Device for reducing free liquid level and recovering mechanical energy of liquid cargo tank

Abstract

The invention provides a device for reducing the free liquid level and recovering mechanical energy of a liquid cargo tank. The device comprises an oil baffle plate, a sliding block, a rail, a spring,a rectangular belt, a pulley, a belt wheel, a generator, a pulley fixing seat and a shell. The oil baffle is arranged in the liquid cargo tank of a crude oil transport ship; when the ship performs rolling motion, the oil baffle can damp flowing of crude oil, flowing of the crude oil is slowed down, and the influence of free liquid level on stability of the ship is greatly reduced; compared with arrangement of a plurality of longitudinal bulkheads, the device has the advantages that the construction cost required by arrangement of the longitudinal bulkheads can be saved, the number of liquid cargo tanks is reduced, the complexity of crude oil transport ship piping system design is reduced, and the management cost during loading and unloading is correspondingly reduced. Besides, the oil baffle plate of the device can play a role in damping crude oil and can also recover the mechanical energy of the crude oil and convert the mechanical energy into electric energy, so that part of power is provided for an oil tanker.

Description

technical field [0001] The invention belongs to the technical field of ships, and in particular relates to a device for reducing free liquid surface and recovering mechanical energy in liquid cargo tanks. Background technique [0002] A crude oil carrier is a ship specially used to carry crude oil. There are liquid cargo tanks on board. When the rocking motion occurs during sea navigation, especially the rolling motion, since the cargo tank space of the oil tanker is not completely filled with crude oil, the crude oil will flow with the rocking of the tanker. The surface is called the free surface. The free surface mainly affects the stability of the ship. Due to the long length of the ship, the longitudinal stability of the ship is relatively high. The free liquid surface has little effect on the longitudinal stability of the ship, but the width of the ship is relatively small, resulting in the The high lateral stability is small, so the free liquid surface has a great in...

AI Technical Summary

Problems solved by technology

The beam of a large oil tanker is relatively wide. If one longitudinal bulkhead is installed, the effect of reducing the free liquid surface of crude oil is not ideal. If two longitudinal bulkheads are installed, the design complexity of the liquid cargo tank will be increased, and the construction cost will increase accordingly. , piping and related equipment will be more complex

[0003] The Chinese patent of patent No. CN102343969B discloses a liquid tank without free liquid surface. This invention can adjust the position of the hatch cover according to the height of the liquid level in the liquid cargo tank, thereby eliminating the free liquid surface in the liquid cargo tank. Although it provides better Thoughts, but the feasibility and economical efficiency of this invention are relatively poor, the main reasons are as follows: ①The crude oil carrier has a large load capacity, which results in a large length and width of the ship, and the surface area of ​​the free liquid surface of the liquid in the liquid cargo tank is huge, so the application The adjustable hatch mentioned in the invention costs a lot

② During the process of loading and unloading, the process of adjusting the hatch cover to the proper position is relatively complicated and difficult to manage

③This invention does not consider that when the temperature of crude oil changes, a certain clearance volume needs to be left to cope with the change of crude oil volume, so there are certain potential safety hazards

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