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CN102951255B - The method for reducing vessel orientation resistance of rudder - Google Patents

The method for reducing vessel orientation resistance of rudder Download PDF

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Publication number
CN102951255B
CN102951255B CN201110235849.3A CN201110235849A CN102951255B CN 102951255 B CN102951255 B CN 102951255B CN 201110235849 A CN201110235849 A CN 201110235849A CN 102951255 B CN102951255 B CN 102951255B
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CN
China
Prior art keywords
gas
rudder
vessel orientation
gas bubbles
resistance
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Expired - Fee Related
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CN201110235849.3A
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Chinese (zh)
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CN102951255A (en
Inventor
林瑞麟
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Individual
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Individual
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00Maritime or waterways transport
    • Y02T70/10Measures concerning design or construction of watercraft hulls

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Abstract

A kind of method for reducing vessel orientation resistance of rudder, espespecially a kind of method for importing gas bubbles using negative pressure to reduce vessel orientation rudder resistance in water, comprising:A ship is provided, precalculated position is provided with propeller necessary to hull is advanced, and located at the vessel orientation rudder of rear propeller;The leading edge of vessel orientation rudder is provided with gas bubbles releasing device;A gas leading-in device, including an at least air guide body are provided, there is an air inlet air guide body upper end, and hypomere portion is connected to the gas introduction port of gas bubbles releasing device;When being advanced using hull, the upstream face of the high speed water jet impact vessel orientation rudder that propeller is produced disengages mouth and forms negative pressure to suck gas using bernoulli principle in gas bubbles;Gas is disengaged after mouth disengages and mix with current via air guide body inflow gas introducing port via gas bubbles, forms numerous gas bubbles.The present invention can reduce resistance of the vessel orientation rudder to the high-velocity flow produced by propeller, reach effect of energy-conservation.

Description

The method for reducing vessel orientation resistance of rudder
Technical field
It is espespecially a kind of to be imported using negative pressure the present invention relates to the method that one kind reduces vessel orientation rudder (Rudder) resistance Gas bubbles, make vessel orientation rudder reduction resistance method.
Background technology
Ship has the attached suspension member or hanger hung over outside hull in addition to hull, still, for example:Ship 10 shown in Fig. 1, its Including a hull 11, and one is hubbed at hull 11 and the propeller 13 positioned at water line below 12, and ship 10 shown in this figure Suspension member in the rear of propeller 13 is a vessel orientation rudder 14, for control direction.
Shown in Fig. 2, the current produced by the propeller 13 of above-mentioned ship 10 flow through the schematic diagram of vessel orientation rudder 14, due to Vessel orientation rudder 14 is in the high-velocity flow downstream of propeller 13, can increase the resistance navigated, but the vessel orientation rudder 14 but It is the indispensable suspension member of this type ship 10.Therefore the resistance that vessel orientation rudder 14 is produced in the high-velocity flow of propeller 13, It is unavoidable.
But, in the prior art, solve the above problems a little, mostly it is the principle for not influenceing structural strength in the rudder for ship Under, it is only capable of design path type in shape or is surface-treated to reduce the resistance of vessel orientation rudder.So, these method reality On can reduce the effect of resistance, be not still have to be hoisted, exactly incur a considerable or great expense;Therefore how to reduce ship with low cost The resistance of rudder, and then the consumption of fuel oil is reduced, it has been ship manufactory, so the academic research unit class to be solved Topic.
The content of the invention
Technical problem underlying to be solved by this invention is the drawbacks described above for overcoming prior art to exist, and provides one The method for reducing vessel orientation resistance of rudder is planted, it must not change any former design, it is only necessary to set gas in former vessel orientation rudder leading edge Body bubble releasing device, the upstream face of produced high speed water jet impact vessel orientation rudder of being advanced using hull is formed negative according to this Press to import gas bubbles, using the gas bubbles for importing, partly to isolate the contact of current and vessel orientation rudder, you can reduce Vessel orientation rudder reaches effect of energy-conservation to the resistance of the high-velocity flow produced by propeller.
The technical solution adopted for the present invention to solve the technical problems is:
The method that one kind reduces vessel orientation rudder (Rudder) resistance, it is espespecially a kind of to import gas bubbles using negative pressure to drop The method of low vessel orientation rudder resistance in water, it is characterised in that it is included:
A) ship is provided, its precalculated position is provided with propeller necessary to hull is advanced, and located at the rear propeller Vessel orientation rudder;
B) leading edge in foregoing vessel orientation rudder is provided with gas bubbles releasing device, and it utilizes a hollow component to be constituted The upstream face of the vessel orientation rudder is arranged on, at least one gas introduction port is which is provided with, and both sides are provided with several gas bubbles Disengage mouth;
C) gas leading-in device is provided, it includes an at least air guide body, the air guide body upper end has an air inlet, And hypomere portion is connected to the gas introduction port of the gas bubbles releasing device;
When d) being advanced using the hull, the high-velocity flow (F) produced by propeller impacts the upstream face of the vessel orientation rudder, Mouth is disengaged using bernoulli principle (Bernoulli ' s Principle) in the gas bubbles to form negative pressure to suck gas;
E) These gases flow into the gas introduction port via the air guide body, and via the gas bubbles disengage mouth disengage with After current mixing, numerous gas bubbles are formed;
F) borrowed come the contact friction between isolated part current and the vessel orientation rudder using the foregoing gas bubbles disengaged To reduce resistance of the vessel orientation rudder to the high-velocity flow produced by propeller.
The method for reducing vessel orientation rudder (Rudder) resistance, wherein, the air inlet of the air guide body upper end is located at In the hull or higher than in water line.
The method for reducing vessel orientation rudder (Rudder) resistance, wherein, the gas leading-in device is further with auxiliary Help mode to import gas, including exhaust gas utilization, with the low-pressure gas such as engine exhaust or steamturbine tail gas, send into the air guide body It is interior.
The method for reducing vessel orientation rudder (Rudder) resistance, is further provided with a pressue device, and it is by the hull Air compressor machine, air blower, engine, steamturbine or turbocharger any of which are constituted, and this is fed gas into pressuring method In wireway body.
The beneficial effects of the invention are as follows it must not change any former design, it is only necessary to set gas in former vessel orientation rudder leading edge Body bubble releasing device, the upstream face of produced high speed water jet impact vessel orientation rudder of being advanced using hull is formed negative according to this Press to import gas bubbles, using the gas bubbles for importing, partly to isolate the contact of current and vessel orientation rudder, you can reduce Vessel orientation rudder reaches effect of energy-conservation to the resistance of the high-velocity flow produced by propeller.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is existing vessel rudder schematic diagram.
Fig. 2 is the schematic diagram that existing current flow through vessel orientation rudder.
Fig. 3 is that gas bubbles of the invention produce schematic diagram.
Fig. 4 is gas leading-in device schematic diagram of the invention.
Fig. 5 is 5-5 post-show cross-section maps shown in Fig. 4.
Fig. 6 is the signified main construction enlarged diagram in 6 positions shown in Fig. 5, is used to show that the gas bubbles are produced in negative pressure Raw schematic diagram.
Fig. 7 is the part isometric schematic diagram of gas bubbles releasing device shown in Fig. 6.
Label declaration in figure:
10 ships
11 hulls
12 water lines
13 propellers
131 power engines
14 vessel orientation rudders
20 gas bubbles releasing devices
21 hollow components
211 gas introduction ports
212 gas bubbles disengage mouth
30 gas leading-in devices
31 air guide bodys
32 air inlets
33 control valves
34 pressue devices
50 gas bubbles
F high-velocity flows
Specific embodiment
Preferred embodiment is provided below for above-mentioned technical characteristic of the invention.But, vessel orientation rudder pattern is various, and shape And construction is all incomplete same, therefore only it is illustrated with preferred embodiment, but its technological means used is then identical, holds not Repeat one by one.
First, refer to shown in Fig. 3~Fig. 6, be wherein to disclose the reduction of gas bubbles 50 rudder for ship resistance of the invention shown in Fig. 3 The schematic diagram of power, to be made comparisons with Fig. 2 existing vessel orientation rudder 14 skin resistances;Fig. 4, Fig. 5 then disclose the present invention one Preferable possible embodiments, implementation step and specific configuration are included:
A) ship 10 is provided, the hull 11 of the ship 10 has a propeller 13 in the present embodiment, is drawn by a power Hold up 131 to be driven, the propeller 13 is sent out high-velocity flow F, and a vessel orientation rudder 14 is located at after the propeller 13.
B) leading edge in foregoing vessel orientation rudder 14 is provided with gas bubbles releasing device 20, as shown in Figure 6, Figure 7, this implementation In example, the gas bubbles releasing device 20 is constituted using a hollow component 21, is arranged on the upstream face of the vessel orientation rudder 14, The hollow component 21 is provided with least one gas introduction port 211, and both sides are provided with several gas bubbles and disengage mouth 212, the gas It can be circular hole or other bodies that bubble disengages mouth 212, and in the present embodiment, the hollow component 21 is located at the vessel orientation for a pipe The upstream face of the leading edge of rudder 14, but it is not limited to this.Hollow component 21 i.e. of the invention, can be other bodies, and in various body On be drilled with the gas bubbles of majority and disengage mouth 212, and it can be circular hole or other shapes that the gas bubbles disengage mouth 212.It is this kind of Change in shape, being all the present invention can practical range.Furthermore, the hollow component 21 can be when ship dispatches from the factory, i.e., with the ship Rudder 14 is integrally formed, and is provided with gas bubbles and disengages mouth 212;Also can ship under arms, set and fix to carry additionally mode In the upstream face of the vessel orientation rudder 14, will not be corrupted in the structure of vessel orientation rudder 14, and setting and be convenient to.
C) gas leading-in device 30 is provided, as shown in figure 4, it includes an at least air guide body 31, the air guide body 31 Upper end has an air inlet 32, and hypomere portion is connected to the gas introduction port 211 of the gas bubbles releasing device 20.And the air guide The air inlet 32 of the upper end of body 31 may be provided in hull 11 or higher than in water line 12.
When d) being advanced using the hull 11, the high-velocity flow F produced by propeller 13 impacts meeting for the vessel orientation rudder 14 The water surface, disengages mouth 212 and forms negative pressure to inhale using bernoulli principle (Bernoulli ' s Principle) in the gas bubbles Enter gas;When being rotated due to propeller 13, the speed of the axial current produced by it is exceedingly fast, therefore can be released in the gas bubbles Outlet 212 produces very big negative pressure to suck gas, and the introduction method of this gas completely dispenses with power, as long as propeller 13 Rotate, you can introduce gas into, form the countless very save energies of gas bubbles 50.
E) These gases flow into the gas introduction port 211 via the air guide body 31, and disengage mouth via the gas bubbles After 212 disengage and mix with current, numerous gas bubbles 50 are formed.
F) as shown in figure 3, using the foregoing gas bubbles 50 disengaged come isolated part current F and the vessel orientation rudder 14 Contact friction, so as to reducing resistance of the vessel orientation rudder 14 to the high-velocity flow produced by propeller 13.
It is professed, about 700~800 times of the resistance ratios air of water, therefore partly isolate current using gas bubbles 50 With the contact of vessel orientation rudder 14, resistance necessarily reduced, and the gas bubbles 50 that vessel orientation rudder 14 is contacted with current are isolated and healed Many, the effect for reducing resistance is better.
Via above-mentioned technological means so that the present invention imports gas bubbles 50, it is only necessary in the height of the leading edge of vessel orientation rudder 14 Fast current area, sets gas bubbles releasing device 20, without any power and the original design of change.
Although as shown in figure 4, the present invention need aid in squeezing into gas, then using original resource in hull 11, for example: The air guide body 31 of the gas leading-in device 30 further connects a pressue device 34, and the air guide body 31 and the pressue device A control valve 33 is provided between 34, the pressue device 34 is by gas such as the air of the hull 11, engine exhaust or steamturbine tail gas Body, is sent into the air guide body 31 with the supplementary mode that pressurizes.
And, the pressue device 34 can be by original air compressor machine, air blower in the hull 11, and engine or steamturbine are wherein Any to be constituted, it is introduced directly on using low-pressure gases such as above-mentioned engine exhaust, steam turbine tail gas, is consequently belonging to Resource reclaim is recycled, and will not be increased resource and be increased cost.In addition it is also possible to using above-mentioned engine exhaust, steam turbine tail Gas etc. drives turbocharger, manufactures gas-pressurized, disengages mouth 212 from gas bubbles and disengages.Additionally, using the institute such as air blower The pressue device 34 of composition, also can carry out supply pressurized gas with a small amount of power, and height is isolated using substantial amounts of gas bubbles 50 Fast current F contacts with vessel orientation rudder 14, can obtain reduction drag effect higher, with can both may be used with a small amount of power The power effect of several times is obtained, and is aided in being introduced directly into gas above or gas is imported with pressuring method, be all the pressue device 34 can implement, and appearance is not repeated.
The present invention is installed in the leading edge of vessel orientation rudder 14 with a gas bubbles releasing device 20, and ingenious utilization Bernoulli Jacob is former Reason:" high-velocity fluid makes around to produce negative pressure ", gas is imported using this technological means, and then discharge gas bubbles 50 Part isolation current contact with vessel orientation rudder 14, can reach reduction vessel orientation rudder with most energy-conservation and effective means Effect of the resistance of the high-velocity flow F produced by 14 pairs of propellers 13 is promoted.
The above, is only presently preferred embodiments of the present invention, and any formal limitation is not made to the present invention, all It is any simple modification, equivalent variations and the modification made to above example according to technical spirit of the invention, still falls within In the range of technical solution of the present invention.
In sum, the present invention is in structure design, using in practicality and cost benefit, complying fully with industry development institute Need, and disclosed structure is also, with unprecedented innovative structure, with novelty, creativeness, practicality, to meet relevant The regulation of patent of invention important document, therefore lift application in accordance with the law.

Claims (4)

1. a kind of method for reducing vessel orientation resistance of rudder, imports gas bubbles to reduce vessel orientation rudder in water using negative pressure The method of resistance, it is characterised in that it is included:
A) ship is provided, its precalculated position is provided with propeller necessary to hull is advanced, and located at the ship of the rear propeller Rudder;
B) leading edge in foregoing vessel orientation rudder is provided with gas bubbles releasing device, and it utilizes a hollow component to constitute setting In the upstream face of the vessel orientation rudder, at least one gas introduction port is which is provided with, and both sides are provided with several gas bubbles and disengage Mouthful;
C) provide a gas leading-in device, it includes an at least air guide body, the air guide body upper end have an air inlet, and under End is connected to the gas introduction port of the gas bubbles releasing device;
When d) being advanced using the hull, the high-velocity flow (F) produced by propeller impacts the upstream face of the vessel orientation rudder, utilizes Bernoulli principle disengages mouth and forms negative pressure to suck gas in the gas bubbles;
E) These gases flow into the gas introduction port via the air guide body, and disengage mouth via the gas bubbles and disengage and current After mixing, numerous gas bubbles are formed;
F) using the foregoing gas bubbles disengaged come the contact friction between isolated part current and the vessel orientation rudder, so as to drop Resistance of the low vessel orientation rudder to the high-velocity flow produced by propeller.
2. it is according to claim 1 reduce vessel orientation resistance of rudder method, it is characterised in that the air guide body upper end Air inlet be located in the hull.
3. it is according to claim 2 reduce vessel orientation resistance of rudder method, it is characterised in that the gas leading-in device Gas, including exhaust gas utilization are imported further with supplementary mode, with engine exhaust or steamturbine tail gas low-pressure gas, feeding In the wireway body.
4. it is according to claim 3 reduce vessel orientation resistance of rudder method, it is characterised in that be further provided with a pressurization dress Put, it is made up of the air compressor machine of the hull, air blower, engine, steamturbine or turbocharger any of which, to pressurize Mode is fed gas into the wireway body.
CN201110235849.3A 2011-08-17 2011-08-17 The method for reducing vessel orientation resistance of rudder Expired - Fee Related CN102951255B (en)

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Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110235849.3A CN102951255B (en) 2011-08-17 2011-08-17 The method for reducing vessel orientation resistance of rudder

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CN102951255B true CN102951255B (en) 2017-05-31

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105366024B (en) * 2015-12-10 2017-05-31 重庆交通大学 A kind of drag-reduction energy-saving type rudder blade
CN110053752A (en) * 2019-05-13 2019-07-26 哈尔滨工程大学 A kind of rudder face cavitation effect inhibition device
CN112109844B (en) * 2020-09-18 2021-09-10 哈尔滨工程大学 Automatic air suction strut structure applied to small waterplane area catamaran

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* Cited by examiner, † Cited by third party
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US3680511A (en) * 1969-09-25 1972-08-01 Nat Res Dev Hydrofoils for ships and like vessels
FR2203353A5 (en) * 1972-09-12 1974-05-10 France Etat
US6186085B1 (en) * 1995-12-04 2001-02-13 Hiroharu Kato Method for reducing frictional resistance of hull, frictional resistance reducing ship using such method, and method for analyzing ejected air-bubbles from ship
CN201761626U (en) * 2010-06-29 2011-03-16 中国船舶重工集团公司第七〇二研究所 Air supply system of air cavity drag-reduction ship

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