Device for discharge outboard pipe and water diversion plate of ship and manufacturing process

Abstract

The invention relates to a device for a discharge outboard pipe and a water diversion plate of a ship and a manufacturing process, and the device mainly comprises a base, the discharge outboard pipe, the water diversion plate and an outboard plate; the base is fixed in a spot welding mode, the inner portion and the outer portion of the base are both coated with GRE, the discharge outboard pipe is made of carbon steel, the inner surface of the discharge outboard pipe is coated with GRE, the discharge outboard pipe and the outboard plate are fixed in a conventional welding mode, the outboard plate does not need to be replaced in a large area, and a hole can be formed according to a conventional discharge outboard pipe. According to the process for coating the GRE inside the discharge outboard pipe, acidic corrosion wastewater can be completely isolated from the carbon steel discharge outboard pipe, the risk of perforation of the discharge outboard pipe is reduced, the cost required by the process is also reduced, the site construction period is short, and the dock period plan of the whole ship is not influenced.

Description

technical field [0001] The invention belongs to the technical field of ships, and in particular relates to a device and a manufacturing process of a ship's outboard pipe and a water dividing plate. Background technique [0002] Due to IMO's restrictions on sulfur emissions from ships, many ships currently install desulfurization towers to meet IMO requirements. At present, for waste water pipelines containing acid corrosion after exhaust gas desulfurization, most of them use GRE glass steel pipes, but for short pipes outboard , there are the following: [0003] 1. Anti-corrosion paint [0004] The disadvantage is that it is difficult to ensure that the paint can be evenly coated on the inner surface of the outer tube, and the paint will peel off, which will lead to intensified corrosion at the peeled area, resulting in perforation and water leakage of the outer tube, which will cause great risks to ship navigation; [0005] 2. Plastic-coated carbon steel pipe [0006] The...

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Problems solved by technology

[0008] The disadvantage is that the duplex stainless steel pipe is very expensive; in addition, many shipyards do not have the welding process of duplex stainless steel and carbon steel approved by the classification society; there is a certain potential difference between the two metal materials of stainless steel and carbon steel, and electrochemical corrosion is Potential risks

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