CN101898631A - Rudder bulb type thrust fin-based rudder device - Google Patents
Rudder bulb type thrust fin-based rudder device Download PDFInfo
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- CN101898631A CN101898631A CN 201010235336 CN201010235336A CN101898631A CN 101898631 A CN101898631 A CN 101898631A CN 201010235336 CN201010235336 CN 201010235336 CN 201010235336 A CN201010235336 A CN 201010235336A CN 101898631 A CN101898631 A CN 101898631A
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Abstract
The invention aims to provide a rudder bulb type thrust fin-based rudder device, which comprises a rudder, a propeller, a rudder bulb and thrust fins. The rudder bulb is arranged on the front part of the rudder; the center of the rudder bulb is aligned to an axial lead of the propeller, and two thrust fins are arranged on the left side and right side of the rudder bulb. The rudder bulb type thrust fin-based rudder device has the advantages of reasonable structure, simple and convenient installation, good energy-saving effect, low noise, low cost, and easy modification of the conventional old ships.
Description
Technical field
What the present invention relates to is the rudder for ship device of a kind of propulsion of ship and energy saving technology apparatus field.
Background technology
Surging fuel cost, the fuel demand of sustainable growth and International Maritime Organization (IMO) (IMO) have clearly proposed the implementation schedule of boats and ships efficiency design index (EEDI) and boats and ships efficiency operation index (EEOI), make the ship energy saving problem seem particularly urgent.The energy-saving and emission-reduction problem has become the problem that countries in the world government, business circles and the departments of science and technology pay close attention to.
The main conservation measures of boats and ships has: carry out the research of outstanding ship type, development high efficiency propeller and the energy-conservation additional device of exploitation hydrodynamic force etc.Generally can only use at the beginning of ship design owing to optimize hull lines and preferred power plant measure,, have significant limitation in case fixing will being difficult to changes.And development of new hydrodynamic force energy saver has greater flexibility, is easy to existing obsolete vessel is transformed, and simple installation, cost are low, and energy-conservation and reduce and effect is preferably all being arranged aspect the noise, application prospect is very wide.
Traditional rudder additionaling thrust manch is a kind of energy saver that reclaims the propeller race energy, and the rotating energy that it is installed in the both sides absorption propeller race of rudder plays the energy-conservation effect of boosting.According to the experimental data of Japan and relevant real ship result of use, the boosting efficient of traditional rudder additionaling thrust manch can reach about 3%, still has the space of rising.
Summary of the invention
The object of the present invention is to provide boosting efficient height, good energy-conserving effect, noise is low, cost is low rudder for ship device based on rudder ball formula thrust fin.
The object of the present invention is achieved like this:
The present invention is based on the rudder for ship device of rudder ball formula thrust fin, comprise rudder for ship and screw propeller, it is characterized in that: also comprise rudder ball and thrust fin, the rudder ball is installed in the center of the front portion of rudder for ship and rudder ball over against screw propeller axle center line, and two thrust fins are installed in the left side and the right side of rudder ball.
The rudder for ship device that the present invention is based on rudder ball formula thrust fin can also comprise:
Described rudder ball is the gyro-rotor of elliposoidal, and the stagger angle of two thrust fins is opposite.
Advantage of the present invention is: the present invention is rational in infrastructure, simple installation, good energy-conserving effect, low noise, cost are low, be easy to existing obsolete vessel is transformed.
Description of drawings
Fig. 1 is first graphics of the present invention;
Fig. 2 is second graphics of the present invention;
Fig. 3 is a lateral plan of the present invention;
Fig. 4 is a scheme drawing of the present invention;
Fig. 5 is first birds-eye view of the present invention;
Fig. 6 is the present invention second birds-eye view.
The specific embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～6, the present invention is based on the rudder for ship device of rudder ball formula thrust fin, comprise rudder for ship 2 and screw propeller 1, it is characterized in that: also comprise rudder ball 3 and thrust fin 4, rudder ball 3 is installed in the center of the front portion of rudder for ship 2 and rudder ball 3 over against screw propeller 1 axial line, and two thrust fins 4 are installed in the left side and the right side of rudder ball 3.Described rudder ball 3 is the gyro-rotor of elliposoidal, and the stagger angle of two thrust fins 4 is opposite.
Main geometric parameters rudder ball 3 diameters of rudder ball 3 are main relevant with screw propeller 1 diameter or hub diameter.It is more suitable to it is generally acknowledged that rudder ball 3 diameters and screw propeller 1 diameter ratio are got the 0.2-0.216 scope, and rudder ball 3 diameters are greater than hub diameter simultaneously.The key role parameter of rudder ball 3 is and the distance dependent of its screw propeller 1 or propeller hub, and existing result of study shows that this distance is near more good more, and distance limit is mainly for technological consideration, so that the dismounting of screw propeller 1 is advisable.
The blade section type of thrust fin 4 generally adopts NACA aerofoil profile or Clark-Y aerofoil profile.Thrust fin 4 exhibitions are long big more, and aspect ratio is big more, and lift is big more, but its friction drag is also big more, so thrust fin 4 exhibition length should be got screw propeller 1 tail flow field radius size for best.See that screw propeller 1 is a clickwise after from oar, then the circumferential induction velocity of screw propeller 1 makes progress in the left side of rudder, and the right side is downward, so the stagger angle of thrust fin 4 also is opposite, as shown in Figure 4, thereby increases thrust significantly.The stagger angle of thrust fin 4 is big more, and then its effective angle of attack is also big more, and its lift and resistance are in hour also increase thereupon of its effective angle of attack, but both are in axial making a concerted effort, and promptly boosting power is not to increase thereupon, and there is optimum value in it, change with screw propeller 1 advance coefficient simultaneously, generally between the 4-7 degree.Thrust fin 4 vertical positions place from the oar axis the most nearby, its boosting efficient maximum.Because the thrust of fin is directly proportional with the area on its plane, simultaneously nearer from the hub whirlpool, its circumferential induction velocity maximum.But screw propeller 1 is operated in stern complexity, the uneven wake with regard to actual, during device thrust fin 4, and should be a little more than propeller for vessels 1 shaft centre line position.In addition, the concrete parameter of rudder ball and thrust fin should be selected as one sees fit according to the type and the size of employed screw propeller and rudder.
According to the cantilever theory,, then can apply bigger stress in the junction of rudder ball 3 and thrust fin 4 if two thrust fins 4 separated from one another are installed on the rudder ball 3, thereby, reinforce around needing in the junction, simultaneously, also there is identical problem in rudder ball 3 with the junction of rudder for ship 2.In order to address the above problem, described rudder ball formula thrust fin device to be manufactured incorporate structure, thereby simplified manufacturing process and increased intensity.
The hydrodynamic force energy saver that this kind reclaims the propeller for vessels wake energy combines traditional rudder ball-joint can device and the advantage of traditional rudder additionaling thrust manch energy saver.Rudder ball 3 promptly can reduce the meiobar at screw propeller 1 rear center position, reduces the disorderly current in this district, thereby reduces the degradation of energy of this part; Simultaneously, the thrust fin 4 of device on rudder ball 3 can reclaim screw propeller 1 back rotating energy again and play the energy-conservation effect of boosting.
At present, use computational fluid dynamics (CFD) software FLUENT and carried out the flow field simulation analysis, employing is carried out the mathematical forecast of hydrodynamic performance based on the RANS method in viscosity flow field to screw propeller 1 and rudder ball formula thrust fin, and the energy saving of rudder ball formula thrust fin is installed in checking.FLUENT is at present at fluid, and relevant industrial aspect function such as transfer of heat and chemical reaction is the most comprehensive, one of the widest, the most popular CFD software of applicability.And the RANS method also is the high precision that is applicable to screw propeller and rudder mutual interference hydrodynamic performance mutually, stable, theoretical calculation method efficiently.Calculating shows that the maximum boosting efficient of rudder ball formula thrust fin device can reach about 6%, is a kind of very outstanding boats and ships hydrodynamic force energy saver.
Claims (2)
1. based on the rudder for ship device of rudder ball formula thrust fin, comprise rudder for ship and screw propeller, it is characterized in that: also comprise rudder ball and thrust fin, the rudder ball is installed in the center of the front portion of rudder for ship and rudder ball over against screw propeller axle center line, and two thrust fins are installed in the left side and the right side of rudder ball.
2. the rudder for ship device based on rudder ball formula thrust fin according to claim 1 is characterized in that: described rudder ball is the gyro-rotor of elliposoidal, and the stagger angle of two thrust fins is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102353368A CN101898631B (en) | 2010-07-23 | 2010-07-23 | Rudder bulb type thrust fin-based rudder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102353368A CN101898631B (en) | 2010-07-23 | 2010-07-23 | Rudder bulb type thrust fin-based rudder device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101898631A true CN101898631A (en) | 2010-12-01 |
| CN101898631B CN101898631B (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102353368A Expired - Fee Related CN101898631B (en) | 2010-07-23 | 2010-07-23 | Rudder bulb type thrust fin-based rudder device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104443333A (en) * | 2014-11-28 | 2015-03-25 | 中国船舶重工集团公司第七○二研究所 | Rudder ball type contra-rotating propeller |
| CN105329432A (en) * | 2015-11-12 | 2016-02-17 | 无锡德林船舶设备有限公司 | Energy-saving rudder |
| CN105329431A (en) * | 2015-11-12 | 2016-02-17 | 无锡德林船舶设备有限公司 | Rudder with thrust fins |
| CN105644748A (en) * | 2016-01-06 | 2016-06-08 | 浙江海洋学院 | Propeller hub cap of propeller |
| CN105644749A (en) * | 2016-01-06 | 2016-06-08 | 浙江海洋学院 | Ship propulsion mechanism |
| CN105667747A (en) * | 2016-01-06 | 2016-06-15 | 浙江海洋学院 | High-efficiency propeller |
| CN107539445A (en) * | 2016-01-05 | 2018-01-05 | 现代重工业株式会社 | Ship rudder |
| CN107676214A (en) * | 2017-09-08 | 2018-02-09 | 哈尔滨工程大学 | Rudder ball turbine generator after a kind of marine propeller |
| CN108069008A (en) * | 2016-11-10 | 2018-05-25 | 浙江海洋大学 | A kind of new trawler energy-saving rudder ball |
| CN110682752A (en) * | 2019-10-25 | 2020-01-14 | 哈尔滨工程大学 | Cycloid type amphibious propeller |
| CN111516848A (en) * | 2020-05-13 | 2020-08-11 | 沅江市国伏船舶制造有限公司 | Energy-saving stabilization system for rudder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0527270A1 (en) * | 1991-08-08 | 1993-02-17 | Hitachi Zosen Corporation | Ship rudder |
| JPH11139395A (en) * | 1997-11-06 | 1999-05-25 | Kawasaki Heavy Ind Ltd | Propelling performance improving device for vessel |
| JP2004299420A (en) * | 2003-03-28 | 2004-10-28 | Mitsui Eng & Shipbuild Co Ltd | Rudder with fin and vessel |
| CN101559828A (en) * | 2008-04-18 | 2009-10-21 | 三菱重工业株式会社 | Finned rudder |
-
2010
- 2010-07-23 CN CN2010102353368A patent/CN101898631B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0527270A1 (en) * | 1991-08-08 | 1993-02-17 | Hitachi Zosen Corporation | Ship rudder |
| JPH11139395A (en) * | 1997-11-06 | 1999-05-25 | Kawasaki Heavy Ind Ltd | Propelling performance improving device for vessel |
| JP2004299420A (en) * | 2003-03-28 | 2004-10-28 | Mitsui Eng & Shipbuild Co Ltd | Rudder with fin and vessel |
| JP3944462B2 (en) * | 2003-03-28 | 2007-07-11 | 三井造船株式会社 | Rudder with fins, ship |
| CN101559828A (en) * | 2008-04-18 | 2009-10-21 | 三菱重工业株式会社 | Finned rudder |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104443333A (en) * | 2014-11-28 | 2015-03-25 | 中国船舶重工集团公司第七○二研究所 | Rudder ball type contra-rotating propeller |
| CN105329432A (en) * | 2015-11-12 | 2016-02-17 | 无锡德林船舶设备有限公司 | Energy-saving rudder |
| CN105329431A (en) * | 2015-11-12 | 2016-02-17 | 无锡德林船舶设备有限公司 | Rudder with thrust fins |
| CN107539445A (en) * | 2016-01-05 | 2018-01-05 | 现代重工业株式会社 | Ship rudder |
| CN105644748A (en) * | 2016-01-06 | 2016-06-08 | 浙江海洋学院 | Propeller hub cap of propeller |
| CN105667747A (en) * | 2016-01-06 | 2016-06-15 | 浙江海洋学院 | High-efficiency propeller |
| CN105644749A (en) * | 2016-01-06 | 2016-06-08 | 浙江海洋学院 | Ship propulsion mechanism |
| CN108069008A (en) * | 2016-11-10 | 2018-05-25 | 浙江海洋大学 | A kind of new trawler energy-saving rudder ball |
| CN108069008B (en) * | 2016-11-10 | 2020-05-05 | 浙江海洋大学 | Novel energy-saving rudder ball of trawler |
| CN107676214A (en) * | 2017-09-08 | 2018-02-09 | 哈尔滨工程大学 | Rudder ball turbine generator after a kind of marine propeller |
| CN110682752A (en) * | 2019-10-25 | 2020-01-14 | 哈尔滨工程大学 | Cycloid type amphibious propeller |
| CN110682752B (en) * | 2019-10-25 | 2023-01-03 | 哈尔滨工程大学 | Cycloid type amphibious propeller |
| CN111516848A (en) * | 2020-05-13 | 2020-08-11 | 沅江市国伏船舶制造有限公司 | Energy-saving stabilization system for rudder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101898631B (en) | 2012-10-31 |
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