CN203612187U - Propeller for ship - Google Patents
Propeller for ship Download PDFInfo
- Publication number
- CN203612187U CN203612187U CN201320636943.4U CN201320636943U CN203612187U CN 203612187 U CN203612187 U CN 203612187U CN 201320636943 U CN201320636943 U CN 201320636943U CN 203612187 U CN203612187 U CN 203612187U
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- blade
- propeller
- described blade
- marine propeller
- propeller according
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Abstract
The utility model discloses a propeller for a ship. The propeller comprises a paddle, wherein a blade tip of the paddle is bent towards the ship head and extends to form a guide edge; when the propeller rotates, partial paddles are twisted, the direction of the radial water flow can be smoothly changed through the arc smooth transitional structure on the bent position of the blade tip and the guide edge so as to flow in t he axial direction, so that partial kinetic energy of the water flow in the tangential direction can be converted to the kinetic energy in the axial direction, and the thrust force of the propeller can be effectively increased.
Description
Technical field
The utility model relates to a kind of sub-assembly of hull structure, particularly a kind of marine propeller.
Background technology
Screw propeller is the vitals of boats and ships, and the application force of ship screw propeller and current and antagonistic force promote to advance.Screw propeller rotates the kinetic energy producing and is mainly used in the axial and tangential speed of current generation that makes, but current are useless at the tangential kinetic energy obtaining to boats and ships.Prove after deliberation, about 21% left/right rotation of kinetic energy that screw propeller produces changes current at tangential kinetic energy.
In prior art, address the above problem a kind of use mozzle of general method, current are become to axial kinetic energy at tangential part kinetic transformation.Although but this method is feasible in theory, but seldom there is ship to adopt in practice, one of reason is that the efficiency of transformation of energy is low, the current of discharging from blade flow to tube wall with certain angle, with after tube wall collision damage part energy, reflect again, quite a few energy is lost in this course, second is exactly that mozzle is huge, design, installation, maintenance inconvenience, be also easy to together with other floating marine thing kinks.
Therefore, need to improve existing screw propeller, make screw propeller in the time rotating, what part blade twist can be level and smooth to current radially changes the direction of a stream of water, and to axial diffluence, thereby effectively increases the thrust of screw propeller.
Utility model content
In view of this, the utility model provides a kind of marine propeller, and when screw propeller is in the time rotating, what part blade twist can be level and smooth to current radially changes the direction of a stream of water, and to axial diffluence, thereby effectively increases the thrust of screw propeller.
Marine propeller of the present utility model, comprises blade, the bending extend to form diversion edges forward of the blade tip portion of described blade.
Further, described blade tip portion to form the bending part of described diversion edges be that circular arc seamlessly transits structure.
Further, described diversion edges is 90 ° of vertical settings with described blade tip portion.
Further, described blade is non-linear rake torsion to lagging edge skew back and to blade back.
Further, described blade is 15 °-21 ° to the angle of lagging edge skew back.
Further, described blade is reference position that non-linear rake reverses and is positioned at the radially stage casing of described blade to blade back.
Further, the blade root of described blade is provided with the anti-hole of degrading.
The beneficial effects of the utility model: marine propeller of the present utility model, the direction bending extend to form diversion edges forward of blade tip portion, and bending part is that circular arc seamlessly transits structure, when screw propeller is in the time rotating, part blade twist can seamlessly transit structure and level and smooth the changing the direction of a stream of water of diversion edges by the circular arc of blade tip portion bending part to current radially, to axial diffluence, make current become axial kinetic energy at tangential part kinetic transformation, thereby effectively increase the thrust of screw propeller.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is the utility model structural representation;
Fig. 2 is Fig. 1 lateral plan.
The specific embodiment
Fig. 1 is the utility model structural representation, and Fig. 2 is Fig. 1 lateral plan, as shown in the figure: the marine propeller of the present embodiment, comprises blade 1, the bending extend to form diversion edges 3 forward of the blade tip portion 2 of described blade 1; Marine propeller of the present utility model also comprises propeller hub 7 attaching partss such as grade, and propeller hub 7 is provided with connecting bore 8, keyway 9, alleviates groove 10 etc., belongs to prior art, does not repeat them here; Consistent with the fore-and-aft direction of hull before and after the utility model indication.
In the present embodiment, the bending part that described blade tip portion 2 forms described diversion edges 3 is that circular arc seamlessly transits structure; Be that bending part is smooth camber, can make like this current of radial motion change the direction of a stream of water smoothly by smooth circular arc, conversion efficiency is higher, and axially kinetic energy promotes higher.
In the present embodiment, described diversion edges 3 is 90 ° of vertical settings with described blade tip portion 2; Guarantee best water conservancy diversion effect, certainly, diversion edges and blade tip portion also can adopt other angle setting, and institute's parameter that obtains is still higher than prior art.
In the present embodiment, described blade 1 is non-linear rake torsion to lagging edge 4 skew backs and to blade back; Be that blade forms recurvation twisting structure, there is good spiral camber, hydrodynamic characteristic can adapt to preferably ship and advance time, when running, make ship operate steadily, there is good propelling thrust, simultaneously, due to inclination and the rake of blade, suppress tip whirlpool and reduced the horizontal Secondary Flow between blade, effectively having reduced running noise, having there is good environment protecting.
In the present embodiment, described blade 1 is 15 °-21 ° to the angle of lagging edge 4 skew backs; In the present embodiment, adopt 18 °, in the time selecting 15 ° and 21 °, with 18 ° there is no significant difference, exceed after this scope, effect decreases, but still parameters exceeds prior art.
In the present embodiment, described blade 1 is reference position that non-linear rake reverses and is positioned at the radially stage casing of described blade 1 to blade back; Be beneficial to the propelling thrust that guarantees blade blade root and overall blade.
In the present embodiment, the blade root 5 of described blade 1 is provided with the anti-hole 6 of degrading; This anti-hole of degrading forms by blade blade face one current to blade back, these current form a slice cavity earlier in blade back exit, stably cover downstream and on blade back, form cavity pad along this anti-hole exits that degrades, the cavity that blade is produced passes through thereon, and directly do not contact with blade back, therefore in the time crumbling and fall, its shock pressure acts on this cavity pad, and avoids acting on blade back.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (7)
1. a marine propeller, comprises blade, it is characterized in that: the bending extend to form diversion edges forward of the blade tip portion of described blade.
2. marine propeller according to claim 1, is characterized in that: the bending part that described blade tip portion forms described diversion edges is that circular arc seamlessly transits structure.
3. marine propeller according to claim 2, is characterized in that: described diversion edges is 90 ° of vertical settings with described blade tip portion.
4. marine propeller according to claim 3, is characterized in that: described blade is non-linear rake torsion to lagging edge skew back and to blade back.
5. marine propeller according to claim 4, is characterized in that: described blade is 15 °-21 ° to the angle of lagging edge skew back.
6. marine propeller according to claim 5, is characterized in that: described blade is reference position that non-linear rake reverses and is positioned at the radially stage casing of described blade to blade back.
7. marine propeller according to claim 6, is characterized in that: the blade root of described blade is provided with the anti-hole of degrading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636943.4U CN203612187U (en) | 2013-10-15 | 2013-10-15 | Propeller for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636943.4U CN203612187U (en) | 2013-10-15 | 2013-10-15 | Propeller for ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203612187U true CN203612187U (en) | 2014-05-28 |
Family
ID=50764847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320636943.4U Expired - Fee Related CN203612187U (en) | 2013-10-15 | 2013-10-15 | Propeller for ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203612187U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105947160A (en) * | 2016-05-05 | 2016-09-21 | 哈尔滨工程大学 | Propeller for reducing stress at positions of blade roots and decreasing tip vortexes |
| CN106672184A (en) * | 2015-11-11 | 2017-05-17 | 赵春来 | Ship propeller with large-angle longitudinal inclined structure |
| CN107867382A (en) * | 2017-10-16 | 2018-04-03 | 重庆交通大学 | A kind of propeller set |
| CN110329466A (en) * | 2019-07-26 | 2019-10-15 | 李贵臣 | A kind of increasing speed of train with low noise device for submarine |
-
2013
- 2013-10-15 CN CN201320636943.4U patent/CN203612187U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672184A (en) * | 2015-11-11 | 2017-05-17 | 赵春来 | Ship propeller with large-angle longitudinal inclined structure |
| CN105947160A (en) * | 2016-05-05 | 2016-09-21 | 哈尔滨工程大学 | Propeller for reducing stress at positions of blade roots and decreasing tip vortexes |
| CN105947160B (en) * | 2016-05-05 | 2018-07-24 | 哈尔滨工程大学 | It is a kind of to reduce stress at blade root and reduce the propeller in tip whirlpool |
| CN107867382A (en) * | 2017-10-16 | 2018-04-03 | 重庆交通大学 | A kind of propeller set |
| CN110329466A (en) * | 2019-07-26 | 2019-10-15 | 李贵臣 | A kind of increasing speed of train with low noise device for submarine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20141015 |
|
| EXPY | Termination of patent right or utility model |