WO2014058117A1 - Assembling and installing method of wind turbine using drill hole - Google Patents

Assembling and installing method of wind turbine using drill hole Download PDF

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Publication number
WO2014058117A1
WO2014058117A1 PCT/KR2013/002810 KR2013002810W WO2014058117A1 WO 2014058117 A1 WO2014058117 A1 WO 2014058117A1 KR 2013002810 W KR2013002810 W KR 2013002810W WO 2014058117 A1 WO2014058117 A1 WO 2014058117A1
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WO
WIPO (PCT)
Prior art keywords
tower
wind turbine
assembling
drill hole
nacelle
Prior art date
Application number
PCT/KR2013/002810
Other languages
French (fr)
Inventor
Sun Keun Park
Original Assignee
Core Geotechnics Co., Ltd.
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Filing date
Publication date
Application filed by Core Geotechnics Co., Ltd. filed Critical Core Geotechnics Co., Ltd.
Publication of WO2014058117A1 publication Critical patent/WO2014058117A1/en

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    • 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
    • E02D27/52—Submerged foundations, i.e. submerged in open water
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
    • E04H12/342—Arrangements for stacking tower sections on top of each other
    • 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
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • 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
    • F05B2240/95—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 of installing a wind turbine which generates electricity using a rotary force of blades mounted on a nacelle of an upper portion of a tower, and more particularly, to a method of assembling and installing a wind power generator which includes the steps of inserting a tower of a predetermined height into a drill hole formed in the ground, prefabricating a nacelle and blades to an upper portion of the tower in a state where the upper portion of the tower protrudes over the ground, and drawing out the tower, carrying the tower into an installation field and installing it in the installation field.
  • thermal power and nuclear power are used the most generally.
  • thermal power generation has several problems in that it causes a greenhouse effect due to a discharge of carbon dioxide during combustion of fossil fuel and in that it causes environmental pollution due to non-flammable materials.
  • nuclear power generation has a problem in danger due to a radiation leak and in nuclear waste disposal.
  • problems of thermal power generation and nuclear power generation are getting serious, environment-friendly sources of energy have received attention.
  • wind power generation has held the limelight as a strong alternative which can substitute for the thermal power generation because it is more economically feasible than other environment-friendly sources of energy.
  • FIG. 1 is a schematic diagram of a general wind turbine.
  • the wind turbine includes a tower, a nacelle, and blades.
  • the nacelle has a generating unit mounted therein for converting wind power energy into electric energy.
  • the generating unit has a structure that when the blades are rotated by wind, the generating unit of the nacelle generates kinetic energy while rotating and converts the kinetic energy into electric energy.
  • Such a wind turbine is installed in such a manner that the nacelle and the blades are located very high over the ground or over the sea in order to obtain electricity of a predetermined amount.
  • the wind turbine is installed while being assembled in an installation field using a crane. That is, a ground wind turbine is installed while the nacelle and the blades are lifted by the crane and assembled to the upper portion of the tower after the tower is installed on a foundation.
  • a offshore wind turbine is installed while the nacelle and the blades are lifted by the crane and assembled to the upper portion of the tower after a foundation, such as mono-piles, is constructed on the ground under the sea.
  • installation of the wind turbine has several problems in that it is difficult to install the crane and assemble the power generator and it threaten the security of workers due to high place work because the nacelle and the blades must be assembled while being lifted to the upper portion of the considerably high tower.
  • the offshore wind turbine has difficulty in installation and requires lots of time to install it because field conditions, such as action of wind and tidal current, act sensitively.
  • the present invention has been made in an effort to solve the above-mentioned problems occurring in the prior arts, and it is an object of the present invention to provide a method of assembling and installing a wind turbine which includes the steps of inserting a tower of a predetermined height into a drill hole formed in the ground, prefabricating a nacelle and blades to an upper portion of the tower in a state where the upper portion of the tower protrudes over the ground, and drawing out the tower, carrying the tower into an installation field and installing it in the installation field, thereby minimizing high place work.
  • the present invention provides a method of assembling and installing a wind turbine which generates electricity using a rotary force of blades mounted on a nacelle of an upper portion of a tower, the assembling and installing method including: a first step of drilling a hole in the ground; a second step of inserting the tower into the drill hole while protruding the upper portion of the tower out of the drill hole; a third step of assembling the nacelle and the blades to the upper portion of the tower to thereby complete the wind turbine assembly; and a fourth step of drawing out the completed wind turbine assembly from the drill hole and carrying it into an installation field to install it.
  • the present invention provides a method of assembling and installing a wind turbine which generates electricity using a rotary force of blades mounted on a nacelle of an upper portion of a tower, the assembling and installing method including: a first step of drilling a hole in the ground; a second step of inserting the tower into the drill hole while protruding the upper portion of the upper segment of the tower out of the drill hole; a third step of assembling the nacelle and the blades to the upper segment of the tower to thereby complete the wind turbine assembly, drawing out the upper assembly of the wind turbine from the drill hole, inserting the lower segment of the tower into the drill hole, and connecting and assembling the upper assembly of the wind power generator to the lower segment of the tower to thereby complete the wind turbine assembly; and a fourth step of drawing out the completed wind turbine assembly from the drill hole and carrying it into an installation field to install it.
  • the present invention has the following effects.
  • the present invention can minimize high pace work and solve problems related with installation of the crane, difficulty in work, and safety of workers due to the high place work because the present invention includes the steps of inserting the tower of a predetermined height into a drill hole formed in the ground, and prefabricating the nacelle and the blades to the upper portion of the tower in a state where the upper portion of the tower protrudes over the ground.
  • the present invention can simplify field work and remarkably reduce an installation period of time. Therefore, the present invention is favorable to installation of offshore wind turbines, which are sensitive to field conditions, owing to simplification in field work and reduction of the installation period.
  • FIG. 1 is a schematic diagram of a general wind turbine.
  • FIG. 2 is a schematic diagram of a method of assembling and installing a wind turbine according to a first preferred embodiment of the present invention.
  • FIGS. 3 to 14 are detailed views showing the method of assembling and installing the wind turbine according to the first preferred embodiment by step.
  • FIG. 15 is a schematic diagram of a method of assembling and installing a wind turbine according to a second preferred embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a method of assembling and installing a wind turbine according to a first preferred embodiment of the present invention.
  • the present invention relates to a method of installing a wind turbine 10 which generates electricity using a rotary force of blades 13 mounted on a nacelle 12 of an upper portion of a tower 11.
  • the present invention is characterized by the steps of inserting a tower 11 of a predetermined height into a drill hole formed in the ground, prefabricating a nacelle 12 and blades 13 to an upper portion of the tower in a state where the upper portion of the tower protrudes over the ground, and drawing out the tower, carrying the tower into an installation field and installing it in the installation field.
  • the drill hole 20 formed in the ground is utilized as a prefabricating space, and a wind turbine assembly is prefabricated in the drill hole 20, and then, is carried into the installation field to be installed.
  • the method of assembling and installing the wind turbine includes: a first step of drilling a hole in the ground; a second step of inserting the tower 11 into the drill hole 20 while protruding the upper portion of the tower 11 out of the drill hole 20; a third step of assembling the nacelle 12 and the blades 13 to the upper portion of the tower 11 to thereby complete the wind turbine assembly; and a fourth step of drawing out the completed wind turbine assembly from the drill hole 20 and carrying it into the installation field to install it.
  • the drill hole is perforated in such a manner that it has a diameter that the tower can be inserted and is shorter than the tower of the wind turbine in consideration of all circumstances, such as surrounding environments, prices, and others.
  • the upper portion of the tower can protrude out of the drill hole 20 as it is when the tower 11 is inserted into the drill hole 20, so that assembling work of the nacelle 12 and the blades 13 can be easily carried out on the ground.
  • the first step may be carried out while a casing is mounted in order to keep a hollow wall of the drill hole 20.
  • the first step may be carried out while installing an elevator system 21 for easily lifting the tower 11 from the inside of the drill hole 20.
  • the assembly position of the nacelle 12 and the blades 13 can be lower than the height of the tower and located close to the ground, and hence, the present invention can reduce influences of outdoor air, such as wind, during work and reduce problems occurring due to high place work.
  • FIGS. 3 to 11 are detailed views showing the method of assembling and installing the wind turbine according to the first preferred embodiment by step. Referring to the drawings, the present invention will be described in detail.
  • FIG. 3 shows a state where the elevator system 21 is installed inside the drill hole 20 in the first step.
  • the elevator system 21 is a device for easily inserting and drawing out the tower 11 of the wind turbine inside the drill hole 20.
  • the elevator system 21 has a structure that a prop supporter 21a ascends and descends inside the drill hole 20.
  • the elevator system 21 is operated by the tower 11 mounted on the prop supporter 21a.
  • FIG. 3 shows guide rollers 22 mounted around the drill hole 20, and the guide rollers 22 is adopted to keep perpendicularity of the tower 11 and stably support the tower 11 in the process of inserting the tower 11 into the drill hole 20 and drawing out the tower 11 from the drill hole 20.
  • FIGS. 3 to 5 show the process of inserting the tower 11 of the wind turbine into the drill hole 20 in the second step.
  • the second step may be carried out while the tower 11 is fabricated in such a manner that segments 11a, 11b and 11c of a predetermined length are connected with one another.
  • the segments 11a, 11b and 11c of the tower are all inserted and assembled inside the drill hole of the depth corresponding to the height of the tower in the second step.
  • the second step may be carried out in such a manner that some of the segments of the tower are inserted into the drill hole 20 and the remainders are connected and assembled on the ground.
  • the ground crane C1 stands the tower 11 and mounts the tower 11 on the prop supporter 21a, and then, the elevator system 21 lowers.
  • FIGS. 6 to 11 illustrate the process of assembling the nacelle 12 and the three blades 13 to the tower 11 of the wind turbine.
  • the nacelle 12 is assembled to the upper portion of the tower 11 (FIG. 6).
  • the first blade 13a is assembled to the nacelle 12 and is rotated (FIG. 7)
  • the second blade 13b is assembled to the nacelle 12 (FIG. 8).
  • the previously assembled first blade 13a is rotated.
  • the reason is to assemble the second blade 13b at the assembled position of the first blade 13a for stability in assembling work.
  • some of the tower 11 is drawn out, and then, the first and second blades 13a and 13b are rotated (FIGS.
  • the third blade 13c is assembled to the nacelle 12 (FIG. 11).
  • some of the tower 11 is drawn out and the first and second blades 13a and 13b are rotated. So, the assembling work of the tower 11, the nacelle 12 and the blades 13 is finished.
  • FIGS. 12 to 14 illustrate the process of drawing out the wind turbine assembly completed through assembly of the tower 11, the nacelle 12 and the blades 13 and installing it on the water.
  • the elevator system 21 ascends to draw out the wind turbine assembly (FIG. 12), and the drawn wind turbine assembly is seated on a supporter (F) previously mounted on a transit carrier, and then, is moved to the installation field to be installed.
  • the wind power generator assembly is carried on the water using a transport barge (B1), and then, installed on a marine wind power generator support structure 30 using a marine crane (C2) of the jack-up barge (B2) to thereby complete the offshore wind turbine 10.
  • the offshore wind turbine is completely installed as shown in FIG. 14.
  • FIG. 15 is a schematic diagram of a method of assembling and installing a wind turbine according to a second preferred embodiment of the present invention.
  • the wind turbine assembly is completed while assembling the nacelle 12 and the blades 13 to the tower after the segments 11a, 11b and 11c of the tower are connected in order.
  • the wind turbine assembly is completed while a previously assembled upper segment 11d is assembled and connected to a lower signet 11e after the upper segment 11d, the nacelle 12 and the blades 13 are first assembled.
  • the method of assembling and installing the wind turbine according to the present invention includes: a first step of drilling a hole in the ground; a second step of inserting the tower 11 into the drill hole 20 while protruding the upper portion of the upper segment 11d of the tower 11 out of the drill hole 20; a third step of assembling the nacelle 12 and the blades 13 to the upper segment 11d of the tower 11 to thereby complete the wind turbine assembly, drawing out the upper assembly of the wind turbine 10 from the drill hole 20, inserting the lower segment 11e of the tower into the drill hole 20, and connecting and assembling the upper assembly of the wind turbine 10 to the lower segment 11e of the tower to thereby complete the wind turbine assembly; and a fourth step of drawing out the completed wind turbine assembly from the drill hole 20 and carrying it into the installation field to install it.
  • the upper segment 11d and the lower segment 11e of the tower may be respectively single segments or may be respectively formed through connection of many segments.
  • the first step can be carried out simply and economically.
  • the drill hole 20 is low and the assembled position of the nacelle 12 and the blades 13 and the assembled position of the upper segment 11d and the lower segment 11e are closed to the ground surface, the present invention can effectively reduce a burden due to high place work.
  • the second embodiment may be carried out using the elevator system 21 and the guide rollers 22 like the first embodiment as shown in FIG. 3, and the nacelle 12 and the blades 13 may be assembled in the same way illustrated in FIGS. 7 to 10.

Abstract

Disclosed therein is a method of assembling and installing a wind turbine which generates electricity using a rotary force of blades mounted on a nacelle of an upper portion of a tower. The assembling and installing method includes: a first step of drilling a hole in the ground; a second step of inserting the tower into the drill hole; a third step of assembling the nacelle and the blades to the upper portion of the tower to thereby complete the wind turbine assembly; and a fourth step of drawing out the completed wind turbine assembly from the drill hole and carrying it into an installation field to install it.

Description

ASSEMBLING AND INSTALLING METHOD OF WIND TURBINE USING DRILL HOLE
The present invention relates to a method of installing a wind turbine which generates electricity using a rotary force of blades mounted on a nacelle of an upper portion of a tower, and more particularly, to a method of assembling and installing a wind power generator which includes the steps of inserting a tower of a predetermined height into a drill hole formed in the ground, prefabricating a nacelle and blades to an upper portion of the tower in a state where the upper portion of the tower protrudes over the ground, and drawing out the tower, carrying the tower into an installation field and installing it in the installation field.
As a source of energy, thermal power and nuclear power are used the most generally. However, thermal power generation has several problems in that it causes a greenhouse effect due to a discharge of carbon dioxide during combustion of fossil fuel and in that it causes environmental pollution due to non-flammable materials. Moreover, nuclear power generation has a problem in danger due to a radiation leak and in nuclear waste disposal. As such problems of thermal power generation and nuclear power generation are getting serious, environment-friendly sources of energy have received attention. Particularly, wind power generation has held the limelight as a strong alternative which can substitute for the thermal power generation because it is more economically feasible than other environment-friendly sources of energy.
FIG. 1 is a schematic diagram of a general wind turbine. As shown in FIG. 1, the wind turbine includes a tower, a nacelle, and blades. The nacelle has a generating unit mounted therein for converting wind power energy into electric energy. The generating unit has a structure that when the blades are rotated by wind, the generating unit of the nacelle generates kinetic energy while rotating and converts the kinetic energy into electric energy. Such a wind turbine is installed in such a manner that the nacelle and the blades are located very high over the ground or over the sea in order to obtain electricity of a predetermined amount.
In the meantime, the wind turbine is installed while being assembled in an installation field using a crane. That is, a ground wind turbine is installed while the nacelle and the blades are lifted by the crane and assembled to the upper portion of the tower after the tower is installed on a foundation. A offshore wind turbine is installed while the nacelle and the blades are lifted by the crane and assembled to the upper portion of the tower after a foundation, such as mono-piles, is constructed on the ground under the sea. As described above, installation of the wind turbine has several problems in that it is difficult to install the crane and assemble the power generator and it threaten the security of workers due to high place work because the nacelle and the blades must be assembled while being lifted to the upper portion of the considerably high tower. Particularly, the offshore wind turbine has difficulty in installation and requires lots of time to install it because field conditions, such as action of wind and tidal current, act sensitively.
Accordingly, the present invention has been made in an effort to solve the above-mentioned problems occurring in the prior arts, and it is an object of the present invention to provide a method of assembling and installing a wind turbine which includes the steps of inserting a tower of a predetermined height into a drill hole formed in the ground, prefabricating a nacelle and blades to an upper portion of the tower in a state where the upper portion of the tower protrudes over the ground, and drawing out the tower, carrying the tower into an installation field and installing it in the installation field, thereby minimizing high place work.
To achieve the above objects, the present invention provides a method of assembling and installing a wind turbine which generates electricity using a rotary force of blades mounted on a nacelle of an upper portion of a tower, the assembling and installing method including: a first step of drilling a hole in the ground; a second step of inserting the tower into the drill hole while protruding the upper portion of the tower out of the drill hole; a third step of assembling the nacelle and the blades to the upper portion of the tower to thereby complete the wind turbine assembly; and a fourth step of drawing out the completed wind turbine assembly from the drill hole and carrying it into an installation field to install it.
In another aspect of the present invention, the present invention provides a method of assembling and installing a wind turbine which generates electricity using a rotary force of blades mounted on a nacelle of an upper portion of a tower, the assembling and installing method including: a first step of drilling a hole in the ground; a second step of inserting the tower into the drill hole while protruding the upper portion of the upper segment of the tower out of the drill hole; a third step of assembling the nacelle and the blades to the upper segment of the tower to thereby complete the wind turbine assembly, drawing out the upper assembly of the wind turbine from the drill hole, inserting the lower segment of the tower into the drill hole, and connecting and assembling the upper assembly of the wind power generator to the lower segment of the tower to thereby complete the wind turbine assembly; and a fourth step of drawing out the completed wind turbine assembly from the drill hole and carrying it into an installation field to install it.
The present invention has the following effects.
First, the present invention can minimize high pace work and solve problems related with installation of the crane, difficulty in work, and safety of workers due to the high place work because the present invention includes the steps of inserting the tower of a predetermined height into a drill hole formed in the ground, and prefabricating the nacelle and the blades to the upper portion of the tower in a state where the upper portion of the tower protrudes over the ground.
Second, because the prefabricated assembly of the tower and the blades is simply installed on the foundation in the installation field of the wind turbine, the present invention can simplify field work and remarkably reduce an installation period of time. Therefore, the present invention is favorable to installation of offshore wind turbines, which are sensitive to field conditions, owing to simplification in field work and reduction of the installation period.
FIG. 1 is a schematic diagram of a general wind turbine.
FIG. 2 is a schematic diagram of a method of assembling and installing a wind turbine according to a first preferred embodiment of the present invention.
FIGS. 3 to 14 are detailed views showing the method of assembling and installing the wind turbine according to the first preferred embodiment by step.
FIG. 15 is a schematic diagram of a method of assembling and installing a wind turbine according to a second preferred embodiment of the present invention.
(Explanation of essential reference numerals in drawings)
10: wind turbine
11: tower
11a, 11b, 11c, 11d, 11e: tower segment
12: nacelle
13, 13a, 13b, 13c: blade
20: drill hole
21: elevator system
22: guide roller
30: marine wind turbine support structure
C1, C2: crane
B1: transport barge
B2: jack-up barge
Reference will be now made in detail to the preferred embodiment of the present invention with reference to the attached drawings.
FIG. 2 is a schematic diagram of a method of assembling and installing a wind turbine according to a first preferred embodiment of the present invention.
The present invention relates to a method of installing a wind turbine 10 which generates electricity using a rotary force of blades 13 mounted on a nacelle 12 of an upper portion of a tower 11. As shown in FIG. 2, the present invention is characterized by the steps of inserting a tower 11 of a predetermined height into a drill hole formed in the ground, prefabricating a nacelle 12 and blades 13 to an upper portion of the tower in a state where the upper portion of the tower protrudes over the ground, and drawing out the tower, carrying the tower into an installation field and installing it in the installation field. The drill hole 20 formed in the ground is utilized as a prefabricating space, and a wind turbine assembly is prefabricated in the drill hole 20, and then, is carried into the installation field to be installed.
In detail, the method of assembling and installing the wind turbine according to the present invention includes: a first step of drilling a hole in the ground; a second step of inserting the tower 11 into the drill hole 20 while protruding the upper portion of the tower 11 out of the drill hole 20; a third step of assembling the nacelle 12 and the blades 13 to the upper portion of the tower 11 to thereby complete the wind turbine assembly; and a fourth step of drawing out the completed wind turbine assembly from the drill hole 20 and carrying it into the installation field to install it. Here, in the first step, it is preferable that the drill hole is perforated in such a manner that it has a diameter that the tower can be inserted and is shorter than the tower of the wind turbine in consideration of all circumstances, such as surrounding environments, prices, and others. Then, in the second step, the upper portion of the tower can protrude out of the drill hole 20 as it is when the tower 11 is inserted into the drill hole 20, so that assembling work of the nacelle 12 and the blades 13 can be easily carried out on the ground. In the meantime, the first step may be carried out while a casing is mounted in order to keep a hollow wall of the drill hole 20. Alternatively, the first step may be carried out while installing an elevator system 21 for easily lifting the tower 11 from the inside of the drill hole 20.
As described above, because the nacelle 12 and the blades 13 are assembled to the upper portion of the tower 11 in the state where the tower 11 is inserted into the drill hole formed in the ground and only the upper portion of the tower protrudes over the ground, the assembly position of the nacelle 12 and the blades 13 can be lower than the height of the tower and located close to the ground, and hence, the present invention can reduce influences of outdoor air, such as wind, during work and reduce problems occurring due to high place work.
FIGS. 3 to 11 are detailed views showing the method of assembling and installing the wind turbine according to the first preferred embodiment by step. Referring to the drawings, the present invention will be described in detail.
FIG. 3 shows a state where the elevator system 21 is installed inside the drill hole 20 in the first step. The elevator system 21 is a device for easily inserting and drawing out the tower 11 of the wind turbine inside the drill hole 20. In FIG. 3, the elevator system 21 has a structure that a prop supporter 21a ascends and descends inside the drill hole 20. The elevator system 21 is operated by the tower 11 mounted on the prop supporter 21a. Moreover, FIG. 3 shows guide rollers 22 mounted around the drill hole 20, and the guide rollers 22 is adopted to keep perpendicularity of the tower 11 and stably support the tower 11 in the process of inserting the tower 11 into the drill hole 20 and drawing out the tower 11 from the drill hole 20.
FIGS. 3 to 5 show the process of inserting the tower 11 of the wind turbine into the drill hole 20 in the second step. In the case of a very high power 11, the second step may be carried out while the tower 11 is fabricated in such a manner that segments 11a, 11b and 11c of a predetermined length are connected with one another. In FIGS. 3 to 5, the segments 11a, 11b and 11c of the tower are all inserted and assembled inside the drill hole of the depth corresponding to the height of the tower in the second step. However, if the drill hole is much lower than the height of the tower 11 due to various circumstances, the second step may be carried out in such a manner that some of the segments of the tower are inserted into the drill hole 20 and the remainders are connected and assembled on the ground. In the meantime, in the case that the elevator system 21 is installed, the ground crane C1 stands the tower 11 and mounts the tower 11 on the prop supporter 21a, and then, the elevator system 21 lowers.
FIGS. 6 to 11 illustrate the process of assembling the nacelle 12 and the three blades 13 to the tower 11 of the wind turbine. First, the nacelle 12 is assembled to the upper portion of the tower 11 (FIG. 6). Next, the first blade 13a is assembled to the nacelle 12 and is rotated (FIG. 7), and then, the second blade 13b is assembled to the nacelle 12 (FIG. 8). In order to assemble the second blade 13b, the previously assembled first blade 13a is rotated. The reason is to assemble the second blade 13b at the assembled position of the first blade 13a for stability in assembling work. Next, some of the tower 11 is drawn out, and then, the first and second blades 13a and 13b are rotated (FIGS. 9 and 10), and then, the third blade 13c is assembled to the nacelle 12 (FIG. 11). In order to secure an assembly space of the third blade 13c, some of the tower 11 is drawn out and the first and second blades 13a and 13b are rotated. So, the assembling work of the tower 11, the nacelle 12 and the blades 13 is finished.
FIGS. 12 to 14 illustrate the process of drawing out the wind turbine assembly completed through assembly of the tower 11, the nacelle 12 and the blades 13 and installing it on the water. In the case that the elevator system 21 is installed, the elevator system 21 ascends to draw out the wind turbine assembly (FIG. 12), and the drawn wind turbine assembly is seated on a supporter (F) previously mounted on a transit carrier, and then, is moved to the installation field to be installed. In FIG. 13, the wind power generator assembly is carried on the water using a transport barge (B1), and then, installed on a marine wind power generator support structure 30 using a marine crane (C2) of the jack-up barge (B2) to thereby complete the offshore wind turbine 10. Through the above process, the offshore wind turbine is completely installed as shown in FIG. 14.
FIG. 15 is a schematic diagram of a method of assembling and installing a wind turbine according to a second preferred embodiment of the present invention. In the first preferred embodiment, the wind turbine assembly is completed while assembling the nacelle 12 and the blades 13 to the tower after the segments 11a, 11b and 11c of the tower are connected in order. However, in the second preferred embodiment, the wind turbine assembly is completed while a previously assembled upper segment 11d is assembled and connected to a lower signet 11e after the upper segment 11d, the nacelle 12 and the blades 13 are first assembled.
In detail, in the second preferred embodiment, the method of assembling and installing the wind turbine according to the present invention includes: a first step of drilling a hole in the ground; a second step of inserting the tower 11 into the drill hole 20 while protruding the upper portion of the upper segment 11d of the tower 11 out of the drill hole 20; a third step of assembling the nacelle 12 and the blades 13 to the upper segment 11d of the tower 11 to thereby complete the wind turbine assembly, drawing out the upper assembly of the wind turbine 10 from the drill hole 20, inserting the lower segment 11e of the tower into the drill hole 20, and connecting and assembling the upper assembly of the wind turbine 10 to the lower segment 11e of the tower to thereby complete the wind turbine assembly; and a fourth step of drawing out the completed wind turbine assembly from the drill hole 20 and carrying it into the installation field to install it. In this instance, the upper segment 11d and the lower segment 11e of the tower may be respectively single segments or may be respectively formed through connection of many segments.
In the second preferred embodiment, because the drill hole 20 is as deep as not the entire height of the tower but just the upper segment 11d and the lower segment 11e of the tower are inserted into the drill hole 20, the first step can be carried out simply and economically. Additionally, in the second embodiment, because the drill hole 20 is low and the assembled position of the nacelle 12 and the blades 13 and the assembled position of the upper segment 11d and the lower segment 11e are closed to the ground surface, the present invention can effectively reduce a burden due to high place work. Meanwhile, not shown in the drawing in detail, but the second embodiment may be carried out using the elevator system 21 and the guide rollers 22 like the first embodiment as shown in FIG. 3, and the nacelle 12 and the blades 13 may be assembled in the same way illustrated in FIGS. 7 to 10.
As described above, while the present invention has been particularly shown and described with reference to the example embodiments thereof, it will be understood by those of ordinary skill in the art that the above embodiments of the present invention are all exemplified and various changes, modifications and equivalents may be made therein without departing from the scope of the present invention. Therefore, it would be understood that the technical and protective scope of the present invention shall be defined by the technical idea as defined by the following claims.

Claims (7)

  1. A method of assembling and installing a wind turbine which generates electricity using a rotary force of blades (13) mounted on a nacelle (12) of an upper portion of a tower (11), the assembling and installing method comprising:
    a first step of drilling a hole in the ground;
    a second step of inserting the tower (11) into the drill hole (20) while protruding the upper portion of the tower (11) out of the drill hole (20);
    a third step of assembling the nacelle (12) and the blades (13) to the upper portion of the tower (11) to thereby complete the wind turbine assembly; and
    a fourth step of drawing out the completed wind turbine assembly from the drill hole (20) and carrying it into an installation field to install it.
  2. The assembling and installing method of the wind turbine according to claim 1, wherein in the second step, tower segments (11a, 11b, 11c) fabricated into a predetermined length are connected and assembled.
  3. A method of assembling and installing a wind turbine which generates electricity using a rotary force of blades (13) mounted on a nacelle (12) of an upper portion of a tower (11), the assembling and installing method comprising:
    a first step of drilling a hole in the ground;
    a second step of inserting the tower (11) into the drill hole (20) while protruding the upper portion of the upper segment (11d) of the tower (11) out of the drill hole (20);
    a third step of assembling the nacelle (12) and the blades (13) to the upper segment (11d) of the tower (11) to thereby complete the wind turbine assembly, drawing out the upper assembly of the wind turbine (10) from the drill hole (20), inserting the lower segment (11e) of the tower into the drill hole (20), and connecting and assembling the upper assembly of the wind turbine (10) to the lower segment (11e) of the tower to thereby complete the wind turbine assembly; and
    a fourth step of drawing out the completed wind turbine assembly from the drill hole (20) and carrying it into an installation field to install it.
  4. The assembling and installing method of the wind turbine according to one of claims 1 to 3, wherein the first step further comprises a step of installing an elevator system (21) having a structure that a prop supporter (21a) ascends and descends inside the drill hole (20),
    wherein in the second step, the tower (11) is loaded on the prop supporter (21) and the elevator system (21) is operated, and
    wherein in the fourth step, the elevator system (21) is operated to draw out the wind turbine assembly.
  5. The assembling and installing method of the wind turbine according to one of claims 1 to 3, wherein the first step further comprises a step of installing guide rollers (22) around the drill hole (20).
  6. The assembling and installing method of the wind turbine according to one of claims 1 to 3, wherein the third step comprises the steps of:
    Assembling the nacelle (12) to the tower (11); assembling the first blade (13) to the nacelle (12) and rotating the first blade (13); assembling the second blade (13) to the nacelle (12); drawing out some of the tower (11) and rotating the first and second blades (13); and assembling the third blade (13) to the nacelle (12).
  7. The assembling and installing method of the wind turbine according to one of claims 1 to 3, wherein in the fourth step, the completed wind turbine assembly is carried onto the sea and installed on a offshore wind turbine support structure (30) which is previously constructed on the sea.
PCT/KR2013/002810 2012-10-09 2013-04-04 Assembling and installing method of wind turbine using drill hole WO2014058117A1 (en)

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KR10-2012-0111917 2012-10-09
KR1020120111917A KR101233726B1 (en) 2012-10-09 2012-10-09 Fabricating and installing method of wind turbine generator by using drill hole

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WO2022084330A1 (en) * 2020-10-22 2022-04-28 Itrec B.V. Assembling and installing a wind turbine

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EP3792486A1 (en) * 2019-09-16 2021-03-17 Siemens Gamesa Renewable Energy A/S Method of offshore mounting a wind turbine

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JP2000291360A (en) * 1999-04-01 2000-10-17 Wako Engineering Corp Electric pole building-up construction method and auxiliary pipe used therefor
JP2001207948A (en) * 2000-01-21 2001-08-03 Pc Bridge Co Ltd Composite foundation structure for marine installation type wind power generation and its constructing method
JP2007192070A (en) * 2006-01-18 2007-08-02 Aoki Asunaro Kensetsu Kk Slewing gear of lift-up device for building tower structure
JP2011183835A (en) * 2010-03-04 2011-09-22 Daiichi Kensetsu Kiko Co Ltd Deck lifting-lowering workbench ship and construction method of offshore wind power generation facility

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Publication number Priority date Publication date Assignee Title
JP2000291360A (en) * 1999-04-01 2000-10-17 Wako Engineering Corp Electric pole building-up construction method and auxiliary pipe used therefor
JP2001207948A (en) * 2000-01-21 2001-08-03 Pc Bridge Co Ltd Composite foundation structure for marine installation type wind power generation and its constructing method
JP2007192070A (en) * 2006-01-18 2007-08-02 Aoki Asunaro Kensetsu Kk Slewing gear of lift-up device for building tower structure
JP2011183835A (en) * 2010-03-04 2011-09-22 Daiichi Kensetsu Kiko Co Ltd Deck lifting-lowering workbench ship and construction method of offshore wind power generation facility

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022084330A1 (en) * 2020-10-22 2022-04-28 Itrec B.V. Assembling and installing a wind turbine

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