CN105730607A - Bubble damping device used for water navigation body - Google Patents
Bubble damping device used for water navigation body Download PDFInfo
- Publication number
- CN105730607A CN105730607A CN201610071957.4A CN201610071957A CN105730607A CN 105730607 A CN105730607 A CN 105730607A CN 201610071957 A CN201610071957 A CN 201610071957A CN 105730607 A CN105730607 A CN 105730607A
- Authority
- CN
- China
- Prior art keywords
- water
- hydrofoil
- connector
- sail body
- reduction device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
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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
- B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
- B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
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- 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)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a bubble damping device used for a water navigation body and belongs to the technical field of water navigation. The bubble damping device comprises a water wing and connecting pieces. The water wing and the connecting pieces are each of a hollow structure. Multiple open holes used for ejecting air are formed in the upper wing face of the water wing. The water wing communicates with the connecting pieces and is sealed. The connecting pieces communicate with the water navigation body. An air circulating channel is composed of the hollow water wing and the hollow connecting pieces, the open hole positions in a traditional WAIP damping device are successfully moved to the upper surface of the water wing from the surface of an object, the surface of the object is prevented from being punched, the original mechanical and structural characteristics of the navigation body are kept, and the situation that in the traditional surface-punched WAIP of the navigation body, when the flow of an air compressor is too large, a water wing is wrapped by air, and consequently the damping efficiency is reduced is avoided.
Description
Technical field
The present invention relates to a kind of damping device, be especially a kind of for the bubble drag-reduction device of sail body in water, belong to navigation technical field in water。
Background technology
Along with the high speed development of modern society, going from bad to worse of environment, the consumption wantonly of the energy, the idea of environmental protection and energy saving constantly causes attention and the support of people.Sail body in water, one of frictional resistance key factor being so that its energy loss that the ship of navigation, the torpedo of underwater emission and the submarine etc. of guided missile, underwater navigation are subject in water.Drag reduction can be realized by injecting bubble at body surface, there has been proposed by the method for electrolysis water produce air be attached to body surface or use compressor coordinate porous media inject air, but due to the manufacture of air with inject and to consume substantial amounts of energy, and the additional energy that bubble drag-reduction brings advantage inconspicuous compared with actual drag-reduction effect.
Additional energy problem for tradition bubble drag-reduction, document 1(KumagaiI, TakahashiY, MuraiY.Power-savingdeviceforairbubblegenerationusingahyd rofoiltoreduceshipdrag:Theory, experiments, andapplicationtoships [J] .OceanEngineering, 2015,95:183-194.) the bubble drag-reduction device drag reduction for boats and ships that one is called WAIP (WingedAirInductionPipe) has been invented.This device is by hull bottom perforate the hydrofoil installing the similar aerofoil profile shape of cross section, utilizing the pull strength that hydrofoil top airfoil negative pressuren zone produces to will be located in the air above the water surface and suck the bottom of hull.Although this bubble drag-reduction device solves the tradition bubble drag-reduction additional energy problem when bubble injects, but still has the disadvantage in that first, it needs in the perforate of sail body surface, affects the original mechanics of sail body and architectural characteristic；Secondly, sail body is when draft is bigger, and the pull strength that hydrofoil upper surface produces is not enough, it is necessary to use compressor to coordinate air-breathing, when compressor controls improper meeting, drag reduction is had side effects, causes that drag reduction efficiency declines, and structure is complicated, operation inconvenience.
Summary of the invention
The technical problem to be solved is in that, overcome prior art defect provide a kind of avoid in water navigate by water surface perforate and eliminate compressor control improper bubble drag-reduction is had side effects for the bubble drag-reduction device of sail body in water.
In order to solve above-mentioned technical problem, provided by the invention for the bubble drag-reduction device of sail body in water, including hydrofoil and connector, described hydrofoil and connector are hollow structure, the top airfoil of described hydrofoil is provided with multiple perforate for spraying gas, described hydrofoil connects with connector and seals, and described connector connects with sail body in water.
In the present invention, the lower end of described connector is provided with admission line, and upper end is provided with outlet pipe, and described admission line communicates with outlet pipe, the two perpendicular setting；The two ends of described hydrofoil connect connector respectively, and the lower end of described connector is fixing with hydrofoil to be connected, the inner space of outlet pipe and hydrofoil.
In the present invention, the longitudinal cross-section of described perforate is shrinkage type or expanding.
In the present invention, described shrinkage type is unilateral shrinkage type.
In the present invention, described expanding is unilateral expanding.
In the present invention, described perforate cross section is circular or seam shape.
In the present invention, described hydrofoil is strip.
The operation principle of the present invention is: when navigation height speed motion in water, there is negative pressuren zone in hydrofoil upper surface, utilize the pressure difference that hydrofoil upper surface and atmospheric pressure are formed as pull strength, air be subject to the effect of this pull strength flow through the connector of hollow and hydrofoil finally from the perforate of hydrofoil upper surface ejection arrive in water, the air of ejection constantly comes off from hydrofoil upper surface and is attached to sail body surface with incoming flow thus reaching the purpose of bubble drag-reduction backward.
The beneficial effects of the present invention is: (1), utilize the hydrofoil of hollow and the connector of hollow constitute air circulation passage, successfully the position of opening in tradition WAIP damping device is moved to hydrofoil upper surface from body surface, avoid in body surface perforate, keep the original mechanics of sail body and architectural characteristic；(2), owing to position of opening has transferred to hydrofoil upper surface, the flow direction of gas is become from bottom to top by original from top to down, it is to avoid cause that gas wrapping lives the situation that hydrofoil makes drag reduction efficiency decline when compressor flow is excessive in the WAIP of traditional sail body surface perforate；(3), by admission line and the perpendicular setting of outlet pipe, the installation of connector can be easy to；(5), hydrofoil adopts strip while reducing self resistance, it is possible to improve the number of openings.
Accompanying drawing explanation
Fig. 1 is for the structural representation of the bubble drag-reduction device of sail body in water for the present invention；
Fig. 2 is for connecting-piece structure figure；
Fig. 3 is for round hole hydrofoil structural representation；
Fig. 4 is the partial enlarged drawing for round hole hydrofoil；
Fig. 5 is for open-celled structure schematic diagram；
Fig. 6 is for seam shape perforate hydrofoil tomograph；
Fig. 7 is the partial enlarged drawing for stitching shape perforate hydrofoil；
Fig. 8 is the front view of aerofoil perforating bubble drag-reduction device of the present invention；
Fig. 9 is the top view of aerofoil perforating bubble drag-reduction device of the present invention；
Figure 10 is aerofoil perforating bubble drag-reduction device left view of the present invention；
In figure: 1-flat board, 2-connector, 3-hydrofoil, 4-aerofoil perforate, 5-seal washer, 6-screw, 7-bolt.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Such as Fig. 1 to 5, shown in 8 to 10, the present invention is for the bubble drag-reduction device of sail body in water, including flat board 1, connector 2 and hydrofoil 3.Wherein, connector 2 and hydrofoil 3 are the cavity of hollow.Flat board 1 is for treating to carry out sail body in the water of drag reduction, and the ship of navigation, submarine etc. in water, bubble drag-reduction device can be arranged on bottom or the left and right sides of sail body in water.
Hydrofoil 3 is string configuration, for the inner hollow cavity with wall thickness, the top airfoil of hydrofoil 3 has many rows of openings 4, is used for spraying air.Perforate 4 cross section is circular configuration, and the size and number of perforate needs to be adjusted according to actually used situation.The left and right of hydrofoil 3 is respectively arranged at two ends with unthreaded hole 10, unthreaded hole 10 be respectively provided on two sides with screwed hole, unthreaded hole 10 for cooperatively forming the passage of air flowing with connector 2, and screwed hole then fixes connector 2 for attachment screw 6.As it is shown in figure 5, the longitudinal cross-section of perforate 4 can be cylindrical, shrinkage type or expanding, shrinkage type can be divided into one side or bilateral shrinkage type, and expanding can be divided into one side or bilateral expanding, and in figure, arrow is air-flow direction.In some cases, as by compressor to supercharging air, adopt shrinkage hole can accelerate the flowing of air, improve the air velocity in aperture；Adopt expanded bore then can reduce the air velocity at aperture place.The flow direction of aperture air can be changed by unilateral contraction/distension hole, by controlling flow velocity and the flow direction of aperture air, control air kinestate in water, thus affecting contact position and the time of bubble and object (such as hull bottom), adopt different passes, control the mixed process of air and water, enable this device to be suitable for different application scenarios.
As shown in Figure 2, the profile of connector 2 is similar is " Z " font, it it is a cavity having wall thickness, the middle part of connector 2 top and bottom is respectively provided with one section of pipeline stretched out, upper end pipeline is admission line 8, lower channel is outlet pipe 9, outlet pipe 9 and the perpendicular setting of admission line 8, and the two communicates.With external screw thread on admission line 8, fitted bolt 7 is used for connecting flat board 1, for providing air to intracavity in hydrofoil 3.Outlet pipe 9 is then used for connecting hydrofoil 3.The both sides of outlet pipe 9 are provided with the screwed hole corresponding with screwed hole position, hydrofoil 3 two ends.By by outlet pipe 9 and the perpendicular setting of admission line 8, it is possible to be easy to connector 2 and be connected with hydrofoil 3, flat board 1.
As shown in Fig. 1,8,9 and 10, the outlet pipe of two connector 2 lower ends inserts in the unthreaded hole 10 at hydrofoil 3 two ends, and the connection realized between connector 2 and hydrofoil 3 by screw 6 is fixed, and connector 2 and hydrofoil 3 junction arrange rubber washer 5 and seal.The admission line 8 of two connector 2 upper ends is through the two ends of flat board 1 and by bolt 7, it is achieved be connected fixing with flat board 1.Connector 2 and flat board 1 junction arrange rubber washer 5 equally and seal.In outside that the admission line 8 of connector 2 upper end can be connected in water sail body by pipeline or cabin.
When carrying out drag reduction, air is entered by the admission line upper end of connector 2, flows through connector 2, enters hydrofoil 3 from the gas pipeline that goes out of connector 2 lower end, finally flows out from the perforate 4 top airfoil of hydrofoil 3, produce bubble.
As shown in Figures 6 and 7, in another embodiment, perforate 4 cross section is seam shape structure.
Above-mentioned detailed description of the invention is the preferred embodiments of the present invention, can not limit the invention, and what other any made without departing from technical scheme change or the substitute mode of other equivalence, is included within protection scope of the present invention.
Claims (10)
1. one kind for the bubble drag-reduction device of sail body in water, including hydrofoil, it is characterized in that: also include connector, described hydrofoil and connector are hollow structure, the top airfoil of described hydrofoil is provided with multiple perforate for spraying gas, described hydrofoil connects with connector one end and seals, and the described connector other end connects with sail body in water.
2. according to claim 1 for the bubble drag-reduction device of sail body in water, it is characterised in that: the lower end of described connector is provided with admission line, and upper end is provided with outlet pipe, and described admission line communicates with outlet pipe, the two perpendicular setting；The two ends of described hydrofoil connect connector respectively, and the lower end of described connector is fixing with hydrofoil to be connected, the inner space of outlet pipe and hydrofoil.
3. according to claim 1 and 2 for the bubble drag-reduction device of sail body in water, it is characterised in that: the longitudinal cross-section of described perforate is shrinkage type or expanding.
4. according to claim 3 for the bubble drag-reduction device of sail body in water, it is characterised in that: described shrinkage type is unilateral shrinkage type.
5. according to claim 3 for the bubble drag-reduction device of sail body in water, it is characterised in that: described expanding is unilateral expanding.
6. according to claim 1 and 2 for the bubble drag-reduction device of sail body in water, it is characterised in that: described perforate cross section is circular or seam shape.
7. according to claim 6 for the bubble drag-reduction device of sail body in water, it is characterised in that: the longitudinal cross-section of described perforate is shrinkage type or expanding.
8. according to claim 7 for the bubble drag-reduction device of sail body in water, it is characterised in that: described shrinkage type is unilateral shrinkage type.
9. according to claim 7 for the bubble drag-reduction device of sail body in water, it is characterised in that: described expanding is unilateral expanding.
10. according to claim 1 and 2 for the bubble drag-reduction device of sail body in water, it is characterised in that: described hydrofoil is strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071957.4A CN105730607A (en) | 2016-02-02 | 2016-02-02 | Bubble damping device used for water navigation body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071957.4A CN105730607A (en) | 2016-02-02 | 2016-02-02 | Bubble damping device used for water navigation body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105730607A true CN105730607A (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610071957.4A Pending CN105730607A (en) | 2016-02-02 | 2016-02-02 | Bubble damping device used for water navigation body |
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| CN (1) | CN105730607A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080954A (en) * | 2016-07-28 | 2016-11-09 | 广船国际有限公司 | A kind of boats and ships electrolysis water tiny bubble damping device |
| CN108341019A (en) * | 2018-04-03 | 2018-07-31 | 常州大学 | A kind of bubble drag-reduction device for ship |
| CN109131720A (en) * | 2018-09-01 | 2019-01-04 | 哈尔滨工程大学 | A kind of water medium-high speed sports body Friction Reduction by Micro-bubbles structure |
| CN110498006A (en) * | 2018-05-17 | 2019-11-26 | 上海轻航气膜减阻船舶有限公司 | Air layers reducing resistance energy conservation ship |
| CN111469977A (en) * | 2020-03-26 | 2020-07-31 | 广东海洋大学 | Energy-saving slider capable of increasing advancing speed of ship |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08301178A (en) * | 1995-05-09 | 1996-11-19 | Yamaha Motor Co Ltd | Totally submerged type hydrofoil craft |
| JP2011088515A (en) * | 2009-10-21 | 2011-05-06 | K & I Inc | Frictional resistance reducing ship |
| CN202378861U (en) * | 2011-12-16 | 2012-08-15 | 黄建华 | Hydrofoil hovercraft |
| JP5132828B1 (en) * | 2012-06-01 | 2013-01-30 | 株式会社 ドットコム・リレーションズ | Friction resistance reduction ship |
| CN205417989U (en) * | 2016-02-02 | 2016-08-03 | 南京航空航天大学 | A bubble fairing for aquatic navigation body |
-
2016
- 2016-02-02 CN CN201610071957.4A patent/CN105730607A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08301178A (en) * | 1995-05-09 | 1996-11-19 | Yamaha Motor Co Ltd | Totally submerged type hydrofoil craft |
| JP2011088515A (en) * | 2009-10-21 | 2011-05-06 | K & I Inc | Frictional resistance reducing ship |
| CN202378861U (en) * | 2011-12-16 | 2012-08-15 | 黄建华 | Hydrofoil hovercraft |
| JP5132828B1 (en) * | 2012-06-01 | 2013-01-30 | 株式会社 ドットコム・リレーションズ | Friction resistance reduction ship |
| CN205417989U (en) * | 2016-02-02 | 2016-08-03 | 南京航空航天大学 | A bubble fairing for aquatic navigation body |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080954A (en) * | 2016-07-28 | 2016-11-09 | 广船国际有限公司 | A kind of boats and ships electrolysis water tiny bubble damping device |
| CN108341019A (en) * | 2018-04-03 | 2018-07-31 | 常州大学 | A kind of bubble drag-reduction device for ship |
| CN110498006A (en) * | 2018-05-17 | 2019-11-26 | 上海轻航气膜减阻船舶有限公司 | Air layers reducing resistance energy conservation ship |
| CN109131720A (en) * | 2018-09-01 | 2019-01-04 | 哈尔滨工程大学 | A kind of water medium-high speed sports body Friction Reduction by Micro-bubbles structure |
| CN111469977A (en) * | 2020-03-26 | 2020-07-31 | 广东海洋大学 | Energy-saving slider capable of increasing advancing speed of ship |
| CN111469977B (en) * | 2020-03-26 | 2021-01-08 | 广东海洋大学 | Energy-saving slider capable of increasing advancing speed of ship body |
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Application publication date: 20160706 |
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