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WO2014125881A1 - Dispositif pour rendre linéaire un écoulement de sillage d'hélice - Google Patents

Dispositif pour rendre linéaire un écoulement de sillage d'hélice Download PDF

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Publication number
WO2014125881A1
WO2014125881A1 PCT/JP2014/051194 JP2014051194W WO2014125881A1 WO 2014125881 A1 WO2014125881 A1 WO 2014125881A1 JP 2014051194 W JP2014051194 W JP 2014051194W WO 2014125881 A1 WO2014125881 A1 WO 2014125881A1
Authority
WO
WIPO (PCT)
Prior art keywords
rudder
propeller
shape
bulging portion
wake
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2014/051194
Other languages
English (en)
Japanese (ja)
Inventor
信 川淵
大島　明
真一 ▲高▼野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of WO2014125881A1 publication Critical patent/WO2014125881A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/20—Hubs; Blade connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • 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
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system

Definitions

  • the present invention relates to a ladder horn that supports a rudder of a ship so as to be swingable.
  • a Costa valve in which a streamlined bulge is formed on a control surface of a rudder on a propeller axis is known as an addition to improve the propulsion efficiency of a screw propeller that propels a ship (hereinafter simply referred to as a propeller).
  • a propeller By forming the Costa valve on the control surface behind the propeller, the propulsion efficiency of the propeller can be improved.
  • Patent Document 1 discloses a propulsion steering apparatus in which a Costa valve is formed on a rudder blade (rudder surface).
  • the propulsion steering apparatus described in Patent Document 1 includes a propeller, a fairing disposed at the rear of the propeller, a rudder disposed behind the propeller, and a valve-shaped main body formed on a rudder blade of the rudder. And have.
  • a streamlined main body is formed by the fairing and the valve-shaped main body.
  • the streamlined main body is continuously formed except for a narrow gap between the fairing and the valve-shaped main body. Furthermore, the propulsion steering apparatus described in Patent Document 1 can swing the valve-shaped body relative to the fairing when the rudder blade rotates. A flap is disposed at the rear of the rudder blade.
  • Patent Document 2 discloses a boat rudder that avoids the rudder corrosion phenomenon caused by cavitation generation and suppresses fuel consumption.
  • the marine rudder described in Patent Document 2 is a twisted ladder having two surfaces formed at different angles of attack at the top and bottom after the propeller shaft extension, and a flow body is provided at a transition portion of the two surfaces having different angles of attack. It has been.
  • An object of the present invention is to provide a ladder horn that improves the propulsion performance when a ship is steered.
  • the propeller wake rectifier according to the present invention includes a ladder horn, which is disposed behind the propeller in the hull and supports the rudder so that it can swing. Further, the ladder horn has a streamlined bulge formed on a side wall surface on an extension line of the propeller shaft (PC).
  • PC propeller shaft
  • the rudder surface can be formed with a rudder surface bulge that is connected to the streamlined bulge.
  • the rudder can be a high-lift rudder whose horizontal cross-sectional shape is a fish shape.
  • the rudder can be a semi-balanced rudder.
  • the rudder horn may include a rudder needle that supports a lower portion of the rudder on a rudder shaft.
  • the rudder can be an unbalanced rudder.
  • the propeller wake rectifier may include a boss cap attached to a rear end portion of the propeller shaft, and having a side wall surface formed in a shape connected to the streamline-shaped bulge portion. .
  • a streamlined bulging portion is formed on the side wall surface on the extension line of the propeller shaft in the ladder horn, so that it is possible to suppress a reduction in propulsion performance that occurs during ship steering.
  • FIG. 1 is a side view of a propeller wake rectifier according to a first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the vicinity of the propeller wake rectifier shown in FIG.
  • FIG. 3 is a cross-sectional view taken along the line BB showing a configuration example of the bulging portion shown in FIG.
  • FIG. 4 is a cross-sectional view taken along the line BB showing a configuration example of the bulging portion shown in FIG.
  • FIG. 5 is a cross-sectional view taken along the line BB showing a configuration example of the bulging portion shown in FIG.
  • FIG. 6 is a side view of a propeller wake rectifier according to a second embodiment of the present invention.
  • FIG. 1 is a side view of a propeller wake rectifier according to a first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the vicinity of the propeller wake rectifier shown in FIG.
  • FIG. 3 is a cross-sectional view taken along the
  • FIG. 7 is a side view of a propeller wake rectifier according to a third embodiment of the present invention.
  • FIG. 8 is a side view of a propeller wake rectifier according to a fourth embodiment of the present invention.
  • 9 is a cross-sectional view of the rudder shown in FIG.
  • FIG. 10 is a side view of a propeller wake rectifier according to a fifth embodiment of the present invention.
  • FIG. 11 is a cross-sectional view of the vicinity of the propeller wake rectifier shown in FIG.
  • FIG. 12 is a side view of a propeller wake rectifier according to a sixth embodiment of the present invention.
  • FIG. 1 is a diagram for explaining a propeller wake rectifier 10 according to a first embodiment of the present invention, and is a side view of the vicinity of a steering device and a steering device disposed in the water.
  • 2 is a cross-sectional view taken along the line AA of the propeller wake rectifier 10 shown in FIG. 1 taken along a horizontal plane.
  • a rudder horn 12 that supports the rudder 16 in a swingable manner in the port and starboard directions (LR direction shown in FIG. 2) around the RC is disposed.
  • a rudder material (not shown) is arranged on the rudder shaft RC of the rudder 16 as necessary, and a rudder needle (not shown) is arranged on the rudder shaft RC of the rudder horn 12 as needed.
  • the propeller hub 22 rotates around the propeller shaft PC.
  • the propeller 20 is radially attached to the side wall surface of the propeller hub 22.
  • the propeller hub 22 is attached to a propeller shaft (not shown) that protrudes rearward from the hull 30.
  • the ladder horn 12 is arranged behind the propeller 20 and suspended from the ship bottom at a position between the rudder 16 and the rudder 16.
  • a bulging portion 14 formed in a streamline shape from the side wall surface to the rear edge is disposed behind the propeller hub 22 on the extension line of the propeller shaft PC.
  • the bulging portion 14 is formed on the side wall surface of the ladder horn 12 where the positional relationship with the propeller shaft PC does not change even when the rudder 16 is steered.
  • the rear end surface of the propeller hub 22 and the front end surface of the bulging portion 14 are arranged with a slight gap (about 10 to 800 mm, the same applies hereinafter),
  • the side wall surfaces with the bulging part 14 are formed in a shape that is connected in a streamlined form. Thereby, the resistance by a water flow can be reduced.
  • the bulging portion 14 can have a hollow structure or a solid structure.
  • the maximum value of the cross-sectional area perpendicular to the propeller axis PC in the bulging portion 14 can be 80 to 150% of the cross-sectional area of the propeller hub 22.
  • the rear end surface of the propeller hub 22 and the front end surface of the bulging portion 14 can be configured as a plane, and the gap Can also be narrowed.
  • the ladder horn 12 is detachably fixed to the hull 30 with a bolt or the like at the detachable portion 13.
  • the rudder horn 12 can be removed from the hull 30 to improve workability.
  • the arrangement of the attaching / detaching portion 13 can be appropriately set according to the structure of the hull 30.
  • the bulging part 14 is an additional member that rectifies the propeller wake, reduces the contraction of the propeller wake, suppresses the formation of cone vortex (hub vortex), makes the wake uniform, and obtains the wake gain. be able to. Further, by making the bulging portion 14 and the propeller hub 22 smoothly connect while maintaining a streamlined shape, it is possible to easily obtain the diffusion effect of the hub vortex generated from the blade root portion of the propeller 20. Furthermore, since the increase in resistance at the rudder 16 can be reduced, the propulsion performance can be improved and the fuel consumption rate can be improved while using a relatively inexpensive structure.
  • a Costa valve is formed on the rudder 16.
  • the Costa valve coincides with the propeller shaft PC during straight travel, but shifts from the propeller shaft PC during steering, so that the rectifying action of the propeller wake at the time of steering is significantly reduced.
  • the propeller 20 is used both during straight travel and during steering. Can improve the propulsion performance.
  • FIGS. 3 to 5 are sectional views taken along the line BB in the vicinity of the bulging portion 14 shown in FIG.
  • the cross-sectional shape in the vertical direction of the bulging portion 14 can be a circular cross-sectional shape as shown in FIG. Further, as shown in FIG. 4, the cross-sectional shape of the bulging portion 14 may be a cross-sectional shape in which fins protrude in the horizontal direction. Further, as the cross-sectional shape of the bulging portion 14, as shown in FIG. 5, an elliptical cross-sectional shape or an elliptical cross-sectional shape may be used.
  • the rudder horn 12 behind the propeller hub 22 on the extension line of the propeller shaft PC is provided with a bulging portion 214 formed into a streamline shape from the front edge to the side wall surface and the rear edge.
  • the propulsion performance is improved by the propeller 20 both when traveling straight and during steering, by forming the bulging portion 214 at a spaced position behind the propeller hub 22. The same effect as that of the first embodiment can be obtained.
  • a boss cap 26 that rotates integrally with the propeller hub 22 is attached to the rear part of the propeller hub 22.
  • a bulging portion 314 formed in a streamline shape from the side wall surface to the rear edge is disposed on the ladder horn 12 behind the boss cap 26 on the extension line of the propeller shaft PC.
  • the rear end surface of the boss cap 26 and the front end surface of the bulging portion 314 are arranged with a slight gap, and the side wall surfaces of the boss cap 26 and the bulging portion 314 are located between each other. It is molded into a streamlined shape. Thereby, the resistance by a water flow can be reduced.
  • the boss cap 26 is attached to the rear portion of the propeller hub 22, and the bulging portion 314 is formed at a position through the gap behind the boss cap 26.
  • the external shape of the side wall surface of the boss cap 26 may be a drum shape as shown in FIG. 7, or may be a drum shape having a convex shape when viewed from the side, if necessary.
  • FIG. 9 is a cross-sectional view of the rudder shown in FIG.
  • symbol is attached
  • the ladder horn 412 behind the propeller hub 22 on the extension line of the propeller shaft PC is provided with a bulging portion 414 formed in a streamline shape from the side wall surface to the rear edge.
  • the ladder horn 412 is extended to the lower side of the unbalanced rudder rudder 416, and the rudder horn 412 supports the rudder 416 at two upper and lower positions (lower pintle type).
  • the ladder horn 412 includes a rudder needle (pintle) 17 that supports the lower portion of the rudder 416 on the rudder axis RC.
  • the rear end surface of the propeller hub 22 and the front end surface of the bulging portion 414 are arranged with a slight gap therebetween, and the side of the propeller hub 22 and the bulging portion 414 is disposed.
  • the wall surfaces are molded into a streamlined shape. Thereby, the resistance by a water flow can be reduced.
  • a high lift rudder 416 (shilling rudder) having a fish-shaped horizontal cross section as shown in FIGS. 8 and 9 can be used. Since the high rudder rudder 416 has little resistance (drag) when obtaining a predetermined turning force, the fuel consumption rate can be further improved by combining with the propeller wake rectifier according to the present invention. Further, as shown in FIGS. 8 and 9, a rectifying plate 415 having a shape extending in the left-right direction can be arranged at the upper end or the lower end of the rudder 416. By arranging the current plate 415, the lift of the rudder 416 during steering can be increased. This baffle plate 415 can be applied to the rudder of other embodiments.
  • the propulsion performance is improved by the propeller 20 both during straight traveling and during steering, and is the same as in the first embodiment.
  • the effect of can be obtained.
  • the structure connected with the ship bottom of the hull 30 via the shoe piece (not shown) which passes the lower part of the propeller 20 in the lower part of a ladder horn is also employable.
  • FIGS. 10 and 11 are cross-sectional views taken along the line DD in the vicinity of the propeller wake rectifier 510 shown in FIG.
  • description of structures such as a propeller shaft and a bearing is omitted.
  • symbol is attached
  • a boss cap 26 that rotates integrally with the propeller hub 22 is attached to the rear portion of the propeller hub 22.
  • a bulging portion 514 whose side wall surface is formed into a streamline shape is disposed.
  • a rudder surface bulging portion 515 is formed on the rudder surface of the rudder 16 further rearward of the bulging portion 514.
  • the rudder surface bulging portion 515 is formed in a streamlined shape with the side wall surface of the bulging portion 514.
  • the horizontal cross-sectional shape near the front edge of the rudder surface bulging portion 515 is It is necessary to form it in the shape of an arc centering on the axis RC.
  • the shape of the rear end of the bulging portion 514 also needs to be formed in an arc shape centered on the rudder shaft RC in accordance with the front edge shapes of the control surface bulging portion 515 and the rudder 16. And as shown in FIG. 10, it is suitable for the side shape which observed the rear-end part of the bulging part 514 from the side surface to be the rear-end convex shape 513 convex toward back.
  • a bulging portion 514 is formed behind the boss cap 26 with a slight gap, and a control surface bulging portion 515 is formed further behind with a slight gap.
  • the propulsion performance can be improved by the propeller 20 both during straight travel and during steering, and the same effect as that of the first embodiment can be obtained.
  • a boss cap 26 that rotates integrally with the propeller hub 22 is attached to the rear portion of the propeller hub 22.
  • a bulging portion 614 having a side wall surface formed into a streamline shape is disposed on the ladder horn 12 behind the boss cap 26 on the extension line of the propeller shaft PC.
  • a rudder surface bulging portion 615 is formed on the rudder surface of the rudder 16 further rearward of the bulging portion 614.
  • the rudder surface bulging portion 615 is formed in a streamlined shape with the side wall surface of the bulging portion 614.
  • the side view shape of the bulging portion 514 is a rear end convex shape 513 that is convex toward the rear.
  • the side view shape of the bulging portion 614 in the embodiment shown in FIG. 12 is a rear end concave shape 613 that is concave toward the rear.
  • a bulging portion 614 is formed behind the boss cap 26 with a slight gap, and a control surface bulging portion 615 is formed further behind with a slight gap.
  • the propulsion performance can be improved by the propeller 20 during both straight travel and steering, and the same effect as that of the first embodiment can be obtained.
  • the propeller wake rectifier according to the present invention has been described above with reference to the embodiment.
  • the propeller wake rectifier according to the present invention is not limited to the above embodiment.
  • Various modifications can be made to the above embodiment. It is possible to combine the matters described in the above embodiment with the matters described in the other embodiments.

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

Abstract

La présente invention porte sur un dispositif pour rendre linéaire un écoulement de sillage d'hélice, et, en particulier, sur une trompe de gouvernail qui est installée à l'arrière d'une hélice d'un navire et qui porte de façon oscillante un gouvernail. Une section de renflement carénée (14) est formée sur des surfaces de paroi latérale de la trompe de gouvernail dans une position sur une ligne de prolongement à partir de l'axe de l'hélice.
PCT/JP2014/051194 2013-02-15 2014-01-22 Dispositif pour rendre linéaire un écoulement de sillage d'hélice Ceased WO2014125881A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-027889 2013-02-15
JP2013027889A JP2014156185A (ja) 2013-02-15 2013-02-15 プロペラ後流整流装置

Publications (1)

Publication Number Publication Date
WO2014125881A1 true WO2014125881A1 (fr) 2014-08-21

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Application Number Title Priority Date Filing Date
PCT/JP2014/051194 Ceased WO2014125881A1 (fr) 2013-02-15 2014-01-22 Dispositif pour rendre linéaire un écoulement de sillage d'hélice

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JP (1) JP2014156185A (fr)
WO (1) WO2014125881A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115052810A (zh) * 2020-01-30 2022-09-13 现代重工业株式会社 转向装置及具有其的船舶

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6203349B1 (ja) * 2016-09-06 2017-09-27 ジャパンマリンユナイテッド株式会社 船舶用舵

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH053438Y2 (fr) * 1985-12-17 1993-01-27
JPH082486A (ja) * 1994-04-19 1996-01-09 Mitsui Eng & Shipbuild Co Ltd 船 舶
WO1997011878A1 (fr) * 1995-09-29 1997-04-03 Wärtsilä Nsd Norway As Ensemble de propulsion et de gouverne de navire
JP2000280984A (ja) * 1999-03-30 2000-10-10 Sumitomo Heavy Ind Ltd 舵
JP2004074886A (ja) * 2002-08-13 2004-03-11 Mitsubishi Heavy Ind Ltd 船舶

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH053438Y2 (fr) * 1985-12-17 1993-01-27
JPH082486A (ja) * 1994-04-19 1996-01-09 Mitsui Eng & Shipbuild Co Ltd 船 舶
WO1997011878A1 (fr) * 1995-09-29 1997-04-03 Wärtsilä Nsd Norway As Ensemble de propulsion et de gouverne de navire
JP2000280984A (ja) * 1999-03-30 2000-10-10 Sumitomo Heavy Ind Ltd 舵
JP2004074886A (ja) * 2002-08-13 2004-03-11 Mitsubishi Heavy Ind Ltd 船舶

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115052810A (zh) * 2020-01-30 2022-09-13 现代重工业株式会社 转向装置及具有其的船舶
CN115052810B (zh) * 2020-01-30 2024-06-07 现代重工业株式会社 转向装置及具有其的船舶

Also Published As

Publication number Publication date
JP2014156185A (ja) 2014-08-28

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