KR20130077545A - Anti-sloshing apparatus - Google Patents

Abstract

PURPOSE: An anti-sloshing apparatus is provided to guide a buoyancy block up and down with coupling a rope with a guide part at the buoyancy block, thereby preventing a peripheral portion thereof from overturning. CONSTITUTION: An anti-sloshing apparatus includes a guide part (160) and a rope (200). The guide part is formed on at least one side of at least one peripheral buoyancy block at the peripheral portion of the apparatus. Both ends of the longitudinally extended rope at the guide part are respectively coupled to the upper and the lower side of a liquid cargo storage tank. The rope restrains the motion of the peripheral buoyancy block. [Reference numerals] (AA) First direction; (BB) 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 transfer liquid cargoes such as liquefied natural gas (LNG), liquefied petroleum gas (LPG), and crude oil (crude oil), hulls are manufactured according to the characteristics of each cargo. Special types of liquid cargo storage tanks have been applied to keep them sealed and 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 has proposed in Korean Patent No. 1043622 (Prior Art 1) a plurality of buoyant bodies having buoyancy to float on the surface of liquid, an open cell ) Structure and includes a foam member surrounding the buoyancy member and connecting means for connecting the adjacent buoyancy members to each other.

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

However, since the sloshing suppressing device disclosed in the prior document 1 is formed to have a large area on the liquid cargo, the buoyancy blocks positioned around the sloshing suppressing apparatus by the swelling of the liquid cargo during floating on the liquid cargo are suppressed. The problem of folding over buoyancy blocks located in the center of the device may arise.

Prior Art 1: Korean Patent No. 1043622

One embodiment of the present invention is to provide a sloshing suppression apparatus having a structure that the buoyancy block formed on the periphery of the sloshing suppression apparatus does not fold onto the buoyancy block in the center.

According to an aspect of the present invention, there is provided a sloshing suppression device comprising a plurality of buoyancy blocks and connecting means for interconnecting the plurality of buoyancy blocks, which may be suspended on the surface of the liquid cargo inside the liquid cargo storage tank, A guide portion formed on at least one side of at least one of the circumferential buoyancy blocks located at the circumference of the sloshing suppression device among the buoyancy blocks of the guide portion and the guide portion, both ends of which are upper portions of the liquid cargo storage tank. And it includes a rope extending in the vertical direction to be coupled to the lower side, wherein the circumferential buoyancy block is provided with a sloshing suppression device, characterized in that the movement is constrained to the rope installed in the guide portion.

At this time, the buoyancy block, 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.

At this time, the buoyancy block may be formed in a hexahedral shape.

At this time, the connecting means is provided on the buoyancy block so as to cross the surface of the buoyancy block. And a coupling member connecting the connection belt of the buoyancy block and the connection belt of another buoyancy block adjacent to the buoyancy block.

At this time, the connecting belt may be arranged crosswise on the upper and lower surfaces of the buoyancy block.

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 buoyancy block.

In this case, the fastening member may include a pair of unit fastening members having a curved shape such that both ends are respectively inserted into adjacent pairs of the connecting rings, and the pair of unit fastening members face each opposite end thereof. And may be fastened to each other.

At this time, the guide portion is coupled to one side of the cover of the circumferential buoyancy block, has a hole open in the vertical direction, the rope may be formed to pass through the hole.

In this case, the guide portion may be formed of the same material as the cover.

At this time, the cover and the guide portion may be formed of a cloth member of a material that can have the same durability as at room temperature even in cryogenic temperatures.

On the other hand, the guide portion includes a side engaging portion coupled to surround the entire four sides of the circumferential buoyancy block and a protrusion formed on one side of the circumferential buoyancy block, the end of the protrusion hole through which the rope This can be formed.

In this case, the protrusion may be integrally formed with the side coupling portion.

At this time, the guide portion may be manufactured using a band formed of the same material and shape as the connecting belt.

In this case, the protruding portion may include a ring portion forming the hole and a connection portion connecting the ring portion and the side coupling portion.

At this time, the ring portion and the connecting portion may be coupled by stitching the thread in the folded or overlapping state so that the thickness of the ring portion and the connecting portion is thicker than the thickness of a single strip.

On the other hand, the rope is provided with a ring at both ends, the ring may be coupled to the protruding member protruding from the upper portion and the lower portion of the liquefied natural gas storage tank.

The ring may be coupled to the protruding member by having a screw thread inside so as to be coupled to the protruding member, or by engaging a nut so that the ring does not come out of the protruding member while being fitted to the protruding member.

At this time, the ring formed at the end of the rope may be made of a plurality.

At this time, the length of the rope may be formed longer than the length from one side of the upper portion of the liquid cargo storage tank to which the rope is coupled to the one side of the lower portion.

At this time, the guide portion may be formed on at least one side of all the circumferential buoyancy block located in the circumference of the sloshing suppression device.

At this time, the guide portion may be formed on at least one side of the buoyancy block located at the corner of the liquefied natural gas storage tank of the circumferential buoyancy block located at the circumference of the sloshing suppression device.

In the sloshing suppressing apparatus according to an embodiment of the present invention, the guide portion formed in the buoyancy block positioned at the circumference of the sloshing suppressing apparatus is coupled to the rope so that the buoyancy block is guided in the up and down direction so that the circumferential portion of the sloshing suppressing apparatus is reversed. Losing can be prevented.

1 is a perspective view of a sloshing suppression apparatus according to an embodiment of the present invention.
2 is a side view of the sloshing suppression apparatus according to an embodiment of the present invention.
3 is a plan view of a sloshing suppression apparatus according to an embodiment of the present invention.
4 is an enlarged view of a portion A in FIG. 3.
5 is a perspective view of a buoyancy unit constituting a sloshing suppression apparatus according to an embodiment of the present invention.
6 is a partially cutaway perspective view of the buoyancy block constituting the buoyancy unit.
7 is a view showing a state in which the fastening member of the sloshing suppression apparatus is coupled to the connecting belt according to an embodiment of the present invention.
8 is a perspective view showing a state in which a rope is installed on the circumferential buoyancy block of the sloshing suppression apparatus according to an embodiment of the present invention.
9 is a perspective view illustrating another example of a guide unit installed in a circumferential buoyancy block of the sloshing suppressing apparatus according to an embodiment of the present invention.
10 is a side view showing the end of the rope of the sloshing suppression apparatus according to an embodiment of the present invention.
11 is a side view showing an example in which the rope of the sloshing suppression apparatus according to an embodiment of the present invention is coupled to the stud bolt of the liquefied natural gas storage tank.
12 is a side view showing another example in which the rope of the sloshing suppression apparatus according to an embodiment of the present invention is coupled to the stud bolt of the liquefied natural gas storage tank.

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 perspective view of a sloshing suppression apparatus according to an embodiment of the present invention. 2 is a side view of the sloshing suppression apparatus according to an embodiment of the present invention. 3 is a plan view of a sloshing suppression apparatus according to an embodiment of the present invention.

As shown in FIGS. 1 to 3, the sloshing suppression apparatus according to the present embodiment includes a liquid cargo storage tank having a buoyancy unit 100 disposed on the liquid cargo 2 stored in the liquid cargo storage tank 1. In the interior of 1), as seen in FIG. 3, the upper portion of the liquid cargo 2 of the liquid cargo storage tank 1 is configured to be interconnected in a side by side arrangement in a first direction and a second direction perpendicular to the first direction. It is made to float on the surface.

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 100 may not be installed in some areas so as not to collide with the corner portion of the liquid cargo storage tank 1 or the like.

According to this embodiment, the sloshing of the liquid cargo 2 can be effectively suppressed by the plurality of buoyancy units 100 suspended on the liquid cargo 2 stored in the liquid cargo storage tank 1 of the ship. Can be.

At this time, according to an embodiment of the present invention, the guide portion is provided in the buoyancy block 110a (hereinafter referred to as a 'circumferential side buoyancy block') of the buoyancy unit 100 located around the sloshing suppression apparatus 10. A 160 is formed, and the guide part 160 is provided with a rope 200 having end portions coupled to upper and lower sides of the liquefied natural gas storage tank 1.

At this time, the guide portion 160 may be formed on one side of all the circumferential buoyancy blocks 110a of the sloshing suppression apparatus 10, and each guide portion 160 may be provided with a rope 200. have.

2 and 3, the guide portion is formed only at the circumferential buoyancy block 110a positioned at the four corner portions of the sloshing suppression apparatus 10 having a rectangular shape as a whole. The rope 200 may be installed in the guide part installed in the circumferential buoyancy block 110a located.

Accordingly, in the sloshing suppressing apparatus 10 according to an embodiment of the present invention, the guide portion 160 of the circumferential buoyancy block 110a of the sloshing suppressing apparatus 10 is an inner wall of the liquid cargo storage tank 1. Since the movement is constrained to the rope 200 located adjacent to the buoyancy block 110 in which the circumferential buoyancy block 110a of the sloshing suppressing device 10 is located inside the circumference of the sloshing suppressing device 10. The phenomenon that the sloshing suppression device 10 is inverted by rising to the upper side of the) can be prevented.

In addition, the sloshing suppression apparatus 10 according to an embodiment of the present invention, when the amount of the liquid cargo 2 increases or decreases inside the liquid cargo storage tank 1, when the height of the water surface of the liquid cargo 2 varies. The circumferential buoyancy block 110a of the sloshing suppressor 10 can move along the rope in the up and down direction of the liquefied natural gas storage tank.

Hereinafter, the configuration of the sloshing suppression apparatus 10 according to an embodiment of the present invention will be described in more detail with reference to the drawings.

4 is an enlarged view of a portion A in Fig. 5 is a perspective view of a buoyancy unit constituting a sloshing suppression apparatus according to an embodiment of the present invention. 6 is a partially cutaway perspective view of the buoyancy block constituting the buoyancy unit. 7 is a view showing a state in which the fastening member of the sloshing suppression apparatus is coupled to the connecting belt according to an embodiment of the present invention.

4 to 6, the buoyancy block 110 has a buoyancy to float on the liquid cargo 2 stored in the liquid cargo storage tank 1, and more specifically, as shown in FIG. 6, A buoyancy body 112 having a buoyancy for floating in the liquid cargo, a foam member 114 surrounding the buoyancy body 112, and a cover 116 surrounding the foam member 114 may be made.

As shown in FIGS. 5 and 6, the buoyancy block 110 may have a cube shape or a rectangular parallelepiped shape having a length of 1.0 to 1.5 m in height, a height of 1.0 to 1.5 m, The size and shape can be variously changed depending on the size.

As shown in FIG. 6, the buoyancy body 112 may have a spherical shape, or may be formed of an ellipsoid or various other structures.

The buoyant body 112 may have buoyancy to float on the liquid cargo 2 and may be filled with gas so that the liquid which is not converted into liquid phase even when the liquid cargo 2 is LNG, As shown in Fig.

The buoyant body 112 may have buoyancy due to such structural characteristics, and may have buoyancy depending on the characteristics of the material.

The buoyant body 112 may be made of a material having such a strength that the shape is not changed by the buoyant force. In order to sufficiently perform its function even in the cryogenic temperature state by the liquid cargo 2 such as LNG, Alloy.

On the other hand, the buoyant body 112 may be a structure including a gas.

At this time, the buoyant body 112 may have a hollow structure having an airtight space so that a gas, which is not converted into a liquid phase at a cryogenic temperature, can be filled therein when the liquid material 2 is LNG.

On the other hand, the buoyancy body 112 may have a buoyancy due to such a structural characteristic, but may also have a buoyancy by the characteristics of the material, as another embodiment of the present invention the buoyancy body 112 is a closed cell ( CLOSED CELL) may be made of a foam material. In this case, the foam may be made of at least one of expanded polyethylene foam, expanded polypropylene foam, and expanded polyurethane foam.

At this time, the closed cell structure means a structure in which no hole is formed through which the fluid can pass through the inside and the outside of the foam material structure, and the structure is such that the liquid material 2 can not permeate. That is, the buoyancy body 112 does not have a hollow structure but the buoyancy body 112 itself may be made of a foam material having a closed cell structure.

Even if a crack is generated on the surface of the buoyant body 112 due to a thermal load or a compressive load due to the buoyant body 112 made of the foamed material of the closed cell as described above, 2) does not permeate, the buoyant body can maintain the buoyancy stably.

As shown in FIG. 6, the foam member 114 surrounds the outer surface of the buoyancy body 112, and the overall shape may be formed of a cube.

In this case, the foam member 114 may have an open cell structure to more effectively prevent sloshing by infiltrating the liquid cargo 2.

Here, the open cell structure has a structure in which a hole penetrating the inside and the outside of the foam member 114 is formed on the outer circumferential surface, so that the surface area of the foam member 114 can be maximized, . ≪ / RTI >

As such, the foam member 114 is formed in an open cell structure so that the liquid cargo 2 penetrates into the foam member 114, so that the buoyancy block 110 floats in a state in which the liquid cargo 2 is partially submerged. The free face of the cargo 2 is covered, so that sloshing by the liquid cargo 2 in the liquid cargo storage tank 1 can be more effectively suppressed.

 The foam member 114 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 at which the liquid material 2 such as LNG maintains the liquid phase, , A melamine resin, and a synthetic resin thereof.

 As shown in FIG. 6, the cover 116 surrounds the foam member 114, thereby preventing the foam member 114 from breaking, and because of the debris of some damaged foam member 114. 2) can also prevent contamination.

 The cover 116 may be made of a material having durability at room temperature even at a very low temperature, and may be made of, for example, polyarylate fiber.

 4 and 5, the connecting belt 122 may be installed on the buoyancy block 110 surface to cross the surface of the buoyancy block 110. More specifically, the connecting belt 122 may be installed on the upper and lower surfaces of the buoyancy block 110, respectively, as shown in Figure 5, passing through the center of the upper and lower surfaces of the buoyancy block 110 Can be installed.

 The connection belt 122 is not simply installed at the end of the buoyancy block 110 or at the local area of the buoyancy block 110, but as described above is installed across the surface of the buoyancy block 110 to provide a buoyancy block 110. ) And the coupling area between the connecting belt 122 is maximized, so that the load acting on the interface between the connecting belt 122 and the buoyancy block 110 by the flow of the buoyancy block 110 is applied to the surface of the buoyancy block 110. It can be distributed evenly, and consequently, the structural stability of the sloshing suppressing device 10 can be significantly improved.

The connection belt 122 is made of the same material as the cover 116 of the buoyancy block 110 and may be installed on the cover 116 of the buoyancy block 110 by sewing or the like. And may be installed on the surface of the buoyancy block 110 by using the buoyancy block.

In this case, as shown in FIG. 5, the connecting belt 122 may be disposed in a pair such that the pair of connecting belts 122 cross each other, and the crossed pair of connecting belts 122 may be arranged in FIG. 5. As shown in, may be installed on the upper and lower surfaces of the buoyancy block 110, respectively.

As the connection belt 122 is installed in this way, as shown in FIG. 2, the plurality of buoyancy blocks 110 arranged in a lattice structure may be effectively connected in the first direction and the second direction.

In addition, as shown in FIG. 5, the connecting belt 122 may be formed of a pair of unit belts, and the unit belts may be disposed to be parallel to each other and spaced apart from each other by a predetermined interval.

In this way, the pair of unit belts are spaced apart from each other, thereby providing a space for easier coupling of the fastening member 150. This will be described more specifically in the following description of the fastening member 150.

On the other hand, as shown in Figure 5, both ends of the connecting belt 122, the connecting ring 124 may be formed. As shown in FIG. 4, as the fastening member 150 is installed in the adjacent connecting ring 124, the adjacent buoyancy blocks 110 may be connected to each other.

In this case, the connecting ring 124 may be formed by joining a part of the connecting belt 122 with another part while the connecting belt 122 is curved so that a part of the connecting belt 122 faces the other part.

At this time, in one embodiment of the present invention, the unit in which the buoyancy block 110 and the connection belt 122 are coupled may be referred to as a buoyancy unit 100. The buoyancy unit 100 may be interconnected by the fastening member 150, so that the sloshing suppression apparatus 10 according to an embodiment of the present invention is the buoyancy unit 100 grating by the fastening member 150 It will be understood that it is formed by connecting in form.

Meanwhile, referring to FIG. 7, the fastening member 150 may connect a pair of adjacent connection rings 124 to each other such that adjacent buoyancy blocks 110 are connected to each other.

Meanwhile, as illustrated in FIG. 7, the fastening member 150 may include a pair of unit fastening members 152 disposed to be symmetrical to each other.

That is, as shown in FIG. 7, the fastening member 150 may include a pair of unit fastening members 152 having a curved shape so that both ends thereof can be inserted into adjacent pairs of connecting rings 124, respectively. In addition, the pair of unit fastening members 152 may be disposed so that both ends thereof are opposed to each other by a connecting member 154 such as a bolt.

More specifically, the pair of unit fastening members 152 may have a 'U' shape, as shown in FIG. 7, and both ends of the pair of unit fastening members 152 are connected to a pair of adjacent ones. The ring 124 may be inserted from top to bottom and bottom to top with reference to FIG. 7.

Both ends of the pair of unit fastening members 152 inserted into the pair of adjacent coupling rings 124 in this way, as shown in FIG. 7, are spaced apart from each other by the pair of connecting belts 122. The pair of unit fastening members 152 may be easily fastened by a connecting member 154 such as a nut in such a space.

Meanwhile, according to the exemplary embodiment of the present invention, a cover member (not shown) may be installed on the fastening member 150 so that the fastening member does not come into contact with the liquid cargo storage tank.

Meanwhile, in the embodiment of the present invention, a pair of U-shaped unit fastening members are exemplified as the fastening members for connecting the buoyancy block and the buoyancy block or the buoyancy block and the buffer block, but the fastening member is not limited thereto, It is also possible to connect the connecting belt by using a ring-shaped connecting member in the form of a key ring, or to connect the buoyancy block or the buffer block by using a connecting member of the same material as the belt.

On the other hand, in one embodiment of the present invention, but the connection belt 122 and the fastening member 150 is used as a connecting means for connecting the buoyancy block 110, each other, such as Velcro tape, zipper to connect the buoyancy block to each other It is also possible to use known connection means.

The guide part 160 and the rope 200 are installed in the circumferential side buoyancy block 110a of the buoyancy block of the sloshing suppression apparatus having the above configuration. Hereinafter, the configuration of the guide unit 160 and the rope 200 will be described in more detail with reference to the drawings.

8 is a perspective view showing a state in which a rope is installed on the circumferential buoyancy block of the sloshing suppression apparatus according to an embodiment of the present invention. 9 is a perspective view illustrating another example of a guide unit installed in a circumferential buoyancy block of the sloshing suppressing apparatus according to an embodiment of the present invention. 10 is a side view showing the end of the rope of the sloshing suppression apparatus according to an embodiment of the present invention. 11 is a side view showing an example in which the rope of the sloshing suppression apparatus according to an embodiment of the present invention is coupled to the stud bolt of the liquefied natural gas storage tank. 12 is a side view showing another example in which the rope of the sloshing suppression apparatus according to an embodiment of the present invention is coupled to the stud bolt of the liquefied natural gas storage tank.

Referring to FIG. 8, the guide part 160 is installed on the side surface of the sloshing suppression apparatus 10 that faces the outward direction of the buoyancy block 110a.

At this time, the guide portion 160 is formed of the same material as the cover forming the buoyancy block 110, for example, both sides 162 of the square-shaped fabric made of polyarylate (polyarylate) fibers polyarylate ( Using a yarn formed of polyarylate) fibers can be stitched or bonded to the side of the circumferential buoyancy block (110a).

At this time, the guide portion 160 has an open hole 165 through which the rope can pass in the vertical direction. According to one embodiment of the invention, the hole 165 is formed in the space between the central portion 164 of the square-shaped fabric forming the guide portion 160 and the side surface 111 of the buoyancy block 110a.

At this time, the hole 165 may be formed to have a size that allows the rope 200 to move in the vertical direction.

In the present embodiment, the guide portion 160 is formed using a cloth of the same material as that of the cover of the buoyancy block 110a, but the guide portion 160 may be formed of a rigid member made of metal capable of maintaining rigidity in a cryogenic state. have.

On the other hand, the rope 200 is installed in the guide portion 160 extends in the vertical direction, at this time, is formed to pass through the hole 165 formed in the guide portion 160.

On the other hand, the guide portion, as shown in Figure 9, may be formed by combining the band formed in the same material and form as the connecting belt in the transverse direction to the side of the circumferential buoyancy block (110a).

Referring to FIG. 9, the band forming the guide portion 160 ′ is one of the side engaging portion 166 and the circumferential buoyancy block 110a, which are coupled to completely cover all four sides of the circumferential buoyancy block 110a. It may include a protrusion 167 formed in the central portion of the side.

At this time, the protrusion 167 may be integrally formed with the side coupling portion 166 as part of the strip. At this time, the protruding portion 167 includes a ring portion 168 forming the hole 165, and a connecting portion 169 connecting the ring portion 168 and the side coupling portion 166. The rope 200 may penetrate the hole 165 in the vertical direction.

At this time, the ring portion 168 of the guide portion 160 ′ may be, for example, bent to form a ring shape.

At this time, the polyarylate fiber in a state where the bands are folded or overlapped so that the thickness of the ring part 168 and the connection part 169 forming the hole 165 is greater than, for example, twice the thickness of a single band. Stitched by coupling to the thread consisting of the reinforcement of the rigidity by which the ring portion 168 and the connecting portion 169 can withstand the wear well.

As such, the guide part 160 ′ formed using the belt may not apply a load locally to the cover.

Meanwhile, referring to FIGS. 8 and 10, the rope 200 is a single rope by twisting a rope strand having a small diameter of 5 to 6 strands formed of a material capable of maintaining flexibility even at cryogenic temperature, for example, polyarylate. The body 210 may be formed.

At this time, each strand is separated at both ends of the rope 200, and the ends of the separated strands are formed with a ring 220. The loop 220 of the rope 200 may be coupled to the protruding member 6 protruding from the inner wall of the liquefied natural gas storage tank 1 as shown in FIGS. 11 and 12. The protruding member 6 may be, for example, a stud bolt.

A plurality of protruding members 6 are arranged side by side in the horizontal direction at the upper edge, lower edge and bottom of the inner wall of the liquefied natural gas storage tank 1.

Therefore, both ends of the rope 200 passing through the hole 165 of the guide portion 160 of the circumferential buoyancy block 110a of the sloshing suppression apparatus 10 according to the embodiment of the present invention are stored in the storage tank ( 1) It is coupled to each of the protruding member 6 formed in the upper edge portion and the lower edge portion of the inner wall to maintain the rope 200 extends in the vertical direction.

According to one embodiment of the invention, the end of the rope 200 is formed with a ring 220 may be coupled to the protruding member 6 located in the side wall as shown in FIG.

In this case, the rope 200 may be formed to be coupled to two or more protruding members 6a and 6b respectively formed on the side wall and the bottom surface as shown in FIG. 12. As such, when a plurality of rings 220 formed at the end of the rope 200 are formed, the load that can be applied to the rope 200 when the sloshing suppressing device 10 moves is distributed when transmitted to the corner insulation board structure. Can be.

At this time, the ring 220 of the rope 200, as shown in Figs. 11 and 12, the protruding members 6, 6a, in a state that the ring 220 is fitted to the protruding members 6, 6a, 6b. The ring 220 can be coupled to the protruding members 6, 6a and 6b by engaging the nut 8 so that the ring 220 does not escape from the protruding members 6, 6a and 6b on 6b). .

On the other hand, although not shown, in order to couple the ring 220 to the protruding member 6, it is also possible that a thread corresponding to the thread of the protruding members 6, 6a, 6b is coupled to the inside of the ring 220. .

On the other hand, according to one embodiment of the present invention, the length of the rope 200 is formed to be sufficiently longer than the distance between the protruding members of the storage tank upper side corner portion and the lower side corner portion to which the end of the rope 200 is coupled.

The long formation of the rope 200 as described above prevents the load from acting on the sloshing suppressor by the rope when the sloshing suppressor is bent along the bottom and top edges of the liquefied natural gas storage tank and suppresses sloshing. This is to prevent the load from being generated even when the device is bent by sloshing.

In one embodiment of the present invention, the rope is intended to prevent the sloshing inhibiting device from losing the sloshing inhibiting function by being fully or partially folded or curled, so that the rope is sufficiently long to move as the sloshing suppressing device moves. By allowing the load to be gradually generated while loading, it is desirable to prevent the load from being caught not only on the guide portion formed in the circumferential buoyancy block of the sloshing suppression device, but also on the fixing portion of the rope such as the protruding member formed on the corner portion of the liquid cargo storage tank. Do.

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
3 Bottom 4 Pipe
10 Sloshing suppression device 100 Buoyancy unit
110 Buoyancy Block 130 Buoyancy Body
133 Through Hole 114 Foam Member
116 Cover 122 Connecting Belt
124 Hook 150 Fastener
160 guide part 200 rope
220 rings

Claims (20)

A sloshing suppression device comprising a plurality of buoyancy blocks and connecting means interconnecting the plurality of buoyancy blocks, the sloshing suppression device being capable of floating on a liquid cargo surface in a liquid cargo storage tank,
A guide portion formed on at least one side of at least one of a circumferential buoyancy block positioned at a circumference of the sloshing suppressing device among the plurality of buoyancy blocks;
Is installed in the guide portion, both ends include a rope extending in the vertical direction to be coupled to the upper side and the lower side of the liquid cargo storage tank,
The circumferential buoyancy block is a sloshing suppression device, characterized in that movement is constrained to the rope provided in the guide portion.
The method of claim 1,
The buoyancy block comprises:
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;
Sloshing suppression apparatus comprising a cover surrounding the foam member.
3. The method of claim 2,
The buoyancy block is a sloshing suppression apparatus, characterized in that consisting of a cube.
4. The method according to any one of claims 1 to 3,
The connecting means
A connection belt mounted to the buoyancy block to cross the surface of the buoyancy block; And
And a fastening member connecting the connection belt of the buoyancy block and the connection belt of another buoyancy block adjacent to the buoyancy block.
The method of claim 4, wherein
And the connecting belt is crosswise arranged on the upper and lower surfaces of the buoyancy block.
6. The method of claim 5,
Sloshing inhibiting device, characterized in that the connecting ring is formed at both ends of the connecting belt.
The method according to claim 6,
And said linking ring is located at an edge of said buoyancy block.
The method of claim 4, wherein
The fastening member
A pair of unit fastening members having a curved shape so that both ends are respectively insertable into an adjacent pair of the connecting rings,
The pair of unit fastening members are disposed so that both ends thereof are opposed to each other fastening each other.

The method of claim 4, wherein
The guide part is coupled to one side of the cover of the circumferential buoyancy block, and has a hole open in the vertical direction,
And the rope is formed to penetrate the hole.
The method of claim 9,
Sloshing suppression apparatus, characterized in that the guide portion is formed of the same material as the cover.
The method of claim 10,
The cover and the guide portion is a sloshing suppression apparatus, characterized in that formed in a cloth member of a material that can have the same durability at room temperature even at cryogenic temperatures.
The method of claim 9,
The guide portion
A side coupling portion coupled to completely cover all four sides of the circumferential buoyancy block;
Including a protrusion formed on one side of the circumferential buoyancy block,
Sloshing suppression apparatus, characterized in that the hole through which the rope is formed in the end side of the protruding portion.
13. The method of claim 12,
The projection is sloshing suppression apparatus, characterized in that formed integrally with the side engaging portion.
The method of claim 13,
The guide part is a sloshing suppression apparatus, characterized in that manufactured using a band formed of the same material and form as the connecting belt.
The method of claim 14,
The projection
A ring portion forming the hole;
Connection portion for connecting between the ring portion and the side coupling portion
Sloshing suppression device.
16. The method of claim 15,
And the ring portion and the connection portion are formed so as to be stitched together in the folded or overlapping state so that the thickness of the ring portion and the connection portion is thicker than the thickness of the single strip.
The method of claim 1,
The rope has rings at both ends,
And the ring is coupled to a protruding member protruding from an upper side and a lower side of the liquefied natural gas storage tank.
The method of claim 17,
The ring is
A thread is provided on the inner side to be coupled to the protruding member, or
And a nut is coupled to the protruding member so that the ring does not escape from the protruding member in a state of being fitted into the protruding member.
The method of claim 17,
Sloshing suppression apparatus, characterized in that the plurality of rings formed in the end of the rope.
The method of claim 1,
The length of the rope is a sloshing suppression apparatus, characterized in that the length is formed longer than the length from one side of the upper side of the lower portion of the liquid cargo storage tank to which the rope is coupled.

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