KR20170001603U - Anti-roll apparatus for ship - Google Patents

Anti-roll apparatus for ship Download PDF

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Publication number
KR20170001603U
KR20170001603U KR2020150006988U KR20150006988U KR20170001603U KR 20170001603 U KR20170001603 U KR 20170001603U KR 2020150006988 U KR2020150006988 U KR 2020150006988U KR 20150006988 U KR20150006988 U KR 20150006988U KR 20170001603 U KR20170001603 U KR 20170001603U
Authority
KR
South Korea
Prior art keywords
ship
tube
buoyant body
ballast
ballast tank
Prior art date
Application number
KR2020150006988U
Other languages
Korean (ko)
Inventor
오영교
Original Assignee
현대중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR2020150006988U priority Critical patent/KR20170001603U/en
Publication of KR20170001603U publication Critical patent/KR20170001603U/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/10—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by damping the waves, e.g. by pouring oil on water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/52—Anti-slosh devices

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

More particularly, the present invention relates to a device for reducing the free surface effect generated by the flow of ballast water contained in a ballast tank when a ship is swaying, thereby reducing the rolling sway of the ship The present invention relates to a transverse vibration reducing apparatus for a ship.
To this end, a tube buoyant body which is installed in the ballast tank of the vessel and is floated on the ballast water surface and is formed in a lattice-like structure; And a fixing part fixed to one side of the ballast tank to prevent the flow of the tube buoyant body.

Description

[0001] The present invention relates to an anti-roll apparatus for ship,

More particularly, the present invention relates to a device for reducing the free surface effect generated by the flow of ballast water contained in a ballast tank when a ship is swaying, thereby reducing the rolling sway of the ship The present invention relates to a transverse vibration reducing apparatus for a ship.

Generally, in the sea, the ship is subjected to various movements such as up and down sway and horizontal sway by waves, and such fluctuation acts as a factor that hinders work performance and safety. Such a rollover may cause a sense of discomfort and accumulation of fatigue to the passenger or the crew, and a vessel having a high center of gravity, such as a container ship carrying a container on the upper deck, may be rolled over due to rolling.

Various techniques have been developed to suppress the rolling of such ships.

Various types of ships are equipped with various types of transverse vibration reducing devices according to the characteristics of the ship. In order to reduce the rolling of the ship, typical bilateral vibration reducing devices include a bilge (bilge) , Bilge Keel, which is about one third of the length of a ship, and a fin stabilizer that adjusts the angle of the pin to generate the opposite force against the transverse motion of the hull. Fin Stabilizer), and ART (Anti-Rolling Tank) which suppresses rolling motion by forming a U-shaped water tank inside the hull.

On the other hand, in order to center the vessel by lowering the center of gravity of the vessel, the ballast tank is filled with ballast water, and the ship is operated. Due to the longitudinal strength and the draft limit, the ballast tank is provided with a certain margin. When the shaking motion of the ship occurs due to an external factor, the ballast water poured into the ballast tank may be shaken.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a ballast water flow in a conventional marine ballast tank. FIG.

As shown in FIG. 1, when the ship S oscillates due to an external factor, the ballast water in the ballast tank B flows.

The phenomenon that the liquid in the tank is not filled up and the surface of the vessel S rises due to the flow of the liquid surface is referred to as a free surface effect. The amount of rise of the center of gravity due to such free surface effect is directly The restoring force of the ship S is reduced correspondingly, and the moment of inertia of the free surface is closely related.

In this way, conventionally, the ballast water contained in the ballast tank B is injected or drained during the occurrence of lateral rocking of the ship S, so that the center of gravity of the ship S is lowered to restrain swaying, thereby restoring the ship S However, there is a problem in that it can not cope with the free surface effect and thus adversely affects the improvement of the stability of the ship S.

The present invention has been conceived to solve the above problems of the prior art, and it is an object of the present invention to improve the stability of a ship by attenuating the free surface effect generated by the flow of ballast water contained in the ballast tank when the ship is rolling, It is an object of the present invention to provide a transverse vibration reducing device for a ship capable of reducing the amount of vibration.

Technical Solution In order to achieve the above object, the present invention provides a tube buoyancy body which is installed in a ballast tank of a ship and is floated on a ballast water surface and has a grid-like structure. And a fixing unit fixed to one side of the ballast tank to prevent the flow of the tube buoyancy member.

At this time, the tube buoyant body is divided into two parts, and air is injected into one side and water is injected into the other side.

The fixing portion may include a spring wire connected to one side of the tube buoyancy body; And a magnetic part connected to an end of the spring wire and attached to the ceiling of the ballast tank.

On the other hand, it is preferable that the tube buoyant body is composed of at least two or more tubes.

The above-described apparatus for reducing lateral vibration of a ship according to the present invention has the following effects.

The tube buoyant body configured in a lattice shape is disposed on the ballast water surface of the ballast tank so that the flow of ballast water can be suppressed by the tube buoyant body when the ship is rolling.

Thus, the tube buoyant body is disposed in a lattice shape on the ballast water surface to increase the surface area in contact with the ballast water, thereby suppressing the flow of ballast water, thereby suppressing the free surface effect due to ballast water flow, So that the ship can be restored and restored in a short time.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a ballast water flow in a conventional marine ballast tank. Fig.
Fig. 2 is a plan view of the transverse vibration reducing device of the present invention as viewed from above. Fig.
FIG. 3 is a side view of a ship lateral rocking reduction apparatus according to the present invention. FIG.
Fig. 4 is a view showing an installation state in which the apparatus for reducing lateral movement of a ship is installed on a ship according to the present invention; Fig.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor may properly define the concept of the term to describe its design in the best possible way It must be construed as a meaning and a concept consistent with the technical idea of the present invention based on the principle.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to FIGS. 2 to 4 attached hereto.

FIG. 2 is a plan view of the ship lateral vibration removing apparatus according to the present invention as viewed from above, FIG. 3 is a side view of the ship lateral vibration reducing apparatus according to the present invention, and FIG. 4 is a cross- Is installed on the ship.

2 to 3, the ship lateral vibration suppression apparatus 1 according to the present invention largely comprises a tube buoyancy body 10 and a fixing portion 20.

First, the tube buoyant body 10 is installed in the ballast tank B of the vessel S, and is disposed on the ballast water surface of the ballast tank B in a floated state.

The tube buoyant body 10 has a lattice-like structure at regular intervals, a rim 11 is formed as an outer rim, and a lattice portion 12 And the inner space of the rim portion 12 and the rim portion 11 are formed to communicate with each other.

In addition, the tube buoyant body 10 is preferably made of silicone or rubber to prevent the tube buoyant body 10 from being easily floated on water and being damaged by an impact.

At this time, the rim portion 11 of the tube buoyant body 10 may be circular, elliptical or rectangular.

The grating portion 12 may have a rectangular shape in which the grating portions intersect with each other at right angles to each other with respect to a portion connected to the rim portion 11 at regular intervals, And may be formed in a circular lattice shape.

In this way, the tube buoyant body 10 is installed on the ballast water surface of the ballast tank B so as to increase the surface area in contact with the ballast water, thereby suppressing the ballast water flow.

Referring to FIG. 2, an end of the tube buoyant body 10 is formed with an injection part 13 divided into two parts.

The injection unit 13 has an air injection unit 13a for injecting air into one side and a water injection unit 13b for injecting water on the other side.

That is, the tube buoyant body 10 is for applying a constant load to the tube buoyancy body 10 so as to maintain its position without being easily flowed when it is disposed on the ballast water surface of the ballast tank B.

Although the upper portion of the air injection unit 13a is referred to as an air injection unit 13a, the positions of the air injection unit 13a and the water injection unit 13b may be changed according to circumstances.

On the other hand, the tube buoyancy body 10 is provided with an installation ring 14 for installing a fixing part 20 described later.

The mounting rings 14 are provided in the rim portion 11 or the lattice portion 12, and a plurality of the mounting rings 14 are provided at predetermined intervals.

The tube buoyant body 10 is preferably disposed on the ballast water surface of the ballast tank B and is preferably composed of a plurality of at least two or more depending on the structure and size of the ballast tank B.

In addition, when air or water is injected into the injection part 13 of the tube buoyant body 10, the tube buoyant body 10 is floated above the ballast water surface, The amount of water or air can be selectively adjusted to improve adhesion.

Next, the fixing portion 20 serves to prevent the above-described tube buoyancy member 10 from flowing.

The other side of the fixing part 20 is fixed to one side of the ballast tank B while one side of the fixing part 20 is connected to the mounting ring 14 of the tube buoyancy body 10. [

A spring wire 21 connected to the mounting ring 14 of the tube buoyancy body 10 of the fixing part 20 and a magnetic part 22 fixed to one side of the ballast tank B are also included.

The spring wire 21 is connected to the mounting ring 14 of the tube buoyant body 10 and has a restoring force for restoring it when it is pulled over a predetermined length.

That is, the spring wire 21 has elasticity in the form of a coil, such as a spring.

Accordingly, a plurality of the spring wires 21 may be provided corresponding to the number of the mounting rings 14 of the tube buoyancy body 10. [

Here, the spring wire 21 may include a length adjuster (not shown) capable of adjusting the length thereof.

On the other hand, the magnetic part 22 is connected to the end of the spring wire 21.

The magnet 22 is magnetically connected to one end of the spring wire 21 and the other end of the magnet 22 is attached to the ceiling of the ballast tank B.

Accordingly, the spring wire 21 is attached to the ceiling of the ballast tank B so that the magnetic part 22 can maintain its elasticity.

Further, the magnetic portion 22 may be a permanent magnet or an electromagnet.

The spring wire 21 is installed to be connected to the magnetic part 22 in a state where the spring wire 21 is connected to the mounting ring 14 of the tube buoyant body 10 so that the magnetic part 22 is attached to one side of the ceiling of the ballast tank B The tube buoyant body 10 can not easily move on the ballast water surface, and the installed position of the tube buoyant body 10 can be maintained.

Hereinafter, the operation of the lateral rocking reduction apparatus of the ship described above with reference to FIG. 4 will be described.

First, the tube buoyancy body 10 is placed on the ballast water surface in the ballast tank B of the vessel S.

Then, one side of the spring wire 21 of the fixing portion 20 is connected to the mounting ring 14 of the tube buoyant body 10, and a magnetic portion 22 is provided on the other side of the spring wire 21, (22) is attached to one side of the ceiling of the ballast tank (B).

At this time, the length of the spring wire 21 is adjusted by adjusting the length so as to maintain elasticity in a taut state.

A plurality of the transverse vibration reduction apparatuses 1 of the ship according to the present invention are arranged in various places in the ballast tank B.

In addition, the size of the tube buoyancy body 10 and the length of the spring wire 21 can be applied to the space of each ballast tank B, respectively.

Therefore, when the ball S tends to be swayed by an external factor, the ballast water contained in the ballast tank B is poured or drained in a specific direction to correct the center of the vessel S, At this time, if the ballast water fluctuates, the vibration of the ballast water can be attenuated by the tube buoyant body 10 disposed on the ballast water surface.

In other words, the surface area at which the water surface of the ballast water contacts the tube buoyant body 10 can be increased to suppress the flow of the ballast water, and the tube buoyant body 10 can be formed into a lattice structure, The buoyant body 10 is prevented from bouncing and can be locked on the water surface by a certain amount.

In addition, the fixing portion 20 prevents the tube buoyant body 10 from being easily moved on the ballast water surface.

Meanwhile, the magnet portion 22 of the fixing portion 20 is formed of a magnet having magnetism, and can be easily moved to a desired position by the user.

As described above, the lattice-shaped tube buoyant body 10 is disposed on the ballast water surface of the ballast tank B so that the tube buoyant body 10 can prevent the ballast water from flowing when the ship S rolls. .

Accordingly, the tube buoyant body 10 is arranged in a lattice shape on the ballast water surface to increase the surface area in contact with the ballast water, thereby suppressing the flow of ballast water, thereby suppressing the free surface effect due to ballast water flow, S) of the ship S can be restrained and the ship S can be restored and restored in a short time.

It should be understood, however, that the present invention is not limited to the above-described embodiments, but may be modified and modified without departing from the gist of the present invention, and that such modifications and variations are included in the technical idea of the present invention .

1: transverse vibration reducing device 10: tube buoyancy device
11: rim portion 12: lattice portion
13: injection part 13a: air injection part
13b: water injection part 14: installation ring
20: fixing part 21: spring wire
22: Magnetic part S: Ship
B: Ballast tank

Claims (4)

A tube buoyant body provided in the ballast tank of the vessel and arranged in a floated state on the ballast water surface, the tube buoyant body having a lattice structure; And
And a fixing part fixed to one side of the ballast tank to prevent the flow of the tube buoyant body. The method according to claim 1,
The tube buoyant body may include:
Wherein the inner part is divided into two parts, air is injected into one side, and water is injected into the other side. The method according to claim 1,
The fixing unit includes:
A spring wire connected to one side of the tube buoyancy member; And
And a magnetic part connected to an end of the spring wire and attached to the ceiling of the ballast tank. The method according to claim 1,
The tube buoyant body may include:
Wherein the at least one of the at least two of the plurality of the transverse vibration reducing devices is composed of at least two or more.
KR2020150006988U 2015-10-28 2015-10-28 Anti-roll apparatus for ship KR20170001603U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020150006988U KR20170001603U (en) 2015-10-28 2015-10-28 Anti-roll apparatus for ship

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020150006988U KR20170001603U (en) 2015-10-28 2015-10-28 Anti-roll apparatus for ship

Publications (1)

Publication Number Publication Date
KR20170001603U true KR20170001603U (en) 2017-05-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2020150006988U KR20170001603U (en) 2015-10-28 2015-10-28 Anti-roll apparatus for ship

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107640299A (en) * 2017-09-06 2018-01-30 中远海运重工有限公司 Back-shaped tank stabilizer with fair water fin
KR200487354Y1 (en) * 2017-03-31 2018-09-05 김현준 Garbage bag hanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200487354Y1 (en) * 2017-03-31 2018-09-05 김현준 Garbage bag hanger
CN107640299A (en) * 2017-09-06 2018-01-30 中远海运重工有限公司 Back-shaped tank stabilizer with fair water fin

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