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EP2902312A1 - Schiffsschrauben - Google Patents

Schiffsschrauben Download PDF

Info

Publication number
EP2902312A1
EP2902312A1 EP14198157.1A EP14198157A EP2902312A1 EP 2902312 A1 EP2902312 A1 EP 2902312A1 EP 14198157 A EP14198157 A EP 14198157A EP 2902312 A1 EP2902312 A1 EP 2902312A1
Authority
EP
European Patent Office
Prior art keywords
propeller
ring
blade
end plate
section
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.)
Withdrawn
Application number
EP14198157.1A
Other languages
English (en)
French (fr)
Inventor
Mark Chapple
Carl Morley
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.)
RingProp Marine Ltd
Original Assignee
RingProp Marine 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
Priority claimed from AU2013904926A external-priority patent/AU2013904926A0/en
Application filed by RingProp Marine Ltd filed Critical RingProp Marine Ltd
Publication of EP2902312A1 publication Critical patent/EP2902312A1/de
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B63H1/16—Propellers having a shrouding ring attached to blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades

Definitions

  • Embodiments generally relate to marine propellers and relates particularly to propellers suitable for use with marine craft of all types. Some embodiments are particularly directed towards shrouded or ringed propellers in which the outer tips of propeller blades are connected by a ring or shroud of substantially circular configuration. However, Embodiments are also applicable to propellers having blade tip end plates or wing tips wherein the propeller blade tips are provided with a ring segment, with the ring being discontinuous between the end plates or tips.
  • the flow contraction angle is caused by the fluid being accelerated through the propeller disc. This is true for any screw propeller of any geometry, with or without a shroud or ring. It has been found in testing that propellers of higher loading, or lower pitch/diameter ratio, will have larger contraction angles. More generally, however, it can be said that different propeller disc loadings will require different propeller geometries, and this then results in different contraction angles.
  • accelerative ducts can have the effect of increasing propeller efficiency by providing additional forward thrust with no addition of torque, in some operating conditions their use may lower the pressure through the propeller disc by too great a magnitude and thus cause a simultaneous reduction in thrust and efficiency, particularly if the propeller is operated in a cavitating regime.
  • a decelerative ring may suppress cavitation and also significantly increase the thrust produced by the blades such that any drag caused directly by the ring is at least negated.
  • the angle may vary around the ring circumference so as to optimise the structure for blade loading and flow.
  • the angle of the ring segments adjacent a blade tip may be different to the angle between blades.
  • the section angle will be between 1° and 15°, more particularly between 2° and 10°, and more specifically between 4° and 6°.
  • camber ratios will range from 1/40 to 3/40, although other ratios may also be adopted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP14198157.1A 2013-12-17 2014-12-16 Schiffsschrauben Withdrawn EP2902312A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2013904926A AU2013904926A0 (en) 2013-12-17 Marine propellers

Publications (1)

Publication Number Publication Date
EP2902312A1 true EP2902312A1 (de) 2015-08-05

Family

ID=52302053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14198157.1A Withdrawn EP2902312A1 (de) 2013-12-17 2014-12-16 Schiffsschrauben

Country Status (3)

Country Link
US (1) US20150203181A1 (de)
EP (1) EP2902312A1 (de)
AU (1) AU2014277656A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105235841A (zh) * 2015-10-25 2016-01-13 宁波市鄞州发辉机械科技有限公司 一种高机动性潜水器

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109747812A (zh) * 2018-12-11 2019-05-14 惠阳航空螺旋桨有限责任公司 一种翼尖小翼螺旋桨
DE102019201501A1 (de) * 2019-02-06 2020-08-06 Skf Marine Gmbh Aktive Stabilisierungsvorrichtung sowie Verfahren
SE544385C2 (en) * 2019-09-23 2022-05-03 Volvo Penta Corp Propeller combination for a marine vessel
CN114476000B (zh) * 2022-02-23 2023-06-30 深圳市苇渡智能科技有限公司 基于提升使用性能的桨叶结构及其应用方法、螺旋桨
CN114476001B (zh) * 2022-02-23 2023-05-05 深圳市苇渡智能科技有限公司 层流翼型桨叶结构及其应用方法、螺旋桨
CN114750913A (zh) * 2022-05-20 2022-07-15 深圳市苇渡智能科技有限公司 减消空化现象的螺旋桨结构
CN115258114B (zh) * 2022-09-27 2022-12-09 青岛卓启建新机械有限公司 一种可变导管船用动力推进装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE899180C (de) * 1942-10-21 1953-12-10 Gustav Woehrn Schiffsschraube mit Leitflueglen
FR1388961A (fr) * 1963-12-31 1965-02-12 Perfectionnements aux hélices, notamment pour la propulsion des bateaux de plaisance
GB1325395A (en) * 1971-11-16 1973-08-01 Townshend R C Marine ring propellers
GB2029515A (en) * 1978-08-30 1980-03-19 Propeller Design Ltd Marine ring propeller
FR2468499A1 (fr) * 1979-11-02 1981-05-08 Espanoles Astilleros Systeme propulsif pour un navire a helice, et navire ainsi equipe
US6102661A (en) * 1984-12-06 2000-08-15 Spi Ltd Propeller with annular connecting element interconnecting tips of blades

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1518501A (en) * 1923-07-24 1924-12-09 Gill Propeller Company Ltd Screw propeller or the like
US2426742A (en) * 1943-11-20 1947-09-02 Felix W Pawlowski Screw propeller
US2438867A (en) * 1945-06-01 1948-03-30 United Aircraft Corp Method of assembling shrouds on impellers
NL8420304A (nl) * 1983-12-09 1985-11-01 Church Leslie Graham Ringschroef.
ATE144476T1 (de) * 1990-12-14 1996-11-15 Stealth Propulsion Pty Ltd Propeller mit an den flügeln befestigtem mantelring

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE899180C (de) * 1942-10-21 1953-12-10 Gustav Woehrn Schiffsschraube mit Leitflueglen
FR1388961A (fr) * 1963-12-31 1965-02-12 Perfectionnements aux hélices, notamment pour la propulsion des bateaux de plaisance
GB1325395A (en) * 1971-11-16 1973-08-01 Townshend R C Marine ring propellers
GB2029515A (en) * 1978-08-30 1980-03-19 Propeller Design Ltd Marine ring propeller
FR2468499A1 (fr) * 1979-11-02 1981-05-08 Espanoles Astilleros Systeme propulsif pour un navire a helice, et navire ainsi equipe
US6102661A (en) * 1984-12-06 2000-08-15 Spi Ltd Propeller with annular connecting element interconnecting tips of blades

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105235841A (zh) * 2015-10-25 2016-01-13 宁波市鄞州发辉机械科技有限公司 一种高机动性潜水器
CN105235841B (zh) * 2015-10-25 2017-06-20 宁波市鄞州发辉机械科技有限公司 一种高机动性潜水器

Also Published As

Publication number Publication date
US20150203181A1 (en) 2015-07-23
AU2014277656A1 (en) 2015-07-02

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Effective date: 20160206