WO2017187597A1 - Propulsion device for multi-shaft ship - Google Patents
Propulsion device for multi-shaft ship Download PDFInfo
- Publication number
- WO2017187597A1 WO2017187597A1 PCT/JP2016/063353 JP2016063353W WO2017187597A1 WO 2017187597 A1 WO2017187597 A1 WO 2017187597A1 JP 2016063353 W JP2016063353 W JP 2016063353W WO 2017187597 A1 WO2017187597 A1 WO 2017187597A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- propeller
- ship
- diameter
- appendage
- hull
- Prior art date
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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
- B63H1/28—Other means for improving propeller efficiency
-
- 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
- B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
Definitions
- the present invention relates to a propulsion device for a multi-axis ship.
- Patent Document 1 describes a ship propulsion performance improving device including a valve and a pair of left and right fins at a position on the propeller axis of the front edge of a rudder disposed behind the propeller.
- Patent Document 2 describes a twin-skeg ship with two shafts and two rudder provided with a valve and a fin on the rudder behind the left and right propellers.
- valves and fins can be placed behind the propeller by attaching to the rudder if the rudder is provided immediately after the propeller, but depending on the type of the ship, the rudder is located behind the propeller. May not be provided. That is, in the case of a single-shaft ship, a rudder is provided behind a propeller equipped with only one unit, but in the case of a triaxial ship, for example, if sufficient maneuverability can be obtained with only the rudder arranged behind the center propeller. The rudder is only required to be installed on the center propeller, and is often not installed behind the wing propeller.
- two propellers may be provided on the left and right sides of the stern, and only one rudder may be arranged at the center rear (two-shaft one-ruder boat). There is no rudder placed on. The situation is the same for ships with four or more axes. In other words, there are propellers that do not have a rudder on the back of multi-axle ships with two or more axes. In such propellers, there are no suitable structures behind them, so valves and fins as described above are installed. Can not do it. As described above, depending on the type of the multi-axis ship, there is a propeller that cannot reduce the hub vortex due to the addition, and this has been a factor that hinders the improvement of the propulsion efficiency.
- the present invention intends to provide a propulsion device for a multi-axis ship that can improve propulsion efficiency of the propeller in the multi-axis ship.
- the present invention relates to a propulsion device for a multi-shaft ship in which an appendage for reducing hub vortices is arranged behind a propeller, which is not arranged with a rudder, via a support extending from the hull.
- the appendage has a spindle shape having a circular cross section in a direction orthogonal to a central axis extending in a hull direction, and a diameter decreasing toward a rear end side at a rear portion thereof. It is preferable to have a shape.
- the additional material has a maximum diameter of 10% to 40% with respect to the diameter of the propeller, and a length in a hull direction of 40% with respect to the diameter of the propeller. It is preferable that it is 70% or less.
- the multi-shaft propulsion device of the present invention can be applied to a wing propeller of a triaxial ship.
- the propulsion device for a multi-axis ship of the present invention it is possible to achieve an excellent effect that the propulsion efficiency of the propeller in the multi-axis ship can be improved.
- FIG. 1 It is a figure showing roughly an example of the whole structure of a multi-axis ship to which the present invention is applied. It is a figure which shows an example of the form of the propulsion apparatus of the multi-axis ship by implementation of this invention, and is a figure which expands and shows the principal part of FIG. It is a figure which shows another example of the form of the propulsion apparatus of the multi-axis ship by implementation of this invention.
- a multiaxial ship (triaxial ship) 1 includes a single unit provided at the stern center of a hull 2. It has a total of three propellers, a propeller (center propeller) 3 and a propeller (wing propeller) 4 arranged on the left and right respectively.
- a rudder 5 is disposed behind the center propeller 3, and a valve-shaped appendage 6 is installed on the rudder 5 at the axial line height of the center propeller 3.
- the appendage 6 is an object having a spindle-like shape that has a circular cross section in a direction orthogonal to the central axis extending in the hull direction, for example, and has a spindle shape that decreases in diameter toward the rear end side at the rear part. It is provided so that it may protrude toward the center propeller 3 from the front edge.
- the center propeller 3 is configured to suppress the hub vortex generated with the rotation of the center propeller 3.
- the rudder is not arrange
- the support 7 is a plate-like member extending from the bottom of the hull 2 to the rear of the wing propeller 4.
- the support 7 is formed as a vertical plane along the hull direction so as not to increase the hull resistance as much as possible, and the cross section along the horizontal plane has a streamlined shape.
- An appendage 8 is supported at the lower end of the support 7 at the axial height of the wing propeller 4.
- the appendage 8 is an object having a circular cross section in a direction orthogonal to the central axis extending in the hull direction, like the above-described appendage 6, and the rear portion is configured in a spindle shape whose diameter decreases toward the rear end side. ing.
- the position of the central axis is set to coincide with the axis line of the wing propeller 4.
- the hub vortex generated behind the wing propeller 4 is suppressed by the addition 8.
- the diameter of the appendage 8 is preferably 10% or more and 40% or less with respect to the diameter of the wing propeller 4 at the maximum position near the front end. Is 20% or more and 30% or less.
- the length of the appendage 8 in the hull direction is preferably 40% or more and 70% or less, and more preferably 50% or more and 60% or less with respect to the diameter of the wing propeller 4.
- a valve-shaped appendage 6 is arranged on the rudder 5 behind the center propeller 3, and the diameter is about 25% of the diameter of the wing propeller 4 and the length is the diameter of the wing propeller 4.
- the addendum 8 set to about 56% is installed behind the left and right wing propellers 4, the total horsepower of the center propeller 3 and the two wing propellers 4 and 4 is compared to the case where the appendages 6 and 8 are not provided. It has been clarified by the water tank test by the present applicant that the horsepower of the entire triaxial ship 1 is reduced by about 6%.
- the rudder 5 behind the center propeller 3 may not be equipped with an appendage, and the appendage 8 may be disposed only behind the wing propeller 4. In this case, the triaxial ship 1 as a whole The horsepower reduction rate was about 4%.
- the support 7 may be provided with a fin-like appendage 9 projecting left and right, for example, as shown in FIG. 3, in addition to the appendage 8 having the shape as described above, and as shown in FIG. In addition to the appendage 8, an appendage 9 as shown in FIG. In addition, as long as the hub vortex can be reduced behind the wing propeller 4, any shape of additional material may be disposed on the support body 7.
- the appendage 8 can be arranged behind the wing propeller 4 without the rudder.
- the hub vortex accompanying the rotation of can be effectively reduced.
- the appendage 8 and the appendage 9 that reduce the hub vortex via the support body 7 extending from the hull 2 are provided behind the propeller (wing propeller) 4 that is not disposed behind the rudder. Therefore, the hub vortex can be reduced even in a propeller (wing propeller) 4 without a rudder behind.
- the appendage 8 has a circular cross section in a direction orthogonal to the central axis extending in the hull direction, and has a spindle shape whose diameter decreases toward the rear end side at the rear part. In this way, the hub vortex generated in the propeller (wing propeller) 4 can be more effectively reduced.
- the appendage 8 has a maximum diameter of 10% to 40% with respect to the diameter of the propeller (wing propeller) 4, and the length in the hull direction is equal to the diameter of the propeller (wing propeller) 4.
- it can be 40% or more and 70% or less, and in this way, the hub vortex generated in the propeller (wing propeller) 4 can be particularly effectively reduced.
- the propulsion efficiency of the propeller in the multi-shaft ship can be improved.
- the propulsion device for a multi-axis ship according to the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
Abstract
Description
2 船体
4 プロペラ(ウィングプロペラ)
7 支持体
8 付加物
9 付加物 1 Multi-axis ship (triaxial ship)
2
7
Claims (4)
- 後方に舵の配置されないプロペラの後方に、船体から延びる支持体を介してハブ渦を低減する付加物を配した多軸船の推進装置。 A propulsion device for a multi-shaft ship with an additive to reduce hub vortices via a support extending from the hull behind a propeller without a rudder.
- 前記付加物は、船体方向に延びる中心軸と直交する方向に円形の断面を有し、その後部には後端側に向かって径が小さくなる紡錘形の形状を有してなる、請求項1に記載の多軸船の推進装置。 The appendix has a circular cross section in a direction orthogonal to a central axis extending in a hull direction, and has a spindle-shaped shape with a diameter decreasing toward a rear end side at a rear part thereof. The multi-axis ship propulsion device described.
- 前記付加物は、最大径が前記プロペラの径に対して10%以上40%以下であり、船体方向の長さが前記プロペラの径に対して40%以上70%以下である、請求項2に記載の多軸船の推進装置。 The maximum size of the adduct is 10% or more and 40% or less with respect to the diameter of the propeller, and the length in the hull direction is 40% or more and 70% or less with respect to the diameter of the propeller. The multi-axis ship propulsion device described.
- 三軸船のウィングプロペラに対して適用した、請求項1~3のいずれか一項に記載の多軸船の推進装置。 The multi-axis propulsion device according to any one of claims 1 to 3, which is applied to a wing propeller of a triaxial ship.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680085000.3A CN109070981B (en) | 2016-04-28 | 2016-04-28 | Propulsion unit for multi-shaft ship |
KR1020187033553A KR102199864B1 (en) | 2016-04-28 | 2016-04-28 | Multi-axis propulsion device |
JP2018514051A JP6770064B2 (en) | 2016-04-28 | 2016-04-28 | Multi-axis ship propulsion device |
EP16900467.8A EP3450299B1 (en) | 2016-04-28 | 2016-04-28 | Propulsion device for multi-shaft ship |
PCT/JP2016/063353 WO2017187597A1 (en) | 2016-04-28 | 2016-04-28 | Propulsion device for multi-shaft ship |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2016/063353 WO2017187597A1 (en) | 2016-04-28 | 2016-04-28 | Propulsion device for multi-shaft ship |
Publications (1)
Publication Number | Publication Date |
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WO2017187597A1 true WO2017187597A1 (en) | 2017-11-02 |
Family
ID=60161366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/063353 WO2017187597A1 (en) | 2016-04-28 | 2016-04-28 | Propulsion device for multi-shaft ship |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3450299B1 (en) |
JP (1) | JP6770064B2 (en) |
KR (1) | KR102199864B1 (en) |
CN (1) | CN109070981B (en) |
WO (1) | WO2017187597A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013132937A (en) * | 2011-12-26 | 2013-07-08 | Mitsubishi Heavy Ind Ltd | Ship |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1549564A (en) * | 1923-06-12 | 1925-08-11 | Stephen E Slocum | Propeller mount |
FR1020502A (en) * | 1950-06-19 | 1953-02-06 | Forges Chantiers Mediterranee | Device for improving the propulsion efficiency of propellers, in particular for boats |
JP3004238B2 (en) | 1997-11-06 | 2000-01-31 | 川崎重工業株式会社 | Ship propulsion performance improvement device |
SE531482C2 (en) * | 2005-04-20 | 2009-04-21 | Rolls Royce Ab | Arrangements for propulsion and steering of a ship |
DK1871659T3 (en) * | 2005-04-20 | 2014-09-22 | Rolls Royce Ab | Progress and steering arrangement for a ship |
ATE523423T1 (en) * | 2008-09-12 | 2011-09-15 | Waertsilae Netherlands B V | DRIVE AND CONTROL ARRANGEMENT |
WO2011144239A1 (en) * | 2010-05-19 | 2011-11-24 | Wärtsilä Finland Oy | Rotational energy recovery appendage |
JP2013107522A (en) * | 2011-11-22 | 2013-06-06 | Nippon Yusen Kk | Rudder valve and rudder for ship |
KR101911013B1 (en) * | 2013-01-14 | 2018-10-24 | 현대중공업 주식회사 | twin skeg vessel for improving resistance and thrust |
JP6046652B2 (en) | 2014-03-04 | 2016-12-21 | 三井造船株式会社 | Ship |
-
2016
- 2016-04-28 KR KR1020187033553A patent/KR102199864B1/en active IP Right Grant
- 2016-04-28 EP EP16900467.8A patent/EP3450299B1/en active Active
- 2016-04-28 JP JP2018514051A patent/JP6770064B2/en active Active
- 2016-04-28 CN CN201680085000.3A patent/CN109070981B/en active Active
- 2016-04-28 WO PCT/JP2016/063353 patent/WO2017187597A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013132937A (en) * | 2011-12-26 | 2013-07-08 | Mitsubishi Heavy Ind Ltd | Ship |
Also Published As
Publication number | Publication date |
---|---|
CN109070981A (en) | 2018-12-21 |
EP3450299A4 (en) | 2019-11-06 |
EP3450299B1 (en) | 2021-08-18 |
KR20190003586A (en) | 2019-01-09 |
JP6770064B2 (en) | 2020-10-14 |
KR102199864B1 (en) | 2021-01-11 |
JPWO2017187597A1 (en) | 2019-03-07 |
CN109070981B (en) | 2021-07-13 |
EP3450299A1 (en) | 2019-03-06 |
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