CN109760812A - A kind of shield and propeller fixed structure - Google Patents
A kind of shield and propeller fixed structure Download PDFInfo
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- CN109760812A CN109760812A CN201811507454.2A CN201811507454A CN109760812A CN 109760812 A CN109760812 A CN 109760812A CN 201811507454 A CN201811507454 A CN 201811507454A CN 109760812 A CN109760812 A CN 109760812A
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- cyclic annular
- radiant panel
- annular wing
- wing plate
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Abstract
The invention discloses a kind of shield and propeller fixed structures, shield is mounted on the pod of propeller, it include: the first cyclic annular wing plate, the second cyclic annular wing plate, second cyclic annular wing plate diameter less than the diameter of the first cyclic annular wing plate and the center of circle it is identical, the diameter of the second cyclic annular wing plate is identical as at a distance from the second cyclic annular wing plate to the first ring-type wing plate；At least one radiant panel, one end is fixed on the first cyclic annular wing plate and the second cyclic annular wing plate, the other end is fixed on pod, second support plate and the first support plate are symmetrically positioned in the lower section of propeller, and one end of first one end of support plate, the second support plate is fixed on the first cyclic annular wing plate and the second cyclic annular wing plate, the other end is fixed on propeller；At least one radiant panel, the first support plate and the second support plate form symmetrical structure, and using the embodiment of the present invention, solving the problems, such as that barrier is inhaled into from the water inlet of propeller in the prior art makes propeller be damaged.
Description
Technical field
The present invention relates to propeller technical field of improvement more particularly to a kind of shields and propeller fixed structure.
Background technique
Large ship stop from u-turn in pool, the dynamic positioning of ocean platform, port, entering and leaving port and harbour berth between
The manipulation tasks such as mobile generally require to assist to complete by tugboat.The quality of tugboat operation performance directly determines that can harbour
Timely and convenient, high-quality and safety service is provided.Since tugboat is during navigation or operation, propeller may be sucked
Sundries, especially in the limited space in harbour, there is largely either statically or dynamically barrier, such as waste plastic product weave
Object, the wood of suspension, tire etc., and then lead to the damage of propeller and power drive system, it on the one hand will increase operation process
In unplanned stop maintenance cost, cause the voyage schedule to be delayed, increase operation cost.On the other hand serious to may cause safe thing
Therefore.So no matter considering from operation cost or safety, installing shield for propeller is an effective method.
It is current studies have shown that propeller is wound by sundries such as fishing net or tendrils if ship is during navigation
When, the torque of propeller will will increase, to cause the increase of engine load, when excess load is worked, very
Stop shafting or propeller it is possible that can suppress, so that propeller shafting and blade damage, deformation, generate shafting sometimes and shake noise
Become larger, when damaging propeller under the impact high based on revolving speed, leading to the stoppage in transit of ship occur in shafting.Barrier mainly from
The water inlet of propeller is inhaled into, it is therefore desirable to and protective device is installed in propeller water inlet, sundries is stopped to enter pod,
Protect propeller not damaged.
Summary of the invention
The purpose of the present invention is to provide a kind of shield and propeller fixed structures, it is intended to solve obstacle in the prior art
Object is mainly inhaled into the problem of making propeller be damaged from the water inlet of propeller.
To achieve the above object, the present invention provides a kind of shield, is mounted on the pod of propeller, comprising:
First cyclic annular wing plate；
Second cyclic annular wing plate, diameter are less than the diameter of the described first cyclic annular wing plate, and with the described first cyclic annular wing plate center of circle
Identical, the diameter of the described second cyclic annular wing plate is identical at a distance from the described second cyclic annular wing plate to the described first cyclic annular wing plate；
At least one radiant panel, one end are fixed on the described first cyclic annular wing plate and the second cyclic annular wing plate, the other end
It is fixed on the pod, and the structure of at least one radiant panel is identical, quantity is even number and spacing is identical；
First support plate；
Second support plate is symmetrically positioned in the lower section of the propeller, and first support plate with first support plate
One end, second support plate one end be fixed on the described first cyclic annular wing plate and the second cyclic annular wing plate, the other end
It is fixed on the propeller；
At least one described radiant panel, first support plate and the second support plate form symmetrical structure.
Preferably, at least one described radiant panel includes: the first radiant panel, the second radiant panel, third radiant panel, the 4th spoke
Penetrate plate；
First radiant panel, second radiant panel, the third radiant panel, the 4th radiant panel are located at described anti-
The upper half of shield, and the angle between two neighboring radiant panel is 45 °.
Preferably, the described first cyclic annular wing plate and the angle of direction of flow are 10 °.
Preferably, the described second cyclic annular wing plate and the angle of direction of flow are 7 °.
Further, the described first cyclic annular wing plate, the second cyclic annular wing plate cross section be NASA0015 aerofoil profile.
Preferably, each radiant panel is tiger's jaw shape structure, each of at least one described radiant panel radiant panel
Upper outer edges where straight line and water inlet angular separation be 25 °, the external margin of each radiant panel and water inlet direction folder
Angle is 110 °.
Preferably, the angle of first support plate and second support plate is 45 °.
Preferably, multiple cushion blocks are provided on the pod, pass through the multiple cushion block and at least one described radiation
Plate, first support plate, second support plate are connected.
A kind of propeller fixed structure, comprising: pod, described in any item shields；
The pod is located at the outside of the shield, and propeller is mounted on the center point of the pod, and passes through
Symmetrical at least two connecting plate is fixed on the pod.
Therefore, using the embodiment of the present invention shield and propeller fixed structure, what is had is had the beneficial effect that:
When the sundries of direction of flow reaches pod water inlet, shield will stop sundries, avoid enter into and lead
Stream cover, protects propeller.The structure type of shield, by water inlet water inlet Line Integral isolate, can by entirety
Area reduces, and biggish object will be intercepted when entering pod.
At the same time, shield can also play the role of stopping tendril, the damage caused by tendril is wound on propeller
Be it is very big, the torque of propeller will will increase, so that the increase of engine load is caused, when excess load is worked
It waits, it is more likely that can suppress and stop shafting or propeller, so that propeller shafting and blade damage, deformation, so can preferably protect
Propeller makes it normally work, and guarantees its working efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of shield, pod and propeller connection.
Fig. 2 is the structural schematic diagram of shield.
Fig. 3 is angle schematic diagram between adjacent radiation plate.
Fig. 4 is the first cyclic annular wing plate and direction of flow angle schematic diagram.
Fig. 5 is the second cyclic annular wing plate and direction of flow angle schematic diagram.
Fig. 6 is the aerofoil section figure of the first cyclic annular wing plate and the second cyclic annular wing plate.
Fig. 7 is NASA0015 schematic cross-section.
Fig. 8 is the first schematic diagram of calculation result.
Fig. 9 a is second of schematic diagram of calculation result.
Fig. 9 b is the third schematic diagram of calculation result.
Figure 10 is the 4th kind of schematic diagram of calculation result.
Figure 11 is the 5th kind of schematic diagram of calculation result.
Figure 12 a is the 6th kind of schematic diagram of calculation result.
Figure 12 b is the 7th kind of schematic diagram of calculation result.
Figure 13 is the third schematic diagram of calculation result.
Figure 14 is the concrete structure schematic diagram of the first radiant panel.
Figure 15 is angle schematic diagram between the first support plate, the second support plate.
Figure 16 is the structural schematic diagram of the first support plate.
Figure 17 is that the place of radiant panel, support plate and pod connection increases cushion block schematic diagram.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
Please refer to Fig. 1-17, it should be noted that diagram provided in the present embodiment only illustrates this hair in a schematic way
Bright basic conception, only shown in schema then with related component in the present invention rather than component count when according to actual implementation,
Shape and size are drawn, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its component
Being laid out kenel may also be increasingly complex.
As shown in Figure 1, 2, the embodiment of the invention provides a kind of shields, are mounted on the pod 3 of propeller 2, packet
It includes: the first cyclic annular wing plate 1-5；Second cyclic annular wing plate 1-6, diameter are less than the diameter of the described first cyclic annular wing plate 1-5, and with it is described
The first ring-type center of circle wing plate 1-5 is identical, and the diameter and the second ring-type wing plate 1-6 of the described second cyclic annular wing plate 1-6 is described in
The distance of first cyclic annular wing plate 1-5 is identical；At least one radiant panel, one end are fixed on the first ring-type wing plate 1-5 and described
On second cyclic annular wing plate 1-6, the other end is fixed on the pod 3, and the structure of at least one radiant panel is identical, number
Amount is even number and spacing is identical；First support plate 1-7；Second support plate 1-8 is symmetrically positioned in the first support plate 1-7
The lower section of the propeller, and one end of one end of the first support plate 1-7, the second support plate 1-8 be fixed on it is described
On first ring-type wing plate 1-5 and the second cyclic annular wing plate 1-6, the other end is fixed on the propeller；It is described at least one
Radiant panel, the first support plate 1-7 and the second support plate 1-8 form symmetrical structure.
Further, at least one described radiant panel includes 4 radiant panels, is the first radiant panel 1-1, the second radiation respectively
Plate 1-2, third radiant panel 1-3, the 4th radiant panel 1-4.
Angle between two adjacent radiant panels is 45 °, the first radiant panel 1-1 as shown in Figure 3, the second radiant panel 1-
Angle between 2 is 45 °, in addition, the angle between the second radiant panel 1-2, third radiant panel 1-3 is 45 °, third radiant panel 1-
3, the angle of the 4th radiant panel 1-4 is 45 °, and multiple radiant panels are located at the upper half of shield, and two neighboring radiant panel it
Between angle be 45 °.
As shown in Figure 1, shield 1 is mounted on the water inlet of pod 3, effect is that sundries is stopped to enter pod 3,
Protect propeller and drive apparatus, the first radiant panel 1-1, the second radiant panel 1-2, third radiant panel 1-3, the 4th radiant panel 1-4
Angle between adjacent is 45 °, primarily serves the effect of mean allocation water inlet water inlet area, is made secondly, support can also be played
With.The first ring-type wing plate 1-5 and second ring-type wing plate 1-6 by 3 water inlet of pod intake area mean allocation,
Guarantee the uniformity of its influent stream.This design structure is simple, more safe and reliable under the premise of guaranteeing its structural strength, and
It is easily installed and dismantles, provided conveniently for later maintenance.
As shown in figure 4, the first ring-type wing plate 1-5 and the angle of direction of flow are 10 °, as shown, described second
Cyclic annular wing plate 1-6 and the angle of direction of flow are 7 °, reduce fluid resistance by this design.
Interface as shown in FIG. 6 is the cross section of the first cyclic annular wing plate 1-5, the second cyclic annular wing plate 1-6, the shape at interface
Shape is NASA0015 aerofoil profile.
The present invention is based on hydrodynamics to carry out CFD emulation to shield, introduces in NASA0015 aerofoil profile to cyclic annular wing plate, and
With direction of flow in the angle of α 1, α 2, being computed makes drag minimization such as table 1.
Table 1
| Angle | Drag overall | Resistance increment rate |
| α1=0 ° of α2=15 ° | 31699.9N | 5.57% |
| α1=5 ° of α2=5 ° | 31235.5N | 4.02% |
| α1=7 ° of α2=10 ° | 30132.4N | 0.35% |
| α1=7 ° of α2=5 ° | 30583.3N | 1.85% |
| α1=10 ° of α2=10 ° | 30055.1N | 0.09% |
| α1=10 ° of α2=15 ° | 30842.2N | 2.27% |
| α1=10 ° of α2=17 ° | 31432.5N | 4.68% |
Aerofoil profile: in aerodynamics, aerofoil profile is generally understood as two-dimensional wing, the i.e. constant infinite span machine of section shape
The wing.The representative configuration of low speed and subsonic speed aerofoil profile, its front end is round and smooth, and rear end is pointed at shape；Cusp is known as rear afterwards；In aerofoil profile away from
The farthest point of rear is known as leading edge；The straight line of connection front and rear edge is known as wing chord, and length is known as chord length.Make a system inside aerofoil profile
Column and the tangent inscribed circle of upper lower aerofoil, the line of Zhu Yuanxin are known as the middle camber line of aerofoil profile, and wherein the diameter of maximum inscribed circle claims
For the thickness of aerofoil profile, the maximum distance between middle camber line and wing chord is known as camber；Up-front radius of curvature is known as leading-edge radius.It is super
The leading edge of velocity of sound aerofoil profile is also likely to be point.The relative thickness of aerofoil profile and opposite camber are respectively defined as thickness and camber to chord length
The ratio between, the aerofoil profile that camber is zero is known as symmetrical airfoil, and wherein camber line is overlapped with wing chord.
When aerofoil profile is relative to air movement, airfoil surface will receive the active force of air-flow, and resultant force is in aerofoil profile movement side
To or direction of flow on component be resistance suffered by aerofoil profile, the component perpendicular to above-mentioned direction is the lifting force of aerofoil profile.These
Active force is known as pitching moment to the torque of leading edge (or to away from 1/4 chord length point of leading edge).In low speed and subsonic speed, also
A kind of aerofoil profile is called laminar flow airfoil, and more rearward, the laminar flow section in boundary layer is longer, thus frictional resistance is smaller for its maximum gauge.
Under transonic speed situation, there is a kind of aerofoil profile to be called supercritical airfoil, its upper surface is relatively flat, general on aerofoil only to generate pressure
Contracting wave and dilatational wave, or have weak shock, thus wave resistance is smaller.
During Airfoil Design, aerofoil profile flow dynamic characteristic, such as resistance, lift are usually only focused on, and for ship
And catic water line, airfoil wake flow quality are equally particularly significant.The drag by lift of aerofoil profile is smaller, and hydrodynamic performance is better, but same
When tail flow field quality may will be deteriorated, therefore two targets are conflicting, how to obtain two targets all relatively
Excellent aerofoil profile.Therefore, the embodiment of the present invention uses NACA0015 aerofoil profile, and the quality of resistance and tail flow field is moderate.Drag reduction
Small, delay vacuole generation is advantageous.The angle of attack is between 10-15 degree, such as Fig. 7.
Part that radiant panel is connect with pod 3 is stuck in it on pod 3 using the form of ' tiger's jaw ', with power
The connected part selection of mechanism is not passed through, and is on the one hand considered to reduce resistance problem, is on the other hand considered installation question.By leading
Enter in STAR-CCM+ and calculate, choose the α 1 under different angle, α 2 calculated, and the drag overall value under different angle is compared, and naked
Propeller Resistance Value 30025.3N is compared, and chooses optimal solution.Shown in the following Fig. 8-Figure 13 of calculated result.
It as shown in figure 14, is tiger's jaw shape structure, the upper outer edges of the first radiant panel 1-1 by taking the first radiant panel 1-1 as an example
Straight line and water (flow) direction angle where 1-1-2 are 110 °, the external margin of each radiant panel and 3 access section of pod
1-1-3 and water (flow) direction angle are 25 °.
As shown in Figure 15 and Figure 16, the angle of the first support plate 1-7 and the second support plate 1-8 are 45 °.It is described
First support plate 1-7 and the second support plate 1-8 mainly play a supportive role and are stuck on propeller, and total keeps symmetrical
Property, guarantee symmetrical above and below, bilateral symmetry.Support plate primarily serves supporting role, the first bayonet 1-7-1 as shown in figure 16 and the
Two bayonet 1-7-2, the first bayonet 1-7-1 are stuck on propeller, and the second bayonet 1-7-2 is that " tiger's jaw " form is connected to the first ring-type
On wing plate 1-5, the second cyclic annular wing plate 1-6.
Further, as shown in figure 17, multiple cushion blocks are provided on pod 3, by the multiple cushion block and it is described extremely
A few radiant panel, the first support plate 1-7, the second support plate 1-8 are connected.A kind of specific implementation side of the invention
In formula, increase pad in the place that at least multiple radiant panels, the first support plate 1-7, the second support plate 1-8 are in contact with pod 3
Block, cushion block are welded on pod 3, with bolt that shield and pod 3 is fixed, are more convenient the maintenance in later period in this way and are torn open
It unloads.
In a kind of specific embodiment of the invention, a kind of propeller fixed structure is provided, comprising: pod 3, any one institute
The shield stated；The pod 3 is located at the outside of the shield, and propeller 2 is mounted on the center point of the pod 3,
And it is fixed on the pod 3 by symmetrical at least two connecting plate.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of shield, which is characterized in that be mounted on the pod (3) of propeller (2), comprising:
First cyclic annular wing plate (1-5)；
Second cyclic annular wing plate (1-6), diameter are less than the diameter of the described first cyclic annular wing plate (1-5), and with the described first cyclic annular wing
The center of circle plate (1-5) is identical, and the diameter of the described second cyclic annular wing plate (1-6) and the second cyclic annular wing plate (1-6) arrive described first
The distance of cyclic annular wing plate (1-5) is identical；
At least one radiant panel, one end are fixed on the described first cyclic annular wing plate (1-5) and the second cyclic annular wing plate (1-6),
The other end is fixed on the pod (3), and the structure of at least one radiant panel is identical, and quantity is even number and spacing
It is identical；
First support plate (1-7)；
Second support plate (1-8) is symmetrically positioned in the lower section of the propeller (2), and described with first support plate (1-7)
One end of one support plate (1-7), second support plate (1-8) one end be fixed on the described first cyclic annular wing plate (1-5) and institute
It states on the second cyclic annular wing plate (1-6), the other end is fixed on the propeller (2)；
At least one described radiant panel, first support plate (1-7) and the second support plate (1-8) form symmetrical structure.
2. a kind of shield according to claim 1, which is characterized in that at least one described radiant panel includes: the first spoke
Penetrate plate (1-1), the second radiant panel (1-2), third radiant panel (1-3), the 4th radiant panel (1-4)；
First radiant panel (1-1), second radiant panel (1-2), the third radiant panel (1-3), the 4th radiation
Plate (1-4) is located at the upper half of the shield, and the angle between two neighboring radiant panel is 45 °.
3. a kind of shield according to claim 1, which is characterized in that the described first cyclic annular wing plate (1-5) and incoming flow side
To angle be 10 °.
4. a kind of shield according to claim 1, which is characterized in that the described second cyclic annular wing plate (1-6) and incoming flow side
To angle be 7 °.
5. a kind of shield according to claim 1-4, which is characterized in that the described first cyclic annular wing plate (1-5),
The cross section of described second cyclic annular wing plate (1-6) is NASA0015 aerofoil profile.
6. a kind of shield according to claim 5, which is characterized in that each radiant panel is tiger's jaw shape structure, institute
Straight line and the water inlet angular separation stated where the upper outer edges of each of at least one radiant panel radiant panel are 25 °, often
The external margin of one radiant panel and water inlet angular separation are 110 °.
7. a kind of shield according to claim 1, which is characterized in that first support plate (1-7) and described second
The angle of support plate (1-8) is 45 °.
8. a kind of shield according to claim 1, which is characterized in that multiple cushion blocks are provided on the pod (3),
Pass through the multiple cushion block and at least one described radiant panel, first support plate (1-7), second support plate (1-8)
It is connected.
9. a kind of propeller fixed structure characterized by comprising pod (3), claim 1-8 are described in any item anti-
Shield；
The pod (3) is located at the outside of the shield, and propeller (2) is mounted on the center point of the pod (3), and
It is fixed on the pod (3) by symmetrical at least two connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507454.2A CN109760812A (en) | 2018-12-11 | 2018-12-11 | A kind of shield and propeller fixed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507454.2A CN109760812A (en) | 2018-12-11 | 2018-12-11 | A kind of shield and propeller fixed structure |
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| Publication Number | Publication Date |
|---|---|
| CN109760812A true CN109760812A (en) | 2019-05-17 |
Family
ID=66451410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811507454.2A Pending CN109760812A (en) | 2018-12-11 | 2018-12-11 | A kind of shield and propeller fixed structure |
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| Country | Link |
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| CN (1) | CN109760812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112758288A (en) * | 2019-11-05 | 2021-05-07 | 天津深之蓝海洋设备科技有限公司 | Be applied to underwater kuppe end cover, underwater propulsor and underwater mobile device |
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| CN1625505A (en) * | 2002-01-29 | 2005-06-08 | 乌尔里希·普吕斯 | Holding device for the protecting cage of an outboard engine |
| CN101282874A (en) * | 2005-07-05 | 2008-10-08 | 船用推进技术公司 | Multiple nozzle venturi system for watercraft |
| US20130157531A1 (en) * | 2011-12-14 | 2013-06-20 | Atlas Elektronik Gmbh | Protective Housing For A Propeller Of A Submarine Vehicle, Connection System With A Connecting Cable And The Use of Such Protective Housing For Incorporating A Connecting Cable |
| CN103342162A (en) * | 2013-07-01 | 2013-10-09 | 中国船舶科学研究中心上海分部 | Front half guide wheel |
| CN106143822A (en) * | 2016-07-07 | 2016-11-23 | 深圳市瑞脉科技有限公司 | Robot is advanced under intelligent water |
| CN206243426U (en) * | 2016-12-02 | 2017-06-13 | 长兴大河造船有限公司 | A kind of marine propeller |
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2018
- 2018-12-11 CN CN201811507454.2A patent/CN109760812A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5928042A (en) * | 1998-03-26 | 1999-07-27 | Glenn F. Mattina | Propeller guard |
| CN1625505A (en) * | 2002-01-29 | 2005-06-08 | 乌尔里希·普吕斯 | Holding device for the protecting cage of an outboard engine |
| CN101282874A (en) * | 2005-07-05 | 2008-10-08 | 船用推进技术公司 | Multiple nozzle venturi system for watercraft |
| CN101282874B (en) * | 2005-07-05 | 2010-12-08 | 船用推进技术公司 | Multiple nozzle venturi system for watercraft |
| US20130157531A1 (en) * | 2011-12-14 | 2013-06-20 | Atlas Elektronik Gmbh | Protective Housing For A Propeller Of A Submarine Vehicle, Connection System With A Connecting Cable And The Use of Such Protective Housing For Incorporating A Connecting Cable |
| CN103342162A (en) * | 2013-07-01 | 2013-10-09 | 中国船舶科学研究中心上海分部 | Front half guide wheel |
| CN106143822A (en) * | 2016-07-07 | 2016-11-23 | 深圳市瑞脉科技有限公司 | Robot is advanced under intelligent water |
| CN206243426U (en) * | 2016-12-02 | 2017-06-13 | 长兴大河造船有限公司 | A kind of marine propeller |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112758288A (en) * | 2019-11-05 | 2021-05-07 | 天津深之蓝海洋设备科技有限公司 | Be applied to underwater kuppe end cover, underwater propulsor and underwater mobile device |
| WO2021088508A1 (en) * | 2019-11-05 | 2021-05-14 | 天津深之蓝海洋设备科技有限公司 | Flow guide hood end cover for underwater application, underwater propeller, and underwater moving device |
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