Gas cylinder positioning system for cng transport ship

Abstract

A gas bottle positioning system of a CNG transport ship comprises gas bottle bases (3) disposed at the bottom of a ship body (1) and a keel（4） disposed at an upper-middle portion of the ship body (1). The bottoms of gas bottles (2) are limited in a swing manner by means of spherical flanges (B2) and conical hole seats (B7) on the gas bottle bases (3), the middle portions of the gas bottles (2) are limited in a damping manner by means of binding belts (M1) and the keel (4), and the upper portions of the gas bottles (2) are flexibly connected to a hatch cover (5) in a limited manner by means of upper plug components, forming a vertical arrangement structure of the gas bottles. The bottoms of the gas bottles are limited in a swing manner, and the middle portions of the gas bottles are limited by means of the binding belts. By means of the two-point limiting structure, the bottle can make an adaptive swing adjustment according to the jolting and swing of the ship body, so that the impact from the ship body on the bottles and gas bottle supports is reduced, and the safety of gas positioning during traveling of the CNG ship is improved.

Description

technical field [0001] The invention belongs to a compressed gas marine transport system, and relates to a CNG transport ship, in particular to a gas cylinder positioning system for a CNG transport ship. Background technique [0002] Compressed natural gas (CNG) carriers refer to cargo ships that transport compressed natural gas. Since they do not require expensive facilities such as liquefaction plants and regasification terminals, which help reduce shipping costs, they are increasingly popular. The US patent application number US4846088 discloses a method of transporting compressed natural gas, which is provided with storage containers on or above the deck of an offshore barge, including many pressure bottles formed by pipeline pipes horizontally placed on the deck of the barge. The disadvantage of this transportation method is that the number of pressure bottles is limited, because these pressure bottles are placed above the deck. In order to maintain sufficient stability...

AI Technical Summary

Problems solved by technology

Although this structure reduces the risk of possible natural gas leakage, the structural safety of the storage tank directly suspended on the extension hub by means of the side wall is poor, especially when the up and down or left and right swings are large, on the one hand, it may cause sealing Failure, on the other hand, due to the effect of inertia, the storage tank cannot perform displacement compensation according to the sway of the hull, and the force applied to the deck or side enclosure is relatively large, resulting in failure of the support

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