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JP2012112370A - Ship for installing offshore wind turbine and method for installing offshore wind turbine using the same - Google Patents

Ship for installing offshore wind turbine and method for installing offshore wind turbine using the same Download PDF

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Publication number
JP2012112370A
JP2012112370A JP2010274503A JP2010274503A JP2012112370A JP 2012112370 A JP2012112370 A JP 2012112370A JP 2010274503 A JP2010274503 A JP 2010274503A JP 2010274503 A JP2010274503 A JP 2010274503A JP 2012112370 A JP2012112370 A JP 2012112370A
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Prior art keywords
windmill
wind turbine
installation
ship
offshore
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JP2010274503A
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Japanese (ja)
Inventor
Takayuki Sawai
貴之 澤井
Hitoshi Kumamoto
均 熊本
Tomonori Watabe
友則 渡部
Shigetomo Fujita
重友 藤田
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
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Priority to JP2010274503A priority Critical patent/JP2012112370A/en
Priority to PCT/JP2011/050481 priority patent/WO2012060112A1/en
Publication of JP2012112370A publication Critical patent/JP2012112370A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/003—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting very large loads, e.g. offshore structure modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/185—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use erecting wind turbines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/52—Floating cranes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/027—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto steel structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/40—Arrangements or methods specially adapted for transporting wind motor components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B63B2001/128—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising underwater connectors between the hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2221/00—Methods and means for joining members or elements
    • B63B2221/20—Joining substantially rigid elements together by means that allow one or more degrees of freedom, e.g. hinges, articulations, pivots, universal joints, telescoping joints, elastic expansion joints, not otherwise provided for in this class
    • B63B2221/24—Joining substantially rigid elements together by means that allow one or more degrees of freedom, e.g. hinges, articulations, pivots, universal joints, telescoping joints, elastic expansion joints, not otherwise provided for in this class by means that allow one or more degrees of translational freedom, e.g. telescopic joints, not otherwise provided for in this class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2241/00—Design characteristics
    • B63B2241/02—Design characterised by particular shapes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0091—Offshore structures for wind turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • F05B2230/61—Assembly methods using auxiliary equipment for lifting or holding
    • F05B2230/6102—Assembly methods using auxiliary equipment for lifting or holding carried on a floating platform
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/95—Mounting on supporting structures or systems offshore
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/727—Offshore wind turbines
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Architecture (AREA)
  • Transportation (AREA)
  • Wind Motors (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a ship for installing an offshore wind turbine, capable of, when transporting a wind turbine in an assembled state and installing the wind turbine in an installation sea area, installing the wind turbine by simple work.SOLUTION: This ship 1 for installing the offshore wind turbine is configured in such a manner that the wind turbine 20 formed by assembling a wind turbine tower 22, a nacelle 24 and wind turbine blades 26 is loaded on a deck 2, the ship sails or is towed up to a wind turbine installation sea area, and the wind turbine 20 is lifted and installed in an offshore target installation position by a crane 6 provided on the deck 2, and has a ship body 3 having a plurality of outwardly protruding protrusions 5, and the crane 6 installs the wind turbine 20 with a recess side formed between the adjacent protrusions 5 as a target installation position.

Description

本発明は、洋上風車設置用船舶およびこれを用いた洋上風車設置方法に関するものである。   The present invention relates to an offshore windmill installation ship and an offshore windmill installation method using the same.

現在、欧州では、洋上風車建設が盛んに行われており、今後益々その規模が拡大し、洋上における設置工事量が大幅に増大する傾向にある。さらに、風車の設置海域も岸からより遠く、大水深海域での風車設置が計画されており、使用される風車自体も大型化の傾向にある。   At present, construction of offshore wind turbines is actively carried out in Europe, and the scale of the construction will increase further in the future, and the amount of installation work on the ocean tends to increase significantly. Furthermore, the windmill installation area is farther from the shore, and the installation of windmills in deep water is planned, and the windmills used are also becoming larger.

洋上風車の設置作業は、ジャッキアップ装置及びデッキクレーンを備えた自動昇降台船が用いられる。この自動昇降台船上に、分割または一部接合された風車翼、発電機・増速機を内包したナセル、タワーといった風車パーツや、洋上に風車を設置するために海底から築かれる基礎構造が積込まれる。そして、自動昇降台船を自航または曳航により風車設置海域まで運搬した後、ジャッキアップ装置のジャッキアップ脚を海底へ降ろして船体を海面上へ完全に持ち上げた状態で台船上のデッキクレーンを用いて風車の組立作業が行われる。   For the offshore wind turbine installation work, an automatic elevator platform equipped with a jack-up device and a deck crane is used. Wind turbine parts such as split or partially joined wind turbine blades, a nacelle containing a generator and gearbox, and a tower, and a basic structure built from the bottom of the ocean to install a wind turbine on the ocean are loaded on this automatic elevator platform ship. Is included. Then, after the automatic lifting platform ship was transported to the windmill installation sea area by self-navigation or towing, the jack crane on the carriage was used with the jack-up legs of the jack-up device lowered to the seabed and the hull completely lifted to the sea surface. The windmill is assembled.

既存の大半の風車設置用台船では、風車２〜３台分の風車パーツおよび基礎構造を一度に積載できるようになっている。風車パーツおよび基礎構造を集積港にて船積みした後、設置海域へ移動して積載した基数分の風車および基礎構造を設置した後、再び集積港へ戻り、風車の輸送・設置を繰り返している。   Most existing windmill installation boats can load two or three windmill parts and foundation structures at a time. After loading the windmill parts and the foundation structure at the accumulation port, they moved to the installation sea area, installed the number of windmills and the foundation structure loaded, and then returned to the accumulation port to repeat transportation and installation of the windmill.

また、風車の設置海域に自動昇降台船を風車設置作業専用として常駐させ、一方で別の自動昇降台船をパーツ輸送用として用いる場合もある。すなわち、集積港から複数の風車パーツ、基礎構造をパーツ輸送用台船に積載し、常駐している風車設置作業専用台船の隣へ停船し、ジャッキアップした後、設置作業専用台船のデッキクレーンでパーツ輸送用台船上に積載された風車パーツおよび基礎構造を吊り上げ、そのまま設置作業を行う。   In addition, there is a case where an automatic lifting platform ship is resident exclusively for windmill installation work in the sea area where the windmill is installed, while another automatic lifting platform ship is used for parts transportation. In other words, a plurality of windmill parts and foundation structures are loaded from the accumulation port onto the parts transport trolley, stopped next to the resident windmill dedicated trolley, jacked up, and then the deck for the dedicated trolley installation Lift the wind turbine parts and the foundation structure loaded on the parts transport trolley with a crane, and perform the installation work as it is.

しかし、上記のような現状の工法では設置工事時間および台船用船コストの観点で洋上での設置工事に莫大なコストが必要となることが見込まれ、その削減、改善が大きな課題となっている。
設置工事時間の問題は、風車の設置海域が岸から現状よりも更に遠くなることから集積港から設置海域までの回航時間が増大すること、設置海域の水深がこれまで以上に深まることで台船をジャッキアップ装置により昇降する時間が増大すること、また使用する風車の大型化により現状使用している機材で一度に輸送できる風車の台数が減ることにより時間的作業効率が下がることが挙げられる。
台船用船コストの問題は、工事量の増大により作業台船需要が増大すること、使用する風車の大型化に伴い台船のサイズ、ジャッキアップ装置やデッキクレーンの容量が大きくなることで台船の船価が増大することが挙げられる。 However, the current construction methods as described above are expected to require enormous costs for offshore installation work from the viewpoint of installation work time and cost of trolley vessels, and their reduction and improvement are major issues. .
The problem of the installation work time is that the windmill installation area is further away from the shore than the current situation, so the round trip time from the accumulation port to the installation sea area will increase, and the water depth of the installation sea area will deepen more than before. The time required to move up and down by the jack-up device is increased, and the time work efficiency is lowered by reducing the number of wind turbines that can be transported at once by the equipment currently used due to the increase in the size of the wind turbine to be used.
The problem of trolley ship costs is that the demand for work trolleys increases due to an increase in construction volume, and the size of trolleys and the capacity of jack-up devices and deck cranes increase with the increase in the size of wind turbines used. The ship price will increase.

一方、下記特許文献１には、風車の基礎を浮体とし、設置海域まで曳航し、浮体を海中に沈めて着座させることによって洋上風車を設置する方式が開示されている。このように、風車を組み立てた状態で設置海域まで運搬して設置するので、設置現場での組み立て作業が発生しないという利点がある。   On the other hand, Patent Document 1 below discloses a system in which an offshore wind turbine is installed by using the foundation of the wind turbine as a floating body, towing to the installation sea area, and sinking the floating body into the sea and sitting down. In this way, since the wind turbine is assembled and transported to the installation sea area, there is an advantage that assembly work at the installation site does not occur.

特開２００５−６９０２５号公報JP 2005-69025 A

しかし、特許文献１では、風車を設置する際に、クレーン船によって風車を支持して姿勢を保ちながら浮体を海中に沈める必要があり、困難な作業が伴う。また、曳航船に加えてクレーン船をも手配する必要があるので、コストの低減を図ることが難しい。   However, in patent document 1, when installing a windmill, it is necessary to sink a floating body in the sea, supporting a windmill with a crane ship and maintaining a posture, and a difficult operation | work is accompanied. Moreover, since it is necessary to arrange a crane ship in addition to the towing ship, it is difficult to reduce the cost.

本発明は、このような事情に鑑みてなされたものであって、組み立てられた状態の風車を運搬して設置海域にて設置する場合に、簡便な作業で風車を設置することができる洋上風車設置用船舶およびこれを用いた洋上風車設置方法を提供することを目的とする。   This invention is made | formed in view of such a situation, and when carrying the windmill of the assembled state and installing in an installation sea area, the offshore windmill which can install a windmill by simple operation | work An object of the present invention is to provide an installation ship and an offshore wind turbine installation method using the same.

上記課題を解決するために、本発明の洋上風車設置用船舶およびこれを用いた洋上風車設置方法は以下の手段を採用する。
すなわち、本発明にかかる洋上風車設置用船舶は、タワー、ナセル及び風車翼が組み立てられた風車、及び／又は、下端が海底に固定されるとともに上端に風車が固定される基礎をデッキ上に搭載し、風車設置海域まで自航または曳航し、前記デッキ上に設けられたクレーンによって前記風車または前記基礎を吊り上げて洋上の目標設置位置に設置する洋上風車設置用船舶であって、外方へ張り出す張出部を複数有した船型本体とされ、前記クレーンは、隣り合う前記張出部の間に形成された凹所側を前記目標設置位置として前記風車または前記基礎を設置することを特徴とする。 In order to solve the above problems, the offshore wind turbine installation ship of the present invention and the offshore wind turbine installation method using the same employ the following means.
That is, the offshore wind turbine installation ship according to the present invention is equipped with a tower on which a tower, a nacelle and a wind turbine blade are assembled, and / or a foundation on which a lower end is fixed to the sea floor and a wind turbine is fixed to the upper end on the deck. A vessel for offshore wind turbine installation that is self-navigated or towed to the wind turbine installation sea area, and that is installed at a target installation position offshore by lifting the wind turbine or the foundation with a crane provided on the deck. It is a ship-type main body having a plurality of projecting portions, and the crane is configured to install the windmill or the foundation with the recess side formed between the adjacent projecting portions as the target installation position. To do.

本発明の洋上風車設置用船舶は、タワー、ナセル及び風車翼が組み立てられた風車、及び／又は、基礎をそのまま風車設置海域まで運搬し設置するいわゆる風車一体設置を行う。したがって、風車の設置海域における組み立て作業を省略することができる。
そして、外方へ張り出す張出部を複数有する船型本体とし、これら張出部の間に形成された凹所側を目標設置位置として、風車または基礎をクレーンによって設置することとした。このように、目標設置位置が凹所側に設けられているので、クレーンによって風車または基礎を移動させる距離を短くすることができ、クレーンによる設置作業の短縮化を図ることができる。 The ship for installing an offshore wind turbine according to the present invention performs a so-called wind turbine integrated installation in which a tower, a nacelle and a wind turbine blade are assembled and / or a foundation is transported and installed as it is to a wind turbine installation sea area. Therefore, the assembly work in the sea area where the windmill is installed can be omitted.
And it was set as the ship type main body which has two or more overhang | projection parts projected outward, and decided to install a windmill or a foundation with a crane by setting the recess side formed between these overhang parts as a target installation position. Thus, since the target installation position is provided on the recess side, the distance for moving the windmill or the foundation by the crane can be shortened, and the installation work by the crane can be shortened.

さらに、本発明の洋上風車設置用船舶では、前記目標設置位置は、前記クレーンのリーチ範囲内となる前記凹所内に設けられていることを特徴とする。   Furthermore, in the offshore wind turbine installation ship of the present invention, the target installation position is provided in the recess that is within the reach range of the crane.

目標設置位置をクレーンのリーチ範囲内となる凹所内に設けることとしたので、クレーンのアウトリーチをさらに短縮することができ、作業性が向上する。   Since the target installation position is provided in the recess that is within the reach range of the crane, the outreach of the crane can be further shortened and the workability is improved.

さらに、本発明の洋上風車設置用船舶では、複数台の前記風車及び／又は複数台の前記基礎の前記デッキ上における搭載位置は、前記クレーンを中心として取り囲むように設けられていることを特徴とする。   Further, in the offshore wind turbine installation ship of the present invention, the mounting positions on the deck of the plurality of wind turbines and / or the plurality of foundations are provided so as to surround the crane. To do.

複数台の風車及び/又は複数台の基礎をデッキ上に搭載する際に、クレーンを中心として取り囲むように搭載することとしたので、クレーンリーチ内に複数台の風車及び/又は基礎が搭載されることとなり、作業性が向上する。   When multiple wind turbines and / or multiple foundations are mounted on the deck, they are mounted so as to surround the crane, so multiple wind turbines and / or foundations are mounted in the crane reach. As a result, workability is improved.

さらに、本発明の洋上風車設置用船舶では、前記風車及び／又は前記基礎の前記デッキ上における搭載位置は、前記クレーンと前記凹所の間に設けられていることを特徴とする。   Further, in the offshore windmill installation ship of the present invention, the mounting position of the windmill and / or the foundation on the deck is provided between the crane and the recess.

風車や基礎のデッキ上における搭載位置を、クレーンと凹所の間とすることにより、風車や基礎を目標設置位置に近い位置で搭載することができる。これにより、クレーンによる風車または基礎の移動距離を短くできるので、クレーンによる設置作業の短縮化を更に図ることができる。   By setting the mounting position on the deck of the windmill and the foundation between the crane and the recess, the windmill and the foundation can be mounted at a position close to the target installation position. Thereby, since the moving distance of the windmill or foundation by a crane can be shortened, the shortening of the installation work by a crane can further be aimed at.

さらに、本発明の洋上風車設置用船舶では、各前記張出部には、前記船型本体を海底から持ち上げて支持するジャッキアップ装置が設けられていることを特徴とする。   Furthermore, in the offshore wind turbine installation ship according to the present invention, each overhang is provided with a jack-up device that lifts and supports the boat body from the seabed.

各張出部にジャッキアップ装置を設けることとした。これにより、風車または基礎の設置作業時に、船舶を安定的に位置決めすることができるので、作業効率が向上する。   A jack-up device was provided at each overhang. Thereby, since a ship can be positioned stably at the time of installation work of a windmill or a foundation, work efficiency improves.

さらに、本発明の洋上風車設置用船舶では、船型本体の下方には、複数のコラムを介してロワーハルが設けられていることを特徴とする。   Further, the offshore wind turbine installation ship of the present invention is characterized in that a lower hull is provided below the hull main body through a plurality of columns.

船型本体の下方に複数のコラムを介してロワーハルを設けることとした。ロワーハルは所定の浮力を与えるだけの大きさで水中に位置し、バラストの出し入れによって重心を下げ所定の復原力を与える。すなわち、セミサブ（半没水）型の船舶とされている。また、ロワーハルはコラムによって船型本体から離間された状態で船型本体の下方に設けられているのでバラスト張水などにより重心を下げ、コラムは所定の復原力が得られる程度に展開されかつ直径を細くすることで、波浪による船体の動揺を小さく抑えかつ所定の復原性を得ることができる。
なお、風車の設置時には、DPS（Dynamic Positioning System）によって船体の位置および姿勢を固定することが好ましい。このようにすれば、船舶を固定するためのジャッキアップおよびジャッキダウンの工程が不要となるので、より作業時間を短縮することができる。 A lower hull is provided below the hull form body via a plurality of columns. The lower hull is located in the water at a size sufficient to give a predetermined buoyancy, and lowers the center of gravity by giving or removing ballast to give a predetermined restoring force. In other words, it is a semi-sub (semi-submersible) type ship. In addition, the lower hull is provided below the hull main body while being separated from the hull main body by the column. Therefore, the center of gravity is lowered by ballast water, etc., and the column is expanded to a predetermined restoring force and the diameter is reduced. By doing so, it is possible to suppress the fluctuation of the hull caused by waves and to obtain a predetermined stability.
When installing the windmill, it is preferable to fix the position and posture of the hull by DPS (Dynamic Positioning System). In this way, the jack-up and jack-down steps for fixing the ship are not necessary, and the working time can be further shortened.

さらに、本発明の洋上風車設置用船舶では、前記船型本体は、平面視した場合に、略正方形の四隅から外方に前記張出部が張り出した形状とされ、前後左右方向に対称とされた形状とされていることを特徴とする。   Furthermore, in the offshore wind turbine installation ship according to the present invention, the hull main body has a shape in which the projecting portions project outward from substantially four corners of the square when viewed in plan, and is symmetrical in the front-rear and left-right directions. It is characterized by being shaped.

船型本体を、正方形を基本とした前後左右対称形状とし、その四隅から張出部が張り出す形状とした。これにより、隣り合う張出部の間の４つの側面に面する４カ所に風車または基礎の搭載位置を設定することができ、４台を同時に運搬して設置することができる。   The ship's main body was made into a shape that was symmetrical in the front-rear and left-right directions based on a square, and had a projecting portion projecting from its four corners. Thereby, the mounting position of a windmill or a foundation can be set to four places which face four side surfaces between adjacent overhang | projection parts, and four units can be conveyed and installed simultaneously.

さらに、本発明の洋上風車設置用船舶では、前記凹所が形成された位置とは別の位置に、流体抵抗を低減する壁部が隣り合う前記張出部の間に亘って設けられていることを特徴とする。   Furthermore, in the offshore wind turbine installation ship of the present invention, a wall portion for reducing fluid resistance is provided between the adjacent projecting portions at a position different from the position where the recess is formed. It is characterized by that.

流体抵抗を低減する壁部が隣り合う張出部の間に亘って設けられているので、自航または曳航するときの流体抵抗を低減することができる。このような壁部としては、張出部間を直線状に結んだ壁部としても良いし、あるいは、張出部間に突出部を有する船首形状とした壁部としても良い。   Since the wall part which reduces fluid resistance is provided between the adjacent overhang | projection parts, the fluid resistance at the time of self-navigation or towing can be reduced. As such a wall part, it is good also as a wall part which connected between the overhang | projection parts linearly, or good also as the wall part made into the bow shape which has a protrusion part between overhang | projection parts.

また、本発明の洋上風車設置方法では、タワー、ナセル及び風車翼が組み立てられた風車、及び／又は、下端が海底に固定されるとともに上端に風車が固定される基礎をデッキ上に搭載し、風車設置海域まで自航または曳航し、前記デッキ上に設けられたクレーンによって前記風車または前記基礎を吊り上げて洋上の目標設置位置に設置する洋上風車設置用船舶を用いた洋上風車設置方法であって、前記洋上設置用船舶は、外方へ張り出す張出部を複数有した船型本体とされ、前記クレーンは、隣り合う前記張出部の間に形成された凹所側を前記目標設置位置として前記風車または前記基礎を設置することを特徴とする。   Further, in the offshore wind turbine installation method of the present invention, the wind turbine in which the tower, the nacelle and the wind turbine blade are assembled, and / or the foundation on which the lower end is fixed to the sea floor and the wind turbine is fixed to the upper end are mounted on the deck, An offshore windmill installation method using an offshore windmill installation ship that self-tows or tows to a windmill installation sea area and lifts the windmill or the foundation by a crane provided on the deck and installs it at a target installation position on the ocean. The offshore installation ship has a boat body having a plurality of overhanging portions that project outward, and the crane has a recess formed between adjacent overhanging portions as the target installation position. The windmill or the foundation is installed.

本発明の洋上風車設置方法は、タワー、ナセル及び風車翼が組み立てられた風車、及び／又は、基礎をそのまま風車設置海域まで運搬し設置するいわゆる風車一体設置を行う。したがって、風車の設置海域における組み立て作業を省略することができる。
そして、外方へ張り出す張出部を複数有する船型本体とし、これら張出部の間に形成された凹所を目標設置位置として、風車または基礎をクレーンによって設置することとした。このように、目標設置位置が凹所側に設けられているので、クレーンによって風車または基礎を移動させる距離を短くすることができ、クレーンによる設置作業の短縮化を図ることができる。 The offshore wind turbine installation method of the present invention performs so-called wind turbine integrated installation in which a tower, a nacelle, and wind turbine blades are assembled and / or a foundation is transported and installed as it is to a wind turbine installation sea area. Therefore, the assembly work in the sea area where the windmill is installed can be omitted.
And it was set as the ship body which has two or more overhang | projection parts projected outward, and decided to install a windmill or a foundation with a crane by setting the recess formed between these overhang | projection parts as a target installation position. Thus, since the target installation position is provided on the recess side, the distance for moving the windmill or the foundation by the crane can be shortened, and the installation work by the crane can be shortened.

さらに、本発明の洋上風車設置方法は、前記風車を正面視した場合の各前記風車翼の角度位置が、隣り合う前記風車の前記風車翼の角度位置と異なるように各前記風車翼を固定して複数台の前記風車を前記デッキ上に搭載することを特徴とする。   Further, the offshore wind turbine installation method of the present invention fixes each wind turbine blade so that the angular position of each wind turbine blade when the wind turbine is viewed from the front is different from the angular position of the wind turbine blade of the adjacent wind turbine. And mounting a plurality of wind turbines on the deck.

風車を正面視した場合の風車翼の角度（アジマス角）位置を、隣り合う風車ごとに異なるようにした。これにより、隣り合う風車間で風車翼が接触しないようにすることができる。
例えば、３枚の風車翼を備えた風車の場合、正面視してＹ形状に各風車翼を位置させた角度位置を基準位置とし、隣り合う風車の風車翼は基準位置から５〜１０°程度ずらされた角度位置とされる。このように角度位置をずらすことで、例えばクレーンを取り囲むように３台の風車を搭載する場合に効果的である。 The angle (azimuth angle) position of the windmill blade when the windmill is viewed from the front is made different for each adjacent windmill. Thereby, a windmill blade can be prevented from contacting between adjacent windmills.
For example, in the case of a wind turbine having three wind turbine blades, an angular position where each wind turbine blade is positioned in a Y shape when viewed from the front is used as a reference position, and the wind turbine blades of adjacent wind turbine blades are about 5 to 10 ° from the reference position. The shifted angular position. By shifting the angular position in this manner, for example, it is effective when three wind turbines are mounted so as to surround the crane.

外方へ張り出す張出部を複数有する船型本体とし、これら張出部の間に形成された凹所側を目標設置位置として、風車または基礎をクレーンによって設置することとしたので、クレーンによって風車または基礎を移動させる距離を短くすることができ、クレーンによる設置作業の短縮化を図ることができる。これにより、工事期間の短縮かおよび工事費用の低減が実現される。   Since the ship body has a plurality of projecting parts that project outward, the windmill or foundation is installed with a crane with the recess side formed between these projecting parts as the target installation position. Or the distance which moves a foundation can be shortened and shortening of the installation work by a crane can be aimed at. As a result, the construction period can be shortened and the construction cost can be reduced.

本発明の第１実施形態にかかる洋上風車設置用船舶であり、風車を搭載した場合を示した斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a case where an offshore windmill installation ship according to a first embodiment of the present invention is mounted with a windmill. 風車搭載位置と風車設置位置の関係を概略的に示した平面図である。It is the top view which showed roughly the relationship between a windmill mounting position and a windmill installation position. 図１の洋上風車設置用船舶が基礎構造物を搭載した場合を示した斜視図である。It is the perspective view which showed the case where the ship for offshore windmill installation of FIG. 1 mounted a foundation structure. 本発明の第２実施形態にかかる洋上風車設置用船舶であり、風車を搭載した場合を示した斜視図である。It is the ship for an offshore windmill installation concerning 2nd Embodiment of this invention, and is the perspective view which showed the case where a windmill is mounted. 図４の洋上風車設置用船舶を斜め下方から見た斜視図である。It is the perspective view which looked at the ship for offshore windmill installation of FIG. 4 from diagonally downward. 風車の設置手順の変形例を示した平面図である。It is the top view which showed the modification of the installation procedure of a windmill. 船型本体の形状の変形例を示した平面図である。It is the top view which showed the modification of the shape of a hull form main body.

以下に、本発明にかかる実施形態について、図面を参照して説明する。
［第１実施形態］
以下、本発明の第１実施形態について、図１〜図３を用いて説明する。
図１には、４台の風車を搭載した洋上風車設置用船舶１（以下、単に「船舶１」という。）が示されている。
船舶１は、上面にデッキ２を有する船型本体３と、デッキ２の略中央に立設された主タワー４と、この主タワー４の上端に設置されたクレーン６とを備えている。 Embodiments according to the present invention will be described below with reference to the drawings.
[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 shows an offshore windmill installation ship 1 (hereinafter simply referred to as “ship 1”) equipped with four windmills.
The ship 1 includes a hull main body 3 having a deck 2 on the upper surface, a main tower 4 erected substantially at the center of the deck 2, and a crane 6 installed at the upper end of the main tower 4.

船舶１の船型本体３は、図２のように平面視した場合に、略正方形とされた四隅から外方に張り出した張出部５が設けられている。すなわち、船型本体３は、正方形に対して、その対角線上に延在するＸ形状（十文字形状）が重ね合わされた外形状となっており、前後左右対称な形状とされている。各張出部５の間には、船型本体３の中央側（クレーン６側）に凹むように船型本体３の外形状を形成する側面縁部１３が設けられており、これにより、隣り合う張出部５間には凹所１１が形成されている。
各張出部５には、図１に示すように、ジャッキアップ装置７が設けられており、張出部５を上下方向に貫通するジャッキアップ脚９が上下動させられるようになっている。風車を設置する作業時には、ジャッキアップ脚９の下端が海底に着床し、船舶１全体を持ち上げて足場を固定するようになっている。 The ship body 3 of the ship 1 is provided with overhang portions 5 that project outward from four corners that are substantially square when viewed in plan as shown in FIG. That is, the hull main body 3 has an outer shape in which an X shape (a cross shape) extending on a diagonal line is superimposed on a square, and has a symmetrical shape in the front-rear and left-right directions. Between each overhang part 5, the side edge part 13 which forms the outer shape of the hull body 3 so that it may be dented in the center side (crane 6 side) of the hull body 3 is provided, and, thereby, adjacent tension | tensile_strength is provided. A recess 11 is formed between the protruding portions 5.
As shown in FIG. 1, each overhanging portion 5 is provided with a jackup device 7 so that a jackup leg 9 penetrating the overhanging portion 5 in the vertical direction can be moved up and down. During the work of installing the windmill, the lower end of the jack-up leg 9 is landed on the seabed, and the entire ship 1 is lifted to fix the scaffold.

デッキ２上には、複数台（本実施形態では４台）の風車２０が搭載されるようになっている。風車２０は、風車タワー２２と、増速機や発電機が収容されるナセル２４と、風力を受けて回転する風車翼２６とを備えている。これら風車タワー２２、ナセル２４及び風車翼２６は、洋上輸送前の陸上にて予め組み立てられた上でデッキ２上に搭載されている。搭載時には、隣り合う風車２０の風車翼２６同士が干渉しないように、所定のアジマス角にて風車翼２６が固定されている。具体的には、図１のように４台の風車２０を搭載する場合には、同図において左側に位置した風車２０のように、３枚とされた風車翼２６が正面視してＹ形状となるようにアジマス角を設定して各風車翼２６を固定し、これと隣り合う同図において右側に位置した風車２０についてはＹ形状を上下反転させた逆Ｙ形状となるように各風車翼２６を固定する。すなわち、クレーン６を挟んで一対の風車２０はＹ形状となるように各風車翼２６が固定され、他対の風車２０は逆Ｙ形状となるように各風車翼２６が固定される。
なお、クレーン６を取り囲むように３台の風車２０を設置する場合には、図１で示したようにＹ形状と逆Ｙ形状の組合せとする必要は無く、一の風車翼２６をＹ形状に設定した場合には、隣り合う他の風車２０の風車翼２６はＹ形状から所定角度（例えば５〜１０°）ずらした角度位置にて固定するようにすればよい。 A plurality of wind turbines 20 (four in this embodiment) are mounted on the deck 2. The windmill 20 includes a windmill tower 22, a nacelle 24 in which a speed increaser and a generator are accommodated, and a windmill blade 26 that rotates by receiving wind power. The windmill tower 22, the nacelle 24, and the windmill blades 26 are mounted on the deck 2 after being assembled in advance on land before offshore transportation. At the time of mounting, the wind turbine blades 26 are fixed at a predetermined azimuth angle so that the wind turbine blades 26 of the adjacent wind turbines 20 do not interfere with each other. Specifically, when four wind turbines 20 are mounted as shown in FIG. 1, the three wind turbine blades 26 are Y-shaped when viewed from the front, as in the wind turbine 20 located on the left side in FIG. The wind turbine blades 26 are fixed by setting the azimuth angle so that the wind turbine blades 26 are positioned on the right side in the drawing adjacent to the wind turbine blades 26 so that the wind turbine blades 20 have inverted Y shapes that are vertically inverted from the Y shape. 26 is fixed. That is, the wind turbine blades 26 are fixed so that the pair of wind turbines 20 has a Y shape with the crane 6 interposed therebetween, and the wind turbine blades 26 are fixed so that the other pair of wind turbines 20 have an inverted Y shape.
In addition, when installing the three windmills 20 so that the crane 6 may be surrounded, it is not necessary to set it as the combination of Y shape and reverse Y shape as shown in FIG. 1, and the one windmill blade 26 is made into Y shape. When set, the wind turbine blades 26 of other adjacent wind turbines 20 may be fixed at an angular position shifted from the Y shape by a predetermined angle (for example, 5 to 10 °).

図２には、各風車２０のデッキ２上における搭載位置が示されている。同図に示すように、各風車２０は、クレーン６を中心として取り囲むように設けられ、クレーン６を支持する主タワー４と凹所１１との間、具体的には、側面縁部１３が主タワー４側に最も近づいた位置（隣り合う張出部５間の略中央位置）の近傍に設けられている。本実施形態では、デッキ２が前後左右対称形状となっているので、主タワー４の周囲の４カ所に風車の搭載位置が設けられている。   FIG. 2 shows the mounting positions of the wind turbines 20 on the deck 2. As shown in the figure, each wind turbine 20 is provided so as to surround the crane 6 as a center, and between the main tower 4 supporting the crane 6 and the recess 11, specifically, the side edge 13 is the main edge. It is provided in the vicinity of the position closest to the tower 4 side (substantially central position between the adjacent overhang portions 5). In the present embodiment, since the deck 2 has a symmetrical shape in the front-rear direction and the left-right direction, wind turbine mounting positions are provided at four locations around the main tower 4.

図１に示すように、クレーン６は、デッキ２上に搭載された風車２０を吊り上げて、風車２０の目標設置位置となる基礎３０上まで風車２０を搬送できるようになっている。クレーン６は、ブーム６ａと、フックを備えた吊り具６ｂと、吊り具６ｂからブーム６ａ先端を通過して巻上ドラム（図示せず）へと導かれる巻上ワイヤ６ｃとを備えている。クレーン６は、ブーム６ａを起伏させることによって吊り具６ｂをクレーン６中心から半径方向に接近離間させることができるようになっており、また巻上ワイヤ６ｃを巻上ドラムで巻上げまたは繰り出すことによって、吊り具６ｂを上下させることができ、また、クレーン６を中心軸線回りに回転させることによって吊り具６ｂを旋回させることができる。
クレーン６が風車２０を吊り上げる際には、風車２０下端および中間位置に掛け回された吊りワイヤ３６を吊り具６ｂのフックに引っ掛けた状態で吊り上げるようになっている。 As shown in FIG. 1, the crane 6 can lift the windmill 20 mounted on the deck 2 and transport the windmill 20 onto the foundation 30 that is the target installation position of the windmill 20. The crane 6 includes a boom 6a, a lifting tool 6b having a hook, and a hoisting wire 6c that passes from the hoisting tool 6b to the hoisting drum (not shown) through the tip of the boom 6a. The crane 6 can lift and lower the boom 6a so that the lifting tool 6b can be moved away from the center of the crane 6 in the radial direction, and the hoisting wire 6c is wound or unwound by a hoisting drum. The hanger 6b can be moved up and down, and the hanger 6b can be turned by rotating the crane 6 around the central axis.
When the crane 6 lifts the windmill 20, the suspension wire 36 is hung on the hook of the suspension 6 b while being suspended from the lower end of the windmill 20 and the intermediate position.

風車２０の目標設置位置となる基礎３０は、図２に示すように、クレーン６から見て凹所１１側に設けられている。すなわち、張出部５間に目標設置位置を挟み込むような状態で船舶１の位置が固定され、風車２０の設置作業が行われる。
基礎３０は、海底に設置されて風車タワー２２の下端を固定するものであり、例えば図１に示すように、金属材料で構成された骨組み構造とされている。
風車タワー２２の両側方には、風車ガイド３２が立設され、風車２０の転倒を防止している。 As shown in FIG. 2, the foundation 30 serving as the target installation position of the windmill 20 is provided on the recess 11 side when viewed from the crane 6. That is, the position of the ship 1 is fixed in a state in which the target installation position is sandwiched between the overhang portions 5, and the installation work of the windmill 20 is performed.
The foundation 30 is installed on the seabed and fixes the lower end of the wind turbine tower 22. For example, as shown in FIG. 1, the foundation 30 has a framework structure made of a metal material.
A windmill guide 32 is erected on both sides of the windmill tower 22 to prevent the windmill 20 from falling.

主タワー４の中間位置には、操舵装置を備えた船橋４０が設けられている。この船橋４０の下方位置には、船員等の居住区域が設けられている。   A bridge 40 having a steering device is provided at an intermediate position of the main tower 4. A living area for sailors and the like is provided below the bridge 40.

また、船舶１は、基礎３０を輸送する際にも利用することができ、図３に示すように、基礎３０を風車２０と同様に搭載できる。なお、基礎３０の大きさによっては、図３に示すように、基礎３０の下端を設置するための延長部１４を張出部５間に設けることが好ましい。   The ship 1 can also be used when the foundation 30 is transported, and the foundation 30 can be mounted in the same manner as the windmill 20 as shown in FIG. Depending on the size of the foundation 30, as shown in FIG. 3, an extension part 14 for installing the lower end of the foundation 30 is preferably provided between the overhanging parts 5.

次に、上記構成の船舶１を用いた風車２０の洋上における設置方法について説明する。
風車２０は、洋上輸送前の陸上にて、風車タワー２０、ナセル２４及び風車翼２６が予め組み立てられる。そして、陸側のクレーンまたは船舶１のクレーン６によって、船舶１のデッキ２上に搭載される。搭載される位置は、図２に示したように、側面縁部１３が主タワー４側に最も近づいた位置の近傍である。本実施形態では、４台の風車２０が同時に搭載される。
風車２０を搭載した後、各風車２０の風車翼２６が干渉しないように風車翼２６のアジマス角を固定する。
その後、図示しない曳航船によって船舶１は風車設置海域まで曳航される。なお、船舶１に推進装置を設け、自航するようにしてもよい。
風車設置海域に到達すると、予め設置されている基礎３０に接近し、図２に示すように、基礎３０がクレーン６から見て凹所１１側に位置するように、より具体的にはクレーン６のリーチ範囲内となる凹所１１内に位置するように、隣り合う張出部５間に基礎３０を挟み込む位置で停船する。この状態で、設置する予定の風車２０に対向するように、目標設置位置が位置されることになる。
停船後、ジャッキアップ装置７によってジャッキアップ脚９を海底に降ろし、ジャッキアップ脚９の下端を海底に着床させた後に、船舶１全体を持ち上げる。これにより、風車設置作業のための足場を固定する。
そして、クレーン６によって、図２の矢印Ａで示すように、風車２０を、その搭載位置から基礎３０上へと移動させる。このように、風車２０の目標設置位置である基礎３０がクレーン６から見て凹所１１側に位置させているので、クレーン６によって風車２０を吊り上げた後の移動距離を短くすることができ、クレーン６で吊った後に少し外側へブーム６ａを振り出すだけで目標設置位置へと風車２０を搬送することができるので、極めて簡便かつ短時間で設置作業を行うことができる。
風車２０を基礎３０上へと搬送した後は、所定の固定作業等が行われ、風車２０が基礎３０上に確実に固定される。 Next, a method for installing the windmill 20 on the ocean using the ship 1 having the above configuration will be described.
In the windmill 20, the windmill tower 20, the nacelle 24, and the windmill blades 26 are assembled in advance on land before offshore transportation. And it is mounted on the deck 2 of the ship 1 by the crane on the land side or the crane 6 of the ship 1. As shown in FIG. 2, the mounting position is in the vicinity of the position where the side edge 13 is closest to the main tower 4 side. In the present embodiment, four wind turbines 20 are mounted simultaneously.
After the windmills 20 are mounted, the azimuth angle of the windmill blades 26 is fixed so that the windmill blades 26 of the windmills 20 do not interfere with each other.
Thereafter, the ship 1 is towed to a windmill-installed sea area by a towing ship (not shown). In addition, a propulsion device may be provided in the ship 1 so as to be self-propelled.
When it reaches the windmill installation sea area, it approaches the pre-installed foundation 30 and, more specifically, as shown in FIG. The ship is stopped at a position where the foundation 30 is sandwiched between the adjacent overhang portions 5 so as to be located in the recess 11 within the reach range. In this state, the target installation position is positioned so as to face the windmill 20 to be installed.
After stopping the boat, the jack-up device 9 lowers the jack-up leg 9 to the seabed, and lowers the lower end of the jack-up leg 9 on the seabed. Thereby, the scaffold for windmill installation work is fixed.
Then, as shown by the arrow A in FIG. 2, the wind turbine 20 is moved from the mounting position onto the foundation 30 by the crane 6. Thus, since the foundation 30 which is the target installation position of the windmill 20 is located on the recess 11 side when viewed from the crane 6, the travel distance after the windmill 20 is lifted by the crane 6 can be shortened. Since the windmill 20 can be transported to the target installation position by swinging the boom 6a slightly outward after being suspended by the crane 6, the installation operation can be performed extremely simply and in a short time.
After transporting the windmill 20 onto the foundation 30, a predetermined fixing operation or the like is performed, and the windmill 20 is securely fixed onto the foundation 30.

次の風車２０を設置する際には、ジャッキアップ装置７によってジャッキアップ脚９を海底から引き上げ（ジャッキダウン）、次の目標設置位置まで船舶１を移動させる。そして、上述したのと同様に、設置する予定の風車２０に対向するように、次の目標設置位置に位置する基礎３０に対向させて停船させ、ジャッキアップを行い、設置作業を行う。
この作業工程を順次繰り返して、船舶１に搭載された４台の風車の設置作業が行われる。 When the next windmill 20 is installed, the jackup leg 9 is pulled up from the seabed (jackdown) by the jackup device 7, and the ship 1 is moved to the next target installation position. Then, in the same manner as described above, the ship is stopped facing the foundation 30 located at the next target installation position so as to face the windmill 20 to be installed, jack-up is performed, and installation work is performed.
This work process is sequentially repeated, and the installation work of four wind turbines mounted on the ship 1 is performed.

なお、図３に示した基礎３０を搭載した船舶１の設置作業についても、上述した風車の場合と同様に、目標位置まで移動し、ジャッキアップした後に、設置作業が行われる。   In addition, also about the installation operation | work of the ship 1 carrying the foundation 30 shown in FIG. 3, after moving to a target position and jacking up similarly to the case of the windmill mentioned above, installation operation is performed.

以上の通り、本実施形態によれば、以下の作用効果を奏する。
船舶１は、風車タワー２２、ナセル２４及び風車翼２６が組み立てられた風車２０、及び／又は、基礎３０をそのまま風車設置海域まで運搬し設置するいわゆる風車一体設置を行うので、設置海域における組み立て作業を省略することができる。
そして、外方へ張り出す張出部５を複数有する船型本体３とし、これら張出部５の間に形成された凹所１１側（より具体的にはクレーン６のリーチ範囲内となる凹所１１内）を目標設置位置として、風車２０または基礎３０をクレーン６によって設置することとしたので、クレーン６によって風車２０または基礎３０を移動させる距離を短くすることができ、クレーン６による設置作業の短縮化を図ることができる。
また、船型本体３を前後左右対称形状として、４つの側面に面する４カ所に風車２０または基礎３０の搭載位置を設定して、４台を同時に運搬して設置することとした。これにより、多くの風車を一度に運搬して設置することができるので、風車の設置コストを下げることができる。 As described above, according to the present embodiment, the following operational effects are obtained.
Since the ship 1 performs so-called windmill integrated installation in which the windmill 20 in which the windmill tower 22, the nacelle 24, and the windmill blades 26 are assembled and / or the foundation 30 is directly transported to the windmill installation sea area and installed, the assembly work in the installation sea area is performed. Can be omitted.
And it is set as the hull main body 3 which has the some overhang | projection part 5 projected outside, and the recess 11 side (more specifically, the recess in the reach range of the crane 6) formed between these overhang parts 5 11) is set as the target installation position, and the windmill 20 or the foundation 30 is installed by the crane 6. Therefore, the distance to which the windmill 20 or the foundation 30 is moved by the crane 6 can be shortened. Shortening can be achieved.
In addition, the ship body 3 is symmetrically shaped in the front-rear and left-right directions, and the mounting positions of the windmill 20 or the foundation 30 are set at four locations facing the four side surfaces, and the four units are transported and installed simultaneously. Thereby, since many windmills can be conveyed and installed at a time, the installation cost of a windmill can be reduced.

［第２実施形態］
次に、本発明の第２実施形態について、図４及び図５を用いて説明する。
第１実施形態に示した船舶１は、ジャッキアップ装置７を備えたいわゆるジャッキアップ船であるが、本実施形態の船舶１Ｂは、セミサブ（半没水）型とされている点が相違する。それ以外の構成は、第１実施形態と同様なので、共通する構成については同一符号を付しその説明を省略する。 [Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS.
Although the ship 1 shown in 1st Embodiment is what is called a jack-up ship provided with the jack-up apparatus 7, the points from which the ship 1B of this embodiment is made into a semi sub (semi-submersible) type | mold differ. Since the other configuration is the same as that of the first embodiment, the common components are denoted by the same reference numerals and the description thereof is omitted.

船舶１Ｂは、船型本体３の下面から下方に向かって伸びる複数のコラム５２を備えており、各コラム５２の下端にロワーハル５４が固定されている。ロワーハル５４は、船型本体３の対角線方向に延在するＸ形状（十文字形状）に倣って、略直交する２つの円筒体によって形成されたＸ形状（十文字形状）となっている。ロワーハル５４は所定の浮力を与えるだけの大きさで水中に位置し、ロワーハル５４内に海水等のバラストの出し入れによって重心を下げ所定の復原力を与える。このバラストの調整によって、喫水は、おおよそコラム５２の中間位置に保たれる。
本実施形態では、ロワーハル５４がコラム５２によって船型本体３から離間された状態で船型本体３の下方に設けられているので、バラスト張水などにより重心を下げ、しかもコラム５２は所定の復原力が得られる程度に展開されかつ直径を細くすることで、波浪による船体の動揺を小さく抑えかつ所定の復原性を得ることができるようになっている。
船型本体３の下面には、複数のプロペラ推進装置５８が設けられている。風車２０および基礎３０の設置作業時には、これらプロペラ推進装置５８を制御するDPS（Dynamic Positioning System）によって、船体の位置および姿勢を固定することができるようになっている。すなわち、本実施形態の船舶１Ｂは、第１実施形態のようにジャッキアップおよびジャッキダウンを行わずに船体の位置および姿勢を固定することができるので、作業時間を更に短縮することができる。
なお、風車２０及び基礎３０を洋上の設置海域へと輸送し設置する工程は、上述した第１実施形態と同様なのでその説明を省略する。 The ship 1 </ b> B includes a plurality of columns 52 extending downward from the lower surface of the hull main body 3, and a lower hull 54 is fixed to the lower end of each column 52. The lower hull 54 has an X shape (cross character shape) formed by two substantially orthogonal cylinders following the X shape (cross character shape) extending in the diagonal direction of the hull main body 3. The lower hull 54 is located in the water so as to give a predetermined buoyancy, and lowers the center of gravity by putting in and out ballast such as seawater into the lower hull 54 to give a predetermined restoring force. By adjusting this ballast, the draft is maintained at approximately the middle position of the column 52.
In this embodiment, since the lower hull 54 is provided below the hull main body 3 while being separated from the hull main body 3 by the column 52, the center of gravity is lowered by ballast water or the like, and the column 52 has a predetermined restoring force. By deploying it to the extent that it can be obtained and reducing its diameter, it is possible to suppress the fluctuation of the hull due to waves and to obtain a predetermined stability.
A plurality of propeller propulsion devices 58 are provided on the lower surface of the hull main body 3. During the installation work of the windmill 20 and the foundation 30, the position and attitude of the hull can be fixed by a DPS (Dynamic Positioning System) that controls the propeller propulsion device 58. That is, since the ship 1B of this embodiment can fix the position and posture of the hull without jacking up and jacking down as in the first embodiment, the working time can be further shortened.
In addition, since the process which transports and installs the windmill 20 and the foundation 30 to the installation sea area on the ocean is the same as that of 1st Embodiment mentioned above, the description is abbreviate | omitted.

なお、上述した各実施形態では、設置する予定の風車２０に対向するように、目標設置位置（基礎３０の位置）を凹所１１側に位置させて停船することとしたが、本発明はこれに限定されるものではなく、例えば、図６に示すように、目標設置位置（基礎３０の位置）に対向する位置まで、他の搭載位置にある風車２０を移動させ（矢印Ｂ参照）、その後、風車２０を目標設置位置まで移動させる（矢印Ａ）こととしても良い。他の搭載位置から目標設置位置に対向する搭載位置まで移動させる作業（矢印Ｂ参照）は、単にクレーン６を旋回させるだけで良いので、それほど作業時間の増大にはならない。   In each of the above-described embodiments, the target installation position (the position of the foundation 30) is positioned on the side of the recess 11 so as to face the windmill 20 to be installed. For example, as shown in FIG. 6, the windmill 20 at another mounting position is moved to a position facing the target installation position (the position of the foundation 30) (see arrow B). The windmill 20 may be moved to the target installation position (arrow A). The operation of moving from another mounting position to the mounting position facing the target installation position (see arrow B) does not increase the operation time so much because it is only necessary to turn the crane 6.

また、図７に示すように、船型本体３の流体抵抗を低減するように、隣り合う張出部５の間に亘って壁部を設けても良い。具体的には、突出部を有する船首形状となるような船首壁部６１や、張出部間に連続して直線状に連結して船側形状を成す船側壁部６３を構成する。なお、これら船首壁部６１や船側壁部６３は、必要に応じて何れか一方を用いても良い。
船首壁部６１や船側壁部６３が設けられた位置では、凹所１１がなくなるので、この位置では風車２０や基礎３０の設置作業を行うことができない。このような場合には、凹所１１が形成された搭載位置まで風車２０を移動させ（矢印Ｂ参照）、その後、設置作業が行われる。 Further, as shown in FIG. 7, a wall portion may be provided between the adjacent overhang portions 5 so as to reduce the fluid resistance of the hull body 3. Specifically, a bow wall portion 61 having a bow shape having a projecting portion and a ship side wall portion 63 that forms a ship side shape by being connected linearly continuously between the overhanging portions are configured. In addition, you may use any one for these bow wall part 61 and the ship side wall part 63 as needed.
In the position where the bow wall portion 61 and the ship side wall portion 63 are provided, since the recess 11 is eliminated, the windmill 20 and the foundation 30 cannot be installed at this position. In such a case, the windmill 20 is moved to the mounting position where the recess 11 is formed (see arrow B), and then the installation work is performed.

１，１Ｂ 船舶（洋上風車設置用船舶）
２ デッキ
３ 船型本体
５ 張出部
６ クレーン
７ ジャッキアップ装置
９ ジャッキアップ脚
１１ 凹所
２０ 風車
２２ 風車タワー
２４ ナセル
２６ 風車翼
３０ 基礎
５２ コラム
５４ ロワーハル 1,1B Vessel (offshore wind turbine installation vessel)
2 Deck 3 Ship body 5 Overhang 6 Crane 7 Jack-up device 9 Jack-up leg 11 Recess 20 Windmill 22 Windmill tower 24 Nacelle 26 Windmill blade 30 Foundation 52 Column 54 Lower hull

Claims (10)

タワー、ナセル及び風車翼が組み立てられた風車、及び／又は、下端が海底に固定されるとともに上端に風車が固定される基礎をデッキ上に搭載し、風車設置海域まで自航または曳航し、前記デッキ上に設けられたクレーンによって前記風車または前記基礎を吊り上げて洋上の目標設置位置に設置する洋上風車設置用船舶であって、
外方へ張り出す張出部を複数有した船型本体とされ、
前記クレーンは、隣り合う前記張出部の間に形成された凹所側を前記目標設置位置として前記風車または前記基礎を設置することを特徴とする洋上風車設置用船舶。 Mounted on the deck a windmill in which the tower, nacelle and windmill blades are assembled and / or the bottom end is fixed to the seabed and the windmill is fixed to the upper end, and self-towed or towed to the windmill installation sea area, An offshore windmill installation ship that lifts the windmill or the foundation by a crane provided on a deck and installs it at a target installation position on the ocean,
It is a hull main body with a plurality of overhanging parts that project outward,
The said wind turbine or the said ship installs the said windmill or the foundation by making the concave side formed between the said overhang | projection parts adjacent to the said target installation position. 前記目標設置位置は、前記クレーンのリーチ範囲内となる前記凹所内に設けられていることを特徴とする請求項１に記載の洋上風車設置用船舶。   The vessel for offshore wind turbine installation according to claim 1, wherein the target installation position is provided in the recess which is within a reach range of the crane. 複数台の前記風車及び／又は複数台の前記基礎の前記デッキ上における搭載位置は、前記クレーンを中心として取り囲むように設けられていることを特徴とする請求項１又は２に記載の洋上風車設置用船舶。   The offshore wind turbine installation according to claim 1 or 2, wherein a plurality of the wind turbines and / or a plurality of the foundations are mounted on the deck so as to surround the crane. For ships. 前記搭載位置は、前記クレーンと前記凹所の間に設けられていることを特徴とする請求項１から３のいずれかに記載の洋上風車設置用船舶。   The offshore windmill installation ship according to any one of claims 1 to 3, wherein the mounting position is provided between the crane and the recess. 各前記張出部には、前記船型本体を海底から持ち上げて支持するジャッキアップ装置が設けられていることを特徴とする請求項１から４のいずれかに記載の洋上風車設置用船舶。   5. The offshore wind turbine installation ship according to claim 1, wherein each of the overhang portions is provided with a jack-up device that lifts and supports the hull main body from the seabed. 船型本体の下方には、複数のコラムを介してロワーハルが設けられていることを特徴とする請求項１から４のいずれかに記載の洋上風車設置用船舶。   The ship for installing an offshore wind turbine according to any one of claims 1 to 4, wherein a lower hull is provided below the hull main body through a plurality of columns. 前記船型本体は、平面視した場合に、略正方形の四隅から外方に前記張出部が張り出した形状とされ、前後左右方向に対称とされた形状とされていることを特徴とする請求項１から６のいずれかに記載の洋上風車設置用船舶。   The ship body has a shape in which the protruding portion protrudes outward from four corners of a substantially square when viewed in a plan view, and has a shape that is symmetrical in the front-rear and left-right directions. A ship for installing an offshore wind turbine according to any one of 1 to 6. 前記凹所が形成された位置とは別の位置に、流体抵抗を低減する壁部が隣り合う前記張出部の間に亘って設けられていることを特徴とする請求項１から６のいずれかに記載の洋上風車設置用船舶。   The wall portion for reducing fluid resistance is provided between the adjacent projecting portions at a position different from the position where the recess is formed. A marine windmill installation ship according to the above. タワー、ナセル及び風車翼が組み立てられた風車、及び／又は、下端が海底に固定されるとともに上端に風車が固定される基礎をデッキ上に搭載し、風車設置海域まで自航または曳航し、前記デッキ上に設けられたクレーンによって前記風車または前記基礎を吊り上げて洋上の目標設置位置に設置する洋上風車設置用船舶を用いた洋上風車設置方法であって、
前記洋上設置用船舶は、外方へ張り出す張出部を複数有した船型本体とされ、
前記クレーンは、隣り合う前記張出部の間に形成された凹所側を前記目標設置位置として前記風車または前記基礎を設置することを特徴とする洋上風車設置用船舶を用いた洋上風車設置方法。 Mounted on the deck a windmill in which the tower, nacelle and windmill blades are assembled and / or the bottom end is fixed to the seabed and the windmill is fixed to the upper end, and self-towed or towed to the windmill installation sea area, An offshore windmill installation method using an offshore windmill installation ship that lifts the windmill or the foundation by a crane provided on a deck and installs it at a target installation position on the ocean,
The offshore installation ship is a hull main body having a plurality of overhanging portions projecting outward,
An offshore windmill installation method using an offshore windmill installation ship characterized in that the crane installs the windmill or the foundation with a recessed side formed between adjacent projecting portions as the target installation position. . 前記風車を正面視した場合の各前記風車翼の角度位置が、隣り合う前記風車の前記風車翼の角度位置と異なるように各前記風車翼を固定して複数台の前記風車を前記デッキ上に搭載することを特徴とする請求項９に記載の洋上風車設置用船舶を用いた洋上風車設置方法。   The wind turbine blades are fixed so that the angular positions of the wind turbine blades when the wind turbine is viewed from the front are different from the angular positions of the wind turbine blades of the adjacent wind turbines, and a plurality of the wind turbines are placed on the deck. The offshore windmill installation method using the ship for offshore windmill installation of Claim 9 characterized by the above-mentioned.
JP2010274503A 2010-11-05 2010-12-09 Ship for installing offshore wind turbine and method for installing offshore wind turbine using the same Pending JP2012112370A (en)

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