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Ship energy-saving bulbous bow

A technology for bulbous bows and ships, which is applied in the field of bulbous bows of ships and bows of ships. It can solve the problems of large changes in draft, large changes in speed, and the bulbous bow of the hull cannot meet the energy-saving requirements. Sailing resistance, improved energy saving effect, simple structure effect

Active Publication Date: 2015-04-29
SHANGHAI MERCHANT SHIP DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is: For some types of ships, the speed of the ship changes greatly, and the draft depth also changes greatly, which leads to the bulbous bow of the hull not being able to meet the energy-saving requirements in various situations

Method used

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  • Ship energy-saving bulbous bow
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  • Ship energy-saving bulbous bow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment ( 1

[0022] see image 3 , an energy-saving bulbous bow of a ship, the energy-saving bulbous bow includes several bulbous bow casings of different sizes, wherein the smallest bulbous bow casing 3 is fixed and sealed with the hull; the deck or cabin of the bow part There is a bulbous bow casing storage area 1 inside, and the rest of the bulbous bow casings are stored in this area; the bow is also equipped with a manipulator 4, which grabs the corresponding bulbous bow according to the ship's speed and draft. The bow casing is assembled and replaced outside the smallest bulbous bow casing 3 .

[0023] The manipulator 4 is a hydraulic transmission manipulator.

[0024] A hatch 2 for the manipulator 4 to enter and exit is provided above the bulbous bow.

[0025] see Figure 1-Figure 2 , when the ship is sailing at high speed and deep draft, the bulbous bow casing can be replaced by manipulator operation, so that the length (L), width (B) and height (H) of the effective bulbous bow o...

Embodiment ( 2

[0030] An energy-saving bulbous bow of a ship, the energy-saving bulbous bow includes several bulbous bow casings of different sizes, wherein the smallest bulbous bow casing is fixed and sealed with the hull; the remaining bulbous bow casings are in the middle longitudinal section It is divided into two symmetrical parts, which are stored on both sides of the front part of the hull respectively. When the ship operates to a specific speed and draft, the transmission mechanism extracts the matching bulbous bow cover, and passes through the track on the smallest bulbous bow. , conveyed forward, combined into a complete bulbous bow, and there is a sealing device at the joint of the two parts.

[0031] The number of bulbous bow casings is the same as the number of corresponding combinations of ship speed and draft.

[0032] The above two embodiments all take into account the adaptability of the ship's speed and draft to the size of the bulbous bow of the ship. When the ship sails a...

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Abstract

The invention relates to a ship energy-saving bulbous bow. The energy-saving bulbous bow comprises a plurality of bulbous bow housings of different sizes, wherein the smallest bulbous bow housing (3) is fixedly and hermetically assembled with a hull; a bulbous bow housing storage region (1) is arranged on a deck or in a cabin of a bow part, and the rest bulbous bow housings are stored in the region; the bow part is also provided with a manipulator (4); according to the speed and the draft of the ship, the manipulator is used for grabbing the corresponding bulbous bow to assemble and replace on the outer side of the smallest bulbous bow housing (3). By considering the adaptability of the ship and the draft to the size of the ship bulbous bow, the bulbous bow is adjusted into a proper big one when the ship is sailing at high speed and deep draft and is adjusted into a proper small one when the ship is sailing at low speed and shallow draft so as to meet the different sailing requirements.

Description

technical field [0001] The invention relates to a bow of a ship, in particular to a bulbous bow of a ship, and belongs to the technical field of ship design. Background technique [0002] Research at home and abroad has realized that the wave-making generated by installing a bulbous bow in front of the hull interferes with the wave-making generated by the hull, thereby reducing the wave-making resistance to achieve energy-saving effects. Bulbous bow optimization is a difficult problem in the bow line design in the prior art. [0003] It is well known in the ship field that the big bulbous bow is good for high speed and deep draft, but it is extremely harmful for shallow draft and low speed, and vice versa. Therefore, in the process of designing the size of the bulbous bow, it is necessary to fully consider the draft of the ship and the speed of the ship. [0004] However, for some types of ships, the speed changes greatly, and the draft also changes greatly, which makes th...

Claims

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Application Information

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IPC IPC(8): B63B3/46B63B9/00
CPCB63B1/063Y02T70/10
Inventor 程宣恺刘洋浩张健沈童伟张桂湘
Owner SHANGHAI MERCHANT SHIP DESIGN & RES INST