JPH0769273A - Water surface buoy - Google Patents
Water surface buoyInfo
- Publication number
- JPH0769273A JPH0769273A JP21991993A JP21991993A JPH0769273A JP H0769273 A JPH0769273 A JP H0769273A JP 21991993 A JP21991993 A JP 21991993A JP 21991993 A JP21991993 A JP 21991993A JP H0769273 A JPH0769273 A JP H0769273A
- Authority
- JP
- Japan
- Prior art keywords
- buoy
- water surface
- hydrofoil
- force
- tidal current
- 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
Landscapes
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、海洋観測等に利用する
水面ブイ、特に、潮流の速い場所で優れた効果を発揮す
る水面ブイに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water surface buoy used for ocean observation and the like, and more particularly to a water surface buoy which exhibits an excellent effect in a place where a tidal current is fast.
【０００２】[0002]
【従来の技術】図５に、従来考えられている海洋観測シ
ステムの一例を示す。このシステムは、水中に常設する
観測機器３を第１係留索２を介して海底のアンカー１に
連結し、さらに、観測機器３の上部に第１係留索２をで
きるだけ垂直に保って観測点のずれを少なくする水中ブ
イ４を設け、この水中ブイ４と水面ブイ６との間を、デ
ータ送信用の光ファイバや電線を含む第２係留索５で連
結して観測機器３から収集したデータを水面ブイ６中の
機器に送るようにしている。2. Description of the Related Art FIG. 5 shows an example of a conventional ocean observation system. This system connects the observation equipment 3 permanently installed in the water to the anchor 1 on the seabed via the first mooring rope 2, and further keeps the first mooring rope 2 above the observation equipment 3 as vertically as possible. The underwater buoy 4 for reducing the deviation is provided, and the underwater buoy 4 and the water surface buoy 6 are connected by the second mooring cable 5 including an optical fiber and an electric wire for data transmission, and the data collected from the observation device 3 is collected. The water buoy 6 is sent to the equipment.
【０００３】水面ブイ６に伝送されたデータは、無線
で陸上局に送る。水面ブイ６中の機器に蓄積してお
き、定期的に水面ブイを船に揚収して収集する。のいず
れかの方法で集めて分析される。The data transmitted to the water surface buoy 6 is sent to the land station by radio. The water buoy 6 is accumulated in the equipment, and the water buoy is periodically collected and collected on a ship. It is collected and analyzed by either method.
【０００４】[0004]
【発明が解決しようとする課題】上述した観測システム
では、潮流が速いと水面ブイ６に大きな流体力が働いて
係留索２、５に大きな張力が加わる。In the above-mentioned observation system, when the tidal current is fast, a large fluid force acts on the water surface buoy 6 and a large tension is applied to the mooring lines 2 and 5.
【０００５】また、大きな流体力が加わると、アンカー
で留めた水面ブイ６が水中に埋没してしまい、無線通信
や船への揚収が不可能になる。Further, if a large fluid force is applied, the water buoy 6 anchored will be buried in the water, making it impossible to carry out radio communication or to pick up on a ship.
【０００６】そこで、実公平５−１１１１７号公報は、
水面ブイを浮力の大きな第１ブイと観測機器からデータ
を受ける第２ブイの２者で構成し、第１ブイを水中ブイ
に接続し、この第１ブイに第３の係留索で第２ブイをつ
ないで第２ブイの水没を無くす技術を提案しているが、
この構造によると、アンカーと第１ブイ間の係留索に加
わる張力がより大きくなる。Therefore, Japanese Utility Model Publication No. 5-11117 discloses
The water buoy is composed of the first buoy with large buoyancy and the second buoy that receives data from the observation equipment. The first buoy is connected to the underwater buoy and the second buoy is connected to the first buoy with the third mooring line. I am proposing a technology to connect the 2nd buoy to prevent submersion in water,
According to this structure, the tension applied to the mooring line between the anchor and the first buoy becomes larger.
【０００７】このため、従来のこの種観測システムで
は、潮流に耐える太さの係留索を選定することになる
が、観測点が水深１０００ｍにも及ぶような大深度水域
で使用する係留索は、太さが少し違うだけでも全体の重
量増、体積増が無視できないものになる。Therefore, in this type of conventional observation system, a mooring line having a thickness that can withstand tidal current is selected. However, the mooring line used in a deep water area where the observation point reaches a water depth of 1000 m is Even if the thickness is slightly different, the overall weight increase and volume increase cannot be ignored.
【０００８】海洋観測は多点で行われることが多く、従
来の観測システムでは、大深度観測点の全てに大重量、
大体積の係留索を設置することになるため、運搬、取扱
い、設置の手間が増える。Ocean observation is often carried out at many points. In the conventional observation system, all of the deep depth observation points have a large weight,
Since a large volume of mooring lines will be installed, the effort of transportation, handling and installation will increase.
【０００９】また、係留索が重くなれば、その分、水面
ブイの浮力を増加させなければならないので、水面ブイ
の大型化も避けられない。Further, if the mooring line becomes heavier, the buoyancy of the water surface buoy must be increased accordingly, so that the water surface buoy must be increased in size.
【００１０】そこで、本発明は、係留索の引留め負担が
軽減される水面ブイを提供しようとするものである。Therefore, the present invention is intended to provide a water surface buoy in which the burden of retaining mooring lines is reduced.
【００１１】[0011]
【課題を解決するための手段】本発明の水面ブイは、上
記の課題を解決するため、前縁が潮流と対向する水中翼
を具備させたのである。In order to solve the above-mentioned problems, the water surface buoy of the present invention is provided with hydrofoils whose leading edge faces the tidal current.
【００１２】なお、この水面ブイは、水中翼を確実に潮
流に対向させるために流れに対して方向性をもつ形状に
するか又は方向舵を具備する形状にするのが望ましい。It is desirable that the water surface buoy has a shape having directivity with respect to the flow or a shape having a rudder in order to ensure that the hydrofoil faces the tidal current.
【００１３】[0013]
【作用】本発明の水面ブイは、波を受けて上下動すると
前進力を生じて潮流による押し流し力を減衰させる。When the water buoy of the present invention receives a wave and moves up and down, it produces a forward force to damp the swept-off force due to the tidal current.
【００１４】図４は、前進力発生理論の解説図である。
今、翼８に対して潮流が速度Ｖで流れており、波によっ
て翼８が速度Ｕで上下動するとしたら、翼に作用する流
体力はＷで表され、それによって翼８には揚力Ｌと抗力
Ｄが発生し、その合力Ｆの水平方向分力としてＴの前進
力が得られる。FIG. 4 is an explanatory view of the forward force generation theory.
Now, if the tidal current is flowing at a velocity V with respect to the blade 8 and the blade 8 moves up and down at a velocity U due to a wave, the fluid force acting on the blade is represented by W, which causes a lift L to the blade 8. A reaction force D is generated, and a forward force of T is obtained as a horizontal component force of the resultant force F.
【００１５】従って、水面ブイが押し流される力はＴの
前進力が生じた分従来の水面ブイよりも小さくなり、こ
れによって係留索に加わる張力が低減し、ブイを水没さ
せようとする力も小さくなる。Therefore, the force by which the water surface buoy is swept is smaller than that of the conventional water surface buoy by the amount of the forward force of T, so that the tension applied to the mooring line is reduced and the force for submerging the buoy is also decreased. .
【００１６】[0016]
【実施例】図１に、本発明の水面ブイの一例を示す。図
に示すように、この水面ブイ６は、本体７の下部に水中
翼８を取付けて構成されている。EXAMPLE FIG. 1 shows an example of a water surface buoy according to the present invention. As shown in the figure, the water surface buoy 6 is constructed by attaching a hydrofoil 8 to a lower portion of a main body 7.
【００１７】本体７は、ここでは平面視形状を涙滴型と
して潮流に対して方向性をもたせている。従って、この
本体７に取付けた水中翼８は、前縁が確実に潮流と対向
することになる。Here, the main body 7 has a teardrop shape in a plan view so as to have directivity with respect to the tidal current. Therefore, the hydrofoil 8 attached to the main body 7 has its leading edge reliably facing the tidal current.
【００１８】水中翼８は、任意の断面形状を採用し得る
が、図のように、前縁から３０〜４０％の位置に最大厚
みを持つ層流断面を有する翼が推進力増強面で好まし
い。The hydrofoil 8 may have any cross-sectional shape, but as shown in the figure, a vane having a laminar flow cross section having a maximum thickness at a position of 30 to 40% from the leading edge is preferable in terms of propulsive force enhancement. .
【００１９】この水中翼８を取付ける位置は、本体７の
下部に限定されない。例えば、図２に示すように、本体
７の後部でもよいし、本体７の側部でもよい。The position where the hydrofoil 8 is attached is not limited to the lower portion of the main body 7. For example, as shown in FIG. 2, it may be a rear portion of the main body 7 or a side portion of the main body 7.
【００２０】また、図２のように方向舵９を設ければ、
本体７を球形、円筒形等の一般的な形状にして水中翼８
を潮流に対向させることができる。If a rudder 9 is provided as shown in FIG. 2,
Hydrofoil 8 with main body 7 made into a general shape such as spherical or cylindrical
Can face the current.
【００２１】図３は、使用する水中翼８のより好ましい
例を示している。FIG. 3 shows a more preferable example of the hydrofoil 8 used.
【００２２】翼に働く図４の揚力Ｌは、翼が受けるＷの
力の角度（迎え角）αと密接な関係がある。一般に、こ
の迎え角αが１２°付近までは揚力Ｌが直線的に増加
し、その後、急激に低下する。これに対し、水中翼８の
上下動は波によるもので自然条件に依存するため、水中
翼８の向きが一定なら迎え角αも変動し、得られる前進
力が安定しない。The lift force L of FIG. 4 acting on the blade is closely related to the angle (attack angle) α of the force W received by the blade. Generally, the lift force L increases linearly until the angle of attack α is around 12 °, and then sharply decreases. On the other hand, since the vertical movement of the hydrofoil 8 is due to waves and depends on natural conditions, if the direction of the hydrofoil 8 is constant, the angle of attack α also fluctuates, and the obtained forward force is not stable.
【００２３】そこで、図３は水中翼８をヒンジ軸１０を
介してブイの本体に取付け、ストッパピン１１と長孔１
２に規制される範囲で翼８が波により自然に振れるよう
にしている。この構造は、迎え角αが自動調整されるの
で、前進力の増強に有効である。Therefore, in FIG. 3, the hydrofoil 8 is attached to the main body of the buoy via the hinge shaft 10, and the stopper pin 11 and the long hole 1 are attached.
The wing 8 is naturally swung by the wave within the range regulated by 2. This structure is effective in enhancing the forward force because the angle of attack α is automatically adjusted.
【００２４】なお、迎え角αは、波の高さ、上下動の速
度に合わせて水中翼の向きを最適角度に制御する動力駆
動の制御機構を設けて補正するようにしてもよい。The angle of attack α may be corrected by providing a power-driven control mechanism for controlling the direction of the hydrofoil to an optimum angle according to the height of the wave and the speed of vertical movement.
【００２５】また、水中翼８は、中性浮力とすると、波
による上下動が滑らかになり、前進力の増強面でより好
ましくなる。If the hydrofoil 8 has neutral buoyancy, the vertical movement due to waves becomes smooth, which is more preferable in terms of enhancing the forward force.
【００２６】[0026]
【発明の効果】以上述べたように、本発明の水面ブイ
は、水中翼の働きによって潮流に抗する前進力を発生す
るので、係留索に加わる張力が小さくなり、係留索の重
量減、体積減を図ってその運搬、取扱い、設置を簡易化
することができる。As described above, the water surface buoy of the present invention generates a forward force against the tidal current due to the action of the hydrofoil, so that the tension applied to the mooring line is reduced, and the weight and volume of the mooring line are reduced. It can be reduced and the transportation, handling, and installation can be simplified.
【００２７】また、水中への埋没を防止するのに必要な
浮力が小さくて済むので、ブイの小型化も図れる。Further, since the buoyancy required to prevent the buoyancy in water is small, the buoy can be downsized.
【図面の簡単な説明】[Brief description of drawings]
【図１】（ａ）：本発明の水面ブイの一例を示す側面図 （ｂ）：同上の平面図1A is a side view showing an example of a water surface buoy of the present invention, and FIG. 1B is a plan view of the same.
【図２】（ａ）：他の実施例の側面図 （ｂ）：同上の平面図FIG. 2A is a side view of another embodiment. FIG. 2B is a plan view of the above.
【図３】可変水中翼の一例を示す側面図FIG. 3 is a side view showing an example of a variable hydrofoil.
【図４】前進力発生原理の解説図[Figure 4] Explanatory diagram of the principle of forward force generation
【図５】水面ブイを使用した海洋観測システムの一例を
示す図FIG. 5 is a diagram showing an example of an ocean observation system using a water buoy.
５ 第２係留索 ６ 水面ブイ ７ 本体 ８ 水中翼 ９ 方向舵 １０ ヒンジ軸 １１ ストッパピン １２ 長孔 5 Second mooring line 6 Water surface buoy 7 Main body 8 Hydrofoil 9 Rudder 10 Hinge shaft 11 Stopper pin 12 Long hole
Claims (1)
た水面ブイ。1. A water buoy having a hydrofoil whose leading edge faces the tidal current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21991993A JPH0769273A (en) | 1993-09-03 | 1993-09-03 | Water surface buoy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21991993A JPH0769273A (en) | 1993-09-03 | 1993-09-03 | Water surface buoy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0769273A true JPH0769273A (en) | 1995-03-14 |
Family
ID=16743081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21991993A Pending JPH0769273A (en) | 1993-09-03 | 1993-09-03 | Water surface buoy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0769273A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016040145A (en) * | 2014-08-12 | 2016-03-24 | 公立大学法人大阪府立大学 | Spar buoy equipped with posture stabilizer |
| ES2645314A1 (en) * | 2016-06-03 | 2017-12-04 | Universidad De Cádiz | Oceanographic buoy with low vertical/horizontal displacement and reduction of inclination angle of the anchor lines (Machine-translation by Google Translate, not legally binding) |
| JP2020082776A (en) * | 2018-11-16 | 2020-06-04 | 日立造船株式会社 | Mooring system |
| KR20230035873A (en) * | 2021-09-06 | 2023-03-14 | 정병규 | Waterborne Floating Assembly |
-
1993
- 1993-09-03 JP JP21991993A patent/JPH0769273A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016040145A (en) * | 2014-08-12 | 2016-03-24 | 公立大学法人大阪府立大学 | Spar buoy equipped with posture stabilizer |
| ES2645314A1 (en) * | 2016-06-03 | 2017-12-04 | Universidad De Cádiz | Oceanographic buoy with low vertical/horizontal displacement and reduction of inclination angle of the anchor lines (Machine-translation by Google Translate, not legally binding) |
| WO2017207834A1 (en) * | 2016-06-03 | 2017-12-07 | Universidad De Cádiz | Oceanographic buoy with low vertical/horizontal travel and reduced angle of inclination of mooring lines |
| JP2020082776A (en) * | 2018-11-16 | 2020-06-04 | 日立造船株式会社 | Mooring system |
| KR20230035873A (en) * | 2021-09-06 | 2023-03-14 | 정병규 | Waterborne Floating Assembly |
| KR20230132416A (en) * | 2021-09-06 | 2023-09-15 | 정병규 | Floating assembly that reduces shaking load in a floating state |
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