WO2010058611A1 - 船体摩擦抵抗低減装置 - Google Patents
船体摩擦抵抗低減装置 Download PDFInfo
- Publication number
- WO2010058611A1 WO2010058611A1 PCT/JP2009/052278 JP2009052278W WO2010058611A1 WO 2010058611 A1 WO2010058611 A1 WO 2010058611A1 JP 2009052278 W JP2009052278 W JP 2009052278W WO 2010058611 A1 WO2010058611 A1 WO 2010058611A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- air supply
- marine organism
- supply path
- organism adhesion
- Prior art date
Links
- 239000007788 liquid Substances 0.000 claims abstract description 130
- 230000002265 prevention Effects 0.000 claims abstract description 107
- 230000010071 organism adhesion Effects 0.000 claims description 129
- 238000007664 blowing Methods 0.000 claims description 69
- 230000003449 preventive effect Effects 0.000 abstract 1
- 239000013535 sea water Substances 0.000 description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000005708 Sodium hypochlorite Substances 0.000 description 6
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 6
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000007227 biological adhesion Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
- B63B59/04—Preventing hull fouling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Definitions
- the present invention relates to a hull frictional resistance reducing device that reduces the frictional resistance of water acting on the outer surface of the hull by blowing out air from the bottom of the hull during navigation and covering the outer surface of the hull with a bubble layer.
- an opening is formed in the bottom of the ship, a gas chamber is disposed in the opening, a number of air outlets are formed in the gas chamber, and an air supply pipe from the compressor is provided. It is connected to the gas chamber. Therefore, when air is supplied to the gas chamber through the air supply pipe by the compressor, air is blown out from many air outlets, and the outer surface of the hull is covered with a bubble layer, thereby reducing the frictional resistance of water acting on the outer surface of the hull. Can be made.
- seawater may enter the gas chamber through a large number of air outlets, and marine organisms such as shellfish and algae may adhere to the air outlets and block them.
- Patent Document 1 As a device for preventing marine organisms from adhering to the air outlet of the hull with the hull frictional resistance reduction device, for example, there is one described in Patent Document 1 below.
- a state in which marine organisms are avoided is created by blowing chlorine gas into the air blower, and adhesion and accumulation of marine organisms are suppressed. Blocking of the air blowing part is prevented.
- a mixer for mixing chlorine gas into the pressurized air is provided at an intermediate position of the air supply pipe, and seawater is electrolyzed in this mixer.
- a chlorine gas generator for generating chlorine gas is connected. That is, after chlorine gas is mixed into the pressurized air, this mixed gas is blown out into the water from the air blowing port. Therefore, even when the ship is anchored, there is a problem that it is necessary to always drive the air feeding device, that is, the compressor, and the power consumption increases.
- This invention solves the subject mentioned above, and it aims at providing the hull frictional resistance reduction apparatus which can suppress the power consumption concerning it while preventing adhesion of the marine organism to the air outlet of a hull. .
- a hull frictional resistance reducing device comprises an air outlet provided on the bottom of the hull, an air supply means for supplying air to the air outlet, and a marine organism at the air outlet.
- Marine organism adhesion prevention liquid supply means for supplying adhesion prevention liquid; and switching means for selectively communicating either the air supply means or the marine organism adhesion prevention liquid supply means with respect to the air outlet. It is characterized by comprising.
- the air supply means includes an air supply source and an air supply path that connects the air supply source and the air outlet, and the marine organism adhesion preventing liquid.
- the supply means includes a marine organism adhesion prevention liquid supply source, and a marine organism adhesion prevention liquid supply path connecting the marine organism adhesion prevention liquid supply source and the air supply path, and the switching means includes the air supply.
- a first on-off valve provided on the air supply source side from a connecting portion with the marine organism adhesion prevention liquid supply path in the path, and a second on-off valve provided on the marine organism adhesion prevention liquid supply path. It is characterized by that.
- a plurality of blowout chambers are provided along the width direction at the bottom of the hull, the blowout chambers are provided with a plurality of the air blowout ports, and the air supply path is A main air supply path extending from an air supply source; and a plurality of sub air supply paths branched from the main air supply path and connected to the plurality of blow-out chambers; The path is connected to the main marine organism adhesion prevention liquid supply path extended from the marine organism adhesion prevention liquid supply source, and the main marine organism adhesion prevention liquid supply path is branched to the plurality of sub air supply paths. And a plurality of sub-main marine organism adhesion preventing liquid supply paths.
- a plurality of blowout chambers are provided along the width direction at the bottom of the hull, the blowout chambers are provided with a plurality of the air blowout ports, and the air supply path is A main air supply path extending from an air supply source; and a plurality of sub air supply paths branched from the main air supply path and connected to the plurality of blow-out chambers; The path is connected to the main air supply path.
- the switching means communicates the marine organism adhesion prevention liquid supply means to the air outlet when the navigation speed of the ship is preset and is equal to or lower than a predetermined low speed. It is characterized by that.
- an air outlet provided on the bottom of the hull, an air supply means for supplying air to the air outlet, and an ocean for supplying marine organism adhesion prevention liquid to the air outlet.
- Biological adhesion prevention liquid supply means, and switching means for selectively communicating either the air supply means or the marine organism adhesion prevention liquid supply means with respect to the air outlet are provided. Therefore, when the air supply means is communicated with the air outlet by the switching means, the friction resistance of water acting on the outer surface of the hull can be reduced by blowing air from the air outlet to the bottom surface of the hull.
- the marine organism adhesion prevention liquid supply means When the marine organism adhesion prevention liquid supply means is communicated with the air outlet by the switching means, the marine organism adhesion prevention liquid is blown out from the air outlet, thereby preventing the attachment of marine organisms to the air outlet of the hull. In this case, since the air supply means can be stopped, power consumption can be suppressed.
- an air supply means an air supply source and an air supply path for connecting the air supply source and the air outlet are provided, and the marine organism adhesion prevention liquid supply means is provided.
- a plurality of blowing chambers are provided along the width direction at the bottom of the hull, a plurality of air blowing ports are provided in the blowing chamber, and the air supply path is extended from the air supply source.
- a plurality of blowing chambers are provided along the width direction at the bottom of the hull, a plurality of air blowing ports are provided in the blowing chamber, and the air supply path is extended from the air supply source.
- a main air supply path that is discharged and a plurality of sub air supply paths that are branched from the main air supply path and are connected to a plurality of blowing chambers are provided, and the marine organism adhesion prevention liquid supply path is connected to the main air supply path. Therefore, by connecting the marine organism adhesion prevention liquid supply source to the main air supply path via the marine organism adhesion prevention liquid supply path, it is possible to simplify the piping configuration and reduce the size and cost of the equipment. it can.
- the switching means communicates the marine organism adhesion preventing liquid supply means to the air outlet when the navigation speed of the ship is set in advance and is equal to or lower than a predetermined low speed. Therefore, by supplying a marine organism anti-adhesion liquid to the air outlet at a predetermined low speed or less, which can not sufficiently reduce the frictional resistance of water by forming a bubble layer on the outer surface of the hull, it acts on the outer surface of the hull. It is possible to achieve both the reduction of the frictional resistance of the water to be used and the prevention of the attachment of marine organisms to the air outlet, and the optimum power consumption can be suppressed.
- FIG. 1 is a schematic configuration diagram illustrating a hull frictional resistance reduction device according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic configuration diagram illustrating a hull frictional resistance reduction device according to Embodiment 2 of the present invention.
- FIG. 1 is a schematic configuration diagram showing a hull frictional resistance reduction device according to Embodiment 1 of the present invention.
- a plurality (five in this embodiment) of blowing chambers 13 a, 13 b, 13 c, 13 d, 13e are arranged in series along the width direction of the hull 11.
- a plurality of air outlets 14a, 14b, 14c, 14d, and 14e are provided on the lower surface of each of the outlet chambers 13a, 13b, 13c, 13d, and 13e, and the longitudinal lengths of the outlet chambers 13a, 13b, 13c, 13d, and 13e. It is formed along the direction, that is, the width direction of the hull 11.
- a slit-shaped opening is formed in the ship bottom portion 12 along the width direction of the hull 11, and the blowing chambers 13 a, 13 b, 13 c, 13 d, and 13 e are formed so as to close the opening from the inside of the hull 11.
- a plurality of air outlets 14 a, 14 b, 14 c, 14 d, 14 e are fixed by welding or the like and exposed to the lower surface of the outlet chambers 13 a, 13 b, 13 c, 13 d, 13 e, that is, outside the hull 11. Is formed.
- the blowing chambers 13a, 13b, 13c, 13d, and 13e and the air blowing ports 14a, 14b, 14c, 14d, and 14e are preferably provided on the bow side of the hull 11, and are provided on the flat portion of the bottom 12 of the ship. It is desirable.
- the arrangement positions of the blowing chambers 13a, 13b, 13c, 13d, and 13e and the air blowing openings 14a, 14b, 14c, 14d, and 14e are preferably provided in the entire region in the width direction of the hull 11.
- the hull 11 may be divided before and after the hull 11 or arranged in a staggered manner.
- a blower 15 is installed inside the hull 11, and this blower 15 can be driven by a drive motor 16 to supply air.
- the supply amount can be adjusted.
- the control device (not shown) controls the drive motor 16 according to the navigation speed of the ship, and the air supply amount by the blower 15, that is, the air blowing flow rate from the air blowing ports 14a, 14b, 14c, 14d, and 14e described above. Adjust. Specifically, it is desirable to increase the amount of air supplied by the blower 15, that is, to increase the air blowing flow rate from the air blowing ports 14 a, 14 b, 14 c, 14 d, and 14 e as the navigation speed of the ship increases.
- the blower 15 is connected to an air intake pipe 17 that is opened to the atmosphere on the air intake side, while an air supply pipe 18 is connected to the air supply side.
- the air supply pipe 18 is connected to the main chamber 19 and is halfway.
- the opening / closing valve 20 is attached to the part.
- the main chamber 19 can store the air supplied from the blower 15 at a predetermined amount and a predetermined pressure.
- the main chamber 19 is connected to the base end portion of the main air supply path 21, and the main air supply path 21 has a plurality of (in this embodiment, five) sub air supply paths 22 a, 22 b, and 22 c. , 22d, 22e.
- the auxiliary air supply paths 22a, 22b, 22c, 22d, and 22e are connected to the upper portions of the blowout chambers 13a, 13b, 13c, 13d, and 13e, respectively.
- An opening / closing valve (first opening / closing valve) 23 is attached to the main air supply path 21.
- the sub air supply paths 22a, 22b, 22c, 22d, and 22e are located in the vicinity of a branching portion (connecting portion) to the main air supply path 21 and flow rate adjusting valves 24a, 24b, 24c, 24d, and 24e. Is mounted, and shut-off valves 25a, 25b, 25c, 25d, and 25e are mounted in the vicinity (immediately before) of the respective blowing chambers 13a, 13b, 13c, 13d, and 13e.
- the main air supply path 21 and the sub air supply paths 22a, 22b, 22c, 22d, and 22e constitute the air supply path of the present invention.
- the blower 15 and the drive motor 16 constitute an air supply source of the present invention.
- the blower 15, the air supply pipe 18, the main chamber 19, the main air supply path 21, and the sub air supply paths 22a, 22b, 22c, 22d, and 22e constitute the air supply means of the present invention.
- Various valves are included as necessary.
- a pump 26 is installed inside the hull 11, and this pump 26 can be driven by a drive motor 27 to supply seawater. By adjusting the rotation speed of the drive motor 27, The supply amount can be adjusted.
- a seawater intake pipe 28 communicating with seawater is connected to the seawater intake side, while a seawater supply pipe 29 is connected to the seawater supply side, and this seawater supply pipe 29 is connected to the marine organism adhesion prevention device 30.
- the on-off valve 31 is mounted in the middle.
- the marine organism adhesion prevention device 30 is an apparatus for electrolyzing seawater to produce sodium hypochlorite and mixing the produced sodium hypochlorite with seawater to produce marine organism adhesion prevention liquid.
- this marine organism adhesion prevention apparatus 30 is not limited to this structure, If the liquid which has disinfection, disinfection, and oxidizing power, such as chlorine, can be mixed with water and a marine organism adhesion prevention liquid can be produced
- a base end portion of the main marine organism adhesion prevention liquid supply path 32 is connected to the marine organism adhesion prevention apparatus 30, and there are a plurality of the main marine organism adhesion prevention liquid supply paths 32 (five in this embodiment). ) Of the secondary marine organism adhesion prevention liquid supply path 33a, 33b, 33c, 33d, 33e.
- Each of the submarine organism adhesion preventing liquid supply paths 33a, 33b, 33c, 33d, and 33e has a tip portion connected to each of the sub air supply paths 22a, 22b, 22c, 22d, and 22e.
- each secondary marine organism adhesion prevention liquid supply path 33a, 33b, 33c, 33d, 33e is the flow rate adjusting valve 24a, 24b, 24c in each secondary air supply path 22a, 22b, 22c, 22d, 22e. 24d and 24e are connected to the main air supply path 21 side.
- An open / close valve (second open / close valve) 34 is attached to the main marine organism adhesion preventing liquid supply path 32.
- flow control valves 35a, 35b, 35c, 35d, and 35e are attached to the submarine organism adhesion prevention liquid supply paths 33a, 33b, 33c, 33d, and 33e, respectively.
- the main marine organism adhesion prevention liquid supply path 32 the submarine organism adhesion prevention liquid supply path 33a, 33b, 33c, 33d, 33e and the sub air supply paths 22a, 22b, 22c, 22d, 22e are used.
- the marine organism adhesion prevention liquid supply path of the invention is configured.
- the pump 26 and the drive motor 27 constitute the marine organism adhesion prevention liquid supply source of the present invention.
- the marine organism adhesion preventing liquid supply means of the present invention is constituted by 22b, 22c, 22d and 22e. Various valves are included as necessary.
- the air supply means and the marine organism adhesion preventing liquid supply means described above with respect to the air outlets 14a, 14b, 14c, 14d, 14e Blowing chambers 13a, 13b, 13c, 13d, 13e).
- Switching means for selectively communicating either one is provided.
- the on-off valve (first on-off valve) 23 provided on the main air supply path 21 and the on-off valve (second on-off valve) 34 provided on the main marine organism adhesion prevention liquid supply path 32 are the present invention. It functions as a switching means.
- the crew of the ship causes the marine organism adhesion prevention liquid supply means to communicate with the air outlets 14a, 14b, 14c, 14d, and 14e when the navigation speed of the ship is set in advance and is equal to or lower than a predetermined low speed. . That is, when the ship is navigating at a low speed, it is difficult to sufficiently form a bubble layer on the outer surface of the hull 11 even if air is blown out from the air blowing ports 14a, 14b, 14c, 14d, and 14e.
- the air blowing outlet is blown out from the air blowing openings 14a, 14b, 14c, 14d, and 14e, thereby The adhesion of marine organisms to 14a, 14b, 14c, 14d, and 14e is prevented.
- the on-off valves 20 and 23 and the shut-off valves 25a, 25b, 25c, 25d, and 25e are opened to communicate with the main air supply path 21.
- the on-off valves 31 and 34 are closed to shut off the main marine organism adhesion preventing liquid supply path 32.
- the blower 15 is operated by the drive motor 16 in a state where only the on-off valve 20 is opened and closed and the on-off valve 23 is closed. It is desirable to store air of a fixed amount and a predetermined pressure. Further, when the air is blown out from the air outlets 14a, 14b, 14c, 14d, and 14e during the navigation of the ship, the operation of the blower 15 by the drive motor 16 is controlled to correspond to the navigation speed of the ship. Adjust the air flow rate.
- the on-off valves 20 and 23 are closed to shut off the main air supply path 21 and the drive motor 16 is stopped to blow the blower 15.
- the on-off valves 31 and 34 are opened to communicate with the main marine organism adhesion prevention liquid supply path 32.
- the pump 26 is operated by the drive motor 27 and seawater is supplied to the marine organism adhesion prevention device 30, the seawater is electrolyzed to produce sodium hypochlorite, and the produced sodium hypochlorite. Is mixed with seawater to produce a marine organism adhesion prevention liquid.
- the generated marine organism adhesion prevention liquid is supplied from the main marine organism adhesion prevention liquid supply path 32 through the submarine organism adhesion prevention liquid supply paths 33a, 33b, 33c, 33d, and 33e. 22b, 22c, 22d and 22e.
- the auxiliary marine organism adhesion preventing liquid is supplied to the blowing chambers 13a, 13b, 13c, 13d, and 13e through the auxiliary air supply paths 22a, 22b, 22c, 22d, and 22e, and the air blowing holes 14a, 14b, 14c, and 14d. , 14e is blown out toward the seawater side.
- the marine organism adhesion preventing liquid is blown out from the air blowing ports 14a, 14b, 14c, 14d, and 14e, thereby preventing the attachment of marine organisms to the air blowing ports 14a, 14b, 14c, 14d, and 14e.
- the marine organism adhesion preventing liquid is blown out toward the seawater from the air blowing ports 14a, 14b, 14c, 14d, and 14e, but the blowing speed may be low and the air blowing ports 14a, 14b, 14c, and 14d.
- the blowing speed of the marine organism adhesion preventing liquid from the air blowing ports 14a, 14b, 14c, 14d, and 14e is sufficiently lower than the blowing speed of the air. Therefore, although the pump 26 is driven by the drive motor 27, the power consumption of the drive motor 27 is significantly lower than the power consumption of the drive motor 16 for operating the blower 15, and the power consumption is suppressed. . Further, in this embodiment, the marine organism adhesion preventing liquid is blown out from the air blowing ports 14a, 14b, 14c, 14d, and 14e, and the marine organism adhesion preventing liquid can be blown out at a lower flow rate than the air is blown into the seawater. Also in this respect, power consumption is suppressed.
- the opening degree of the flow rate adjusting valves 35a, 35b, 35c, 35d, and 35e is adjusted to the larger side, thereby being constant. It is desirable to blow out a quantity of marine organism adhesion prevention liquid. Further, when the ship is anchored, marine organisms are more likely to adhere to the air outlets 14a, 14b, 14c, 14d, and 14e than when the vessel is navigating at a low speed. It is desirable to blow out the prevention liquid.
- the blowing chambers 13a, 13b, 13c, 13d, and 13e having the air blowing ports 14a, 14b, 14c, 14d, and 14e on the ship bottom portion 12 of the hull 11 are provided.
- One of the paths can be selectively communicated with each other by providing the on-off valves 23 and 34 in each path.
- the marine organism adhesion prevention liquid is blown out from the air outlets 14a, 14b, 14c, 14d, and 14e, and marine organisms adhere to the air outlets 14a, 14b, 14c, 14d, and 14e in the hull 11. Since the blower 15 can be stopped at this time, power consumption can be suppressed.
- the blower 15 is moved to the blowing chambers 13a, 13b, 13c, 13d, and 13e via the main air supply path 21 and the sub air supply paths 22a, 22b, 22c, 22d, and 22e.
- the marine organism adhesion prevention device 30 is connected to the auxiliary air supply paths 22a, 22b, and 22c via the main marine organism adhesion prevention liquid supply path 32 and the submarine organism adhesion prevention liquid supply paths 33a, 33b, 33c, 33d, and 33e.
- an open / close valve 23 is provided in the main air supply path 21, and an open / close valve 34 is provided in the main marine organism adhesion prevention liquid supply path 32. Therefore, the air and the marine organism adhesion preventing liquid can be easily switched and supplied simply by opening and closing the on-off valves 23 and 34.
- a plurality of blowing chambers 13a, 13b, 13c, 13d, and 13e are provided along the width direction on the bottom 12 of the hull 11, and the blowing chambers 13a, 13b, 13c, A plurality of air outlets 14a, 14b, 14c, 14d, 14e are provided in 13d, 13e, and the auxiliary marine organism adhesion preventing liquid supply paths 33a, 33b, 33c, 33d, 33e are connected to the auxiliary air supply paths 22a, 22b, 22c, 22d, 22e.
- the main marine organism adhesion preventing liquid can be appropriately supplied to the air outlets 14a, 14b, 14c, 14d, and 14e, and the air outlets 14a, 14b, 14c, It is possible to appropriately prevent marine organisms from adhering to 14d and 14e.
- the hull frictional resistance reduction device of the first embodiment when the navigation speed of the ship is set in advance and is equal to or lower than a predetermined low speed, marine organisms are prevented from adhering to the air outlets 14a, 14b, 14c, 14d, and 14e. Supplying liquid. Accordingly, when a bubble layer is formed on the outer surface of the hull 11 and the frictional resistance of water cannot be reduced sufficiently, the marine organism adhesion preventing liquid is applied to the air outlets 14b, 14c, 14d, and 14e when the speed is below a predetermined low speed. This reduces both the frictional resistance of water acting on the outer surface of the hull 11 and the prevention of the attachment of marine organisms to the air outlets 14a, 14b, 14c, 14d, and 14e. Suppression can be made possible.
- FIG. 2 is a schematic configuration diagram illustrating a hull frictional resistance reduction device according to Embodiment 2 of the present invention.
- symbol is attached
- a plurality of blowing chambers 13 a, 13 b, 13 c, 13 d, and 13 e extend along the width direction of the hull 11. Are arranged in series.
- Each blowing chamber 13a, 13b, 13c, 13d, 13e has a plurality of air blowing ports 14a, 14b, 14c, 14d, 14e formed along the width direction of the hull 11 on the lower surface.
- a blower 15 is installed inside the hull 11, and this blower 15 is connected to the main chamber 19 via an air supply pipe 18.
- a main air supply path 21 is connected to the main chamber 19, and the main air supply path 21 is branched into a plurality of sub air supply paths 22a, 22b, 22c, 22d, and 22e, and the sub air supply paths 22a, 22b, 22c, 22d, and 22e are connected to each blowing chamber 13a, 13b, 13c, 13d, and 13e.
- An open / close valve 23 is attached to the main air supply path 21, and flow control valves 24a, 24b, 24c, 24d, 24e, and shut-off valves 25a, 25b, 25c, 25d, and 25e are attached.
- a pump 26 is installed inside the hull 11, and this pump 26 is connected to a marine organism adhesion prevention device 30 through a seawater supply pipe 29.
- a base end portion of a marine organism adhesion prevention liquid supply path 41 is connected to the marine organism adhesion prevention apparatus 30, and a distal end portion of the marine organism adhesion prevention liquid supply path 41 is connected to the main air supply path 21.
- the tip of the marine organism adhesion preventing liquid supply path 41 is connected to the auxiliary air supply paths 22 a, 22 b, 22 c, 22 d, and 22 e from the on-off valve 23 in the main air supply path 21.
- An open / close valve 42 and a flow rate adjusting valve 43 are attached to the marine organism adhesion preventing liquid supply path 41.
- any one of the air supply means and the marine organism adhesion preventing liquid supply means with respect to the air outlets 14a, 14b, 14c, 14d, 14e (blowing chambers 13a, 13b, 13c, 13d, 13e).
- Switching means for selectively communicating one is provided.
- an on-off valve (first on-off valve) 23 provided on the main air supply path 21 and an on-off valve (second on-off valve) 42 provided on the marine organism adhesion prevention liquid supply path 41 are switched according to the present invention. Functions as a means.
- the on-off valves 20 and 23 and the shut-off valves 25a, 25b, 25c, 25d, and 25e are opened to communicate with the main air supply path 21, while the on-off valve 31 and 42 are closed and the marine organism adhesion prevention liquid supply path 41 is interrupted.
- the blower 15 is operated by the drive motor 16 in this state, after a predetermined amount and a predetermined pressure of air are stored in the main chamber 19, this air flows from the main air supply path 21 to the sub air supply paths 22 a, 22 b, 22 c.
- the on-off valves 20 and 23 are closed to shut off the main air supply path 21 and the drive motor 16 is stopped to blow the blower 15.
- the on-off valves 31 and 42 are opened to communicate with the marine organism adhesion prevention liquid supply path 41.
- the pump 26 is operated by the drive motor 27 and seawater is supplied to the marine organism adhesion prevention device 30, the seawater is electrolyzed to produce sodium hypochlorite, and the produced sodium hypochlorite. Is mixed with seawater to produce a marine organism adhesion prevention liquid.
- the generated marine organism adhesion prevention liquid is supplied from the marine organism adhesion prevention liquid supply path 41 to the main air supply path 21. Then, the marine organism adhesion preventing liquid is supplied from the main air supply path 21 to the blowout chambers 13a, 13b, 13c, 13d, and 13e through the sub air supply paths 22a, 22b, 22c, 22d, and 22e, and the air blowout openings 14a. , 14b, 14c, 14d, and 14e are blown out toward the seawater side.
- the marine organism adhesion preventing liquid is blown out from the air blowing ports 14a, 14b, 14c, 14d, and 14e, thereby preventing the attachment of marine organisms to the air blowing ports 14a, 14b, 14c, 14d, and 14e.
- a plurality of blowing chambers 13a, 13b, 13c, 13d, and 13e are provided along the width direction on the bottom 12 of the hull 11, and the blowing chambers 13a,
- a plurality of air outlets 14 a, 14 b, 14 c, 14 d, and 14 e are provided in 13 b, 13 c, 13 d, and 13 e, and the marine organism adhesion prevention liquid supply path 41 is connected to the main air supply path 21.
- the piping configuration of the marine organism adhesion prevention liquid supply path 41 is simplified, and the equipment is reduced in size and cost. Can be made possible.
- the marine organism adhesion preventing liquid supply path is connected to the main air supply path or the sub air supply path, but the present invention is not limited to this configuration.
- the marine organism adhesion prevention liquid supply path may be directly connected to the blowing chamber.
- the hull frictional resistance reduction device allows marine organisms to adhere to the air outlet of the hull by selectively supplying either air or marine organism adhesion preventing liquid to the air outlet.
- the power consumption can be suppressed and can be applied to any hull.
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Abstract
Description
12 船底部
13a,13b,13c,13d,13e 吹き出しチャンバ
14a,14b,14c,14d,14e 空気吹き出し口
15 ブロア(空気供給源)
19 メインチャンバ
21 主空気供給経路
22a,22b,22c,22d,22e 副空気供給経路
23 開閉弁(第1開閉弁、切換手段)
24a,24b,24c,24d,24e 流量調整弁
25a,25b,25c,25d,25e 遮断弁
26 ポンプ(海洋生物付着防止液供給源)
30 海洋生物付着防止装置(海洋生物付着防止液供給源)
32 主海洋生物付着防止液供給経路
33a,33b,33c,33d,33e 副海洋生物付着防止液供給経路
34 開閉弁(第2開閉弁、切換手段)
35a,35b,35c,35d,35e 流量調整弁
41 海洋生物付着防止液供給経路
42 開閉弁(第2開閉弁、切換手段)
Claims (5)
- 船体の底面に設けられる空気吹き出し口と、
該空気吹き出し口に空気を供給する空気供給手段と、
前記空気吹き出し口に海洋生物付着防止液を供給する海洋生物付着防止液供給手段と、
前記空気吹き出し口に対して前記空気供給手段と前記海洋生物付着防止液供給手段のいずれか一方を選択的に連通させる切換手段と、
を備えることを特徴とする船体摩擦抵抗低減装置。 - 前記空気供給手段は、空気供給源と、該空気供給源と前記空気吹き出し口とを連結する空気供給経路とを有し、
前記海洋生物付着防止液供給手段は、海洋生物付着防止液供給源と、該海洋生物付着防止液供給源と前記空気供給経路とを連結する海洋生物付着防止液供給経路とを有し、
前記切換手段は、前記空気供給経路における前記海洋生物付着防止液供給経路との連結部より前記空気供給源側に設けられた第1開閉弁と、前記海洋生物付着防止液供給経路に設けられた第2開閉弁とを有する、
ことを特徴とする請求項1に記載の船体摩擦抵抗低減装置。 - 前記船体の底部に幅方向に沿って複数の吹き出しチャンバが設けられ、該吹き出しチャンバに前記空気吹き出し口が複数設けられ、
前記空気供給経路は、前記空気供給源から延出された主空気供給経路と、該主空気供給経路から分岐して前記複数の吹き出しチャンバに連結された複数の副空気供給経路とを有し、
前記海洋生物付着防止液供給経路は、前記海洋生物付着防止液供給源から延出された主海洋生物付着防止液供給経路と、該主海洋生物付着防止液供給経路から分岐して前記複数の副空気供給経路に連結された複数の副主海洋生物付着防止液供給経路とを有する、
ことを特徴とする請求項2に記載の船体摩擦抵抗低減装置。 - 前記船体の底部に幅方向に沿って複数の吹き出しチャンバが設けられ、該吹き出しチャンバに前記空気吹き出し口が複数設けられ、
前記空気供給経路は、前記空気供給源から延出された主空気供給経路と、該主空気供給経路から分岐して前記複数の吹き出しチャンバに連結された複数の副空気供給経路とを有し、
前記海洋生物付着防止液供給経路は、前記主空気供給経路に連結される、
ことを特徴とする請求項2に記載の船体摩擦抵抗低減装置。 - 前記切換手段は、船舶の航行速度が予め設定されて所定の低速度以下で、前記空気吹き出し口に対して前記海洋生物付着防止液供給手段を連通させる、
ことを特徴とする請求項2に記載の船体摩擦抵抗低減装置。
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KR1020137008130A KR20130038960A (ko) | 2008-11-21 | 2009-02-12 | 선체 마찰 저항 저감 장치 |
KR1020107029261A KR101281406B1 (ko) | 2008-11-21 | 2009-02-12 | 선체 마찰 저항 저감 장치 |
EP09827392.3A EP2360090B1 (en) | 2008-11-21 | 2009-02-12 | Hull frictional resistance reducing device |
CN200980130097.5A CN102112367B (zh) | 2008-11-21 | 2009-02-12 | 船体摩擦阻力降低装置 |
US13/003,089 US8381668B2 (en) | 2008-11-21 | 2009-02-12 | Device for reducing frictional resistance of ship body |
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JP2008298728A JP5022345B2 (ja) | 2008-11-21 | 2008-11-21 | 船体摩擦抵抗低減装置 |
JP2008-298728 | 2008-11-21 |
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US (1) | US8381668B2 (ja) |
EP (1) | EP2360090B1 (ja) |
JP (1) | JP5022345B2 (ja) |
KR (2) | KR20130038960A (ja) |
CN (1) | CN102112367B (ja) |
WO (1) | WO2010058611A1 (ja) |
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Publication number | Publication date |
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EP2360090B1 (en) | 2013-11-20 |
KR20130038960A (ko) | 2013-04-18 |
EP2360090A1 (en) | 2011-08-24 |
CN102112367A (zh) | 2011-06-29 |
KR20110011714A (ko) | 2011-02-08 |
JP5022345B2 (ja) | 2012-09-12 |
US20110107956A1 (en) | 2011-05-12 |
CN102112367B (zh) | 2014-05-28 |
KR101281406B1 (ko) | 2013-07-02 |
EP2360090A4 (en) | 2012-05-02 |
JP2010120608A (ja) | 2010-06-03 |
US8381668B2 (en) | 2013-02-26 |
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