[go: up one dir, main page]

CN1221379A - 船只螺旋桨桨叶 - Google Patents

船只螺旋桨桨叶 Download PDF

Info

Publication number
CN1221379A
CN1221379A CN97195287A CN97195287A CN1221379A CN 1221379 A CN1221379 A CN 1221379A CN 97195287 A CN97195287 A CN 97195287A CN 97195287 A CN97195287 A CN 97195287A CN 1221379 A CN1221379 A CN 1221379A
Authority
CN
China
Prior art keywords
blade
propeller blade
ribs
reducing
propeller
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.)
Pending
Application number
CN97195287A
Other languages
English (en)
Inventor
D·于尔根斯
C·蒂默
H·G·埃鲁斯
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.)
Blohm and Voss International GmbH
Original Assignee
Blohm and Voss International GmbH
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 Blohm and Voss International GmbH filed Critical Blohm and Voss International GmbH
Publication of CN1221379A publication Critical patent/CN1221379A/zh
Pending legal-status Critical Current

Links

Images

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
    • B63H1/26—Blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16—Blades
    • B64C11/18—Aerodynamic features

Landscapes

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

Abstract

本发明涉及一种船只螺旋桨桨叶,它在外半径区内具有减少引发涡流的装置,其中减少引发涡流的装置是由许多彼此间隔并排设置的且近似平行于桨叶母线的肋片构成的,所述肋片从桨叶端起径向向外地自由伸出。

Description

船只螺旋桨桨叶
本发明涉及一种具有权利要求1前序部分所述特征的船只螺旋桨桨叶。
由在桨叶的吸入侧或加压侧的不同压力比造成了外桨叶端的环流并同时引发了所谓的“尖端涡流”。螺旋桨所受负载越高，则加压侧和吸入侧之间的压力梯度越大，进而所引发的涡流的能量越高。根据负载量的情况，由涡流效应引起的能量损耗高达15％。迄今所知的具有权利要求1前序部分所述特征的装置以叶端片工作原理为基础。外桨叶端具有一个圆片或叶片段，它垂直于叶片面地沿轴向分布且在吸入侧或加压侧方向上突出。这样一来就可以减弱压力平衡或减少叶片端处的环流并进而降低涡流损耗。这个工作方式的变型方案就是所谓的“尖端尾翼式螺旋桨”，其中高达90度以上地使叶片端轴向隆起并由此获得了叶端片效应。这种已知装置的一个主要缺陷就是不成比例的高昂加工成本。另外，由于在附加表面上的摩擦增大了阻力矩，所以总收效较低。
本发明的任务是避免上述不足并据此改进如权利要求1前序部分所述的装置，从而可以技术成本较低地获得明显的收效。
根据本发明，如此完成上述任务，即减少引发涡流的装置是由许多彼此间隔并排设置的且近似平行于桨叶母线的肋片构成的，所述肋片从桨叶端起径向向外地自由伸出。
在附图中，结合几张草图示出了本发明的装置，其中省去了结构细节。
图1是带肋片的螺旋桨桨叶的截面图。
图2是带肋片的螺旋桨桨叶的主视图。
图3是带肋片和缝的螺旋桨桨叶的主视图。
可以通过本发明的装置降低涡流损耗。螺旋桨的螺旋面是由一条绕一个固定轴转动的且沿此轴以不变速率步进的直线构成的。这样产生的直线被标为母线1。通过近似平行于母线1设置的肋片R1-R4明显降低了自由涡流的损耗能量。涡流能量与其半径三次方近似成比例。这是根据待环流边的几何形状产生的。由于螺旋桨桨叶2的形状在外端被分成许多个肋片R1-R4，所以在自由涡流位置上与肋片数目和肋片的缝间距对应地引发了许多小涡流。例如，由单个半径为1.0(I3=1)的涡流发起地，在四个半径为0.25(4*0.253=0.0625)的分涡流中的损耗能量被减少到6％-7％。肋片还通过根据桨叶轮廓和母线1来确定肋片R1-R4方向的方式产生了浮力。同时，可以通过缝3有利地影响临界层的展开和压力分布。可以技术简单地通过铣制设计得较厚的桨叶区的方式或通过套装预制肋片罩的方式加工出肋片。

Claims (2)

1．一种船只螺旋桨桨叶，它在外半径区内具有减少引发涡流的装置，其特征在于，减少引发涡流的装置是由许多彼此间隔并排设置的且近似平行于桨叶(2)母线(1)的肋片(R1-R4)构成的，所述肋片从桨叶端起径向向外地自由伸出。
2．如权利要求1所述的桨叶，其特征在于，所述肋片(R1-R4)通过一条或多条缝(3)沿切向被分开。
CN97195287A 1996-04-15 1997-04-10 船只螺旋桨桨叶 Pending CN1221379A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19614851 1996-04-15
DE19614851.0 1996-04-15

Publications (1)

Publication Number Publication Date
CN1221379A true CN1221379A (zh) 1999-06-30

Family

ID=7791326

Family Applications (1)

Application Number Title Priority Date Filing Date
CN97195287A Pending CN1221379A (zh) 1996-04-15 1997-04-10 船只螺旋桨桨叶

Country Status (6)

Country Link
EP (1) EP0894066A1 (zh)
JP (1) JP2000508271A (zh)
KR (1) KR20000005416A (zh)
CN (1) CN1221379A (zh)
DE (1) DE19780302D2 (zh)
WO (1) WO1997038897A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100406347C (zh) * 2006-01-23 2008-07-30 李如忠 船用节能螺旋桨
CN105438424A (zh) * 2015-11-23 2016-03-30 镇江同舟螺旋桨有限公司 一种稍部折翼的节能船用螺旋桨

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR990100151A (el) * 1999-05-06 2001-01-31 Διανοικτης συστροφης στροβιλων
US7049324B1 (en) 1999-11-15 2006-05-23 Ashis Kumar Saha Triazoles as farnesyl transferase inhibitors
KR101225177B1 (ko) 2010-07-16 2013-01-22 삼성중공업 주식회사 프로펠러 및 이를 포함하는 선박

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB196410A (en) * 1922-02-01 1923-04-26 William Robert Douglas Shaw Improvements in wings for aerial machines
ES2035127T3 (es) * 1987-03-13 1993-04-16 Gunter Spranger Dispositivo perfilado en forma de aleta, que actua sobre un fluido liquido o gaseoso que fluye a su alrededor y que presenta aletas perfiladas en forma de tira para la mejora de la eficacia.
DE4202745C2 (de) * 1991-09-04 1995-04-13 Blohm Voss Ag Tragflügel, insbesondere Stabilisatorflosse für Schiffe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100406347C (zh) * 2006-01-23 2008-07-30 李如忠 船用节能螺旋桨
CN105438424A (zh) * 2015-11-23 2016-03-30 镇江同舟螺旋桨有限公司 一种稍部折翼的节能船用螺旋桨
CN105438424B (zh) * 2015-11-23 2017-11-21 镇江同舟螺旋桨有限公司 一种稍部折翼的节能船用螺旋桨

Also Published As

Publication number Publication date
KR20000005416A (ko) 2000-01-25
WO1997038897A1 (de) 1997-10-23
EP0894066A1 (de) 1999-02-03
JP2000508271A (ja) 2000-07-04
DE19780302D2 (de) 1999-04-29

Similar Documents

Publication Publication Date Title
EP0458864B1 (en) Centrifugal fan with variably cambered blades
US5393197A (en) Propulsive thrust ring system
US8167548B2 (en) Steam turbine
US4946348A (en) Centrifugal fan with airfoil vanes in annular volute envelope
US4714407A (en) Aerofoil section members for turbine engines
US7726935B2 (en) Wind turbine rotor projection
EP0385913A1 (en) Airfoiled blade
WO2005040559A1 (en) High lift rotor or stator blades with multiple adjacent airfoils cross-section
WO2002059464A1 (en) Fluid machinery
JP2009074447A (ja) 垂直軸型風車
EP3431750B1 (en) Method for determining arrangement position of vortex generator on wind turbine blade, method for producing wind turbine blade assembly, and wind turbine blade assembly
EP3587799B1 (en) Aerodynamic structure
US12503218B2 (en) Ultra-wide-chord propeller including varying blade angle
US2609055A (en) Reversible propeller blade
US7789629B2 (en) Non-fouling kinetic hydro power system axial-flow blade tip treatment
GB2068472A (en) Axial paddle-wheel fan
BRPI1105490B1 (pt) Propulsor para uma bomba centrífuga
CN1221379A (zh) 船只螺旋桨桨叶
JP7504481B2 (ja) 改良型ダクトを備えるファン
US7413410B2 (en) Ceiling fan blade
JP3516530B2 (ja) 低比速度インペラ
US3291381A (en) High energy axial flow apparatus
EP0306434B1 (en) Airfoiled blade
WO2014072692A2 (en) Continuous band propeller
JPH04212695A (ja) スクリュープロペラ

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication