JP7828572B2

JP7828572B2 - Floating offshore wind power plant with propulsion system and attached hydrogen plant

Info

Publication number: JP7828572B2
Application number: JP2023223862A
Authority: JP
Inventors: 龍夫高橋
Original assignee: 株式会社高橋監理
Priority date: 2023-12-13
Filing date: 2023-12-13
Publication date: 2026-03-12
Anticipated expiration: 2043-12-13
Also published as: JP2025094865A

Description

本発明は、風力発電により発電した電気で水電解装置により水を電気分解し水素を生成すると共に、推進装置により自航することができるように構成した浮体式洋上風力発電所に関するものである。This invention relates to a floating offshore wind power plant configured to generate hydrogen by electrolyzing water using electricity generated by wind power, and to be self-propelled by a propulsion system.

近年、再生可能エネルギー利用の増加に伴い、洋上は風を遮る障害物が無く、風向き、風速が一定していて変わらないことから安定した電力を得られることが期待される。
現在、実用化されている洋上風力発電装置の構造は、陸上で稼働している装置と同様であり、洋上では大地に比べて設置するうえでの制約が少ないため、今後は、洋上での設置が増えていくものと考えられる。 In recent years, with the increasing use of renewable energy, the open sea offers a stable source of electricity because there are no obstacles to block the wind, and the wind direction and speed remain constant.
Currently, the structure of offshore wind power generation equipment in practical use is similar to that of equipment operating on land. Since there are fewer installation constraints at sea compared to on land, it is expected that offshore installations will increase in the future.

現在、ヨーロッパ等で普及が進んでいる支柱が海底まで到達している海底固定式の洋上風力発電の場合は水深約５０ｍ位までの比較的水深が浅い場所に適しているが、日本の場合は、水深が比較的浅い大陸棚の面積が少ないため、日本では、風力発電装置を洋上に浮かべ、鎖、ワイヤーロープ等で海底に係留することにより位置を保持する浮体式に移行しつつあるのが現状である。Currently, in Europe and other regions, the seabed-mounted offshore wind power generation system, where the support structure reaches the seabed, is becoming widespread and is suitable for relatively shallow waters of up to about 50 meters. However, in Japan, due to the limited area of continental shelves with relatively shallow waters, the current trend is towards floating wind power generation systems, where the wind turbines float on the seabed and are moored to the seabed with chains, wire ropes, etc.

浮体式洋上風力発電装置は、水中に配置した浮体部と、浮体部に立設した塔部で構成され、塔部の頂部にナセルとブレードで構成した風力発電装置とを備え、鎖、ワイヤーロープ等により海底に係留することにより浮体式洋上風力発電所の位置を保持させている。
このように構成することにより、水深２００ｍほどの海域でも、浮体式洋上風力発電装置を設置することが可能である。
現在、実用化されている浮体式洋上風力技術には、主に、スパー型、セミサブ型、バージ型、ＴＬＰ型の４種類の形式がある。 A floating offshore wind power generation system consists of a floating section placed in the water and a tower section erected on the floating section. The top of the tower section is equipped with a wind power generation device consisting of a nacelle and blades, and the floating offshore wind power generation system maintains its position by being moored to the seabed with chains, wire ropes, etc.
This configuration makes it possible to install floating offshore wind power generation equipment even in sea areas with a depth of about 200 meters.
Currently, there are four main types of floating offshore wind power technologies that are in practical use: spar type, semi-submersible type, barge type, and TLP type.

従来、指定された海域の位置に浮体式の洋上風力発電装置を設置するためには、浮体を設置海域まで台船等により曳航して係留したあと、鎖、ワイヤーロープ等により海底に係留し、クレーン船等によって上部構造体を浮体の上端部に移動させ、浮体と上部構造体を連結させていた。Traditionally, in order to install a floating offshore wind power generation device at a designated location in the sea area, the floating structure was towed to the installation area by a barge or similar vessel and moored there. Then, it was moored to the seabed with chains, wire ropes, etc., and the superstructure was moved to the upper end of the floating structure using a crane ship or similar vessel, and the floating structure and the superstructure were connected.

しかしながら、浮体式洋上風力発電所が設置される水深５０ｍ以上の海域は、一般的な海洋工事が行われる海域に比べて海象条件が厳しい場合が多く、浮体式洋上風力発電所の設置作業は、海象条件の厳しい状況下で海象条件の比較的穏やかな時期を見計らって実施しなければならないため、設置作業の実施時期や期間が限定されるという問題があった。However, the sea areas with depths of 50 meters or more where floating offshore wind power plants are installed often have more severe oceanographic conditions than areas where general marine construction is carried out. As a result, the installation work for floating offshore wind power plants must be carried out under severe oceanographic conditions, taking advantage of periods when the oceanographic conditions are relatively calm. This has led to the problem of limited timing and duration for the installation work.

さらに、浮体式洋上風力発電装置の設置は、大型作業船を用いて繊細な作業が要求されるため、建設コストの増加を招くといった問題もあった。Furthermore, the installation of floating offshore wind turbines requires delicate work using large work vessels, which leads to increased construction costs.

さらに、日本の近海では水深５０ｍ～２００ｍほどの海域は狭く限られており、そのため、浮体式洋上風力発電装置を設置することができる海域も限られた。Furthermore, the areas of sea around Japan with depths of 50m to 200m are narrow and limited, which means that the areas where floating offshore wind power generation facilities can be installed are also limited.

以上の現状に鑑み、本発明は、浮体式洋上風力発電装置を海底に係留するための鎖、ワイヤーロープ等を不用とし、風力発電装置で発電した電気で推進装置を稼働させ浮体式洋上風力発電装置を洋上の同一場所に停留させると共に、海水を電気分解し生成した水素を貯蔵する浮体式洋上風力発電所を提供することを課題とする。In view of the above situation, the present invention aims to provide a floating offshore wind power plant that eliminates the need for chains, wire ropes, etc., for mooring the floating offshore wind power generation device to the seabed, operates a propulsion system using electricity generated by the wind power generation device to keep the floating offshore wind power generation device stationary in the same location offshore, and stores hydrogen produced by electrolyzing seawater.

かかる課題を解決するため、請求項１に記載の発明は、複数枚のブレードと増速機と発電機を内蔵したナセルを支えるタワーで構成した浮体式洋上風力発電所において、洋上に配置するタワー部（４）を円錐形をした鉄筋コンクリート構造で構築し、頂上部（３３）を平面状の円形で形成し、タワー部上部直径（Ａ）は直径５ｍの円形で形成し、タワー部上部スラブ厚さ（Ｂ）は５００ｍｍ、タワー部（４）の頂上部（３３）からタワー底部（３９）までのタワー部高さ（Ｃ）は９７ｍ、タワー部（４）のタワー部土台（４０）を構成するタワー底部スラブ厚さ（Ｄ）は１ｍ、タワー部土台（４０）を構成するタワー土台直径（Ｓ）は円形で形成され直径は２５ｍ、タワー部（４）の下部には各階の高さが共に５ｍで４層構造の建屋（５）を構築したタワー部（４）と、水中に配置する浮力体部（８）は円筒形で鉄筋コンクリート構造で構築すると共に、浮力体部直径（Ｎ）の直径は１００ｍ、浮力体部（８）の前方傾斜部（３１）と後方傾斜部（３２）を除く浮力体部高さ（Ｊ）は１０ｍで形成し、浮力体部（８）の底面の前後に、陸地で構築した水素工場を併設した推進装置付き浮体式洋上風力発電所（１）を安定した状態で水上に浮かべるため、前方向と後方向の両方向の底部を、前方傾斜部角度（Ｍ）と、後方傾斜部角度（Ｐ）で示すように、共に１４度の角度で先端部と後端部に向けて傾斜させた状態で形成し、浮力体部（８）の内部には、複数個のバラスト水用タンクを設置し、前記バラスト水用タンクに海水を注入、又は排出することにより海面（７）の位置が支柱（６）の概ね上下中央になるように浮力体部（８）の浮力を調整すると共に、海面（７）に対する水素工場を併設した推進装置付き浮体式洋上風力発電所（１）の傾きも複数個のバラスト水用タンクに海水を注入、又は排出することにより水平状態を維持するように構成し、さらに鉄筋コンクリート構造で内部を空洞で構築した浮力体部（８）の鉄筋コンクリートの厚さは、上部、下部、外周面共に全て２００ｍｍで形成し、さらに浮力体部（８）の上部の中央に竪穴区画（３４）を貫通させるため直径４ｍの穴を形成した浮力体部（８）と、タワー部（４）と浮力体部（８）を連結するため、浮力体部（８）の上面の中心から半径１０５０ｃｍの円周上の、水平面で見たときに４５度ごとに放射状に延設された位置に直径２ｍ、肉厚３０ｍｍ、長さ１０ｍの鋼管で成形した８本の支柱（Ａ）（４５）、支柱（Ｂ）（４６）、支柱（Ｃ）（４７）、支柱（Ｄ）（４８）、支柱（Ｅ）（４９）、支柱（Ｆ）（５０）、支柱（Ｇ）（５１）、支柱（Ｈ）（５２）の中心が位置するように垂直に取り付けられると共に、８本の支柱（Ａ）（４５）、支柱（Ｂ）（４６）、支柱（Ｃ）（４７）、支柱（Ｄ）（４８）、支柱（Ｅ）（４９）、支柱（Ｆ）（５０）、支柱（Ｇ）（５１）、支柱（Ｈ）（５２）の上部を、タワー底部（３９）の下面の中心と浮力体部（８）の中心が一直線状に合致したタワー部土台（４０）の下面に取り付けた支柱（６）と、タワー部（４）の概ね頂上部（３３）からタワー部土台（４０）を貫通し、浮力体部（８）の中心部の概ね底部まで、一点鎖線（Ｃ）（４１）で示すように概ね直径４ｍの円筒形で形成した竪穴区画（３４）と、推進装置（１２）に対して常に安定した電力を供給できるように、ナセル（３）の内部の発電機で発電した電気を浮力体部（８）の内部に設置した蓄電池設備（５９）に蓄えたのち、その電気で推進装置（１２）を駆動させることにより、無風状態でブレード（２）が回転せず発電機が発電しないような状態においても蓄電池設備（５９）の電力を活用して、水素工場を併設した推進装置付き浮体式洋上風力発電所（１）を洋上の同一場所に留まらせることが出来るように、推進装置（１２）は３６０度全方向にほぼ均等に推力を発生させることができる３６０度旋回式ポッド推進装置（１５）を浮力体部（８）の概ね中央下部に横並びに２基取り付け、２基の３６０度旋回式ポッド推進装置（１５）の回転数と旋回角度を、それぞれ別々に操作し駆動させることにより、水素工場を併設した推進装置付き浮体式洋上風力発電所（１）を前後左右方向に回頭させ、水素工場を併設した推進装置付き浮体式洋上風力発電所（１）を洋上の同一場所に停留させることが出来るように構成した推進装置（１２）と、タワー部（４）の建屋（５）の内部に、海水淡水化装置（５８）と水電解装置（５３）と水素液化装置（５４）を設置し、風力発電装置で発電した電気で海水を真水に変えるための海水淡水化装置（５８）と、真水を電気分解して水素を発生させる水電解装置（５３）と、電気分解した水素を液化させるための水素液化装置（５４）を稼働させ、海水から液体水素を製造すると共に、製造した液体水素を竪穴区画（３４）を経由させ、浮力体部（８）の内部に設置したコールドボックス内の液体水素貯蔵タンク（５７）に貯蔵させるように構成したことを特徴とする。 To solve the above problem, the invention described in claim 1 is a floating offshore wind power plant consisting of a tower supporting a nacelle containing multiple blades, a speed increaser, and a generator, wherein the tower section (4) placed offshore is constructed of a conical reinforced concrete structure, the top section (33) is formed as a flat circle, the upper diameter (A) of the tower section is formed as a circle with a diameter of 5 m, the upper slab thickness (B) of the tower section is 500 mm, the height (C) of the tower section (4) from the top section (33) to the bottom section (39) is 97 m, and the thickness (D) of the tower bottom slab constituting the tower base (40) of the tower section (4) is 1 m. The tower base (40) is formed in a circular shape with a diameter (S) of 25m, and a four-story building (5) with each floor being 5m high is constructed at the bottom of the tower (4). The buoyancy body (8) to be placed in the water is cylindrical and constructed of reinforced concrete, with a diameter (N) of 100m, and a height (J) of 10m, excluding the forward-sloping section (31) and the rear-sloping section (32) of the buoyancy body (8). In order to keep the floating offshore wind power plant (1) with a propulsion system and a hydrogen plant constructed on land stable on the water, the front and rear of the bottom surface of the buoyancy body (8) are positioned as follows: The bottom of both the forward and rearward sections is formed with a forward inclination angle (M) and a rearward inclination angle (P), both at 14 degrees towards the front and rear ends, respectively. Multiple ballast water tanks are installed inside the buoyancy body (8), and the buoyancy of the buoyancy body (8) is adjusted so that the position of the sea surface (7) is approximately in the vertical center of the support column (6) by injecting or discharging seawater into the ballast water tanks. The inclination of the floating offshore wind power plant (1) with a propulsion system and attached hydrogen plant relative to the sea surface (7) is also adjusted to a horizontal state by injecting or discharging seawater into the multiple ballast water tanks. The buoyancy body (8), which is constructed with a hollow interior using a reinforced concrete structure, has a reinforced concrete thickness of 200 mm on the top, bottom, and outer surface, and a 4 m diameter hole is formed in the center of the top of the buoyancy body (8) to allow a vertical shaft compartment (34) to pass through. In order to connect the tower section (4) and the buoyancy body (8), eight support columns (A) (45) and support columns (B) (46), which are made of steel pipes with a diameter of 2 m, a wall thickness of 30 mm, and a length of 10 m are positioned at positions that radiate outwards at 45-degree intervals when viewed horizontally, along a circumference with a radius of 1050 cm from the center of the top surface of the buoyancy body (8). , the center of the support columns (C) (47), (D) (48), (E) (49), (F) (50), (G) (51), and (H) (52) are positioned and the upper parts of the eight support columns (A) (45), (B) (46), (C) (47), (D) (48), (E) (49), (F) (50), (G) (51), and (H) (52) are attached to the lower surface of the tower base (40) where the center of the lower surface of the tower base (39) and the center of the buoyancy body (8) are aligned in a straight line, and the tower base is attached to the lower surface of the tower base (40) where the center of the lower surface of the tower base (39) and the center of the buoyancy body (8) are aligned in a straight line, and the tower base is attached to the lower surface of the tower base (4) where the center of the lower surface of the tower base (4) and the tower base A vertical shaft compartment (34) with a diameter of approximately 4 m is formed in a cylindrical shape, as shown by the dashed line (C) (41), penetrating (40) and extending roughly to the bottom of the center of the buoyancy body (8). Electricity generated by the generator inside the nacelle (3) is stored in a battery storage facility (59) installed inside the buoyancy body (8) so as to ensure a stable power supply to the propulsion device (12) at all times. This electricity is then used to drive the propulsion device (12), thereby utilizing the power from the battery storage facility (59) even in windless conditions where the blades (2) do not rotate and the generator does not generate power, thus enabling a floating offshore wind power plant (1) with a propulsion device and an attached hydrogen plant. To enable the floating offshore wind power plant (1) with a hydrogen plant to remain in the same location at sea, the propulsion system (12) is configured to allow the floating offshore wind power plant (1) with a hydrogen plant to remain in the same location at sea. This is achieved by mounting two 360-degree rotating pod propulsion systems (15) side-by-side at the lower center of the buoyancy body (8), which are capable of generating thrust almost uniformly in all 360 degrees, and by independently operating and driving the rotation speed and rotation angle of the two 360-degree rotating pod propulsion systems (15). 12) The system is characterized in that a seawater desalination device (58), a water electrolysis device (53), and a hydrogen liquefaction device (54) are installed inside the building (5) of the tower section (4), and the seawater desalination device (58) is operated using electricity generated by the wind power generation device to convert seawater into fresh water, the water electrolysis device (53) generates hydrogen by electrolyzing fresh water, and the hydrogen liquefaction device (54) liquefies the hydrogen produced by electrolysis, thereby producing liquid hydrogen from seawater, and the produced liquid hydrogen is passed through a vertical shaft compartment (34) and stored in a liquid hydrogen storage tank (57) in a cold box installed inside the buoyancy body section (8) .

請求項１に記載の発明によれば、複数枚のブレードと増速機と発電機を内蔵したナセルを支えるタワーで構成した浮体式洋上風力発電所において、洋上に配置するタワー部（４）を円錐形をした鉄筋コンクリート構造で構築し、頂上部（３３）を平面状の円形で形成し、タワー部上部直径（Ａ）は直径５ｍの円形で形成し、タワー部上部スラブ厚さ（Ｂ）は５００ｍｍ、タワー部（４）の頂上部（３３）からタワー底部（３９）までのタワー部高さ（Ｃ）は９７ｍ、タワー部（４）のタワー部土台（４０）を構成するタワー底部スラブ厚さ（Ｄ）は１ｍ、タワー部土台（４０）を構成するタワー土台直径（Ｓ）は円形で形成され直径は２５ｍ、タワー部（４）の下部には各階の高さが共に５ｍで４層構造の建屋（５）を構築したタワー部（４）と、水中に配置する浮力体部（８）は円筒形で鉄筋コンクリート構造で構築すると共に、浮力体部直径（Ｎ）の直径は１００ｍ、浮力体部（８）の前方傾斜部（３１）と後方傾斜部（３２）を除く浮力体部高さ（Ｊ）は１０ｍで形成し、浮力体部（８）の底面の前後に、陸地で構築した水素工場を併設した推進装置付き浮体式洋上風力発電所（１）を安定した状態で水上に浮かべるため、前方向と後方向の両方向の底部を、前方傾斜部角度（Ｍ）と、後方傾斜部角度（Ｐ）で示すように、共に１４度の角度で先端部と後端部に向けて傾斜させた状態で形成し、浮力体部（８）の内部には、複数個のバラスト水用タンクを設置し、前記バラスト水用タンクに海水を注入、又は排出することにより海面（７）の位置が支柱（６）の概ね上下中央になるように浮力体部（８）の浮力を調整すると共に、海面（７）に対する水素工場を併設した推進装置付き浮体式洋上風力発電所（１）の傾きも複数個のバラスト水用タンクに海水を注入、又は排出することにより水平状態を維持するように構成し、さらに鉄筋コンクリート構造で内部を空洞で構築した浮力体部（８）の鉄筋コンクリートの厚さは、上部、下部、外周面共に全て２００ｍｍで形成し、さらに浮力体部（８）の上部の中央に竪穴区画（３４）を貫通させるため直径４ｍの穴を形成した浮力体部（８）と、タワー部（４）と浮力体部（８）を連結するため、浮力体部（８）の上面の中心から半径１０５０ｃｍの円周上の、水平面で見たときに４５度ごとに放射状に延設された位置に直径２ｍ、肉厚３０ｍｍ、長さ１０ｍの鋼管で成形した８本の支柱（Ａ）（４５）、支柱（Ｂ）（４６）、支柱（Ｃ）（４７）、支柱（Ｄ）（４８）、支柱（Ｅ）（４９）、支柱（Ｆ）（５０）、支柱（Ｇ）（５１）、支柱（Ｈ）（５２）の中心が位置するように垂直に取り付けられると共に、８本の支柱（Ａ）（４５）、支柱（Ｂ）（４６）、支柱（Ｃ）（４７）、支柱（Ｄ）（４８）、支柱（Ｅ）（４９）、支柱（Ｆ）（５０）、支柱（Ｇ）（５１）、支柱（Ｈ）（５２）の上部を、タワー底部（３９）の下面の中心と浮力体部（８）の中心が一直線状に合致したタワー部土台（４０）の下面に取り付けた支柱（６）と、タワー部（４）の概ね頂上部（３３）からタワー部土台（４０）を貫通し、浮力体部（８）の中心部の概ね底部まで、一点鎖線（Ｃ）（４１）で示すように概ね直径４ｍの円筒形で形成した竪穴区画（３４）と、推進装置（１２）に対して常に安定した電力を供給できるように、ナセル（３）の内部の発電機で発電した電気を浮力体部（８）の内部に設置した蓄電池設備（５９）に蓄えたのち、その電気で推進装置（１２）を駆動させることにより、無風状態でブレード（２）が回転せず発電機が発電しないような状態においても蓄電池設備（５９）の電力を活用して、水素工場を併設した推進装置付き浮体式洋上風力発電所（１）を洋上の同一場所に留まらせることが出来るように、推進装置（１２）は３６０度全方向にほぼ均等に推力を発生させることができる３６０度旋回式ポッド推進装置（１５）を浮力体部（８）の概ね中央下部に横並びに２基取り付け、２基の３６０度旋回式ポッド推進装置（１５）の回転数と旋回角度を、それぞれ別々に操作し駆動させることにより、水素工場を併設した推進装置付き浮体式洋上風力発電所（１）を前後左右方向に回頭させ、水素工場を併設した推進装置付き浮体式洋上風力発電所（１）を洋上の同一場所に停留させることが出来るように構成した推進装置（１２）と、タワー部（４）の建屋（５）の内部に、海水淡水化装置（５８）と水電解装置（５３）と水素液化装置（５４）を設置し、風力発電装置で発電した電気で海水を真水に変えるための海水淡水化装置（５８）と、真水を電気分解して水素を発生させる水電解装置（５３）と、電気分解した水素を液化させるための水素液化装置（５４）を稼働させ、海水から液体水素を製造すると共に、製造した液体水素を竪穴区画（３４）を経由させ、浮力体部（８）の内部に設置したコールドボックス内の液体水素貯蔵タンク（５７）に貯蔵させるように構成したことにより、超高層ビル等の建築現場で培った技術を活用し製作日数を大幅に短縮し、浮体式洋上風力発電所で得られた電気出力を電源として水を電気分解して水素を生成すると共に、発電した電気で推進装置を稼働させ、同一場所に停留させることが可能となった。 According to the invention described in claim 1, in a floating offshore wind power plant consisting of a tower supporting a nacelle containing multiple blades, a speed increaser, and a generator, the tower section (4) placed offshore is constructed of a conical reinforced concrete structure, the top section (33) is formed as a flat circle, the upper diameter (A) of the tower section is formed as a circle with a diameter of 5 m, the upper slab thickness (B) of the tower section is 500 mm, the height (C) of the tower section (4) from the top section (33) to the bottom section (39) is 97 m, the thickness (D) of the tower bottom slab constituting the tower base (40) of the tower section (4) is 1 m, and the tower base diameter constituting the tower base (40) (S) is formed in a circular shape with a diameter of 25m, and a four-story building (5) with each floor being 5m high is constructed at the base of the tower section (4). The buoyancy section (8) to be placed in the water is cylindrical and constructed of reinforced concrete, with a diameter (N) of 100m, and a height (J) of 10m excluding the forward-sloping section (31) and rear-sloping section (32) of the buoyancy section (8). To stably float the floating offshore wind power plant (1) with a propulsion system and a hydrogen plant built on land on the front and rear of the bottom surface of the buoyancy section (8), the bottom surface in both the forward and rear directions is designed with a forward-sloping section angle (M) and a rear-sloping section angle As shown in (P), both are formed with a 14-degree angle towards the front and rear ends, and multiple ballast water tanks are installed inside the buoyancy body (8). By injecting or discharging seawater into the ballast water tanks, the buoyancy of the buoyancy body (8) is adjusted so that the position of the sea surface (7) is approximately in the vertical center of the support column (6). At the same time, the tilt of the floating offshore wind power plant (1) with a propulsion system and attached hydrogen plant relative to the sea surface (7) is maintained horizontally by injecting or discharging seawater into the multiple ballast water tanks. Furthermore, the buoyancy body (8) is constructed of reinforced concrete with a hollow interior. The cleats are all formed with a thickness of 200 mm on the top, bottom, and outer surface, and a hole with a diameter of 4 m is formed in the center of the top of the buoyancy body (8) to allow a vertical hole compartment (34) to pass through. To connect the tower section (4) and the buoyancy body (8), eight support columns (A) (45), (B) (46), (C) (47), (D) (48), (E) (49), (F) (50), (G) (51), and (H) (52) are formed from steel pipes with a diameter of 2 m, a wall thickness of 30 mm, and a length of 10 m, extending radially at 45-degree intervals when viewed in the horizontal plane, along a circumference with a radius of 1050 cm from the center of the top surface of the buoyancy body (8). 4) ( To ensure a stable power supply to the offshore wind turbine (12), electricity generated by the generator inside the nacelle (3) is stored in a battery storage system (59) installed inside the buoyancy body (8), and then the propulsion device (12) is driven with this electricity. This allows the floating offshore wind power plant (1) with a hydrogen plant attached to it to remain in the same location offshore by utilizing the power from the battery storage system (59) even in windless conditions when the blades (2) do not rotate and the generator does not generate power. The propulsion device (12) is a 360-degree rotating pod propulsion device (15) that can generate thrust almost uniformly in all 360 degrees, installed inside the buoyancy body (8). A propulsion system (12) is installed horizontally in a row at the lower center of the structure, and the rotation speed and rotation angle of the two 360-degree rotating pod propulsion systems (15) are operated separately to drive the floating offshore wind power plant (1) with a hydrogen plant attached in the forward, backward, left, and right directions, and the floating offshore wind power plant (1) with a hydrogen plant attached is configured to be able to be stationary in the same location offshore. Inside the building (5) of the tower section (4), a seawater desalination system (58), a water electrolysis system (53), and a hydrogen liquefaction system (54) are installed, and the seawater desalination system (58) converts seawater into fresh water using electricity generated by the wind power generation system. By operating a water electrolysis device (53) that generates hydrogen by electrolyzing fresh water and a hydrogen liquefaction device (54) that liquefies the electrolyzed hydrogen, liquid hydrogen is produced from seawater. The produced liquid hydrogen is then passed through a vertical shaft compartment (34) and stored in a liquid hydrogen storage tank (57) in a cold box installed inside the buoyancy body (8). By utilizing technology cultivated at construction sites for skyscrapers and the like, the manufacturing time has been significantly reduced. It is now possible to generate hydrogen by electrolyzing water using the electrical output obtained from a floating offshore wind power plant as a power source, and to operate the propulsion system with the generated electricity, allowing the vehicle to remain stationary in the same location.

以下、この発明の実施の形態１について説明する。
［発明の実施の形態１］ Embodiment 1 of this invention will be described below.
[Embodiment 1 of the Invention]

図１乃至図５には、この発明の実施の形態１を示す。Figures 1 to 5 show Embodiment 1 of the present invention.

図１は、本発明の水素工場を併設した推進装置付き浮体式洋上風力発電所１を洋上に設置した状態を斜視図で示す。水素工場を併設した推進装置付き浮体式洋上風力発電所１はハブ１０に取り付けた３本のブレード２と、ナセル３の内部に設置した増速機、発電機、ヨー制御装置等と、さらに前記ナセル３をタワー部４に取り付けるための鋼管１１と、鉄筋コンクリート構造で構築したタワー部４と、さらにタワー部４と浮力体部８を連結させるため直径約２ｍ、肉厚約３０ｍｍ、長さ約１０ｍの鋼管で成形した８本の支柱６と、さらに水素工場を併設した推進装置付き浮体式洋上風力発電所１を洋上に浮かべて自立させ、浮体構造部としての役目を果たすため鉄筋コンクリート構造で内部を空洞で形成した浮力体部８で構成され、さらに浮力体部８の内部には、水素工場を併設した推進装置付き浮体式洋上風力発電所１が海面７に対して水平状態を保つと同時に横転しないようにバラスト水用タンク（図示せず）を複数個設置し、前記バラスト水用タンクに海水を注入、又は排出することにより海面７の位置が支柱６の概ね上下中央になるように浮力体部８の浮力を調整すると共に、海面７に対する水素工場を併設した推進装置付き浮体式洋上風力発電所１の傾きも複数個のバラスト水用タンクに海水を注入、又は排水することにより水素工場を併設した推進装置付き浮体式洋上風力発電所１が海面７に対して水平状態を維持できるように構成される。さらにナセル３の内部の発電機で発電した電気で海水を真水に変えるため、図３ｂの正面図で示すように建屋３の内部に設置した海水淡水化装置５８を稼働させ、さらに真水を水電解装置５３で電気分解して水素を発生させると共に、さらに図３ｂで示す推進装置１２を常に安定した状態で稼働させるため、ナセル３の内部の発電機で発電した電気を浮力体部８の内部に設置した蓄電池設備５９に蓄電させたうえで推進装置１２を稼働させる。なお、ナセル３の内部には発電効率向上のため、ブレード２を常に風向きと正対するように方位制御を行うため、鋼管２３に対して３６０度回動自在に回転させることができるようにヨー駆動装置（図示せず）が取り付けられる。Figure 1 is a perspective view showing the floating offshore wind power plant 1 with a propulsion system and an attached hydrogen plant of the present invention installed offshore. The floating offshore wind power plant 1 with a propulsion system and an attached hydrogen plant consists of three blades 2 attached to a hub 10, a speed increaser, generator, yaw control device, etc. installed inside a nacelle 3, a steel pipe 11 for attaching the nacelle 3 to the tower section 4, a tower section 4 constructed of reinforced concrete, eight support columns 6 formed from steel pipes with a diameter of approximately 2 m, a wall thickness of approximately 30 mm, and a length of approximately 10 m to connect the tower section 4 and the buoyancy section 8, and a buoyancy section 8 formed of reinforced concrete with a hollow interior to float and support the floating offshore wind power plant 1 with a propulsion system and an attached hydrogen plant on the sea and serve as a floating structure. Furthermore, multiple ballast water tanks (not shown) are installed inside the buoyancy body 8 to prevent the floating offshore wind power plant 1 with a propulsion system and attached hydrogen plant from capsizing while maintaining a horizontal position relative to the sea surface 7. By injecting or discharging seawater into the ballast water tanks, the buoyancy of the buoyancy body 8 is adjusted so that the position of the sea surface 7 is approximately in the vertical center of the support column 6. At the same time, the tilt of the floating offshore wind power plant 1 with a propulsion system and attached hydrogen plant relative to the sea surface 7 is also adjusted by injecting or discharging seawater into the multiple ballast water tanks so that the floating offshore wind power plant 1 with a propulsion system and attached hydrogen plant maintains a horizontal position relative to the sea surface 7. Furthermore, in order to convert seawater into fresh water using the electricity generated by the generator inside the nacelle 3, a seawater desalination device 58 installed inside the building 3 is operated as shown in the front view of Figure 3b. In addition, the fresh water is electrolyzed in a water electrolysis device 53 to generate hydrogen. Furthermore, in order to keep the propulsion device 12, shown in Figure 3b, running stably at all times, the electricity generated by the generator inside the nacelle 3 is stored in a battery storage device 59 installed inside the buoyancy body 8 before operating the propulsion device 12. In addition, to improve power generation efficiency, a yaw drive device (not shown) is installed inside the nacelle 3 so that the blades 2 can rotate 360 degrees relative to the steel pipe 23 in order to control their orientation so that they always face the wind direction.

図２は、図１で説明した水素工場を併設した推進装置付き浮体式洋上風力発電所１を正面図で示す。本発明では、推進装置１２に対して常に安定した電力を供給できるように、水素工場を併設した推進装置付き浮体式洋上風力発電所１で発電した電気を浮力体部８の内部に設置した蓄電池設備５９（図示せず）に蓄えたのち、その蓄電池設備５９から供給される電気で推進装置１２を駆動させることにより、無風状態でプレード２が回転せず発電機が発電しないような状態においても蓄電池設備５９の電力を活用して、水素工場を併設した推進装置付き浮体式洋上風力発電所１を海面７の同一場所に留まらせることが出来るように構成した。なお本発明における推進装置１２は、３６０度全方向にほぼ均等に推力を発生させることができる３６０度旋回式ポッド推進装置１５を、浮力体部８の概ね中央下部に横並びに２基取り付け、２基の３６０度旋回式ポッド推進装置１５の回転数と旋回角度を、それぞれ別々に操作し駆動させることにより、水素工場を併設した推進装置付き浮体式洋上風力発電所１を前後左右方向に回頭させ、水素工場を併設した推進装置付き浮体式洋上風力発電所１を海面７の同一場所に停留させることが可能になった。Figure 2 is a front view of the floating offshore wind power plant 1 with a propulsion system and an attached hydrogen plant, as described in Figure 1. In this invention, in order to always supply stable power to the propulsion system 12, the electricity generated by the floating offshore wind power plant 1 with a propulsion system and an attached hydrogen plant is stored in a battery storage system 59 (not shown) installed inside the buoyancy body 8, and then the propulsion system 12 is driven by the electricity supplied from the battery storage system 59. This configuration allows the floating offshore wind power plant 1 with a propulsion system and an attached hydrogen plant to remain in the same location on the sea surface 7 even in windless conditions where the blade 2 does not rotate and the generator does not generate power, by utilizing the power from the battery storage system 59. In this invention, the propulsion device 12 consists of two 360-degree rotating pod propulsion devices 15, which are capable of generating thrust almost uniformly in all 360 degrees. These devices are mounted side-by-side at approximately the lower center of the buoyancy body 8. By independently controlling the rotation speed and rotation angle of the two 360-degree rotating pod propulsion devices 15, it becomes possible to rotate the floating offshore wind power plant 1 with a hydrogen plant in the forward, backward, left, and right directions, and to keep the floating offshore wind power plant 1 with a hydrogen plant at the same location on the sea surface 7.

図３は、図１、図２で説明したタワー部４と支柱６と浮力体部８と推進装置１２を図３ａの平面図と、図３ｂの正面図で示す。タワー部４は円錐形をした鉄筋コンクリート構造で構築され、図５で示すようにタワー部上部直径Ａは直径約５ｍの円形で成形され、タワー部上部スラブ厚さＢは約５００ｍｍ、タワー部４の頂上部３３からタワー底部３９までのタワー部高さＣは約９７ｍ、タワー部４のタワー部土台４０を構成するタワー底部スラブ厚さＤは約１ｍ、タワー部土台４０を構成するタワー土台直径Ｓは円形で形成され直径は約２５ｍ、タワー部４の下部には、各階の高さが共に約５ｍで形成された４層構造（建屋１階３８、建屋２階３７、建屋３階３６、建屋４階３５で示す）の建屋５が構築される。浮力体部８は概ね円筒形で形成され、水素工場を併設した推進装置付き浮体式洋上風力発電所１を洋上に浮かべる浮体としての役目を果たすため内部を空洞で形成し、浮力体部８の上面中心とタワー部４の中央が一直線上になるように構築される。さらに図５で示すように浮力体部８は概ね円筒形で形成され浮力体部直径Ｎの直径は約１００ｍ、浮力体部８の前方傾斜部３１と後方傾斜部３２を除く浮力体部高さＪは約１０ｍで形成され、さらに図３で示すように浮力体部８の底面の前後に、陸地で構築した、水素工場を併設した推進装置付き浮体式洋上風力発電所１を安定した状態で水上に浮かべるため、前方向と後方向の両方向の底部を、前方傾斜部３１（底面と後方傾斜部３１との境目を図３ａの一点鎖線（Ａ）２９で示す）と、後方傾斜部３２（底面と後方傾斜部３２の境目を図３ａの一点鎖線（Ｂ）３０で示す）で示すように先端部と後端部に向けて、図５の前方傾斜部角度Ｍと、後方傾斜部角度Ｐで示すように共に約１４度の角度で傾斜させた状態で形成し、さらにタワー部４と浮力体部８を連結するため浮力体部８の上面の中央から均等な距離に直径約２ｍ、肉厚約３０ｍｍ、長さ約１０ｍの鋼管で成形した８本の支柱６を円周上に対して均等な角度で取り付けた状態を示す。なお図１で説明したとおり、浮力体部８の内部には、複数個のバラスト水用タンク（図示せず）を設置し、前記バラスト水用タンクに海水を注入、又は排出することにより図２で説明した海面７の位置が支柱６の概ね上下中央になるように浮力体部８の浮力を調整すると共に、海面７に対する水素工場を併設した推進装置付き浮体式洋上風力発電所１の傾きも複数個のバラスト水用タンクに海水を注入、又は排水することにより図２で説明した海面７に対して水平状態を維持するように構成される。 Figure 3 shows the tower section 4, support columns 6, buoyancy body section 8, and propulsion device 12 described in Figures 1 and 2, in a plan view (Figure 3a) and a front view (Figure 3b). The tower section 4 is constructed of a conical reinforced concrete structure, and as shown in Figure 5, the upper diameter A of the tower section is formed as a circle with a diameter of approximately 5 m, the upper slab thickness B of the tower section is approximately 500 mm, the height C of the tower section from the top 33 to the bottom 39 of the tower section 4 is approximately 97 m, the thickness D of the bottom slab that constitutes the tower base 40 of the tower section 4 is approximately 1 m, and the diameter S of the tower base that constitutes the tower base 40 is formed as a circle with a diameter of approximately 25 m. Below the tower section 4, a building 5 is constructed with a four-story structure (shown as the first floor 38, second floor 37, third floor 36, and fourth floor 35) where the height of each floor is approximately 5 m. The buoyancy body section 8 is formed in a generally cylindrical shape and is hollow inside in order to serve as a floating structure for floating offshore wind power plants 1 with propulsion systems and hydrogen plants on the ocean. It is constructed so that the center of the top surface of the buoyancy body section 8 and the center of the tower section 4 are in a straight line. Furthermore, as shown in Figure 5, the buoyancy body section 8 is formed in a generally cylindrical shape, with a diameter N of approximately 100 m, and a height J of the buoyancy body section 8, excluding the forward and rearward inclined sections 31 and 32, is approximately 10 m. Furthermore, as shown in Figure 3, the bottom surface of the buoyancy body section 8 has forward and rearward inclined sections 31 (the boundary between the bottom surface and the rearward inclined section 31 is shown by the dashed line (A) in Figure 3a) in order to keep the floating offshore wind power plants 1 with propulsion systems and hydrogen plants, which are constructed on land, stably floating on the water. As shown in 29, and as shown by the rearward inclined section 32 (the boundary between the bottom surface and the rearward inclined section 32 is shown by the dashed line (B) 30 in Figure 3a), the front and rear ends are formed with an inclination of approximately 14 degrees, as shown by the front inclined section angle M and the rearward inclined section angle P in Figure 5. Furthermore, in order to connect the tower section 4 and the buoyancy body section 8, eight support columns 6 made of steel pipes with a diameter of approximately 2 m, a wall thickness of approximately 30 mm, and a length of approximately 10 m are attached at equal distances from the center of the upper surface of the buoyancy body section 8 at equal angles to the circumference. As explained in Figure 1, multiple ballast water tanks (not shown) are installed inside the buoyancy body 8. By injecting or discharging seawater into the ballast water tanks, the buoyancy of the buoyancy body 8 is adjusted so that the position of the sea surface 7, as explained in Figure 2, is approximately in the vertical center of the support column 6. At the same time, the tilt of the floating offshore wind power plant 1 with a propulsion system and an attached hydrogen plant relative to the sea surface 7 is maintained horizontally relative to the sea surface 7, as explained in Figure 2, by injecting or discharging seawater into the multiple ballast water tanks.

さらにタワー部４の概ね頂上部３３からタワー土台４０を貫通し、浮力体部８の中心部の概ね底部まで、一点鎖線（Ｃ）４１で示すように概ね直径約４ｍの円筒形で形成した竪穴区画３４を構築し、さらに竪穴区画３４の内部には点検作業を行うための上下移動用階段（図示せず）と簡易リフト（図示せず）を取り付けることにより作業員が効率良く点検をすることが可能になった。Furthermore, a vertical shaft compartment 34, formed in the shape of a cylinder with a diameter of approximately 4 m, is constructed from approximately the top 33 of the tower section 4 through the tower base 40 to approximately the bottom of the center of the buoyancy body section 8, as shown by the dashed line (C) 41. In addition, a staircase (not shown) for vertical movement and a simple lift (not shown) for inspection work are installed inside the vertical shaft compartment 34, making it possible for workers to perform inspections efficiently.

このように構成したタワー部４の建屋５の内部に、海水を真水に変えるための海水淡水化装置５８と、水電解装置５３と、水素液化装置５４を設置し、前記海水淡水化装置５８で生成した真水を、ナセル３の内部の発電機で発電した電気で電気分解して水素を発生させるための水電解装置５３と、さらに電気分解した水素を液化させるための水素液化装置５４を稼働させることにより、海水から液体水素を製造すると共に、製造した液体水素を竪穴区画３４を経由させ浮力体部８の内部に設置したコールドボックス内の液体水素貯蔵タンク５７に貯蔵させるように構成した。このように構成することにより電気分解により生成した水素の体積を約８００分の１の液体水素に液化させ効率良く貯蔵することが可能になった。このようにして製造した液体水素は液化水素運搬船に積荷され移送される。Inside the building 5 of the tower section 4 configured in this way, a seawater desalination device 58 for converting seawater into fresh water, a water electrolysis device 53, and a hydrogen liquefaction device 54 are installed. The fresh water produced by the seawater desalination device 58 is electrolyzed using electricity generated by a generator inside the nacelle 3 to produce hydrogen in the water electrolysis device 53, and the hydrogen liquefaction device 54 is operated to further liquefy the electrolyzed hydrogen. In this way, liquid hydrogen is produced from seawater, and the produced liquid hydrogen is stored in a liquid hydrogen storage tank 57 in a cold box installed inside the buoyancy body section 8, passing through the vertical shaft compartment 34. With this configuration, it is possible to liquefy the volume of hydrogen produced by electrolysis into liquid hydrogen at approximately 1/800th of its original volume and store it efficiently. The liquid hydrogen produced in this way is loaded onto a liquefied hydrogen carrier and transported.

図４は、図１、図２で説明した支柱６と浮力体部８を図４ａの平面図と、図４ｂの正面図で示す。８本の支柱６は共に直径約２ｍ、肉厚３０ｍｍ、長さ１０ｍの円筒状の鋼管で成形され、図４ａの平面図で示すように浮力体部６の上面の中心から半径約１０５０ｃｍの円周上の、水平面で見たときに４５度ごとに放射状に延設された位置に８本の支柱（Ａ）４５、支柱（Ｂ）４６、支柱（Ｃ）４７、支柱（Ｄ）４８、支柱（Ｅ）４９、支柱（Ｆ）５０、支柱（Ｇ）５１、支柱（Ｈ）５２の中心が位置するように垂直に取り付けられると共に、８本の支柱（Ａ）４５、支柱（Ｂ）４６、支柱（Ｃ）４７、支柱（Ｄ）４８、支柱（Ｅ）４９、支柱（Ｆ）５０、支柱（Ｇ）５１、支柱（Ｈ）５２の上部のタワー部土台４０への取り付け位置は、図３で説明したタワー底部３９の下面の中心と浮力体部８の中心が一直線状に合致したタワー部土台４０の下面に取り付けられる。このようにタワー部４と浮力体部８を、８本の支柱６で連結する理由は、円筒形の丸い直径約２ｍの支柱６でタワー部４を支えることにより、海面の波のうねりによる抵抗を最小限に抑え、水素工場を併設した推進装置付き浮体式洋上風力発電所１の揺れを抑え、風に対してブレードを対峙させるためである。Figure 4 shows the support columns 6 and buoyancy body 8 described in Figures 1 and 2 in a plan view (Figure 4a) and a front view (Figure 4b). The eight support columns 6 are all formed from cylindrical steel pipes with a diameter of approximately 2 m, a wall thickness of 30 mm, and a length of 10 m. As shown in the plan view (Figure 4a), the eight support columns (A) 45, (B) 46, (C) 47, (D) 48, (E) 49, (F) 50, (G) 51, and (H) 51 are positioned radially at 45-degree intervals when viewed in the horizontal plane, along a circumference with a radius of approximately 1050 cm from the center of the upper surface of the buoyancy body 6. The eight support columns (A) 45, (B) 46, (C) 47, (D) 48, (E) 49, (F) 50, (G) 51, and (H) 52 are mounted vertically so that the center of the buoyancy body 8 is located on the base 40 of the tower section, where the center of the lower surface of the tower base 39 and the center of the buoyancy body 8, as explained in Figure 3, are aligned in a straight line. The reason for connecting the tower section 4 and the buoyancy body 8 with eight support columns 6 in this way is to minimize resistance from the swell of waves on the sea surface by supporting the tower section 4 with cylindrical support columns 6 with a diameter of approximately 2m, thereby suppressing the swaying of the floating offshore wind power plant 1 with a propulsion system and an attached hydrogen plant, and allowing the blades to face the wind.

図５は、図１、図２で説明したタワー部４、支柱６、浮力体部８の部材の寸法、角度をＡ～Ｓの記号で示す。タワー部４は円錐形で、頂上部３３は円形をした平面で形成され、頂上部３３のタワー部上部直径Ａは直径約５ｍの円形で形成し、さらに頂上部３３のタワー部上部スラブ厚さＢは約５００ｍｍで形成し、さらに一点鎖線（Ｃ）４１で示すように竪穴区画３４はタワー部３３の概ね上端部からタワー部土台４０を貫通させ浮力体部８の概ね下端部まで概ね直径約４ｍ、内部は高さ約１１６．３ｍの円筒形で形成される。さらにタワー部４の頂上部３３からタワー底部３９までのタワー部高さＣは約９７ｍで形成し、さらに４階建ての建屋５の、建屋４階高さＦは約５ｍ、建屋３階高さＧは約５ｍ、建屋２階高さＨは約５ｍ、建屋１階高さＩは約５ｍで形成し、さらにタワー部４の底部のタワー底部スラブ厚さＤは約１ｍで形成し、タワー部４の下部のタワー土台直径Ｔは直径約２５ｍの円筒形で形成される。さらに支柱６の８本の支柱高さＥは全て約１０ｍで形成し、さらに鉄筋コンクリート構造で内部を空洞で構築した浮力体部８の鉄筋コンクリートの厚さは、上部、下部、外周面共に全て約２００ｍｍで形成し、さらに浮力体部８の上部の中央には竪穴区画３４を貫通させるため直径約４ｍの穴が形成される。さらに浮力体部８の前後底部は前方向と後方向に向けて傾斜させた形状で形成し、さらに浮力体部８の浮力体部直径Ｎは直径約１００ｍの円筒状で形成し、さらに図３で説明した浮力体部８の前方傾斜部３１と後方傾斜部３２を除く浮力体部高さＪは約１０ｍで形成し、さらに図３で説明した浮力体部８の前方向と後方向の前方傾斜部３１と後方傾斜部３２の両方の先端部の前方傾斜部先端部高さＫと、後方傾斜部後端部高さＲは共に約３ｍで形成し、さらに図３で説明した前方傾斜部３１と後方傾斜部３２の前方傾斜部角度Ｍ、後方傾斜部角度Ｐは共に約１４度で形成し、図３で説明した前記前方傾斜部３１の前方傾斜部最大巾Ｌと、同様に前記後方傾斜部３２の後方傾斜部最大巾Ｑは共に約１２ｍで形成される。Figure 5 shows the dimensions and angles of the members of the tower section 4, support column 6, and buoyancy body section 8 described in Figures 1 and 2, indicated by symbols A to S. The tower section 4 is conical in shape, and the top section 33 is formed as a circular plane. The top section 33 has a diameter of approximately 5 m, and the top section slab thickness B is approximately 500 mm. Furthermore, as shown by the dashed line (C) 41, the vertical shaft section 34 extends from approximately the upper end of the tower section 33 through the tower base 40 to approximately the lower end of the buoyancy body section 8, and is formed as a cylindrical shape with a diameter of approximately 4 m and an internal height of approximately 116.3 m. Furthermore, the height C of the tower section 4, from the top 33 to the bottom 39, is approximately 97m. The height F of the fourth floor of the four-story building 5 is approximately 5m, the height G of the third floor is approximately 5m, the height H of the second floor is approximately 5m, and the height I of the first floor is approximately 5m. The thickness D of the tower bottom slab at the base of the tower section 4 is approximately 1m. The diameter T of the tower base at the bottom of the tower section 4 is formed as a cylinder with a diameter of approximately 25m. Furthermore, the height E of all eight support columns 6 is approximately 10m. The thickness of the reinforced concrete in the buoyancy body section 8, which is constructed of reinforced concrete with a hollow interior, is approximately 200mm on the top, bottom, and outer surface. Furthermore, a hole with a diameter of approximately 4m is formed in the center of the top of the buoyancy body section 8 to allow the vertical shaft compartment 34 to pass through. Furthermore, the front and rear bottoms of the buoyancy body 8 are formed in a shape that is inclined toward the front and rear directions, and the diameter N of the buoyancy body 8 is formed in a cylindrical shape with a diameter of approximately 100 m. Furthermore, the height J of the buoyancy body 8, excluding the forward inclined portion 31 and the rear inclined portion 32 as described in Figure 3, is formed to be approximately 10 m. Furthermore, the height K of the front inclined portion tip and the height R of the rear inclined portion tip of both the forward inclined portion 31 and the rear inclined portion 32 as described in Figure 3 are both formed to be approximately 3 m. Furthermore, the angle M of the front inclined portion and the angle P of the rear inclined portion of the front inclined portion 31 and the rear inclined portion 32 as described in Figure 3 are both formed to be approximately 14 degrees. Furthermore, the maximum width L of the front inclined portion 31 and the maximum width Q of the rear inclined portion 32 as described in Figure 3 are both formed to be approximately 12 m.

以下、この発明の実施の形態２について説明する。
［発明の実施の形態２］ Embodiment 2 of this invention will be described below.
[Embodiment 2 of the Invention]

図６は、この発明の実施の形態２を示す。上記発明の実施の形態１では、推進装置１２は２基の３６０度旋回式ポッド推進装置１５を浮力体部８の概ね中央下部に横並びに取り付けたのに対して、この発明の実施の形態２では、推進装置６９（具体的には、３６０度旋回式ポッド推進装置７０）を２基平行に並べて浮力体部６６の概ね後端に取り付け、２基の推進装置６９（具体的には３６０度旋回式ポッド推進装置７０）の回転数、旋回角度を変化させて制御することにより、本発明の水素工場を併設した推進装置付き浮体式洋上風力発電所１を洋上の同一場所に停留させることが出来るように構成した。その他の構造に関しては、この発明の実施の形態１と同様である。Figure 6 shows Embodiment 2 of the present invention. In Embodiment 1 of the present invention, the propulsion device 12 consists of two 360-degree rotating pod propulsion devices 15 mounted side by side at the lower center of the buoyancy body 8. In contrast, in Embodiment 2 of the present invention, two propulsion devices 69 (specifically, 360-degree rotating pod propulsion devices 70) are mounted parallel to each other at the rear end of the buoyancy body 66. By controlling the rotation speed and rotation angle of the two propulsion devices 69 (specifically, 360-degree rotating pod propulsion devices 70), the floating offshore wind power plant 1 with a hydrogen plant attached can be moored at the same location offshore. The rest of the structure is the same as in Embodiment 1 of the present invention.

以上、実施の形態に基づいて、本発明に係る水素工場を併設した推進装置付き浮体式洋上風力発電所について詳細に説明してきたが、本発明は、以上の実施の形態に限定されるものではなく、発明の趣旨を逸脱しない範囲において各種の改変をなしても、本発明の技術的範囲に属するのはもちろんである。The floating offshore wind power plant with a propulsion system and an attached hydrogen plant according to the present invention has been described in detail above based on the embodiments described above. However, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention, and will of course remain within the technical scope of the present invention.

図１において、支柱６を直径約２ｍ、肉厚約３０ｍｍ、長さ約１０ｍの鋼管で成形したと説明したが、支柱６を円筒形をした直径約２ｍ、筒の厚さ約２０ｃｍ、長さ約１０ｍの鉄筋コンクリート構造で形成することも、もちろん可能である。In Figure 1, it was explained that the support column 6 was formed from a steel pipe with a diameter of approximately 2 m, a wall thickness of approximately 30 mm, and a length of approximately 10 m. However, it is also possible to form the support column 6 from a cylindrical reinforced concrete structure with a diameter of approximately 2 m, a thickness of approximately 20 cm, and a length of approximately 10 m.

本発明の実施の形態１に係る、水素工場を併設した推進装置付き浮体式洋上風力発電所を斜視図で示す。A perspective view shows a floating offshore wind power plant with a propulsion system and an attached hydrogen plant, according to Embodiment 1 of the present invention. 同実施の形態に係る、図１で示した水素工場を併設した推進装置付き浮体式洋上風力発電所を正面図で示す。Figure 1 shows a front view of a floating offshore wind power plant with a propulsion system and an attached hydrogen plant, according to the same embodiment. 同実施の形態に係る、タワー部と支柱と浮力体部と推進装置を平面図と正面図で示す。The tower section, support column, buoyancy body section, and propulsion device according to the same embodiment are shown in a plan view and a front view. 同実施の形態に係る、支柱と浮力体部と推進装置を平面図と正面図で示す。The support column, buoyancy body, and propulsion device according to the same embodiment are shown in a plan view and a front view. 同実施の形態に係る、タワー部と支柱と浮力体部と推進装置を正面図で示す。The tower section, support column, buoyancy body section, and propulsion device according to the same embodiment are shown in a front view. 本発明の実施の形態２に係る、浮力体部の後端に推進装置を取り付けた状態を正面図で示す。The front view shows a state in which a propulsion device is attached to the rear end of the buoyancy body according to Embodiment 2 of the present invention.

Ａタワー部上部直径
Ｂタワー部上部スラブ厚さ
Ｃタワー部高さ
Ｄタワー底部スラブ厚さ
Ｅ支柱高さ
Ｆ建屋４階高さ
Ｇ建屋３階高さ
Ｈ建屋２階高さ
Ｉ建屋１階高さ
Ｊ浮力体部高さ
Ｋ前方傾斜部先端部高さ
Ｌ前方傾斜部最大幅
Ｍ前方傾斜部角度
Ｎ浮力体部直径
Ｐ後方傾斜部角度
Ｑ後方傾斜部最大幅
Ｒ後方傾斜部後端部高さ
Ｓタワー土台直径
１水素工場を併設した推進装置付き浮体式洋上風力発電所
２ブレード
３ナセル
４タワー部
５建屋
６支柱
７海面
８浮力体部
９海底
１０ハブ
１１鋼管
１２推進装置
１３スクリュープロペラ
１５３６０度旋回式ポッド推進装置
２９一点鎖線（Ａ）
３０一点鎖線（Ｂ）
３１前方傾斜部
３２後方傾斜部
３３頂上部
３４竪穴区画
３５建屋４階
３６建屋３階
３７建屋２階
３８建屋１階
３９タワー底部
４０タワー部土台
４１一点鎖線（Ｃ）
４５支柱（Ａ）
４６支柱（Ｂ）
４７支柱（Ｃ）
４８支柱（Ｄ）
４９支柱（Ｅ）
５０支柱（Ｆ）
５１支柱（Ｇ）
５２支柱（Ｈ）
５３水電解装置
５４水素液化装置
５５一点鎖線（Ｅ）
５６一点鎖線（Ｄ）
５７液体水素貯蔵タンク
５８海水淡水化装置
５９蓄電池設備
６０タワー部
６１頂上部
６２一点鎖線
６３竪穴区画
６４建屋
６５支柱
６６浮力体部
６７スクリュープロペラ
６８舵
６９推進装置
７０３６０度旋回式ポッド推進装置A Tower section upper diameter B Tower section upper slab thickness C Tower section height D Tower base slab thickness E Support column height F Building 4th floor height G Building 3rd floor height H Building 2nd floor height I Building 1st floor height J Buoyancy body section height K Forward inclined section tip height L Forward inclined section maximum width M Forward inclined section angle N Buoyancy body section diameter P Rearward inclined section angle Q Rearward inclined section maximum width R Rearward inclined section rear end height S Tower base diameter 1 Floating offshore wind power plant with propulsion system and attached hydrogen plant 2 Blades 3 Nacelle 4 Tower section 5 Building 6 Support column 7 Sea surface 8 Buoyancy body section 9 Seabed 10 Hub 11 Steel pipe 12 Propulsion system 13 Screw propeller 15 360-degree rotating pod propulsion system 29 Dash-dotted line (A)
30 One-dot chain line (B)
31 Forward sloping section 32 Rearward sloping section 33 Top section 34 Vertical shaft section 35 Building 4th floor 36 Building 3rd floor 37 Building 2nd floor 38 Building 1st floor 39 Tower base 40 Tower foundation 41 Dash-dot line (C)
45. Support post (A)
46 Pillar (B)
47 Pillar (C)
48 Pillar (D)
49 Pillar (E)
50 Pillar (F)
51 Pillar (G)
52 Pillar (H)
53 Water electrolysis apparatus 54 Hydrogen liquefaction apparatus 55 Dotted line (E)
56 One-dot chain line (D)
57 Liquid hydrogen storage tank 58 Seawater desalination plant 59 Battery storage equipment 60 Tower section 61 Top section 62 Dash-dot line 63 Vertical shaft section 64 Building 65 Support column 66 Buoyancy body section 67 Screw propeller 68 Rudder 69 Propulsion system 70 360-degree rotating pod propulsion system

Claims

In a floating offshore wind power plant, which consists of a tower supporting a nacelle containing multiple blades, a gearbox, and a generator,
The tower section (4) to be placed offshore is constructed of a conical reinforced concrete structure, with the top section (33) formed as a flat circle, the upper diameter (A) of the tower section is formed as a circle with a diameter of 5m, the upper slab thickness (B) of the tower section is 500mm, the height (C) of the tower section (4) from the top section (33) to the base (39) of the tower section is 97m, the thickness (D) of the tower base slab that constitutes the tower section base (40) of the tower section (4) is 1m, the diameter (S) of the tower base that constitutes the tower section base (40) is formed as a circle with a diameter of 25m, and a four-story building (5) with each floor having a height of 5m is constructed below the tower section (4).
The buoyancy body (8) to be placed in the water is cylindrical and constructed of reinforced concrete, with a diameter (N) of 100 m and a height (J) of 10 m excluding the forward and rearward inclined sections (31 and 32) of the buoyancy body (8). To ensure that the floating offshore wind power plant (1) with a propulsion system and a hydrogen plant built on land is stably floated on the water, the bottom of the buoyancy body (8) is formed with inclinations toward the front and rear ends at angles of 14 degrees, as indicated by the forward inclination angle (M) and the rearward inclination angle (P), respectively, on both the front and rear sides of the bottom. Multiple ballast water tanks are installed inside the buoyancy body (8). The buoyancy of the buoyancy body (8) is adjusted so that the position of the sea surface (7) is approximately in the vertical center of the support column (6) by injecting or discharging seawater into the ballast water tanks. The tilt of the floating offshore wind power plant (1) with a propulsion system and an attached hydrogen plant relative to the sea surface (7) is also maintained horizontally by injecting or discharging seawater into multiple ballast water tanks. Furthermore, the reinforced concrete of the buoyancy body (8), which is constructed with a hollow interior, is made of 200 mm thick reinforced concrete on the upper, lower, and outer surfaces. In addition, a hole with a diameter of 4 m is formed in the center of the upper part of the buoyancy body (8) to allow a vertical shaft compartment (34) to pass through.
To connect the tower section (4) and the buoyancy section (8), eight support columns (A) (45), (B) (46), (C) (47), (D) (48), (E) (49), (F) (50), (G) (51), and ( The support column (6) is mounted vertically so that the center of H) (52) is located there, and the upper parts of the eight support columns (A) (45), support columns (B) (46), support columns (C) (47), support columns (D) (48), support columns (E) (49), support columns (F) (50), support columns (G) (51), and support columns (H) (52) are attached to the lower surface of the tower base (40) where the center of the lower surface of the tower base (39) and the center of the buoyancy body (8) are aligned in a straight line,
A vertical shaft compartment (34) is formed in a cylindrical shape with a diameter of approximately 4 m, as shown by the dashed line (C) (41), extending from approximately the top (33) of the tower section (4) through the base (40) of the tower section to approximately the bottom of the central part of the buoyancy body section (8),
To ensure a stable power supply to the propulsion device (12) at all times, electricity generated by the generator inside the nacelle (3) is stored in a battery storage system (59) installed inside the buoyancy body (8), and then the propulsion device (12) is driven with that electricity. This allows the floating offshore wind power plant (1) with a propulsion device and attached hydrogen plant to remain in the same location offshore by utilizing the power from the battery storage system (59) even in windless conditions when the blades (2) do not rotate and the generator does not generate power. The propulsion device (12) rotates 360 degrees. A propulsion system (12) is configured such that two 360-degree rotating pod propulsion devices (15), capable of generating thrust almost uniformly in all directions, are mounted side-by-side at approximately the lower center of the buoyancy body (8), and the rotation speed and rotation angle of the two 360-degree rotating pod propulsion devices (15) are operated and driven separately, thereby allowing the floating offshore wind power plant ( 1) with a hydrogen plant to be rotated in the forward, backward, left, and right directions, and to be moored at the same location offshore.
A floating offshore wind power plant with a propulsion system and an attached hydrogen plant, characterized in that a seawater desalination plant (58), a water electrolysis plant (53), and a hydrogen liquefaction plant (54) are installed inside the building (5) of the tower section (4), and the seawater desalination plant (58) is operated using electricity generated by the wind power generation device to convert seawater into fresh water, the water electrolysis plant (53) generates hydrogen by electrolyzing fresh water, and the hydrogen liquefaction plant (54) is operated to liquefy the hydrogen produced by electrolysis, thereby producing liquid hydrogen from seawater, and the produced liquid hydrogen is passed through a vertical shaft compartment (34) and stored in a liquid hydrogen storage tank (57) in a cold box installed inside the buoyancy body section ( 8).