CN105329432A - Energy-saving rudder - Google Patents
Energy-saving rudder Download PDFInfo
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- CN105329432A CN105329432A CN201510768890.5A CN201510768890A CN105329432A CN 105329432 A CN105329432 A CN 105329432A CN 201510768890 A CN201510768890 A CN 201510768890A CN 105329432 A CN105329432 A CN 105329432A
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- rudder
- rudder plate
- plate
- leading edge
- thrust fin
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Abstract
The invention relates to a marine component and in particular relates to an energy-saving rudder. The rudder comprises a vertical rudder plate, wherein a rudder stock in running fit with a hull is arranged at the upper end of the rudder plate; the rear segment of the rudder plate is in a regular shape with a semi-elliptical cross section from top to bottom; an upper leading edge of the rudder plate twists toward one side of a vertically symmetrical central plane of the rear segment of the rudder plate; and a lower leading edge of the rudder plate twists toward the other side of the vertically symmetrical central plane of the rear segment of the rudder plate. The rudder is characterized in that an empennage is connected at the rear end of the rudder plate, is vertically arranged and is matched with the rudder plate through hinge joint; and a transmission mechanism used for being connected with a hull is arranged on the empennage. The rudder has the advantages that the camber of the cross section of the rudder plate can be increased; the hydrodynamic performance of the rudder plate can be improved; and the rudder is beneficial to control of the ships.
Description
Technical field
The present invention relates to a kind of assembly peculiar to vessel, be mounted in the energy-conservation rudder for ship on rear side of stern propeller specifically.
Background technology
Screw propeller is for the most conventional means of propulsion of ship, and it has two or more blade, for reducing fuel oil consumption and the discharge of boats and ships, should improve the propulsion coefficient of screw propeller as far as possible.From screw propeller and rudder for ship interactional angle, rudder for ship and spiral are coordinated mutually, be beneficial to reclaim the energy after oar in wake flow, improve the propulsion coefficient of screw propeller/rudder system, become a significant consideration in propulsion of ship design.
Application number is 200910173151.6(publication No. is CN101716989A) Chinese invention patent application disclose a kind of propelling peculiar to vessel and steering gear, in the upper leading edge of this device rudder plate and lower leading edge, at least one has constant windup-degree, namely the upper leading edge of rudder plate or lower leading edge are reversed to the side in the vertical center of symmetry face of rudder plate back segment, or the upper leading edge of rudder plate, lower leading edge are reversed respectively to the both sides in the vertical center of symmetry face of rudder plate back segment.This rudder plate is arranged on the rear side of propeller for vessels, effectively can improves the slip-stream of the screw propeller through rudder region, and then promote the efficiency of screw propeller.
The rudder for ship rudder plate of current use is all the same with above-mentioned patent application, is single integral slab structure, and its cross-sectional plane is all circular arc in leading edge, arch upward to both sides in middle part, afterbody is the streamline contour of wedge angle.Due to be subject to rudder plate overall dimensions, rudder stock hanging by force intensity, use in current conditions, handling etc. restriction, it is very large that the camber of rudder plate cross-sectional plane can not design, otherwise can reduce the hydrodynamic performance of rudder plate, camber increase simultaneously can increase the weight of rudder plate, is unfavorable for the manipulation of boats and ships.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of energy-conservation rudder for ship, and this rudder for ship can increase the camber of rudder plate cross-sectional plane, improves the hydrodynamic performance of rudder plate, is conducive to the manipulation of boats and ships.
Above-mentioned for problem for solving, take following technical scheme:
Energy-conservation rudder for ship of the present invention comprises rudder plate, and this rudder plate is arranged in vertical, and there is the rudder stock for being rotating with hull its upper end.The back segment of described rudder plate is cross-sectional plane is from top to bottom half-elliptic regular shape.The upper leading edge of described rudder plate is reversed to the side in the vertical center of symmetry face of rudder plate back segment, and the lower leading edge of rudder plate is reversed to the opposite side in the vertical center of symmetry face of rudder plate back segment.Be characterized in that the rear end of described rudder plate is connected with empennage, this empennage is arranged in vertical, and coordinates in hinged between its with rudder plate.Described empennage there is the transmission device for being connected with hull.
Further improvement of the present invention scheme be described rudder plate go forward edge from top to bottom, lower leading edge all has constant windup-degree from top to bottom.On described rudder plate, the windup-degree of leading edge, lower leading edge are all less than 18 degree.The invariable windup-degree that the upper leading edge of rudder plate, lower leading edge have effectively can improve the slip-stream of the screw propeller through rudder region, and then the efficiency of ship-lifting screw propeller.
Further improvement of the present invention scheme is that the both sides, middle part of described rudder plate all have thrust fin, and described thrust fin is all near the leading edge of rudder plate.Thrust fin effectively can reclaim the energy lost because of wake flow circumference induction velocity, has good boosting energy-saving effect.
The vertical section of described thrust fin is leading edge is circular arc, arch upward up and down in middle part, afterbody is the streamline contour of wedge angle, and its line arriving rearmost end is foremost in being in tilted layout rearwardly and upwardly, and the angle angle of itself and horizontal direction is 3 ~ 6 degree.Thrust fin adopt swept-out section and backward low-angle upwards steeve, be conducive to the wake flow adapting to screw propeller, and produce suction at thrust fin afterbody, more obvious to the assist of boats and ships.
The thrust fin of described rudder plate both sides is one high and one low layout, the upper surface camber being positioned at high-order thrust fin is greater than lower surface camber, the upper surface camber being positioned at the thrust fin of low level is less than lower surface camber, and the line arriving rearmost end foremost of the vertical section of two thrust fins is positioned at same plane.When the propeller race of boats and ships to flow through the upper and lower surface of thrust fin with certain angle of attack, can form suction surface in the little mineralization pressure face of camber, in the one side that camber is large, now hydrodynamic force can promote the assist to boats and ships with joint efforts further.
The outer end of described thrust fin is all connected with the vertical stream plate processed arranged.Along the upper surface flush with this thrust fin on the stream plate processed being positioned at high-order thrust fin outer end, the below at this thrust fin is given prominence on lower edge; Along giving prominence to above this thrust fin on the stream plate processed being positioned at the thrust fin outer end of low level, lower edge flushes with the lower surface of this thrust fin.What system stream plate can eliminate that propeller race roll to suction surface by acting face in thrust fin outer end streams, and reduces the degradation of energy of thrust fin outer end annex generation.
Further improvement project of the present invention be described rudder plate leading portion in the middle part of have rudder ball, this rudder ball is for spinning taper gyro-rotor, its leading portion is similar to semisphere and is positioned at the front of rudder plate leading edge, and its back segment and rudder plate are connected in one, and this rudder ball is positioned at the excessive position of leading edge and lower leading edge on rudder plate.During installation, the position of rudder ball should be corresponding with the propeller hub position of hull screw propeller, and the hub whirlpool turbulent flow produced when can eliminate propeller rotational, recuperated energy, improves the propulsion coefficient of screw propeller.
Take such scheme, have the following advantages:
Because the rudder plate rear end of energy-conservation rudder for ship of the present invention is connected with empennage, coordinate in hinged between this empennage with rudder plate, and empennage has the transmission device for being connected with hull.During use, empennage is connected with hull by transmission device, can play the effect of hanging rudder plate, add the connection of rudder pin and hull, namely passes through 2 suspended support between rudder plate and hull, greatly can improve Joint strenght and the stability of rudder plate and hull.Therefore, compared with background technology, this rudder for ship can increase the camber of rudder plate cross-sectional plane, and empennage plays guide functions, effectively can reclaim the energy of screw propeller rear end wake flow, improves the hydrodynamic performance of rudder plate, the maneuvering performance of ship-lifting.In addition, empennage and transmission device can share the weight that when rudder plate is hung, rudder stock bears, even if the weight of rudder plate increases, rudder stock still can keep good rotation, is conducive to the manipulation of boats and ships.
Accompanying drawing explanation
Fig. 1 is the structural representation of energy-conservation rudder for ship of the present invention;
Fig. 2 be in Fig. 1 A-A to cutaway view;
Fig. 3 is that leading edge on rudder plate, lower leading edge are at the projection view of horizontal surface;
Fig. 4 is the projection view of thrust fin in perpendicular of rudder plate both sides;
Fig. 5 be in Fig. 2 B-B to cutaway view.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, Figure 2 and Figure 3, energy-conservation rudder for ship of the present invention comprises rudder plate 1, and this rudder plate 1 is arranged in vertical, and there is the rudder stock 7 for being rotating with hull 8 its upper end.The back segment of described rudder plate 1 is cross-sectional plane is from top to bottom half-elliptic regular shape.The upper leading edge 1A of described rudder plate 1 reverses to the side in the vertical center of symmetry face of rudder plate 1 back segment, and the lower leading edge 1B of rudder plate 1 reverses to the opposite side in the vertical center of symmetry face of rudder plate 1 back segment.The rear end of described rudder plate 1 is connected with empennage 2, and this empennage 2 is arranged in vertical, and coordinates in hinged between its with rudder plate 1.Described empennage 2 there is the transmission device for being connected with hull 8.Described transmission device comprises the sleeve 5 in horizontal arrangement, and this sleeve 5 is fixed on the upper end of empennage 2, and has guide rod 6 in sleeve 5, in bearing fit between guide rod 6 and sleeve 5; One end of the corresponding rudder plate 1 of described guide rod 6 is stretched out outside sleeve 5, and this end of guide rod 6 is connected with vertical bearing pin 4, coordinates during use between this bearing pin 4 with hull 8 in rotating shape.When energy-conservation rudder for ship of the present invention is connected with hull 8, and rudder plate 1 when rotating under the driving of rudder stock 7, this transmission device can make empennage 2 also action thereupon, now one end of guide rod 6 is rotated around the axis of bearing pin 4, the other end of guide rod 6 slides in sleeve 5, and empennage 2 will rotate relative to rudder plate 1 according to specific rotational angle.
From the viewpoint of playing the hydrodynamic performance of this rudder for ship and being convenient to transmission device action two, the trailing edge of empennage 2 is the best to the distance of itself and rudder plate 1 hinged place axis 02. ~ 0.22 times of should be the total chord length of rudder for ship section (i.e. rudder plate 1+ empennage 2).
During use (Fig. 1), if energy-conservation rudder for ship of the present invention is positioned at the rear of clockwise propeller 11, now on the top of rudder plate 1, there is the incoming flow from left front, the bottom of rudder plate 1 has the incoming flow from right front, the upper and lower of rudder plate 1 is reversed respectively the distribution of pressure that certain angle effectively can improve rudder plate 1 leading edge, postpone the appearance of cavitation corrosion.For this reason, the upper leading edge 1A of rudder plate 1 has relative to rudder plate 1 section line of centers from torsion shaft (rudder stock 7 axis) towards the constant windup-degree of left front; The lower leading edge 1B of rudder plate 1 has relative to rudder plate 1 section line of centers from torsion shaft (rudder stock 7 axis) towards the constant distortion angle of right front.On rudder plate 1, the distortion angle of leading edge 1A, lower leading edge 1B is all less than 18 degree, is preferably less than 13 degree, most preferably between 6 degree to 11 degree.If energy-conservation rudder for ship of the present invention to be arranged on the rear of left handed propeller 11, then on its rudder plate 1, the torsional direction of leading edge 1A, lower leading edge 1B should be contrary to the above.
The center shaft of described rudder stock 7 accounts for 40 ~ 55% of rudder plate 1 and the horizontal overall length of empennage 2 to the distance of rudder plate 1 leading edge, and namely the lateral length of rudder plate 1 leading portion twist part accounts for 40 ~ 55% of the total chord length of rudder for ship section.
All there is thrust fin 10 both sides, middle part of described rudder plate 1, and described thrust fin 10 is all near the leading edge of rudder plate 1.
As shown in Figure 4 and Figure 5, the vertical section of described thrust fin 10 is leading edge is circular arc, arch upward up and down in middle part, afterbody is the streamline contour of wedge angle, and its line arriving rearmost end is foremost in being in tilted layout rearwardly and upwardly, and the angle angle of itself and horizontal direction is 3 ~ 6 degree.
The thrust fin 10 of described rudder plate 1 both sides is in one high and one low layout, the upper surface camber being positioned at high-order thrust fin 10 is greater than lower surface camber, the upper surface camber being positioned at the thrust fin 10 of low level is less than lower surface camber, and the line arriving rearmost end foremost of the vertical section of two thrust fins 10 is positioned at same plane (Fig. 4).
In the present embodiment, thrust fin 10 section adopts asymmetric airfoil, and the sectional thickness ratio of this wing is 0.15, and the distance of the maximum ga(u)ge distance leading edge of a wing is 0.3 times of wing chord length.The dead aft (Fig. 1) of clockwise propeller 11 is arranged on for this rudder for ship, on the left of rudder plate 1 and thrust fin 10 elevation angle β (Fig. 4) rearwardly and upwardly on right side generally get 3 degree suitable to 6 degree, the elevation angle β of thrust fin 10 increases the incoming flow angle of attack, add the lift of thrust fin 10, effectively can promote the assist of thrust fin 10.The leading edge of thrust fin 10 has sweepback angle α (Fig. 2), and do not break the prerequisite of the smooth slippage of foreign material in the rear wake flow of mozzle and blade and screw propeller 11 when guaranteeing to come about under, desirable 25 degree to 45 degree of α, preferably gets 27 degree to 35 degree.The spanwise length of thrust fin 10 is larger in theory, and the lift of thrust fin 10 is larger, and the boosting being more conducive to thrust fin 10 is energy-conservation.But more constantly reduce close to the pitch angle of screw propeller 11 radius screw propeller 11 and the contraction of wake flow after screw propeller 11, the incoming flow angle of attack of thrust fin 10 leading edge constantly reduces, and makes the resistance of thrust fin 10 increase, reduces the boosting energy-saving effect of thrust fin 10 on the contrary.For this reason, during use, the spanwise length of thrust fin 10 should be got 0.3 times of hull 8 screw propeller 11 diameter and is advisable to 0.4 times; Meanwhile, the chord length of thrust fin 10 root is about the 0.45-0.55 of the total chord length of rudder for ship section doubly.
The outer end of described thrust fin 10 is all connected with the vertical stream plate 3 processed arranged.Along the upper surface flush with this thrust fin 10 on the stream plate 3 processed being positioned at high-order thrust fin 10 outer end, the below (Fig. 5) at this thrust fin 10 is given prominence on lower edge; Along giving prominence to above this thrust fin 10 on the stream plate 3 processed being positioned at thrust fin 10 outer end of low level, lower edge flushes with the lower surface of this thrust fin 10 (contrary with Fig. 5 above-below direction).System stream plate 3 can stop the generation of thrust fin 10 wing tip eddy current, reduces degradation of energy.
As depicted in figs. 1 and 2, have rudder ball 9 in the middle part of the leading portion of described rudder plate 1, this rudder ball 9 is for spinning taper gyro-rotor, and its leading portion is similar to semisphere and is positioned at the front of rudder plate 1 leading edge, its back segment is connected in one with rudder plate 1, and this rudder ball 9 is positioned at the position that on rudder plate 1, leading edge 1A and lower leading edge 1B is excessive.During installation, the rotation axis of rudder ball 9 should with screw propeller 11 dead in line of hull 8, for effectively eliminating propeller hub 12 trailing vortex, absorb the energy of trailing vortex loss, the maximum rotating diameter of rudder ball 9 should slightly larger than propeller hub 12 diameter of screw propeller 11.
CFD simulation calculation, model experiment and part real ship service condition shows: energy-conservation rudder for ship of the present invention, in proper use of situation, has the energy-saving effect of 4%-8%, is a outstanding hydrodynamic force energy saver; And can cavitation corrosion be postponed, effectively extend rudder system service life; Promote the hydrodynamic performance of rudder system, improve road-holding property and the course stability of boats and ships.
Claims (9)
1. an energy-conservation rudder for ship, comprises rudder plate (1), and this rudder plate (1) is arranged in vertical, and there is the rudder stock (7) for being rotating with hull its upper end; The back segment of described rudder plate (1) is cross-sectional plane is from top to bottom half-elliptic regular shape; The upper leading edge (1A) of described rudder plate (1) is reversed to the side in the vertical center of symmetry face of rudder plate (1) back segment, and the lower leading edge (1B) of rudder plate (1) is reversed to the opposite side in the vertical center of symmetry face of rudder plate (1) back segment; It is characterized in that the rear end of described rudder plate (1) is connected with empennage (2), this empennage (2) is arranged in vertical, and coordinates in hinged between its with rudder plate (1); Described empennage (2) there is the transmission device for being connected with hull.
2. energy-conservation rudder for ship as claimed in claim 1, it is characterized in that the upper leading edge (1A) of described rudder plate (1) from top to bottom, lower leading edge (1B) all has constant windup-degree from top to bottom.
3. energy-conservation rudder for ship as claimed in claim 2, is characterized in that the windup-degree of leading edge (1A), lower leading edge (1B) on described rudder plate (1) are all less than 18 degree.
4. energy-conservation rudder for ship as claimed in claim 1, it is characterized in that all there is thrust fin (10) both sides, middle part of described rudder plate (1), described thrust fin (10) is all near the leading edge of rudder plate (1).
5. energy-conservation rudder for ship as claimed in claim 4, it is characterized in that the vertical section of described thrust fin (10) be leading edge is circular arc, arch upward up and down in middle part, afterbody is the streamline contour of wedge angle, its line arriving rearmost end is foremost in being in tilted layout rearwardly and upwardly, and the angle angle of itself and horizontal direction is 3 ~ 6 degree.
6. energy-conservation rudder for ship as claimed in claim 5, it is characterized in that the thrust fin (10) of described rudder plate (1) both sides is in one high and one low layout, the upper surface camber being positioned at high-order thrust fin (10) is greater than lower surface camber, the upper surface camber being positioned at the thrust fin (10) of low level is less than lower surface camber, and the line arriving rearmost end foremost of the vertical section of two thrust fins (10) is positioned at same plane.
7. energy-conservation rudder for ship as claimed in claim 6, is characterized in that the outer end of described thrust fin (10) is all connected with vertical stream plate (3) processed of arranging.
8. energy-conservation rudder for ship as claimed in claim 7, the stream plate (3) processed that it is characterized in that being positioned at high-order thrust fin (10) outer end is upper along the upper surface flush with this thrust fin (10), and the below in this thrust fin (10) is given prominence on lower edge; The stream plate (3) processed being positioned at thrust fin (10) outer end of low level is upper along giving prominence in the top of this thrust fin (10), and lower edge flushes with the lower surface of this thrust fin (10).
9. the energy-conservation rudder for ship according to any one of claim 1 to 8, rudder ball (9) is had in the middle part of the leading portion that it is characterized in that described rudder plate (1), this rudder ball (9) is for spinning taper gyro-rotor, its leading portion is similar to semisphere and is positioned at the front of rudder plate (1) leading edge, its back segment and rudder plate (1) are connected in one, and this rudder ball (9) is positioned at rudder plate (1) goes up leading edge (1A) and the excessive position of lower leading edge (1B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510768890.5A CN105329432A (en) | 2015-11-12 | 2015-11-12 | Energy-saving rudder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510768890.5A CN105329432A (en) | 2015-11-12 | 2015-11-12 | Energy-saving rudder |
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| Publication Number | Publication Date |
|---|---|
| CN105329432A true CN105329432A (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510768890.5A Pending CN105329432A (en) | 2015-11-12 | 2015-11-12 | Energy-saving rudder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112512919A (en) * | 2018-06-11 | 2021-03-16 | Mol 技术－贸易株式会社 | Rudder for ship and ship |
| CN115052810A (en) * | 2020-01-30 | 2022-09-13 | 现代重工业株式会社 | Steering device and ship with same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189159A (en) * | 2005-04-26 | 2008-05-28 | 现代重工业株式会社 | Thrust fin for ship |
| CN101898630A (en) * | 2008-09-12 | 2010-12-01 | 瓦锡兰荷兰公司 | Propulsion and steering arrangement |
| CN101898631A (en) * | 2010-07-23 | 2010-12-01 | 哈尔滨工程大学 | Rudder device based on rudder ball thrust fin |
| CN102131695A (en) * | 2008-08-20 | 2011-07-20 | 水翼艇技术株式会社 | Wing structure of WIG boat |
| CN205186501U (en) * | 2015-11-12 | 2016-04-27 | 无锡德林船舶设备有限公司 | Energy -conserving rudder |
-
2015
- 2015-11-12 CN CN201510768890.5A patent/CN105329432A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189159A (en) * | 2005-04-26 | 2008-05-28 | 现代重工业株式会社 | Thrust fin for ship |
| CN102131695A (en) * | 2008-08-20 | 2011-07-20 | 水翼艇技术株式会社 | Wing structure of WIG boat |
| CN101898630A (en) * | 2008-09-12 | 2010-12-01 | 瓦锡兰荷兰公司 | Propulsion and steering arrangement |
| CN101898631A (en) * | 2010-07-23 | 2010-12-01 | 哈尔滨工程大学 | Rudder device based on rudder ball thrust fin |
| CN205186501U (en) * | 2015-11-12 | 2016-04-27 | 无锡德林船舶设备有限公司 | Energy -conserving rudder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112512919A (en) * | 2018-06-11 | 2021-03-16 | Mol 技术－贸易株式会社 | Rudder for ship and ship |
| CN115052810A (en) * | 2020-01-30 | 2022-09-13 | 现代重工业株式会社 | Steering device and ship with same |
| CN115052810B (en) * | 2020-01-30 | 2024-06-07 | 现代重工业株式会社 | Steering device and ship having the same |
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