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Mounting and positioning method for bilge keel

A technology for installing positioning and bilge keels, which is applied in transportation and packaging, equipment for reducing ship movement, and ship parts, etc. It can solve problems such as poor anti-rolling effect of ships and improper installation of bilge keels

Active Publication Date: 2017-07-28
SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defect of poor ship anti-rolling effect caused by improper installation of the bilge keel in the prior art, and provide a method for installing and positioning the bilge keel that can better suppress the ship's roll

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  • Mounting and positioning method for bilge keel
  • Mounting and positioning method for bilge keel
  • Mounting and positioning method for bilge keel

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Embodiment Construction

[0020] The present invention will be further described by means of embodiments below in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the described embodiments.

[0021] Such as figure 1 As shown, the installation and positioning method of the bilge keel includes the following steps:

[0022] S1: In the cross-sectional view of the hull, connect the bilge keel installation point H and the roll center point O of the ship;

[0023] S2: The angle formed by the connecting line OH between the installation point H of the bilge keel and the roll center point O of the ship and the baseline BL is the bilge keel positioning angle α, and the baseline BL is the tangent line between the transverse section of the hull and the inner surface of the bottom plate;

[0024] S3: Install the bilge keel according to the positioning angle of the bilge keel;

[0025] Wherein, the height R of the rolling center point from the baseline is calculat...

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Abstract

The invention discloses a mounting and positioning method for a bilge keel. The method comprises the following steps that S1, in a cross section drawing of a hull, a mounting point of the bilge keel and a rolling central point of a ship are connected; S2, the angle formed by a connecting line of the mounting point of the bilge keel and the rolling central point of the ship and a base line is the positioning angle of the bilge keel, wherein the base line is a tangent line of the cross section of the hull and the inner surface of a ship bottom plate; and S3, the bilge keel is mounted according to the positioning angle of the bilge keel. The height R of the rolling central point from the base line is calculated according to the following formula: R=D / 4+T / 2, wherein D is the molded depth, and T is the draft of the ship under the ballast working condition. The operation working condition with the most severe rolling serves as a preferred working condition for determining the positioning angle of the bilge keel so as to determine the positioning angle of the bilge keel, so that severe rolling of the working condition can be restrained in a maximum mode, meanwhile, rolling of other working conditions also can be restrained, and accordingly the bilge keel reaches a good overall rolling reducing effect.

Description

technical field [0001] The invention relates to a method for installing and positioning a bilge keel. Background technique [0002] The ship is most prone to roll at sea, and the amplitude of the swing is the largest. Rolling affects the life and work of the crew, so people always hope to design ships with excellent rolling performance. [0003] Setting the bilge keel can reduce the roll angle of the ship, and the roll period of the ship is also increased. Therefore, all seagoing ships are equipped with a bilge keel. The bilge keel is installed on the bilge of the ship, and its length is roughly 1 / 4 to 1 / 2 times the length of the ship. The bilge keel is to be arranged along the length of the ship, and the trajectory line connecting it to the bilge of the hull is to be consistent with the streamline (installation position of the bilge keel) obtained from the ship model test. As for the installation angle of the bilge keel on the cross section, the current common practice i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B9/00B63B39/06
CPCB63B71/00B63B2039/067
Inventor 甘水来
Owner SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
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