Vessel

Abstract

To be capable of transporting a large amount of domestic water economically.SOLUTION: A vessel 1 including a ballast tank 20 includes: a water storage unit 30 provided in the ballast tank 20 partitioning a portion storing the domestic water in the ballast tank 20; and a water supply and drainage part 31 communicated with the water storage unit 30 for supply and drainage of the domestic water.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to water carrying vessels. [Background technology]

[0002] Generally, when cargo ships carrying various cargoes sail to their destinations while loaded with cargo, they inject seawater into and discharge seawater from ballast tanks to ensure smooth sailing and prevent damage to the cargo caused by rolling and pitching.

[0003] In addition, after a cargo ship unloads its cargo at its destination, it will return home almost empty, and during this return voyage, seawater is pumped into the ballast tanks to improve the ship's balance and maneuverability. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-100216 A Summary of the Invention [Problem to be solved by the invention]

[0005] By the way, looking around the world, there are countries and regions where it is difficult to secure water for daily life, and countries and regions where there is almost no water that can be used for daily life. In such countries and regions, the lack of sufficient water for daily life can lead to serious problems in terms of hygiene and health, and the supply of large amounts of water for daily life becomes an issue.

[0006] However, even if we try to supply large amounts of water for domestic use in the countries and regions mentioned above, it is difficult because there are no facilities to generate and supply water for domestic use in the first place. Furthermore, even if we try to transport water for domestic use, it will be quite costly to secure and navigate a ship just for that purpose.

[0007] The present disclosure has been made in consideration of the above points, and has as its object to make it possible to economically transport large amounts of water for domestic use. [Means for solving the problem]

[0008] In order to achieve the above object, one aspect of the present disclosure can be a ship equipped with a ballast tank. The ship can be configured to include a water storage section provided in the ballast tank to partition a portion of the ballast tank in which domestic water is stored, and a water supply and drainage section communicating with the water storage section to supply and drain the domestic water.

[0009] For example, a ballast tank is provided at the bottom or side of a cargo ship, and the volume of the ballast tank is quite large, depending on the displacement of the ship. Seawater is generally injected into the ballast tank during, for example, the return voyage, but in this embodiment, a water storage section is provided in the ballast tank as a section in which domestic water is stored. When domestic water is supplied to the water storage section through the water supply and drainage section, a large amount of domestic water is stored in the ballast tank. This enables the marine transportation of a large amount of domestic water. In other words, a ship that conventionally transported seawater during the return voyage transports domestic water instead of seawater in this embodiment, so that a large amount of domestic water can be transported economically without preparing a ship dedicated to transporting domestic water. In addition, even when not on the return voyage, by supplying domestic water instead of seawater to the water storage section when water needs to be poured into the ballast tank, a large amount of domestic water can be transported economically.

[0010] The water storage section may be, for example, bag-shaped. By having the water storage section in a bag shape, when seawater is to be injected into the ballast tank, the water storage section can be easily made small inside the ballast tank, and a sufficient amount of seawater can be ensured.

[0011] The upper wall of the ballast tank may be provided with a removal section for removing the water storage section. With this configuration, the water storage section can be removed from the removal section when replacing, cleaning, disinfecting, or sterilizing the water storage section. Since the water storage section is bag-shaped, it can be easily removed by folding or folding the water storage section to make it compact. Also, a new water storage section or a water storage section after cleaning, disinfecting, or sterilization can be stored in the ballast tank from the removal section.

[0012] A fastener for fastening the water storage unit may be provided within the ballast tank. With this configuration, the water storage unit can be disposed at a predetermined position within the ballast tank.

[0013] The water supply and drainage section may be installed on the outer wall surface of the hull. This allows domestic water to be injected into the water storage section from outside the hull, and domestic water stored in the water storage section can be discharged from outside the hull. Supply and discharge of domestic water can be performed simultaneously with loading and unloading operations.

[0014] The ballast tank may include a bottom ballast tank provided at the bottom of the hull and a side ballast tank provided on each side of the hull. In this case, the water storage unit may be provided in each of the bottom ballast tank and the side ballast tank. The water supply and drainage unit may include a bottom water supply and drainage unit communicating with the water storage unit provided in the bottom ballast tank and a side water supply and drainage unit communicating with the water storage unit provided in the side ballast tank, and the bottom water supply and drainage unit may be installed on an upper wall of the bottom ballast tank located between the side ballast tanks provided on each side of the hull. Effect of the Invention

[0015] As described above, water for daily use can be stored and transported in the water storage section provided in the ballast tank, so that large amounts of water for daily use can be transported economically. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a side view of a vessel according to a first embodiment of the present invention. [Diagram 2] This is a cross-sectional view taken along line II-II in Figure 1, showing the state before water for daily use is stored. [Diagram 3] 2 is a cross-sectional view taken along line II-II in FIG. 1, showing the state after storing water for daily use. [Figure 4] FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1, showing the water storage section being removed from the ballast tank. [Diagram 5] FIG. 4 is a view corresponding to FIG. 2 according to a second embodiment of the present invention. [Figure 6] FIG. 11 is a view corresponding to FIG. 2 according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. Note that the following description of the preferred embodiments is merely illustrative in nature and is not intended to limit the present invention, its applications, or its uses.

[0018] (Embodiment 1) Fig. 1 is a side view of a ship 1 according to a first embodiment of the present invention. The ship 1 is, for example, a cargo ship that carries various cargoes, and the type, shape, condition, size, and amount of the cargoes are not particularly limited. For example, when carrying liquids, the ship 1 is a tanker. A screw 1a and a rudder 1b are provided at the rear of the ship 1.

[0019] The vessel 1 has a hull 10, a power plant (not shown) mounted on the hull 10, a steering mechanism (not shown) mounted on the hull 10, and the like. As shown in FIG. 2, the hull 10 has a right side wall 11, a left side wall 12, and a bottom wall 13 made of steel plates or the like. The bottom wall 13 is a part that constitutes the bottom of the vessel 1. The right side wall 11 is a side wall located on the right when viewed toward the front of the vessel 1. The left side wall 12 is a side wall located on the left when viewed toward the front of the vessel 1.

[0020] A bottom ballast tank 20 is provided at the bottom of the hull 10. The bottom ballast tank 20 is provided over a wide area from the front to the rear of the hull 10 and from the right to the left of the hull 10. A partition wall 21 extending in the left-right direction is provided inside the bottom ballast tank 20. Although not shown, a partition wall extending in the front-rear direction may also be provided inside the bottom ballast tank 20. The space above the bottom ballast tank 20 in the hull 10 is a space in which cargo is loaded (a space in which the liquid is accommodated if the cargo is liquid).

[0021] As shown in Fig. 2, the upper wall portion 22 of the bottom ballast tank 20 extends in the left-right and front-rear directions. The right end of the upper wall portion 22 is joined to the inner surface of the right side wall 11 of the hull 10, and the left end of the upper wall portion 22 is joined to the inner surface of the left side wall 12 of the hull 10. This ensures the watertightness of the bottom ballast tank 20. Note that the structure shown in Fig. 2 is an example, and the structure may be symmetrical or reversed.

[0022] Seawater is injected into the bottom ballast tank 20 by a pump or the like (not shown), and the seawater in the bottom ballast tank 20 is discharged by the pump or the like. The amount of seawater injected and discharged, and the timing thereof, are set arbitrarily by the crew, and the pump or the like operates according to the setting. This allows smooth navigation, and when the ship 1 navigates to the destination with cargo loaded, damage to the cargo due to rolling and pitching can be suppressed. After the ship 1 unloads its cargo at the destination, it will return to the destination almost empty, and during this return voyage, seawater can be injected into the bottom ballast tank 20 to improve the balance and maneuverability of the ship 1.

[0023] A water storage section 30 is provided in the bottom ballast tank 20 to partition a portion R in which domestic water is stored in the bottom ballast tank 20. The water storage section 30 is bag-shaped, and specifically, is made of a bag-shaped member made of a water-impermeable and flexible material. Examples of such materials include rubber and resin materials, but are not limited to these, and the water storage section 30 may be made of any material.

[0024] Since the water storage section 30 stores water for daily use, the inside of the water storage section 30 can be disinfected, sterilized, etc. Also, the water storage section 30 is designed to prevent seawater, etc. outside the water storage section 30 from penetrating into the inside of the water storage section 30.

[0025] The water storage section 30 may be made of a laminated member in which a plurality of types of materials are laminated. Fig. 2 shows a state in which the water storage section 30 does not store water for daily use, and in this state the water storage section 30 is small. Fig. 3 shows a state in which the water storage section 30 stores water for daily use, and in this state the water storage section 30 is greatly expanded. Since the volume of the bottom ballast tank 20 is large, the volume of the water storage section 30 can also be made large, and a large amount of water for daily use can be stored in the water storage section 30.

[0026] Incidentally, water for daily use refers to water that humans use in their daily lives, and includes, for example, water that can be used for laundry, bathing, hand washing, cooking, etc. Water for daily use may include water suitable for drinking (potable water).

[0027] The hull 10 is provided with a water supply and drainage section 31 that communicates with the water storage section 30 and supplies and drains domestic water. The water supply and drainage section 31 is, for example, made of a cylindrical, tubular or pipe-shaped member, and is installed on the outer wall surface of the hull 10. That is, one end of the water supply and drainage section 31 is inserted and fixed in an installation hole 12a formed in the left side wall 12 of the hull 10. A lid member 31a is detachably attached to one end of the water supply and drainage section 31. This lid member 31a faces the outside of the hull 10 and can be opened and closed from the outside. This makes it possible to supply and discharge domestic water even during cargo loading and unloading work, so that loading and unloading work and domestic water supply work can be performed in parallel, or loading and unloading work and domestic water discharge work can be performed in parallel.

[0028] Meanwhile, the other end of the water supply and drainage section 31 is inserted into a through hole 22a formed in the left portion of the upper wall section 22 of the bottom ballast tank 20 and fixed to the upper wall section 22. The water storage section 30 is connected to the other end of the water supply and drainage section 31, and the inside of the water storage section 30 and the inside of the water supply and drainage section 31 are connected to each other.

[0029] In this embodiment, one water supply and drainage section 31 is used to supply and drain water for daily use, but this is not limiting and the water supply section and drainage section may be provided separately, and the water supply and drainage section may be used to constitute the water supply and drainage section. In this case, by connecting the water supply section to the water storage section 30 and also connecting the drainage section to the water storage section 30, the water supply section and the drainage section can be communicated with the water storage section 30.

[0030] The upper wall 22 of the bottom ballast tank 20 is provided with an extraction hole 22b formed to penetrate the upper wall 22. The extraction hole 22b is an extraction portion for extracting the water storage portion 30. A blocking member 22c for blocking the extraction hole 22b is detachably attached to the upper wall 22. Normally, the blocking member 22c is attached to the upper wall 22, and the extraction hole 22b is blocked by the blocking member 22c. On the other hand, when the water storage portion 30 is to be removed from the bottom ballast tank 20 for replacement, cleaning, disinfection, sterilization, repair, etc., the blocking member 22c is removed from the upper wall 22 as shown in FIG. 4. This opens the extraction hole 22b, so that the water storage portion 30 in the bottom ballast tank 20 can be pulled in the direction of the arrow A and removed from the extraction hole 22b. When removing the water storage unit 30, since the water storage unit 30 is made of a bag-shaped member, it can be folded or folded to make it compact, making it easy to remove. Note that the water storage unit 30 is not limited to being bag-shaped, and may be, for example, a box-shaped or tank-shaped.

[0031] A fixing device 40 for fixing the water storage section 30 is provided in the bottom ballast tank 20. The fixing device 40 is, for example, made of an elastic string or rope. One end of the fixing device 40 is connected to the water storage section 30, and the other end of the fixing device 40 is connected to the inside of the bottom ballast tank 20. As shown in FIG. 2, when no water for daily use is stored, the water storage section 30 is in a state of being lifted up by the fixing device 40 so as not to come into contact with the bottom wall 13. In addition, the position of the water storage section 30 is determined by the fixing device 40 so as not to come into contact with the right side wall 11 and the left side wall 12.

[0032] In the case of this embodiment 1, for example, during return voyage, domestic water can be stored in the water storage section 30 in the bottom ballast tank 20. First, the cover member 31a is opened from outside the hull 10 to open one end of the water supply and drainage section 31, and then a supply device (not shown) for supplying domestic water is connected to one end of the water supply and drainage section 31. This supply device includes a pump or the like configured to be able to supply clean water such as tap water at a predetermined pressure. The domestic water supplied by the supply device flows into the water supply and drainage section 31 from one end of the water supply and drainage section 31. The water that flows into the water supply and drainage section 31 flows into the water storage section 30 from the other end of the water supply and drainage section 31. When a predetermined amount of domestic water is stored in the water storage section 30, the supply device is stopped, and the cover member 31a is attached to one end of the water supply and drainage section 31 to close it.

[0033] Seawater may be injected into the bottom ballast tank 20 outside the water storage section 30. Since seawater has a higher specific gravity than domestic water, the water storage section 30 floats on the seawater in the bottom ballast tank 20. Seawater may be injected into the bottom ballast tank 20 before domestic water is supplied to the water storage section 30. For example, after seawater is injected into the bottom ballast tank 20, domestic water is supplied to the water storage section 30, and the supply of domestic water or injection of seawater is stopped when the combined amount of seawater and domestic water reaches a desired amount.

[0034] Furthermore, seawater may be injected into the bottom ballast tank 20 after domestic water is supplied to the water storage section 30. For example, after domestic water is supplied to the water storage section 30, seawater is injected into the bottom ballast tank 20, and the supply of domestic water or injection of seawater is stopped when the combined amount of domestic water and seawater reaches a desired amount.

[0035] For example, if the ship 1 is a tanker, it loads crude oil in an oil-producing country and then unloads the crude oil in, for example, Japan. After that, the tanker becomes empty, so by storing domestic water in the water storage section 30 of the bottom ballast tank 20, the balance and maneuverability of the ship 1 are improved during the return voyage. By calling at a country with scarce domestic water during the return voyage and unloading the domestic water in the water storage section 30, a large amount of domestic water can be supplied to the country with scarce domestic water. Seawater can be injected into the bottom ballast tank 20 to make up for the decrease in domestic water. It is also possible to unload the domestic water in the water storage section 30 after returning without calling at a port during the return voyage.

[0036] As described above, according to the ship 1 of this embodiment, since the water storage section 30 is provided in the bottom ballast tank 20, it becomes possible to transport a large amount of domestic water by sea. This makes it possible to transport a large amount of domestic water economically without preparing a ship dedicated to transporting domestic water. Furthermore, even when not on the return voyage, by supplying domestic water instead of seawater when it is necessary to inject water into the bottom ballast tank 20, it is possible to transport a large amount of domestic water economically.

[0037] In the first embodiment, the water supply and drainage unit 31 is installed on the left side wall 12 of the hull 10, but this is not limiting, and the water supply and drainage unit 31 may be installed on the right side wall 11 of the hull 10. The water supply and drainage unit 31 may also be installed on the upper wall portion 22 of the bottom ballast tank 20. In this case, one end of the water supply and drainage unit 31 is inserted and fixed in an installation hole (not shown) formed in the upper wall portion 22.

[0038] (Embodiment 2) 5 shows a ship 1 according to a second embodiment of the present invention. In the second embodiment, the ballast tanks include a bottom ballast tank 20 provided at the bottom of the hull 10, and a right ballast tank 50 and a left ballast tank 60 provided on both sides of the hull 10. The right ballast tank 50 and the left ballast tank 60 are shaped such that the vertical dimension is longer than the horizontal dimension. The right ballast tank 50 and the left ballast tank 60 are provided with a gap in the horizontal direction, and the space between the right ballast tank 50 and the left ballast tank 60 is a space in which cargo is loaded.

[0039] A right side water storage section 33 configured similarly to the water storage section 30 is provided in the right side ballast tank 50. A left side water storage section 34 configured similarly to the water storage section 30 is provided in the left side ballast tank 60. The water supply and drainage section includes a bottom water supply and drainage section 31 communicating with the water storage section 30 provided in the bottom ballast tank 20, a right side water supply and drainage section 35 communicating with the right side water storage section 33 provided in the right side ballast tank 50, and a left side water supply and drainage section 36 communicating with the left side water storage section 34 provided in the left side ballast tank 60.

[0040] The bottom water supply and drainage section 31 is installed on the upper wall 22 of the bottom ballast tank 20 located between the side ballast tanks 50, 60 provided on both sides of the hull 10. Specifically, the bottom water supply and drainage section 31 is arranged to extend in the vertical direction, and one end (upper end) of the bottom water supply and drainage section 31 is inserted and fixed in an installation hole 22d formed in the upper wall 22. A lid member 31a is detachably attached to the upper end of the bottom water supply and drainage section 31.

[0041] The right side water supply and drainage section 35 is disposed so as to extend in the vertical direction, and one end (upper end) of the right side water supply and drainage section 35 is inserted and fixed in an installation hole 51a formed in the upper wall section 51 of the right side ballast tank 50. A lid member 35a is detachably attached to the upper end of the right side water supply and drainage section 35.

[0042] The left side water supply and drainage section 36 is disposed so as to extend in the left-right direction, and one end (left end) of the left side water supply and drainage section 36 is inserted and fixed in an installation hole 12a formed in the left side wall 12 of the hull 10. A lid member 36a is detachably attached to the left end of the left side water supply and drainage section 36.

[0043] According to embodiment 2, it is possible to achieve the same effect as embodiment 1, and by providing a right side water storage section 33 and a left side water storage section 34 in the right side ballast tank 50 and the left side ballast tank 60, respectively, it is possible to store water for domestic use, thereby increasing the amount of water transported for domestic use.

[0044] (Embodiment 3) 6 shows a ship 1 according to a third embodiment of the present invention. In this third embodiment, the bottom ballast tank 20 is divided into a right side and a left side. That is, a partition wall 25 is provided in the center in the left-right direction inside the bottom ballast tank 20. The partition wall 25 extends in the vertical direction and also in the front-rear direction, and the partition wall 25 divides the inside of the bottom ballast tank 20 into a left space and a right space.

[0045] The water storage unit 30 is provided in each of the right and left spaces in the bottom ballast tank 20. An extraction hole 22b is provided in the right part of the upper wall 22 of the bottom ballast tank 20 from the partition wall 25, and a blocking member 22c is detachably attached to the extraction hole 22b. An extraction hole 22e is provided in the left part of the upper wall 22 of the bottom ballast tank 20 from the partition wall 25, and a blocking member 22f that blocks the extraction hole 22e is detachably attached to the bottom ballast tank 20. Although not shown, water supply and drainage units similar to those in the first embodiment are provided on the right and left sides. The water supply and drainage unit on the right side can supply water to and drain water from the water storage unit 30 provided in the right space in the bottom ballast tank 20. The water supply and drainage unit on the left side can supply water to and drain water from the water storage unit 30 provided in the left space in the bottom ballast tank 20. In addition, since seawater can be introduced into and discharged from the left and right sides of the bottom ballast tanks 20 separately, like conventional ballast tanks, this has the effect of suppressing rolling and pitching of the ship 1.

[0046] The above-described embodiment is merely illustrative in all respects and should not be construed as limiting. Furthermore, all modifications and changes within the scope of equivalence of the claims are within the scope of the present invention. For example, the shape and position of the ballast tank are not limited to those described above. Furthermore, the volume of the water storage section 30 can be set arbitrarily. Furthermore, a single ballast tank can be provided with multiple water storage sections 30. [Industrial Applicability]

[0047] INDUSTRIAL APPLICABILITY As described above, the ship according to the present invention can be used, for example, for transporting water for domestic use. [Explanation of symbols]

[0048] 1 ship 20 Bottom Ballast Tank 22 Upper wall 30 Water storage section 31 Water supply and drainage section 33 Right side water storage 34 Left water container 35 Right side water supply and drainage section 36 Left side water supply and drainage section 50 Right side ballast tank 60 Left side ballast tank

Claims

1. A ship equipped with ballast tanks, A water storage section is provided in the ballast tank and defines a portion of the ballast tank in which domestic water is stored; A ship comprising a water supply and drainage section connected to the water storage section for supplying and draining water for domestic use.

2. 2. The vessel according to claim 1, The water storage portion of the ship is bag-shaped.

3. 3. The vessel according to claim 2, The ship, wherein an upper wall portion of the ballast tank is provided with an extraction portion for removing the water storage portion.

4. 3. The vessel according to claim 2, A ship, wherein a fastener for fixing the water storage portion is provided in the ballast tank.

5. 2. The vessel according to claim 1, The water supply and drainage section is installed on an outer wall surface of a hull of a ship.

6. 2. The vessel according to claim 1, The ballast tank includes a bottom ballast tank provided at the bottom of the hull and side ballast tanks provided on both sides of the hull, The water storage units are provided in the bottom ballast tank and the side ballast tank, the water supply and drainage section includes a bottom water supply and drainage section communicating with the water storage section provided in the bottom ballast tank, and a side water supply and drainage section communicating with the water storage section provided in the side ballast tank, A ship, wherein the bottom water supply and drainage section is installed on the upper wall of the bottom ballast tank located between the side ballast tanks provided on both sides of the hull.

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