KR101159161B1 - Apparatus for controling rolling for floating body - Google Patents

Abstract

The present invention relates to an apparatus for preventing fluctuation of a seafloat, which is installed on the bottom of the seafloat and spreads downward to trap the fluid and forms a space therein with a certain size, and is provided at the bottom of the cage. It includes a plate that helps to unfold and introduces fluid into the inside, and a drive unit connected to the plate to allow unfolding and folding of the cage. Therefore, the bottom surface is provided with a seafloor containing the rim of the cloth and a plate extending from the rim, and when the seafloat stays in one place, it unfolds vertically downwards to form a uniform space and the fluid within the space. By confining, it has an excellent effect of remarkably reducing the lateral fluctuations by increasing the total mass of the seafloor through the fluid temporarily confined inside the cage when the seafloat is shaken.

Maritime Float, Mobile Harbor, Rolling, Mass

Description

Fluctuation prevention device of marine floatation {APPARATUS FOR CONTROLING ROLLING FOR FLOATING BODY}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a device for preventing the fluctuation of a seafloat, and more particularly, to a device capable of preventing the fluctuation of a float during the anchorage of a seafloat such as a mobile harbor.

Floating Production Repository Units (FSRU) or Natural Gas Storage and Production Equipment (FPSO) Marine structures, such as mobile harbors, which are moving ports, have large square coefficients and have a rectangular central section. These floating structures are vertically and horizontally shaken by waves, and the shaking phenomenon affects work performance and safety. To increase work efficiency and safety, each shake phenomenon should be prevented or suppressed.

On the other hand, there has been known a technical idea for suppressing the above-mentioned fluctuations, such as lateral fluctuations, including marine floating objects and ships. The most widely known is Bilge Keel. The bilge key is a plate-like member attached to the bilge part where the bottom and the side wall of the hull meet. This bilge key will generate a vortex when the ship rolls.

In addition, when the bilge kiil alone as described above does not sufficiently obtain the effect of the roll-over damping will be installed additional equipment such as a roll-up damping tank or pin stabilizer. The attenuation tank uses a U-shaped water tank in the center of the ship to use the resonance phenomenon of the flow inside the water tank. Both passive and active type are used.

Here, the pin ballast is a lateral oscillation damping device that generates additional restoring force and damping force by generating lift on the pin by adjusting the angle of the pin according to lateral agitation by attaching the pin to the bilge.

However, the conventional shake attenuation schemes are additionally expensive when installed, and the shake is partially attenuated, and thus, an apparatus for effectively attenuating and correcting lateral fluctuations in a seafloor is required.

The present invention has been invented to solve the above problems, the object of the plate is to be installed on the lower surface and the lower surface of the rim of the fabric material that can confine the fluid on the bottom during the operation of the offshore floating plate having a plurality of perforations When the top remains remain in one place, the plate falls and the cage extends vertically, trapping a certain amount of fluid inside the cage, thereby increasing the total mass of the marine float and preventing lateral fluctuations. It is to provide an apparatus for preventing fluctuations of the marine floatation.

In order to achieve the above object, according to the present invention, is installed on the bottom surface of the sea floating material to expand downward while forming a space of a certain size therein and the confinement to trap the fluid, installed on the lower end of the confinement And a drive unit which is connected to the plate and is installed to be connected to the plate to allow the expansion and folding of the cage, and the cage and the plate are housed in an enclosure provided at the bottom of the marine float during operation of the marine float. It provides an apparatus for preventing the fluctuation of the sea floating material to be located.

And the edging portion can be extended downward to confine the fluid therein in the form of a cylinder or polygonal column, the edging portion can be made of genius.

In addition, a plurality of perforations may be formed to allow fluid to flow into one example of the plate, or another example of the plate may be opened in a lattice form.

The driving unit may include a wire connected to the plate, a winding unit for winding or unwinding the wire, and a motor for forward and reverse rotation driving of the winding unit.

In addition, the plate may maintain the same plane as the bottom surface of the marine relics when accommodated in the receiving portion.

According to the seafloat prevention device of the present invention, the bottom surface is provided with a maritime float containing a cloth-like edge and a plate extending from the cage, and when the maritime float stays in one place, the curb portion and the plate face downward. By spreading vertically to create a constant space and confining the fluid in the space, it has an excellent effect of significantly reducing the lateral fluctuations by increasing the total mass of the seafloor through the fluid temporarily confined inside the cage during the fluctuation of the seafloor. .

Hereinafter, one embodiment of the present invention will be described in more detail with reference to the accompanying drawings so that those skilled in the art can easily practice, but this is only an example, the present invention is limited thereto. It doesn't happen.

1 to 2 are partial cross-sectional side view of the apparatus for preventing the shaking of the sea floating material according to an embodiment of the present invention, Figure 3 is a perspective view of the apparatus for preventing the shaking of the marine floating according to an embodiment of the present invention, Figure 4 is 3 is a perspective view of an apparatus for preventing fluctuation of a seafloor according to another embodiment of the present invention.

As shown in Fig. 1 to Fig. 2, the apparatus for preventing fluctuation of the marine floating material of the present embodiment is largely provided at the lower end of the cage 110 and the cage 110 provided on the bottom of the marine float 100. The plate 120 may include a driving unit to enable the unfolding and folding of the cage 110.

Here, the marine floating object 100 is a floating vessel or a floating vessel moored in one place (FSRU: Floating Storage Regasfication Unit (FSRU) or natural gas storage and production equipment ship (FPSO: Floating Production) , Storage and offloading) and mobile harbor.

The bottom surface of the marine relic 100 may be formed with an accommodating portion 102 that forms a predetermined space inwardly to accommodate the confinement portion 110 and the plate 120, the accommodating portion 102 is Depending on the size of the 110 and the plate 120 may be most or part of the bottom surface of the sea floating object 100, the plate 120 is stored on the same side as the bottom surface of the sea floating object 100 is stored in the sea floating object 100 ) Can minimize the resistance during operation.

And the boundary portion 110 is to form a space of a predetermined size while expanding downwards to trap the fluid from the bottom of the sea floating material 100, it may be made of a cloth or corrugated synthetic resin material, if the fabric is waterproof coating Can be.

The cage 110 can be confined therein while having a cylindrical or polygonal pillar shape unfolded downward.

The plate 120 installed at the lower end of the cage 110 may freely fall under its own load to assist the spreading of the cage 110 and allow fluid to flow thereinto be made of metal or synthetic resin.

A plurality of perforations 122 may be formed in the plate 120 as shown in FIG. 3 to allow the inflow of fluid. In another embodiment, the plate 120-1 itself is formed as shown in FIG. 4. An opening may be formed in the form of a lattice.

In addition, the driving unit connected to the plates 120 and 120-1 to enable the unfolding and folding of the cage 110 is provided with a wire 130 connected to the plates 120 and 120-1 and a wire ( It may include a winding unit 132 to be wound or loosened 130, and a motor 134 for driving the winding unit 132 forward and reverse rotation.

A plurality of wires 130 may be installed to be connected to the plate 120, 120-1, for example, may be installed in a pair facing each other in the horizontal and vertical or diagonal direction, the winding 132 is in the form of a roller The wires 130 may be installed to correspond to the wires 130.

Although the motor 134 is not shown, the motor 134 may be controlled through a control unit installed in the marine relics 100.

The act of preventing the fluctuation of the sea floating material composed of such a structure is as follows.

Referring to FIG. 1, the cage 110 and the plate 120 and 120-1 are housed together in the storage unit 102 so that resistance to propulsion force is not generated during the operation of the marine floating object 100. At this time, the wire 130 is wound around the winding part 132, and thus the plates 120 and 120-1 maintain the same plane as the bottom surface of the marine relics 100.

And when the marine floating object 100 is anchored or stayed in one place, the marine floating object 100 may cause agitation depending on the marine conditions.

Therefore, when power is applied to the motor 134, the winding wire 132 is unwound while the winding unit 132 is rotated, the load of the plate 120 (120-1) and the loosening falls by the wire 130 While the cage 110 of the cloth material is unfolded. (See Fig. 2)

The cage 110 is unfolded in a circular or polygonal column shape according to its shape, and fluid, that is, seawater is introduced through the perforation 122 or the grid 120-1 of the falling plate 120. Temporary confinement of the fluid inside the cage 110, thereby increasing the overall mass of the sea floating material 100, so that even if the wave floating in the sea floating material 100 is not easily shaken transversely of the sea floating material 100 Can be prevented.

And again when the operation of the marine floating object 100, the motor 134 is driven in reverse rotation to wind the wire 130 through the winding portion 132, the cage 110 and the plate 120 (120-) 1) may be pulled up to be stored in the receiving unit 102.

Therefore, in the present invention, there is provided a maritime float 100 containing a cage 110 and a plate 120, 120-1 extending from the cage 110 on the bottom surface, the maritime float 100 When staying in this place, the cage 110 and the plate 120, 120-1 is extended vertically downward to create a constant space and to serve to trap the fluid in the space, when the floating of the sea floating object 100 Transverse fluctuations can be significantly reduced by increasing the total mass of the seafloor through the fluid temporarily confined inside the cage 110.

As described above as a specific embodiment of the apparatus for preventing the fluctuation of the sea floating material according to the present invention, this is merely an example, the present invention is not limited to this, and should be construed as having the broadest range in accordance with the basic idea disclosed herein. do. Those skilled in the art can easily change the material, size, etc. of each component according to the application field, and can be combined / substituted the disclosed embodiments to implement a pattern of a timeless shape, but this also does not depart from the scope of the present invention will be. It will be apparent to those skilled in the art that various changes and modifications may be readily made without departing from the spirit and scope of the invention as defined by the appended claims.

1 to 2 is a partial side cross-sectional view of the apparatus for preventing fluctuation of the sea floating material according to an embodiment of the present invention,

3 is a perspective view of the apparatus for preventing fluctuation of the seafloor according to an embodiment of the present invention,

Figure 4 is a perspective view of the apparatus for preventing fluctuation of the sea floating material according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: maritime relics 102: storage

110: edging 120, 120-1: plate

122: perforation 130: wire

132: winding 134: motor

Claims (7)

It is installed on the bottom of the sea floating material and spreads downward, forming a space of a certain size in the form of a cylinder or a polygonal column therein, which is a cloth or corrugated plastic material cage to trap the fluid; A plate which is installed at a lower end of the cage to help the unfolding of the cage and introduces fluid into the plate, and a plurality of perforations are formed or opened in a lattice form; An accommodating part for accommodating the frame part and the plate by forming a predetermined space therein at the bottom of the marine relic; It is connected to the plate and includes a drive to enable the unfolding and folding of the cage, The driving unit includes a plurality of wires connected to the plate, a roller-shaped winding unit for winding or unwinding the wire, a motor for forward and reverse rotation of the winding unit, and a control unit for controlling the motor. When the maritime floating material is moved, the cage and the plate are accommodated in the receiving portion formed at the bottom of the maritime floating material, and the plate maintains resistance when the maritime floating material is operated by maintaining the same plane as the bottom surface of the maritime floating material. Minimize, and when the marine float stays in one place, the plate falls down by its own weight and expands the cage vertically to store the fluid inside the cage to increase the total mass of the marine float so that transverse fluctuations of the marine float can be achieved. Preventing fluctuations in the seafloor that can be prevented. delete delete delete delete delete delete

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