CN109606596A - Energy saving half guide wheel before a kind of paddle - Google Patents
Energy saving half guide wheel before a kind of paddle Download PDFInfo
- Publication number
- CN109606596A CN109606596A CN201811440680.3A CN201811440680A CN109606596A CN 109606596 A CN109606596 A CN 109606596A CN 201811440680 A CN201811440680 A CN 201811440680A CN 109606596 A CN109606596 A CN 109606596A
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- China
- Prior art keywords
- blade
- paddle
- conduit
- energy saving
- guide wheel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses half guide wheels energy saving before a kind of paddle, the sector tube of the stern larboard including being arranged close to tailing axle outlet, and the horizontally disposed blade in conduit inner circumferential；The both ends of blade are individually fixed in stern and sector tube inner wall；Wherein the sector tube is symmetrical set about the horizontal plane by paddle shaft center, and circumferential angular range is 90-130 °；Conduit is shrinkage conduit, and inlet diameter is greater than its outlet diameter, and conduit angle of throat is not more than 6 °；Its upper and lower two halves part conduit section of sector tube is wing type profile, and blade back blade face is in oppositely arranged；Blade installing angle is not more than 9 °.Energy saving half guide wheel is directed to the Wake Field feature of right-hand airscrew before paddle of the present invention, pass through the special designing of conduit and blade section, advantageous propeller can be generated in larboard to prewhirl influent stream, increase the influent stream angle of attack of section of screw blade, while not increasing Ship Resistance as far as possible, propulsive efficiency is improved, significant energy-saving effect can be obtained.
Description
Technical field
The present invention relates to a kind of novel ship hydrodynamic force energy savers, more particularly to one kind to be applied to low speed transport in large size
Energy conservation is prewhirled half guide wheel before the marine propeller of ship.
Background technique
Since the 21th century, people more pay attention to energy conservation and environmental protection, and the blowdown of ship enters public sight, reduce ship
Oceangoing ship energy consumption is imperative.International Maritime Organization proposes pressureization quantitative requirement to ship energy saving emission reduction, it is desirable that new by 2025
EEDI (ship energy efficiency index) index of ship reduces by 30%, is greatly to test for Ship Design.In increasingly serious ring
Under packing pressure, ship energy saving emission reduction is paid close attention to by shipbuilding circles and shipping world, how to reduce ship energy consumption as focus of attention, ship
This adopts various measures each bound pair of oceangoing ship industry, and new shipbuilding oceangoing ship takes energy conservation measure one after another to reduce oil consumption, ship emission-reduction technology gusher
Formula development.From the perspective of Ship Propeling, energy saver can be installed additional in hull tail portion and improve propulsive efficiency, to reach energy conservation
Purpose.Emphasis of the hydrodynamic force power-saving technology as research, can effectively achieve effects of energy saving and emission reduction.Current front-mounted energy-saving dress
It is equipped with wake compensating duct, preposition guide wheel of prewhirling, Mewis Duct etc., but these energy savers can only answer in specific ship type
With, energy saver global shape is larger the problems such as, good application cannot be accessed on the lesser ship of hull stern wake.With
The raising of ship form optimization and Design of Propeller technology, energy saver is often difficult to reach ideal energy conservation effect before traditional paddle
Fruit.
Ship conduit and ship disclosed in 202368781 U of CN, using one piece of aerofoil profile plate body and one flat plate structure
Composition, structure used is too simple, and structural vibration performance is poor, can only be directed to specific ship type, energy-saving effect is poor, Bu Nengyou
It promotes on effect ground.
A kind of front half guide wheel disclosed in CN 103342162A, using preposition half conduit and multiple inlet guide vane pieces
Composition, the axial part of the tube wall of preposition half conduit are notch, and one end of the guide vane is circumferentially arranged in preposition half conduit
Inner wall, the other end is connected with hull tail portion.It can be generated on the ship that the structure is on full formed ship oceangoing ship and stern wake is big
Better energy-saving effect, but propeller cannot be improved on the lesser ship of stern wake (such as modest type stern ship)
Plane wake, from being unable to generate better energy-saving effect.
A kind of radiance type preposed guide wheel disclosed in CN 103332280A, using a Preadipocyte factor-1 and it is multiple it is preposition arrive leaf
Piece, the inlet guide vane piece scattering device and arrive blade-section with preposition at the internal detailed annotation in the inner wall of Preadipocyte factor-1
Extend to the outside of Preadipocyte factor-1.The structural conductor is larger, and wetted surface area is larger, generates biggish resistance in shipping high speed navigation
Power cannot reach expected energy-saving effect on high-speed ship.
Summary of the invention
The present invention is intended to provide energy saving half guide wheel before a kind of paddle: the hull tail portion larboard including being arranged close to tailing axle outlet
Sector tube and the conduit inner circumferential arrangement blade；The sector tube is about the horizontal plane for passing through paddle shaft center
It is symmetrical set, the both ends of the blade are individually fixed in stern and sector tube inner wall.
The sector tube be it is integrated, circumferential angular range is 90-130 °.
The sector tube outlet diameter is 1.0 airscrew diameter D, and it is straight that the sector tube inlet diameter is greater than its outlet
Diameter.
The angle of throat of the sector tube is not more than 6 °.
The sector tube includes that sequentially connected top linkage section, the upper half, middle part changeover portion, lower half and lower part connect
Connect section.
The upper half and lower half conduit section are wing type profile.
The upper half and lower half conduit section blade back blade face are in oppositely arranged, the blade back of the upper half conduit section
Outwardly, the blade back of the lower half conduit section is inwardly.
The middle part changeover portion conduit section is symmetrical airfoil section.
For the blade to be circumferential horizontally disposed, blade installing angle is not more than 9 °.
The blade back of the section of the blade is upward.
The present invention relates to half guide wheels energy saving before paddle to be installed on stern larboard, close to the position of tailing axle outlet, is based on dextrorotation spiral shell
The Wake Field feature of rotation paddle can improve the Wake Field of propeller Left half-plane by the special designing of conduit and blade section, increase
The influent stream angle of attack for adding section of screw blade improves propulsive efficiency, to reach section while not increasing Ship Resistance as far as possible
The purpose of energy.
Detailed description of the invention
Fig. 1 is energy saving half Guiding wheel structure schematic diagram before paddle of the present invention；
Fig. 2 is energy saving half guide wheel blade section setting schematic diagram before paddle of the present invention；
Fig. 3 be before paddle of the present invention the blade face of half guide wheel blade section of energy conservation and blade back towards schematic diagram；
Fig. 4 is energy saving half guide wheel scheme of installation before paddle of the present invention；
Fig. 5 be paddle of the present invention before energy conservation half guide wheel sector tube shrinkage schematic diagram.
Specific embodiment
The present invention is intended to provide a kind of improvement propeller influent stream, improves propeller propulsive efficiency, reduces pushing away for ship energy consumption
Into energy saver, it is installed on the nearby side of ship tail portion larboard, tailing axle outlet, energy saving half guide wheel referred to as before paddle.Low speed in large size
The propeller of ships that transport generallys use the design of dextrorotation paddle, and potential wake field is identical as propeller direction of rotation in larboard,
Dextrorotation is with propeller direction of rotation on the contrary, the amendatory leeway of larboard Wake Field is larger, therefore on the quarter larboard can produce energy saver
The raw effect for more obviously improving wake, astarboard role is limited, or even can play negative effect.
As shown in Figure 1, energy saving half guide wheel is by integral type sector tube 100 and one 200 groups of stator vane before paddle of the present invention
At the sector tube 100 can be divided into 5 parts welded together, respectively conduit top linkage section by circumferential position
101, the conduit upper half 102, conduit middle part changeover portion 103, conduit lower half 104 and conduit lower part linkage section 105.Based on dextrorotation
For propeller blade section in the influent stream feature of larboard, upper half conduit and lower half conduit Section Design can more effectively improve axis
To influent stream, the design of top linkage section and lower part linkage section conduit section can produce opposite with propeller direction of rotation tangential
Influent stream, the design of the section blade back of blade upward are prewhirled influent stream also for better generation, top linkage section conduit with just on
Side deviates certain angle setting, is to avoid wake peak region；Lower part linkage section conduit deviates certain angle with underface and sets
It sets, is to reduce the unfavorable interference with hull.Generally speaking, by the special designing of conduit and blade section, spiral shell can be improved
The Wake Field for revolving paddle Left half-plane, increases the influent stream angle of attack of section of screw blade, while not increasing Ship Resistance as far as possible,
Propulsive efficiency is improved, to reach energy-efficient purpose.
As shown in figure 4, sector tube 100 arranges larboard on the quarter, it is connect by both ends with 300 surface of hull, it is horizontal
Center line is symmetrical arranged by paddle shaft center, and about the horizontal plane 400 by paddle shaft center in upper and lower, the sector tube
100 its circumferential angular range are 90-130 °, and the longitudinally mounted angle of conduit is 0 °.
As shown in figure 5, sector tube 100 is shrinkage conduit, inlet diameter is greater than outlet diameter, and outlet diameter is equal to
Airscrew diameter, conduit angle of throat are not more than 6 °.On the basis of airscrew diameter D, the section of sector tube 100 cuts open for airfoil type
Face, section chord length are 0.25-0.35D, and sectional thickness ratio is taken as 0.10-0.13 (referring to Fig. 3).By in sector tube 100
Heart line is consistent with paddle shaft center, i.e., the installing angle of sector tube 100 is 0 °.
As Figure 2-3, the section setting at each position of sector tube 100 is different, and upper and lower two halves part is led
The aerofoil profile of pipe is in oppositely arranged, the wherein section of the section 101P of conduit top linkage section 101 and the conduit upper half 102
102P blade back is arranged outwardly, and the section 104P and 105 section 105P blade back of conduit lower part linkage section of conduit lower half 104 are set inwardly
It sets, 100 middle part changeover portion of sector tube, 103 conduit section 103P uses symmetrical airfoil section.The section 200P of blade 200 with
101P is consistent, and blade back is arranged upward.This set can more adapt to the characteristics of propeller wake field, and to improving, Wake Field is more advantageous.
Arrow represents the blade section from the interception from this in Fig. 3, and P is to claim in the generation of profile；Dotted line represents blade back, and solid line represents leaf
Face.
As shown in Figure 1,3, blade 200 is in horizontally disposed, the section shape of section shape and upper half conduit in the circumferential
Shape is consistent, and blade back is upward.Blade one end is fixed on the inner wall of sector tube 100, and the other end is fixed on 300 surface of stern.Blade
200 section is wing type profile, and section chord length is slightly less than the section chord length of sector tube 100, is 0.15-0.22D.It is preferred that square
Under formula, the longitudinally mounted angle α of blade 200 is generally no greater than 9 °, referring to Fig. 5.
To sum up, the position that energy saving half guide wheel installation is exported with stern larboard, close tailing axle before paddle of the present invention, mainly in
The design of low speed cargo ship ship right-hand airscrew, can be effectively improved the influent stream field of propeller Left half-plane.Energy conservation half before the present invention
Better energy-saving effect may be implemented by the particular profile setting of conduit and effective combination with blade in guide wheel.It is set according to this
It sets, energy saving half guide wheel low speed ships that transport, bulk goods including each tonnage suitable for installation right-hand airscrew before paddle of the present invention
Ship, tanker etc. can get the energy-saving effect of 3-5%.
The above, preferable embodiment only of the invention, but protection scope of the present invention is not limited to that.It is i.e. all
According to equivalence changes made by the content in scope of the present invention patent and modification, should all cover protection scope of the present invention it
It is interior.
Claims (10)
1. energy saving half guide wheel before a kind of paddle, it is characterised in that: the fan including being arranged close to the hull tail portion larboard of tailing axle outlet
The blade of shape conduit and conduit inner circumferential arrangement；The sector tube is in pair about the horizontal plane by paddle shaft center
Claim setting, the both ends of the blade are individually fixed in stern and sector tube inner wall.
2. according to half guide wheel energy saving before paddle described in right 1, it is characterised in that: institute state sector tube be it is integrated, it is all
It is 90-130 ° to angular range.
3. energy saving half guide wheel before the paddle according to right 1 or 2, it is characterised in that: the sector tube outlet diameter is 1.0 spiral shells
Paddle diameter D is revolved, the sector tube inlet diameter is greater than its outlet diameter.
4. according to half guide wheel energy saving before paddle described in right 3, it is characterised in that: the angle of throat of the sector tube is not more than 6 °.
5. energy saving half guide wheel before the paddle according to right 1 or 2, it is characterised in that: the sector tube includes sequentially connected
Top linkage section, the upper half, middle part changeover portion, lower half and lower part linkage section.
6. according to half guide wheel energy saving before paddle described in right 5, it is characterised in that: the upper half and lower half conduit section are machine
Aerofoil profile.
7. according to half guide wheel energy saving before paddle described in right 5, it is characterised in that: the upper half and lower half conduit section blade back
Blade face is in oppositely arranged, and outwardly, the blade back of the lower half conduit section is inwardly for the blade back of the upper half conduit section.
8. according to half guide wheel energy saving before paddle described in right 5, it is characterised in that: the middle part changeover portion conduit section is symmetrical wing
Type profile.
9. the blade is circumferential horizontally disposed, and blade installing angle is not according to half guide wheel energy saving before paddle described in right 1
Greater than 9 °.
10. energy saving half guide wheel before the paddle according to right 1 or 9, it is characterised in that: the blade back of the section of the blade is upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811440680.3A CN109606596A (en) | 2018-11-29 | 2018-11-29 | Energy saving half guide wheel before a kind of paddle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811440680.3A CN109606596A (en) | 2018-11-29 | 2018-11-29 | Energy saving half guide wheel before a kind of paddle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109606596A true CN109606596A (en) | 2019-04-12 |
Family
ID=66004819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811440680.3A Pending CN109606596A (en) | 2018-11-29 | 2018-11-29 | Energy saving half guide wheel before a kind of paddle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109606596A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112173038A (en) * | 2020-09-27 | 2021-01-05 | 江苏新扬子造船有限公司 | Method for mounting preposed pre-rotation guide wheel |
| CN115416832A (en) * | 2022-09-05 | 2022-12-02 | 大连中远海运重工有限公司 | Spiral honeycomb duct energy-saving device for ship |
-
2018
- 2018-11-29 CN CN201811440680.3A patent/CN109606596A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112173038A (en) * | 2020-09-27 | 2021-01-05 | 江苏新扬子造船有限公司 | Method for mounting preposed pre-rotation guide wheel |
| CN112173038B (en) * | 2020-09-27 | 2022-05-17 | 江苏新扬子造船有限公司 | Method for mounting preposed pre-rotation guide wheel |
| CN115416832A (en) * | 2022-09-05 | 2022-12-02 | 大连中远海运重工有限公司 | Spiral honeycomb duct energy-saving device for ship |
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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 | ||
| CB02 | Change of applicant information |
Address after: No. 222, Shanshui East Road, Binhu District, Wuxi City, Jiangsu Province, 214100 Applicant after: CHINA SHIP SCIENTIFIC RESEARCH CENTER ( THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION) Applicant after: China Shipbuilding (Shanghai) Energy Conservation Technology Co.,Ltd. Address before: No. 222, Shanshui East Road, Binhu District, Wuxi City, Jiangsu Province, 214100 Applicant before: CHINA SHIP SCIENTIFIC RESEARCH CENTER ( THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION) Applicant before: CSIC (SHANGHAI) ENERGY SAVING TECHNOLOGY DEVELOPMENT CO.,LTD. |
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| CB02 | Change of applicant information |