CN208306965U - A kind of combined blade tip end plate hull propeller - Google Patents
A kind of combined blade tip end plate hull propeller Download PDFInfo
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- CN208306965U CN208306965U CN201820776693.7U CN201820776693U CN208306965U CN 208306965 U CN208306965 U CN 208306965U CN 201820776693 U CN201820776693 U CN 201820776693U CN 208306965 U CN208306965 U CN 208306965U
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- propeller
- blade
- end plate
- blade tip
- tip end
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Abstract
The utility model relates to a kind of combined blade tip end plate hull propellers, including the propeller being mounted on shaft, the blade of the propeller is equipped with blade tip end plate in the end of blade tip pressure face, and the blade tip end plate is imitative fin shape and is integrally formed smooth transition with blade blade tip end.Preferably, using the blade form of CLT propeller, blade tip and blade tip end plate using the shape of the Kappel tip fin propeller of blade 0.875R or more.The utility model can not only reduce or eliminate influence of the tip whirlpool in propeller progradation, improve the propulsive efficiency of propeller, and the load of screw blade tip end portion resistance area end and blade and propeller boss junction can be alleviated, greatly improve the energy saving and propulsion capability of propeller；The utility model can be realized without shaking into water state, be reduced as far as vibrating and being mitigated or eliminated tip whirlpool phenomenon.
Description
Technical field
The utility model relates to a kind of combined blade tip end plate hull propellers, specifically, design a kind of based on decompression
The hull propeller of the combined blade tip end plate of partial pressure, belongs to hull propeller drag reduction structures field technical field.
Background technique
Under normal circumstances, it with the rotation of propeller, will be generated in the water at rear and propeller direction of rotation phase one
The vortex of cause, it is this to be vortexed the propulsion that not can help to hull, on the contrary, can but reduce the propeller for being equivalent to part energy
Propulsive efficiency.Therefore, such vortex is reduced, so that it may increase considerable degree of propeller propulsive efficiency.HSVA is also indicated that, is reduced
The influent stream of propeller can obtain optimal push away and subtract and wake factor, to improve efficiency.From wing theory it is found that being filled on wing
End plate can limit the free vortex of wing tip, increase lift resistance ratio.In the same way, end plate or winglet are installed at tip of propeller blade, it can
It prevents or the whirlpool that disappears generates, and have a fixed load at blade tip, the radial load of blade can be made, which to be distributed, becomes more uniform, subtracts
Few radial induction is reported lost property to the authorities, and propeller efficiency is improved.It is later experiments have shown that, add the small of the limited dimensions of other than ring type in blade tip
The propeller of the wing or end plate has the characteristics that spacious water is high-efficient, optimum diameter is small, small without tip whirlpool (or tip whirlpool very little), noise.
What imitative fin technology mainly improved is the capacitation coefficient and the torque coefficient for reducing propeller propulsion that propeller promotes.
Its drag reduction mechanism is to develop the imitative fin end plate for being vertically mounted on tip of propeller blade end.It is mounted on blade suction surface one side
Vertical end plate, which can reduce, laterally to stream, and increases blade section circular rector, to improve lift or efficiency.And imitative fin end plate itself is in stream
It is linear, there are excellent promotion performance and dynamic characteristics, resistance when underwater rotation can be reduced, is by the way that end plate form is transformed
Imitative fin shape can be further improved energy-saving effect.
But all there is apparent problem and shortage from theory to practical application for blade tip end plate technology at this stage.In spiral shell
The blade tip end of rotation paddle adds the basic goal of end plate to be to eliminate propeller tip whirlpool, and for the propeller in no tip whirlpool, have
The problem of one essence: vertical additional end plate or winglet can cause high viscosity resistance, if this is vibrating propeller
When, since the high viscosity resistance of end plate can bring very big energy loss, theoretically require at the blade tip end plate of propeller
Yu Wuzhen enters water state, is reduced as far as vibrating.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of combined blade tip end plate hull propellers, can
It realizes that the blade tip end plate of propeller blade is in without shaking into water state, it is existing to be reduced as far as vibrating and be mitigated or eliminated tip whirlpool
As.
To solve the above-mentioned problems, the technical solution adopted in the utility model is as follows:
A kind of combined blade tip end plate hull propeller, including the propeller being mounted on shaft,
The blade of the propeller is equipped with blade tip end plate in the end of blade tip pressure face, and the blade tip end plate is imitative fin shape
Shape is simultaneously integrally formed smooth transition with blade blade tip end.
Further, the body shape of the blade uses the blade form of CLT propeller, the blade tip of blade and blade tip end
Plate uses the shape of Kappel tip fin propeller.
Further, the blade tip of the blade and blade tip end plate use the Kappel tip fin spiral of blade 0.875R or more
Paddle.
Further, the blade tip end plate shape is the pectoral fin shape or caudal-fin models of shark.
Further, it is 87 ° that the fin of the blade tip end plate, which turns over angle,.
Further, the propeller pitch angle of the blade tip end plate is 170 degree.
Further, the length that the blade tip end plate stretches out is 6-10mm, and the height of stretching is 2-4mm.
Further, the length that the blade tip end plate stretches out is 9mm, and the height of stretching is 3mm.
Compared with prior art, the utility model has the beneficial effects that: the propeller of accessory lobe top end plate can not only subtract
Less or influence of the tip whirlpool in propeller progradation is eliminated, improves the propulsive efficiency of propeller, and spiral can be alleviated
The load of blade tip end portion resistance area end and blade and propeller boss junction.The alleviation of top end load so that propeller because of tip load
A possibility that destruction, greatly reduces, and also relatively reduces the demand to main engine power, disappears to eliminate unnecessary energy
Consumption, greatly improves the energy saving and propulsion capability of propeller；Blade tip end plate is using imitative fin shape, by the trip for imitating fish
It is dynamic, to improve operational efficiency；The imitative fin shape of blade tip end plate and with blade blade tip end be integrally formed smooth transition set
Meter, can be realized without shaking into water state, is reduced as far as vibrating and being mitigated or eliminated tip whirlpool phenomenon.
The body shape of blade uses the blade form of CLT propeller, and the blade tip and blade tip end plate of blade use
The shape of Kappel tip fin propeller.In no vacuole, CLT blade acts on the pressure on hull and is lower than conventional paddle；CLT
Paddle exists without tip whirlpool, will not generate the vacuole as caused by tip whirlpool on blade, CLT paddle acts on ship with the fluctuation pressure of lower magnitude
On body.Based on the blade form of CLT propeller, in conjunction with the blade tip advantage of Kappel tip fin propeller propeller, by changing
Energy-saving effect can be further increased by making its end plate form.The blade of CLT propeller is wide to be gradually reduced by end plate to hub cap, end plate
Positioned at blade tip pressure face, blade form just matches with the flow tube shape of propeller disk, to reduce the viscous drag of end plate,
Increase the water flow into people's propeller, increased airscrew thrust.Leaf and blade tip boundary element make at blade tip before,
Latter two pressure field separates, and the maximum pressure difference of blade is kept, to improve propulsive efficiency.
The blade tip and blade tip end plate of blade use the Kappel tip fin propeller of blade 0.875R or more, the tip of blade
Portion is arc-shaped shape to front curve, and blade gently generates most effective additional lift towards suction surface one side bending energy.Model test
Show, using the Kappel tip fin propeller of blade 0.875R or more, the more conventional paddle propeller power of propeller power saves 3%~
5%.
Blade tip end plate shape uses the pectoral fin shape or caudal-fin models of shark, and the tail fin and pectoral fin of shark are during travelling
There are excellent promotion performance and dynamic characteristics, the resistance to move about under water can be reduced and greatly reduction propeller exists
Resistance and vibration in progradation is to destruction caused by propeller itself, so that the drag overall of full ship can finally be reduced
3%.
It uses fin to turn over angle as 87 ° of blade tip end plate, is verified by theory and practice, select 87 ° of fin shape end plate.
Because propulsive efficiency is directly proportional to torque, the energy-saving efficiency of propeller also obtains maximum value at this time.
The propeller pitch angle of the blade tip end plate is 170 degree, i.e. fin section chord length and Plane of rotation imitates shark chest at 170 degree
The capacitation coefficient of the blade of fin or tail fin reaches extreme value, efficiency highest simultaneously.
The length that the blade tip end plate stretches out is 6-10mm, and the height of stretching is 2-4mm, and this combined value can be substantially
Degree improves the thrust of propeller.When the length that blade tip end plate stretches out is 9mm, and the height of stretching is 3mm, the thrust of propeller has
Optimal solution.Equally, propeller efficiency at this time also reaches maximum value.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of combined one embodiment of blade tip end plate hull propeller of the utility model.
Fig. 2 is the revolved sectional view along Fig. 1 at A-A.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It is said according to following
Bright, the purpose of this utility model, technical solution and advantage will be apparent from.It should be noted that described embodiment is this
The preferred embodiment of utility model, instead of all the embodiments.
Referring to figs. 1 and 2, a kind of combined blade tip end plate hull propeller, including the spiral being mounted on shaft 2
The blade 10 of paddle 1, the propeller 1 is equipped with blade tip end plate 4 in the end of blade tip pressure face, and the blade tip end plate 4 is imitative fin
Shape is simultaneously integrally formed smooth transition with blade blade tip end.
The body shape of the blade 10 uses the blade form of CLT propeller, the blade tip and blade tip end plate 4 of blade 10
Using the shape of Kappel tip fin propeller.Using the blade form of CLT propeller, the characteristics of having fully absorbed CLT propeller,
CLT propeller cooperates different ship types, and fuel oil saving is significantly more than 10%, especially low to the speed of a ship or plane, propeller load weight fertilizer
Large ship, effect are more preferable.It is found by ship trial, using CLT paddle, " Cherokee " of the more conventional paddle of fuel consumption
Number reduce by 12%.Under certain design power, 0.63Kn is increased using the speed of a ship or plane of CLT paddle.Since ship trial is in ballast shape
It carries out under state, is exposed the surface using the sternpost top of CLT propeller, hull does not vibrate, and propeller does not generate vibration yet.
The turning test comparison result of real ship shows the tactical diameter equipped with CLT propeller hull than the revolution using conventional propeller
Diameter is small by 40% or more.
Preferably, the Kappel tip fin of the blade tip and blade tip end plate 4 of the blade 10 using blade 0.875R or more
Propeller.
4 shape of blade tip end plate is preferably adopted as the pectoral fin shape or caudal-fin models of shark.Preferably, the blade tip
It is 87 ° that the fin of end plate 4, which turns over angle,.
Preferably, the propeller pitch angle of the blade tip end plate 4 is 170 degree.
Preferably, the length that the blade tip end plate 4 stretches out is 6-10mm, the height of stretching is 2-4mm.When the blade tip
The length that end plate 4 stretches out is 9mm, and the height of stretching is that the propeller efficiency of 3mm constantly reaches maximum value.
The utility model has the beneficial effects that: the propeller of accessory lobe top end plate can not only reduce or eliminate tip whirlpool in spiral shell
The influence in paddle progradation is revolved, improves the propulsive efficiency of propeller, and screw blade tip end portion resistance area can be alleviated
The load of end and blade and propeller boss junction.The alleviation of top end load so that propeller because of a possibility that tip load is destroyed significantly
It reduces, also relatively reduces the demand to main engine power, to eliminate unnecessary energy consumption, greatly improve spiral
The energy saving and propulsion capability of paddle；Blade tip end plate is using imitative fin shape, by imitating the travelling of fish, to improve operational efficiency；
The imitative fin shape of blade tip end plate and the design that smooth transition is integrally formed with blade blade tip end, can be realized without shaking into water
State is reduced as far as vibrating and being mitigated or eliminated tip whirlpool phenomenon.
The body shape of blade uses the blade form of CLT propeller, and the blade tip and blade tip end plate of blade use
The shape of Kappel tip fin propeller.In no vacuole, CLT blade acts on the pressure on hull and is lower than conventional paddle；CLT
Paddle exists without tip whirlpool, will not generate the vacuole as caused by tip whirlpool on blade, CLT paddle acts on ship with the fluctuation pressure of lower magnitude
On body.Based on the blade form of CLT propeller, in conjunction with the blade tip advantage of Kappel tip fin propeller propeller, by changing
Energy-saving effect can be further increased by making its end plate form.The blade of CLT propeller is wide to be gradually reduced by end plate to hub cap, end plate
Positioned at blade tip pressure face, blade form just matches with the flow tube shape of propeller disk, to reduce the viscous drag of end plate,
Increase the water flow into people's propeller, increased airscrew thrust.Leaf and blade tip boundary element make at blade tip before,
Latter two pressure field separates, and the maximum pressure difference of blade is kept, to improve propulsive efficiency.
The blade tip and blade tip end plate of blade use the Kappel tip fin propeller of blade 0.875R or more, the tip of blade
Portion is arc-shaped shape to front curve, and blade gently generates most effective additional lift towards suction surface one side bending energy.Model test
Show, using the Kappel tip fin propeller of blade 0.875R or more, the more conventional paddle propeller power of propeller power saves 3%~
5%.
Blade tip end plate shape uses the pectoral fin shape or caudal-fin models of shark, and the tail fin and pectoral fin of shark are during travelling
There are excellent promotion performance and dynamic characteristics, the resistance to move about under water can be reduced and greatly reduction propeller exists
Resistance and vibration in progradation is to destruction caused by propeller itself, so that the drag overall of full ship can finally be reduced
3%.
It uses fin to turn over angle as 87 ° of blade tip end plate, is verified by theory and practice, select 87 ° of fin shape end plate.
Because propulsive efficiency is directly proportional to torque, the energy-saving efficiency of propeller also obtains maximum value at this time.
The propeller pitch angle of the blade tip end plate is 170 degree, i.e. fin section chord length and Plane of rotation imitates shark chest at 170 degree
The capacitation coefficient of the blade of fin or tail fin reaches extreme value, efficiency highest simultaneously.
The length that the blade tip end plate stretches out is 6-10mm, and the height of stretching is 2-4mm, and this combined value can be substantially
Degree improves the thrust of propeller.When the length that blade tip end plate stretches out is 9mm, and the height of stretching is 3mm, the thrust of propeller has
Optimal solution.Equally, propeller efficiency at this time also reaches maximum value.
The utility model is further analyzed below, propeller blade body shape uses the blade of CLT propeller
Shape, Kappel tip fin propeller of the blade tip and blade tip end plate 4 of blade 10 using blade 0.875R or more, blade tip end plate 4
Shape is using the pectoral fin shape or caudal-fin models for imitating shark.
Using MP687 propeller as research model, the design parameter of propeller and end plate is as shown in table 3.1 and table 3.2.
3.1 MP687 propeller parameter of table
3.2 blade tip end plate parameter of table
According to analog result of the model propeller in uniform incoming flow, it can be appreciated that when not adding end plate originally, propeller
The thrust itself generated is 123.87N, and plus after fin-shaped end plate, the thrust of propeller increases to 243.94N, airscrew thrust
It obviously increases, to reduce the resistance of propeller, improves whole propulsive efficiency.
The above is only the description explanation of the preferred embodiment in the utility model, not to scope of protection of the utility model
Restriction, it is clear that anyone skilled in the art based on the above embodiment, can readily occur in replacement or variation to obtain
Other embodiments, these, which should all cover, is within the protection scope of the utility model.
Claims (8)
1. a kind of combined blade tip end plate hull propeller, including the propeller (1) being mounted on shaft (2), it is characterised in that:
The blade (10) of the propeller (1) is equipped with blade tip end plate (4) in the end of blade tip pressure face, the blade tip end plate (4)
Smooth transition is integrally formed for imitative fin shape and with blade blade tip end.
2. combined blade tip end plate hull propeller according to claim 1, it is characterised in that:
The body shape of the blade (10) uses the blade form of CLT propeller, the blade tip and blade tip end plate of blade (10)
(4) shape of Kappel tip fin propeller is used.
3. combined blade tip end plate hull propeller according to claim 2, it is characterised in that:
The blade tip and blade tip end plate (4) of the blade (10) use the Kappel tip fin propeller of blade 0.875R or more.
4. combined blade tip end plate hull propeller according to claim 2 or 3, it is characterised in that:
Blade tip end plate (4) shape is the pectoral fin shape or caudal-fin models of shark.
5. combined blade tip end plate hull propeller according to claim 4, it is characterised in that:
It is 87 ° that the fin of the blade tip end plate (4), which turns over angle,.
6. combined blade tip end plate hull propeller according to claim 4, it is characterised in that:
The propeller pitch angle of the blade tip end plate (4) is 170 degree.
7. combined blade tip end plate hull propeller according to claim 4, it is characterised in that:
The length that the blade tip end plate (4) is stretched out is 6-10mm, and the height of stretching is 2-4mm.
8. combined blade tip end plate hull propeller according to claim 6, it is characterised in that:
The length that the blade tip end plate (4) is stretched out is 9mm, and the height of stretching is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820776693.7U CN208306965U (en) | 2018-05-23 | 2018-05-23 | A kind of combined blade tip end plate hull propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820776693.7U CN208306965U (en) | 2018-05-23 | 2018-05-23 | A kind of combined blade tip end plate hull propeller |
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| Publication Number | Publication Date |
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| CN208306965U true CN208306965U (en) | 2019-01-01 |
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ID=64716324
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| CN201820776693.7U Active CN208306965U (en) | 2018-05-23 | 2018-05-23 | A kind of combined blade tip end plate hull propeller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622354A (en) * | 2018-05-23 | 2018-10-09 | 上海交通大学 | A kind of combined blade tip end plate hull propeller |
| CN110539866A (en) * | 2019-07-26 | 2019-12-06 | 北京精密机电控制设备研究所 | combined propeller |
-
2018
- 2018-05-23 CN CN201820776693.7U patent/CN208306965U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622354A (en) * | 2018-05-23 | 2018-10-09 | 上海交通大学 | A kind of combined blade tip end plate hull propeller |
| CN110539866A (en) * | 2019-07-26 | 2019-12-06 | 北京精密机电控制设备研究所 | combined propeller |
| CN110539866B (en) * | 2019-07-26 | 2023-11-10 | 北京精密机电控制设备研究所 | Combined propeller |
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