WO2008084971A1 - Method of establishing sea wind power generator using the leading rail - Google Patents

Method of establishing sea wind power generator using the leading rail Download PDF

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Publication number
WO2008084971A1
WO2008084971A1 PCT/KR2008/000118 KR2008000118W WO2008084971A1 WO 2008084971 A1 WO2008084971 A1 WO 2008084971A1 KR 2008000118 W KR2008000118 W KR 2008000118W WO 2008084971 A1 WO2008084971 A1 WO 2008084971A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
nacelle
barges
crane
locating
Prior art date
Application number
PCT/KR2008/000118
Other languages
French (fr)
Inventor
Dong Taek Suh
Original Assignee
Dong Taek Suh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dong Taek Suh filed Critical Dong Taek Suh
Publication of WO2008084971A1 publication Critical patent/WO2008084971A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys
    • E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
    • 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
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • 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
    • 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
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • F05B2240/932—Mounting on supporting structures or systems on a structure floating on a liquid surface which is a catamaran-like structure
    • 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

Definitions

  • the present invention relates to a method for installing a sea wind power generator, and more particularly, to a method for installing a sea wind power generator that is capable of installing an upper support to a substantially high position by using the lead rails and an overhead crane in rapid, accurate, and safe manners, providing a working area by fixedly connecting barges at the both sides of a lower support, thereby enhancing the working safety, and rapidly and accurately installing the upper support on the top end of an intermediate support by using the overhead crane and the lead rails are installed on a deck of the barges and the intermediate support.
  • wind power is considered as a pollution-free energy source in a natural state that is most economical in the alternative energy sources developed currently.
  • a wind power technology the electric power that is generated by converting a wind force into a rotary force is directly supplied to power systems or demanders. If the wind power is actively adopted, areas such as a mountain area, a coast and back area, a sea wall and the like can be developed to enhance national territorial utilization efficiencies.
  • the wind power is considered to be a most powerful alternative energy source, and the wind power systems having a capacity of about 32,154MW(which is calculated at the end of 2002) have been already installed over the world.
  • the capacity of the wind power systems installed for only 2002 is 7,227MW, which is higher than that of the nuclear power generators installed in the same year.
  • No.l0-2002-7005923 (filed on May 8, 2002 by an applicant Linta-Jophie, Urjeo) entitled 'A method and system for installing and transporting an off-shore wind power station at sea', which is proposed to solve the difficulty in the installing operation at sea due to waves.
  • the conventional wind power station is manufactured on the land, it is transported by using a crane line and is then installed at sea, such that the wind power station is limited to given weight and size and is not firmly fixed at the sea, thereby causing a degree of stability to be low.
  • Korean Patent Application No.10-2003-7001174 filed on January 27, 2003 by an applicant Hanebic Christopher, et al. entitled 'A floating structure for mounting a wind turbine onto off-shore', wherein the structure is floated to support the wind turbine by means of connecting lines, such that it is difficult to stably install the connection lines, and the structure is moved due to the waves on the sea, thereby causing a degree of stability to be substantially low. Disclosure of Invention Technical Problem
  • the present invention has been made to solve these problems, and it is an object of the present invention to provide a method for installing a sea wind power generator by using lead rails such that a stable work area is provided on sea to install an upper support for the sea wind power generator by using the lead rails and a tower crane, thereby having relatively low installation costs and more effective installation processes when compared with conventional installing methods.
  • a method for installing a sea wind power generator by using lead rails including the steps of: locating a large- sized lower support on sea and close-contacting barges with the both sides of the lower support and fixedly erecting a plurality of fixing posts located at the corners of a deck of each barge on the sea surface, thereby fixing the barges on the sea surface to provide a working area thereon; locating a pair of posts of a tower crane and a cage for each post at the both sides of the lower support, ascending a nacelle assembly and overhead crane, and fixedly coupling an intermediate support to the lower support; and locating the lead rails along the deck of the barges and the front surface of the intermediate support and ascending an upper support along the lead rails by means of the overhead crane.
  • a nacelle base, a support frame, the lead rails, and the tower crane are disassembled from the located positions, a plurality of propellers connected to rollers located inside a rotary part of the nacelle assembly are lifted by means of a winch and are inserted into a plurality of coupling grooves of the rotary part, and then, the barges are separated from the lower post and moved by using a motor ship.
  • FIG.l is a perspective view showing an assembling process of a lower support with barges in a method for installing a sea wind power generator by using lead rails according to the present invention.
  • FIG.2 is a perspective view showing the assembled state of the lower support with the barges in the method for installing a sea wind power generator by using lead rails according to the present invention.
  • FIG.3 is a front view showing a process for installing a nacelle assembly and an intermediate support in the method for installing a sea wind power generator by using lead rails according to the present invention.
  • FIG.4 is a side view showing a process for ascending and locating an upper support by using the lead rails and an overhead crane.
  • FIG.5 is a side view showing an assembled state wherein the nacelle assembly of
  • FIG.4 is descended and assembled with the upper support.
  • FIG.6 is a side view showing a process for lifting and assembling propellers with a rotary part.
  • FIG.7 is a front view showing the appearance of the sea wind power generator after the assembling has been finished.
  • FIG.8 is a front view showing another example of an outside crane adopted in
  • FIG.3. Best Mode for Carrying Out the Invention
  • FIG.l is a perspective view showing an assembling process of a lower support with barges in a method for installing a sea wind power generator by using lead rails according to the present invention
  • FIG.2 is a perspective view showing the assembled state of the lower support with the barges in the method for installing a sea wind power generator by using lead rails according to the present invention
  • FIG.3 is a front view showing a process for installing a nacelle assembly and an intermediate support in the method for installing a sea wind power generator by using lead rails according to the present invention
  • FIG.4 is a side view showing a process for ascending and locating an upper support by using the lead rails and an overhead crane
  • FIG.5 is a side view showing an assembled state wherein the nacelle assembly of FIG.4 is descended and assembled with the upper support
  • FIG.6 is a side view showing a process for lifting and
  • a method for installing a sea wind power generator by using lead rails including: a step (SlO) of locating under a sea surface a lower support 10 having an insertion protrusion 11 formed at the top end thereof so as to be inserted into an intermediate support 20, a horizontal stepped surface 12 extended horizontally from the lower portion of the insertion protrusion 11, and a contacting surface 13 extended vertically and downwardly from the horizontal stepped surface 12 in such a manner as to come into contact with semi-circular contacting grooves 51 formed at one sides of barges 50; a step (S20) of close-contacting the barges 50 each having the semi-circular contacting groove 51 with the contacting surface 13 of the lower support 10 to fixedly erect a plurality of fixing posts 52 located at the corners of a deck of each barge 50 on the sea surface, thereby fixing the barges 50 to the lower support; a step (S30) of locating a pair of posts 61 of a tower crane 60 and
  • the lower support 10 has the insertion protrusion
  • the horizontal stepped surface 12 extended horizontally from the lower portion of the insertion protrusion 11 so as to allow the pair of posts 61 of the tower crane 60 and the cages 62 for the posts 61 to be stably supported thereat, and the contacting surface 13 extended vertically and downwardly from the horizontal stepped surface 12 so as to come into contact with the semi-circular contacting grooves 51 formed at one sides of the barges 50 pulled by the motor ships, such that when the contacting surface 13 tightly abuts against the semi-circular grooves 51 of the barges 50, a horizontal working area is provided.
  • each of the barges 50 has the plurality of fixing posts 52 erectly and fixedly located at the corners of the deck so as to fix each barge 50 under the sea surface, and each of the plurality of fixing posts 52 is supported by means of the post-supporting frame 53.
  • the nacelle assembly 40 is ascended by means of general jack-up by using the pair of posts 61 of the tower crane 60 and the cage 62 for each post at the both sides of the horizontal stepped surface 12 of the lower support 10, and after the intermediate support 20 is insertedly fixed to the insertion protrusion 11 of the lower support 10 by using the outside crane 70, it is supported by a pair of horizontal support stands 21 disposed at the both sides thereof. Then, the lead rails 80 are mounted along the deck of the barges 50 and the front surface of the intermediate support 20.
  • the nacelle assembly 40 includes the supporting frame 44, the nacelle base 43, the rotary part 42, and the nacelle 41.
  • the supporting frame 44 that is located at the lowermost portion of the nacelle assembly 40 has the overhead crane 44- 1 having high power mounted thereon, and the nacelle base 43 located above the supporting frame 44 is connected at the both sides thereof to the posts 61 of the tower crane 60, thereby supporting the nacelle 41 located on the top surface thereof as well as the supporting frame 44 and the overhead crane 44-1.
  • the rotary part 42 is located at the center portion of the front surface of the nacelle 41 and has three coupling grooves 42-1 for inserting the propellers 45 thereinto.
  • the nacelle 41 and the rotary part 42 have a space formed at the inside thereof so as to mount rollers (not shown) for lifting the propellers 45 therein.
  • the upper support 30 is mounted at the top portion of the intermediate support 20 by using the lead rails 80 and the high power of overhead crane 44-1.
  • the nacelle assembly 40 is first ascended, and the upper support 30 is vertically ascended along the lead rails 80 formed along the deck of the barges 50 and the front surface of the intermediate support 20.
  • the overhead crane 44- 1 is moved backwardly to fix the upper support 30 at the top portion of the intermediate support 20, and next, the upper support 30 is fixed by means of the horizontal support stands 31 formed at the both sides thereof.
  • Each of the lead rails 80 has a rail support bar 81 formed between the lower end of the intermediate support 20 and the deck such that the lead rails 80 are reinforced. Further, if a support for extending the upper support 30 is needed, the lead rails 80 can be extended longer, and if the upper support 30 or the extension support on the deck is moved, the outside crane or the winch can be adopted. So as to firmly support the intermediate support 20 and the upper support 30, the horizontal support stands 21 and 31 are adapted to compress and support the intermediate support 20 and the upper support 30 mechanically, hydraulically, or in an electrically driven manner.
  • FIG.5 is a side view showing an assembled state wherein the nacelle assembly 40 of FIG.4 is descended and assembled with the upper support 30, wherein if the lower support 10, the intermediate support 20, and the upper support 30 are completely located, the nacelle assembly 40 connected to the tower crane 60 is descended to allow the upper support 30 to be inserted into a support groove (not shown) formed on the central lower portion thereof, thereby fixing the nacelle 41.
  • FIG.6 is a side view showing a process for lifting and assembling the propellers 45 with the rotary part 42, wherein if the nacelle 41 is completely located, the nacelle 41 and the nacelle base 43 are separated from each other, and thus, the nacelle base 43 and the support frame 44 are descended.
  • the horizontal support stands 21 and 31, the lead rails 80, the nacelle base 43, the support frame 44, and the tower crane 60 are disassembled such that the rollers (not shown) mounted inside the nacelle 41 and the rotary part 42 are mounted to lift the propellers 45 connected to the lifting line by means of the winch 72 mounted on the rear side of the deck, thereby allowing the propellers 45 to be inserted into the plurality of coupling grooves 42-1.
  • the respective propellers 45 are insertedly coupled to the coupling grooves 42-1.
  • Each of the propellers 45 is supported by means of the front support roller stand 45-1 detachably mounted on the deck and a rear support roller stand 45-2, such that when the propellers 45 are lifted to the coupling grooves 42-1, the front support roller stand 45-1 is removed from each of the propellers 45.
  • the propellers 45 are supported by only the rear support roller stand 45-2 and lifted to the coupling grooves 42-1.
  • the rear support roller stand 45-2 is removed from each of the propellers 45.
  • FIG.7 is a front view showing the appearance of the sea wind power generator after the assembling has been finished, wherein if the propellers 45 are all mounted, the barges 50 are disassembled.
  • the fixing posts 52 adapted to fix the barges 50 are ascended to separate the barges 50 from the lower post 10.
  • the separated barges 50 are moved by using the motor ships, thereby finishing the installation of the sea wind power generator by using the lead rails according to the present invention.
  • FIG.8 is a front view showing another example of the outside crane 70 adopted in
  • FIG.3 wherein the intermediate support 20 is lifted by using a large-sized crane 71 mounted at a crane ship. If necessary, the crane 71 delivers and mounts the parts of the nacelle assembly 40 and the tower crane 60.
  • a method for installing a sea wind power generator by using lead rails that is capable of locating the upper support by using the overhead crane and the lead rails at a stable working area on sea, thereby having relatively low installation costs when compared with conventional installing methods and providing more effective and rapid installation processes to advantageously reduce the construction period.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wind Motors (AREA)

Abstract

The present invention relates to a method for installing a sea wind power generator by using lead rails, and the method includes the steps of: locating a large-sized lower support on sea and close-contacting barges with the both sides of the lower support and fixedly erecting a plurality of fixing posts located at the corners of a deck of each barge on the sea surface, thereby fixing the pair of barges on the sea surface to provide a working area thereon; locating a pair of posts of a tower crane and a cage for each post at the both sides of the lower support, ascending a nacelle assembly and overhead crane, and fixedly coupling an intermediate support to the lower support; and locating the lead rails along the deck of the barges and the front surface of the intermediate support and ascending an upper support along the lead rails by means of the overhead crane. Next, after a nacelle base, a support frame, the lead rails, and the tower crane are disassembled from the located positions, a plurality of propellers connected to rollers located inside a rotary part of the nacelle assembly are lifted by means of a winch and are inserted into a plurality of coupling grooves of the rotary part, and then, the barges are separated from the lower post and moved by using a motor ship. The method of this invention has relatively low installation costs when compared with conventional installing methods and provides more effective and rapid in¬ stallation processes to advantageously reduce the construction period.

Description

Description
METHOD OF ESTABLISHING SEA WIND POWER GENERATOR USING THE LEADING RAIL
Technical Field
[1] The present invention relates to a method for installing a sea wind power generator, and more particularly, to a method for installing a sea wind power generator that is capable of installing an upper support to a substantially high position by using the lead rails and an overhead crane in rapid, accurate, and safe manners, providing a working area by fixedly connecting barges at the both sides of a lower support, thereby enhancing the working safety, and rapidly and accurately installing the upper support on the top end of an intermediate support by using the overhead crane and the lead rails are installed on a deck of the barges and the intermediate support. Background Art
[2] As fossil fuel costs have been increased to cause environmental destruction due to the harmful gas generated from the fossil fuel, and further, as dangers related to nuclear power energy are on the rise, wind power is considered as a pollution-free energy source in a natural state that is most economical in the alternative energy sources developed currently. According to a wind power technology, the electric power that is generated by converting a wind force into a rotary force is directly supplied to power systems or demanders. If the wind power is actively adopted, areas such as a mountain area, a coast and back area, a sea wall and the like can be developed to enhance national territorial utilization efficiencies.
[3] With such advantages, the wind power is considered to be a most powerful alternative energy source, and the wind power systems having a capacity of about 32,154MW(which is calculated at the end of 2002) have been already installed over the world. The capacity of the wind power systems installed for only 2002 is 7,227MW, which is higher than that of the nuclear power generators installed in the same year.
[4] Lots of interests in developing the wind power systems are greatly increasing in
Korea so as to cope with realistic problems that the international environments are changed, oil prices are raised, and about 96% of the domestic energy is imported.
[5] In addition, recently, the introduction of the wind power system has been enormously increased since the wind power system has some advantages in that it is simple in structure or installation, it is easy to manage, and it is possible to operate in unmanned and automatic manners.
[6] According to one of prior arts, there is disclosed Korean Patent Application
No.l0-2002-7005923(filed on May 8, 2002 by an applicant Linta-Jophie, Urjeo) entitled 'A method and system for installing and transporting an off-shore wind power station at sea', which is proposed to solve the difficulty in the installing operation at sea due to waves. However, after the conventional wind power station is manufactured on the land, it is transported by using a crane line and is then installed at sea, such that the wind power station is limited to given weight and size and is not firmly fixed at the sea, thereby causing a degree of stability to be low. According to another prior art, there is disclosed Korean Patent Application No.10-2003-7001174(filed on January 27, 2003 by an applicant Hanebic Christopher, et al.) entitled 'A floating structure for mounting a wind turbine onto off-shore', wherein the structure is floated to support the wind turbine by means of connecting lines, such that it is difficult to stably install the connection lines, and the structure is moved due to the waves on the sea, thereby causing a degree of stability to be substantially low. Disclosure of Invention Technical Problem
[7] Accordingly, the present invention has been made to solve these problems, and it is an object of the present invention to provide a method for installing a sea wind power generator by using lead rails such that a stable work area is provided on sea to install an upper support for the sea wind power generator by using the lead rails and a tower crane, thereby having relatively low installation costs and more effective installation processes when compared with conventional installing methods. Technical Solution
[8] To achieve the above object, there is provided a method for installing a sea wind power generator by using lead rails, the method including the steps of: locating a large- sized lower support on sea and close-contacting barges with the both sides of the lower support and fixedly erecting a plurality of fixing posts located at the corners of a deck of each barge on the sea surface, thereby fixing the barges on the sea surface to provide a working area thereon; locating a pair of posts of a tower crane and a cage for each post at the both sides of the lower support, ascending a nacelle assembly and overhead crane, and fixedly coupling an intermediate support to the lower support; and locating the lead rails along the deck of the barges and the front surface of the intermediate support and ascending an upper support along the lead rails by means of the overhead crane. Next, after a nacelle base, a support frame, the lead rails, and the tower crane are disassembled from the located positions, a plurality of propellers connected to rollers located inside a rotary part of the nacelle assembly are lifted by means of a winch and are inserted into a plurality of coupling grooves of the rotary part, and then, the barges are separated from the lower post and moved by using a motor ship.
Advantageous Effects [9] According to the present invention, there is provided a method for installing a sea wind power generator by using lead rails that is capable of locating the upper support by using the overhead crane and the lead rails at a stable working area on sea, thereby having relatively low installation costs when compared with conventional installing methods and providing more effective and rapid installation processes to advantageously reduce the construction period. Brief Description of the Drawings
[10] FIG.l is a perspective view showing an assembling process of a lower support with barges in a method for installing a sea wind power generator by using lead rails according to the present invention.
[11] FIG.2 is a perspective view showing the assembled state of the lower support with the barges in the method for installing a sea wind power generator by using lead rails according to the present invention.
[12] FIG.3 is a front view showing a process for installing a nacelle assembly and an intermediate support in the method for installing a sea wind power generator by using lead rails according to the present invention.
[13] FIG.4 is a side view showing a process for ascending and locating an upper support by using the lead rails and an overhead crane.
[14] FIG.5 is a side view showing an assembled state wherein the nacelle assembly of
FIG.4 is descended and assembled with the upper support.
[15] FIG.6 is a side view showing a process for lifting and assembling propellers with a rotary part.
[16] FIG.7 is a front view showing the appearance of the sea wind power generator after the assembling has been finished.
[17] FIG.8 is a front view showing another example of an outside crane adopted in
FIG.3. Best Mode for Carrying Out the Invention
[18] Hereinafter, an explanation on a method for installing a sea wind power generator by using lead rails according to the present invention will be given with reference to the attached drawings. First, FIG.l is a perspective view showing an assembling process of a lower support with barges in a method for installing a sea wind power generator by using lead rails according to the present invention, FIG.2 is a perspective view showing the assembled state of the lower support with the barges in the method for installing a sea wind power generator by using lead rails according to the present invention, FIG.3 is a front view showing a process for installing a nacelle assembly and an intermediate support in the method for installing a sea wind power generator by using lead rails according to the present invention, FIG.4 is a side view showing a process for ascending and locating an upper support by using the lead rails and an overhead crane, FIG.5 is a side view showing an assembled state wherein the nacelle assembly of FIG.4 is descended and assembled with the upper support, FIG.6 is a side view showing a process for lifting and assembling propellers with a rotary part, FIG.7 is a front view showing the appearance of the sea wind power generator after the assembling has been finished, and FIG.8 is a front view showing another example of an outside crane adopted in FIG.3.
[19] According to the present invention, there is provided a method for installing a sea wind power generator by using lead rails, the method including: a step (SlO) of locating under a sea surface a lower support 10 having an insertion protrusion 11 formed at the top end thereof so as to be inserted into an intermediate support 20, a horizontal stepped surface 12 extended horizontally from the lower portion of the insertion protrusion 11, and a contacting surface 13 extended vertically and downwardly from the horizontal stepped surface 12 in such a manner as to come into contact with semi-circular contacting grooves 51 formed at one sides of barges 50; a step (S20) of close-contacting the barges 50 each having the semi-circular contacting groove 51 with the contacting surface 13 of the lower support 10 to fixedly erect a plurality of fixing posts 52 located at the corners of a deck of each barge 50 on the sea surface, thereby fixing the barges 50 to the lower support; a step (S30) of locating a pair of posts 61 of a tower crane 60 and a cage 62 for each post at the both sides of the horizontal stepped surface 12 of the lower support 10 by using an outside crane 70, ascending a nacelle assembly 40 having a support frame 44 having an overhead crane 44-1, a nacelle base 43 connected to the pair of posts 61 of the tower crane 60, and a nacelle 41 disposed at the top portion thereof by means of general jack-up, fixedly coupling the intermediate support 20 connected to the outside crane 70 to the insertion protrusion 11 of the lower support 10, and locating a pair of horizontal support stands 21 connected to the posts 61 at the both sides of the intermediate support 20; a step (S40) of locating the lead rails 80 along the deck of the barges 50 and the front surface of the intermediate support 20, ascending the nacelle assembly 40 by means of general jack-up, ascending an upper support 30 connected to the overhead crane 44-1 along the lead rails 80 in such a manner as to be coupled to the top end of the intermediate support 20, and locating a pair of horizontal support stands 31 connected to the posts 61 at the both sides of the upper support 30; a step (S50) of descending the nacelle assembly 40 by means of general jack-up so as to insert the upper support 30 into a support groove formed at the bottom portion of the center of the nacelle 41 and locating the nacelle 41 at the upper support 30; a step (S60) of separating the nacelle 41 and the nacelle base 43 from each other, descending the nacelle base 43 and the support frame 44, disassembling the lead rails 80, the nacelle base 43, the support frame 44, and the tower crane 60, locating a roller inside a rotary part 42 of the nacelle 41, lifting a plurality of propellers 45 connected to a lifting line by means of a winch 72 mounted on the deck, and inserting the propellers 45 into a plurality of coupling grooves 42-1 formed on the rotary part 42; and a step (S70) of ascending the fixing posts 52, separating the barges 50 from the lower post 10, and moving the barges 50 by using a motor ship. Further, each of the plurality of fixing posts 52 is supported by means of a post-supporting frame 53, and the outside crane 70 includes a crane 71 of a crane ship.
[20] As shown in FIGS.l and 2, first, the lower support 10 has the insertion protrusion
11 formed at the top end thereof so as to insertedly couple the lower end periphery of the intermediate support 20 thereto, the horizontal stepped surface 12 extended horizontally from the lower portion of the insertion protrusion 11 so as to allow the pair of posts 61 of the tower crane 60 and the cages 62 for the posts 61 to be stably supported thereat, and the contacting surface 13 extended vertically and downwardly from the horizontal stepped surface 12 so as to come into contact with the semi-circular contacting grooves 51 formed at one sides of the barges 50 pulled by the motor ships, such that when the contacting surface 13 tightly abuts against the semi-circular grooves 51 of the barges 50, a horizontal working area is provided. As the horizontal stepped surface 12 is very important, the lower support 10 should be large- sized having a large diameter, and at this time, if the lower support 10 has a space formed in the internal middle portion thereof, the whole weight can be reduced. Further, each of the barges 50 has the plurality of fixing posts 52 erectly and fixedly located at the corners of the deck so as to fix each barge 50 under the sea surface, and each of the plurality of fixing posts 52 is supported by means of the post-supporting frame 53.
[21] Next, as shown in FIG.3, the nacelle assembly 40 is ascended by means of general jack-up by using the pair of posts 61 of the tower crane 60 and the cage 62 for each post at the both sides of the horizontal stepped surface 12 of the lower support 10, and after the intermediate support 20 is insertedly fixed to the insertion protrusion 11 of the lower support 10 by using the outside crane 70, it is supported by a pair of horizontal support stands 21 disposed at the both sides thereof. Then, the lead rails 80 are mounted along the deck of the barges 50 and the front surface of the intermediate support 20. The nacelle assembly 40 includes the supporting frame 44, the nacelle base 43, the rotary part 42, and the nacelle 41. The supporting frame 44 that is located at the lowermost portion of the nacelle assembly 40 has the overhead crane 44- 1 having high power mounted thereon, and the nacelle base 43 located above the supporting frame 44 is connected at the both sides thereof to the posts 61 of the tower crane 60, thereby supporting the nacelle 41 located on the top surface thereof as well as the supporting frame 44 and the overhead crane 44-1. Moreover, the rotary part 42 is located at the center portion of the front surface of the nacelle 41 and has three coupling grooves 42-1 for inserting the propellers 45 thereinto. The nacelle 41 and the rotary part 42 have a space formed at the inside thereof so as to mount rollers (not shown) for lifting the propellers 45 therein.
[22] Furthermore, as shown in FIG.4, the upper support 30 is mounted at the top portion of the intermediate support 20 by using the lead rails 80 and the high power of overhead crane 44-1. In more detail, the nacelle assembly 40 is first ascended, and the upper support 30 is vertically ascended along the lead rails 80 formed along the deck of the barges 50 and the front surface of the intermediate support 20. Thus, if the upper support 30 reaches a position to be located, the overhead crane 44- 1 is moved backwardly to fix the upper support 30 at the top portion of the intermediate support 20, and next, the upper support 30 is fixed by means of the horizontal support stands 31 formed at the both sides thereof. Each of the lead rails 80 has a rail support bar 81 formed between the lower end of the intermediate support 20 and the deck such that the lead rails 80 are reinforced. Further, if a support for extending the upper support 30 is needed, the lead rails 80 can be extended longer, and if the upper support 30 or the extension support on the deck is moved, the outside crane or the winch can be adopted. So as to firmly support the intermediate support 20 and the upper support 30, the horizontal support stands 21 and 31 are adapted to compress and support the intermediate support 20 and the upper support 30 mechanically, hydraulically, or in an electrically driven manner.
[23] FIG.5 is a side view showing an assembled state wherein the nacelle assembly 40 of FIG.4 is descended and assembled with the upper support 30, wherein if the lower support 10, the intermediate support 20, and the upper support 30 are completely located, the nacelle assembly 40 connected to the tower crane 60 is descended to allow the upper support 30 to be inserted into a support groove (not shown) formed on the central lower portion thereof, thereby fixing the nacelle 41.
[24] FIG.6 is a side view showing a process for lifting and assembling the propellers 45 with the rotary part 42, wherein if the nacelle 41 is completely located, the nacelle 41 and the nacelle base 43 are separated from each other, and thus, the nacelle base 43 and the support frame 44 are descended. The horizontal support stands 21 and 31, the lead rails 80, the nacelle base 43, the support frame 44, and the tower crane 60 are disassembled such that the rollers (not shown) mounted inside the nacelle 41 and the rotary part 42 are mounted to lift the propellers 45 connected to the lifting line by means of the winch 72 mounted on the rear side of the deck, thereby allowing the propellers 45 to be inserted into the plurality of coupling grooves 42-1. In this case, as the rotary part 42 is rotated to move the coupling grooves 42- 1 downwardly, the respective propellers 45 are insertedly coupled to the coupling grooves 42-1. Each of the propellers 45 is supported by means of the front support roller stand 45-1 detachably mounted on the deck and a rear support roller stand 45-2, such that when the propellers 45 are lifted to the coupling grooves 42-1, the front support roller stand 45-1 is removed from each of the propellers 45. Thus, the propellers 45 are supported by only the rear support roller stand 45-2 and lifted to the coupling grooves 42-1. After the propellers 45 are inserted into the plurality of coupling grooves 42-1, the rear support roller stand 45-2 is removed from each of the propellers 45.
[25] FIG.7 is a front view showing the appearance of the sea wind power generator after the assembling has been finished, wherein if the propellers 45 are all mounted, the barges 50 are disassembled. In the reverse order to the mounting processes, the fixing posts 52 adapted to fix the barges 50 are ascended to separate the barges 50 from the lower post 10. The separated barges 50 are moved by using the motor ships, thereby finishing the installation of the sea wind power generator by using the lead rails according to the present invention.
[26] FIG.8 is a front view showing another example of the outside crane 70 adopted in
FIG.3, wherein the intermediate support 20 is lifted by using a large-sized crane 71 mounted at a crane ship. If necessary, the crane 71 delivers and mounts the parts of the nacelle assembly 40 and the tower crane 60.
[27] While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention. Industrial Applicability
[28] As described above, according to the present invention, there is provided a method for installing a sea wind power generator by using lead rails that is capable of locating the upper support by using the overhead crane and the lead rails at a stable working area on sea, thereby having relatively low installation costs when compared with conventional installing methods and providing more effective and rapid installation processes to advantageously reduce the construction period.

Claims

Claims
[1] A method for installing a sea wind power generator by using lead rails, the method comprising: a step (SlO) of locating under a sea surface a lower support 10 having an insertion protrusion 11 formed at the top end thereof so as to be inserted into an intermediate support 20, a horizontal stepped surface 12 extended horizontally from the lower portion of the insertion protrusion 11, and a contacting surface 13 extended vertically and downwardly from the horizontal stepped surface 12 in such a manner as to come into contact with semi-circular contacting grooves 51 formed at one sides of barges 50; a step (S20) of close-contacting the barges 50 each having the semi-circular contacting groove 51 with the contacting surface 13 of the lower support 10 to fixedly erect a plurality of fixing posts 52 located at the corners of a deck of each barge 50 on the sea surface, thereby fixing the barges 50 to the lower support; a step (S30) of locating a pair of posts 61 of a tower crane 60 and a cage 62 for each post at the both sides of the horizontal stepped surface 12 of the lower support 10 by using an outside crane 70, ascending a nacelle assembly 40 having a support frame 44 having an overhead crane 44-1, a nacelle base 43 connected to the pair of posts 61 of the tower crane 60, and a nacelle 41 disposed at the top portion thereof by means of general jack-up, fixedly coupling the intermediate support 20 connected to the outside crane 70 to the insertion protrusion 11 of the lower support 10, and locating a pair of horizontal support stands 21 connected to the posts 61 at the both sides of the intermediate support 20; a step (S40) of locating the lead rails 80 along the deck of the barges 50 and the front surface of the intermediate support 20, ascending the nacelle assembly 40 by means of general jack-up, ascending an upper support 30 connected to the overhead crane 44-1 along the lead rails 80 in such a manner as to be coupled to the top end of the intermediate support 20, and locating a pair of horizontal support stands 31 connected to the posts 61 at the both sides of the upper support 30; a step (S50) of descending the nacelle assembly 40 by means of general jack-up so as to insert the upper support 30 into a support groove formed at the bottom portion of the center of the nacelle 41 and locating the nacelle 41 at the upper support 30; a step (S60) of separating the nacelle 41 and the nacelle base 43 from each other, descending the nacelle base 43 and the support frame 44, disassembling the lead rails 80, the nacelle base 43, the support frame 44, and the tower crane 60, locating a roller inside a rotary part 42 of the nacelle 41, lifting a plurality of propellers 45 connected to a lifting line by means of a winch 72 mounted on the deck, and inserting the propellers 45 into a plurality of coupling grooves 42- 1 formed on the rotary part 42; and a step (S70) of ascending the fixing posts 52, separating the barges 50 from the lower post 10, and moving the barges 50 by using a motor ship.
[2] The method as defined as claim 1, wherein the horizontal support stands 21 and
31 are adapted to compress and support the intermediate support 20 and the upper support 30 mechanically, hydraulically, or in an electrically driven manner.
[3] The method as defined as claim 1, wherein each of the propellers 45 is supported by means of a front support roller stand 45-1 and a rear support roller stand 45-2 on the deck, and when the propellers 45 are lifted to the coupling grooves 42-1, the front support roller stand 45-1 is removed from each of the propellers 45 such that each propeller 45 is supported and lifted by the rear support roller stand 45-2.
[4] The method as defined as claim 1, wherein each of the plurality of fixing posts
52 is supported by means of a post-supporting frame 53.
[5] The method as defined as claim 1, wherein the outside crane 70 includes a crane
71 of a crane ship.
[6] The method as defined as claim 1, wherein each of the lead rails 80 has a rail support bar 81 formed between the lower end of the intermediate support 20 and the deck so as to reinforce the mounted lead rails 80.
PCT/KR2008/000118 2007-01-11 2008-01-09 Method of establishing sea wind power generator using the leading rail WO2008084971A1 (en)

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