JPH10100985A - Ship bottom structure for reducing water frictional resistance of ship - Google Patents
Ship bottom structure for reducing water frictional resistance of shipInfo
- Publication number
- JPH10100985A JPH10100985A JP8306930A JP30693096A JPH10100985A JP H10100985 A JPH10100985 A JP H10100985A JP 8306930 A JP8306930 A JP 8306930A JP 30693096 A JP30693096 A JP 30693096A JP H10100985 A JPH10100985 A JP H10100985A
- Authority
- JP
- Japan
- Prior art keywords
- ship
- water
- partition
- air
- compressed air
- 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
Links
Classifications
-
- 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
Landscapes
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は単胴船の走行抵抗の大
部分を占める水と浸水面の水粘性摩擦抵抗を減ずる事に
よって燃費を節減し、又は速度を向上せしめる事を目的
とする船底の構造に関するものであって、特に長さの割
に巾の広い船の効果は大きい。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention aims at reducing fuel consumption or improving speed by reducing the water viscous frictional resistance between water and a flooded surface, which occupies most of the running resistance of a monohull. In particular, the effect of a ship that is wide for its length is great.
【０００２】[0002]
【従来の技術】船の走行抵抗を減ずるために、船体を水
面上に浮上させて、水の抵抗から脱出させる水中翼船、
ホーバークラフト、其他あるが何れも莫大な動力を要
し、且、小形軽量船に限られ、又、超高速を目指すもの
であって、一般船の燃費節減、又は速度向上を計るもの
ではない。2. Description of the Related Art In order to reduce the running resistance of a ship, a hydrofoil ship which raises the hull above the water surface and escapes from the water resistance,
Hovercraft, and others, require enormous power, are limited to small and light ships, and aim at ultra-high speeds, not to reduce fuel consumption or improve speed of general ships.
【０００３】[0003]
【発明が解決しようとする課題】単胴形の貨物船、油送
船其他に於いて、船の走行抵抗を減少する船形は、従来
形船では限界と謂はれ、此に応ずる船形の開発が要望さ
れている。船の走行抵抗の内、水摩擦抵抗は、大形タン
カーに於いて約９０％、大形コンテナ船に於いて約７０
％位を占めるとも称されているので、浸水面積の大部分
を占める船底の抵抗を減ずる事は有効な手段であり此を
課題とする。In a single-hull cargo ship, an oil tanker, and the like, the hull form that reduces the running resistance of the ship is said to be the limit in conventional vessels, and there is a demand for the development of a hull form corresponding to this. Have been. Of the running resistance of the ship, the water friction resistance is about 90% for large tankers and about 70% for large container vessels.
Therefore, reducing the resistance of the ship's bottom, which occupies a large part of the inundation area, is an effective means and is an issue for this.
【０００４】[0004]
【課題を解決する為の手段】本発明は此に対し、船底を
従来の平板形を改善して船底の水摩擦抵抗を、殆んど０
に近い空気摩擦と置換するもので、此の手段として、 （１）船底の平面部を側板３に囲まれた、凹形船底１′
とする。 （２）両側板３の間に、仕切板４を１〜数箇設ける。 （３）縦方向の仕切として、仕切堰５を１〜数箇所適宜
設けて、仕切堰５には傾斜部６を設ける。 （４）仕切られた各区画に圧縮空気７を充填する。 以上のように構成する。According to the present invention, on the other hand, the ship bottom is improved from the conventional flat plate so that the water friction resistance of the ship bottom is almost zero.
(1) A concave bottom 1 'in which the plane portion of the bottom is surrounded by a side plate 3.
And (2) One or several partition plates 4 are provided between both side plates 3. (3) As a vertical partition, one or several partition weirs 5 are appropriately provided, and an inclined part 6 is provided on the partition weir 5. (4) Each section is filled with compressed air 7. The configuration is as described above.
【０００５】[0005]
【作用】このように構成された船底は、平水時、各区画
に充填された圧縮空気７は、夫々側板３、仕切板４の下
端迄充満し、船底１′は水面１２′と空気層７を介して
側板３の高さだけ浮上し、直接水に接しないので、航走
すれば此の部分は空気と水の接触となり、その摩擦抵抗
は、船底と水の摩擦抵抗に比して０に近いので、概略、
浮上した船底１′の面積分だけ水抵抗を減少した事にな
る。従って此分だけ推進力が少くてすみ、燃料を節約出
来る。或は推進力を同じとすれば速度の向上となる。The bottom of the ship constructed as described above is filled with the compressed air 7 filled in each section up to the lower end of the side plate 3 and the partition plate 4 at the time of flat water, and the bottom 1 'is filled with the water surface 12' and the air layer 7 at the bottom. Rises up to the height of the side plate 3 and does not come into direct contact with the water, so that when cruising, this portion comes into contact with air and water, and its frictional resistance is 0 compared to the frictional resistance between the ship bottom and water. , So roughly,
This means that the water resistance has been reduced by the area of the bottom 1 'that floated. Therefore, the propulsion power is reduced by this amount, and fuel can be saved. Alternatively, speed is improved if the thrust is the same.
【０００６】平水時、図６の如く横断面に於いて、船体
１に横揺れのないときは船底１′には、圧縮空気７が均
等に充満し、船底１′は全面が空気接触となって、水と
の摩擦がなく前記目的を達するが、横揺れを生じたとき
に、図７の如く側板３のみで仕切板４のないときは、僅
かの横揺れに対しても、空気層７′を残し大半が漏出し
て効果が減殺される。又、側板３を高くすれば空気の漏
出を或程度防がれるが船体１が不安定となる。此を防止
する為に、図８の如く仕切板４を設ければ、図９の如く
船体１の横揺れ傾斜時にも、空気層７′は分割され、空
気の漏出は少く、船底１′は空気接触を維持して目的は
達せられる。又、側板３の高さを低くする事によって船
体の安定を保つ事が出来る。When the hull 1 is not swaying in a horizontal section as shown in FIG. 6 when the water is flat, the bottom 1 'is uniformly filled with the compressed air 7 and the entire bottom 1' is in air contact. Thus, the above-mentioned purpose is achieved without friction with water, but when the roll is generated, when only the side plate 3 is not provided with the partition plate 4 as shown in FIG. ', Most of them leak and the effect is diminished. If the side plate 3 is made higher, air leakage can be prevented to some extent, but the hull 1 becomes unstable. In order to prevent this, if the partition plate 4 is provided as shown in FIG. 8, the air layer 7 'is divided even when the hull 1 is rolled and inclined as shown in FIG. The goal is achieved by maintaining air contact. Also, the stability of the hull can be maintained by reducing the height of the side plate 3.
【０００７】船体１の縦方向については、図１０の如く
平水時、又は側板３が高いときは良いが、縦揺れが生じ
たとき、図１１の空気層７′の如く、船底１′の空気接
触部が少くなり、空気漏出が多いので、図１２のよう
に、仕切堰５を設ければ、船底１′は殆んど空気接触と
なって水抵抗を少くする。尚、此時船底の水流は矢印１
１の如くなって、仕切堰５を通過するとき、傾斜部６は
その抵抗を少くしている。[0007] The longitudinal direction of the hull 1 is good when there is flat water as shown in FIG. 10 or when the side plate 3 is high. However, when pitching occurs, the air at the bottom 1 ′ as shown in the air layer 7 ′ in FIG. Since the number of contact portions is small and air leakage is large, if the partition weir 5 is provided as shown in FIG. 12, the bottom 1 'of the ship is almost in contact with air and the water resistance is reduced. At this time, the water flow at the bottom of the ship is indicated by arrow 1.
When passing through the partition weir 5 as indicated by 1, the inclined portion 6 reduces its resistance.
【０００８】[0008]
【実施例】図３〜５に示す如く、船底構造に於いて、船
首部２，船尾部２′を残して、船底１′を側板３の高さ
だけ凹ませて、横仕切板４及び、縦仕切堰５を設ける。
このようにして船底１′は多数の凹区画を形成し、下面
開放の空気室となり、夫々の区画に圧縮空気７を充填す
るよう配管８，弁９，空気圧縮機１０を設置している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 3 to 5, in a ship bottom structure, a ship bottom 1 'is recessed by the height of a side plate 3 while leaving a bow portion 2 and a stern portion 2'. A vertical weir 5 is provided.
In this manner, the ship bottom 1 ′ forms a number of concave sections and becomes an air chamber with an open bottom surface, and the pipe 8, the valve 9, and the air compressor 10 are installed so as to fill each section with the compressed air 7.
【０００９】[0009]
【発明の効果】このようにすれば、浸水面積の大部分を
占める船底１′は、船底の水圧に相当する圧力の圧縮空
気の薄層を以て水面１２′に支持され、航走時、水の粘
性摩擦抵抗を受けず、空気と水の極めて小さい摩擦抵抗
となって推進動力を節減する。船全体としては船側の抵
抗は残るが、船底面積が大きいときは可成の燃費節減と
なる。又、同一燃費とすれば速度の向上となる。又、船
の動揺に対しても効果を持続する事が出来る。更に附帯
して次のような利点もある。 （１）側板３及び、仕切板４は船の横揺れに対して大き
な抵抗となって、揺れを少くする。 （２）仕切板４，を設ける事によって、側板３の高さを
低くし、空気層７の厚さを薄くするので、所要空気量を
少くして空気圧縮機１０の容量を小さくする。 （３）又、圧縮空気７は平水時は勿論、多少の動揺に対
しても漏洩は少く、且、急速に補充しなくても航行に差
支ないので此点からも圧縮機１０の容量は小さくてよ
い。 （４）船底の大部分が常時水と接触しないので、牡蠣、
藤壺等の附着が少い。 （５）船底塗装の寿命が延びる。 （６）船底を強化した構造となるので、座礁に対して安
全度を増加する。In this manner, the bottom 1 ', which occupies most of the inundation area, is supported on the water surface 12' with a thin layer of compressed air having a pressure corresponding to the water pressure at the bottom of the boat. It is not subject to viscous frictional resistance and has extremely low frictional resistance between air and water, saving propulsion power. Although the ship's overall resistance remains on the ship as a whole, significant fuel savings can be achieved when the ship's bottom area is large. Further, if the fuel efficiency is the same, the speed is improved. In addition, the effect can be maintained even when the ship is shaken. In addition, there are the following advantages. (1) The side plate 3 and the partition plate 4 provide a large resistance to the ship's roll, thereby reducing the rock. (2) By providing the partition plates 4, the height of the side plates 3 is reduced and the thickness of the air layer 7 is reduced, so that the required amount of air is reduced and the capacity of the air compressor 10 is reduced. (3) Also, the compressed air 7 has a small leak, not only during normal water, but also against some fluctuations, and does not interfere with navigation even if it is not rapidly refilled. It may be small. (4) Since most of the bottom of the hull does not always come in contact with water,
There are few attachments such as wisteria pots. (5) The life of the bottom coating is extended. (6) Since the structure has a reinforced ship bottom, the degree of safety against grounding is increased.
【図１】本発明の斜視図FIG. 1 is a perspective view of the present invention.
【図２】本発明の斜視図FIG. 2 is a perspective view of the present invention.
【図３】本発明実施例の側面図FIG. 3 is a side view of the embodiment of the present invention.
【図４】本発明実施例の下面より見た平面図FIG. 4 is a plan view seen from the lower surface of the embodiment of the present invention.
【図５】図４のＡ−Ａ断面図FIG. 5 is a sectional view taken along line AA of FIG. 4;
【図６】本発明の側板のみで仕切板のないとき、且、平
水時の船体横断面図FIG. 6 is a cross-sectional view of the hull of the present invention when only the side plates are used and there is no partition plate, and when the water is flat.
【図７】図６の場合横揺れしたときの船体横断面図7 is a cross-sectional view of the hull when the vehicle rolls in the case of FIG. 6;
【図８】図６に於いて仕切板を設けたときの横断面図FIG. 8 is a transverse sectional view when a partition plate is provided in FIG. 6;
【図９】図８に於いて横揺れしたときの横断面図9 is a cross-sectional view when the vehicle rolls in FIG.
【図１０】本発明の側板のみで仕切堰のない場合で、
且、平水時の縦面図FIG. 10 shows a case where only a side plate according to the present invention is used without a partition weir,
And vertical view at the time of flat water
【図１１】図１０に於いて縦揺れの場合の縦断面図11 is a longitudinal sectional view in the case of pitching in FIG.
【図１２】図１１に於いて、仕切堰を設けた場合の縦断
面図FIG. 12 is a longitudinal sectional view in the case where a partition weir is provided in FIG. 11;
１は船体 ２は船底の船首部 ２′は船底の船尾部 ３は側板 ４は仕切板 ５は仕切堰 ６は仕切堰の斜面部 ７は空気室又は空気室の圧縮空気 ７′は船体の動揺時の圧縮空気 ８は圧縮空気の配管 ９は圧縮空気の逆止弁 １０は空気圧縮機 １１は図１２の船底水流 １２は水面 １２′は船底の水面 1 is the hull 2 is the bow at the bottom 2 'is the stern at the bottom 3 is the side plate 4 is the partition plate 5 is the partition weir 6 is the slope of the partition weir 7 is the compressed air in the air chamber or air chamber 7' is the hull of the hull Compressed air at time 8 Compressed air piping 9 Compressed air check valve 10 Air compressor 11 Bottom water flow of FIG. 12 12 Water surface 12 ′ Water surface of ship bottom
Claims (2)
の周囲に側板３を設けて、船底１′が凹面を形成する
か、或は船底の船首部２及び、仝船尾部２′の中間平面
部の船底１′を側板３の高さだけ凹ませて凹面を形成
し、この凹面部に圧縮空気を充填するようにした船底の
構造。1. In a general single-hull type ship, a side plate 3 is provided around a plane portion of the bottom of the ship, and the bottom 1 'forms a concave surface, or the bow 2 of the bottom of the ship and A bottom structure in which the bottom 1 'of the intermediate plane portion 2' is recessed by the height of the side plate 3 to form a concave surface, and the concave portion is filled with compressed air.
仕切板４を、１〜数箇設け、又、縦方向の仕切として斜
面６を附した仕切堰５を適宜設け、各仕切に囲まれた下
面開放の空気室を多数形成し、各空気室に圧縮空気を充
填するようにした船底の構造。2. A method according to claim 1, wherein one or several partition plates 4 are provided between both side plates 3, and a partition weir 5 provided with a slope 6 as a vertical partition is appropriately provided. A ship bottom structure in which a number of open-bottomed air chambers surrounded by partitions are formed, and each air chamber is filled with compressed air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8306930A JPH10100985A (en) | 1996-10-01 | 1996-10-01 | Ship bottom structure for reducing water frictional resistance of ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8306930A JPH10100985A (en) | 1996-10-01 | 1996-10-01 | Ship bottom structure for reducing water frictional resistance of ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10100985A true JPH10100985A (en) | 1998-04-21 |
Family
ID=17962998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8306930A Pending JPH10100985A (en) | 1996-10-01 | 1996-10-01 | Ship bottom structure for reducing water frictional resistance of ship |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10100985A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006514896A (en) * | 2002-05-07 | 2006-05-18 | ディーケー・グループ・エヌ．エー． エヌ．ブイ． | Air cavity ship having wedge-shaped cavities, longitudinally displaced cavities, and rotation control means, and a method of building the air cavity ship |
| CN101891006A (en) * | 2010-06-29 | 2010-11-24 | 中国船舶重工集团公司第七〇二研究所 | High-speed rounded bilge type boat utilizing air cavity to reduce resistance |
| DE102010036842A1 (en) | 2009-10-20 | 2011-04-21 | Koike Shipbuilding & Shipping Co., Ltd., Toyota-shi | Ballast-free ship |
| JP2012126163A (en) * | 2010-12-13 | 2012-07-05 | Fujita Yasohito | Hull |
| CN103144737A (en) * | 2012-05-29 | 2013-06-12 | 林思桐 | Air resistance-reduced ship with front propelling plant and skeg course control system |
| CN103158834A (en) * | 2013-04-03 | 2013-06-19 | 黄安静 | Air effect water lever ship |
| CN103221300A (en) * | 2010-09-15 | 2013-07-24 | 俄罗斯工业贸易部 | Water displacement boat with air cavities on the bottom |
| WO2013147478A1 (en) * | 2012-03-28 | 2013-10-03 | 강선문 | Ship having frictional resistance reducing device by air cavity in bottom of ship |
| KR101471229B1 (en) * | 2010-11-29 | 2014-12-09 | 현대중공업 주식회사 | Air-cavity with protective structure against cavitation |
| KR101484802B1 (en) * | 2010-12-24 | 2015-01-20 | 현대중공업 주식회사 | Apparatus for preventing air loss of air cavity vessel |
| JP2019524559A (en) * | 2016-08-30 | 2019-09-05 | シルバーストリーム・テクノロジーズ・ビー．ブイ． | Air lubrication system with wave deflector for ships |
| CN112339917A (en) * | 2020-11-12 | 2021-02-09 | 威海卡尔维森船艇有限公司 | Multi-cavity air cushion boat |
-
1996
- 1996-10-01 JP JP8306930A patent/JPH10100985A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101117038B1 (en) * | 2002-05-07 | 2012-03-15 | 디케이 그룹 엔.에이. 엔.브이. | Air cavity vessel with wedge-shaped cavities, longitudinally offset cavities, and roll control means and method for constructing the same |
| JP2006514896A (en) * | 2002-05-07 | 2006-05-18 | ディーケー・グループ・エヌ．エー． エヌ．ブイ． | Air cavity ship having wedge-shaped cavities, longitudinally displaced cavities, and rotation control means, and a method of building the air cavity ship |
| DE102010036842A1 (en) | 2009-10-20 | 2011-04-21 | Koike Shipbuilding & Shipping Co., Ltd., Toyota-shi | Ballast-free ship |
| CN101891006A (en) * | 2010-06-29 | 2010-11-24 | 中国船舶重工集团公司第七〇二研究所 | High-speed rounded bilge type boat utilizing air cavity to reduce resistance |
| CN103221300A (en) * | 2010-09-15 | 2013-07-24 | 俄罗斯工业贸易部 | Water displacement boat with air cavities on the bottom |
| KR101471229B1 (en) * | 2010-11-29 | 2014-12-09 | 현대중공업 주식회사 | Air-cavity with protective structure against cavitation |
| JP2012126163A (en) * | 2010-12-13 | 2012-07-05 | Fujita Yasohito | Hull |
| KR101484802B1 (en) * | 2010-12-24 | 2015-01-20 | 현대중공업 주식회사 | Apparatus for preventing air loss of air cavity vessel |
| WO2013147478A1 (en) * | 2012-03-28 | 2013-10-03 | 강선문 | Ship having frictional resistance reducing device by air cavity in bottom of ship |
| CN103144737A (en) * | 2012-05-29 | 2013-06-12 | 林思桐 | Air resistance-reduced ship with front propelling plant and skeg course control system |
| CN103158834A (en) * | 2013-04-03 | 2013-06-19 | 黄安静 | Air effect water lever ship |
| JP2019524559A (en) * | 2016-08-30 | 2019-09-05 | シルバーストリーム・テクノロジーズ・ビー．ブイ． | Air lubrication system with wave deflector for ships |
| CN112339917A (en) * | 2020-11-12 | 2021-02-09 | 威海卡尔维森船艇有限公司 | Multi-cavity air cushion boat |
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