WO2018139234A1 - Dispositif de type conduit et navire - Google Patents

Dispositif de type conduit et navire Download PDF

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Publication number
WO2018139234A1
WO2018139234A1 PCT/JP2018/000831 JP2018000831W WO2018139234A1 WO 2018139234 A1 WO2018139234 A1 WO 2018139234A1 JP 2018000831 W JP2018000831 W JP 2018000831W WO 2018139234 A1 WO2018139234 A1 WO 2018139234A1
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WO
WIPO (PCT)
Prior art keywords
duct
propeller
divided
divided plates
hull
Prior art date
Application number
PCT/JP2018/000831
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English (en)
Japanese (ja)
Inventor
卓慶 山田
信 川淵
Original Assignee
三菱重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to KR1020187037053A priority Critical patent/KR102152587B1/ko
Publication of WO2018139234A1 publication Critical patent/WO2018139234A1/fr

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B71/00—Designing vessels; Predicting their performance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
    • 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 duct device that is provided at the stern portion of a ship and affects the water flow flowing into the propeller, and to a ship equipped with this duct device.
  • the duct device is the stern of the ship and is provided in front of the hull from the propeller.
  • the duct device obtains thrust by turning the water flow flowing along the hull, and reduces noise and vibration risks by equalizing the inflow speed of the water flow to the propeller.
  • Patent Documents 1 and 2 there are those described in Patent Documents 1 and 2 below.
  • the conventional duct device has a cylindrical shape or a semicylindrical shape, and is fixed to a boss portion covering the propeller shaft via a support member.
  • the optimum elevation angle is obtained by a tank test, etc., but the optimum angle of attack of the duct device may not be achieved depending on the ship speed, loading condition, sea conditions, etc. There is a possibility that it is not done.
  • This invention solves the subject mentioned above, and aims at providing the duct apparatus and ship which aim at the performance improvement by setting it as the duct throttle angle according to the navigation state of a ship.
  • a duct device includes a duct body disposed at least at a part of the periphery of the rotation shaft of the propeller in front of a propeller provided at the stern, and an attachment for attaching the duct body to the hull.
  • a plurality of divided plates that are divided in the circumferential direction of the rotation shaft of the propeller, and an adjustment that adjusts an angle of the plurality of divided plates with respect to the axial direction of the rotation shaft of the propeller.
  • a device is disposed at least at a part of the periphery of the rotation shaft of the propeller in front of a propeller provided at the stern, and an attachment for attaching the duct body to the hull.
  • a plurality of divided plates that are divided in the circumferential direction of the rotation shaft of the propeller, and an adjustment that adjusts an angle of the plurality of divided plates with respect to the axial direction of the rotation shaft of the propeller.
  • the opening area at the inlet or outlet of the water flow in the duct body changes, and the duct throttle angle is adjusted. be able to. Therefore, the duct throttle angle can be adjusted according to the navigational state of the ship, and the duct performance can be improved.
  • the plurality of divided plates are arranged along the axial direction of the rotation shaft of the propeller, and the adjusting device has at least one end portion in the longitudinal direction of the plurality of divided plates at the end of the propeller. It is characterized by being movable along the radial direction of the rotating shaft.
  • the adjusting device moves the end portion of each divided plate along the axial direction of the rotation shaft of the propeller along the radial direction of the rotation shaft of the propeller, so that the water flow at the inlet portion or the outlet portion of the water flow in the duct body.
  • the opening area can be changed, and the duct throttle angle can be easily adjusted.
  • At least one of the plurality of divided plates is fixed to the hull by the mounting member, and the remaining plurality of divided plates are fixed to the hull by the mounting member.
  • the division plate is supported so as to be movable along the radial direction of the rotation shaft of the propeller.
  • At least one divided plate is fixed to the duct body by the mounting member, and the remaining plurality of divided plates are movably supported by the divided plate fixed to the duct body, whereby each divided plate has a predetermined support rigidity. It can be supported by the hull.
  • the duct body has a support member fixed to the hull by the mounting member, and the plurality of divided plates are supported at one end in the longitudinal direction by the support member.
  • the other end portion of the propeller can be moved along the radial direction of the rotation shaft of the propeller by the adjusting device.
  • one end of the plurality of divided plates is supported by a support member fixed to the hull, and the other end can be moved along the radial direction of the rotation shaft of the propeller by the adjusting device.
  • the angle can be adjusted, and each divided plate can be supported on the hull with a predetermined support rigidity.
  • the adjusting device is characterized in that the front end of the hull in the plurality of divided plates can be moved along the radial direction of the rotation shaft of the propeller.
  • the adjustment device can move the front end portions of the plurality of divided plates to adjust the opening area of the inlet portion while keeping the opening area of the outlet portion of the duct body constant, and flows into the propeller from the duct body.
  • the water flow can be kept constant.
  • the adjusting device is characterized in that the rear end of the hull in the plurality of divided plates can be moved along the radial direction of the rotation shaft of the propeller.
  • the adjustment device can move the rear end portions of the plurality of divided plates, thereby adjusting the opening area of the outlet portion while keeping the opening area of the inlet portion of the duct body constant. Can be kept constant.
  • the duct device according to the present invention is characterized in that the adjustment device is disposed inside the support member.
  • the duct device according to the present invention is characterized in that the adjusting device is disposed between the plurality of divided plates.
  • each divided plate can be easily operated by the adjusting device.
  • the duct device of the present invention is characterized in that a stretchable closing member is provided between the plurality of divided plates.
  • the gap between the plurality of divided plates can be eliminated and duct performance can be improved.
  • the adjusting device adjusts the angles of the plurality of divided plates in accordance with a navigation state of the hull.
  • the duct throttle angle can be adjusted to the optimum angle according to the navigation state of the hull, and duct performance can be improved. Can do.
  • the ship of the present invention is characterized by including the duct device of the ship.
  • the duct throttle angle can be adjusted according to the navigational state of the ship, and the duct performance can be improved.
  • the duct device of the present invention as the duct body, a plurality of divided plates that are divided in the circumferential direction of the rotation shaft of the propeller, and an adjustment device that adjusts an angle of the plurality of divided plates with respect to the axial direction of the rotation shaft of the propeller. Therefore, the duct throttle angle can be adjusted according to the navigational state of the ship, and the duct performance can be improved.
  • FIG. 1 is a schematic diagram showing a stern equipped with the duct device of the first embodiment.
  • FIG. 2 is a side view illustrating the duct device according to the first embodiment.
  • FIG. 3 is a front view showing the duct device.
  • FIG. 4 is a schematic diagram illustrating a connecting structure of divided plates.
  • FIG. 5 is a schematic diagram showing the mounting structure of the adjusting device.
  • FIG. 6 is a side view showing the operating state of the duct device.
  • FIG. 7 is a front view illustrating the operating state of the duct device.
  • FIG. 8 is a schematic diagram for explaining the operation of the duct device.
  • FIG. 9 is a front view illustrating a modification of the duct device of the first embodiment.
  • FIG. 10 is a side view illustrating the duct device according to the second embodiment.
  • FIG. 11 is a front view showing the duct device.
  • FIG. 12 is a side view illustrating the duct device according to the third embodiment.
  • FIG. 13 is a side view showing the duct device of the fourth embodiment.
  • FIG. 14 is a front view showing the duct device.
  • FIG. 1 is a schematic diagram showing a stern equipped with the duct device of the first embodiment.
  • the ship is disposed at a rear side of the hull 11 from the propeller 13 provided at the stern 12 of the hull 11, a duct device 14 disposed at the front of the hull 11 from the propeller 13, and the propeller 13. And a rudder 15.
  • the propeller 13 is connected to a power source mounted on the hull 11 via a rotating shaft 21.
  • the power source is, for example, an internal combustion engine such as a diesel engine or an electric motor.
  • the hull 11 is provided with a stern tube 22, and the rotation shaft 21 of the propeller 13 is rotatably supported by the stern tube 22.
  • the power source rotates the propeller 13 via the rotation shaft 21.
  • the propeller 13 can rotate (advance or retreat) on the water by rotating around the axis AX.
  • the ship moves forward by the rotation of the propeller 13.
  • the forward direction is the forward direction of the ship, that is, the bow side of the hull 11
  • the backward direction is the backward direction of the ship, that is, the stern side of the hull 11.
  • the axial direction is the axial direction (axial center AX direction) of the rotating shaft 21 of the propeller 13
  • the circumferential direction is the circumferential direction of the rotating shaft 21
  • the radial direction is the radial direction (radial direction) of the rotating shaft 21. .
  • the duct device 14 obtains thrust by turning the water flow flowing along the hull 11 and reduces the risk of noise and vibration by equalizing the inflow speed of the water flow to the propeller 13.
  • the duct device 14 includes a duct main body 31 disposed in front of the propeller 13 and an attachment member 32 for attaching the duct main body 31 to the hull 11.
  • the duct body 31 has a cylindrical shape and a diaphragm shape in which the rear opening area is smaller than the front opening area.
  • the duct body 31 is disposed in front of the propeller 13 along the periphery of the rotation shaft 21 (axial center AX) of the propeller 13.
  • the duct main body 31 may be disposed at least at a part (for example, only above) around the rotation shaft 21 (axial center AX) of the propeller 13.
  • the duct body 31 is attached to the stern tube 22 of the hull 11 via two attachment members 32.
  • each attachment member 32 is arranged along the horizontal direction on both the left and right sides of the stern tube 22.
  • FIG. 2 is a side view showing the duct device according to the first embodiment
  • FIG. 3 is a front view showing the duct device
  • FIG. 4 is a schematic diagram showing the connecting structure of the divided plates
  • FIG. 5 is the attachment structure of the adjusting device.
  • the duct main body 31 includes a plurality of (in this embodiment, 12) divided plates 33 and 34 and an adjustment device 35 (see FIG. 5).
  • the divided plates 33 and 34 are divided into a plurality of parts in the circumferential direction of the axis AX of the propeller 13 (see FIG. 1), and are divided into two fixed plates 33 on the fixed side and ten divided plates 34 on the movable side. It is comprised by.
  • the two split plates 33 on the fixed side are disposed on both the left and right sides of the stern tube 22 and are fixed to the stern tube 22 via attachment members 32 along the horizontal direction.
  • the ten dividing plates 34 on the movable side are arranged above and below the stern tube 22, and are arranged in a cylindrical shape together with the dividing plate 33.
  • Each divided plate 34 is supported by each divided plate 33.
  • Each divided plate 33, 34 has substantially the same shape, has a so-called wing shape, and is arranged along the axis AX direction of the propeller 13 (see FIG. 1).
  • Each divided plate 33 is fixed to the stern tube 22 via the attachment member 32, and each divided plate 34 is supported at each rear end of each divided plate 33 at the rear end.
  • the adjusting device 35 adjusts the angle of each divided plate 34 with respect to the axis AX direction of the propeller 13 (see FIG. 1).
  • each divided plate 34 includes the connecting rods 35 a and 35 b.
  • the front end portion is connected to the opposing end surfaces 34a of the adjacent divided plates 34.
  • the distal ends of the connecting rods 35a and 35b are connected to the end surfaces 34a of the dividing plate 34 via ball joints (not shown).
  • FIG. 6 is a side view showing the operating state of the duct device
  • FIG. 7 is a front view showing the operating state of the duct device
  • FIG. 8 is a schematic diagram for explaining the operation of the duct device.
  • the adjustment device 35 can move at least one end portion (in the present embodiment, the front end portion) in the longitudinal direction of the plurality of divided plates 34 along the radial direction with respect to the axis AX of the propeller 13 (see FIG. 1). . That is, when the adjusting device 35 is operated from the state shown in FIGS. 2 and 3 (the hydraulic cylinder is extended), as shown in FIGS. The elevation angle ⁇ of the duct body 31 can be increased. On the other hand, when the adjusting device 35 is operated from the state shown in FIG. 6 and FIG. 7 (the hydraulic cylinder is extended and contracted), as shown in FIG. 2 and FIG. The elevation angle ⁇ of the duct body 31 can be reduced.
  • the adjusting device 35 can adjust the angles of the plurality of divided plates 34 in accordance with the navigation state of the hull 11 (see FIG. 1). That is, the adjusting device 35 adjusts the angles of the plurality of divided plates 34 according to the draft position of the hull 11 and the ship speed (navigation speed).
  • the elevation angle ⁇ of the duct body 31 has been set in advance by an experiment with the elevation angle ⁇ for the full draft and the elevation angle ⁇ for the planned ship speed, and the elevation angle ⁇ set according to the full draft is set according to the planned ship speed. Is corrected by the elevation angle ⁇ set as described above.
  • the planned ship speed is a ship speed for securing predetermined navigation performance.
  • the draft position is above the hull 11, and the flow direction angle (the angle with respect to the axial direction in the combined flow velocity of the radial water flow velocity and the axial water flow velocity, (An angle in which the direction of the center side is negative) is increased. Therefore, as shown in FIG. 8, when the loading capacity of the ship is large, the elevation angle ⁇ of the duct body 31 is decreased to the ⁇ 1 side, and when the loading capacity of the ship is small, the elevation angle ⁇ is increased to the ⁇ 2 side. Even if the draft position fluctuates, the effect of the duct device 14 can be sufficiently exhibited. Further, when the boat speed is high, the resistance of the duct body 31 becomes relatively large.
  • the elevation angle ⁇ of the duct body 31 is reduced to the ⁇ 1 side, and when the boat speed is low, the elevation angle ⁇ is increased to the ⁇ 2 side, so that the duct device 14 can be used even if the boat speed fluctuates. So that the effect of can be fully demonstrated.
  • the elevation angle ⁇ of the duct body 31 is adjusted according to the load of the ship before the departure. And since ship speed fluctuates according to a sea state etc., elevation angle (theta) of the duct main body 31 is adjusted according to the fluctuation
  • adjusting the elevation angle ⁇ of the duct main body 31 means that the opening of the outlet portion (the rear end portion of the duct main body 31) with respect to the opening area of the water flow inlet portion (the front end portion of the duct main body 31) in the duct main body 31.
  • the ratio of the area, that is, the duct throttle angle of the duct body 31 is adjusted.
  • FIG. 9 is a front view illustrating a modification of the duct device of the first embodiment.
  • the duct device 14 ⁇ / b> A includes a duct body 31 and an attachment member 32.
  • the duct main body 31 includes a plurality of (in this embodiment, twelve) divided plates 33 and 34 and an adjustment device 35 (see FIG. 5).
  • the two split plates 33 on the fixed side are disposed above and below the stern tube 22 and are fixed to the stern tube 22 via attachment members 32 along the vertical direction.
  • the ten dividing plates 34 on the movable side are arranged on the left and right sides of the stern tube 22, and are arranged in a cylindrical shape together with the dividing plate 33.
  • Each divided plate 34 is supported by each divided plate 33.
  • the number of attachment members 32 of the duct body 31 is two, but may be one or three or more.
  • the number of the fixed-side dividing plates 33 is two and the number of the movable-side dividing plates 34 is ten.
  • the number of the fixed-side dividing plates 33 may be adjusted to the number of the mounting members 32, and the movable side
  • the number of the divided plates 34 is not limited to ten.
  • the duct main body 31 disposed at least part of the periphery of the rotation shaft 21 of the propeller 13 in front of the propeller 13 provided on the stern 12 and the duct main body 31 are provided.
  • the duct body 31 includes a plurality of divided plates 33 and 34 that are divided in the circumferential direction of the rotation shaft 21 of the propeller 13, and the rotation of the propeller 13 of the plurality of divided plates 33 and 34.
  • an adjusting device 35 that adjusts an angle of the shaft 21 with respect to the axis AX direction.
  • the opening area at the inlet or outlet of the water flow in the duct body 31 changes.
  • the duct throttle angle can be adjusted. Therefore, the duct throttle angle can be adjusted according to the navigational state of the ship, and the duct performance can be improved.
  • the plurality of divided plates 33 and 34 are arranged along the axis AX direction of the rotating shaft 21 of the propeller 13, and the adjusting device 35 is a front end of the plurality of divided plates 33 and 34.
  • the portion is movable along the radial direction of the rotating shaft 21 of the propeller 13. Therefore, the opening area at the inlet of the water flow in the duct body 31 can be changed, and the duct throttle angle can be easily adjusted.
  • the two divided plates 33 are fixed to the stern tube 22 by the attachment member 32, and the ten divided plates 34 are fixed to the two divided plates 33 in the radial direction of the rotating shaft 21 of the propeller 13. It is supported so that it can move along. Accordingly, each of the divided plates 33 and 34 can be supported on the hull 11 with a predetermined support rigidity.
  • the adjusting device 35 is capable of moving the front end portions of the plurality of divided plates 34 along the radial direction of the rotating shaft 21 of the propeller 13. Therefore, the opening area of the inlet portion is adjusted with the opening area of the outlet portion of the duct body 31 being constant, and the water flow flowing from the duct body 31 into the propeller 13 can be kept constant.
  • the adjusting device 35 is disposed between the plurality of divided plates 33 and 34. Therefore, each divided plate 34 can be easily operated by the adjusting device 35.
  • the adjusting device 35 adjusts the angles of the plurality of divided plates 34 according to the full draft position and the ship speed as the navigation state of the hull 11. Therefore, the duct throttle angle can be adjusted to the optimum angle according to the navigation state of the hull 11, and the duct performance can be improved.
  • the ship of the first embodiment includes a duct device 14. Therefore, the duct throttle angle can be adjusted according to the navigational state of the ship, and the duct performance can be improved.
  • FIG. 10 is a side view showing the duct device of the second embodiment
  • FIG. 11 is a front view showing the duct device.
  • symbol is attached
  • the duct device 40 includes a duct body 41 and an attachment member 32.
  • the duct main body 41 is disposed along the periphery of the rotation shaft 21 (axial center AX) of the propeller 13 in front of the propeller 13 (see FIG. 1).
  • the duct body 41 includes a support member 42 fixed to the stern tube 22 of the hull 11 (see FIG. 1) by the mounting member 32, a plurality (12 in this embodiment) of divided plates 43, and an adjustment device 44.
  • the support member 42 has a cylindrical shape and a diaphragm shape in which the opening area on the rear side is smaller than the opening area on the front side.
  • the dividing plate 43 is divided into a plurality of parts in the circumferential direction of the axis AX of the propeller 13. Each divided plate 43 is arranged in a cylindrical shape, and one end in the longitudinal direction, in this embodiment, the rear end is supported by the front end of the support member 42.
  • Each divided plate 43 has substantially the same shape, has a so-called wing shape, and is arranged along the axis AX direction of the propeller 13.
  • each of the divided plates 43 is rotatably supported by the support member 42 by a support shaft that is arranged so that each rear end thereof forms a regular dodecagon similar to that of the first embodiment.
  • it is desirable that the length of the duct body 41 in the axial center AX direction and the length of the dividing plate 43 in the axial center AX direction are set to substantially the same length.
  • the angle of the divided plate 43 with respect to the axial center AX direction of the propeller 13 can be adjusted by the adjusting device 44 at the other end portion in the longitudinal direction, in this embodiment, the rear end portion. That is, the adjusting device 44 can move each divided plate 43 along the radial direction of the rotating shaft 21 of the propeller 13.
  • the adjusting device 44 is disposed inside the support member 42.
  • the adjusting device 44 is, for example, a motor, and a drive gear meshes with a rack formed at the rear end of each divided plate 43, and each divided plate 43 is driven via the drive gear and the rack by driving the motor. It can be rotated.
  • the front end portions of the plurality of divided plates 43 can be moved outward in the radial direction, and the elevation angle of the duct body 41 can be adjusted. Then, the ratio of the opening area of the outlet portion (the rear end portion of the support member 42) to the opening area of the inlet portion (the front end portion of each divided plate 43) of the water flow in the duct main body 41, that is, the duct throttle angle of the duct main body 41 Can be adjusted.
  • the duct main body 41 includes the support member 42 that is fixed to the hull 11 by the attachment member 32, and the rear end portions of the plurality of divided plates 43 are the support members.
  • the other end of the front is supported by 42 and can be moved along the radial direction of the rotating shaft 21 of the propeller 13 by the adjusting device 44. Accordingly, the angles of all the divided plates 43 can be adjusted, and each divided plate 43 can be supported on the hull 11 with a predetermined support rigidity.
  • the adjusting device 44 is capable of moving the front end portion of the hull 11 in the plurality of divided plates 43. Therefore, the opening area of the inlet portion is adjusted with the opening area of the outlet portion of the duct body 41 being constant, and the water flow flowing into the propeller can be maintained constant.
  • the adjusting device 44 is disposed inside the support member 42. Therefore, the adjusting device 44 is not exposed to the water flow, and the sealing performance can be improved without the influence of water.
  • each divided plate 43 is disposed in front of the support member 42 and the rear end is supported by the front end of the support member 42.
  • the present invention is not limited to this configuration. Absent.
  • each divided plate 43 may be disposed behind the support member 42 and the front end may be supported by the rear end of the support member 42.
  • FIG. 12 is a side view illustrating the duct device according to the third embodiment.
  • symbol is attached
  • the duct apparatus 50 is provided with the duct main body 51 and the attachment member (not shown).
  • the duct main body 51 is arranged along the periphery of the rotation shaft 21 (axial center AX) of the propeller 13 in front of the propeller 13 (see FIG. 1).
  • the duct body 51 includes a support member 52 fixed to the stern tube 22 of the hull 11 (see FIG. 1) by an attachment member, a plurality (12 in this embodiment) of divided plates 53 and 54, and an adjusting device (illustrated). Abbreviation).
  • the support member 52 has a cylindrical shape and a diaphragm shape in which the rear opening area is smaller than the front opening area.
  • the dividing plate 53 is divided into a plurality of parts in the circumferential direction of the axis AX of the propeller 13. Each divided plate 53 is arranged in a cylindrical shape, and one end portion in the longitudinal direction, in this embodiment, the rear end portion is supported by the front end portion of the support member 52.
  • the dividing plate 54 is divided into a plurality of parts in the circumferential direction of the axis AX of the propeller 13.
  • Each divided plate 54 is arranged in a cylindrical shape, and one end in the longitudinal direction, in this embodiment, the front end is supported by the rear end of the support member 52.
  • the divided plates 53 and 54 have substantially the same shape, have a so-called wing shape, and are arranged along the axis AX direction of the propeller 13. As in the second embodiment, each of the divided plates 53 is rotatably supported on the support member 52 at its rear end by a support shaft (not shown). Each of the other divided plates 54 is rotatably supported on the support member 52 at its front end by a support shaft (not shown).
  • Each of the divided plates 53 has the other end portion in the longitudinal direction, and in this embodiment, the rear end portion can be adjusted with respect to the axis AX direction of the propeller 13 by the adjusting device. That is, the adjusting device can move each divided plate 53 along the radial direction of the rotating shaft 21 of the propeller 13.
  • Each of the divided plates 54 can be adjusted at the other end in the longitudinal direction, in the present embodiment, at the front end by an adjustment device with respect to the axis AX direction of the propeller 13. That is, the adjusting device can move each divided plate 54 along the radial direction of the rotating shaft 21 of the propeller 13.
  • the front end portions of the front divided plates 53 can be moved outward in the radial direction, and the elevation angle of the inlet portion of the duct body 51 can be adjusted. Further, when the adjusting device is operated, each rear end of each rear divided plate 54 can be moved radially outward, and the elevation angle of the outlet portion of the duct main body 51 can be adjusted. Then, the ratio of the opening area of the outlet portion (the rear end portion of each divided plate 54) to the opening area of the inlet portion (the front end portion of each divided plate 53) of the water flow in the duct main body 51, that is, the duct restriction of the duct main body 51. The angle can be adjusted.
  • the duct body 51 has the support member 52 fixed to the hull 11 by the mounting member, and a plurality of divided plates 53 are arranged in front of the mounting member.
  • the rear end portion is supported by the support member 52, the front end portion is movable along the radial direction, and a plurality of divided plates 54 are arranged behind the mounting member to support the front end portion on the support member 52.
  • the front end is movable along the radial direction.
  • the opening area of the inlet portion is adjusted with the opening area of the outlet portion of the duct body 51 being constant, and the water flow flowing into the propeller 13 can be maintained constant.
  • the opening area of the outlet portion is adjusted with the opening area of the inlet portion of the duct body 51 being constant, so that the water flow flowing into the duct body 51 can be kept constant. Further, by adjusting both of the divided plates 53 and 54, the amount of adjustment can be reduced, and the water flow flowing into the propeller 13 and the water flow flowing into the duct body 51 can be maintained substantially constant.
  • FIG. 13 is a side view showing the duct device of the fourth embodiment
  • FIG. 14 is a front view showing the duct device.
  • symbol is attached
  • the duct device 40 ⁇ / b> A includes a duct body 41.
  • the duct body 41 includes a support member 42 fixed to the stern tube 22 by an attachment member, a plurality of divided plates 43, and an adjusting device.
  • the support member 42 has a cylindrical shape and a diaphragm shape in which the opening area on the rear side is smaller than the opening area on the front side.
  • the dividing plate 43 is divided into a plurality of parts in the circumferential direction of the axis AX of the propeller 13.
  • Each divided plate 43 is arranged in a cylindrical shape, and a rear end portion thereof is rotatably supported by a front end portion of the support member 42.
  • Each divided plate 43 has a rear end that can be adjusted with respect to the axis AX direction of the propeller 13 by an adjusting device. That is, the adjusting device can move each divided plate 43 along the radial direction of the rotating shaft 21 of the propeller 13.
  • the plurality of divided plates 43 are provided with rubber closing members 61 having a bellows shape that can be expanded and contracted therebetween. Each closing member 61 can be expanded and contracted following the rotation of the plurality of divided plates 43.
  • the front end portions of the plurality of divided plates 43 can be moved outward in the radial direction, and the elevation angle of the duct body 41 can be adjusted. At this time, the amount of the gap between the divided plates 43 increases and decreases, but the gap between the divided plates 43 can be closed at all times by the expansion and contraction of the closing members 61.
  • the ratio of the opening area of the outlet portion (the rear end portion of the support member 42) to the opening area of the inlet portion (the front end portion of each divided plate 43) of the water flow in the duct main body 41, that is, the duct throttle angle of the duct main body 41 Can be adjusted.
  • the retractable closing member 61 is provided between the plurality of divided plates 43. Therefore, when the respective divided plates 43 are rotated, the amount of the gap between the divided plates 43 increases or decreases. However, the gaps can be closed by the expansion and contraction of the respective closing members 61, thereby improving the duct performance. Can be achieved.
  • the adjustment device when the plurality of divided plates are moved by the adjustment device, all the divided plates are moved in synchronization, but may be moved individually or partially. Good. For example, the occurrence of cavitation may be prevented by moving only the divided plate in the area where cavitation occurs in the duct body.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un dispositif de type conduit et un navire, le dispositif de type conduit comprenant : un corps de conduit (31) qui est disposé sur au moins une partie de la périphérie d'un arbre rotatif (21) d'une hélice (13) davantage vers l'avant que l'hélice (13) qui se trouve à la poupe (12) ; et un élément de montage (32) pour monter le corps de conduit (31) sur un corps de navire (11). Le corps de conduit (31) présente une pluralité de plaques de division (33, 34) qui sont divisées dans la direction circonférentielle de l'arbre rotatif (21) de l'hélice (13) et un dispositif de réglage (35) qui règle les angles de la pluralité de plaques de division (33, 34) par rapport à la direction d'axe AX de l'arbre rotatif (21) de l'hélice (13).
PCT/JP2018/000831 2017-01-27 2018-01-15 Dispositif de type conduit et navire WO2018139234A1 (fr)

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JP2017013553A JP6655562B2 (ja) 2017-01-27 2017-01-27 ダクト装置及び船舶

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EP3943385A1 (fr) * 2020-07-23 2022-01-26 BAE SYSTEMS plc Agencements de conduit et procédés
EP3943387A1 (fr) * 2020-07-23 2022-01-26 BAE SYSTEMS plc Agencement d'influence d'un écoulement liquide et procédé
EP3943386A1 (fr) * 2020-07-23 2022-01-26 BAE SYSTEMS plc Agencement d'influence d'un écoulement liquide et procédé
WO2022018414A1 (fr) * 2020-07-23 2022-01-27 Bae Systems Plc Agencements, agencements de conduit et procédés
WO2022018416A1 (fr) * 2020-07-23 2022-01-27 Bae Systems Plc Agencement pour influencer un écoulement de liquide et procédé
WO2022018415A1 (fr) * 2020-07-23 2022-01-27 Bae Systems Plc Agencement pour influencer un écoulement de liquide et procédé
GB2597661A (en) * 2020-07-23 2022-02-09 Bae Systems Plc Arrangements, duct arrangements and methods thereof
GB2597659A (en) * 2020-07-23 2022-02-09 Bae Systems Plc Arrangements, duct arrangements and methods
GB2597660A (en) * 2020-07-23 2022-02-09 Bae Systems Plc Duct arrangements and methods
CN114889787A (zh) * 2022-03-24 2022-08-12 中国人民解放军海军工程大学 调节船体艉部伴流场的方法
GB2608371A (en) * 2021-06-28 2023-01-04 Bae Systems Plc Duct arrangement and method

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JPS50127384A (fr) * 1974-03-28 1975-10-07
JPS56138092A (en) * 1980-04-01 1981-10-28 Hitachi Zosen Corp Vessel provided with nozzle
JPH0211491A (ja) * 1988-03-01 1990-01-16 Lips Bv 船舶用流れ案内体
JPH082486A (ja) * 1994-04-19 1996-01-09 Mitsui Eng & Shipbuild Co Ltd 船 舶
KR20120068158A (ko) * 2010-12-17 2012-06-27 현대중공업 주식회사 선박용 틸팅덕트 구조체

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2597661A (en) * 2020-07-23 2022-02-09 Bae Systems Plc Arrangements, duct arrangements and methods thereof
EP3943387A1 (fr) * 2020-07-23 2022-01-26 BAE SYSTEMS plc Agencement d'influence d'un écoulement liquide et procédé
EP3943386A1 (fr) * 2020-07-23 2022-01-26 BAE SYSTEMS plc Agencement d'influence d'un écoulement liquide et procédé
WO2022018414A1 (fr) * 2020-07-23 2022-01-27 Bae Systems Plc Agencements, agencements de conduit et procédés
WO2022018416A1 (fr) * 2020-07-23 2022-01-27 Bae Systems Plc Agencement pour influencer un écoulement de liquide et procédé
WO2022018415A1 (fr) * 2020-07-23 2022-01-27 Bae Systems Plc Agencement pour influencer un écoulement de liquide et procédé
EP3943385A1 (fr) * 2020-07-23 2022-01-26 BAE SYSTEMS plc Agencements de conduit et procédés
GB2597659A (en) * 2020-07-23 2022-02-09 Bae Systems Plc Arrangements, duct arrangements and methods
GB2597660A (en) * 2020-07-23 2022-02-09 Bae Systems Plc Duct arrangements and methods
GB2597661B (en) * 2020-07-23 2024-05-22 Bae Systems Plc Arrangements, duct arrangements and methods
GB2608371A (en) * 2021-06-28 2023-01-04 Bae Systems Plc Duct arrangement and method
CN114889787A (zh) * 2022-03-24 2022-08-12 中国人民解放军海军工程大学 调节船体艉部伴流场的方法
CN114889787B (zh) * 2022-03-24 2023-03-21 中国人民解放军海军工程大学 调节船体艉部伴流场的方法

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KR102152587B1 (ko) 2020-09-07
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KR20190008945A (ko) 2019-01-25

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