larger outfitting equipment in the segmented construction stage, and the safety risk is greater. In the case of limited lifting capacity, the number of pipes and o...

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Problems solved by technology

[0004] 1. For larger double-chimney sections, there are certain hoisting safety risks when the sections are closed and the overall turning over and the equipment is installed sideways;

[0005] 2. For larger double-chimney sections, the overall construction and manufacturing are difficult, the precision is difficult to control, the welding deformation is large, and the flatness of the surrounding wall is difficult to control;

[0006] 3. The double chimney is built in sections. Due to the complexity of the internal outfitting of the section, it is not conducive to the pre-embedding of the equipment unit and the pre-installation of the exhaust pipe. It is often necessary to open a process hole at the top of the section for the installation of the equipment unit and the exhaust pipe. Install;

[0007] 4. The double chimney is built in sections as a whole, occupying a large area of ​​the tire frame site, and the production cycle is long, which is not conducive to the effective operation of the production site

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