CN202295215U - Air curtain resistance reducing device for high speed craft - Google Patents
Air curtain resistance reducing device for high speed craft Download PDFInfo
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- CN202295215U CN202295215U CN201120401105XU CN201120401105U CN202295215U CN 202295215 U CN202295215 U CN 202295215U CN 201120401105X U CN201120401105X U CN 201120401105XU CN 201120401105 U CN201120401105 U CN 201120401105U CN 202295215 U CN202295215 U CN 202295215U
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- air
- air curtain
- pressure
- gas
- resistance reducing
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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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Abstract
The utility model discloses an air curtain resistance reducing device for a high speed craft. The air curtain resistance reducing device in the prior art cannot form a uniform and stable air layer for covering the bottom of a whole moving object. For solving the technical problem of the prior art, the utility model adopts the technical scheme that: the air curtain resistance reducing device for the high speed craft comprises an air inlet part, a pressure control part and an air curtain generating device; the air inlet part comprises an air source and an air delivery pipeline; the pressure control part comprises a pressure adjustor; the air curtain generating device comprises an air spray cavity, and the air spray cavity is provided with an air inlet and air spray holes; and the air inlet is connected with the air source through the air delivery pipeline, the pressure adjustor is arranged on the air delivery pipeline, and the air spray holes in the air spray cavity are formed in the same horizontal line. Compared with the prior art, the device has the advantages that: 1, the air spray holes are formed in parallel to the horizontal line, so that a uniform air curtain can be produced; 2, energy consumption is reduced; 3, the device is simple in structure and difficult to fail; and 4, the device is convenient to maintain, and reduces the maintenance cost.
Description
Technical field
The utility model belongs to Air Injection Drag Reduction device technique field, particularly relates to a kind of high-speed boat Air Injection Drag Reduction device that utilizes the supercavitation phenomenon to reduce the friction drag of hull and water.
Background technology
Mobile is when high-speed cruising, and main portion, the especially naval vessel etc. that to act on its surperficial friction drag be its resistance of motion on the water or the object of sub aqua sport.Reducing the friction drag of current and hull, is one of effective means of raising ship navigation speed.And the wetted surface that reduces hull can directly reduce the friction drag of hull surface and water.With the wetted surface of the hull little straightforward procedure of accomplishing to try one's best, be hull surface and water to be isolated with gas.
When object moved in the water high speed, a kind of vaporization phenomenon can take place cavitation bubble in the liquid that is flowing in body surface.Method with the artificial ventilation also can form cavitation bubble, and artificial ventilation's cavitation bubble has identical flow characteristic with natural cavitation bubble.Between hull that moves and water, making the very thin air curtain of one deck, utilize the density of gas and water, the difference of viscosity, through the actual minimizing of soaking area of ships and light boats, reduce the total drag of sport boat, similarly is between the object of two frictions, to be coated with the last layer lubricating oil.
At present to the theoretical analysis of Air Injection Drag Reduction, the only limiting to of comparative maturity dull and stereotypedly flowed with pipeline.In the practice of surface vessel, device for generating air curtain all is jet on plane alow.This mode effect on the low speed flat-bottomed boat is remarkable, has the high-speed boat of ramping angle for the bottom, ramping angle hour, Air Injection Drag Reduction still produces effect; When ramping angle is big, just need be to transforming at the bottom of the ship.If to transforming at the bottom of the ship, when device for generating air curtain was jet, gas was always from the little place ejection of pressure, and simultaneously, being less than stern along the air-flow of the oblique rising of hull bottom will overflow from two sides of a ship, thereby the air curtain that covers the ships and light boats bottom is difficult to form.But can influence the bottom lifting surface at the bottom of the improved ship again, some variations also can take place in the floading condition of hull.
Chinese patent 200920228296.7 has obviously been noticed this problem, and its technical scheme that adopts is: be made up of pressure regulator, cavity, cavity admission port, source of the gas, connecting tube, deflecting plate, spout, subdivision division board; Cavity is divided into several pods by the subdivision division board along transversal surface, and each subdivision has the cavity admission port, and the cavity admission port links to each other with connecting tube respectively; Connecting tube links to each other with source of the gas, is equipped with pressure regulator therebetween; Cavity is installed in mobile inside; Cavity is except import and spout, and all the other positions seal; The bottom outside molded lines of cavity and mobile outside molded lines adapt and form integral body, and the integral body of the inner wall of all the other consolidation styles and mobile, muscles and bones structure and other devices requires to adapt.It adopts the jet mode of pocketed, the air nozzle of different elevation of water surface is sealed respectively, and the air pressure in the jet chamber is implemented control.
Though this solution can be alleviated above-mentioned contradiction, can not solve root problem.Because " the bottom outside molded lines of cavity and mobile outside molded lines adapt and form integral body; cavity is divided into several pods by the subdivision division board along transversal surface; each subdivision has the cavity admission port "; The setting of its air nozzle still is provided with along cavity ramping angle direction in fact, only is separated into several portions, so the pressure on each hole of air nozzle all is different; Gas can only spray from a less spout of pressure, can't form the uniform and stable gas-bearing formation that covers whole mobile bottom.
Summary of the invention
The utility model provides a kind of high-speed boat Air Injection Drag Reduction device, with overcome that prior art exists can not form uniform and stable gas-bearing formation and cost is high, make the problem of difficulty.
To achieve these goals, the technical scheme of the utility model employing is:
A kind of high-speed boat Air Injection Drag Reduction device comprises induction part, pressure control partial sum device for generating air curtain; Induction part comprises source of the gas and gas line; Pressure control partly comprises pressure regulator, and device for generating air curtain comprises jet chamber, and jet chamber is provided with admission port and fumarole; Said induction opening is connected with source of the gas through gas line, and pressure regulator is arranged on the gas line, it is characterized in that: the fumarole on the said jet chamber is along same horizon setting.
Above-mentioned gas line is provided with boiler check valve near an end of induction opening.Boiler check valve can stop current to pour in the Air Injection Drag Reduction apparatus system when device for generating air curtain is not jet.
The air nozzle place of above-mentioned device for generating air curtain is provided with pressure sensor.But the pressure that this device for generating air curtain of pressure sensor on-line monitoring is outer is so that regulate the whiff pressure of this device for generating air curtain at any time.
With respect to prior art, the utlity model has following advantage:
1, fumarole is parallel to the horizon setting, makes dark " V " type ship body needn't change the flat Air Injection Drag Reduction technology of also using into; And can produce uniform air curtain.
2, when ships and light boats navigate by water at a high speed, primer at the bottom of the part ship, be exposed to the above device for generating air curtain of the water surface and stop jetly, reduced energy consumption.
3, device for generating air curtain is simple in structure, is difficult for et out of order, and convenient and protruding stage structure matches.
When 4, under marine environment, using, spray orifice or spray seam can be stopped up by marine life, and device for generating air curtain can be changed separately, is convenient to maintenance and maintenance, reduces maintenance cost.
Description of drawings
Longitudinal center's cutaway view of Fig. 1, the utility model entire arrangement;
The protruding rank of the first order of Fig. 2, the utility model entire arrangement transverse sectional view;
Protruding rank, the second stage of Fig. 3, the utility model entire arrangement transverse sectional view;
Fig. 4, be the scheme drawing of a device for generating air curtain;
Among the figure: 1-hull; 2-induction opening; 3-source of the gas; 4-gas line; 5-pressure regulator; 6-jet chamber; 7-fumarole; 8-pressure sensor; 9-boiler check valve; 10-vertical chine strip, the protruding rank of the 11-first order, protruding rank, the 12-second stage, 13-subdivision division board.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is further specified.
Referring to Fig. 1-Fig. 4, a kind of high-speed boat Air Injection Drag Reduction device comprises induction part, pressure control partial sum device for generating air curtain; Induction part comprises source of the gas 3 and gas line 4; Pressure control partly comprises pressure regulator 5, and device for generating air curtain comprises jet chamber 6, and jet chamber is provided with admission port 2 and fumarole 7, and fumarole 7 is arranged on jet chamber 6 on the face of stern direction; Said induction opening 2 is connected with source of the gas 3 through gas line 4, and pressure regulator 5 is arranged on the gas line 4, and the fumarole 7 on the said jet chamber 6 is along same horizon setting.
During use; The gas that source of the gas 3 provides gets into gaseous tension control cock 5 through gas line 4; Because the pressure of any one device for generating air curtain present position all is dynamic, the pressure data that pressure-modulation valve 5 is passed back according to pressure sensor 8, adjustment air pressure; Make it to meet the required pressure of this device for generating air curtain, ejection from fumarole 7 at last.Said pressure sensor 8 is connected with micro controller system, and the pressure that the on-line monitoring device for generating air curtain is outer is so that regulate at any time.According to the spout external pressure that pressure sensor records, the whiff pressure of adjustment jet system makes whiff pressure greater than the spout external pressure.
That is: P
System ＞P
Outside the spout
Learn by test: 2 P
Outside the spout ＞P
System ＞1.1P
Outside the spout Guarantee the gaseous tension meet requirements.
Be installed in the boiler check valve 9 between gaseous tension control cock 5 and the jet chamber 6, can when device for generating air curtain is not jet, stop current to pour in the Air Injection Drag Reduction apparatus system.
During actual the use, different according to the length of ships and light boats, the protruding rank of secondary longitudinally are set in its bottom surface, and (or secondary is with the epirelief rank.This sentences the protruding rank of secondary is that example is done explanation); Said device for generating air curtain; Be installed on the place 11, the protruding rank of the first order and protruding rank 12, the second stage of hull bottom respectively; Place, first order boss rank cross-sectional plane is as shown in Figure 2: device for generating air curtain is divided into several jet chambeies 6 by subdivision division board 13 along transversal surface, and each jet chamber 6 has induction opening 2 and air nozzle 7, and the fumarole 7 on the jet chamber 6 is along same horizon setting; Place, second boss rank cross-sectional plane is as shown in Figure 3; The gassing current that produces of the device for generating air curtain at place, protruding rank, the second stage like this, the loss that can replenish the protruding rank of the first order 11 gassing current has improved the air curtain coverage rate, thereby makes air curtain cover the ships and light boats bottom as much as possible.Ships and light boats are when operation, because flow action has formed the hole after faulted-stage, the regional area at faulted-stage rear exists zone of negative pressure, and the hole strengthens the effect of Air Injection Drag Reduction.The Air Injection Drag Reduction device is arranged on this zone, helps realizing main frame underwater exhaust or negative pressure air feed.
Claims (3)
1. a high-speed boat Air Injection Drag Reduction device comprises induction part, pressure control partial sum device for generating air curtain; Induction part comprises source of the gas (3) and gas line (4); Pressure control partly comprises pressure regulator (5), and device for generating air curtain comprises jet chamber (6), and jet chamber (6) are provided with admission port (2) and fumarole (7); Said induction opening (2) is connected with source of the gas (3) through gas line (4), and pressure regulator (5) is arranged on the gas line (4), it is characterized in that: the fumarole (7) on the said jet chamber (6) is along same horizon setting.
2. a kind of high-speed boat Air Injection Drag Reduction device as claimed in claim 1 is characterized in that: said gas line (4) is provided with boiler check valve (9) near an end of induction opening (2).
3. according to claim 1 or claim 2 a kind of high-speed boat Air Injection Drag Reduction device, it is characterized in that: the air nozzle place of said device for generating air curtain is provided with pressure sensor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120401105XU CN202295215U (en) | 2011-10-20 | 2011-10-20 | Air curtain resistance reducing device for high speed craft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120401105XU CN202295215U (en) | 2011-10-20 | 2011-10-20 | Air curtain resistance reducing device for high speed craft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202295215U true CN202295215U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120401105XU Expired - Fee Related CN202295215U (en) | 2011-10-20 | 2011-10-20 | Air curtain resistance reducing device for high speed craft |
Country Status (1)
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|---|---|
| CN (1) | CN202295215U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105059468A (en) * | 2015-07-28 | 2015-11-18 | 哈尔滨工程大学 | Air-curtain bow sealing structure |
| CN105947105A (en) * | 2016-04-28 | 2016-09-21 | 中国船舶重工集团公司第七〇九研究所 | Mucus drag reduction device for underwater vehicle |
| CN106005242A (en) * | 2016-05-27 | 2016-10-12 | 武汉理工大学 | Air-lubricated ship |
| CN107416128A (en) * | 2017-09-12 | 2017-12-01 | 湖南三环船舶工程有限公司 | Siphon gas slides energy-conservation ship |
| CN108346360A (en) * | 2017-01-23 | 2018-07-31 | 天津开发区兴衡石油机械配件有限公司 | A kind of seabed air curtain generator |
| CN110949603A (en) * | 2019-12-09 | 2020-04-03 | 中船重工（上海）节能技术发展有限公司 | Electrical control system and method suitable for gas layer drag reduction ship |
| CN111532371A (en) * | 2020-05-26 | 2020-08-14 | 西北工业大学 | Small-sized micro-bubble generator and method |
| CN114034464A (en) * | 2021-10-28 | 2022-02-11 | 中国舰船研究设计中心 | Verification test system for real-scale cabin air curtain noise reduction technology |
-
2011
- 2011-10-20 CN CN201120401105XU patent/CN202295215U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105059468A (en) * | 2015-07-28 | 2015-11-18 | 哈尔滨工程大学 | Air-curtain bow sealing structure |
| CN105947105A (en) * | 2016-04-28 | 2016-09-21 | 中国船舶重工集团公司第七〇九研究所 | Mucus drag reduction device for underwater vehicle |
| CN106005242A (en) * | 2016-05-27 | 2016-10-12 | 武汉理工大学 | Air-lubricated ship |
| CN108346360A (en) * | 2017-01-23 | 2018-07-31 | 天津开发区兴衡石油机械配件有限公司 | A kind of seabed air curtain generator |
| CN107416128A (en) * | 2017-09-12 | 2017-12-01 | 湖南三环船舶工程有限公司 | Siphon gas slides energy-conservation ship |
| CN110949603A (en) * | 2019-12-09 | 2020-04-03 | 中船重工（上海）节能技术发展有限公司 | Electrical control system and method suitable for gas layer drag reduction ship |
| CN111532371A (en) * | 2020-05-26 | 2020-08-14 | 西北工业大学 | Small-sized micro-bubble generator and method |
| CN114034464A (en) * | 2021-10-28 | 2022-02-11 | 中国舰船研究设计中心 | Verification test system for real-scale cabin air curtain noise reduction technology |
| CN114034464B (en) * | 2021-10-28 | 2024-05-10 | 中国舰船研究设计中心 | Verification test system for real-scale cabin air curtain noise reduction technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20141020 |
|
| EXPY | Termination of patent right or utility model |