KR-20260063714-A - ballast water suction unit for ship

Abstract

A ballast water suction device for a ship is disclosed. A ballast water suction device for a ship according to one aspect of the present invention comprises: a pipe for sucking ballast water in a ballast tank; a suction part connected to the end of the pipe and installed adjacent to the bottom of the ballast tank; and a ballast water control part coupled to be movable in the longitudinal direction of the suction part, wherein a first through hole is formed on one side of the suction part and a second through hole is formed on one side of the ballast water control part, and the amount of ballast water sucked can be controlled by aligning the first through hole and the second through hole in a straight line or staggering them as the ballast water control part moves.

Inventors

• 한유정

Assignees

• 삼성중공업 주식회사

Dates

Publication Date

20260507

Application Date

20241031

Claims (5)

1. Piping for sucking ballast water in the ballast tank; A suction part connected to the end of the above piping and installed adjacent to the bottom of the ballast tank; and It includes a balance water control unit coupled to be movable in the longitudinal direction of the above-mentioned suction part, and A first through hole is formed on one side of the above suction part, and A second through hole is formed on one side of the above-mentioned balance water control unit, and A ballast water suction device for a ship that controls the amount of ballast water sucked by moving the ballast water control unit to align the first through hole and the second through hole in a straight line or to stagger them.
2. In paragraph 1, The above suction part is, A main body part formed with a hollow interior; A ballast water suction device for a ship, comprising a trumpet portion connected to the main body and formed to be inclined so that the inner diameter increases toward the lower side.
3. In paragraph 2, The above-mentioned balance water control unit is, A body portion in the shape of a pipe with a hollow interior; A buoy portion provided to protrude from the outer surface of the body portion and regulating the buoyancy of the ballast water control portion; and It includes a stopper disposed to protrude from the outer surface of the suction part and restricting the rise of the buoy part, A ballast water suction device for a ship, wherein the inner diameter of the body portion is formed larger than the outer diameter of the main body portion of the suction portion, so that the suction portion can be inserted longitudinally into the interior of the body portion.
4. In paragraph 3, The above-mentioned balance water control unit is, It further includes a moving part that moves the above body part, and The above-mentioned moving part is a ballast water suction device of a ship that includes a guide rail that guides the ballast water control part to move along the longitudinal direction of the suction part.
5. In paragraph 4, The above moving part is, It further includes a control unit that controls the position of the above-mentioned ballast water control unit and controls the suction amount of ballast water, and A ballast water suction device for a ship, comprising a control unit that detects the movement of the moving part and further includes a sensor that controls the amount of ballast water suction in real time.

Description

Ballast water suction unit for ship The present invention relates to a ballast water suction device for a ship. Generally, large vessels may be equipped with ballast tanks to maintain balance. These ballast tanks can balance the ship by supplying ballast water, which is seawater, when the cargo is light or empty. Depending on the ship's capacity, the process of ballast water flowing into or being discharged from the ballast tanks can be repeated, ranging from thousands of tons to tens of thousands of tons or more. To this end, a bell mouth is flanged to the end area of the pipe in the ballast tank. The bell mouth can draw in and discharge ballast water to balance the ship during navigation. Such a bell mouth can be positioned along the longitudinal direction within the ballast tank and placed between bulkhead plates that prevent fluid sloshing. Additionally, the bell mouth can be positioned at a predetermined distance upward from the bottom surface of the ballast tank to suck in fluid. Meanwhile, in the case of a general vessel, there is sufficient space around the lower part of the bell mouth, so the bell mouth can smoothly suck in ballast water not only in the full water condition where the ballast tank is sufficiently filled with ballast water, but also in the residual water condition where the ballast water in the ballast tank is reduced. However, in the case of special vessels, due to the strength and functional issues of the vessel, many components are placed on the bottom surface of the ballast tank, making it difficult to secure sufficient suction space around the bell mouth. In other words, when bulkhead plates supported on the bottom surface of the ballast tank must be positioned close to the bell mouth, it is difficult to secure sufficient suction space around the bell mouth. In such cases, there is a problem where pumping efficiency is reduced not only in residual water conditions but also in full water conditions. FIG. 1 is a front view of a ballast water suction device of a ship according to one embodiment of the present invention. Figure 2 is a diagram showing the inflow of equilibrium water under full water conditions. FIG. 3 is a diagram showing the inflow of equilibrium water in a residual water situation. Hereinafter, an embodiment of a ballast water suction device for a ship according to the present invention will be described in detail with reference to the accompanying drawings. In describing with reference to the accompanying drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. Before describing the ballast water suction device (100) of a ship according to one embodiment of the present invention, a ship ballast water treatment system to which the ship ballast water suction device (100) is applied is briefly described. The ship ballast water treatment system described below corresponds to one example of the present embodiment, and the scope of the rights of the present invention is not limited thereby. The ballast water treatment system may include a plurality of double bottom water ballast tanks (not shown) arranged horizontally at the bottom of the ship and a plurality of side ballast tanks arranged vertically at the inner wall of the hull. The arrangement structure and number of double bottom ballast tanks and side ballast tanks can vary significantly depending on the volume of the vessel. A ballast water treatment system may be provided with multiple pumps for supplying seawater ballast water (hereinafter referred to as "fluid") to each ballast tank or for discharging it from each ballast tank to the outside. The multiple pumps may be applied one by one to each ballast tank, or they may be applied in common to some of the multiple ballast tanks. The multiple pumps are connected to a pipe (110) that sucks fluid from within the ballast tank, and a valve may be provided in the pipe. Meanwhile, the ballast water treatment system may be provided with at least one pair of bulkhead plates (20) disposed on the bottom surface (10) of the ballast tank. These bulkhead plates (20) may be plate structures made of metal. Additionally, the bulkhead plates (20) are arranged lengthwise along the length of the ballast tank, that is, along the bow and stern of the ship, to prevent sloshing of the fluid inside the ballast tank. In FIGS. 1 to 3, the upper portion of the bulkhead plate (20) is provided by being bent, but this is merely an example and the shape of the bulkhead plate (20) is not limited to the drawings. A fluid passage hole (30) for fluid flow is formed in the lower portion of the bulkhead plate (20). A pair of such bulkhead plates (20) may be spaced apart from each other, and a ballast water suction device (100) of a ship may be placed between the spaced-apart bulkhead plates (20). Hereinafter, the specific configuration of a ballast water suction device of a ship according to one embodiment of the pres