JPH0948389A - Gas generating device for reducing hull frictional resistance - Google Patents
Gas generating device for reducing hull frictional resistanceInfo
- Publication number
- JPH0948389A JPH0948389A JP7200812A JP20081295A JPH0948389A JP H0948389 A JPH0948389 A JP H0948389A JP 7200812 A JP7200812 A JP 7200812A JP 20081295 A JP20081295 A JP 20081295A JP H0948389 A JPH0948389 A JP H0948389A
- Authority
- JP
- Japan
- Prior art keywords
- hull
- frictional resistance
- generated
- bubbles
- gas
- 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]
【発明の属する技術分野】本発明は船の摩擦抵抗低減を
目的とした塗膜電極利用による気体発生装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas generator using a coating electrode for the purpose of reducing the frictional resistance of a ship.
【０００２】[0002]
【従来の技術】従来の船の摩擦抵抗低減を目的とした気
体供給装置は、圧縮空気を船内で作り、多孔板をくぐら
せ、泡を形成させ、船の外板に穴を設け、ここから泡を
吹き出るようにしている。従って、船体外板に穴が必要
であり、強度上の考慮が必要となっている。2. Description of the Related Art A conventional gas supply device for reducing the frictional resistance of a ship creates compressed air inside the ship, passes through a perforated plate, forms bubbles, and forms holes in the outer plate of the ship. I try to blow out bubbles. Therefore, a hole is required in the hull skin, and consideration is required for strength.
【０００３】[0003]
【発明が解決しようとする課題】前述のように従来の空
気供給装置を使用して、空気を発生させる為には何らか
の形で船体外板に穴を開ける必要がある。それにより、
船体の構造強度が弱められてしまう。さらに、既に建造
した船に装着をする場合、構造上の制約から、取付位置
がきまってしまう。既存船に装着する場合のみならず、
新造船でも高速船のやせた船首部船体には装着できな
い。As described above, in order to generate air using the conventional air supply device, it is necessary to make a hole in the hull skin in some way. Thereby,
The structural strength of the hull is weakened. Furthermore, when mounting on a ship that has already been built, the mounting position is fixed due to structural restrictions. Not only when installing on an existing ship,
Even new ships cannot be mounted on the thin bow hull of high-speed ships.
【０００４】本発明は、船の摩擦抵抗を低減させるため
に圧縮空気を使用せず、そのために外板に穴を設けるこ
となく船体のどの位置にでもさらに新造船、既存船にか
かわらず、装着することができる気体発生装置を実現す
ることを目的とする。The present invention does not use compressed air to reduce the frictional resistance of the ship, and therefore it can be installed at any position on the hull without making holes in the outer plate, whether it is a new ship or an existing ship. It is an object of the present invention to realize a gas generating device that can perform
【０００５】[0005]
【課題を解決するための手段】そのため、本発明は船体
の船首部海水線下の外板表面に所定の距離を隔ててそれ
ぞれ形成した陽極側電導性塗膜面及び陰極側電導性塗膜
面と、同両塗膜面に通電する電源装置とを設けてなり、
海水を電気分解して気泡を発生させることを特徴とする
船体摩擦抵抗低減用気体発生装置を提供する。SUMMARY OF THE INVENTION Therefore, according to the present invention, the anode side conductive coating surface and the cathode side conductive coating surface are formed on the outer plate surface under the sea line of the bow of the hull at a predetermined distance. And a power supply device that energizes both coating surfaces,
Provided is a gas generator for reducing the frictional resistance of a ship, which is characterized by electrolyzing seawater to generate bubbles.
【０００６】本発明は前述の構成により、電源装置より
陽極側、陰極側電導性塗膜面間に電圧を印加すると、海
水は通電性があるので両塗膜間に海水を通して電流が流
れ、水の電気分解が起り、陽極側電導性塗膜面には酸素
が、陰極側電導性塗膜面には水素がそれぞれ発生する。
この発生した酸素、水素が気泡となって両塗膜面より離
れ、これら両塗膜面は船首部に設けられているので、船
体進行方向とは逆方向に船体に沿い流れ、次々と生成さ
れる気泡は同様に船体を包むようにして船首側へ流れて
ゆく。この泡により船体の摩擦抵抗は減少することにな
る。According to the present invention, when a voltage is applied between the surfaces of the conductive coating films on the anode side and the cathode side of the power supply device, the seawater is electrically conductive, so that an electric current flows through the seawater between the coating films to prevent the water from flowing. Occurs, oxygen is generated on the surface of the conductive coating film on the anode side, and hydrogen is generated on the surface of the conductive coating film on the cathode side.
The generated oxygen and hydrogen become bubbles and separate from both coating surfaces.Since these coating surfaces are provided on the bow, they flow along the hull in the direction opposite to the hull traveling direction and are generated one after another. Similarly, air bubbles wrap around the hull and flow toward the bow side. This foam reduces the frictional resistance of the hull.
【０００７】このように気体発生用の空気は圧縮空気、
等を用いずに船体外板浸水部に設置された電導性塗膜面
の電極を利用して海水を電気分解して発生させる為、船
体外板に穴をあける必要はない。さらに、船体の取付場
所は構造から制限を受けない為、どの場所にでも設置で
きる。As described above, the air for generating gas is compressed air,
It is not necessary to make a hole in the hull skin because the seawater is electrolyzed and generated using the electrodes on the electrically conductive coating film surface installed in the flooded part of the hull skin without using the above. In addition, the hull can be installed at any place because it is not restricted by its structure.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面に基づいて具体的に説明する。図１は本発明の実
施の第１形態に係る船体摩擦抵抗低減用気体発生装置の
側面図、図２はその船体横断面図である。両図におい
て、１は船体外板４の表面の電導性の陽極塗膜面、２は
同じく電導性の陰極塗膜面であり、船体外板４に絶縁す
る部分８により離して形成されている。３は、両塗膜面
１，２間に通電するための電源装置、６は海水で５がそ
の喫水を示す。７は陽極塗膜面１、陰極塗膜面２から発
生し、船体進行方向と逆に外板４に沿って流れる泡であ
る。本発明の実施の第１形態においては、図２に示すよ
うに陽極塗膜面１、陰極塗膜面２は船体の船首部分の外
板４のうち喫水５より下で海水６と接する部分に設けら
れる。Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a side view of a hull frictional resistance reducing gas generator according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the hull. In both figures, 1 is an electrically conductive anode coating surface on the surface of the hull skin 4, and 2 is a similarly electrically conductive cathode coating surface, which is formed apart from the hull skin 4 by an insulating portion 8. . 3 is a power supply device for supplying electricity between the coating film surfaces 1 and 2, 6 is seawater, and 5 is its draft. Bubbles 7 are generated from the anode coating surface 1 and the cathode coating surface 2 and flow along the outer plate 4 in the direction opposite to the traveling direction of the hull. In the first embodiment of the present invention, as shown in FIG. 2, the anode coating surface 1 and the cathode coating surface 2 are located below the draft 5 and in contact with the seawater 6 in the outer plate 4 of the bow portion of the hull. It is provided.
【０００９】このような構成の気体発生装置において、
陽極塗膜面１と陰極塗膜面２との間に電源装置３により
電圧を印加し、通電すると陽極塗膜面１からは酸素が、
陰極塗膜面２からは水素が発生する。この発生した酸
素、水素が両塗膜面より離れて泡７となり、船体外板４
に沿って、船の進行方向とは逆の方向に流れ、摩擦抵抗
を低減する。In the gas generator having such a structure,
When a voltage is applied by the power supply device 3 between the anode coating surface 1 and the cathode coating surface 2 and electricity is applied, oxygen is emitted from the anode coating surface 1.
Hydrogen is generated from the cathode coating surface 2. The generated oxygen and hydrogen are separated from both coating surfaces to form bubbles 7, and the hull skin 4
Along the direction opposite to the traveling direction of the ship, reducing frictional resistance.
【００１０】気体、即ち、泡７の発生の化学反応は次の
ようになり、前述のように陽極側にＯ2 （ｇａｓ）が発
生し、陰極側にＨ2 （ｇａｓ）が発生する。The chemical reaction for the generation of gas, that is, the bubble 7, is as follows. As described above, O 2 (gas) is generated on the anode side and H 2 (gas) is generated on the cathode side.
【００１１】Ｈ2 Ｏ（水）→Ｈ2 （ガス）＋１／２Ｏ2
（ガス）；の化学反応式となる。H 2 O (water) → H 2 (gas) + 1 / 2O 2
(Gas);
【００１２】気体生成方法は前述のように、導電性を有
する面塗膜面１，２に電源装置３により電圧をかけ、電
流を流すと、海水６は通電性があるので、海水を通して
電流が流れる。電流が流れると同時に水の電気分解が起
こり、陽極塗膜面１に酸素が、陰極塗膜面２に水素が発
生する。As described above, in the gas generation method, when a voltage is applied by the power supply device 3 to the conductive coating surfaces 1 and 2 and a current is supplied, the seawater 6 has conductivity, so that the current flows through the seawater. Flowing. At the same time when the electric current flows, electrolysis of water occurs, and oxygen is generated on the anode coating surface 1 and hydrogen is generated on the cathode coating surface 2.
【００１３】このように発生した気体の挙動について説
明すると、水の電気分解により導電性の両塗膜面１，２
の表面に気泡７が生成されると、この生成された気泡は
水流の勢いに流され、導電の両塗膜面１，２の表面を離
れ、船体進行方向逆側（船体に添いながら船首側より船
尾側）に流れる。次々に生成された泡７は船体を包む様
にしながら、船体進行方向逆側に流されていく。The behavior of the gas thus generated will be described. Both electroconductive film surfaces 1 and 2 formed by electrolysis of water.
When bubbles 7 are generated on the surface of the, the generated bubbles are made to flow by the force of the water flow, leave the surfaces of the conductive coating surfaces 1 and 2, and are on the opposite side in the traveling direction of the hull (the bow side along the hull From the stern side). The bubbles 7 generated one after another are flowed to the opposite side in the traveling direction of the ship while wrapping the ship.
【００１４】実際に必要な動力は、一般に商業用電解槽
を用いて水を電気分解するのに必要な電力がおよそ４〜
５ｋｗｈ／ｍ3 （Ｈ2 ）であるのでこの程度の電力が必
要である。The actual power required is generally about 4 to about the power required to electrolyze water using a commercial electrolytic cell.
Since it is 5 kwh / m 3 (H 2 ), this level of power is required.
【００１５】なお、電極塗膜面の配置については、船の
前進により泡は後方に流れるので、電極塗膜面は船首側
へ設けた方が効果的である。With respect to the arrangement of the electrode coating film surface, it is more effective to provide the electrode coating film surface on the bow side because bubbles move backward when the ship advances.
【００１６】又、泡の発生率は酸素１：水素２の割合い
になるので、上記の実施の第１形態における電源塗膜面
の配置は図１に示すように前方を陰極、後方を陽極とし
ている。Further, since the generation rate of bubbles is in the ratio of oxygen 1: hydrogen 2, the arrangement of the power supply coating surface in the above-described first embodiment is as shown in FIG. I am trying.
【００１７】図３は本発明の実施の第２形態に係る船体
摩擦抵抗低減用気体発生装置の横断面図である。図にお
いて、船体４の両側面の喫水５より下には電導性の陽極
塗膜面１１が形成され、絶縁する区分け部分１８により
離して船体４の両低面には全面に陰極塗膜面１２が形成
されており、図示省略の電源装置より両塗膜面１１，１
２にそれぞれ通電し、実施の第１形態と同様の作用で泡
７を発生させるものである。このような配置の電極塗膜
面１１，１２は実施の第１形態と同様に船首部分に設け
ると効果的である。FIG. 3 is a cross sectional view of a gas generator for reducing the frictional resistance of a ship according to a second embodiment of the present invention. In the figure, an electrically conductive anode coating surface 11 is formed below the draft 5 on both sides of the hull 4, and is separated by insulating partitioning portions 18 on both lower surfaces of the hull 4 to cover the entire cathode coating surface 12. Is formed on both coating surfaces 11 and 1 from a power supply device (not shown).
2 is energized to generate bubbles 7 by the same action as in the first embodiment. It is effective to provide the electrode coating surfaces 11 and 12 having such an arrangement on the bow portion as in the first embodiment.
【００１８】以上、説明の実施の第１，第２形態によれ
ば、外部から空気を提供するのではなく、海水６に接す
る様に設置された電極塗膜面１，２又は１１，１２を利
用して、海水６より気体の泡７を電気分解により発生さ
せる。この電極塗膜面は塗膜方式にて施工することがで
きる。これにより船体４に穴を開ける必要性をなくし、
構造的な制御を受けないので船体４のどの場所でも配置
出来るものであり、特に比較的小型又は中型の排水量型
高速艇やＳＥＳ型高速艇に適用すれば効果的である。According to the first and second embodiments described above, the electrode coating surface 1, 2 or 11, 12 installed so as to come into contact with the seawater 6 instead of providing air from the outside is used. Utilizing this, bubbles 7 of gas are generated from seawater 6 by electrolysis. This electrode coating surface can be applied by a coating method. This eliminates the need to drill holes in the hull 4,
Since it is not structurally controlled, it can be placed anywhere on the hull 4, and is particularly effective when applied to a relatively small or medium-sized drainage type high-speed boat or SES type high-speed boat.
【００１９】[0019]
【発明の効果】以上、具体的に説明したように、本発明
の船体摩擦抵抗低減用気体発生装置は、船体の船首部海
水線下の外板表面に所定の距離を隔ててそれぞれ形成し
た陽極側電導性塗膜面及び陰極側電導性塗膜面と、同両
塗膜面に通電する電源装置とを設けてなり、海水を電気
分解して気泡を発生させることを特徴としているので、
次のような効果を奏する。As described above in detail, the gas generator for reducing hull frictional resistance according to the present invention is an anode formed on the surface of the outer shell of the hull below the bow seawater line at a predetermined distance. Side conductive coating film surface and cathode side conductive coating film surface, and a power supply device for energizing both coating film surfaces are provided, since it is characterized by electrolyzing seawater to generate bubbles,
The following effects are obtained.
【００２０】（１）海水を電気分解して得られた気体を
使用する為、従来のように空気を船体外板から吐出させ
る為に船体外板に穴を開ける必要はない。(1) Since the gas obtained by electrolyzing seawater is used, it is not necessary to make a hole in the hull outer plate in order to discharge air from the hull outer plate as in the conventional case.
【００２１】（２）電極が塗膜である為、施工場所に制
限はなく、高速船のやせた船首船体にも施工できる。さ
らに、既存船に施工することもできる。(2) Since the electrode is a coating film, there is no limitation on the working place, and the work can be applied to the thin bow hull of a high-speed ship. Further, it can be installed on an existing ship.
【図１】本発明の実施の第１形態に係る船体摩擦抵抗低
減用気体発生装置の側面図である。FIG. 1 is a side view of a hull frictional resistance reducing gas generator according to a first embodiment of the present invention.
【図２】図１における電極塗膜面を形成した船体の断面
図である。FIG. 2 is a cross-sectional view of a hull having an electrode coating surface formed in FIG.
【図３】本発明の実施の第２形態に係る船体摩擦抵抗低
減用気体発生装置の横断面図である。FIG. 3 is a cross-sectional view of a gas generator for reducing hull frictional resistance according to a second embodiment of the present invention.
１，１１ 陽極塗膜面 ２，１２ 陰極塗膜面 ３ 電源装置 ４ 船体外板 ５ 喫水 ６ 海水 ７ 泡 1,11 Anode coating surface 2,12 Cathode coating surface 3 Power supply device 4 Hull outer plate 5 Draft 6 Seawater 7 Foam
Claims (1)
の距離を隔ててそれぞれ形成した陽極側電導性塗膜面及
び陰極側電導性塗膜面と、同両塗膜面に通電する電源装
置とを設けてなり、海水を電気分解して気泡を発生させ
ることを特徴とする船体摩擦抵抗低減用気体発生装置。1. An anode-side conductive coating surface and a cathode-side conductive coating surface, which are respectively formed on a surface of a shell below the seawater line of the hull at a predetermined distance, and current is applied to both coating surfaces. A gas generator for reducing the frictional resistance of a ship, which is provided with a power supply device for generating a bubble by electrolyzing seawater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7200812A JPH0948389A (en) | 1995-08-07 | 1995-08-07 | Gas generating device for reducing hull frictional resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7200812A JPH0948389A (en) | 1995-08-07 | 1995-08-07 | Gas generating device for reducing hull frictional resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0948389A true JPH0948389A (en) | 1997-02-18 |
Family
ID=16430613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7200812A Pending JPH0948389A (en) | 1995-08-07 | 1995-08-07 | Gas generating device for reducing hull frictional resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0948389A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016193642A (en) * | 2015-03-31 | 2016-11-17 | 三菱重工業株式会社 | Friction resistance reduction device of air lubrication type ship, and ship |
| JP2017096402A (en) * | 2015-11-24 | 2017-06-01 | 国立研究開発法人 海上・港湾・航空技術研究所 | Frictional resistance reducing method, structure with reduced frictional resistance and method for forming electrodes for reducing frictional resistance |
-
1995
- 1995-08-07 JP JP7200812A patent/JPH0948389A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016193642A (en) * | 2015-03-31 | 2016-11-17 | 三菱重工業株式会社 | Friction resistance reduction device of air lubrication type ship, and ship |
| JP2017096402A (en) * | 2015-11-24 | 2017-06-01 | 国立研究開発法人 海上・港湾・航空技術研究所 | Frictional resistance reducing method, structure with reduced frictional resistance and method for forming electrodes for reducing frictional resistance |
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|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20030325 |