CN203358855U - Prerotation triangular guide pipe for right-rotating single-propeller ship - Google Patents
Prerotation triangular guide pipe for right-rotating single-propeller ship Download PDFInfo
- Publication number
- CN203358855U CN203358855U CN2013204345153U CN201320434515U CN203358855U CN 203358855 U CN203358855 U CN 203358855U CN 2013204345153 U CN2013204345153 U CN 2013204345153U CN 201320434515 U CN201320434515 U CN 201320434515U CN 203358855 U CN203358855 U CN 203358855U
- Authority
- CN
- China
- Prior art keywords
- leaf
- blade
- propeller
- prewhirling
- prerotation
- 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- Withdrawn - After Issue
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a prerotation triangular guide pipe for a right-rotating single-propeller ship. The prerotation triangular guide pipe is of a sector structure, a second blade and a first blade are arranged on the left side of the longitudinal center line of a propeller hub of a propeller from top to bottom when the propeller is observed from the rear side, a third blade is arranged on the right side of the longitudinal center line of the propeller hub of the propeller, the back of the blade of a guide plate is fixedly connected with the blade tip of the first blade, the blade tip of the second blade and the blade tip of the third blade respectively. The included angle range of the first blade and the longitudinal center line of the propeller hub of the propeller is 70 degrees to 75 degrees, the included angle range of the second blade and the longitudinal center line of the propeller hub of the propeller is 25 degrees to 30 degrees, and the included angle range of the third blade and the longitudinal center line of the propeller hub of the propeller is 70 degrees to 75 degrees. According to the prerotation triangular guide pipe for the right-rotating single-propeller ship, a pre-propeller prerotation principle and the measure of accelerating the upper inflow of the propeller are adopted, the prerotation triangular guide pipe for right-rotating single-propeller ship is ship body energy-efficient equipment enabling the inflow of disc surface of the propeller to be more even, more importantly, the wasted energy of the slip stream field of the propeller due to rotation is reduced, propelling efficiency of the propeller is improved, and additional shape resistance due to stern flow separation is reduced.
Description
Technical field
The utility model relates to the hull energy-saving equipment technology of dextrorotation single-blade ship, more particularly, relates to a kind of triangle conduit of prewhirling for dextrorotation single-blade ship.
Background technology
In the use procedure of dextrorotation single-blade ship, thereby research both domestic and external has been recognized the propulsion coefficient that can improve screw propeller by changing screw propeller influent stream direction and has been reached energy-conservation effect.Prewhirl fin, the fin of prewhirling of the energy saver adopted at present adds full conduit and Mewis Duct etc., but there are the problems such as the low and wake of propeller propulsion coefficient is even not in existing apparatus.
The utility model content
For the defect existed in prior art, the purpose of this utility model is to provide a kind of triangle conduit of prewhirling for dextrorotation single-blade ship, not only reduces in propeller wake field the energy because of spin loss, improves propeller propulsive efficiency; But also even wake makes screw propeller work more steady, reduce propeller exciting force, reduce the ship vibration risk, make attached body structure firm, easily overcome the problems such as intensity, Fatigue Vibration.
For achieving the above object, the utility model adopts following technical scheme:
A kind of triangle conduit of prewhirling for dextrorotation single-blade ship, be located between the screw propeller and hull of stern,
The described triangle conduit of prewhirling is sector structure, from the screw propeller rear side, propeller hub longitudinal centerline left side is provided with the second leaf, the first leaf from top to bottom, and right side is provided with the 3rd leaf, described the first leaf, the second leaf and the 3rd leaf equal in length; The blade root of the blade root of the blade root of described the first leaf, the second leaf and the 3rd leaf is fixedly connected with the screw propeller axle sleeve outside respectively; The blade back of guide plate is fixedly connected with the blade tip of the first leaf, the blade tip of the second leaf and the blade tip of the 3rd leaf respectively;
The section of the section of the section of described the first leaf, the second leaf, the 3rd leaf and the section of guide plate are the airfoil type section;
The guide margin of the guide margin of the guide margin of described the first leaf, the second leaf, the 3rd leaf and the guide margin of guide plate be relative with hull side all; The lagging edge of the lagging edge of the lagging edge of the first leaf, the second leaf, the 3rd leaf and the guide margin of guide plate are all relative with the screw propeller side;
Down, blade back upward on the blade face of described the first leaf;
Upward, blade back down on the blade face of described the 3rd leaf;
The blade face of described the second leaf is relative with the blade back of the first leaf, and the blade back of the second leaf is relative with the page of the 3rd leaf;
Wherein, the angular range of the first leaf and propeller hub longitudinal centerline is 70 °-75 °, the angular range of the second leaf and propeller hub longitudinal centerline is 25 °-30 °, and the angular range of the 3rd leaf and propeller hub longitudinal centerline is 70 °-75 °.
Direction from blade root toward blade tip, the blade face that the angle of the axis of the projection that the blade face of described the first leaf puts at prop shaft and screw propeller axle sleeve is the first leaf is along 12 °-17 ° of axis left-hand revolutions; The blade face that the angle of the axis of the projection that the blade face of described the second leaf puts at prop shaft and screw propeller axle sleeve is the second leaf is along 10 °-15 ° of axis left-hand revolutions; The blade face that the angle of the axis of the projection that the blade face of described the 3rd leaf puts at prop shaft and screw propeller axle sleeve is the 3rd leaf is along 14 °-18 ° of axis left-hand revolutions.
The Thickness Ratio of the Thickness Ratio of the Thickness Ratio of described the first leaf, the second leaf and the 3rd leaf is 10.
The Thickness Ratio of described conduit is 7.
The 90%-105% that the length of described the 3rd leaf is propeller radius.
Compared with prior art, adopt a kind of triangle conduit of prewhirling for dextrorotation single-blade ship of the present utility model to there is following technique effect:
The utility model is compared with the existing fin of prewhirling: one, and more firm on structure, easily overcome the problems such as intensity, Fatigue Vibration; Its two, under square one, can used thickness than less section, additional resistance is less, the better effects if of prewhirling; Its three, increased the valve action of top catheter segment, beneficial to the incoming flow that increases propeller disk, be beneficial to and reach better energy-saving effect.Add full conduit with the fin of prewhirling and compare, avoided the fearless interference to good influent stream field, bottom, reduce the wetted surface area of energy-conservation attached body, because present hull form has all passed through abundant optimization, there is not obvious defect in wake.With Mewis Duct, compare, the triangle conduit of prewhirling of the present utility model is concentric with propeller axis, is conducive to processing and location.
In a word, the utility model relates to before a kind of employing oar prewhirls principle and accelerates screw propeller top influent stream, make propeller disk influent stream hull energy-saving equipment more uniformly, focus on reducing the energy that propeller wake field is lost because of rotation, improve propeller propulsive efficiency and reduce because of the additional form resistance of afterbody flow separation.
The accompanying drawing explanation
Fig. 1 is the scheme of installation that the utility model is arranged on the stern of hull;
Fig. 2 is from A to the structural representation of seeing the triangle conduit of prewhirling for dextrorotation single-blade ship of the present utility model in Fig. 1;
The generalized section that Fig. 3 is leaf of the present utility model and conduit;
The airfoil type section definition schematic diagram that Fig. 4 is three leaves of the present utility model and conduit.
The specific embodiment
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and embodiment.
According to CFD calculating or the features such as hull wake characteristics that model experiment is measured and screw propeller hand of rotation, a kind of front triangle conduit of prewhirling of asymmetric arrangement fully of oar that is loaded on middle low powered stern of utility model, to improve propulsion coefficient, evenly wake, reduce the ship vibration risk.
A kind of triangle conduit of prewhirling for dextrorotation single-blade ship as shown in Figure 1 and Figure 2, be located between the screw propeller 20 and hull 21 of stern, it is characterized in that:
The triangle conduit of prewhirling of the present utility model is sector structure, from screw propeller 20 rear sides, the stern in propeller hub longitudinal centerline left side is provided with the second leaf 12, the first leaf 11 from top to bottom, right side is provided with the equal in length of the 3rd leaf 13, the first leaves 11, the second leaf 12 and the 3rd leaf 13; The blade root of the blade root of the blade root of the first leaf 11, the second leaf 12 and the 3rd leaf 13 is fixedly connected with screw propeller axle sleeve 22 outsides respectively; The blade back of guide plate 14 is fixedly connected with the blade tip of the first leaf 11, the blade tip of the second leaf 12 and the blade tip of the 3rd leaf 13 respectively;
The section of the section of the section of the first leaf, the second leaf, the 3rd leaf and the section of guide plate are the airfoil type section,
The guide margin of the guide margin of the guide margin of the first leaf, the second leaf, the 3rd leaf and the guide margin of guide plate be relative with hull side all; The lagging edge of the lagging edge of the lagging edge of the first leaf, the second leaf, the 3rd leaf and the guide margin of guide plate are all relative with the screw propeller side;
Down, the blade back of the first leaf upward on the blade face of described the first leaf;
Upward, the blade back of the 3rd leaf down on the blade face of described the 3rd leaf;
The blade face of described the second leaf is relative with the blade back of the first leaf, and the blade back of the second leaf is relative with the page of the 3rd leaf;
Wherein, included angle B 1 scope of the first leaf and propeller hub longitudinal centerline is 70 °-75 ° (in Fig. 1, adopt preferably angle 72 °), included angle B 2 scopes of the second leaf and propeller hub longitudinal centerline are 25 °-30 ° (in Fig. 1, adopt preferably angle 28 °), included angle B 3 scopes of the 3rd leaf and propeller hub longitudinal centerline are 70 °-75 ° (in Fig. 1, adopt preferably angle 72 °), can accelerate like this screw propeller top influent stream, make the propeller disk influent stream more even, improve propeller propulsive efficiency.
From blade root toward the direction of blade tip, the blade face that the angle a1 of the axis of the projection that the blade face of described the first leaf puts at prop shaft and screw propeller axle sleeve is the first leaf is along 12 °-17 ° of axis left-hand revolutions (adopt in Fig. 1 preferably angle 17 °); The blade face that the angle a2 of the axis of the projection that the blade face of described the second leaf puts at prop shaft and screw propeller axle sleeve is the second leaf is along 10 °-15 ° of axis left-hand revolutions (adopt in Fig. 1 preferably angle 15 °); The page that the angle a3 of the axis of the projection that the blade face of described the 3rd leaf puts at prop shaft and screw propeller axle sleeve is the 3rd leaf is along 14 °-18 ° of axis left-hand revolutions (adopt in Fig. 1 preferably angle 18 °), adopt before oar the principle of prewhirling, focus on reducing the energy that propeller wake field is lost because of rotation, improve propeller propulsive efficiency.
Shown in Figure 3 again, the Thickness Ratio of the Thickness Ratio of the first leaf 11, the second leaf 12 and the Thickness Ratio of the 3rd leaf 13 are 10, and the Thickness Ratio of guide plate 14 is 7.It should be noted that, in the situation that meet structural strength, require, Thickness Ratio is the smaller the better, can reduce friction drag, above fixed Thickness Ratio be obtaining of being calculated by finite element software.
The utility model is comprised of leaf and the guide plate of 3 complete asymmetric arrangement, and the section shape of leaf and the section shape of guide plate are chosen the little series of the wing middle drag by lift of NACA, and its intensity need to be adjusted according to leaf and the suffered live load of guide plate.The layout of triangle conduit of prewhirling is shown in Fig. 1, and its basic arrangement principle is for conventional 2 leaves in dextrorotation single-blade ship left side, 1, right side leaf.
According to our research, the length of leaf also will be in certain scope the good energy-saving effect of guarantee, the outer top end of leaf will be in the scope of 90%R-105%R, wherein R is propeller radius.
This equipment is installed on the hull before screw propeller, by changing the pre-rotation flow field before flow field direction produces oar, thereby reaches the minimizing degradation of energy, improves the purpose of propeller propulsive efficiency.Carry out detailed leaf layout and anglec of rotation optimization for the ship stern flow fields characteristics after, can reach considerable energy-saving effect.Simultaneously, determine leaf and the supravasal live load of triangle in conjunction with hydrodynamic load and the ship motion of afterbody, and then check intensity.
For example: the triangle conduit application CFD software of prewhirling of the present utility model is installed on VLCC upper after carrying out leaf layout and angle optimization, carries out model experiment at HSVA, forecast result: at 15.5 joints, reduce consumption of power 3.9%.
It should be noted that, the section of described three leaves and guide plate is the airfoil type section, the definition of airfoil type section as shown in Figure 4, wherein, 81 blade faces that are the airfoil type section, 82 for the blade back of airfoil type section, 83 for the guide margin of airfoil type section, 84 be the lagging edge of airfoil type section.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the purpose of this utility model is described, and not with opposing restriction of the present utility model, as long as in essential scope of the present utility model, to variation, the modification of the above embodiment, all will drop in the scope of claim of the present utility model.
Claims (5)
1. the triangle conduit of prewhirling for dextrorotation single-blade ship, be located between the screw propeller and hull of stern, it is characterized in that:
The described triangle conduit of prewhirling is sector structure, from the screw propeller rear side, propeller hub longitudinal centerline left side is provided with the second leaf, the first leaf from top to bottom, and right side is provided with the 3rd leaf, described the first leaf, the second leaf and the 3rd leaf equal in length; The blade root of the blade root of the blade root of described the first leaf, the second leaf and the 3rd leaf is fixedly connected with the screw propeller axle sleeve outside respectively; The blade back of guide plate is fixedly connected with the blade tip of the first leaf, the blade tip of the second leaf and the blade tip of the 3rd leaf respectively;
The section of the section of the section of described the first leaf, the second leaf, the 3rd leaf and the section of guide plate are the airfoil type section;
The guide margin of the guide margin of the guide margin of described the first leaf, the second leaf, the 3rd leaf and the guide margin of guide plate be relative with hull side all; The lagging edge of the lagging edge of the lagging edge of the first leaf, the second leaf, the 3rd leaf and the guide margin of guide plate are all relative with the screw propeller side;
Down, blade back upward on the blade face of described the first leaf;
Upward, blade back down on the blade face of described the 3rd leaf;
The blade face of described the second leaf is relative with the blade back of the first leaf, and the blade back of the second leaf is relative with the page of the 3rd leaf;
Wherein, the angular range of the first leaf and propeller hub longitudinal centerline is 70 °-75 °, the angular range of the second leaf and propeller hub longitudinal centerline is 25 °-30 °, and the angular range of the 3rd leaf and propeller hub longitudinal centerline is 70 °-75 °.
2. the triangle conduit of prewhirling according to claim 1 is characterized in that:
Direction from blade root toward blade tip, the blade face of described the first leaf is along the axis left-hand revolution, and the angular range of the axis of the projection that the blade face of described the first leaf puts at prop shaft and screw propeller axle sleeve is 12 °-17 °;
Direction from blade root toward blade tip, the blade face of described the second leaf is along the axis left-hand revolution, and the angular range of the axis of the projection that the blade face of described the second leaf puts at prop shaft and screw propeller axle sleeve is 10 °-15 °;
Direction from blade root toward blade tip, the blade face of described the 3rd leaf is along the axis left-hand revolution, and the angular range of the axis of the projection that the blade face of described the 3rd leaf puts at prop shaft and screw propeller axle sleeve is 14 °-18 °.
3. the triangle conduit of prewhirling according to claim 1 is characterized in that:
The Thickness Ratio of the Thickness Ratio of the Thickness Ratio of described the first leaf, the second leaf and the 3rd leaf is 10.
4. the triangle conduit of prewhirling according to claim 1 is characterized in that:
The Thickness Ratio of described guide plate is 7.
5. the triangle conduit of prewhirling according to claim 1 is characterized in that:
The 90%-105% that the length of described the 3rd leaf is propeller radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204345153U CN203358855U (en) | 2013-07-19 | 2013-07-19 | Prerotation triangular guide pipe for right-rotating single-propeller ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204345153U CN203358855U (en) | 2013-07-19 | 2013-07-19 | Prerotation triangular guide pipe for right-rotating single-propeller ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203358855U true CN203358855U (en) | 2013-12-25 |
Family
ID=49806653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204345153U Withdrawn - After Issue CN203358855U (en) | 2013-07-19 | 2013-07-19 | Prerotation triangular guide pipe for right-rotating single-propeller ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203358855U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332281A (en) * | 2013-07-19 | 2013-10-02 | 上海船舶研究设计院 | Pre-rotation triangular conduit for right-handed rotation single screw vessel |
| CN104608895A (en) * | 2014-12-22 | 2015-05-13 | 中国船舶重工集团公司第七○二研究所 | Ship stern flow energy recovery device in sector structural style |
| CN105292420A (en) * | 2014-06-12 | 2016-02-03 | 宋京镇 | Propulsion and steering device installed below sea level of outside of right and left shipwall in a ship |
| CN106828847A (en) * | 2017-01-24 | 2017-06-13 | 哈尔滨工程大学 | The vertical fair water fin of single-blade ship |
-
2013
- 2013-07-19 CN CN2013204345153U patent/CN203358855U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332281A (en) * | 2013-07-19 | 2013-10-02 | 上海船舶研究设计院 | Pre-rotation triangular conduit for right-handed rotation single screw vessel |
| CN103332281B (en) * | 2013-07-19 | 2017-03-08 | 上海船舶研究设计院 | Triangle conduit of prewhirling for dextrorotation single-blade ship |
| CN105292420A (en) * | 2014-06-12 | 2016-02-03 | 宋京镇 | Propulsion and steering device installed below sea level of outside of right and left shipwall in a ship |
| CN104608895A (en) * | 2014-12-22 | 2015-05-13 | 中国船舶重工集团公司第七○二研究所 | Ship stern flow energy recovery device in sector structural style |
| CN106828847A (en) * | 2017-01-24 | 2017-06-13 | 哈尔滨工程大学 | The vertical fair water fin of single-blade ship |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103332281A (en) | Pre-rotation triangular conduit for right-handed rotation single screw vessel | |
| CN203358855U (en) | Prerotation triangular guide pipe for right-rotating single-propeller ship | |
| CN101898631A (en) | Rudder bulb type thrust fin-based rudder device | |
| CN103342162A (en) | Front half guide wheel | |
| CN205186502U (en) | Energy -conserving distortion rudder | |
| CN202244050U (en) | Reaction fin in front of oar | |
| CN102381463B (en) | Reaction fin in front of propeller | |
| CN202368779U (en) | Energy-saving propeller | |
| CN102001416A (en) | Stem wave elimination device | |
| CN110116781A (en) | A kind of energy saving hydrofoil for modest type stern ship | |
| CN203902828U (en) | Prerotation fan-shaped guide pipe for rightward rotation single-propeller boat | |
| CN203937848U (en) | Stator before rotor structure before ship propeller | |
| CN208306966U (en) | A kind of ship combination propulsion device | |
| CN206171774U (en) | Contrarotating propeller suitable for single tail ship type | |
| CN102673758B (en) | Propeller with convex and concave guide edge | |
| CN103770919A (en) | Prerotation fan-shaped conduit for right-handed single-screw ship | |
| CN103332280B (en) | Radiance type preposed guide wheel | |
| CN202717022U (en) | Leading edge concave-convex propeller | |
| CN205186501U (en) | Energy -conserving rudder | |
| CN205221049U (en) | Drum -type marine propulsion means | |
| CN210191740U (en) | Energy-saving hydrofoil for thin and small stern ship | |
| CN203473229U (en) | Kamsarmax bulk carrier with propeller containing energy-saving conduit | |
| CN203854849U (en) | Improved movable-web paddle wheel set propeller | |
| CN105035293A (en) | Guide-tube type double-flow-direction propeller | |
| CN201914401U (en) | Wave-damping device on ship bow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20171114 |