Cargo pump apparatus for liquid cargo ship

Abstract

A cargo pump apparatus is suitable for liquid cargo ships required to carry six to eight types of cargo and having a plurality of holds partitioned by a central bulkhead standing upright on a lower longitudinal stool and transverse bulkheads. Each cargo pump room is provided at an intersecting portion of the central bulkhead and one of the transverse bulkheads, and penetrates a hatch provided on an upper deck and the lower longitudinal stool. One deep well pump is provided in each cargo pump room. The suction side of the deep well pump is connected to a cargo suction portion which has an open end in the hold and penetrates the inclined wall of the lower longitudinal stool. The discharge side of the deep well pump is connected to a cargo discharge pipe connected to a manifold pipe laid on the upper deck through the cargo pump room.; Either the cargo suction portion in the cargo pump room is connected through an expansion pipe, or the deep well pump is secured through an expansion pipe.

Description

technical field [0001] The invention relates to a cargo pump device and a cargo pipeline on a liquid cargo transport ship, in particular to a cargo pump device and a cargo suction pipe used in a liquid cargo lifting and unloading system. Background technique [0002] In recent years, in order to be able to load and unload four types of cargo at the same time, a 50,000-ton liquid cargo ship has been built. Four cargo pumps are installed in the cargo pump room between the cargo cabin and the engine room, and the main branch (メインブランチ ) way of cargo piping. In addition, among liquid cargo ships having 12 to 16 cabins, independent cargo pumps (submersible pumps) are installed in each of the tanks. [0003] As a liquid cargo ship equipped with independent cargo pumps in each hold, for example, there is a liquid cargo ship disclosed in JP-A-2001-180576. [0004] The technology disclosed in Japanese Patent Application Laid-Open No. 2001-180576 aims to "provide a chemical tanker cap...

AI Technical Summary

Problems solved by technology

[0009] However, in a liquid cargo ship that is divided into 12 to 16 cabins, more than ten kinds of cargoes will not be packaged, and at most about 6 to 8 kinds of packages will be required, so it will not be on the starboard side divided by the central bulkhead. And the pair of holds on the port side contain different types of cargo, so if they are equipped with submersible pumps, not only will there be excess equipment, but also it will be necessary to control each pump, resulting in labor costs and equipment costs including maintenance. fee increase etc.

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