CN101659314A - Method of resistance reduction and energy conservation and speed increase for ship vacuole layer - Google Patents
Method of resistance reduction and energy conservation and speed increase for ship vacuole layer Download PDFInfo
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- CN101659314A CN101659314A CN200910195421A CN200910195421A CN101659314A CN 101659314 A CN101659314 A CN 101659314A CN 200910195421 A CN200910195421 A CN 200910195421A CN 200910195421 A CN200910195421 A CN 200910195421A CN 101659314 A CN101659314 A CN 101659314A
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- vacuole
- spray
- working medium
- ship
- vacuole layer
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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
Abstract
A method of resistance reduction and energy conservation and speed increase for a ship vacuole layer aims at reducing motion resistance of a ship, improving a general energy efficiency ratio and an original time navigational speed value, thus achieving the purpose of energy conservation and reduced operation cost. In the method, an ejector component is used for transporting working substance for generating a vacuole layer between an appropriate area outside the ship and sea channel water; the best setting area of the vacuole layer is the largest area of motion resistance of the ship, and totalamount of the vacuole layer is automatically controlled; the area where discrete vacuole of the vacuole layer can not enter is an efficacy area of an acting force of a propeller at the ship tail in any mode; the ejector component above a practical waterline is closed automatically when the ship is not in full load; and the ejector component is automatically closed due to decompression of the working substance. The invention also provides four ejector structure diagrams with different performances as follows: a jet pump in Figure 3, a jet barrel in Figure 4, a jet gun in Figure 5 and a jet bolt in Figure 6; and the small high-density vacuole layer with a long stroke and even distribution is a good-quality vacuole layer, while the large vacuole easily going out is bad-quality vacuole.
Description
Technical field
The present invention relates to the method for ship's navigation drag reduction, specifically is about generating vacuole layer between external table of boat and the navigation channel water, to play the method that reduces the ship motion resistance.
Background technology
It is reported that propose the drag-reduction energy-saving and the speed increasing method of hull vacuole layer, the present invention still belongs at first, and the solids of broad sense surface Research of Drag Reduction achievement is existing what is heard.In on March 26th, 2009 " newspaper is translated in Shanghai " the 9th edition " the superpower buoyant material of China's exploitation " literary composition, reported report, the porous copper mesh plate new material achievement in research Chinese Harbin Institute of Technology, that in solution such as silver nitrate, soaked of U.S.'s " science " magazine, and point out significantly to be reduced in the resistance of motion in the sky G﹠W by this super buoyant material.Certainly, the method for drag reduction and mechanism form thereof in the solids surface water of the present invention, with Harbin Institute of Technology all be different.But positive effect of the present invention is, the external table of boat, constantly generate the slight drag gradient vacuole layer that not dialysis is gone, substituted the navigation channel water of big resistance gradient boundaries layer.And the weak point of Harbin Institute of Technology's new material is, as said in the report: this material " can't be realized large-scale application ".
Summary of the invention
The technical problem to be solved in the present invention is, generate vacuole layer between the appropriate area of the external table of vessel underway and the navigation channel water, be used to reduce the resistance of motion of hull, to improve total Energy Efficiency Ratio of boats and ships, improve speed of a ship or plane value and conveying efficiency thereof when former, reach energy-conservation and reduce the purpose of shipping cost from face.Scheme is as follows.
Method of the present invention is between the appropriate area and navigation channel water of hull appearance, and complete equipment prior art or air feed and water supply that adapt with it with the working medium eductor of this case, or the complete equipment of air feed only are defeated by that the working medium that generates cavity implements; The best setting area of vacuole layer be the zone of boat body resistance of motion maximum, and the cavity total amount that it is defeated by is again self controllable; The discrete bubbles of vacuole layer can not enter the district, is stern effect any type of, especially propeller application force district; Boat is at full load not, and actual supernatant working medium eductor is that automatic control is closed, otherwise is that automatic control is opened; During the working medium decompression, independently close, otherwise be autonomous the unlatching in the working medium injector assembly; The working medium eductor of four kinds of different performances, Fig. 3 is the spray pump, this be a kind of pressurized air in spray chamber, spray the working medium eductor be lower than the pressure water that air presses, Fig. 4 is the spray tube, this is that a kind of pressurized air is in outlet nozzle, injection is lower than the working medium eductor of the pressure water of air pressure, Fig. 5 is a spray gun, this be a kind of pressurized air in outlet nozzle, spray the working medium eductor of navigation channel water, Fig. 6 is the spray bolt, and this is the working medium eductor of a kind of pressurized air as single working medium output; Premium-quality vacuole layer is the little vacuole layer of a kind of high density long travel well-distributed, otherwise the big cavity of leaving away easily is a bubble inferior.
Enforcement of the present invention has the prior art of relating to supporting: when spray pump that uses this case or spray tube, must dispose 6MPa or above gas feeder and its control system and 4MPa or above water service and its control system; Use spray gun or spray bolt, must configuration 6MPa or above gas feeder and its control system.And control system can be DDC, but also SPC.
Good effect of the present invention is: can effectively improve total Energy Efficiency Ratio of boat, effectively improve speed of a ship or plane value and conveying efficiency thereof when former, thereby reach energy-conservation and reduce the purpose of operating cost; This method can be used in the new ship design, and the technology upgrading that also can be advantageously used in obsolete vessel is transformed; After using this method, cost recovery is fast, and carrying cost is low, the inputoutput height.
Description of drawings
Fig. 1 is the layout scheme drawing of working medium eductor.
Fig. 2 is the local schematic flow sheet in eductor controlling point, and promptly only expression can utilize existing control technology, realizes the manipulation that cavity total amount and the automatic control of the above working medium eductor of waterline open and close.
Fig. 3 is a spray pump configuration scheme drawing, represents a kind of manufacture of high-quality working medium.
Fig. 4 is a spray barrel structure scheme drawing, represents a kind of manufacture than high-quality working medium.
Fig. 5 is the spray gun structure scheme drawing, represents a kind of and is used to supply with pressurized air, but exportable globule mist working medium and can generate the manufacture of little cavity.
Fig. 6 is a spray stud structure scheme drawing, represents a kind ofly to be used for the voltage supply air that contracts, and with its manufacture as single working medium.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiments of the invention, as follows.
Described hull vacuole layer drag reduction method, present embodiment is in the zone suitable outside hull, with a kind of rational perforate configuration, with the spray of the working medium in this case pump, protruding in the cabin, spout is towards stern and welding, and make it to constitute with cabin in air feed, water service and its DDC control system implement.Fig. 1 eductor is arranged scheme drawing, has provided a kind of configuration that the spray pump is arranged in the present embodiment, and wherein (1) is spray pump layout points, and (2) are the working medium angle of sprays, and (3) are the cavitys that generates.The layout density of spray pump outside hull is 1.1/M
2
The best setting area of described vacuole layer is the zone of ship motion resistance maximum.Present embodiment is that navigation channel, hull forebody both sides water is met the tangent plane zone.And the automatic control of cavity total amount utilizes prior art to realize, can be illustrated by Fig. 2.The local schematic flow sheet in Fig. 2 eductor controlling point, (6) DDC centring control machine, behind the instantaneous value of its acceptance (8) and (9) on-the-spot tank dome and the output of on-the-spot water bag pressure power transmitter, with DDC setting value artificial or that preset relatively after, make (10) and (11) to regulate and cut down on-the-spot (2) tank dome of adjusting respectively and (3) water bag pressure power, directly only make (4H) of underwater this moment and (5L) spray pump work substance output total amount only to reach controlling valu.
And will achieve the above object, be that air feed water service and its DDC control system that will dispose prior art realizes.The parameter that the present provides air feed and water service is:
Pressure-controlled value 8MPa/max in total gas bag voltage stabilizing setting value 10MPa spray pump;
Pressure-controlled value 6MPa/max in total water bag voltage stabilizing setting value 8MPa spray pump.
In the inventive method, the configuration of automatic control technology is necessary, is a kind of optimal way of hull drag-reduction energy-saving and speedup, shows as:
In the present embodiment, it is not zero with the active section initial point of hydraulic pressure in the spray pump that DDC will solve the air pressure: air is pressed the value of providing 0%=5MPa, so active section 0～100%=5～8MPa; So the hydraulic pressure value of providing 0%=3MPa is active section 0～100%=3～6MPa;
DDC should be provided with the ratio regulatory function.Air is pressed 5～8MPa and the hydraulic pressure 3～6MPa accent magnitude relation between the two, can be linear relationship, also can be nonlinear relationship;
DDC should be provided with adaptive control function.No matter boat navigates by water in which kind of speed of a ship or plane, and the air pressure that can both search the spray pump is voluntarily regulated setting value with the optimum ratio of hydraulic pressure;
DDC should be provided with the unit controllable function to air compressing device group and pumping plant group, and the generator protection function;
DDC has had controllable function, also management function should be set.
In the present embodiment, also must pay close attention to the cooperation of existing welding technique, focus:
Spray pump mounting hole on the hull, unavailable wind welding gun and electrode holder perforate are used air pressure gun brill or electric drill perpendicular to the hull surface perforate;
Spray pump mounting hole internal diameter on the hull should be greater than 20 μ of the outer warp of spray pump head;
The spray pump head in board all should weld the neighboring, and must select for use the trade mark of welding rod to weld by standard;
During the welding of spray pump, the spray pump housing of a side should serially add the annular arrangement reinforcement pasting board of weldering lastblock respective thickness in the cabin;
Spraying the pump attachment point, should leave the distance of hull assembly unit steel plate weld seam 〉=20CM, is the foreign country wheel, also must consider to do the work that stress is handled.
Described boat is at full load not, and supernatant working medium injector assembly is that automatic control is closed, otherwise is that automatic control is opened.And this work also utilizes the DDC prior art to realize, can be illustrated by Fig. 2.The local schematic flow sheet in Fig. 2 eductor controlling point, if (4H) spray pump assembly is the above eductor of waterline because of ship is not fully loaded with to form this moment, then (6) be DDC, it be by (7) differential pressure transmitter record (4H) spray pump be positioned at supernatant, so make (12H) and (13H) two formulas of air and water regulate to cut down and close, otherwise then again automatic control open.
And among Fig. 2, (2) and (3) then are respectively pressurized air subpackage and moisture bag, (5L) are the spray pump stratoses of expression underwater, (1) expression hull, (16) expression navigation channel water.
During the working medium decompression, the working medium input end of eductor is independently closed, otherwise is autonomous the unlatching in the described eductor.Present embodiment sprays the input end of the empty G﹠W of pump, all has been connected in series non-return the cutting down of commercially available mechanical type of a corresponding size separately.
Described working medium eductor, spray pump in the present embodiment, as seen Fig. 3 sprays the pump configuration scheme drawing, and wherein (1) is the spray pump housing, and (2) are intake cranes, (3) be the spray pump cover, (4) spray pump cover fastening screw keyhole, the non-return interface that cuts down of (5) air inlet, the non-return interface that cuts down of (6) water inlet, (7) spray chamber, (8) working medium delivery port.It is characterized in that air and water enter (1) pump housing from (5) and (6) respectively, and after spray chamber (7) is finished blast injection and is lower than the pressure water that air presses, from spray pumping hole (8) output composite work medium.The basic specification of spray pump is:
The material corrosion-resistant steel
Withstand voltage 14MPa
Stretch out the shower nozzle diameter 42mm of hull
Stretch out the outer sprinkler height 10mm of hull
The working medium thickness 3mm at spray pump spout place
120 ° of the working medium sector angles at spray pump spout place
The circulating capacity of air and water was than 4: 1 in the spray pump
The invention process exception also can:
Described vacuole layer can not enter the district, be stern effect any type of, especially propeller application force district.So all this principles that conforms to, the setting of its working medium eductor the set zone, can suitably expand other appropriate area in present embodiment.
The working medium eductor of described four kinds of different performances the spray pump in embodiment, also has the spray tube that must air feed supplies water and spray gun and spray bolt that need only air feed.Be respectively:
Fig. 4 is a spray barrel structure scheme drawing, and wherein (1) is the spray cylindrical shell, (2) spray cover, and (3) spray cover fastening screw keyhole, (4) add piece installing, the non-return interface that cuts down of (5) air inlet, the non-return interface that cuts down of (6) water inlet, (7) water spray road, (8) working medium delivery port.The base feature is, it be a kind of pressurized air in outlet nozzle, spray the working medium eductor be lower than the pressure water that air presses.
Fig. 5 is the spray gun structure scheme drawing, and wherein (1) is gun body, (2) spray gun lid, (3) spray gun bolt of cover setting hole, the non-return interface that cuts down of (4) air inlet, (5) navigation channel water inlet, (6) navigation channel water inlet groove, (7) working medium delivery port.It is characterized in that it is a kind of pressurized air is sprayed navigation channel water in nozzle a working medium eductor.
Fig. 6 is a spray stud structure scheme drawing, and wherein (1) is the spray key, (2) spray stopper, (3) spray stopper fastening screw keyhole, the non-return interface that cuts down of (4) air inlet, (5) working medium grid, (6) working medium delivery port.It is characterized in that it is the eductor that a kind of pressurized air is directly exported as single working medium.
Claims (9)
1, a kind of drag-reduction energy-saving of hull vacuole layer and speed increasing method is characterized in that, between the appropriate area of hull outside and navigation channel water, with the injector assembly of this case, are defeated by that the working medium of generation vacuole layer implements.
According to the described method of claim 1, it is characterized in that 2, the best setting area of vacuole layer be the zone of boat body resistance of motion maximum, and the total amount of cavity is automatic control.
According to the described method of claim 1, it is characterized in that 3, the discrete bubbles of vacuole layer can not enter the district, is stern effect any type of, especially propeller propelling unit application force district.
4, according to claim 1 and 2 described methods, it is characterized in that boat is at full load not, actual supernatant injector assembly is that automatic control is closed, otherwise is that automatic control is opened.
5,, when it is characterized in that in the injector assembly working medium decompression, independently close, otherwise be autonomous the unlatching according to claim 1 and 2 described methods.
According to claim 1 and 2 described methods, it is characterized in that 6, a kind of working medium eductor of spray pump by name is pressurized air is sprayed the pressure water that is lower than the air pressure in spray chamber after, the output of formation composite work medium.
7, according to claim 1,2 and 6 described methods, it is characterized in that, a kind of working medium eductor of spray tube by name, be pressurized air in outlet nozzle, spray be lower than the pressure water that air presses after, form composite work medium output.
8, according to claim 1,2 and 6 described methods, it is characterized in that, a kind of working medium eductor of spray gun by name, be pressurized air in outlet nozzle, spray navigation channel water after, form composite work medium output.
9, according to claim 1,2 and 6 described methods, it is characterized in that a kind of working medium eductor of spray bolt by name, be that pressurized air is as the directly output of single working medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910195421A CN101659314A (en) | 2009-09-10 | 2009-09-10 | Method of resistance reduction and energy conservation and speed increase for ship vacuole layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910195421A CN101659314A (en) | 2009-09-10 | 2009-09-10 | Method of resistance reduction and energy conservation and speed increase for ship vacuole layer |
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| CN101659314A true CN101659314A (en) | 2010-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910195421A Pending CN101659314A (en) | 2009-09-10 | 2009-09-10 | Method of resistance reduction and energy conservation and speed increase for ship vacuole layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918614A (en) * | 2021-01-22 | 2021-06-08 | 中国人民解放军国防科技大学 | Supercavitation navigation body and cavitation bubble flow control method adopting wake flow injection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109681A (en) * | 1993-05-11 | 1995-10-04 | 加藤洋治 | Method of reducing friction on cruising body, cruising body with reduced friction, method of and apparatus for generating microbubbles for use in reduction of friction |
| JPH09156575A (en) * | 1995-12-04 | 1997-06-17 | Yoji Kato | Friction resistance reduction ship |
| CN1208128A (en) * | 1997-08-01 | 1999-02-17 | 石川岛播磨重工业株式会社 | Generation of bubbles for friction-reducing ship and method for reducing skin-friction |
| CN1363500A (en) * | 2002-02-05 | 2002-08-14 | 周勃 | Jet air-cushion ship with higher speed |
-
2009
- 2009-09-10 CN CN200910195421A patent/CN101659314A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109681A (en) * | 1993-05-11 | 1995-10-04 | 加藤洋治 | Method of reducing friction on cruising body, cruising body with reduced friction, method of and apparatus for generating microbubbles for use in reduction of friction |
| JPH09156575A (en) * | 1995-12-04 | 1997-06-17 | Yoji Kato | Friction resistance reduction ship |
| CN1208128A (en) * | 1997-08-01 | 1999-02-17 | 石川岛播磨重工业株式会社 | Generation of bubbles for friction-reducing ship and method for reducing skin-friction |
| CN1363500A (en) * | 2002-02-05 | 2002-08-14 | 周勃 | Jet air-cushion ship with higher speed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918614A (en) * | 2021-01-22 | 2021-06-08 | 中国人民解放军国防科技大学 | Supercavitation navigation body and cavitation bubble flow control method adopting wake flow injection |
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Application publication date: 20100303 |