CN208931619U - A kind of asymmetric rudder ball device - Google Patents
A kind of asymmetric rudder ball device Download PDFInfo
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- CN208931619U CN208931619U CN201821189989.5U CN201821189989U CN208931619U CN 208931619 U CN208931619 U CN 208931619U CN 201821189989 U CN201821189989 U CN 201821189989U CN 208931619 U CN208931619 U CN 208931619U
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- rudder ball
- propeller
- rudder
- axle center
- ball
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Abstract
The utility model discloses a kind of asymmetric rudder ball devices, including ontology, the ontology is towards being connected with rudder ball on the end face of propeller, the rotation center of the axle center of the rudder ball and the propeller is on the same line, left side edge of the axle center apart from the rudder ball is a, and right side edge of the axle center apart from the rudder ball is c, and top edge and bottom edge of the axle center apart from the rudder ball are b, wherein a, b and c are each unequal, and a, b, c are all larger than zero.The area that rudder ball is formed on the left of coordinate system and the area that rudder ball is formed on the right side of coordinate system are unequal, form unsymmetric structure, rudder spherical structure is due to using unsymmetric structure, it is more preferable with the matching in flow field after paddle, it is more effective to the formation and development that inhibit hub whirlpool, it can be further reduced the energy loss of propeller, reach better energy-saving effect.
Description
Technical field
The utility model relates to shipborne equipment technical field more particularly to a kind of asymmetric rudder ball devices.
Background technique
Environment and Energy situation problem have become the focus of global concern.Main load of the ship as commodity logistics transportation
Body consumes a large amount of non-renewable energy resources amplification quantity polluted gas and greenhouse gases side by side in shipping process, for this case,
International Maritime Organization (IMO) is proposed Ship Design energy efficiency indexes (EEDI), enforces in 2013, therefore, ship water
The development of power energy-saving technology is extremely urgent, and improving propulsive efficiency is one of marine energy-saving technology prior development direction.
With higher Ship Propeling efficiency, and energy conservation and environmental protection as far as possible is pursued, rudder ball is as a kind of simple and effective
Energy saver, extensively by industry favor.General rudder ball is that an axial symmetry sphere is installed on rudder guide lug, axis and propeller
Axis is located at rear propeller in sustained height, and effect is the hub whirlpool inhibited in screw current, and reaching reduces hub vortex strength
Degree, increases the purpose of propeller propulsive efficiency.
From propeller theory, for propeller during axial rotation motion, propeller shank and propeller hub end can be backward
Stronger vortex system, i.e. propeller boss whirlpool are released in square flow field, the energy in hub whirlpool comes from propeller rotary motion, and is dissipated in ship tail
In stream, energy loss is caused.For this purpose, the axial symmetrical rudder ball device of rudder guide lug installation after propeller, can effectively inhibit
The energy loss of propeller is reduced in hub whirlpool, reaches energy-efficient purpose.
However, wake flow is bilateral symmetry after ship caused by hull from ship hydrodynamics point of theory, and by propeller
After paddle caused by rotary motion wake flow when on be it is axially symmetric, two kinds intercouple, so that ship rear screw shaft wake flow
Axial symmetry weakens, meanwhile, thus hub whirlpool is also deviated with propeller axis, axial symmetry is also by a degree of
It destroys, therefore, using conventional axial symmetry type rudder ball and flow field after paddle and mismatches, so that the energy-saving effect of rudder ball is not sent out sufficiently
It waves.
Therefore it provides a kind of asymmetric rudder ball device, simple to structure, so that more preferably, there is the matching in flow field after paddle
Effect reduces the energy loss of propeller, to have better energy-saving effect, it is urgently to be resolved just to become those skilled in the art
Problem.
Utility model content
It is simple to structure the purpose of the utility model is to provide a kind of asymmetric rudder ball device, so that flow field after paddle
Matching more preferably, effectively reduces the energy loss of propeller, to have better energy-saving effect.
To achieve the goals above, the utility model provides a kind of asymmetric rudder ball device, including ontology, the ontology court
Be connected with rudder ball on the end face of propeller, the rotation center of the axle center of the rudder ball and the propeller on the same line,
Left side edge of the axle center apart from the rudder ball is a, and right side edge of the axle center apart from the rudder ball is c, the axle center
Top edge and bottom edge apart from the rudder ball are b, and wherein a, b and c are each unequal, and a, b, c are all larger than zero.
Preferably, the radius of the Plane of rotation of the propeller is r, and a is any value in 0.05~0.5r.
Preferably, b is any value in 0.05~0.5r.
Preferably, c is any value in 0.05~0.5r.
Preferably, the rudder ball towards the end face of the propeller be plane or convex globoidal.
Preferably, the outer surface of rudder ball is streamlined structure.
Preferably, the area of end face of the rudder ball towards the propeller is less than the affixed of the rudder ball and the ontology
The area of end face.
Asymmetric rudder ball device provided by the utility model, including ontology, the ontology is towards on the end face of propeller
Be connected with rudder ball, the rotation center of the axle center of the rudder ball and the propeller on the same line, described in the axle center distance
The left side edge of rudder ball is a, and right side edge of the axle center apart from the rudder ball is c, top of the axle center apart from the rudder ball
Side edge and bottom edge are b, and wherein a, b and c are each unequal, and a, b, c are all larger than zero.In above structure, ontology and ship
Body connection, in the affixed rudder ball in the edge of ontology towards propeller, the axis of the rudder ball and the rotary shaft of propeller are in always
On line, the axle center of rudder ball and the rotation center of propeller are on the straight line at this time, and the vertical rectilinear direction cuts open rudder ball
Face, establishes two-dimensional coordinate system at axle center, the section of rudder ball respectively in coordinate system x-axis and y-axis intersect, wherein having with x-axis
It is respectively a (axle center is at a distance from the left side edge of rudder ball) and c at a distance from two horizontal axis intersection points and origin there are two horizontal axis intersection point
(axle center is at a distance from the right side edge of rudder ball), with y-axis tool there are two longitudinal axis intersection point, two longitudinal axis intersection points are equal at a distance from origin
For b (axle center respectively at a distance from the top edge of rudder ball and the distance of bottom edge).
Due to a ≠ c, the area that the area that rudder ball is formed on the left of coordinate system is formed on the right side of coordinate system with rudder ball not phase
Deng, that is, forming unsymmetric structure, propeller rotary work, propeller shank and propeller hub end rearward can release hub whirlpool in flow field,
Due to the influence of hull stern wake, direction and the propeller axis in hub whirlpool shift, and occur asymmetry in the axial direction,
Formation and hair of the above-mentioned rudder spherical structure since the matching using flow field after unsymmetric structure, with paddle is more preferable, to hub whirlpool is inhibited
Exhibition is more effective, can be further reduced the energy loss of propeller, reach better energy-saving effect.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of specific embodiment of asymmetric rudder ball device provided by the utility model；
Fig. 2 is the structural schematic diagram (rudder ball towards the end face of propeller be plane) of asymmetric rudder ball device shown in Fig. 1；
Fig. 3 be asymmetric rudder ball device shown in Fig. 1 structural schematic diagram (rudder ball towards the end face of the propeller be convex arc
Face)；
Fig. 4 is the structural schematic diagram (fore to stern direction) of asymmetric rudder ball device shown in Fig. 1；
Fig. 5 is the enlarged view at asymmetric rudder ball device A shown in Fig. 4.
Description of symbols:
1 is hull, and 2 be ontology, and 3 be rudder ball, and 4 be propeller.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
Fig. 1 and Fig. 5 are please referred to, Fig. 1 is a kind of specific embodiment party of asymmetric rudder ball device provided by the utility model
The schematic diagram of formula；Fig. 2 is that (end face of rudder ball towards propeller is flat for the structural schematic diagram of asymmetric rudder ball device shown in Fig. 1
Face)；Fig. 3 is the structural schematic diagram (rudder ball towards the end face of the propeller be convex globoidal) of asymmetric rudder ball device shown in Fig. 1；
Fig. 4 is the structural schematic diagram (fore to stern direction) of asymmetric rudder ball device shown in Fig. 1；Fig. 5 is asymmetric rudder ball shown in Fig. 4
Enlarged view at device A.
In a specific embodiment, asymmetric rudder ball device provided by the utility model, including ontology 2, it is described
Towards rudder ball 3 is connected on the end face of propeller 4, the rotation center of the axle center of the rudder ball 3 and the propeller 4 exists ontology 2
On same straight line, left side edge of the axle center apart from the rudder ball 3 is a, right side edge of the axle center apart from the rudder ball 3
For c, top edge and bottom edge of the axle center apart from the rudder ball 3 are b, and wherein a, b and c are each unequal, and a, b, c
It is all larger than zero.In above structure, ontology 2 is connect with hull 1, in the affixed rudder ball 3 in the edge of ontology 2 towards propeller 4, the rudder ball
3 axis and the rotary shaft of propeller 4 are on same straight line, and the rotation center of the axle center of rudder ball 3 and propeller 4 is located at this time
In on the straight line, the vertical rectilinear direction does section to rudder ball 3, and two-dimensional coordinate system, the section difference of rudder ball 3 are established at axle center
With in coordinate system x-axis and y-axis intersect, wherein with x-axis tool there are two horizontal axis intersection point, two horizontal axis intersection points are at a distance from origin point
Not Wei a (axle center is at a distance from the left side edge of rudder ball 3) and c (axle center is at a distance from the right side edge of rudder ball 3), have with y-axis
Two longitudinal axis intersection points, be at a distance from two longitudinal axis intersection points and origin b (axle center respectively at a distance from the top edge of rudder ball 3 and
The distance of bottom edge).
Due to a ≠ c, the area that the area that rudder ball 3 is formed on the left of coordinate system is formed on the right side of coordinate system with rudder ball 3 not phase
Deng, that is, forming unsymmetric structure, 4 rotary work of propeller, propeller shank and propeller hub end rearward can release hub whirlpool in flow field,
Due to the influence of 1 stern wake of hull, direction and 4 axis of propeller in hub whirlpool shift, and occur in the axial direction asymmetric
Property, formation of above-mentioned 3 structure of rudder ball since the matching using flow field after unsymmetric structure, with paddle is more preferable, to hub whirlpool is inhibited
It is more effective with development, it can be further reduced the energy loss of propeller 4, reach better energy-saving effect.
It is further understood that, the radius of the Plane of rotation of the propeller 4 is r, and a is any in 0.05~0.5r
Value.Since current 1 line style of hull is relatively more skinny on the quarter, the high wake area of stern nominal wake field more concentrates on propeller
In 4 radiuses, so that the flowing of 4 inside radius of stern propeller is more uneven, paddle back hub whirlpool is exacerbated to a certain extent not
Symmetry, by the way that in above structure, distance of the axle center of rudder ball 3 apart from 3 left side edge of rudder ball is less than 4 Plane of rotation of propeller
Radius, i.e. a < r, a are in any value in 0.05~0.5r range, can more match flow field after paddle, give full play to rudder ball 3
Energy-saving effect.
Further, b is any value in 0.05~0.5r.Since current 1 line style of hull is relatively more skinny on the quarter,
The high wake area of stern nominal wake field more concentrates in 4 radius of propeller, so that the flowing of 4 inside radius of stern propeller is more
Unevenly, the asymmetry for exacerbating paddle back hub whirlpool to a certain extent, by the way that in above structure, the axle center of rudder ball 3 is apart from rudder
The distance of 3 left side edge of ball is less than the radius of 4 Plane of rotation of propeller, i.e. b < r, b are in any in 0.05~0.5r range
Value, can more match flow field after paddle, give full play to the energy-saving effect of rudder ball 3.
Further, c is any value in 0.05~0.5r.Since current 1 line style of hull is relatively more skinny on the quarter,
The high wake area of stern nominal wake field more concentrates in 4 radius of propeller, so that the flowing of 4 inside radius of stern propeller is more
Unevenly, the asymmetry for exacerbating paddle back hub whirlpool to a certain extent, by the way that in above structure, the axle center of rudder ball 3 is apart from rudder
The distance of 3 left side edge of ball is less than the radius of 4 Plane of rotation of propeller, i.e. c < r, c are in any in 0.05~0.5r range
Value, can more match flow field after paddle, give full play to the energy-saving effect of rudder ball 3.
Specifically understand, the rudder ball 3 towards the end face of the propeller 4 be plane or convex globoidal.Pass through above-mentioned knot
Structure can effectively inhibit hub whirlpool, reduce the energy loss of propeller 4, while can more match flow field after paddle, give full play to rudder
The energy-saving effect of ball 3.
Specifically, the outer surface of rudder ball 3 is streamlined structure.The outer surface of above-mentioned rudder ball 3 is to point out rudder ball 3 and ontology
2 affixed end faces and rudder ball 3 are streamlined by the way that the surface of rudder ball 3 to be arranged to towards the end face of propeller 4, can effectively drop
The resistance that low row is sailed, so that energy consumption reduction of navigating, while can effectively inhibit hub whirlpool, the energy loss of propeller 4 is reduced, thus
It enables to rudder ball 3 more to match flow field after paddle, gives full play to the energy-saving effect of rudder ball 3.
Specifically, the area of the rudder ball 3 towards the end face of the propeller 4 be less than the rudder ball 3 and the ontology 2 it
The area of affixed end face.Above structure can be effectively reduced the resistance of traveling, so that energy consumption reduction of navigating, while can effectively press down
Hub whirlpool processed, the energy loss for reducing propeller 4 give full play to rudder ball 3 so that rudder ball 3 more matches flow field after paddle
Energy-saving effect.
It should be understood that although multiple element, portion can be described using term first, second, third, etc. in the text
Part, region, layer and/or section still these component, assembly units, region, layer and/or are limited by these terms than Duan Buying.
These terms can only be used to distinguish a component, assembly unit, region, layer or section with another region, layer or section.Unless
Context is it is manifestly intended that when otherwise the term and other numerical terms of such as " first ", " second " etc use in the text
Sequence or order is not implied that.
The various embodiments described above are only preferred embodiments of the present invention, in the art, all to be based on this reality
With the changes and improvements in new technique scheme, should not exclude except the protection scope of the utility model.
Claims (7)
1. a kind of asymmetric rudder ball device, including ontology, the ontology is towards being connected with rudder ball, feature on the end face of propeller
It is, on the same line, the axle center is apart from the rudder ball for the rotation center of the axle center of the rudder ball and the propeller
Left side edge is a, and right side edge of the axle center apart from the rudder ball is c, top edge of the axle center apart from the rudder ball
It is b with bottom edge, wherein a, b and c are each unequal, and a, b, c are all larger than zero.
2. asymmetric rudder ball device according to claim 1, which is characterized in that the radius of the Plane of rotation of the propeller
It is any value in 0.05~0.5r for r, a.
3. asymmetric rudder ball device according to claim 2, which is characterized in that b is any value in 0.05~0.5r.
4. asymmetric rudder ball device according to claim 3, which is characterized in that c is any value in 0.05~0.5r.
5. asymmetric rudder ball device according to claim 4, which is characterized in that the rudder ball is towards the end of the propeller
Face is plane or convex globoidal.
6. asymmetric rudder ball device according to claim 5, which is characterized in that the outer surface of rudder ball is streamlined structure.
7. asymmetric rudder ball device according to claim 6, which is characterized in that the rudder ball is towards the end of the propeller
The area in face is less than the area of the affixed end face of the rudder ball and the ontology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821189989.5U CN208931619U (en) | 2018-07-26 | 2018-07-26 | A kind of asymmetric rudder ball device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821189989.5U CN208931619U (en) | 2018-07-26 | 2018-07-26 | A kind of asymmetric rudder ball device |
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| Publication Number | Publication Date |
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| CN208931619U true CN208931619U (en) | 2019-06-04 |
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| CN201821189989.5U Expired - Fee Related CN208931619U (en) | 2018-07-26 | 2018-07-26 | A kind of asymmetric rudder ball device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115052810A (en) * | 2020-01-30 | 2022-09-13 | 现代重工业株式会社 | Steering device and ship with same |
-
2018
- 2018-07-26 CN CN201821189989.5U patent/CN208931619U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115052810A (en) * | 2020-01-30 | 2022-09-13 | 现代重工业株式会社 | Steering device and ship with same |
| CN115052810B (en) * | 2020-01-30 | 2024-06-07 | 现代重工业株式会社 | Steering device and ship with same |
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Granted publication date: 20190604 |
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