Apparatus for suppressing sloshing
There is provided an apparatus for suppressing sloshing. An apparatus for suppressing sloshing according to an embodiment of the present invention includes a plurality of buoyant blocks and connecting members connecting the buoyant blocks and can float on a liquid cargo in a liquid cargo storage tank, the buoyant block includes a buoyant body having buoyancy to float on liquid, a first foam member covering the buoyant body and absorbing the liquid, and a first cover covering the first foam member, and the first foam member has through-holes formed through the first foam member.
1. An apparatus for suppressing sloshing that includes a plurality of buoyant blocks and connecting members connecting the plurality of buoyant blocks and can float on a liquid cargo in a liquid cargo storage tank,
wherein a buoyant block of the plurality of buoyant blocks includes:
a buoyant body having buoyancy to float on liquid;
a first foam member covering the buoyant body and absorbing the liquid; and
a first cover covering the first foam member,
wherein each of the connecting members includes:
a pair of first connection belts disposed on the buoyant block, across a surface of the buoyant block, and passing centers of a top and a bottom of the buoyant block; and
a fastening member connecting adjacent first connection belts respectively disposed on the buoyant block and another buoyant block adjacent to the buoyant block, and
wherein first through-holes are formed through the first foam member, in a z direction which is a vertical direction perpendicular to a bottom of the liquid cargo storage tank, the first through-holes extending over a whole length of the first foam member,
a second through-hole is formed through the buoyant body in the z direction, the second through-holes extending over a whole length of the buoyant body,
one of the first through-holes and the second through-hole are connected to each other in a line, and
the second through-hole communicates with the one of the first through-holes.
2. The apparatus of claim 1 , wherein:
third through-holes are formed through the first foam member, in an x direction perpendicular to the z direction, and a y direction perpendicular to the z direction and the x direction.
3. The apparatus of claim 2 , wherein:
at least one or more of the first through-holes are formed,
the one of the first through-holes is formed through a center of the first foam member, and
at least one of the third through-holes are formed through the center of the first foam member.
4. The apparatus of claim 2 , wherein:
fourth through-holes are formed through the buoyant body, in the x direction, and the y direction.
5. The apparatus of claim 1 , wherein:
first connection rings are formed at both ends of the pair of first connection belts.
6. The apparatus of claim 5 , wherein:
the fastening member includes
a pair of unit fastening members bending such that both ends are inserted in a pair of adjacent first connection rings, and
the pair of unit fastening members are coupled to each other with both ends facing each other.
7. The apparatus of claim 1 , further comprising:
a cover member covering the fastening member to prevent contact between the fastening member and the liquid cargo storage tank.
8. The apparatus of claim 5 , wherein:
the fastening member includes a rope passing through a pair of adjacent first connection ring and connecting the first connection rings.
9. The apparatus of claim 8 , wherein:
the rope is a single rope formed by braiding a plurality of pieces.
10. The apparatus of claim 9 , wherein:
one end of the single rope sequentially or alternately passes through adjacent second-row first connection rings of any one buoyant block and then passes through adjacent second-row first connection rings of another buoyant block.
11. The apparatus of claim 10 , wherein:
the rope is formed such that a plurality of first pieces between the second-row first connection rings of any one buoyant block and a plurality of second pieces between the second-row first connection rings of another buoyant block are fastened to each other.
12. The apparatus of claim 1 , wherein:
the fastening member includes a thread connecting ends of a pair of adjacent first connection belt by sewing.
13. The apparatus of claim 5 , wherein:
the fastening member is formed in the shape of a circular ring.
14. The apparatus of claim 1 , wherein:
the buoyant is a structure containing a gas or is made of a foam material having a closed cell structure.
15. The apparatus of claim 1 , wherein:
in at least one buoyant block of the plurality of buoyant blocks each having a side facing the inner wall of the liquid cargo storage tank,
a shock-absorbing block is coupled to the side facing the inner wall of the liquid cargo storage tank.
16. The apparatus of claim 15 , wherein:
the shock-absorbing block includes
a second foam member that absorbs the liquid, and
a second connection belt fastened to the second foam member so that the second foam member is coupled to a side of the buoyant block by the fastening member.
17. The apparatus of claim 16 , wherein:
the shock-absorbing block further includes
a second cover covering the second foam member, and
the second connection belt is fastened to the second cover.
18. The apparatus of claim 16 , wherein:
the second foam member is formed by filling the second cover with a foam member composed of a plurality of particles or by covering a foam member that is a single unit with the second cover.
19. The apparatus of claim 1 , wherein:
the pair of first connection belts disposed on the buoyant block cross each other at the centers of the top and the bottom of the buoyant block.