CN106828847A - The vertical fair water fin of single-blade ship - Google Patents
The vertical fair water fin of single-blade ship Download PDFInfo
- Publication number
- CN106828847A CN106828847A CN201710053778.2A CN201710053778A CN106828847A CN 106828847 A CN106828847 A CN 106828847A CN 201710053778 A CN201710053778 A CN 201710053778A CN 106828847 A CN106828847 A CN 106828847A
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- CN
- China
- Prior art keywords
- fair water
- water fin
- ship
- vertical
- 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.)
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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
- B63H1/16—Propellers having a shrouding ring attached to blades
Abstract
The present invention provides a kind of vertical fair water fin of single-blade ship, and the top and bottom of fair water fin are connected with hull, and fair water fin is located at ship stern oar front, and the interior string of a musical instrument of the aerofoil profile of the fair water fin and the angle of ship course are 5 ° 30 °.Design structure of the present invention is simple, and cost is relatively low, and can effectively reclaim the energy in ship wake and reduce the exciting force of propeller, realizes the unification of security and economy.
Description
Technical field
The present invention relates to a kind of fair water fin, more particularly to a kind of vertical fair water fin of single-blade ship, belong to Ship Propeling energy-conservation attached
Body apparatus field.
Background technology
With energy-saving and emission-reduction, the proposition of operation of ship greenization requirement is realized, various conservation measures obtain the weight of shipowners
Depending on.In the 58th meeting of particularly MEPC issue the 62nd meeting of EEDI computing formula and the MEPC of in July, 2011, formally pass through
《MARPOL73/78 pacts》The amendment of supplemental provisions VI, it is determined that two ship efficiency criterions of EEDI and SEEMP.Two criterions exist
On January 1st, 2013 enters into force, and is enforced from 2015, and the exceeded new design ship of EEDI indexes will not pass through classification society
Or the examination ＆ verification of IMO, the exceeded operation ship of EEDI indexes may be forced to scrap or cannot be introduced into International Shipping Market.Compare
Energy-conservation new herbicide and new and effective propeller, Energy saving appendage technology are a kind of with low cost, effect is significant, the energy-conservation of safe ready
Selection.
Common Energy saving appendage device can be divided into before oar Energy saving appendage after Energy saving appendage and oar according to the difference of installation site.Oar
Preceding Energy saving appendage mainly includes：It is fair water fin (horizontal type) before compensating duct, freewheel, super mozzle, oar, counter-rotating rotors, asymmetric
Stern etc..Energy saving appendage mainly includes after oar：Rudder additionaling thrust manch, distortion rudder, rudder ball, rearmounted grim impellers etc..In the present invention
Vertical fair water fin is applied to single-blade ship, belongs to the attached body device of energy-conservation before oar.The attached body device of the novel energy-conserving combines asymmetric
The advantage of fair water fin before stern and oar, can reclaim bilge whirlpool rotational energy reduce airscrew thrust that bilge whirlpool and oblique flow cause and
Torque fluctuation, so that reduce the exciting force of propeller, meanwhile, one can be produced opposite with propeller direction of rotation before oar
Preswirl, improves the propulsive efficiency of propeller.
The content of the invention
The invention aims to provide a kind of vertical fair water fin of single-blade ship, design structure is simple, and cost is relatively low, and
The energy in ship wake can effectively be reclaimed and reduce the exciting force of propeller, realize the system of security and economy
One.
The object of the present invention is achieved like this：The top and bottom of fair water fin are connected with hull, and fair water fin is located at
Ship stern oar front, the interior string of a musical instrument of the aerofoil profile of the fair water fin and the angle of ship course are 5 ° -30 °.
Present invention additionally comprises such some architectural features：
1. the length of the interior string of a musical instrument described in is 0.3-0.5 times of ship stern oar diameter.
2. the aerofoil profile of fair water fin is NACA0020 aerofoil profiles or airfoil type or shuttle-type.
3. the interior string of a musical instrument of the aerofoil profile of fair water fin described in and the angle of ship course are 10 °.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is the wake energy after reclaiming hull oar, and
Improve ship stern flow fields, reduce a kind of energy saver of propeller exciting force.The present invention can reclaim the energy in tail flow field, subtract
The exciting force of minor spiral oar, and then improve the hydrodynamic performance of propeller.This technology increased single-blade ship rear screw shaft hydrodynamic(al)
The mechanism of power performance is：Acted on by the angle of attack of the vertical fair water fin and current, one and propeller are produced before propeller
Opposite preswirl is turned to, this reverse preswirl can reduce the loss of screw current rotation, so as to improve propeller
Propulsive efficiency.Although the generation of preswirl requires the expenditure of energy, the vertical fair water fin helps to improve ship stern flow fields, by nothing
Radial direction wake is converted into the axial wake that propeller can directly absorb, and the Wake Field alleviated propeller rotation and bring
Non-uniform phenomenon, so as to improve the hydrodynamic performance of propeller, reduces the possibility that propeller-excited vibration occurs.The present invention has simultaneously
Simple, easy for installation, low cost the advantage of processing, meets the requirement of China's green ship development, is that one kind has tremendous expansion
Potentiality and the attached body device of application market novel energy-conserving.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is of the invention to stream schematic diagram of mechanism；
Fig. 3 a to Fig. 3 c are the three-view diagrams of fair water fin of the invention；
Fig. 4 is NACA0020 section profiles figure of the invention；
Fig. 5 is airfoil type section profile figure of the invention；
Fig. 6 is shuttle-type section profile of the invention.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
With reference to Fig. 1 to Fig. 6, before fair water fin of the invention is located at ship stern oar, upper and lower ends are both connected to hull, its section wing
Type is at a certain angle with ship course, and specifically interior string of a musical instrument b and ship course angle are 5 ° to 30 °.Section aerofoil profile knot
Structure produces one vortex opposite with propeller direction of rotation in the presence of the angle of attack in the preceding flow field of propeller, reduces spiral
The whirlpool that oar rotating band comes separates the energy loss for causing.Meanwhile, ship stern radial direction wake can be converted to propeller by the structure can
With the axial wake for directly absorbing, make axial wake more uniform, reduce the exciting force of propeller.
Further, the section aerofoil profile of the fair water fin can have various, the symmetric and asymmetric wing of the string of a musical instrument along section
Type structure can play same effect.
Further, chord length b is 0.3-0.5 times of airscrew diameter in aerofoil profile.
Present invention aim at providing a kind of novel guide Energy saving appendage device, this new Energy saving appendage device can be with
One preswirl is produced in front of oar card, is then reclaimed by the anti-oar effect of propeller.The fair water fin improves ship simultaneously
Oceangoing ship tail flow field, reduces the pulsation of airscrew thrust and torque that bilge whirlpool and oblique flow are caused, makes the axial Wake Field in front of oar card
It is more uniform, and then reduce the exciting force of propeller.Its (4. institute in Fig. 2 as shown in Fig. 2 turn of the bilge separation eddy around stream mechanism
Show region) portion of energy absorbed by vertical fair water fin, while changing the direction of wake so that flow field is more uniformly distributed, increase
5. the propulsive performance of propeller, be the trailing vortex area of aerofoil profile in figure.
Section aerofoil profile in the present invention can be airfoil type, NACA0020 aerofoil profiles, shuttle-type, be likely to be breached similar effect,
Section aerofoil profile angle of attack magnitude range is between 5 ° to 30 °.For newly-designed ship, the optimum energy-saving effect institute of this Energy saving appendage
Corresponding section aerofoil profile needs to determine with ship model experimental tank model test by numerical simulation technology with installation form.It is of the invention
Fair water fin is applied to most of inlands or transport by sea single-blade ship, with obvious technological progress and economical characters.
Claims (5)
1. the vertical fair water fin of single-blade ship, it is characterised in that：The top and bottom of fair water fin are connected with hull, and fair water fin is located at
Ship stern oar front, the interior string of a musical instrument of the aerofoil profile of the fair water fin and the angle of ship course are 5 ° -30 °.
2. the vertical fair water fin of single-blade ship according to claim 1, it is characterised in that：The length of the interior string of a musical instrument is ship stern oar
0.3-0.5 times of diameter.
3. the vertical fair water fin of single-blade ship according to claim 1 and 2, it is characterised in that：The aerofoil profile of fair water fin is
NACA0020 aerofoil profiles or airfoil type or shuttle-type.
4. the vertical fair water fin of single-blade ship according to claim 1 and 2, it is characterised in that：The aerofoil profile of the fair water fin
The angle of the interior string of a musical instrument and ship course be 10 °.
5. the vertical fair water fin of single-blade ship according to claim 3, it is characterised in that：The aerofoil profile of the fair water fin it is interior
The string of a musical instrument is 10 ° with the angle of ship course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710053778.2A CN106828847A (en) | 2017-01-24 | 2017-01-24 | The vertical fair water fin of single-blade ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710053778.2A CN106828847A (en) | 2017-01-24 | 2017-01-24 | The vertical fair water fin of single-blade ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106828847A true CN106828847A (en) | 2017-06-13 |
Family
ID=59120966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710053778.2A Pending CN106828847A (en) | 2017-01-24 | 2017-01-24 | The vertical fair water fin of single-blade ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106828847A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191117863A (en) * | 1905-11-12 | 1911-11-30 | Rudolf Wagner | Improvements in Counter-propellers for Marine and Aerial Vessels. |
| CN2054782U (en) * | 1989-09-02 | 1990-03-21 | 武汉水运工程学院 | Energy-saving device for tracking regulating operation of shipping main engine |
| CN2285752Y (en) * | 1996-07-15 | 1998-07-08 | 周新民 | Propeller guide fin |
| CN102381463A (en) * | 2011-08-17 | 2012-03-21 | 上海船舶研究设计院 | Reaction fin in front of propeller |
| CN203358855U (en) * | 2013-07-19 | 2013-12-25 | 上海船舶研究设计院 | Prerotation triangular guide pipe for right-rotating single-propeller ship |
| KR20150135906A (en) * | 2014-05-26 | 2015-12-04 | 현대중공업 주식회사 | Propeller Duct with Pin |
| KR20160129228A (en) * | 2015-04-30 | 2016-11-09 | 삼성중공업 주식회사 | Propulsion efficiency enhancing apparatus |
-
2017
- 2017-01-24 CN CN201710053778.2A patent/CN106828847A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191117863A (en) * | 1905-11-12 | 1911-11-30 | Rudolf Wagner | Improvements in Counter-propellers for Marine and Aerial Vessels. |
| CN2054782U (en) * | 1989-09-02 | 1990-03-21 | 武汉水运工程学院 | Energy-saving device for tracking regulating operation of shipping main engine |
| CN2285752Y (en) * | 1996-07-15 | 1998-07-08 | 周新民 | Propeller guide fin |
| CN102381463A (en) * | 2011-08-17 | 2012-03-21 | 上海船舶研究设计院 | Reaction fin in front of propeller |
| CN203358855U (en) * | 2013-07-19 | 2013-12-25 | 上海船舶研究设计院 | Prerotation triangular guide pipe for right-rotating single-propeller ship |
| KR20150135906A (en) * | 2014-05-26 | 2015-12-04 | 현대중공업 주식회사 | Propeller Duct with Pin |
| KR20160129228A (en) * | 2015-04-30 | 2016-11-09 | 삼성중공업 주식회사 | Propulsion efficiency enhancing apparatus |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |