CN105416538A - Marine screw propeller with deformable paddles - Google Patents
Marine screw propeller with deformable paddles Download PDFInfo
- Publication number
- CN105416538A CN105416538A CN201510890943.0A CN201510890943A CN105416538A CN 105416538 A CN105416538 A CN 105416538A CN 201510890943 A CN201510890943 A CN 201510890943A CN 105416538 A CN105416538 A CN 105416538A
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- Prior art keywords
- alloy wire
- row
- blade
- propeller
- screw propeller
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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
- 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
- B63H1/26—Blades
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Laminated Bodies (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention relates to a marine screw propeller with deformable paddles to solve the problem that when a traditional marine screw propeller is in non-designed work conditions such as the high maneuvering running, the performance of the screw propeller is obviously lowered. A new method needs to be sought to design the marine screw propeller and improve the performance of the marine screw propeller. The marine screw propeller comprises a propeller hub and the multiple paddles. The paddles comprise paddle bodies and paddle frames. Each paddle frame comprises a main frame beam, a first row of alloy wires and a second row of alloy wires, wherein the first row of alloy wires and the second row of alloy wires are symmetrically arranged on the two sides of the main frame beam. The paddle frames are installed on the corresponding paddle bodies, and the multiple paddle bodies are arranged on the paddle hub in the radial direction. The marine screw propeller is used in the screw propeller manufacturing field.
Description
Technical field
The present invention relates to the marine propeller of deformable blade.
Background technology
Marine propeller is as the water surface or the most popular propulsion equipment of submarine navigation device, and no matter since it comes out, just played irreplaceable effect, be navigation unit by water, as naval vessel, torpedo etc., or submarine navigation device, as submarine, submerge devices etc., their propelling all be unable to do without screw propeller.At present, the screw propeller that most of water surface and submarine navigation device adopt, its design plan mainly contains two kinds: scheme one is geometry in particular screw propeller design scheme, under design conditions, this screw propeller can obtain best tractive performance, and this design plan is also the design plan that current most common technique is the most ripe; Scheme two is adjustable pitch propeller design plans, and this screw propeller can change its inclination angle within the specific limits thus pitch is changed, to adapt to the navigation under different operating mode.The feature that above-mentioned two kinds of design plans have it common, one of them the most obvious weak point is exactly: under off design behaviour during such as high powered travel, and propeller performance has obvious decline.Due to this reason, make us must find new method to design marine propeller, thus improve the performance of marine propeller.
Summary of the invention
Content of the present invention is to solve traditional marine propeller under off design behaviour during such as high powered travel, propeller performance has obvious decline, new method must be found and design marine propeller, improve the performance of marine propeller, and then the marine propeller of deformable blade is provided.
The present invention is the technical scheme adopted that solves the problem:
The marine propeller of deformable blade, it comprises propeller hub and multiple blade, blade comprises blade body and blade skeleton, blade skeleton comprises skeleton girder, first row B alloy wire and second row B alloy wire, first row B alloy wire and second row B alloy wire are symmetricly set on the both sides of skeleton girder, blade skeleton is arranged on blade body, and multiple blade body is radially arranged on propeller hub.
The invention has the beneficial effects as follows: by carrying out testing and analysis, optimal propeller configurations under determining often kind of operating mode to the performance under the different operating mode of screw propeller, thus determine that deformation program is bulk deformation or local deformation, under determining a certain operating mode after optimal deformation program, when this operating mode, be energized to the B alloy wire in the first row B alloy wire 6 of a few or whole accordingly and second row B alloy wire 7, then every root B alloy wire heat release after powered up, the shape memory polymer composite material temperature of B alloy wire region is raised, when temperature is increased to more than glass transition temperature (glass transition temperature is the characteristic temperature that rubbery state that glassy state that shape-memory polymer is larger by rigidity is less to rigidity transforms), this region rigidity sharply reduces, thus B alloy wire is able to flexural deformation, thus drive this region camber to change, be reduced to after below glass transition temperature at this regional temperature, the shape-memory polymer in this region becomes glassy state, rigidity replys initial condition, if again lower the temperature, until when B alloy wire returns back to again the trend of rectilinear form, now because marmem and screw blade deformation cause having prestress to exist, rapid heated shape memory alloy silk is to the glass transition temperature of shape-memory polymer, now shape-memory polymer returns back to initial condition, and namely screw blade returns back to initial condition.Under same rotating speed, the difformity of screw propeller corresponds to different propulsive forces and propulsion coefficient, the program can realize the change of screw propeller propulsive force, and under different rotating speeds, keep screw propeller all to have relatively higher propulsion coefficient and larger fltting speed and propulsive force, have under maximum speed of revolution and compare the higher fltting speed of similar screw propeller and larger propulsive force, when boats and ships are in cruising condition, can make screw propeller that certain distortion occurs makes its work efficiency the highest, thus fuel saving, when propeller load is overweight, easily part load can be laid down by changing its local camber, while the few damaged of protection screw propeller, also the impact failure brought because of the mode of operation of conversion marine main engine is avoided, the high degree of flexibility of this screw propeller and multi-operation mode will improve its Combination property greatly, it is made more to be adapted to complicated marine environment, screw propeller is made to have high efficiency, large propulsive force, the effect of high maneuverability, the difformity local deformation of screw propeller or bulk deformation can realize high efficiency or high motor-driven operation under different operating mode, improve screw propeller to the adaptivity of different complex working condition.
Accompanying drawing explanation
Fig. 1 is integral structure front elevation of the present invention, Fig. 2 is integral structure axonometric drawing of the present invention, Fig. 3 is the temperature of two-way shape memory alloys and diastrophic graph of relation, abscissa is heating-up temperature, ordinate is deformation extent, deformation extent calculates with the angle of bend of B alloy wire, this shape-memory alloy wire is two-way shape memory alloys silk, its original shape is linearity (T=20 DEG C), be out of shape for making it, after B alloy wire energising, B alloy wire is heating up, until temperature more than 150 DEG C (20 DEG C ~ 150 DEG C be the stage a), B alloy wire starts to occur bending and deformation, until be warming up to 170 DEG C of distortion maximum (150 DEG C ~ 170 DEG C is stage b), B alloy wire angle of bend is now 10 °, B alloy wire is made to return back to original-shape if want, reduce electrical current, B alloy wire temperature starts to decline, until drop to lower than 40 DEG C (170 DEG C ~ 40 DEG C is stage c), B alloy wire starts to return back to rectilinear form, until 20 degrees Celsius of replies complete (40 DEG C ~ 20 DEG C is stage d).
Detailed description of the invention
Detailed description of the invention one: composition graphs 1-Fig. 2 illustrates present embodiment, the marine propeller of deformable blade described in present embodiment, it comprises propeller hub 1 and multiple blade 2, blade 2 comprises blade body 3 and blade skeleton 4, blade skeleton 4 comprises skeleton girder 5, first row B alloy wire 6 and second row B alloy wire 7, first row B alloy wire 6 and second row B alloy wire 7 are symmetricly set on the both sides of skeleton girder 5, and blade skeleton 4 is arranged on blade body 3, and multiple blade body 3 is radially arranged on propeller hub 1.
Detailed description of the invention two: composition graphs 1 and Fig. 2 illustrate present embodiment, the marine propeller of present embodiment deformable blade, described skeleton girder 5 is hollow body, and other is identical with detailed description of the invention one.
Detailed description of the invention three: composition graphs 1 and Fig. 2 illustrate present embodiment, the marine propeller of deformable blade described in present embodiment, described first row B alloy wire 6 is arranged by the B alloy wire side by side parallel that multiple length is different and forms, distance on first row B alloy wire 6 between adjacent two B alloy wires is 1/48 ~ 1/10 of screw propeller tip circular diameter, and the length of each B alloy wire is skeleton girder 5 to screw propeller guide margin or screw propeller with 1/2 ~ 9/10 of back gauge, second row B alloy wire 7 is arranged by the B alloy wire side by side parallel that multiple length is different and forms, distance on second row B alloy wire 7 between adjacent two B alloy wires is 1/48 ~ 1/10 of screw propeller tip circular diameter, and the length of each B alloy wire is skeleton girder 5 to screw propeller guide margin or screw propeller with 1/2 ~ 9/10 of back gauge, when tip circle and screw propeller rotate, circular trace drawn by blade blade tip, using propeller blade blade tip (blade summit) as boundary, edge, blade blade face divides in order to two sections.One side of " close " propeller turning direction is then guide margin, and another side is exactly lagging edge.Other is identical with detailed description of the invention one.
Detailed description of the invention four: composition graphs 1-Fig. 2 illustrates present embodiment, the marine propeller of present embodiment deformable blade, on described first row B alloy wire 6, the two poles of the earth of power supply are accessed at the two ends of each B alloy wire respectively by wire, on second row B alloy wire 7, the two poles of the earth of power supply are accessed at the two ends of each B alloy wire respectively by wire, and on first row B alloy wire 6 on two wires of each B alloy wire and second row B alloy wire 7 two wires of each B alloy wire be arranged in the hollow body of skeleton girder 5, other is identical with detailed description of the invention one.
Detailed description of the invention five: composition graphs 1-Fig. 3 illustrates present embodiment, the marine propeller of deformable blade described in present embodiment, described skeleton girder 5 is the skeleton girders be made up of light-weight metal or composite material, the length of described skeleton girder 5 is 1/3 ~ 1/2 of screw propeller tip circular diameter, and other is identical with detailed description of the invention one.
Detailed description of the invention six: composition graphs 1-Fig. 2 illustrates present embodiment, the marine propeller of deformable blade described in present embodiment, described blade body 3 is that after adopting the laying mould pressing process of composite material to lay multi-layer fiber reinforcing phase, mold pressing forms, blade skeleton 4 is arranged in multi-layer fiber, and other is identical with detailed description of the invention one.
Detailed description of the invention seven: composition graphs 1-Fig. 3 illustrates present embodiment, the marine propeller of deformable blade described in present embodiment, described first row B alloy wire 6 is the first row B alloy wires be made up of two-way shape memory alloys material, and described second row B alloy wire 7 is the second row B alloy wires be made up of two-way shape memory alloys material, so-called bidirectional shape memory process refers to: two-way shape memory alloys material is when lower temperature (20 DEG C-150 DEG C in such as Fig. 3), B alloy wire keeps linearity substantially, when heating-up temperature is higher than a certain specified temp (150 DEG C-170 DEG C in such as Fig. 3), B alloy wire becomes bending from linearity, and reduced by higher temperature (170 DEG C in Fig. 3) along with temperature and keep curved shape always, until temperature is reduced to a certain specified temp (40 DEG C in such as figure), B alloy wire replys rectilinear form gradually by bending, again carry out heating and lowering the temperature, this process can circulate appearance, other is identical with detailed description of the invention one.
Detailed description of the invention eight: composition graphs 1-Fig. 2 illustrates present embodiment, the marine propeller of deformable blade described in present embodiment, the heat release after powered up of described B alloy wire, the shape memory polymer composite material temperature of B alloy wire region is raised, when temperature is increased to more than glass transition temperature (glass transition temperature is the characteristic temperature that rubbery state that glassy state that shape-memory polymer is larger by rigidity is less to rigidity transforms), this region rigidity sharply reduces, thus B alloy wire is out of shape, and then drive this region camber to change, other is identical with detailed description of the invention seven.
Detailed description of the invention nine: composition graphs 1-Fig. 2 illustrates present embodiment, the marine propeller of deformable blade described in present embodiment, described blade 2 can change own form according to actual needs, both B alloy wire can have been driven to realize bulk deformation, can realize local deformation by drive part B alloy wire again, and the shape after distortion can return back to original shape as required completely, separately control between every root B alloy wire, be independent of each other, other is identical with detailed description of the invention seven.
Detailed description of the invention ten: composition graphs 1-Fig. 2 illustrates present embodiment, the marine propeller of deformable blade described in present embodiment, described blade body 3 is the blade bodies be made up of the composite material of Shape-based interpolation memory polymer matrix, and other is identical with detailed description of the invention one.
Principle of work
By carrying out testing and analysis, optimal propeller configurations under determining often kind of operating mode to the performance under the different operating mode of screw propeller, thus be bulk deformation or local deformation according to different operating mode determination deformation programs, after determining the deformation program under a certain operating mode, when this operating mode, the initial condition of B alloy wire is straightened condition, when after energising, its temperature rises, the composite material of shape memory heating of B alloy wire place regional area, until time the glass transition temperature of shape-memory polymer (120 DEG C in such as Fig. 3), shape memory polymer composite material rigidity declines greatly, when temperature continues to rise to a certain temperature (150 DEG C in such as Fig. 3), it is bending that B alloy wire drives composite material of shape memory to produce to direction, blade face, then the temperature reducing electrical current B alloy wire declines thereupon, blade 2 starts cooling, until shape-memory polymer glass transition temperature (120 DEG C in such as Fig. 3) below, the rigidity of composite material of shape memory increases greatly, blade body 3 is out of shape, original shape is replied if want, continue as blade cooling, until temperature is down to a certain characteristic temperature (30 DEG C in such as Fig. 3), B alloy wire returns back to again the trend of initial straight shape, now continue heating alloys silk until more than glass transition temperature, shape memory polymer composite material returns back to original shape, and after cooling, the shape of blade 2 is replied completely.Under same rotating speed, the difformity of screw propeller corresponds to different propulsive forces and propulsion coefficient, the program can realize the change of screw propeller propulsive force, and under different rotating speeds, keep screw propeller all to have relatively higher propulsion coefficient and larger fltting speed and propulsive force, have under maximum speed of revolution and compare the higher fltting speed of similar screw propeller and larger propulsive force, when boats and ships are in cruising condition, screw blade configuration can be made to be deformed into the most effective shape of propeller works, thus fuel saving, when propeller load is overweight, easily part load can be laid down by changing its camber, while protection screw propeller damages less, also the impact failure brought because of the mode of operation of conversion marine main engine is avoided, the high degree of flexibility of this screw propeller and multi-operation mode will improve its Combination property greatly, it is made more to be adapted to complicated marine environment.
Claims (7)
1. the marine propeller of deformable blade, it is characterized in that: it comprises propeller hub (1) and multiple blade (2), blade (2) comprises blade body (3) and blade skeleton (4), blade skeleton (4) comprises skeleton girder (5), first row B alloy wire (6) and second row B alloy wire (7), first row B alloy wire (6) and second row B alloy wire (7) are symmetricly set on the both sides of skeleton girder (5), blade skeleton (4) is arranged on blade body (3), multiple blade body (3) is radially arranged on propeller hub (1).
2. the marine propeller of deformable blade according to claim 1, is characterized in that: described skeleton girder (5) is hollow body.
3. the marine propeller of deformable blade according to claim 1, it is characterized in that: described first row B alloy wire (6) is arranged by the B alloy wire side by side parallel that multiple length is different and forms, distance between upper adjacent two B alloy wires of first row B alloy wire (6) is 1/48 ~ 1/10 of screw propeller tip circular diameter, second row B alloy wire (7) is arranged by the B alloy wire side by side parallel that multiple length is different and forms, and the distance between upper adjacent two B alloy wires of second row B alloy wire (7) is 1/48 ~ 1/10 of screw propeller tip circular diameter.
4. the marine propeller of deformable blade according to claim 3, it is characterized in that: the two poles of the earth of power supply are accessed at the two ends of the upper each B alloy wire of described first row B alloy wire (6) respectively by wire, the two poles of the earth of power supply are accessed at the two ends of the upper each B alloy wire of second row B alloy wire (7) respectively by wire, and two wires of the upper each B alloy wire of first row B alloy wire (6) and two wires of the upper each B alloy wire of second row B alloy wire (7) are arranged in the hollow body of skeleton girder (5).
5. the marine propeller of deformable blade according to claim 2, it is characterized in that: described skeleton girder (5) is the skeleton girder be made up of light-weight metal or composite material, the length of described skeleton girder (5) is 1/3 ~ 1/2 of screw propeller tip circular diameter.
6. the marine propeller of deformable blade according to claim 1, it is characterized in that: described first row B alloy wire (6) is the first row B alloy wire be made up of two-way shape memory alloys material, described second row B alloy wire (7) is the second row B alloy wire be made up of dual shape memory alloys material.
7. the marine propeller of deformable blade according to claim 1, is characterized in that: described blade body (3) is the blade body be made up of the composite material of Shape-based interpolation memory polymer matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510890943.0A CN105416538B (en) | 2015-12-07 | 2015-12-07 | The marine propeller of deformable blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510890943.0A CN105416538B (en) | 2015-12-07 | 2015-12-07 | The marine propeller of deformable blade |
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| CN105416538A true CN105416538A (en) | 2016-03-23 |
| CN105416538B CN105416538B (en) | 2017-10-03 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105966582A (en) * | 2016-05-25 | 2016-09-28 | 哈尔滨工业大学 | Ship transformable propeller based on bidirectional shape memory polymer composite propeller blades |
| CN107418077A (en) * | 2017-07-28 | 2017-12-01 | 安徽卓尔航空科技有限公司 | One kind injection frame construction composite propeller |
| CN107618644A (en) * | 2017-08-22 | 2018-01-23 | 哈尔滨工程大学 | A kind of deformable propeller |
| WO2018094575A1 (en) * | 2016-11-22 | 2018-05-31 | 王金宏 | Variable-pitch propeller device |
| CN112477140A (en) * | 2020-10-15 | 2021-03-12 | 中国科学院微电子研究所 | Electrical heating 4D printing assembly and printing method |
| CN112682334A (en) * | 2020-12-11 | 2021-04-20 | 浙江工业大学 | Reversible fan based on bistable-state blades and manufacturing method |
| CN115195977A (en) * | 2022-07-11 | 2022-10-18 | 中国船舶重工集团公司第七一九研究所 | 4D prints flexible screw |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105966582A (en) * | 2016-05-25 | 2016-09-28 | 哈尔滨工业大学 | Ship transformable propeller based on bidirectional shape memory polymer composite propeller blades |
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| CN107418077A (en) * | 2017-07-28 | 2017-12-01 | 安徽卓尔航空科技有限公司 | One kind injection frame construction composite propeller |
| CN107618644A (en) * | 2017-08-22 | 2018-01-23 | 哈尔滨工程大学 | A kind of deformable propeller |
| CN112477140A (en) * | 2020-10-15 | 2021-03-12 | 中国科学院微电子研究所 | Electrical heating 4D printing assembly and printing method |
| CN112682334A (en) * | 2020-12-11 | 2021-04-20 | 浙江工业大学 | Reversible fan based on bistable-state blades and manufacturing method |
| CN115195977A (en) * | 2022-07-11 | 2022-10-18 | 中国船舶重工集团公司第七一九研究所 | 4D prints flexible screw |
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| CN105416538B (en) | 2017-10-03 |
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