KR101314817B1 - Anti sloshing apparatus - Google Patents

Abstract

A sloshing suppression device is provided. According to an aspect of the present invention, there is provided a sloshing suppression apparatus comprising a coupling means for interconnecting a plurality of first buoyancy units and a plurality of first buoyancy units, wherein the plurality of first buoyancy units comprise: And are arranged alternately between the first buoyancy units adjacent to each other in the second direction.

Description

Sloshing Suppression Device {ANTI SLOSHING APPARATUS}

The present invention relates to a sloshing suppressing device.

In general, various types of ships are being manufactured to transport liquid cargo by sea. For example, in order to transport liquid cargoes such as liquefied natural gas (LNG), liquefied petroleum gas (LPG), and crude oil, hulls are manufactured according to the characteristics of each cargo. Specific types of liquid cargo storage tanks have been applied to ensure that they are sealed and kept warm.

One of the main load conditions in the production of such hull and liquid cargo storage tanks is the sloshing problem. Sloshing is a phenomenon in which a liquid cargo continuously receives kinetic energy due to movement of the hull, Refers to the behavior of a fluid which causes a strong impact on the inner wall of a storage space (i.e., a liquid cargo storage tank) while rapidly shaking, and such sloshing is considered from the beginning of the production of the hull and the liquid cargo storage tank.

As such, the shape of the hull and the liquid cargo storage tank has been designed to minimize the sloshing caused by the liquid cargo and at the same time to withstand the expected sloshing load. In order to avoid the sloshing load, Shipowners had to accept conditional service conditions with limited cargo load. Nonetheless, due to the uncertainty of the sloshing load, various problems with the damage of unexpected liquid cargo storage tanks continue to arise.

This problem of sloshing has to be solved equally in fuel tanks of space, aviation, and automobile fields as well as in ships. Unlike ships, in the case of spacecraft or aircraft, the fuel tank is caused by a sudden start Rather than merely reinforcing the structure of the fuel tank due to the sudden fluid behavior, it is more important to smooth the supply of the fuel. Therefore, the sloshing problem in the direction of controlling the flow of the liquid cargo- .

In order to solve such a sloshing problem, the applicant of the present invention discloses a plurality of buoyancy bodies having buoyancy to be suspended on the surface of a liquid in Korean Registered Patent No. 1043622 (open document 1), and an open cell to absorb a liquid. It has been proposed a sloshing suppression apparatus having a structure having a structure and a connecting means for connecting the buoyancy body and the adjacent buoyancy body to each other.

At this time, in the sloshing suppression device disclosed in the prior art document 1, an example in which the buoyancy unit including the foam member surrounding the buoyancy member is formed in a cube shape is presented.

However, in the case of using the cube-shaped buoyancy unit set forth in the registered patent, a fastening member for connecting the buoyancy units to each other in the direction of the bow of the ship or in a direction perpendicular thereto with the sloshing suppression device positioned in the liquid cargo storage tank is in a line. Is arranged.

Accordingly, when a force due to the flow of the liquid cargo is applied to the line position where the fastening members connecting the buoyancy units are arranged in a line, the force that the fastening member can be broken can be concentrated at the line position where the fastening members are arranged in a line There is a risk that the fastening member will break or damage the cover surrounding the foam member of the buoyancy unit.

Prior Art 1: Korean Patent No. 1043622

It is an object of the present invention to provide a sloshing suppression apparatus.

Another object of the present invention is to prevent the cover of the fastening member or the buoyancy unit from being easily broken at the line position where the fastening members connecting the buoyancy units of the sloshing suppression device are arranged in a line.

According to an aspect of the present invention, there is provided a sloshing suppression device comprising a plurality of first buoyancy units and fastening means interconnecting the plurality of first buoyancy units, wherein the plurality of first buoyancy units are provided in a first direction and the A sloshing suppression device is provided which is arranged adjacent to each other in a second direction perpendicular to the first direction, and staggered between the first buoyancy units adjacent to each other in the second direction.

In this case, the first buoyancy unit may have a rectangular parallelepiped shape in which the first directional length is longer than the second directional length.

At this time, the first buoyancy unit is provided with a connecting belt which traverses the surface of the first buoyancy unit, and the connecting means connects the connection belt of the first buoyancy unit and another first buoyancy unit And may be formed to connect the connection belt of the buoyancy unit.

At this time, both ends of the connecting belt may be formed with a connecting ring.

At this time, the connecting ring may be located at the corner of the first buoyancy unit.

At this time, the connection belt may be arranged in parallel with the second direction.

At this time, the connection belt may be installed on the upper and lower surfaces of the first buoyancy unit.

At this time, the connection belt may be installed at both corners and a central portion of the first buoyancy unit when viewed in the first direction.

At this time, two connection belts are provided at the center of the first buoyancy unit, and the distance between the two connection belts is twice the distance from the connection belt installed at one corner of the first buoyancy unit to one corner .

At this time, the fastening means includes a pair of unit fastening members that are curved so that both ends can be inserted into the adjacent pair of rings, and the pair of unit fastening members are arranged such that the opposite ends of the unit fastening members face each other And can be fastened to each other.

Meanwhile, the second buoyancy force may be located in an empty space between the plurality of first buoyancy units staggered in the second direction, and the connection belt extending in the second direction to be connected to the first buoyancy unit is installed on the surface. The unit may further include.

In this case, the second buoyancy unit may have a cuboid shape having the same length in the first direction and the second direction.

At this time, the second buoyancy unit may be located at the circumference of the sloshing suppression device.

On the other hand, the first buoyancy unit, a buoyancy body having a buoyancy to be suspended on the surface of the liquid; It may include a foam member surrounding the buoyancy body and absorbing the liquid and a cover surrounding the foam member.

In this case, the buoyancy body may be formed so that the longitudinal section has a circular, square or rectangular shape.

In this case, a plurality of buoyancy bodies may be positioned inside the first buoyancy unit.

In this case, the buoyancy body may be made of a foam material having a closed cell structure or a closed structure in which a predetermined gas is embedded therein.

According to one embodiment of the invention, the fastening member or the cover of the buoyancy unit is not easily broken at the line position where the fastening members connecting the buoyancy units of the sloshing suppressing device to each other are arranged in a line.

1 is a cross-sectional view illustrating a sloshing suppression device according to an embodiment of the present invention installed in a liquid cargo storage tank.
FIG. 2 is a plan view showing a state where a sloshing suppression device according to an embodiment of the present invention is installed in a liquid cargo storage tank. FIG.
3 is a plan view showing a part of a sloshing suppression apparatus according to an embodiment of the present invention.
4 is a perspective view of a first buoyancy unit constituting a sloshing suppressing device according to an embodiment of the present invention.
5 is a plan view of the first buoyancy unit of FIG. 4.
6A and 6B are various examples of cross-sectional views of the buoyancy unit of FIG. 4.
7 is a perspective view of a second buoyancy unit constituting a sloshing suppressing device according to an embodiment of the present invention.
8 is a partial cutaway perspective view of the buoyancy unit of FIG. 7.
9 is a plan view of a fastening member for coupling a buoyancy unit of a sloshing suppressing apparatus according to an embodiment of the present invention.
FIG. 10A is a plan view showing a part of a sloshing suppression apparatus according to an embodiment of the present invention, and FIG. 10B is a plan view showing a part of a conventional sloshing suppression apparatus.
11A is a side view illustrating a state in which a sloshing suppressing device according to an embodiment of the present invention receives a force in a bow stern direction in a liquid cargo.
Fig. 11B is a side view showing a state in which a conventional sloshing suppressing device is forced in a fore and aft direction.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

 1 is a cross-sectional view illustrating a sloshing suppression device according to an embodiment of the present invention installed in a liquid cargo storage tank. FIG. 2 is a plan view showing a state where a sloshing suppression device according to an embodiment of the present invention is installed in a liquid cargo storage tank. FIG. 3 is a plan view showing a part of a sloshing suppression apparatus according to an embodiment of the present invention.

The sloshing suppression apparatus 10 according to the present embodiment includes a buoyancy unit 100 disposed in plural on the liquid cargo 2 stored in the liquid cargo storage tank 1, as shown in FIGS. And fastening means connecting the buoyancy units 100 to each other.

At this time, the buoyancy unit 100 includes a first buoyancy unit 110 and the second buoyancy unit 130 of different types.

In this case, referring to FIG. 2, the first buoyancy units 110 are arranged in a row next to each other in a first direction (lateral direction in FIG. 2), and thus the first buoyancy units are arranged in a row. They are arranged side by side next to each other in a second direction perpendicular to the first direction.

At this time, according to an embodiment of the present invention, as shown in FIG. 3, the first buoyancy units 110 arranged adjacent to each other in the second direction are alternately arranged between the adjacent first buoyancy units 110. do.

In this case, the first buoyancy units 110 are arranged to be staggered from each other. That is, the first buoyancy unit 110 of one of the first buoyancy units 110 and the second buoyancy unit 110 of the first buoyancy unit 110, It means that it is not arranged next to the corner side by side.

At this time, according to an embodiment of the present invention, the first directional end edge of the first buoyancy unit 110 is arranged to be positioned at the center of the first direction of the first buoyancy unit 110 neighboring in the second direction.

At this time, in the sloshing suppressor 10 according to the embodiment of the present invention, the first buoyancy unit 110 has a rectangular parallelepiped shape having a length in the first direction longer than the length in the second direction , And the first buoyancy units (110) of this type are mutually connected by the fastening member (150) while being staggered in the second direction, thereby suppressing sloshing in the liquid cargo storage tank (1) (10) can be formed.

At this time, the first buoyancy unit 110 includes a connecting belt (112 in FIG. 4) installed on the surface of the first buoyancy unit 110. At this time, the connection belts 112 can be coupled by fastening members 150 that fasten the connection belts 112 to each other. A more detailed description of the connection belt 112 and the fastening member 150 of the first buoyancy unit 110 will be described later.

On the other hand, when the first buoyancy units 110 are staggered to form a sloshing suppressing device, when the first direction length of the first buoyancy unit 110 is formed to be twice as long as the second direction length, the liquid as a whole A space corresponding to half of the size of the first buoyancy unit in the first direction is left in the circumference of the sloshing suppression device 10, which may be formed in a rectangular shape having a size slightly smaller than the inside of the cargo storage tank 1. Can be.

As shown in FIG. 2, the sloshing suppression apparatus 10 according to an embodiment of the present invention may be located in an empty space in which the first buoyancy unit 110 may not be located. It may be provided with a second buoyancy unit 130 having a smaller size.

As such, the second buoyancy unit 130 having a smaller size than the first buoyancy unit 110 is provided in a space in which the first buoyancy unit 110 cannot be located, so that the circumference of the sloshing suppressing device 10 is generally square. It may be made in a shape.

At this time, the sloshing suppressing device 10 is not hit by the sloshing suppressing device 10 such as a plurality of pipes 4 and the like for transporting the liquid, for example, LNG, which can be stored in the liquid cargo storage tank 1. The buoyancy unit may not be installed in some areas so as not to collide with the edge of the liquid cargo storage tank 1 or the like.

According to the present embodiment as described above, sloshing of the liquid cargo 2 is effectively suppressed by the sloshing suppressing device 10 suspended on the liquid cargo 2 stored in the liquid cargo storage tank 1 of the ship .

 Hereinafter, each configuration of the sloshing suppression apparatus 10 will be described in detail with reference to the drawings.

4 is a perspective view of a first buoyancy unit constituting a sloshing suppressing device according to an embodiment of the present invention. 5 is a plan view of the first buoyancy unit of FIG. 4. 6A and 6B are various examples of cross-sectional views of the buoyancy unit of FIG. 4.

4 and 5, the first buoyancy unit 110 includes a buoyancy block 120.

The buoyancy block 120 is formed in a rectangular parallelepiped shape as a whole.

4 and 5, the buoyancy block 120 is formed to have a length in the first direction being twice as long as in the second direction in FIG. 5. At this time, the height of the buoyancy block 120 may be the same as the second direction length. Although the first direction length L1 is formed to be twice longer than the second direction length L2 in the present embodiment, the first direction length of the buoyancy block is formed to be three times or four times longer than the second direction length It is also possible to form a length longer than twice as long as it is one time or more.

On the other hand, a connection belt 112 is installed on the upper and lower surfaces of the buoyancy block 120. At this time, the connection belt 112 is installed to cross the surface of the buoyancy block 120 in the second direction.

According to one embodiment of the invention, the connection belt 112 is not simply installed at the end of the buoyancy block 120 or in the localized area of the buoyancy block 120, but across the surface of the buoyancy block 120 So that the contact between the buoyancy block 120 and the connection belt 112 is made wider.

The load acting on the interface between the connection belt 112 and the buoyancy block 120 can be evenly distributed to the surface of the buoyancy block 120 by the flow of the buoyancy block 120, The structural stability of the suppression device 10 can be improved.

The connection belt 112 is made of the same material as the cover 126 of the buoyancy block 120 and can be installed on the cover 126 of the buoyancy block 120 by sewing or the like. And may be installed on the surface of the buoyancy block 120 by using the buoyancy block.

At this time, the connecting belt 112 formed on the upper and lower surfaces of the buoyancy block 120 is arranged in the second direction as seen in FIG. 5, and the amount of the buoyancy block 120 as viewed in the first direction. It is located on the side and the center.

At this time, two connecting belts 112 may be arranged at a distance of d2 from the center, and a center portion between the two connecting belts 112 may form a center position of the buoyancy block 120. [

At this time, the distance d1 between the two connection belts 112 located on both sides of the buoyancy block 120 and both side edges is 1/2 of the distance d2 between the two connection belts 112 at the center portion Lt; / RTI >

Four connection belts 112 are arranged side by side on both the upper and lower sides of the buoyancy block 120 and two connection belts 112 from the upper side center of the buoyancy block 120 are connected to d1 And the two connecting belts 112 are spaced inward by a distance d1 from both side edges of the buoyancy block 120 so that a plurality of first buoyancy units 110 When arranged alternately, the connection between the first buoyancy units 110 arranged adjacent to each other can be made more robust.

On both sides of the connecting belt 112, a connecting ring 114 is formed. The connecting hook 114 may be provided by folding a part of the connecting belt 112 to form an annular shape.

At this time, the link loop 114 may be positioned adjacent the corner of the buoyancy block 120. At this time, the coupling ring 114 is coupled to the coupling member 150 to connect the neighboring first buoyancy units 110 to each other. A detailed description thereof will be described later.

According to one embodiment of the present invention, the buoyancy block 120 may include a buoyant body 122, a foam member 124, and a cover 126.

6A and 6B, one or more buoyancy bodies 122 may be installed in the buoyancy block 120 according to an embodiment of the present invention.

In this case, the buoyancy body 122 may have a spherical or cylindrical shape having a circular cross section as shown in FIG. 6A, or may be elliptical as shown in FIG. 6B, or may have a rectangular cross section although not shown. .

At this time, the buoyant body 122 is a sealed structure in which a gas, which may not be converted into a liquid state even in a storage tank in which a cryogenic liquid such as LNG is stored, such as a light gas such as argon gas, Or a hollow structure.

The buoyant body 122 may be made of a material having a strength such that the shape of the buoyant body 122 is not changed by the buoyant force. The buoyant body 122 may be made of aluminum or an aluminum alloy so as to sufficiently perform its function even in a cryogenic temperature state, .

 Meanwhile, the buoyant body 122 may be formed of a foam material having a closed cell structure in addition to the hollow structure filled with gas. The buoyant body of the foam material having the closed cell structure can be formed such that the liquid itself does not flow into the cell structure even when the buoyancy block is locked in the liquid body, so that the foam itself has buoyancy.

As the buoyant body is made of the foamed material of the closed cell, even if cracks are generated on the surface of the buoyant body due to thermal load, compressive load, or the like, the liquidated body 2 can not penetrate into the buoyant body. Therefore, the buoyant body can stably maintain buoyancy.

For example, the buoyant body may be formed of a polymer material containing any one of a phenol resin, a melamine resin, and a synthetic resin thereof so that the liquid material such as LNG can maintain elasticity even at a cryogenic temperature at which the liquid phase is maintained.

The foam member 124 surrounding the buoyant body 122 may be in the form of a rectangular parallelepiped having a long length in the first direction so as to form the outer shape of the buoyancy block 120.

At this time, the foam member 124 may have an open cell structure to more effectively prevent the liquid cargo 2 from penetrating and sloshing. Here, the open cell structure has a structure in which a hole penetrating the inside and the outside of the foam member 124 is formed on the outer circumferential surface, so that the surface area of the foam member 124 can be maximized, .

Thus, the foam member 124 is formed in an open cell structure, and the liquid cargo 2 is impregnated into the foam member, so that the buoyancy block floats in a state in which the buoyancy block is partially immersed on the surface of the liquid cargo 2, So that sloshing by the liquid cargo 2 in the liquid cargo storage tank 1 can be more effectively suppressed.

The foam member 124 may be made of a polymeric material or the like. For example, it is possible to absorb the liquid material 2 even at a very low temperature where the liquid material 2 such as LNG maintains the liquid phase, , A melamine resin, and a synthetic resin thereof.

The cover 126 wraps the foam member 124, as shown in FIGS. 6A and 6B, thereby preventing the foam member 124 from breaking. Thus, the liquid cargo 2 is prevented from being contaminated by the debris of the partially damaged foam member 124.

The cover 116 may be made of a material having durability at room temperature even at a cryogenic temperature.

7 is a perspective view of a second buoyancy unit constituting a sloshing suppressing device according to an embodiment of the present invention. 8 is a partial cutaway perspective view of the buoyancy unit of FIG. 7.

In the description of the second buoyancy unit 130, detailed description of the same configuration as that of the first buoyancy unit 110 will be omitted and the second buoyancy unit 130 ).

7 and 8, the second buoyancy unit 130 of the sloshing suppression apparatus according to an embodiment of the present invention has a length in a first direction when compared with the first buoyancy unit 110. It includes a buoyancy block 140 made of the same.

The buoyancy block 140 includes a buoyancy body 142, a foam member 144, and a cover 146.

At this time, two connection belts 132 are formed on the upper and lower sides of the buoyancy block 140 so as to extend in the second direction so as to be spaced from the both side edges of the upper side face by d1 as viewed in the first direction . At both ends of the connecting belt 132, a connecting ring 134 is formed.

As shown in FIG. 8, the buoyancy body 142 may be installed in the buoyancy block 140 of the second buoyancy unit 130, similar to the buoyancy block 120 installed in the first buoyancy unit 110. Can be.

At this time, it is preferable that the size of the buoyancy formed by the second buoyancy unit 130 is equal to the size per unit volume of buoyancy formed by the first buoyancy unit 110.

The second buoyancy unit 130 configured as described above may connect the first buoyancy unit 110 to each other adjacently to form a square-type sloshing suppression apparatus 10 as shown in FIGS. 1 and 2. At this time, the first buoyancy unit 110 can be used for filling a part of the circumference of the sloshing suppression device that can not be located.

9 is a plan view of a fastening member for coupling a buoyancy unit of a sloshing suppressing apparatus according to an embodiment of the present invention.

Referring to FIG. 9, when the buoyancy units are to be fastened to each other, the fastening member 150 according to an embodiment of the present invention combines three buoyancy units 101, 102, and 103 into one fastening member 150. Let's do it.

More specifically, the fastening member 150 may be formed of two U-shaped unit fastening members 152. The U-shaped unit fastening member 150 may be coupled to both ends by a connection member 154 such as a bolt.

Referring to FIG. 9, when three buoyancy units 101, 102, 103 are to be fastened, two connecting belts 112a positioned at the center of the first buoyancy unit 101 on the left side with respect to the center of FIG. 9. , 112b), and the connecting belt 112c positioned side by side at the corner of the other first buoyancy unit 102 at the upper right side thereof, and at the lower right side, another first buoyancy unit ( The connecting belt 112d positioned at one corner of the 103 is positioned to be parallel to the neighboring connecting belt 112b.

As shown in FIG. 9, two connecting belts 112a and 112c are positioned at both ends of the pair of unit fastening members 150 while the three buoyancy units 101, 102, 103 are arranged. And through two connecting belts 114b and 114d of the two connecting belts 112b and 112d positioned below and between the two upper and lower connecting belts, respectively. Both ends of 152 are joined using a coupling member 154 such as a bolt.

By doing so, the three buoyancy units 101, 102, and 103 can be fastened together at one time by the single fastening member 150. At this time, the buoyancy unit located on the right side with respect to the center in FIG. 9 may be the second buoyancy unit.

The sloshing suppression device in which the first buoyancy units 110 arranged in a staggered arrangement are arranged to be adjacent to each other by using a fastening process capable of connecting the three buoyancy units at once, It can have a restraining force.

More specifically, as shown in FIG. 10A, when the first buoyancy units 110 arranged in the bow stern direction when the first direction is the bow stern direction are arranged alternately with each other, the plurality of first buoyancy units 110a,... Although the position of the fastening member 150 connecting 110j) is formed on the L1, L2, L3 lines, the central portions of the plurality of first buoyancy units 110a,... 110j are located together on the L1, L2, L3 lines.

Therefore, as shown in FIG. 11A, the forces F1, F2, F3 for lifting the first buoyancy units 110a, ... 110j counterclockwise in the respective lines L1, L2, L3 by sloshing of the liquid cargo. ) Occurs, the forces P1, P2, P3 that the first buoyancy units 110a, ... 110j suppress in the clockwise direction are greater than when the first buoyancy units are not staggered (see FIGS. 10B and 11B). Can be.

More specifically, when the central portion of the first buoyancy unit is not located in the lines L1, L2, L3 as shown in FIG. 10B, the lines L1 ', L2', L3 'are not supported by the first buoyancy unit center portion in FIG. 11B. The forces P1 ', P2', P3 'for suppressing in the clockwise direction are formed smaller than the sloshing suppressing device according to the embodiment of the present invention.

Therefore, according to an embodiment of the present invention, the sloshing suppressing apparatus 10 in which the first buoyancy units 110 arranged in the first direction are staggeredly arranged, Which has a stronger advantage over the sloshing suppressor 10 in which the slits 110 are not staggered.

At this time, in the exemplary embodiment of the present invention, the first direction is illustrated as the bow stern direction, but the first direction may be a direction perpendicular to the bow stern.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1 Liquid Cargo Storage Tanks 2 Liquid Cargo
10 Sloshing suppression device 100 Buoyancy unit
110 first buoyancy unit 112 connecting belt
114 Connecting ring 120 Buoyancy block
122 < / RTI >
126 Cover 130 2nd Buoyancy Unit
132 Connecting Belts 134 Connecting Lines
140 Buoyancy block 142 Buoyancy block
144 foam member 146 cover
150 fastening member 152 unit fastening member
154 connecting member

Claims (17)

A sloshing suppression apparatus comprising a plurality of first buoyancy units and fastening means interconnecting the plurality of first buoyancy units,
Wherein the plurality of first buoyancy units are arranged adjacent to each other in a first direction and in a second direction perpendicular to the first direction and are staggered from each other between first buoyancy units adjacent to each other in the second direction,
The first buoyancy unit is provided with a connecting belt to cross the surface of the first buoyancy unit,
The connecting belt is installed on the upper surface and the lower surface of the first buoyancy unit is arranged in parallel with the second direction, and are installed at both corners and the central portion of the first buoyancy unit in the first direction,
The fastening means is formed to connect the connecting belt of the first buoyancy unit and the connecting belt of another first buoyancy unit adjacent to the first buoyancy unit,
Two connecting belts are installed in the central portion of the first buoyancy unit, and the distance between the two connecting belts corresponds to twice the distance from the connecting belt installed at one corner of the first buoyancy unit to one corner. , Sloshing suppression device.
The method of claim 1,
Wherein the first buoyancy unit has a rectangular parallelepiped shape in which the first directional length is longer than the second directional length.
delete The method of claim 1,
A sloshing inhibiting device, wherein both ends of the connecting belt are formed with a connecting ring.
5. The method of claim 4,
Said linking ring is located at an edge of said first buoyancy unit.
delete delete delete delete The method according to any one of claims 1, 2, 4, and 5,
The fastening means,
A pair of unit fastening members having a curved shape so that both ends are respectively insertable into an adjacent pair of said rings,
Wherein the pair of unit fastening members are arranged so that both ends of the pair of unit fastening members face each other and are fastened to each other.
The method according to any one of claims 1, 2, 4, and 5,
The second buoyancy unit may be located in an empty space between the plurality of first buoyancy units staggered in the second direction and the connecting belt extending in the second direction so as to be connected to the first buoyancy unit is installed on the surface Including more,
Sloshing suppression device.
The method of claim 11,
The second buoyancy unit
Wherein the first direction length and the second direction length are the same in the shape of a cube.
13. The method of claim 12,
The second buoyancy unit is located at a circumference of the sloshing suppressing device.
The method according to any one of claims 1, 2, 4, and 5,
The first buoyancy unit,
A buoyant body having buoyancy to float on the surface of the liquid;
A foam member surrounding the buoyant body and capable of absorbing the liquid;
And a cover surrounding the foam member.
15. The method of claim 14,
The buoyancy body is a sloshing suppression apparatus, the longitudinal cross-section is formed to have a circular, oval or square shape.
15. The method of claim 14,
And a plurality of buoyancy bodies are located inside the first buoyancy unit.
15. The method of claim 14,
The buoyancy body is a closed structure in which a predetermined gas is embedded therein, or made of a foam material having a closed cell structure, a sloshing suppression apparatus.

Images