REINFORCING APPARATUS FOR DOUBLE HULL VESSEL

Abstract

A reinforcing apparatus for a double hull vessel including outer and inner shell platings comprises ropes coupled to the inside of the outer shell plating so as to interconnect a bow and a stern of the vessel in a horizontal direction. The reinforcing apparatus for a double hull vessel includes ropes coupled to the inside of an outer shell plating so as to interconnect a bow and a stern of a vessel in a horizontal direction so that when a concentrated load is applied to the vessel during navigation of the vessel due to an external impact such as a collision between a reef or a ship and the vessel to cause a crack occur on the outer shell plating of the hull, the vessel can be supported in a horizontal direction perpendicular to a load application direction of the vessel, thereby effectively preventing the grown of the crack.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of Korean Patent Application No. 10-2013-0090108, filed on Jul. 30, 2013 in the Korean Intellectual Property Office, which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present invention relates to a reinforcing apparatus for a double hull vessel, and more particularly, to a reinforcing apparatus for a double hull vessel in which when a concentrated load is applied to a double hull vessel including an outer shell plating and an inner shell plating due to an external impact such as a collision between a reef (i.e., rock pile) or a ship and the double hull vessel, the growth of a crack occurring on the outer shell plating of the hull can be effectively prevented.

BACKGROUND ART

In general, a double hull vessel is composed of left and right side shell blocks, left and right bottom blocks, and left and right hopper blocks. The left and right hopper blocks are interposed between the lower ends of the left and right side shell blocks and the both ends of the bottom blocks, and the side shell blocks, the hopper blocks, and the bottom blocks are coupled to each other by welding.

Thereafter, a deck plating is coupled to the upper ends of the coupled right side shell blocks by welding. The side shell blocks, the bottom blocks, and the hopper blocks, which are coupled together constitute the outer shell plating and the inner shell plating spaced part from the outer shell plating.

Korean Patent Registration No. 949566 discloses a reinforcement frame mounted by welding to a straight section of each of an outer shell plating and an inner shell plating of a hull to maintain the strength of the hull. The reinforcement frame has a cross section of a “T” shape so that it is composed of a unit web of a plate shape that is weld-mounted perpendicularly to the straight section of each of the outer shell plating and the inner shell plating of the hull, and a unit web fixing plate that is weld-mounted to the end of the unit web so as to be arranged in parallel with the straight section of each of the outer shell plating and the inner shell plating of the hull.

In case of the conventional T-shaped reinforcement frame, a resistance performance against twisting load or local buckling can be expected. Such a conventional T-shaped reinforcement frame, however, has a limitation in that when a concentrated load is applied to a vessel adopting the T-shaped reinforcement frame during navigation of the vessel due to an external impact such as a collision between a reef or a ship and the vessel, a crack occurring on an outer shell plating of the hull cannot be effectively prevented from being grown.

PRIOR ART LITERATURE

Patent Documents

1. Korean Patent Registration No. 949566 entitled ‘Method for Manufacturing Reinforcement Frame for Double Hull Vessel’

DISCLOSURE OF INVENTION

Technical Problem

Accordingly, the present invention has been made in order to solve the above-described problems occurring in the prior art, and it is an object of the present invention to provide a reinforcing apparatus for a double hull vessel, in which when a concentrated load is applied to the vessel during navigation of the vessel due to an external impact such as a collision between a reef or a ship and the vessel to cause a crack occur on an outer shell plating of the hull, the vessel can be supported in a horizontal direction perpendicular to a load application direction of the vessel, thereby effectively preventing the grown of the crack.

Technical Solution

To achieve the above object, the present invention provides a reinforcing apparatus for a double hull vessel including an outer shell plating and an inner shell plating, wherein the improvement includes a plurality of ropes coupled to the inside of the outer shell plating in such a manner as to interconnect a bow and a stern of the vessel in a horizontal direction.

Preferably, the plurality of ropes may include first ropes coupled to the inside of the outer shell plating in such a manner as to be horizontally spaced apart from a bottom of the vessel at predetermined intervals, and second ropes coupled to the inside of the outer shell plating in such a manner as to spaced apart from each other at predetermined intervals while vertically interconnecting the first ropes.

In addition, preferably, each of the ropes may be made of any one material selected from among wire, aramid fiber, and ultra high molecular weight polyethylene (UHMW-PE).

Advantageous Effects

The reinforcing apparatus for a double hull vessel according to a preferred embodiment of the present invention has the following advantageous effects.

The inventive reinforcing apparatus for a double hull vessel includes a plurality of ropes coupled to the inside of an outer shell plating in such a manner as to interconnect a bow and a stern of a vessel in a horizontal direction so that when a concentrated load is applied to the vessel during navigation of the vessel due to an external impact such as a collision between a reef or a ship and the vessel to cause a crack occur on the outer shell plating of the hull, the vessel can be supported in a horizontal direction perpendicular to a load application direction of the vessel, thereby effectively preventing the grown of the crack.

BRIEF DESCRIPTION OF THE DRAWINGS

The above as well as the other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a view illustrating a coupled state of a reinforcing material for a double hull vessel according to the prior art;

FIGS. 2 and 3 are views illustrating a coupled state of a reinforcing apparatus for a double hull vessel according to a preferred embodiment of the present invention; and

FIG. 4 is a view illustrating the operational state of a reinforcing apparatus for a double hull vessel according to a preferred embodiment of the present invention.

EXPLANATION ON SYMBOLS

100: reinforcing apparatus for a double hull vessel

F: bow

R: stern

OP: outer shell plating

IP: inner shell plating

10: ropes

12: first ropes

14: second ropes

BEST MODE FOR CARRYING OUT THE INVENTION

Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The matters defined in the description, such as the detailed construction and elements, are nothing but specific details provided to assist those of ordinary skill in the art in a comprehensive understanding of the invention, and the present invention is not limited to the embodiments disclosed hereinafter.

FIGS. 2 and 3 are views illustrating a coupled state of a reinforcing apparatus 100 for a double hull vessel according to a preferred embodiment of the present invention, and FIG.

is a view illustrating the operational state of a reinforcing apparatus 100 for a double hull vessel according to a preferred embodiment of the present invention.

The reinforcing apparatus 100 for a double hull vessel according to a preferred embodiment of the present invention includes a plurality of ropes 10 coupled to the inside of an outer shell plating OP in such a manner as to interconnect a bow F and a stern R of a vessel in a horizontal direction.

The inventive reinforcing apparatus 100 is used in a double hull vessel including an outer shell plating OP and an inner shell plating IP, and is composed of a plurality of ropes 10 coupled to the inside of the outer shell plating OP in such a manner as to interconnect the bow F and the stern R of the vessel in a horizontal direction.

As shown in FIG. 4, when a concentrated load is applied to the outer shell plating of the hull during navigation of the vessel due to an external impact such as a collision between a reef or the like and the vessel to cause a crack occur on the outer shell plating, a load of the vessel is exerted in the vertical direction of both sides of the crack and thus the crack can be grown. Thus, the ropes 10 can support the vessel in a horizontal direction perpendicular to a load application direction of the vessel, thereby effectively preventing the grown of the crack. In addition, the time spent for the vessel to be stranded on a reef can be prolonged to promote safety of crew members aboard the vessel.

In particular, the ropes 10 of the reinforcing apparatus 100 for a double hull vessel according to a preferred embodiment of the present invention include first ropes coupled to the inside of the outer shell plating OP horizontally, and second ropes coupled to the inside of the outer shell plating OP vertically to form a net-shape structure.

Referring to FIGS. 2 and 3, the first ropes 12 are coupled to the inside of the outer shell plating OP in such a manner as to be horizontally spaced apart from a bottom of the vessel at predetermined intervals (e.g., about 50 cm) to support the hull of the vessel in a horizontal direction perpendicular to a load application direction of the vessel. On the other hand, second ropes 14 are coupled to the inside of the outer shell plating OP in such a manner as to spaced apart from each other at predetermined intervals (e.g., about 2 cm) while vertically interconnecting the first ropes 12 to effectively disperse an external load applied to the first ropes 12.

In this case, a known coupling means such as an anchor of C-clip shape can be used as a coupling member (not shown) of coupling the first and second ropes 12 and 14 to the outer shell plating OP of the hull. This coupling member securely fixes the ropes 10 to the outer shell plating OP of the hull in a tight contact manner.

In the meantime, each of the ropes 10 of the reinforcing apparatus 100 for a double hull vessel according to a preferred embodiment of the present invention is preferably made of any one material selected from among wire, aramid fiber, and ultra high molecular weight polyethylene (UHMW-PE).

As described above, since the rope 10 of the present invention requires a tensile strength enough to bear a load of the vessel, a rope made of aramid fiber or ultra high molecular weight polyethylene besides a wire rope is used.

The aramid fiber is a synthetic polyaramide whose fiber-forming material has the shape of a long chain. The aramid fiber is a synthetic fiber in which at least 85% of the aramid bonds are attached to aromatic rings. In addition, the aramid fiber has an advantage in that it has high-strength and high-elasticity, is very stable chemically and thermally, and can be woven by a general spinning machine.

Further, the ultra high molecular weight polyethylene (UHMWPE) is a resin that is composed of a high-molecular chain 10-20 times longer than that of a high-density polyethylene (HDPE) and thus has a molecular weight of more than 3×10⁶ g/mol. The UHMWPE enables production of ropes that are excellent in terms of rigidity, abrasion resistance, and durability.

INDUSTRIAL APPLICABILITY

As described above, the inventive reinforcing apparatus 100 for a double hull vessel includes a plurality of ropes 10 coupled to the inside of an outer shell plating OP in such a manner as to interconnect a bow F and a stern R of a vessel in a horizontal direction so that when a concentrated load is applied to the vessel during navigation of the vessel due to an external impact such as a collision between a reef or a ship and the vessel to cause a crack occur on the outer shell plating OP of the hull, the vessel can be supported in a horizontal direction perpendicular to a load application direction of the vessel, thereby effectively preventing the grown of the crack.

Claims

1. A reinforcing apparatus for a double hull vessel including an outer shell plating and an inner shell plating, wherein the improvement comprises a plurality of ropes coupled to the inside of the outer shell plating in such a manner as to interconnect a bow and a stern of the vessel in a horizontal direction.

2. The reinforcing apparatus according to claim 1, wherein the plurality of ropes comprises first ropes coupled to the inside of the outer shell plating in such a manner as to be horizontally spaced apart from a bottom of the vessel at predetermined intervals, and second ropes coupled to the inside of the outer shell plating in such a manner as to spaced apart from each other at predetermined intervals while vertically interconnecting the first ropes.

3. The reinforcing apparatus according to claim 2, wherein each of the ropes is made of any one material selected from among wire, aramid fiber, and ultra high molecular weight polyethylene (UHMW-PE).

4. The reinforcing apparatus according to claim 1, wherein each of the ropes is made of any one material selected from among wire, aramid fiber, and ultra high molecular weight polyethylene (UHMW-PE).