WO2018139138A1 - Dispositif de conduit et navire - Google Patents

Dispositif de conduit et navire Download PDF

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Publication number
WO2018139138A1
WO2018139138A1 PCT/JP2017/046307 JP2017046307W WO2018139138A1 WO 2018139138 A1 WO2018139138 A1 WO 2018139138A1 JP 2017046307 W JP2017046307 W JP 2017046307W WO 2018139138 A1 WO2018139138 A1 WO 2018139138A1
Authority
WO
WIPO (PCT)
Prior art keywords
duct
end portion
rear end
propeller
inner duct
Prior art date
Application number
PCT/JP2017/046307
Other languages
English (en)
Japanese (ja)
Inventor
信 川淵
卓慶 山田
雅也 窪田
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 KR1020197015060A priority Critical patent/KR102154472B1/ko
Publication of WO2018139138A1 publication Critical patent/WO2018139138A1/fr

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Classifications

    • 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

Definitions

  • the thrust flowing in the propeller of the stern is used to obtain the thrust in the propulsion direction generated by the inner duct and the outer duct, respectively, or by the increase of the wake
  • the wake coefficient can be increased.
  • the output of the power source that moves the propeller is suppressed, and the propulsion efficiency of the ship can be improved.
  • further improvement in propulsion efficiency is expected by improving the duct device.
  • the inner duct and the outer duct may be formed as at least a part of a cylindrical body.
  • the opening area of the inter-duct inlet defined by the front end portion of the inner duct and the front end portion of the outer duct is defined by the rear end portion of the inner duct and the rear end portion of the outer duct.
  • the ship 50 moves forward by the rotation of the propeller 101.
  • the bow is disposed forward and the stern 100B is disposed rearward with respect to the traveling direction of the ship 50 moving forward.
  • the forward direction of the traveling direction of the marine vessel 50 will be simply referred to as “front”, and the rear side of the forward direction of the marine vessel will be simply referred to as “rear”.
  • a direction parallel to the rotation axis AX of the shaft 103 is appropriately referred to as an axial direction, and a radial direction with respect to the rotation axis AX is appropriately referred to as a radial direction.
  • the cross section of the stay 4 has an airfoil shape and is formed so as not to obstruct the flow of water (seawater) in the inner duct 2 and the outer duct 3.
  • the cross-sectional shape of the stay 4 may be not only an airfoil shape but also an elliptical shape or a semi-elliptical shape.
  • the diameter from the rotation axis AX to the rear end 22 of the inner duct 2 is r
  • the distance L1 in the direction is 0.3r or more and 0.5r or less
  • the radial distance L3 from the rotation axis AX to the rear end portion 32 of the outer duct 3 is 0.5r or more and 0.9r or less. Is preferred.
  • a radial distance L2 (L3-L1) between the rear end portion 22 of the inner duct 2 and the rear end portion 32 of the outer duct 3 is set to 0.2r to 0.4r.
  • the opening area Ao of the inter-duct outlet 8 is formed larger than the opening area Ai of the inter-duct inlet 7.
  • the airfoil outer surface 36 ⁇ / b> A of the outer duct 3 ⁇ / b> A is formed in a slightly concave curved shape
  • the trailing edge 34 ⁇ / b> A of the airfoil of the outer duct 3 ⁇ / b> A is the rotation axis AX of the shaft 103. Is curved in the radial direction.
  • the front end portion 21 of the inner duct 2 and the front end portion 31 of the outer duct 3 are located on a predetermined same plane F1 perpendicular to the rotation axis AX of the shaft 103
  • the rear end portion 22 of the inner duct 2 and the rear end portion 32 of the outer duct 3 are located on a predetermined same plane F2 perpendicular to the rotation axis AX of the shaft 103.
  • the airfoil chord line 27 of the inner duct 2 and the airfoil chord line 37 of the outer duct 3 are formed by an angle ⁇ formed by the chord lines 27 and 37 and a line parallel to the rotational axis AX.
  • the inner duct 2 and the outer duct 3 are arranged such that the chord lines 27 and 37 are substantially parallel to each other.
  • the rear end portion 22E of the inner duct 2E and the rear end portion 32E of the outer duct 3E are located on a predetermined same plane F2 perpendicular to the rotational axis AX of the shaft 103.
  • the airfoil chord line 27E of the inner duct 2E and the airfoil chord line 37E of the outer duct 3E are formed by an angle ⁇ formed by the chord lines 27E and 37E and a line parallel to the rotational axis AX.
  • the inner duct 2E and the outer duct 3E are arranged so that the chord lines 27E and 37E are substantially parallel to each other.

Landscapes

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

Abstract

L'invention concerne un dispositif de conduit (1) pourvu d'un conduit interne (2), d'un conduit externe (3) et d'une barre de force. La surface d'ouverture Ao d'un orifice de sortie (8) entre des conduits définis par une partie d'extrémité arrière (22) du conduit interne (2) et une partie d'extrémité arrière (32) du conduit externe (3) est formée pour être plus grande qu'une surface d'ouverture Ai d'un orifice d'entrée (7) entre des conduits définis par une partie d'extrémité avant (21) du conduit interne (2) et une partie d'extrémité avant (31) du conduit externe (3).
PCT/JP2017/046307 2017-01-27 2017-12-25 Dispositif de conduit et navire WO2018139138A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020197015060A KR102154472B1 (ko) 2017-01-27 2017-12-25 덕트 장치 및 선박

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-013266 2017-01-27
JP2017013266A JP6811629B2 (ja) 2017-01-27 2017-01-27 ダクト装置および船舶

Publications (1)

Publication Number Publication Date
WO2018139138A1 true WO2018139138A1 (fr) 2018-08-02

Family

ID=62979628

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/046307 WO2018139138A1 (fr) 2017-01-27 2017-12-25 Dispositif de conduit et navire

Country Status (3)

Country Link
JP (1) JP6811629B2 (fr)
KR (1) KR102154472B1 (fr)
WO (1) WO2018139138A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7405787B2 (ja) 2021-03-23 2023-12-26 三井Ｅ＆Ｓ造船株式会社 船尾ダクト

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963100U (ja) * 1982-10-22 1984-04-25 三菱重工業株式会社 リアクシヨンフイン
JPS60139699U (ja) * 1984-02-29 1985-09-14 三菱重工業株式会社 船舶用ノズル装置
US5928042A (en) * 1998-03-26 1999-07-27 Glenn F. Mattina Propeller guard
KR20140015929A (ko) * 2012-07-27 2014-02-07 현대중공업 주식회사 선박용 추진 장치
KR20140015925A (ko) * 2012-07-27 2014-02-07 현대중공업 주식회사 선박용 추진 장치

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5025247B2 (ja) * 2006-12-13 2012-09-12 ユニバーサル造船株式会社 船舶用ダクトおよび船舶用ダクト付き船舶

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963100U (ja) * 1982-10-22 1984-04-25 三菱重工業株式会社 リアクシヨンフイン
JPS60139699U (ja) * 1984-02-29 1985-09-14 三菱重工業株式会社 船舶用ノズル装置
US5928042A (en) * 1998-03-26 1999-07-27 Glenn F. Mattina Propeller guard
KR20140015929A (ko) * 2012-07-27 2014-02-07 현대중공업 주식회사 선박용 추진 장치
KR20140015925A (ko) * 2012-07-27 2014-02-07 현대중공업 주식회사 선박용 추진 장치

Also Published As

Publication number Publication date
JP2018118699A (ja) 2018-08-02
KR20190066634A (ko) 2019-06-13
KR102154472B1 (ko) 2020-09-10
JP6811629B2 (ja) 2021-01-13

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