JP6646865B2 - Buoyancy adjustment device for underwater floating bodies and ocean current generator - Google Patents
Buoyancy adjustment device for underwater floating bodies and ocean current generator Download PDFInfo
- Publication number
- JP6646865B2 JP6646865B2 JP2015134838A JP2015134838A JP6646865B2 JP 6646865 B2 JP6646865 B2 JP 6646865B2 JP 2015134838 A JP2015134838 A JP 2015134838A JP 2015134838 A JP2015134838 A JP 2015134838A JP 6646865 B2 JP6646865 B2 JP 6646865B2
- Authority
- JP
- Japan
- Prior art keywords
- floating body
- underwater
- underwater floating
- buoyancy
- bodies
- 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.)
- Active
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Description
本発明は、水底に係留索を介して繋がれた水中浮遊体の深度を所定範囲に留めるため、水中浮遊体に加わる浮力を調整する水中浮遊体の浮力調整装置及び海流発電装置に関する。 TECHNICAL FIELD The present invention relates to a buoyancy adjusting device for an underwater floating body that adjusts the buoyancy applied to the underwater floating body in order to keep the depth of the underwater floating body connected to a water floor via a mooring line within a predetermined range, and to a marine power generation device.
近年、海底に係留索を介して繋がれた水中浮遊体にプロペラを取り付け、黒潮等の海流によってプロペラを回転させて発電するようにした水中浮遊式海流発電システムが提案されている（例えば、特許文献１参照）。 BACKGROUND ART In recent years, an underwater floating type ocean current power generation system has been proposed in which a propeller is attached to an underwater floating body connected to a seabed via a mooring line, and the propeller is rotated by an ocean current such as the Kuroshio to generate power. Reference 1).
このような水中浮遊式海流発電システムにおいては、水温の変化や海流の強弱等の外乱要因によって、水中浮遊体の深度が設定深度から外れる事態が考えられる。例えば、海流が強くなった場合、係留索と海底との角度が小さくなって水中浮遊体が沈降し、逆に、海流が弱くなった場合、水中浮遊体が浮上する。また、海流の水温が高くなった場合、海水の比重が小さくなるので水中浮遊体が沈降し、逆に、海流の水温が低くなった場合、水中浮遊体が浮上する。 In such an underwater floating ocean current power generation system, the depth of the underwater floating body may deviate from the set depth due to disturbance factors such as changes in water temperature and the strength of ocean currents. For example, when the current becomes strong, the angle between the mooring line and the sea floor becomes small, and the underwater floating body sinks. Conversely, when the current becomes weak, the underwater floating body floats. In addition, when the temperature of the ocean current increases, the specific gravity of the seawater decreases, and the underwater floating body sinks. On the contrary, when the temperature of the ocean current decreases, the underwater floating body floats.
ここで、水中浮遊体の深度が設定深度よりも深くなり過ぎると、水圧で水中浮遊体の耐圧殻が破損したり、プロペラが海底に接触したり、海流が弱く発電効率が低下する等の不具合が発生する。逆に、水中浮遊体の深度が設定深度よりも浅くなり過ぎると、水中浮遊体やプロペラが漁船の漁網や船舶と干渉する等の不具合が発生する。一般に、水中浮遊体の深度は、例えば、海面下数十〜数百メートルに設定され、水中浮遊体の浮力を調整して、水中浮遊体の深度を一定深度範囲内に保つ必要がある。この浮力調整装置として、潜水艦や深海探査艇等に用いられている装置を転用することが考えられる。 If the depth of the underwater floating body becomes too deeper than the set depth, problems such as damage to the pressure hull of the underwater floating body due to water pressure, contact of the propeller with the sea floor, weak current, and reduced power generation efficiency Occurs. Conversely, if the depth of the underwater floating body becomes too shallower than the set depth, problems such as the underwater floating body and the propeller interfering with the fishing net or the boat of the fishing boat occur. In general, the depth of an underwater floating body is set to, for example, several tens to several hundreds of meters below the sea level, and it is necessary to adjust the buoyancy of the underwater floating body to keep the depth of the underwater floating body within a certain depth range. As this buoyancy adjusting device, it is conceivable to use a device used for a submarine, a deep sea exploration boat, or the like.
例えば、潜水艦や深海探査艇の浮力調整装置として、水よりも比重の軽い油や気体等の作動流体が注入又は排出されることで容積が変化する浮力調整袋を、水中浮遊体の耐圧殻の外側に設け、作動流体を注入又は排出して浮力調整袋の容積を変化させることで水中浮遊体の排水体積を変化させ、アルキメデスの原理により水中浮遊体の浮力を調節するようにしたものが知られている（例えば、特許文献２参照）。 For example, as a buoyancy control device for submarines and deep sea exploration boats, a buoyancy control bag whose volume changes when a working fluid such as oil or gas having a lower specific gravity than water is injected or discharged is used as a buoyancy control shell It is known that the buoyancy of an underwater floating body is adjusted by Archimedes' principle by changing the drainage volume of the underwater floating body by changing the volume of the buoyancy adjusting bag by injecting or discharging the working fluid by changing the volume of the buoyancy adjusting bag. (For example, see Patent Document 2).
しかしながら、浮力調整袋に作動流体を注入又は排出するためには、ポンプ等の圧送機器を水中浮遊体に搭載しなければならず、それを作動させるためのエネルギーも必要となる。したがって、水中浮遊体に設けたプロペラにより発電した電力等の一部を、水中浮遊体の深度調節（浮力調整）のエネルギーに使用せざるを得ず、その分だけ外部への電力供給量が減少してしまうこととなる。 However, in order to inject or discharge the working fluid into or out of the buoyancy adjusting bag, a pumping device such as a pump must be mounted on the underwater suspension, and energy for operating the device is also required. Therefore, a part of the electric power generated by the propeller installed in the underwater floating body must be used for the energy for adjusting the depth (buoyancy adjustment) of the underwater floating body, and the power supply to the outside is reduced by that much Will be done.
本発明は、上述した問題点を鑑みて創案されたものであり、その目的とするところは、外乱要因によって水中浮遊体の深度が変化した場合であっても、エネルギー消費量を低減しつつ、水中浮遊体の浮力を調整することができる、水中浮遊体の浮力調整装置及び海流発電装置を提供することにある。 The present invention has been made in view of the above-described problems, and aims to reduce energy consumption even when the depth of an underwater floating body changes due to a disturbance factor. It is an object of the present invention to provide a buoyancy adjusting device for an underwater floating body and an ocean current power generation device that can adjust the buoyancy of the underwater floating body.
本発明によれば、水底に係留索を介して繋がれた水中浮遊体の浮力調整装置であって、一端が前記水中浮遊体に接続され他端が水面に浮遊可能に構成された索体と、該索体の他端側に前記索体の長手方向に沿って配置された複数の浮体と、を備え、前記複数の浮体のうち、少なくとも一つの浮体が水面に浮遊し、残りの浮体が水中に沈められており、前記水中浮遊体の深度変化に伴って海中に沈められる前記浮体の個数の増減により前記水中浮遊体の浮力を受動的に調整するようにした、ことを特徴とする水中浮遊体の浮力調整装置が提供される。
According to the present invention, there is provided a buoyancy adjusting device for an underwater floating body connected to a water bottom via a mooring line, wherein the one end is connected to the underwater floating body and the other end is configured to be floatable on the water surface. A plurality of floating bodies arranged along the longitudinal direction of the rope body at the other end side of the rope body, at least one of the plurality of floating bodies floats on the water surface, and the remaining floating bodies are Underwater characterized by being submerged in water and passively adjusting the buoyancy of the underwater floating body by increasing or decreasing the number of the floating bodies submerged in the sea with a change in depth of the underwater floating body. An apparatus for adjusting buoyancy of a floating body is provided.
また、本発明によれば、海底に係留索を介して繋がれた水中浮遊体と、該水中浮遊体に配置されたプロペラと、を備え、海流によって前記プロペラを回転させて発電するようにした海流発電装置において、一端が前記水中浮遊体に接続され他端が水面に浮遊可能に構成された索体と、該索体の他端側に前記索体の長手方向に沿って配置された複数の浮体と、を備え、前記複数の浮体のうち、少なくとも一つの浮体が水面に浮遊し、残りの浮体が水中に沈められており、前記水中浮遊体の深度変化に伴って海中に沈められる前記浮体の個数の増減により前記水中浮遊体の浮力を受動的に調整するようにした、ことを特徴とする海流発電装置が提供される。
Further, according to the present invention, an underwater floating body connected to the sea floor via a mooring line, and a propeller disposed on the underwater floating body are provided, and the propeller is rotated by an ocean current to generate power. In the marine power generation device, a cable body having one end connected to the underwater floating body and the other end configured to be floatable on the water surface, and a plurality of rope bodies arranged along the longitudinal direction of the rope body at the other end side of the rope body. Of the plurality of floating bodies, at least one of the floating bodies floats on the water surface, the remaining floating bodies are submerged in the water, and submerged in the sea with a change in the depth of the submerged floating body. A marine current power generator is provided, wherein the buoyancy of the underwater floating body is passively adjusted by increasing or decreasing the number of floating bodies .
上述した浮力調整装置及び海流発電装置において、水面に浮遊した前記少なくとも一つの浮体は、前記水中浮遊体に制御信号を送信する又は前記水中浮遊体が取得したデータを外部に伝送するためのアンテナを備えていてもよい。 In the buoyancy adjusting device and the ocean current power generating device described above, the at least one floating body floating on the surface of the water has an antenna for transmitting a control signal to the underwater floating body or transmitting data obtained by the underwater floating body to the outside. You may have.
また、水面に浮遊した前記少なくとも一つの浮体は、前記水中浮遊体の位置を周囲の船舶に認識させるための目印を備えていてもよい。 Further, the at least one floating body floating on the water surface may include a mark for causing a surrounding ship to recognize the position of the underwater floating body.
また、前記索体は、前記水中浮遊体の端部に配置された筒状のガイドに挿通され水中に繰り出されていてもよい。 Further, the cable body may be inserted into a cylindrical guide disposed at an end of the underwater floating body and may be drawn out into the water.
また、前記索体は、前記水中浮遊体に第一巻取装置を介して接続されていてもよい。 Further, the cable body may be connected to the underwater floating body via a first winding device.
また、前記係留索は、前記水中浮遊体に第二巻取装置を介して接続されていてもよい。 Further, the mooring line may be connected to the underwater floating body via a second winding device.
また、一端が前記水中浮遊体に接続され他端が水底に着床可能に構成された錘用索と、該錘用索の他端側に前記錘用索の長手方向に沿って配置された複数の錘体と、を備え、前記水中浮遊体の深度変化に伴って着底される前記錘体の個数の増減により前記水中浮遊体の浮力を受動的に調整するようにしてもよい。
In addition, one end is connected to the underwater floating body and the other end is configured to be able to land on the water floor, and a weight rope is arranged along the longitudinal direction of the weight rope on the other end side of the weight rope. A plurality of weights may be provided, and the buoyancy of the underwater floating body may be passively adjusted by increasing or decreasing the number of the weights landed in accordance with a change in the depth of the underwater floating body.
本発明に係る水中浮遊体の浮力調整装置及び海流発電装置によれば、水温の変化や海流の強弱等の外乱要因によって、水中浮遊体の深度が深くなった場合、それまで水面に浮かんでいた浮体が水中に引き込まれ、水中に沈められる浮体の個数が増えることから、水中浮遊体に加わる浮力が大きくなり、水中浮遊体に浮上力が働く。逆に、水中浮遊体の深度が浅くなった場合、それまで水中に沈められていた浮体が水面に浮上し、水中に沈められる浮体の個数が減ることから、水中浮遊体に加わる浮力が小さくなり、水中浮遊体に沈降力が働く。 According to the buoyancy control device and the ocean current generator of the underwater suspension according to the present invention, when the depth of the underwater suspension becomes deep due to a disturbance factor such as a change in water temperature or the strength of the ocean current, the underwater suspension has previously floated on the water surface. Since the floating body is drawn into the water and the number of floating bodies submerged increases, the buoyancy applied to the underwater floating body increases, and a floating force acts on the underwater floating body. Conversely, if the depth of the underwater floating body becomes shallow, the floating body that was previously submerged in the water rises to the surface of the water, and the number of floating bodies that are submerged decreases, so the buoyancy applied to the underwater floating body decreases. , Sedimentation force acts on floating bodies in water.
このように、本発明に係る浮力調整装置及び海流発電装置では、水中浮遊体の浮力が、水中浮遊体の深度変化に伴って海中に沈められる浮体の個数の増減によって受動的に調整されることから、従来技術のようなポンプ等の圧送機器を搭載する必要がなく、かつ、それを作動させる必要もない。したがって、外乱要因によって水中浮遊体の深度が変化した場合であっても、エネルギー消費量を低減しつつ、水中浮遊体の浮力を調整することができる。 As described above, in the buoyancy adjusting device and the ocean current power generation device according to the present invention, the buoyancy of the underwater floating body is passively adjusted by increasing or decreasing the number of floating bodies submerged in the sea with a change in the depth of the underwater floating body. Therefore, there is no need to mount a pumping device such as a pump as in the prior art, and it is not necessary to operate it. Therefore, even when the depth of the underwater floating body changes due to a disturbance factor, the buoyancy of the underwater floating body can be adjusted while reducing the energy consumption.
以下に添付図面を参照しながら、本発明の好適な実施形態について詳細に説明する。かかる実施形態に示す寸法、材料、その他具体的な数値等は、発明の理解を容易にするための例示に過ぎず、特に断る場合を除き、本発明を限定するものではない。なお、本明細書及び図面において、実質的に同一の機能、構成を有する要素については、同一の符号を付すことにより重複した説明を省略し、また、本発明に直接関係のない要素は図示を省略する。 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values and the like shown in the embodiments are merely examples for facilitating the understanding of the present invention, and do not limit the present invention unless otherwise specified. In the specification and the drawings, elements having substantially the same function and configuration will be denoted by the same reference numerals, without redundant description, and elements not directly related to the present invention will be illustrated. Omitted.
（第一実施形態）
図１を用いて、本発明の第一実施形態に係る水中浮遊体の浮力調整装置１について説明する。本実施形態に係る水中浮遊体の浮力調整装置１は、海底２（水底）に係留索３を介して繋がれた水中浮遊体４の浮力調整装置１であって、一端が水中浮遊体４に接続され他端が海面５（水面）に浮遊可能に構成された索体６と、索体６の他端側に索体６の長手方向に沿って配置された複数の浮体７と、を備え、複数の浮体７のうち、少なくとも一つの浮体７（例えば、端末浮体７ａ）が海面５（水面）に浮遊し、残りの浮体７が海中（水中）に沈められているものである。
(First embodiment)
A buoyancy adjusting device 1 for an underwater floating body according to a first embodiment of the present invention will be described with reference to FIG. The buoyancy adjusting device 1 for an underwater floating body according to the present embodiment is a buoyancy adjusting device 1 for an underwater floating body 4 connected to a sea floor 2 (water bottom) via a mooring cable 3, and one end of the device is connected to the underwater floating body 4. A cable body 6 is connected and the other end is configured to be able to float on the sea surface 5 (water surface), and a plurality of floating bodies 7 arranged on the other end side of the cable body 6 along the longitudinal direction of the cable body 6. Among the plurality of floating bodies 7, at least one floating body 7 (for example, terminal floating body 7a) floats on the sea surface 5 (water surface), and the remaining floating bodies 7 are submerged in the sea (underwater).
水中浮遊体４は、例えば、海流発電装置に使用される水中浮遊体である。以下の説明では、水中浮遊体４が海底２に係留される場合について説明するが、水中浮遊体４は、海流発電システムに使用されるものに限定されるものではない。例えば、水中浮遊体４は、海底調査・探査等に用いられる水中浮遊体であってもよいし、海底２以外の川底や湖底に係留されるものであってもよい。 The underwater floating body 4 is, for example, an underwater floating body used in an ocean current power generation device. In the following description, a case where the underwater floating body 4 is moored to the seabed 2 will be described, but the underwater floating body 4 is not limited to the one used in the ocean current power generation system. For example, the underwater floating body 4 may be an underwater floating body used for seafloor survey / exploration, or may be moored at a riverbed or lake bottom other than the seabed 2.
水中浮遊体４は、例えば、黒潮等の海流Ｃによって回転駆動されるプロペラ８を有している。プロペラ８の直径は、例えば、３０〜４０メートル程度である。水中浮遊体４の内部には、プロペラ８によって駆動される発電機等が収容されている。発電機によって発電された電力は、例えば、係留索３に沿って設けられたケーブルを介して係留索３を海底２に固定するアンカー９（又はシンカー）に送られ、アンカー９から海底接続箱１０に送られ、海底接続箱１０から海底ケーブル１１を介して所定の施設や設備等に送電される。 The underwater floating body 4 has, for example, a propeller 8 that is rotationally driven by an ocean current C such as the Kuroshio current. The diameter of the propeller 8 is, for example, about 30 to 40 meters. A generator or the like driven by a propeller 8 is accommodated inside the underwater floating body 4. The electric power generated by the generator is sent to an anchor 9 (or a sinker) for fixing the mooring line 3 to the seabed 2 via a cable provided along the mooring line 3, for example. The power is transmitted from the submarine junction box 10 to predetermined facilities and equipment via the submarine cable 11.
すなわち、本実施形態において、海流発電装置は、海底２に係留索３を介して繋がれた水中浮遊体４と、水中浮遊体４に配置されたプロペラ８と、を備え、海流によってプロペラ８を回転させて発電するようにしたものである。 That is, in the present embodiment, the ocean current power generation device includes an underwater floating body 4 connected to the sea floor 2 via the mooring line 3 and a propeller 8 arranged on the underwater floating body 4, and the propeller 8 is moved by the ocean current. It is designed to rotate to generate electricity.
水中浮遊体４の比重は、周囲の海水と略等しく又は海水よりも僅かに大きく調節されている。また、この比重は、例えば、水中浮遊体４が浮体７によって浮力を受け、海流Ｃによってプロペラ８が回転された際に、水中浮遊体４が海底２から浮上した状態となるように設定される。 The specific gravity of the underwater suspension 4 is adjusted to be substantially equal to or slightly larger than the surrounding seawater. The specific gravity is set such that, for example, when the underwater floating body 4 receives buoyancy by the floating body 7 and the propeller 8 is rotated by the ocean current C, the underwater floating body 4 floats from the seabed 2. .
水中浮遊体４には、図示したように、索体６が接続されている。索体６は、一端が水中浮遊体４に接続され、他端が海面５に位置している。索体６の他端側には、索体６の長手方向に所定の間隔を隔てて複数の浮体７が設けられている。ここで、本実施形態において「索体６の他端側」とは、索体６の延伸方向における中央付近よりも海面５に近い側を意味する。図１に示した第一実施形態では、浮体７の個数は９個であり、水中浮遊体４側の５個の浮体７が海中に位置し、海面５側の４個の浮体７が海面５に位置することで、水中浮遊体４の海中でのバランスが保持されている。 The rope 6 is connected to the underwater floating body 4 as illustrated. The cord 6 has one end connected to the underwater floating body 4 and the other end located on the sea surface 5. A plurality of floating bodies 7 are provided at the other end of the rope body 6 at predetermined intervals in the longitudinal direction of the rope body 6. Here, in the present embodiment, “the other end side of the cord 6” means a side closer to the sea surface 5 than near the center in the extending direction of the cord 6. In the first embodiment shown in FIG. 1, the number of floating bodies 7 is nine, five floating bodies 7 on the underwater floating body 4 side are located in the sea, and four floating bodies 7 on the sea surface 5 side are , The underwater balance of the underwater floating body 4 is maintained.
浮体７は、例えば、金属製又は樹脂製の中空球体や発泡樹脂製のブロック等により形成される。浮体７の比重は、海水の比重よりも小さく設定される。浮体７の個数は任意であるが、例えば、５〜１０個程度に設定される。また、浮体７同士の間隔は任意であるが、例えば、５〜１０メートル程度に設定される。かかる浮体７を用いて、水中浮遊体４の深度は、例えば、２５〜１００メートルの範囲で調整される。また、本実施形態において、索体６の最後尾に配設された浮体７を、説明の便宜上、端末浮体７ａと称する。端末浮体７ａは、他の浮体７よりも体積（浮力）が大きく、他の浮体７よりも沈降し難いように構成してもよい。 The floating body 7 is formed of, for example, a hollow sphere made of metal or resin, a block made of foamed resin, or the like. The specific gravity of the floating body 7 is set smaller than the specific gravity of seawater. Although the number of the floating bodies 7 is arbitrary, it is set to, for example, about 5 to 10. The spacing between the floating bodies 7 is arbitrary, but is set to, for example, about 5 to 10 meters. Using the floating body 7, the depth of the underwater floating body 4 is adjusted, for example, in a range of 25 to 100 meters. In the present embodiment, the floating body 7 disposed at the end of the cable body 6 is referred to as a terminal floating body 7a for convenience of description. The terminal floating body 7a may have a larger volume (buoyancy) than the other floating bodies 7, and may be configured to be less likely to sink than the other floating bodies 7.
端末浮体７ａには、水中浮遊体４に制御信号を送信する又は水中浮遊体４が取得したデータを外部に伝送するためのアンテナ１２を配置するようにしてもよい。制御信号としては、水中浮遊体４の設定深度、プロペラ８のピッチ角（プロペラの軸に対するプロペラ取付角度）、異常時非常停止指令等が挙げられる。また、データとしては、発電機の電流電圧値、海水温度、プロペラ８の回転速度やピッチ等が挙げられる。アンテナ１２と水中浮遊体４とは、索体６に沿って敷設されたケーブル（図示せず）によって通信可能に接続されている。 The terminal floating body 7a may be provided with an antenna 12 for transmitting a control signal to the underwater floating body 4 or transmitting data acquired by the underwater floating body 4 to the outside. Examples of the control signal include a set depth of the underwater floating body 4, a pitch angle of the propeller 8 (propeller mounting angle with respect to the propeller axis), an emergency emergency stop command, and the like. The data includes a current voltage value of the generator, a seawater temperature, a rotation speed and a pitch of the propeller 8, and the like. The antenna 12 and the underwater floating body 4 are communicably connected by a cable (not shown) laid along the cable body 6.
なお、図示しないが、端末浮体７ａと同等の機能を有する浮体は、索体６に配置された複数の浮体７に対して、必ずしも最後尾に配置する必要はない。また、複数の浮体７を端末浮体７ａとして機能させるようにしてもよい。 Although not shown, a floating body having a function equivalent to that of the terminal floating body 7a does not necessarily need to be arranged at the end of the plurality of floating bodies 7 arranged on the cable body 6. Further, a plurality of floating bodies 7 may function as terminal floating bodies 7a.
制御信号は、地上基地１３（又は母船）から人工衛星１４を介してアンテナ１２に送信され、データは、アンテナ１２から人工衛星１４を介して地上基地１３（又は母船）に伝送される。アンテナ１２が設けられた端末浮体７ａは、常に海面５に浮遊しているため、アンテナ１２と地上基地１３との間で安定した通信が可能である。 The control signal is transmitted from the ground base 13 (or the mother ship) to the antenna 12 via the satellite 14, and the data is transmitted from the antenna 12 to the ground base 13 (or the mother ship) via the satellite 14. Since the terminal floating body 7a provided with the antenna 12 is always floating on the sea surface 5, stable communication between the antenna 12 and the ground base 13 is possible.
なお、アンテナ１２は、浮体７が海中に沈められた状態でも海上に露出可能であれば、端末浮体７ａ以外の浮体７に配置するようにしてもよい。また、アンテナ１２は、一種類に限定されるものではなく、用途に応じて複数のアンテナ１２を配置するようにしてもよい。その際、端末浮体７ａと同等の浮体７を複数配置するようにしてもよい。 The antenna 12 may be arranged on the floating body 7 other than the terminal floating body 7a as long as the antenna 12 can be exposed on the sea even when the floating body 7 is submerged in the sea. Further, the antenna 12 is not limited to one type, and a plurality of antennas 12 may be arranged according to the application. At this time, a plurality of floating bodies 7 equivalent to the terminal floating bodies 7a may be arranged.
また、アンテナ１２には、水中浮遊体４の位置を周囲の船舶に認識させるための目印１５を配置するようにしてもよい。目印１５には、例えば、旗、ランプ（ＬＥＤ）等の外部から視認可能なものが使用されるが、これに限定されるものではない。例えば、目印１５は、一定距離内に船舶が侵入した際に、点灯したり、警報を鳴らしたり、警報信号を発信したりする機能を有していてもよい。 Further, the antenna 12 may be provided with a mark 15 for allowing a surrounding ship to recognize the position of the underwater floating body 4. As the mark 15, for example, a mark, a lamp (LED), or the like that can be visually recognized from the outside is used, but the mark 15 is not limited to this. For example, the mark 15 may have a function of turning on a light, sounding an alarm, or transmitting an alarm signal when a ship enters a certain distance.
かかる目印１５を配置することにより、目印１５の下方に索体６、浮体７、水中浮遊体４等が存在していることを認識させることができ、船舶が目印１５に近付かないようにすることで、船舶のスクリューが浮体７や索体６と干渉しないようにすることができる。 By arranging the mark 15, it is possible to recognize that the rope body 6, the floating body 7, the underwater floating body 4, and the like exist below the mark 15, so that the ship does not approach the mark 15. Thus, the screw of the ship can be prevented from interfering with the floating body 7 and the rope body 6.
索体６は、水中浮遊体４に第一巻取装置１６を介して接続されていてもよい。すなわち、水中浮遊体４の内部には、索体６を巻き取り又は繰り出し可能に巻き付けられたドラムを備える第一巻取装置１６が収容されている。かかる第一巻取装置１６により、索体６を巻き取ったり繰り出したりすることによって、海中に繰り出された索体６の長さを調節することができ、浮沈させる浮体７の個数を制御することができ、水中浮遊体４に加わる浮力を調節することができる。 The cable body 6 may be connected to the underwater floating body 4 via the first winding device 16. That is, the first winding device 16 including the drum wound so as to wind or unwind the cord 6 is accommodated inside the underwater floating body 4. By winding or unwinding the rope 6 by the first winding device 16, the length of the rope 6 unreeled into the sea can be adjusted, and the number of floating bodies 7 to be floated and sinked can be controlled. And the buoyancy applied to the underwater floating body 4 can be adjusted.
また、索体６は、水中浮遊体４の後端（海流Ｃの下流側の端部）に配置された筒状のガイド１７に挿通され海中に繰り出されていてもよい。ガイド１７は、例えば、図示したように、プロペラ８の中心に配設される。かかるガイド１７を配置することにより、索体６とプロペラ８との干渉を防止することができる。なお、ガイド１７の長さは、例えば、プロペラ８の半径の０．５倍〜１．０倍程度である。 In addition, the cord 6 may be inserted into a tubular guide 17 disposed at the rear end (the end on the downstream side of the ocean current C) of the underwater floating body 4 and may be drawn out into the sea. The guide 17 is disposed, for example, at the center of the propeller 8 as illustrated. By arranging such a guide 17, interference between the cord 6 and the propeller 8 can be prevented. The length of the guide 17 is, for example, about 0.5 to 1.0 times the radius of the propeller 8.
また、係留索３は、水中浮遊体４に第二巻取装置１８を介して接続されていてもよい。すなわち、水中浮遊体４の内部には、係留索３を巻き取り又は繰り出し可能に巻き付けられたドラムを備える第二巻取装置１８が収容されている。かかる第二巻取装置１８を配置することにより、係留索３を巻き取ったり繰り出したりすることによって、海中に繰り出された係留索３の長さを調節することができ、水中浮遊体４の深度を能動的に調節することができる。 Further, the mooring line 3 may be connected to the underwater floating body 4 via the second winding device 18. That is, a second winding device 18 including a drum wound so that the mooring line 3 can be wound or unreeled is accommodated inside the underwater floating body 4. By arranging the second winding device 18, the length of the mooring cable 3 unwound into the sea can be adjusted by winding or unwinding the mooring cable 3, and the depth of the underwater floating body 4 can be adjusted. Can be actively adjusted.
以下、上述した第一実施形態に係る浮力調整装置１の作用について説明する。図１に仮想線（一点鎖線）で示したように、海流Ｃの水温や速度の変化等の外乱要因によって、水中浮遊体４の深度が自然に深くなった場合、それまで海面５に浮かんでいた浮体７が海中に引き込まれ、海中に沈められる浮体７の個数が増えることから、水中浮遊体４に加わる浮力が大きくなり、水中浮遊体４に浮上力が働くこととなる。逆に、外乱要因によって水中浮遊体４の深度が浅くなった場合、それまで海中に位置していた浮体７が海面５に浮上し、海中に沈められる浮体７の個数が減ることから、水中浮遊体４に加わる浮力が小さくなり、水中浮遊体４に沈降力が働くこととなる。 Hereinafter, the operation of the buoyancy adjusting device 1 according to the above-described first embodiment will be described. As shown by an imaginary line (dashed-dotted line) in FIG. 1, when the depth of the underwater floating body 4 naturally increases due to disturbance factors such as a change in the temperature and velocity of the ocean current C, the body floats on the sea surface 5 until then. The floating body 7 that has been drawn is drawn into the sea, and the number of floating bodies 7 submerged in the sea increases, so that the buoyancy applied to the underwater floating body 4 increases, and a floating force acts on the underwater floating body 4. Conversely, when the depth of the underwater floating body 4 becomes shallow due to a disturbance factor, the floating body 7 previously located in the sea floats on the sea surface 5 and the number of the floating bodies 7 submerged in the sea decreases, so that the underwater floating body 4 decreases. The buoyancy applied to the body 4 is reduced, and the sinking force acts on the underwater floating body 4.
その結果、水温の変化や海流Ｃの強弱等の外乱要因によって水中浮遊体４の深度が変化しようとした場合であっても、水中浮遊体４の深度を一定の深度範囲内に保持することができる。このように、本実施形態に係る浮力調整装置１では、水中浮遊体４の浮力が、水中浮遊体４の深度変化に伴って海中に沈められる浮体７の個数の増減によって受動的に調整されることから、従来技術のようなポンプ等の圧送機器を搭載する必要がなく、かつ、それを作動させる必要もない。したがって、本実施形態に係る浮力調整装置１によれば、エネルギー消費量を低減しつつ、水中浮遊体４の浮力を調整することができる。 As a result, the depth of the underwater floating body 4 can be kept within a certain depth range even when the depth of the underwater floating body 4 is about to change due to disturbance factors such as a change in water temperature and the strength of the ocean current C. it can. As described above, in the buoyancy adjusting device 1 according to the present embodiment, the buoyancy of the underwater floating body 4 is passively adjusted by increasing or decreasing the number of the floating bodies 7 submerged in the sea with a change in the depth of the underwater floating body 4. Therefore, there is no need to mount a pumping device such as a pump as in the prior art, and it is not necessary to operate it. Therefore, according to the buoyancy adjusting device 1 according to the present embodiment, it is possible to adjust the buoyancy of the underwater floating body 4 while reducing the energy consumption.
また、上述したように、本実施形態では、第一巻取装置１６及び第二巻取装置１８を用いることにより、水中浮遊体４の浮力や深度を調節することができる。このとき、第一巻取装置１６と第二巻取装置１８とを同時に作動させ、第二巻取装置１８による係留索３の巻き取り長さと第一巻取装置１６による索体６の繰り出し長さとが等しくなるように制御してもよいし、第二巻取装置１８による係留索３の繰り出し長さと第一巻取装置１６による索体６の巻き取り長さとが等しくなるように制御してもよい。かかる制御によれば、海底２から海面５までの係留索３と索体６との加算長さが変わらないことから、海中に沈める浮体７の個数を変更することなく、水中浮遊体４の深度を変更することができる。 In addition, as described above, in the present embodiment, the buoyancy and the depth of the underwater floating body 4 can be adjusted by using the first winding device 16 and the second winding device 18. At this time, the first winding device 16 and the second winding device 18 are simultaneously operated, and the winding length of the mooring cable 3 by the second winding device 18 and the feeding length of the rope 6 by the first winding device 16 are set. May be controlled so that the length of the mooring cable 3 by the second winding device 18 is equal to the length of the cable body 6 wound by the first winding device 16. Is also good. According to this control, since the added length of the mooring cable 3 and the cable 6 from the seabed 2 to the sea surface 5 does not change, the depth of the underwater floating body 4 can be maintained without changing the number of floating bodies 7 submerged in the sea. Can be changed.
また、メンテナンス時には、水中浮遊体４を海面５の近くまで浮上させる必要がある。このとき、例えば、第一巻取装置１６によって索体６を最大限巻き取って浮力を最大に制御し、第二巻取装置１８によって係留索３を海底２から海面５までの距離に応じて繰り出すようにすればよい。 Further, at the time of maintenance, it is necessary to float the underwater floating body 4 close to the sea surface 5. At this time, for example, the first winding device 16 winds up the rope body 6 to the maximum and controls the buoyancy to the maximum, and the second winding device 18 moves the mooring line 3 according to the distance from the seabed 2 to the sea surface 5. It is sufficient to make it pay out.
（第二実施形態）
次に、図２を用いて、本発明の第二実施形態に係る水中浮遊体４の浮力調整装置１ａについて説明する。第二実施形態に係る水中浮遊体の浮力調整装置１ａは、第一実施形態と同様の構成を有する他、更に、一端が水中浮遊体４に接続され他端が海底２に着床可能に構成された錘用索１９と、錘用索１９の他端側に錘用索１９の長手方向に沿って配置された複数の錘体２０と、を備えている。なお、第一実施形態と同様の構成については、同じ符号を付して重複した説明を省略する。
(Second embodiment)
Next, a buoyancy adjusting device 1a of the underwater floating body 4 according to the second embodiment of the present invention will be described with reference to FIG. The buoyancy adjusting device 1a for underwater floating bodies according to the second embodiment has the same configuration as that of the first embodiment, and is further configured such that one end is connected to the underwater floating body 4 and the other end is able to land on the seabed 2. And a plurality of weight bodies 20 arranged on the other end side of the weight rope 19 along the longitudinal direction of the weight rope 19. In addition, about the structure similar to 1st embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.
錘用索１９は、一端が水中浮遊体４に接続され、他端が海底２に位置している。錘用索１９の他端側には、錘用索１９の長手方向に所定の間隔を隔てて複数の錘体２０が設けられている。ここで、本実施形態において「錘用索１９の他端側」とは、錘用索１９の中心よりも海底２に近い側を意味する。図２に示した第二実施形態では、錘体２０の個数は１０個であり、水中浮遊体４側の５個の錘体２０が海中に位置し、海底２側の５個の錘体２０が海底２に位置している。 The weight rope 19 has one end connected to the underwater floating body 4 and the other end located on the sea floor 2. A plurality of weight bodies 20 are provided on the other end side of the weight rope 19 at predetermined intervals in the longitudinal direction of the weight rope 19. Here, in the present embodiment, the “other end side of the weight rope 19” means a side closer to the sea floor 2 than the center of the weight rope 19. In the second embodiment shown in FIG. 2, the number of the weights 20 is ten, five weights 20 on the underwater floating body 4 side are located in the sea, and five weights 20 on the seabed 2 side. Is located on the seabed 2.
錘体２０は、例えば、金属球体や中実樹脂球体等により形成される。錘体２０の比重は、海水の比重よりも大きく設定される。錘体２０の個数は任意であるが、例えば、５〜１０個程度に設定される。また、錘体２０同士の間隔は任意であるが、例えば、５〜１０メートル程度に設定される。また、本実施形態において、錘用索１９の最後尾に配設された錘体２０を、説明の便宜上、端末錘体２０ａと称する。端末錘体２０ａは、他の錘体２０よりも体積（重量）が大きく、他の錘体２０よりも浮上し難いように構成してもよい。 The weight 20 is formed of, for example, a metal sphere or a solid resin sphere. The specific gravity of the weight 20 is set larger than the specific gravity of seawater. The number of the weight bodies 20 is arbitrary, but is set, for example, to about 5 to 10 pieces. The distance between the weights 20 is arbitrary, but is set, for example, to about 5 to 10 meters. In the present embodiment, the weight 20 disposed at the end of the weight cable 19 is referred to as a terminal weight 20a for convenience of explanation. The terminal weight 20a may have a larger volume (weight) than the other weights 20, and may be configured to be less likely to float than the other weights 20.
なお、図示しないが、端末錘体２０ａと同等の機能を有する錘体は、錘用索１９に配置された複数の錘体２０に対して、必ずしも最後尾に配置する必要はない。また、複数の錘体２０を端末錘体２０ａとして機能させるようにしてもよい。 Although not shown, the weight having the same function as the terminal weight 20a does not necessarily need to be disposed at the end of the plurality of weights 20 disposed on the weight cable 19. In addition, a plurality of weights 20 may function as the terminal weight 20a.
錘用索１９は、水中浮遊体４に第三巻取装置２１を介して接続されていてもよい。すなわち、水中浮遊体４の内部には、錘用索１９を巻き取り又は繰り出し可能に巻き付けられたドラムを備える第三巻取装置２１が収容されている。かかる第三巻取装置２１を配置することにより、錘用索１９を巻き取ったり繰り出したりすることによって、海中に繰り出された錘用索１９の長さを調節することができ、着底される錘体２０の個数を制御することができ、水中浮遊体４に加わる浮力を調節することができる。 The weight cable 19 may be connected to the underwater floating body 4 via the third winding device 21. That is, the third winding device 21 including the drum wound so as to wind or unwind the weight cable 19 is accommodated inside the underwater floating body 4. By arranging the third winding device 21, the length of the weight rope 19 unwound into the sea can be adjusted by winding or unwinding the weight rope 19, and the bottom is landed. The number of the weight bodies 20 can be controlled, and the buoyancy applied to the underwater floating body 4 can be adjusted.
具体的には、水温の変化や海流Ｃの強弱等の外乱要因によって、水中浮遊体４の深度が深くなった場合、それまで水中に浮遊していた錘体２０が海底２に着底し、水中に浮遊する錘体２０の個数が減ることから、水中浮遊体４に加わる沈降力が小さくなり、水中浮遊体４に浮上力が働くこととなる。逆に、外乱要因によって水中浮遊体４の深度が浅くなった場合、それまで海底２に着底していた錘体２０が水中に引き上げられ、水中に浮遊する錘体２０の個数が増えることから、水中浮遊体４に加わる沈降力が大きくなり、水中浮遊体４に沈降力が働くこととなる。 Specifically, when the depth of the underwater floating body 4 becomes deep due to a disturbance factor such as a change in water temperature or the strength of the ocean current C, the weight 20 previously floating in the water has landed on the seabed 2, Since the number of the weights 20 floating in the water is reduced, the sedimentation force applied to the underwater floating body 4 is reduced, and the floating force acts on the underwater floating body 4. Conversely, when the depth of the underwater floating body 4 becomes shallow due to a disturbance factor, the weights 20 that have landed on the seabed 2 until then are lifted into the water, and the number of the weights 20 floating in the water increases. Then, the sedimentation force applied to the underwater floating body 4 increases, and the sedimentation force acts on the underwater floating body 4.
このように、本実施形態によれば、浮体７による浮力調整に加えて、錘体２０による浮力調整も水中浮遊体４に作用させることができ、浮力調整の感度や精度を向上させることができる。また、第二実施形態に係る浮力調整装置１においても、水中浮遊体４の浮力が、水中浮遊体４の深度変化に伴って海中に沈められる浮体７及び着底される錘体２０の個数の増減によって受動的に調整されることから、従来技術のようなポンプ等の圧送機器を搭載する必要がなく、かつ、それを作動させる必要もない。 As described above, according to the present embodiment, in addition to the buoyancy adjustment by the floating body 7, the buoyancy adjustment by the weight 20 can also act on the underwater floating body 4, and the sensitivity and accuracy of the buoyancy adjustment can be improved. . Also in the buoyancy adjusting device 1 according to the second embodiment, the buoyancy of the underwater floating body 4 is reduced by the number of the floating bodies 7 submerged in the sea with the change in the depth of the underwater floating body 4 and the number of the weight bodies 20 to be landed. Since it is adjusted passively by increasing or decreasing, there is no need to mount a pumping device such as a pump as in the prior art, and it is not necessary to operate it.
また、本実施形態に係る浮力調整装置１では、２種類の浮力調整手段を有していることから、例えば、一方の浮力調整手段が作用しない場合であっても、他方の浮力調整手段によって水中浮遊体４の浮力を調整することもできる。 In addition, since the buoyancy adjusting device 1 according to the present embodiment has two types of buoyancy adjusting means, for example, even if one buoyancy adjusting means does not work, the other buoyancy adjusting means performs underwater. The buoyancy of the floating body 4 can be adjusted.
（参考例）
次に、図３を用いて、参考例に係る水中浮遊体４の浮力調整装置１ｂについて説明する。参考例に係る水中浮遊体４の浮力調整装置１ｂは、第二実施形態の構成から第一実施形態の構成を削除したものであり、上述した錘用索１９と錘体２０とを備えている。かかる参考例においても、錘用索１９及び錘体２０を用いることにより、水中浮遊体４の浮力を受動的に調整することができ、従来技術のようなポンプ等の圧送機器を搭載する必要がなく、かつ、それを作動させる必要もない。
(Reference example)
Next, a buoyancy adjusting device 1b of the underwater floating body 4 according to the reference example will be described with reference to FIG. The buoyancy adjusting device 1b of the underwater floating body 4 according to the reference example is obtained by removing the configuration of the first embodiment from the configuration of the second embodiment, and includes the weight cable 19 and the weight 20 described above. . Also in this reference example, by using the weight cable 19 and the weight body 20, the buoyancy of the underwater floating body 4 can be passively adjusted, and it is necessary to mount a pumping device such as a pump as in the related art. There is no need to activate it.
以上、添付図面を参照しつつ本発明の好適な実施形態について説明したが、本発明は上述した各実施形態に限定されないことは勿論であり、特許請求の範囲に記載された範疇における各種の変更例又は修正例についても、本発明の技術的範囲に属することは言うまでもない。 As described above, the preferred embodiments of the present invention have been described with reference to the accompanying drawings. However, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications within the scope described in the claims are possible. It goes without saying that examples or modified examples also belong to the technical scope of the present invention.
１，１ａ，１ｂ 浮力調整装置
２ 海底
３ 係留索
４ 水中浮遊体
５ 海面
６ 索体
７ 浮体
７ａ 端末浮体
８ プロペラ
９ アンカー
１０ 海底接続箱
１１ 海底ケーブル
１２ アンテナ
１３ 地上基地
１４ 人工衛星
１５ 目印
１６ 第一巻取装置
１７ ガイド
１８ 第二巻取装置
１９ 錘用索
２０ 錘体
２０ａ 端末錘体
２１ 第三巻取装置
Reference Signs List 1, 1a, 1b Buoyancy adjuster 2 Sea floor 3 Mooring cable 4 Underwater floating body 5 Sea surface 6 Cable body 7 Floating body 7a Terminal floating body 8 Propeller 9 Anchor 10 Submarine connection box 11 Submarine cable 12 Antenna 13 Ground base 14 Satellite 15 Mark 16 One take-up device 17 Guide 18 Second take-up device 19 Weight rope 20 Weight 20a Terminal weight 21 Third take-up device
Claims (8)
一端が前記水中浮遊体に接続され他端が水面に浮遊可能に構成された索体と、
該索体の他端側に前記索体の長手方向に沿って配置された複数の浮体と、を備え、
前記複数の浮体のうち、少なくとも一つの浮体が水面に浮遊し、残りの浮体が水中に沈められており、前記水中浮遊体の深度変化に伴って海中に沈められる前記浮体の個数の増減により前記水中浮遊体の浮力を受動的に調整するようにした、
ことを特徴とする水中浮遊体の浮力調整装置。 A buoyancy adjusting device for an underwater floating body connected to a water floor via a mooring line,
A cable body having one end connected to the underwater floating body and the other end configured to be floatable on the water surface,
A plurality of floating bodies arranged along the longitudinal direction of the rope body at the other end side of the rope body,
Among the plurality of floating bodies, at least one floating body floats on the water surface, the remaining floating bodies are submerged in water, and the number of the floating bodies submerged in the sea with a change in the depth of the underwater floating body increases or decreases the number of the floating bodies. The buoyancy of underwater floating bodies is adjusted passively.
An apparatus for adjusting the buoyancy of a floating body in water.
An ocean current power generation device comprising: an underwater floating body connected to a seabed via a mooring line; and a propeller disposed on the underwater floating body, wherein the propeller is rotated by an ocean current to generate power. An ocean current power generation device comprising the buoyancy adjustment device according to any one of claims 7 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015134838A JP6646865B2 (en) | 2015-07-04 | 2015-07-04 | Buoyancy adjustment device for underwater floating bodies and ocean current generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015134838A JP6646865B2 (en) | 2015-07-04 | 2015-07-04 | Buoyancy adjustment device for underwater floating bodies and ocean current generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2017013721A JP2017013721A (en) | 2017-01-19 |
| JP6646865B2 true JP6646865B2 (en) | 2020-02-14 |
Family
ID=57829613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015134838A Active JP6646865B2 (en) | 2015-07-04 | 2015-07-04 | Buoyancy adjustment device for underwater floating bodies and ocean current generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6646865B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7197896B2 (en) * | 2017-11-22 | 2022-12-28 | 国立大学法人 長崎大学 | Tidal power generation system and mooring equipment |
| JP6939532B2 (en) * | 2017-12-26 | 2021-09-22 | 株式会社Ihi | Underwater equipment |
| JP7462895B2 (en) * | 2019-08-23 | 2024-04-08 | 古河電気工業株式会社 | Submarine cable with buoyancy and floating offshore wind power generation system |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52161088U (en) * | 1976-05-30 | 1977-12-07 | ||
| JPS5364393A (en) * | 1976-11-20 | 1978-06-08 | Mitsui Eng & Shipbuild Co Ltd | Mooring buoy |
| JPH0511117Y2 (en) * | 1985-06-17 | 1993-03-18 | ||
| JPH0414317Y2 (en) * | 1988-05-20 | 1992-03-31 | ||
| JP2902331B2 (en) * | 1995-08-16 | 1999-06-07 | 三菱重工業株式会社 | Ship towing equipment |
| JP2000085678A (en) * | 1998-09-08 | 2000-03-28 | Bridgestone Corp | Mooring rope |
| AR021591A1 (en) * | 1999-06-29 | 2002-07-31 | Mcdermott David Ken | LOOPING DEVICE |
| JP2002266743A (en) * | 2001-03-12 | 2002-09-18 | Hideo Masubuchi | Ocean current power generating device |
| JP2005352868A (en) * | 2004-06-11 | 2005-12-22 | Shikou:Kk | Light beacon collision warning apparatus and method for preventing collision with light beacon |
| JP2006160025A (en) * | 2004-12-06 | 2006-06-22 | Rikogaku Shinkokai | Underwater moving body and aerial moving body |
| JP5346197B2 (en) * | 2008-10-08 | 2013-11-20 | 株式会社緑洲 | Luminous lifebuoy |
| PT105792A (en) * | 2011-07-05 | 2013-01-07 | Omnidea Lda | SUBMERSAL PLATFORM |
| JP6132088B2 (en) * | 2013-04-22 | 2017-05-24 | 株式会社Ihi | Ocean current power generator |
| KR20140101710A (en) * | 2014-07-28 | 2014-08-20 | 임성만 | The method of fixing a running water power generator using lifting power |
-
2015
- 2015-07-04 JP JP2015134838A patent/JP6646865B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017013721A (en) | 2017-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9910176B2 (en) | Method and system of a controllable tail buoy | |
| AU2006303131B2 (en) | Buoy | |
| US8817574B2 (en) | Method and system of a compound buoy | |
| WO2015194062A1 (en) | Ocean data measurement system | |
| CN102183789A (en) | System for adjusting geophysical sensor streamer front end towing depth | |
| GB2460309A (en) | Submersible turbine apparatus | |
| US6564741B2 (en) | Telescoping spar platform and method of using same | |
| JP6646865B2 (en) | Buoyancy adjustment device for underwater floating bodies and ocean current generator | |
| ES2896337T3 (en) | Battery pack for marine subsurface | |
| EP2281115A1 (en) | System and method for deploying and retrieving a wave energy converter | |
| KR102311739B1 (en) | Structure of a ocean observation buoy resistant to waves | |
| TW201814992A (en) | Cable laying structure and wind power generation system | |
| US20150117148A1 (en) | Marine streamer inertial navigating drag body | |
| KR101982927B1 (en) | Hydrosphere monitoring system and hydrosphere monitoring device | |
| CN210175084U (en) | Constant tension control-based suspension anchor cable accurate positioning buoy device | |
| US20190085817A1 (en) | Energy conversion device | |
| CN106460775B (en) | System and method for obtaining energy from surface wave | |
| KR101016456B1 (en) | Tidal current power plant | |
| JP2018053802A (en) | Wave power generation device and method for installing wave power generation device | |
| KR102034347B1 (en) | Tidal Current Power Generator Construction System Using Guide Wire | |
| KR101901817B1 (en) | Vortex induced motion reduction device for marine floating body | |
| JP2019182184A (en) | Depth adjustment system and depth adjustment method | |
| KR102020108B1 (en) | Tidal Current Power Generator Construction System With Easy Submarine Cable Installation | |
| JP6376460B2 (en) | Routine underwater floatation | |
| JP6814606B2 (en) | Current power generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180529 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20190422 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190528 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190726 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20191212 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20191225 |
|
| R151 | Written notification of patent or utility model registration |
Ref document number: 6646865 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |