CN108016566A - A kind of gas film resistance reducing device for ship - Google Patents
A kind of gas film resistance reducing device for ship Download PDFInfo
- Publication number
- CN108016566A CN108016566A CN201711242850.2A CN201711242850A CN108016566A CN 108016566 A CN108016566 A CN 108016566A CN 201711242850 A CN201711242850 A CN 201711242850A CN 108016566 A CN108016566 A CN 108016566A
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- Prior art keywords
- gas
- ship
- air
- supply system
- reducing device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
- B63B2001/387—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes using means for producing a film of air or air bubbles over at least a significant portion of the hull surface
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of gas film resistance reducing device for ship, including control system, the gentle film device of air supply system, air film device includes multiple micropore mechanisms, multiple micropore mechanisms are uniformly distributed in the bottom of ship, micropore mechanism is connected by corresponding point of gas-guide tube with main gas tube, main gas tube is connected with air supply system, and air supply system is electrically connected with control system.The configuration of the present invention is simple, it can effectively avoid the loss that bubble causes energy into propeller for vessels, save the energy, air film device can make gas be uniformly distributed in bottom of ship, and the air flux between each micropore mechanism is increased or decreased according to actual needs by control system or directly turns off corresponding micropore mechanism, the unstability during ship running caused by bubble coalescence is can effectively avoid, securely and reliably.
Description
Technical field
The present invention relates to Ship Energy Saving Device technical field, and in particular to a kind of gas film resistance reducing device for ship.
Background technology
In the process of moving, hull surface frictional resistance is in large-scale oil groove caused by the vortex that hull surface produces for ship
There is more than 80% proportion for accounting for drag overall in the case of ship, seriously affect the speed of ship running, energy consumption is larger.
At present, ship drag reduction technology is such as alow actively or passively injected mostly using air as drag reduction medium in cavity
Gas, so that the contact area between hull bottom face and water is reduced, frictional resistance when achieving the purpose that to reduce ship's navigation.Tradition
There are some following technology barrier for air drag reduction technology：The 1st, although air has reached the mesh of part drag reduction after entering hull bottom cavity
, but air from hull bottom discharge it is backward after move to propeller area when unnecessary vacuole can be produced in propeller area, seriously
The power output of propeller is restricted, causes the energy loss of propeller serious；2nd, due to hull bottom moulding be for contacted with water and
In water designed by navigation, therefore when the ship of high-speed cruising meets current, crosswind or voluntarily tempo turn, the bubble of hull bottom generation
It can inevitably assemble to side, cause both sides hull bottom resistance uneven, seriously affect the preceding line direction of ship, or even cause
Ship overturns, and there are security risk.
The drawbacks of present invention is for appeal drag reduction technology, studies the prior art, there is provided a kind of gas is controllable
Ship drag reduction device.The device can not only reduce the resistance of ship's navigation, and will not produce harmful effect to the power of ship,
Securely and reliably.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of gas film resistance reducing device for ship, during reducing ship drag reduction
Bubble restricts propeller power output so that bubble is alow uniformly distributed, and is turned or is met high sea situation and subtract when special circumstances
Fraction supplies or a full set of system of shut-off, the stability of increase ship in the process of moving.
The technical solution that the present invention solves above-mentioned technical problem is as follows：
A kind of gas film resistance reducing device for ship, including the gentle film device of control system, air supply system, the air film device include
Multiple micropore mechanisms, multiple micropore mechanisms are uniformly distributed to be passed through corresponding in the bottom of the ship, the micropore mechanism
Gas-guide tube is divided to be connected with main gas tube, the main gas tube is connected with the air supply system, the air supply system and the control
System is electrically connected.
The beneficial effects of the invention are as follows：The present invention is supplied by air supply system to air film device, and air film device includes multiple
Micropore mechanism, gas in bottom of ship form air film after spuing by micropore mechanism, bottom of ship is contacted with water and be changed to and gas
Body contacts, and effectively reduces the frictional resistance of bottom of ship, saves the energy；Meanwhile alow subregion is separated air film device,
Gas is uniformly distributed in bottom of ship when low sea situation or ship are kept straight on, and when high sea situation, ship meet crosswind or turn, system can subtract
Small or cutoff micropore mechanism, prevents bubble from assembling to side hull bottom, adds the stability of ship in the process of moving；It is whole
A device is controlled by control system, full-automatic, easy to operate, saves manpower.
Based on the above technical solutions, the present invention can also be improved as follows.
Further, the air supply system includes air blower and air storage chamber, and the air storage chamber is connected with the main gas tube, institute
Air blower is stated to be electrically connected with the control system.
Beneficial effect using above-mentioned further scheme is control system control air blower, realizes automatic feeding, operation letter
Just.
Further, the air supply system is low high pressure air feed system and/or high pressure air feed system.
Beneficial effect using above-mentioned further scheme is to select air supply system according to actual needs, also can low high pressure and height
Pressure air supply system is applied at the same time, easy to use, using flexible.
Further, the air supply system is preferably CO2Air supply system.
Beneficial effect using above-mentioned further scheme is CO2CO can be selected2Gas cylinder supplies, CO2Diffusion rate in water
It hurry up, eliminate restriction of the gas to propeller power, save the energy.
Further, engine exhaust system can be selected in the air supply system.
Beneficial effect using above-mentioned further scheme is to be used as air supply system, fully profit by the use of the exhaust gas that engine produces
With exhaust gas, the energy, increase space availability ratio are not only saved, while because containing a large amount of CO in engine exhaust2, also increase bubble
Diffusion rate in water, eliminates the power restriction to propeller.
Further, the discharge duct of the engine exhaust system is equipped with filtration apparatus, the filtration apparatus with it is described
Control system is electrically connected.
Beneficial effect using above-mentioned further scheme is the suspended particulate removed using filtration apparatus in exhaust gas, avoids giving up
Suspended particulate in gas blocks tracheae and micropore mechanism, increases maintaining difficulty and workload, reduces device lifetime, influences gas
The formation of film.
Further, the micropore mechanism is coiled to form by microporous pipe, and the microporous pipe divides gas-guide tube to connect with described.
Beneficial effect using above-mentioned further scheme is to be coiled in bottom of ship using microporous pipe so that gas uniformly divides
The bottom of ship is distributed in, avoids accumulated gases from influencing the stability of ship under steam in the side of ship.
Further, the micropore mechanism is hollow microwell plate, and the microwell plate upper end is equipped with air inlet, the air inlet
With it is corresponding it is described divide gas-guide tube to connect, the microwell plate lower end is uniformly distributed some micropores.
Beneficial effect using above-mentioned further scheme is that microwell plate is evenly distributed on bottom of ship so that gas uniformly divides
The bottom of ship is distributed in, avoids accumulated gases from influencing the stability of ship under steam in the side of ship.
Further, a diameter of 0.1~1.0mm of the microporous pipe.
Further, it is each described divide to correspond on gas-guide tube be equipped with control valve, each the control valve with it is described
Control system is electrically connected.
Beneficial effect using above-mentioned further scheme is that the supply of air supply system is on the one hand adjusted by control valve
Amount；On the other hand, control system controls being turned on and off for the control valve on each point of gas-guide tube, can be according to the reality of ship's navigation
The quantity for the control valve that the condition selecting of border condition and ship itself is opened, forms air film of different shapes.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the structure diagram of micropore mechanism embodiment one in the present invention；
Fig. 3 is the structure diagram of micropore mechanism embodiment two in the present invention.
In attached drawing, parts list represented by the reference numerals is as follows：
1st, control system, 2, air supply system, 3, air film device, 4, micropore mechanism, 5, engine exhaust system, 6, filtering dress
Put, 7, micropore, 8, control valve.
Embodiment
The principle of the present invention and feature are described below in conjunction with drawings and the specific embodiments, example is served only for solving
The present invention is released, is not intended to limit the scope of the present invention.
As shown in Figure 1, a kind of gas film resistance reducing device for ship of present invention offer, including control system 1, air supply system 2 are gentle
Film device 3, air film device 3 include multiple micropore mechanisms 4, and multiple micropore mechanisms 4 are uniformly distributed in the bottom of ship, multiple micropores
Relative closure between mechanism 4, is connected by valve, and micropore mechanism 4 is connected by corresponding point of gas-guide tube with main gas tube, dominates gas
Pipe is connected with air supply system 2, and air supply system 2 is electrically connected with control system 1, the preferably microcontroller of control system 1, control system 1
Control air supply system 2 is supplied to air film device 3 automatically, and gas is formed in bottom of ship after the micropore mechanism 4 in air film device 3 is venting one's pent-up feelings
Film, is separated ship and water using gas, reduces the friction between ship and water, bottom of ship is contacted with water and is changed to and gas
Contact, effectively reduces the frictional resistance of bottom of ship, reduces energy consumption, saves the energy.
In the present invention, air supply system 2 includes air blower and air storage chamber, and air storage chamber is connected with main gas tube, air blower and control
System 1 processed is electrically connected, and control system 1 controls being turned on and off for air blower, realizes automatic feeding；Except being provided using air blower
Outside source of the gas, air pump or gas cylinder also can be used to provide source of the gas.Air supply system 2 is low high pressure air feed system and/or high-pressure air feed system
System, user can select air supply system 2 according to being actually needed, also can low high pressure and high pressure air feed system apply at the same time, it is easy to use；
When shipping high speed operation or severe driving conditions, then high pressure air feed system supply is needed to meet the driving conditions of ship, but
High pressure air feed system energy consumption is big；When ship gently travels, and is supplied without long-term high-pressure system, then low high pressure air feed system is selected
Supply, had both met the driving conditions of ship, while also save the energy.In addition to said structure, air supply system 2 includes source of the gas, switching
Device and regulator, this structure can only install set of system, according to actual needs, pass through switching device and regulator
The change of gas pressure is realized, so as to meet the needs of actual.CO can be selected in the source of the gas that air supply system 2 supplies2Source of the gas, at 0 DEG C
The solubility of standard atmospheric pressure carbon dioxide in water is (volume ratio) 1:1.713, depress titanium dioxide in 20 DEG C of normal atmospheres
The solubility of carbon in water is (volume ratio) 1:0.878；And the solubility in 0 DEG C of normal atmosphere pressure air in water is only 1:
0.29, it is 1 in the solubility of 20 DEG C of normal atmosphere pressure air in water：0.19, for other sources of the gas, CO2Make
For speed of the source of the gas disperse in water faster, part source of the gas is avoided to reach not soluble in water yet at propeller, restriction propeller
Power, consuming energy；When using CO2During air supply system, by wind turbine by bottled CO2Gas is sent into main gas tube.
As shown in Figure 1, in the present invention, air supply system 2 is preferably engine exhaust system 5, engine can be made full use of to produce
Raw exhaust gas, realizes exhaust gas utilization, saves the energy, while it also avoid engine exhaust emission into air and pollute air,
Have the function that energy-saving and emission-reduction；The main component of engine exhaust is CO2, for other sources of the gas, CO2As source of the gas more
Dissipate speed in water faster, avoid part source of the gas reach it is not soluble in water yet at propeller, so as to restrict the dynamic of propeller
Power, consuming energy.The admission line of engine exhaust system 5 is equipped with filtration apparatus 6, and filtration apparatus 6 is electrically connected with control system 1
Connect；When using engine exhaust system 5 as air supply system 2, control system 1 opens filtration apparatus 6, is filtered to remove in exhaust gas
Suspended particulate, avoid suspended particulate in exhaust gas from blocking tracheae and micropore mechanism 4, so as to influence bottom of ship gas film behavior
Shape, reduce lifetime of system, increase maintaining difficulty and workload.
Preferably, in the present invention, each divide on gas-guide tube to correspond and be equipped with control valve 8, the preferably electromagnetism of control valve 8
Valve, each control valve 8 are electrically connected with control system 1, and control system 1 is adjusted according to the actual conditions of ship's navigation and controlled
The quantity of 8 folding of valve processed, so as to control the shape of the air film of bottom of ship formation.
The operation principle of the present invention is as follows：
Control system 1 controls air supply system 2 to be supplied to air film device 3, while control system 1 is according to the reality of ship running
Situation, opens the control valve 8 on corresponding point of gas-guide tube, and gas is spued by micropore mechanism 4, and air film is formed in bottom of ship,
Ship and water are separated using the air film of formation, reduce the friction between ship and water, make bottom of ship contacted with water be changed to and
Gas contacts, and effectively reduces the frictional resistance of bottom of ship, reduces energy consumption, saves the energy；Make when using engine exhaust system 5
For air supply system 2 when, control system 1 open admission line on unlatching filtration apparatus 6, the suspension being filtered to remove in exhaust gas
Grain, avoids the suspended particulate in exhaust gas from blocking tracheae and micropore mechanism 4, so as to influence the shape of bottom of ship gas film behavior.
Embodiment 1
As shown in Fig. 2, in the present embodiment, micropore mechanism 4 is coiled to form by microporous pipe, and microporous pipe is by plastics or metal material
It is made, a diameter of 0.1~1.0mm of the micropore 7 in microporous pipe, microporous pipe is with dividing gas-guide tube to connect, the control supply of control system 1
System 2 gives microporous pipe supply, and gas spued by microporous pipe, and air film is formed in bottom of ship, using the air film of formation by ship
Separated with water, reduce the friction between ship and water, bottom of ship is contacted with water and be changed to contact with gas, effectively reduce ship
The frictional resistance of bottom, reduces energy consumption, saves the energy.
Embodiment 2
As shown in figure 3, in the present embodiment, micropore mechanism 4 is hollow microwell plate, and microwell plate is by plastics or metal material system
Into, microwell plate upper end is equipped with air inlet, and air inlet is connected with corresponding point of gas-guide tube, microwell plate lower end is uniformly distributed have it is some micro-
Hole 7, a diameter of 0.1~1.0mm of micropore 7, control system 1 control air supply system 2 to be supplied to microwell plate, and gas passes through microwell plate
Spue, form air film in bottom of ship, separated ship and water using the air film of formation, reduce the friction between ship and water,
Make bottom of ship contact with water to be changed to contact with gas, effectively reduce the frictional resistance of bottom of ship, reduce energy consumption, save energy
Source.
In the present invention, which can effectively eliminate interference of the gas to stern propeller of disperse, eliminate spiral
The power loss of paddle, saves the energy, while also so that gas is uniformly distributed in bottom of ship, hull is steady during increase travels
It is qualitative；According to actual conditions, the present invention can automatically shut down whole system, such as ship entry, high sea situation, high speed turn when necessary
It is curved or run at a low speed, drag-reduction energy-saving is realized on the basis of safety of ship has been ensured.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (10)
- A kind of 1. gas film resistance reducing device for ship, it is characterised in that：Including control system (1), air supply system (2) gentle film device (3), the air film device (3) includes multiple micropore mechanisms (4), and multiple micropore mechanisms (4) are uniformly distributed in the ship Bottom, the micropore mechanism (4) connected by corresponding point of gas-guide tube with main gas tube, the main gas tube and the supply System (2) connects, and the air supply system (2) is electrically connected with the control system (1).
- A kind of 2. gas film resistance reducing device for ship according to claim 1, it is characterised in that：The air supply system (2) includes Air blower and air storage chamber, the air storage chamber are connected with the main gas tube, and the air blower is electrically connected with the control system (1) Connect.
- A kind of 3. gas film resistance reducing device for ship according to claim 2, it is characterised in that：The air supply system (2) is low High pressure air feed system and/or high pressure air feed system.
- A kind of 4. gas film resistance reducing device for ship according to claim 3, it is characterised in that：The air supply system (2) be with CO2Air supply system as source of the gas.
- A kind of 5. gas film resistance reducing device for ship according to claim 4, it is characterised in that：It is described with CO2Institute as source of the gas It is engine exhaust system (5) to state air supply system.
- A kind of 6. gas film resistance reducing device for ship according to claim 5, it is characterised in that：The engine exhaust system (5) discharge duct is equipped with filtration apparatus (6), and the filtration apparatus (6) is electrically connected with the control system (1).
- A kind of 7. gas film resistance reducing device for ship according to claim 1, it is characterised in that：The micropore mechanism (4) is by micro- Hole pipe is coiled to form, and the microporous pipe divides gas-guide tube to connect with described.
- A kind of 8. gas film resistance reducing device for ship according to claim 7, it is characterised in that：During the micropore mechanism (4) is Empty microwell plate, the microwell plate upper end are equipped with air inlet, the air inlet with it is corresponding it is described divide gas-guide tube to connect, it is described micro- Orifice plate lower end is uniformly distributed some micropores (7).
- A kind of 9. gas film resistance reducing device for ship according to claim 8, it is characterised in that：The micropore (7) it is a diameter of 0.1~1.0mm.
- A kind of 10. gas film resistance reducing device for ship according to claim 9, it is characterised in that：Divide described in each on gas-guide tube Correspond and be equipped with control valve (8), each control valve (8) is electrically connected with the control system (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242850.2A CN108016566A (en) | 2017-11-30 | 2017-11-30 | A kind of gas film resistance reducing device for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242850.2A CN108016566A (en) | 2017-11-30 | 2017-11-30 | A kind of gas film resistance reducing device for ship |
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| Publication Number | Publication Date |
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| CN108016566A true CN108016566A (en) | 2018-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711242850.2A Pending CN108016566A (en) | 2017-11-30 | 2017-11-30 | A kind of gas film resistance reducing device for ship |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109229272A (en) * | 2018-09-03 | 2019-01-18 | 重庆中电大宇卫星应用技术研究所 | A kind of device and method reducing ship wavemaking resistance |
| CN110758634A (en) * | 2019-11-11 | 2020-02-07 | 中船重工（上海）节能技术发展有限公司 | Ship gas lubrication resistance reduction system and ship |
| CN111003102A (en) * | 2019-12-31 | 2020-04-14 | 中船重工（上海）节能技术发展有限公司 | Air-jet water-blocking sealing device suitable for ship gas layer resistance reduction system and ship |
| CN112706873A (en) * | 2020-12-02 | 2021-04-27 | 江苏科技大学 | Surface air film generation device based on wetting step and air film generation method thereof |
| CN113212637A (en) * | 2021-06-20 | 2021-08-06 | 西北工业大学 | Ship resistance reducing device |
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| US20020106946A1 (en) * | 2001-01-29 | 2002-08-08 | Simmons John Castle | Advanced propulsion system providing reduced drag and higher speed |
| KR20080085333A (en) * | 2007-03-19 | 2008-09-24 | 주식회사 아이티웰 | Resistance decrease system of vessel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109229272A (en) * | 2018-09-03 | 2019-01-18 | 重庆中电大宇卫星应用技术研究所 | A kind of device and method reducing ship wavemaking resistance |
| CN110758634A (en) * | 2019-11-11 | 2020-02-07 | 中船重工（上海）节能技术发展有限公司 | Ship gas lubrication resistance reduction system and ship |
| CN111003102A (en) * | 2019-12-31 | 2020-04-14 | 中船重工（上海）节能技术发展有限公司 | Air-jet water-blocking sealing device suitable for ship gas layer resistance reduction system and ship |
| CN112706873A (en) * | 2020-12-02 | 2021-04-27 | 江苏科技大学 | Surface air film generation device based on wetting step and air film generation method thereof |
| CN112706873B (en) * | 2020-12-02 | 2022-05-13 | 江苏科技大学 | Surface air film generation device based on wetting step and air film generation method thereof |
| CN113212637A (en) * | 2021-06-20 | 2021-08-06 | 西北工业大学 | Ship resistance reducing device |
| CN113212637B (en) * | 2021-06-20 | 2023-10-27 | 西北工业大学 | Ship drag reduction device |
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Application publication date: 20180511 |