CN203005687U - Ship body based on straight stem - Google Patents
Ship body based on straight stem Download PDFInfo
- Publication number
- CN203005687U CN203005687U CN201220584372XU CN201220584372U CN203005687U CN 203005687 U CN203005687 U CN 203005687U CN 201220584372X U CN201220584372X U CN 201220584372XU CN 201220584372 U CN201220584372 U CN 201220584372U CN 203005687 U CN203005687 U CN 203005687U
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- Prior art keywords
- stem
- ship
- straight
- reduced
- ship body
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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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- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The utility model discloses a ship body based on a straight stem. A forward perpendicular of the stem is transited to a lower portion ship body in a vertical line mode, so that the front of the stem is in a straight line shape and is arranged with the ship bottom by a near right angle. Compared with a classic linear ship in the prior art, the ship body with the straight-type stem has the advantages that the forward perpendicular is near the front, a linear flow inlet section is long, bonding and pressing resistance is reduced; a bulbous bow does not exist, a section is near a V shape, a wet area is reduced, and friction resistance is reduced; a waterline is narrowed, a reflected wave is greatly reduced, and wave resistance is reduced; and the linear bending form of the head portion is simple, and construction difficulty and building cost are greatly reduced. The ship body based on the straight stem is particularly suitable for mainstream low-speed ships such as oil carriers and bulk carriers.
Description
Technical field
The present invention relates to ship type design field, more particularly, relate to the design of stem.
Background technology
Global oil price is high at present looks forward to, and shipping company's cost pressure is huge, and operation of ship market is day by day strong to the demand of economical ship type.Good Alignment Design can effectively reduce ship resistance, improve ship speed, reduces energy consumption, day by day is subject to shipyard and shipowner's attention.
The bow outline of prior art main flow ship type mostly adopts ball bow form (as illustrated in fig. 1 and 2), the favourable interference of water surface waveform generation when being intended to make ship's navigation, thereby the wave making resistance of reduction boats and ships.Number in the figure 1 is bulbous bow.For main flow low speed boats and ships (oil carrier, bulge carrier), the shared boats and ships total drag of wave making resistance proportion is less, the resistance form that proportion is larger is friction drag and viscous pressure resistance, how effectively to reduce this two kinds of resistance components, has more practical significance concerning the main flow low powered.
Summary of the invention
The present invention adopts straight bow design, namely cancels bulbous bow.Can significantly reduce sticking the pressure and friction drag, slightly improve wave making resistance, reduce total drag; Correspondingly improve the speed of a ship or plane.Simultaneously, reduce difficulty of construction, improved efficiency of construction.The present invention is intended to develop a kind of novel ship bow outline, compares with existing ship, reduces ship resistance, reduces oil consumption, cuts operating costs.
In order to achieve the above object, the invention provides a kind of hull based on straight bow design, the fore perpendicular of described stem transits to bottom hull with vertical line style, thereby the stem front end becomes the vertical straight line style, is the setting of nearly right angle with hull bottom.
Under optimal way, compare with prior art bulbous bow type ship body, establish L and be the fore perpendicular of prior art hull form scheme to boats and ships distance foremost; If L
1To the distance between the fore perpendicular of prior art hull form scheme, need to satisfy 0.2＜L for the fore perpendicular of straight bow design hull this moment
1/ L＜1.
The straight type bow of the present invention line style is compared with the typical line style of prior art boats and ships, and following beneficial effect is arranged:
1. fore perpendicular is more forward, and the entrance of vessel of line style is longer, has reduced viscous pressure resistance;
2. first without ball, body lines has reduced wetted surface more near V-type, has reduced friction drag;
3. waterline is more sharp thin, significantly reduces backward wave, has reduced wave drag;
4. the bent type of stem line style is simpler, has greatly reduced difficulty of construction and laid down cost.
In sum, after taking straight type bow line style, reduced ship resistance, improved the speed of a ship or plane, reduced oil consumption, the shipowner has been improved the economic performance of ship's navigation.Simultaneously, because construction is simple, reduced again the laid down cost of shipyard.The present invention is particularly useful for main flow low speed boats and ships, as oil carrier, bulge carrier etc.
Description of drawings
Fig. 1 is the typical line style lateral plan of prior art boats and ships.
Fig. 2 is the typical line style birds-eye view (half that omission is symmetrical) of prior art boats and ships shown in Figure 1.
Fig. 3 is the line style lateral plan of the straight type bow of hull of the present invention line style
Fig. 4 is the birds-eye view (half that omission is symmetrical) of the straight type bow of hull of the present invention shown in Figure 3 line style.
Fig. 5 is the typical line style lateral plan contrast effect figure of the present invention's straight type bow line style and prior art boats and ships.
The specific embodiment
The present invention is satisfying under the Ship's Principal Dimensions limiting condition, considers to satisfy the comprehensive benchmark of method of ship floating condition, stability and intensity, has developed a kind of brand-new boats and ships bow ew line type.Be characterized in abandoning using bulbous bow, adopt straight type bow.As shown in Fig. 3 and 4, contrast prior art ship type Fig. 1 and Fig. 2 explanation.In figure, solid line represents the stem line style of straight type bow, and dotted line represents the typical line style of prior art boats and ships.
Compare with the typical line style of prior art boats and ships, cancelled bulbous bow in straight type bow line style, the fore perpendicular that moved forward keeps displacement constant, can not affect the cargo-carrying ability of boats and ships.
Illustrate as shown in Figure 2, in figure, solid line represents the typical line style of present boats and ships, and dotted line represents Ship Hull Lines of the present invention.By adopting straight type bow, optimized the molded line of entrance of vessel, significantly reduce backward wave simultaneously, reduced ship resistance, improved the speed of a ship or plane, improved the navigation economic performance.
In figure, two kinds of line style scheme contrasts, principal parameter is as follows:
0.2<L
1/L<1
L---the fore perpendicular of prior art typical case line style scheme is to boats and ships distance foremost;
L
1---ship type fore perpendicular of the present invention is to the distance between the fore perpendicular of prior art typical case line style scheme.
Adopt the principle of bulbous bow drag reduction as follows:
Reduce wave making resistance.High speed ship for Fr between 0.27-0.34, as ball nose size and location-appropriate, in certain speed range, favourable interference effect may occur in first wave system and the hull wave system that produces of ball nose, and the wave height of composite wave will reduce, and wave making resistance descends;
Reduce bilge-eddy resistance.At the full formed ship below 0.20, at full load reduces stem bilge whirlpool, reduces wave breaking resistance during ballast for Fr.Can make current be bordering on radial symmetry and flow, the bow bottom does not produce vortex movement, reduces resistance and reduces to bury the purpose that appears elephant for the first time thereby reach.
Reduce wave breaking resistance.For low speed hypertrophy boats and ships, as first in adopting the ball nose, the more common bow person of its resistance is high when low speed, when higher speed, can show larger drag-reduction effect.It is very little that this type of ship wave making resistance accounts for total drag proportion, but because bow section streamflow regime worsens, so wave breaking resistance is quite obvious.After installing the ball bow additional, the hull stem is protracted, and makes the gradient of this place's prismatic curve and stem waterline enter the angle and reduces, and has greatly improved near the distribution of pressure bar stem, has relaxed bow breaker situation.Therefore, the ball bow has improved the wave breaking resistance of navigating by water at a high speed in the ballast situation.
As seen, according to above-mentioned theory, for the high speed boats and ships, the ball bow can improve the total drag of full loaded and ballast conditions.But for Low Speed Full Ships, to account for total drag proportion very little because of wave making resistance, and ship's speed is lower simultaneously, and wave breaking resistance is little, DeGrain.
The above; only be the better specific embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (1)
1. the hull based on straight bow design, is characterized in that, the fore perpendicular of described stem transits to bottom hull with the vertical curve form, thereby the stem front end becomes the vertical straight line style;
Compare with prior art bulbous bow type ship body, establish L and be the fore perpendicular of prior art hull form scheme to boats and ships distance foremost; If L
1To the distance between the fore perpendicular of prior art hull form scheme, need to satisfy 0.2＜L for the fore perpendicular of straight bow design hull this moment
1/ L＜1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220584372XU CN203005687U (en) | 2012-11-08 | 2012-11-08 | Ship body based on straight stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220584372XU CN203005687U (en) | 2012-11-08 | 2012-11-08 | Ship body based on straight stem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203005687U true CN203005687U (en) | 2013-06-19 |
Family
ID=48597305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220584372XU Expired - Lifetime CN203005687U (en) | 2012-11-08 | 2012-11-08 | Ship body based on straight stem |
Country Status (1)
| Country | Link |
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| CN (1) | CN203005687U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2566321C1 (en) * | 2014-07-21 | 2015-10-20 | Евгений Николаевич Хрусталёв (патентообладатель) | Method of increase of vessel speed and device for its implementation |
| TWI585004B (en) * | 2014-09-05 | 2017-06-01 | 台灣國際造船股份有限公司 | Bow structure of ship |
| CN107499451A (en) * | 2017-08-23 | 2017-12-22 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | A kind of bow and liquefied gas ship for improving cargo tank capacity |
| CN107521615A (en) * | 2017-08-23 | 2017-12-29 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | A kind of high handling and the bow and high-performance ship of sea-keeping |
| CN113548147A (en) * | 2021-09-02 | 2021-10-26 | 中国船舶科学研究中心 | Bulk cargo ship with comprehensive energy-saving effect meeting EEDI high-stage requirements |
-
2012
- 2012-11-08 CN CN201220584372XU patent/CN203005687U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2566321C1 (en) * | 2014-07-21 | 2015-10-20 | Евгений Николаевич Хрусталёв (патентообладатель) | Method of increase of vessel speed and device for its implementation |
| TWI585004B (en) * | 2014-09-05 | 2017-06-01 | 台灣國際造船股份有限公司 | Bow structure of ship |
| CN107499451A (en) * | 2017-08-23 | 2017-12-22 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | A kind of bow and liquefied gas ship for improving cargo tank capacity |
| CN107521615A (en) * | 2017-08-23 | 2017-12-29 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | A kind of high handling and the bow and high-performance ship of sea-keeping |
| CN113548147A (en) * | 2021-09-02 | 2021-10-26 | 中国船舶科学研究中心 | Bulk cargo ship with comprehensive energy-saving effect meeting EEDI high-stage requirements |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |
|
| CX01 | Expiry of patent term |