JPWO2011058954A1 - Marine organism adhesion prevention apparatus and marine organism adhesion prevention method - Google Patents

Abstract

Provided are a marine organism adhesion prevention device and a marine organism adhesion prevention method capable of efficiently preventing marine organisms from adhering to a ship at low cost. A ballast water treatment device 40 for sterilizing the taken-in ballast water, a sterilized ballast water ejection hole 12, and a pump P1 for ejecting the sterilized ballast water from the ejection hole 12 are ejected. The attached ballast water prevents marine organisms from adhering to the ship 100. The ejection holes 12 are preferably formed in the bottom 15 of the ship 100.

Description

  The present invention relates to an apparatus and method for preventing marine organisms from adhering to a ship.

  Conventionally, marine organisms such as shellfish such as barnacles and seaweeds adhere to ship hulls, engine cooling water paths, propellers, etc., causing problems such as deterioration in running performance and deterioration in durability. For this reason, measures such as periodic removal of attached marine organisms and application of a paint mixed with components such as tin that marine organisms dislike have been taken. However, in order to remove the attached marine organisms, periodic landing is necessary, which is costly, and the toxicity of the paint mixed with components such as tin is a problem.

  On the other hand, focusing on the fact that the attachment of marine organisms occurs mainly during berthing, an invention is disclosed in which adhesion of marine organisms is prevented by ejecting fluid toward the hull. For example, Patent Document 1 describes an invention in which ozone is added to seawater in the immediate vicinity of a hull to kill marine organisms. In addition to ozone, there are those that add chemicals such as cuprous oxide ions and sodium hypochlorite ions, and those that use gases such as air and carbon dioxide. Patent Document 2 describes an invention characterized by a structure such as an ejection pipe for ejecting gas or liquid.

Japanese Patent Laid-Open No. 11-59582 JP 2004-337157 A

  However, in order to kill marine organisms, it is necessary to separately add ozone or a chemical to the fluid to be ejected, as in the invention described in Patent Document 1, since the effect is small by simply ejecting seawater. Further, in the inventions described in Patent Document 1 and Patent Document 2, new power is required to eject fluid.

  Furthermore, marine organisms adhere to the ship not only in the hull, but also in the engine cooling water path and propeller. However, in the conventional invention, it is difficult to prevent adhesion to these multiple locations with a single device. It is. On the other hand, if the hull is completely antifouled by painting, the cost burden is large, such as the need to use expensive paint.

  The present invention solves the above-described conventional problems, and provides a marine organism adhesion prevention device and a marine organism adhesion prevention method capable of efficiently preventing marine organisms from adhering to a ship at low cost. It is.

  The marine organism adhesion prevention apparatus according to the first aspect of the present invention is a ballast water treatment device that sterilizes collected ballast water, a sterilized ballast water ejection hole, and the sterilized ballast from the ejection hole. And a pump for ejecting water, and the ejected ballast water prevents marine organisms from adhering to the ship.

  The invention according to claim 2 is the marine organism adhesion preventing apparatus according to claim 1, wherein the ejection hole is formed in a ship bottom.

  The invention according to claim 3 is the marine organism adhesion prevention device according to claim 1, wherein the ejection hole is formed in an outboard pipe provided around the ship.

  The invention according to claim 4 is the marine organism adhesion preventing apparatus according to claim 1, characterized in that the sterilized ballast water is allowed to pass through a path of engine cooling water.

  The invention according to claim 5 is the marine organism adhesion prevention device according to any one of claims 1 to 4, wherein the pump is at least one of a ballast water pump and an engine cooling water pump. It is characterized by being.

  The marine organism adhesion preventing method of the invention according to claim 6 is characterized in that the ballast water sterilized by the ballast water treatment apparatus is ejected to prevent marine organisms from adhering to the ship.

  According to the marine organism adhesion preventing apparatus of the present invention, the ballast water sterilized by the ballast water treatment apparatus can be efficiently prevented from adhering to the ship by causing the pump to eject the ballast water from the ejection hole. it can. In other words, the ballast water discharged from ships is required to be chemically treated (chemicals, ultraviolet rays, electrolyzed water, etc.) or physical by international conventions of the IMO (International Maritime Organization). By using the ballast water sterilized in this way, it is efficient because it is not necessary to separately prepare a jetting fluid to which a medicine or the like is added.

  Further, by forming the ballast water ejection hole in the ship bottom, the sterilized ballast water can be accurately flowed around the hull. In particular, in the case of a new ship, an ejection hole can be formed in advance at the stage of construction, so that the structure is suitable for a new ship.

  Further, by forming ballast water ejection holes in the outboard pipe provided around the ship, the sterilized ballast water can be accurately flowed around the hull. In particular, in the case of an existing ship, it is difficult to form an ejection hole in the hull later, so the structure is suitable for an existing ship.

  Further, by allowing the sterilized ballast water to pass through the engine cooling water path, it is possible to prevent the attachment of marine organisms in the engine cooling water path. Therefore, the outside of the hull, such as the hull surface and the propeller, and the engine cooling water path inside the hull can be collectively handled by a single device.

  In addition, the ballast water subjected to the sterilization treatment is ejected by at least one of the ballast water pump and the engine cooling water pump, so that it is not necessary to provide new power for ejecting the ballast water, which is efficient.

  Moreover, according to the marine organism adhesion prevention method of this invention, adhesion of marine organisms to a ship can be effectively prevented by ejecting the ballast water sterilized by the ballast water treatment apparatus.

  As described above, according to the present invention, it is possible to provide a marine organism adhesion prevention device and a marine organism adhesion prevention method capable of efficiently preventing marine organisms from attaching to a ship at low cost.

It is a schematic diagram which shows the ship carrying the marine organism adhesion prevention apparatus which concerns on Embodiment 1 of this invention. It is the elements on larger scale which show the ship carrying the marine organism adhesion prevention apparatus which concerns on Embodiment 1. FIG. It is a schematic diagram which shows the ship carrying the marine organism adhesion prevention apparatus which concerns on Embodiment 2 of this invention. It is the elements on larger scale which show the ship carrying the marine organism adhesion prevention apparatus which concerns on Embodiment 2. FIG. It is a schematic diagram which shows the ship which concerns on a prior art example.

  Next, a marine organism adhesion preventing apparatus and a marine organism adhesion preventing method according to an embodiment of the present invention will be described. Initially, the structure of the conventional ship is demonstrated with reference to FIG. FIG. 5 is a schematic diagram showing a ship 300 according to a conventional example, and corresponds to a plan view showing an arrangement of a ballast tank and a ballast water conduit of the ship 300.

  The ship 300 is provided with five ballast tanks 10 on the left and right sides along the ship side. Further, a ballast tank 20 is provided at the bow and a ballast tank 30 is provided at the stern. The ballast tanks 10, 20, and 30 are provided with ballast water inlets 11, 21, and 31, respectively, and are connected to a ballast water conduit 1 indicated by a solid line in the drawing.

  A ballast water pump P <b> 1 is disposed in the middle of the ballast water pipe 1 as power for taking and discharging ballast water. Further, water intake ports 60 and 60 for taking in ballast water and engine cooling water described later, and water discharge ports 42 and 42 for discharging ballast water are provided on the left and right in the vicinity of the stern of the ship 300. Ballast water taken from the water intake ports 60, 60 using the ballast water pump P 1 as power is stored in the ballast tanks 10, 20, 30 via the ballast water conduit 1. Similarly, the stored ballast water is drained from the drain ports 42 and 42 via the ballast water conduit 1 using the ballast water pump P1 as power.

  On the other hand, the ship 300 is provided with an engine cooling water pipe 2 for cooling the engine cooling target device 50 including the main engine, which is indicated by a broken line in the drawing, An engine cooling water pump P <b> 2 is disposed as power for taking and draining water. Further, a drain outlet 52 for draining engine cooling water is provided near the stern of the ship 300. The engine cooling water taken from the water intakes 60, 60 using the engine cooling water pump P2 as power is used for cooling the engine cooling target device 50 via the engine cooling water conduit 2, and then the drain port. It is drained from 52.

  Next, with reference to FIG.1 and FIG.2, the marine organism adhesion prevention apparatus and marine organism adhesion prevention method which concern on Embodiment 1 of this invention are demonstrated. FIG. 1 is a schematic diagram showing a ship 100 equipped with a marine organism adhesion preventing apparatus according to the first embodiment. FIG. 2 is a partially enlarged view of the ship 100. In addition, about the same site | part as the ship 300 shown in FIG. 5, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  A ballast water treatment device 40 for sterilizing the collected ballast water is disposed on the ballast water pipe 1 (solid line) of the ship 100. The ballast water treatment apparatus 40 sterilizes by chemical (chemical, ultraviolet, electrolyzed water, etc.) or physical treatment, and is not particularly limited, but is not limited to the international marine organization (IMO) international Processes that are mandated by the Convention. Ballast water taken from the water intakes 60 and 60 is sterilized by the ballast water treatment device 40 and then stored in the ballast tanks 10, 20 and 30. Further, the ballast water stored in the ballast tanks 10, 20, 30 is sterilized again by the ballast water treatment device 40 when discharged. Note that the sterilization treatment by the ballast water treatment device 40 may be performed both at the time of water intake and at the time of drainage as described above, or may be performed at one of the time of water intake and at the time of drainage.

  Moreover, as shown by the one-dot chain line in the figure, the ship 100 is provided with a sterilized ballast water ejection pipe 3 and connected to the ballast water pipe 1 (solid line). . At the end portions of the plurality of branched ballast water ejection conduits 3, ejection holes 12 through which sterilized ballast water is ejected are provided. The ballast water jetting line 3 is also connected to the engine cooling water pipe 2 (broken line).

  The number or position of the ejection holes 12 is not particularly limited. However, in order to prevent adhesion of marine organisms over a wide range, it is preferable to provide the entire hull so that the ballast water to be ejected spreads as much as possible to the hull and propeller of the ship 100. . Moreover, it is preferable to form the ejection hole 12 in the ship bottom 15 of the ship 100, as shown in the partial enlarged view of FIG. By doing so, the sterilized ballast water can be accurately flowed around the hull.

  Next, a method for using the marine organism adhesion preventing apparatus according to the first embodiment will be described. The ballast water taken from the water intake ports 60, 60 using the ballast water pump P1 as power is sent to the ballast water treatment device 40 via the ballast water conduit 1 and sterilized, and then a plurality of ballast waters. Stored in tanks 10, 20, 30. The ship 100 then sails toward the destination.

  When the ship 100 arrives at the destination port, the operation moves to discharge ballast water. The ballast water stored in the ballast tanks 10, 20, and 30 is sent to the ballast water treatment apparatus 40 via the ballast water pipe 1 (solid line) by the power of the ballast water pump P1, and is sterilized again. Is done. The sterilized ballast water is ejected from the plurality of ejection holes 12 via the ballast water ejection conduit 3 (one-dot chain line) by the power of the ballast water pump P1. Since the ejected ballast water has been sterilized, the sterilized ballast water flows around the hull, propeller, and the like of the ship 100, thereby preventing the attachment of marine organisms. Note that the sterilization treatment by the ballast water treatment device 40 may be performed both at the time of water intake and at the time of drainage as described above, or may be performed at one of the time of water intake and at the time of drainage.

  Further, the sterilized ballast water is sent to the engine cooling water pipe 2 (broken line) by the power of the engine cooling water pump P <b> 2 and discharged from the discharge port 52. Thereby, adhesion of marine organisms inside the engine cooling water conduit 2 can be prevented.

  Since the marine organism adhesion preventing apparatus and the marine organism adhesion preventing method according to the first embodiment are configured as described above, the following effects are obtained.

  By causing the ballast water sterilized by the ballast water treatment apparatus to be ejected from the ejection hole 12 by the pump P1, adhesion of marine organisms to the ship 100 can be efficiently prevented. In other words, ballast water discharged from the ship 100 is obliged to be chemically treated (chemicals, ultraviolet rays, electrolyzed water, etc.) or physical treatment by international conventions of IMO (International Maritime Organization). By using the ballast water sterilized in this way, it is efficient because there is no need to separately prepare a jetting fluid to which a medicine or the like is added.

  Further, by forming the ballast water ejection holes 12 in the ship bottom 15, the sterilized ballast water can be accurately flowed around the hull. In particular, in the case of a new ship, the ejection holes 12 can be formed in advance at the construction stage, so that the structure is suitable for a new ship.

  Further, by allowing the sterilized ballast water to pass through the engine cooling water pipe 2 which is the path of the engine cooling water, it is possible to prevent the attachment of marine organisms in the path of the engine cooling water. Therefore, the outside of the hull, such as the hull surface and the propeller, and the engine cooling water path inside the hull can be collectively handled by a single device.

  Further, the ballast water pump P1 ejects the sterilized ballast water, which is efficient because it is not necessary to provide new power for ejecting the ballast water. Further, the power for passing the sterilized ballast water through the engine cooling water pipe 2 is also the existing engine cooling water pump P2, so that it is not necessary to provide new power and is efficient.

  Next, with reference to FIG.3 and FIG.4, the marine organism adhesion prevention apparatus and marine organism adhesion prevention method which concern on Embodiment 2 of this invention are demonstrated. FIG. 3 is a schematic diagram showing a ship 200 equipped with the marine organism adhesion preventing apparatus according to the second embodiment. FIG. 4 is a partially enlarged view of the ship 200. In addition, about the same site | part as the ship 100 shown in FIG. 1, and the ship 300 shown in FIG. 5, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The ship 200 according to the second embodiment has a configuration substantially similar to that of the ship 100 according to the first embodiment, but the configuration of the ejection holes is different. The ejection pipe 3 (one-dot chain line) of the ship 200 is connected to the outboard pipe 14. As shown in the partially enlarged views of FIGS. 3 and 4, the outboard pipe 14 is provided on the ship side of the ship 200, and a plurality of ejection holes 13 are formed in the outboard pipe 14 along the longitudinal direction. Has been. The ballast water sterilized by the ballast water treatment device 40 is discharged from the plurality of ejection holes 13 via the ballast water ejection pipeline 3 (one-dot chain line) via the outboard pipe 14 by the power of the ballast water pump P1. Erupted.

  According to the marine organism adhesion preventing apparatus according to the second embodiment, the ballast water ejection holes 13 are formed in the outboard pipe 14 provided around the ship 200, so that the sterilized ballast water can be accurately disposed around the hull. It can flow, and there can exist the same effect as the marine organism adhesion prevention device concerning Embodiment 1. In particular, in the case of an existing ship, it is difficult to form a jet hole later in the hull, so the structure is suitable for an existing ship.

  As described above, according to the marine organism adhesion preventing device and the marine organism adhesion preventing method according to the above-described embodiment, the marine organism adhesion preventing device and the marine organism that can prevent marine organism adhesion to the ship at low cost and efficiently. An adhesion prevention method can be provided.

  In the above embodiment, the sterilized ballast water is ejected from the ejection ports 12 and 13 using the power of the ballast water pump P1, but is ejected by the power of the engine cooling water pump P2. Alternatively, both powers of the pumps P1 and P2 may be used. Further, as the pump, it is possible to use the power of various pumps such as a ballast pump, a main cooling seawater pump, an auxiliary cooling seawater pump, a provision refrigerator pump, and a sanitary pump. And it is possible to adjust the drainage speed, electric power, etc. of ballast water by selecting the pump to be used suitably.

  Moreover, it is also possible to have a structure in which the ballast water is ejected by its own weight fall without depending on the power of the pump.

  Further, it is possible to obtain a further adhesion preventing effect by adding gas or chemicals to the sterilized ballast water or increasing the temperature of the ballast water to be ejected.

  As described above, the marine organism adhesion preventing apparatus and the marine organism adhesion preventing method according to the embodiment of the present invention have been described. However, the above embodiment is merely an example, and for example, the position and number of ballast tanks, the piping system, etc. Modifications can be made as appropriate without departing from the scope of the invention.

1 Ballast water pipeline (solid line)
2 Engine cooling water pipeline (broken line)
3 Ballast water jet pipe (dashed line)
DESCRIPTION OF SYMBOLS 10 Ballast tank 11 Inlet / outlet 12 Outlet 13 Outlet 14 Outboard pipe 15 Ship bottom 20 Ballast tank 21 Inlet / outlet 30 Ballast tank 31 Inlet / outlet 40 Ballast water treatment device 42 Outlet 50 Engine cooling object device 52 Outlet 60 Intake 100 Ship 200 Ship 300 Ship P1 Ballast water pump P2 Engine cooling water pump

Claims (6)

A ballast water treatment device for sterilizing the taken-in ballast water, a ballast water ejection hole for the sterilized treatment, and a pump for ejecting the sterilized ballast water from the ejection hole,
A marine organism adhesion preventing apparatus characterized in that adhesion of marine organisms to a ship is prevented by the ejected ballast water.   The marine organism adhesion prevention apparatus according to claim 1, wherein the ejection hole is formed in a ship bottom.   The marine organism adhesion prevention device according to claim 1, wherein the ejection hole is formed in an outboard pipe provided around the ship.   The marine organism adhesion prevention apparatus according to claim 1, wherein the sterilized ballast water is passed through a path of engine cooling water.   The marine organism adhesion prevention device according to any one of claims 1 to 4, wherein the pump is at least one of a ballast water pump and an engine cooling water pump.   A marine organism adhesion prevention method characterized by ejecting ballast water sterilized by a ballast water treatment apparatus to prevent adhesion of marine organisms to a ship.

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