CN114872846A - Floating type fan foundation transportation structure and construction method thereof - Google Patents
Floating type fan foundation transportation structure and construction method thereof Download PDFInfo
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- CN114872846A CN114872846A CN202210441853.3A CN202210441853A CN114872846A CN 114872846 A CN114872846 A CN 114872846A CN 202210441853 A CN202210441853 A CN 202210441853A CN 114872846 A CN114872846 A CN 114872846A
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- 238000007667 floating Methods 0.000 title claims abstract description 96
- 238000010276 construction Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 158
- 238000004873 anchoring Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 21
- 210000001503 joint Anatomy 0.000 abstract description 12
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
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- 239000010959 steel Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
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- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B77/00—Transporting or installing offshore structures on site using buoyancy forces, e.g. using semi-submersible barges, ballasting the structure or transporting of oil-and-gas platforms
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- 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
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Abstract
The invention provides a floating type wind turbine foundation transportation structure and a construction method thereof, and belongs to the technical field of offshore wind power generation equipment. The transportation structure comprises a ship body, a support assembly, an above-water upright post, an underwater upright post and two strip-shaped connecting sections. One end of the ship body is provided with an installation notch, and the installation surfaces at the two ends of the installation notch are provided with slide rails. The support component comprises two vertical righting supports, the two vertical righting supports are slidably mounted on the two slide rails respectively, and the vertical righting supports are provided with clasping rings. The clamping rings on the two vertical righting supports are combined to clamp and fix the overwater stand column in the mounting notch, the side wall of the overwater stand column is provided with a rotating shaft, the middle parts of the two strip-shaped connecting sections are rotatably connected with the rotating shaft, and one end of each strip-shaped connecting section is fixedly connected with the underwater stand column. By adopting the transportation structure and the construction method, the transportation cost is reduced, the operation difficulty of butt joint installation of the floating type fan foundation and the offshore fan on the sea is reduced, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of offshore wind power generation equipment, in particular to a floating type wind turbine foundation transportation structure and a construction method thereof.
Background
As a clean energy, offshore wind power is abundant in resources, is close to urban load centers, and is convenient to consume on site, so that the development of offshore wind power gradually becomes an important support for global energy structure transformation. With the continuous improvement of energy demand, the development of offshore wind power gradually develops to deeper and farther sea areas. The deep and distant sea areas have abundant resources, but with the increase of water depth, the construction cost of the traditional fixed foundation is increased sharply, the economic benefit is reduced, and the floating foundation needs to be developed to support the large-scale offshore wind turbine.
In the related art, a single-column (Spar) type foundation is one of floating wind turbine foundations, which is simple in design and manufacture and has stability. But due to the structural style characteristics, the combined offshore wind turbine is longer in overall length when being erected on the sea and is only suitable for deep sea areas with the grade of more than one hundred meters. After the single-column foundation is prefabricated and built on land, vertical floating transportation cannot be achieved due to insufficient water depth of a shallow sea area, and barge transportation or horizontal floating transportation is mostly adopted for current transportation.
By adopting the mode in the related technology, because a large barge is adopted to integrally transport the assembled floating fan, the transportation cost can be greatly increased, and the floating fan foundation and the offshore fan are always carried or transported in a horizontal state by adopting a split structure. After the ship is transported to a designated place, floating crane and offshore butt joint installation are carried out through facilities such as a crane ship, the whole construction period is long, the installation efficiency is low, and the operation difficulty is high.
Disclosure of Invention
The embodiment of the invention provides a floating type wind turbine foundation transportation structure and a construction method thereof, which can effectively reduce the operation difficulty of butt joint installation of a floating type wind turbine foundation and an offshore wind turbine at sea and improve the construction efficiency while realizing the integral transportation cost of the floating type wind turbine foundation and the offshore wind turbine. The technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a floating wind turbine foundation transportation structure, where the floating wind turbine foundation transportation structure includes: a ship body, a bracket component, an above-water upright post, an underwater upright post and two strip-shaped connecting sections,
the ship body is provided with a mounting surface, one end of the ship body is provided with a mounting notch arranged along the central axis direction of the ship body, the mounting surfaces at the two ends of the mounting notch are provided with slide rails, the slide rails are vertical to the central axis of the ship body, and the two slide rails are symmetrically arranged relative to the mounting notch;
the support assembly comprises two vertical righting supports, the two vertical righting supports are respectively slidably mounted on the two slide rails, a semicircular arc-shaped clasping ring is arranged on the end face, facing one side of the mounting notch, of each vertical righting support, the water upright post is arranged in the vertical direction, and the two vertical righting supports are configured to be capable of moving in opposite directions along the slide rails so that the clasping rings on the two vertical righting supports are oppositely combined to clamp and fix the water upright post in the mounting notch;
the one end of stand on water has the connector that is used for being connected with offshore wind turbine, have two pivots along radial setting on the lateral wall of stand on water, two the pivot for stand symmetrical arrangement on water, the middle part of two bar linkage segments is rotatable respectively connect in two in the pivot, the one end of two bar linkage segments with stand fixed connection under water, the stand under water with two bar linkage segments are parallel, stand inside has the ballast tank under water.
Optionally, the other end of the strip-shaped connecting section is provided with a first bolt hole, a second bolt hole matched with the first bolt hole is formed in the side wall of the water upright post, and the second bolt hole is located between the rotating shaft and the connecting port.
Optionally, the side wall of the water upright post is provided with a mounting flange which protrudes in the radial direction, the mounting flange is located between the second bolt hole and the connecting port, and the water upright post is configured such that when the water upright post is clamped and fixed in the mounting recess by the clasps on the two upright righting brackets, the end face of the mounting flange on one side facing the rotating shaft abuts against the clasps.
Optionally, the vertical righting support is provided with a plurality of the clasps, the clasps are arranged at intervals along the extending direction of the vertical righting support, and the water upright post is provided with a plurality of the assembling flanges in one-to-one correspondence with the clasps.
Optionally, a fixing lug is arranged at one end, connected with the slide rail in a sliding manner, of the vertical righting support, a third bolt hole is formed in the fixing lug, a plurality of fourth bolt holes matched with the third bolt holes are formed in the mounting surface, which is located beside the slide rail, and the plurality of fourth bolt holes are uniformly arranged at intervals along the length direction of the slide rail.
Optionally, an elastic gasket is arranged on the end face of the inner ring of the clasping ring.
Optionally, the other end of the ship body is provided with two water guide surfaces, the water guide surfaces and a numerical plane where the central axis of the ship body is located are arranged at an acute angle, and the two water guide surfaces are symmetrically arranged relative to the central axis of the ship body.
Optionally, the vertical righting support is a multi-layer truss structure.
Optionally, the clasping ring is connected with the vertical righting bracket by welding.
In a second aspect, an embodiment of the present invention provides a construction method, for constructing the floating wind turbine foundation transport structure described in the first aspect, where the construction method includes:
connecting the above-water upright post and the underwater upright post by using the two strip-shaped connecting sections;
the two clasping rings on the two vertical righting supports are closed to clamp and fix the above-water upright post in the mounting notch along the vertical direction, the underwater upright post is in a horizontal floating state of naturally suspending on the water surface, and the ship body is dragged to carry out the above-water transportation of the above-water upright post and the underwater upright post;
after the ship body reaches a designated position, adjusting the weight of the ballast tank to enable the other end of the underwater upright post to sink and drive the two strip-shaped connecting sections to rotate around the rotating shaft until the underwater upright post is in a vertical floating state that the whole body is coaxial with the above-water upright post;
fixedly connecting one end of the underwater upright column with the other end of the overwater upright column, adjusting the draft depths of the overwater upright column and the underwater upright column, anchoring with a seabed and stretching a mooring line;
and adjusting the relative positions of the two vertical righting supports along the slide rail, and releasing the clamping and fixing of the clasping ring on the above-water stand column.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the floating fan foundation is divided into an overwater stand column and an underwater stand column, and the two strip-shaped connecting sections are rotatably connected with a connecting structure formed by the rotating shaft. A hull for hauling only need through the fixed stand on water that needs set up on water of bracket component centre gripping, and let the stand under water keep floating and follow the transportation by water on the surface of water, can realize floating fan foundation's whole transportation, reduces the use of large-scale barge. After the underwater upright post is towed in place, the underwater upright post can sink under the guidance of the two strip-shaped connecting sections and rotate to the position coaxial with the above-water upright post by adjusting the weight of the ballast tank on the underwater upright post. After the underwater stand column rotates in place, the two strip-shaped connecting sections can continue to play a role in restraining the relative position between the underwater stand column and the overwater stand column, workers can directly conduct overwater butt joint on the overwater stand column and the underwater stand column conveniently, connection of the overwater stand column and the offshore wind turbine can be completed onshore, overwater hoisting construction such as floating crane and the like is not needed to be conducted through facilities such as a crane ship and the like, the operation difficulty of butt joint installation of a floating wind turbine foundation and the offshore wind turbine on the sea is effectively reduced, and construction efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a floating wind turbine foundation transportation structure in a floating state according to an embodiment of the present invention;
fig. 2 is a schematic side view of a basic transportation structure of a wind turbine provided in an embodiment of the present invention in a floating state;
FIG. 3 is a partial structural schematic view of a bracket assembly provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic top view of a clasp according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a water column provided by an embodiment of the invention;
FIG. 6 is a schematic cross-sectional view of an underwater column provided by an embodiment of the invention;
fig. 7 is a schematic structural diagram of a floating wind turbine foundation transport structure provided by an embodiment of the present invention in an assembled state;
fig. 8 is a schematic top view of another floating wind turbine foundation transport structure in a floating state according to an embodiment of the present invention;
FIG. 9 is a schematic view of an assembled attitude structure of a floating wind turbine foundation according to an embodiment of the present invention;
fig. 10 is a flowchart of a construction method according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In the related art, a single-column (Spar) type foundation is one of floating wind turbine foundations, which is simple in design and manufacture and has stability. But due to the structural style characteristics, the combined offshore wind turbine is longer in overall length when being erected on the sea and is only suitable for deep sea areas with the grade of more than one hundred meters. After the single-column foundation is prefabricated and built on land, vertical floating transportation cannot be achieved due to insufficient water depth of a shallow sea area, and barge transportation or horizontal floating transportation is mostly adopted for current transportation.
By adopting the mode in the related technology, because a large barge is adopted to integrally transport the assembled floating fan, the transportation cost can be greatly increased, and the floating fan foundation and the offshore fan are always carried or transported in a horizontal state by adopting a split structure. After the ship is transported to a designated place, floating crane and offshore butt joint installation are carried out through facilities such as a crane ship, the whole construction period is long, the installation efficiency is low, and the operation difficulty is high.
Fig. 1 is a schematic structural diagram of a floating wind turbine foundation transportation structure in a floating state according to an embodiment of the present invention. Fig. 2 is a schematic side view of a basic transportation structure of a wind turbine provided in an embodiment of the present invention in a floating state. Fig. 3 is a partial structural schematic view of a bracket assembly provided in an embodiment of the present invention. Fig. 4 is a schematic top view of a clasp according to an embodiment of the present invention. Fig. 5 is a schematic structural diagram of a water column provided by an embodiment of the invention. Fig. 6 is a schematic cross-sectional structural view of an underwater column provided in an embodiment of the present invention. Fig. 7 is a structural schematic diagram of a floating wind turbine foundation transport structure provided in an assembled state according to an embodiment of the present invention. Fig. 8 is a schematic top view of another floating wind turbine foundation transport structure in a floating state according to an embodiment of the present invention. Fig. 9 is a schematic structural diagram of an assembled attitude of a floating wind turbine foundation according to an embodiment of the present invention. As shown in fig. 1 to 9, by practice, the present applicant provides a floating wind turbine foundation transport structure comprising a hull 1, a bracket assembly 2, an above-water column 3, an under-water column 4 and two strip-shaped connecting sections 5.
The ship body 1 is provided with a mounting surface 1a, one end of the ship body 1 is provided with a mounting notch 11 arranged along the central axis direction of the ship body 1, the mounting surfaces 1a at the two ends of the mounting notch 11 are respectively provided with a sliding rail 12, the sliding rails 12 are perpendicular to the central axis of the ship body 1, and the two sliding rails 12 are symmetrically arranged relative to the mounting notch 11.
The carriage assembly 2 comprises two vertical righting carriages 21. The two vertical righting brackets 21 are slidably mounted on the two slide rails 12, respectively, and a semicircular arc-shaped clasping ring 211 is arranged on the end surface of one side of the vertical righting bracket 21 facing the mounting notch 11. The water upright post 3 is arranged along the vertical direction, and the two vertical righting brackets 21 are configured to move along the slide rails 12 towards each other, so that the clasps 211 on the two vertical righting brackets 21 are opposite to each other and clamp and fix the water upright post 3 in the installation notch 11.
One end of the water upright post 3 is provided with a connecting port 31 for connecting with an offshore wind turbine, the side wall of the water upright post 3 is provided with two rotating shafts 32 arranged along the radial direction, and the two rotating shafts 32 are symmetrically arranged relative to the water upright post 3. The middle parts of the two strip-shaped connecting sections 5 are respectively connected on the two rotating shafts 32 in a rotatable manner, and one ends of the two strip-shaped connecting sections 5 are fixedly connected with the underwater upright post 4. The underwater upright post 4 is parallel to the two strip-shaped connecting sections 5, and a ballast tank 41 is arranged inside the underwater upright post 4.
In the embodiment of the invention, the separately arranged water upright post 3 and the underwater upright post 4 jointly form a floating fan foundation for connecting an offshore fan, before floating, the underwater upright post 4 can freely float on the water surface, and the water upright post 3 can be hoisted to the installation notch 11 of the ship body 1 through a shore hoisting device and is hoisted to between two vertical righting brackets 21 along the vertical direction. After the position adjustment of the water upright post 3 is completed, the two vertical righting supports 21 can be driven to move oppositely along the slide rail 12, the clasping rings 211 on the two vertical righting supports 21 are utilized to oppositely clamp the water upright post 3, and the water upright post 3 is clamped and fixed above the water surface in the mounting notch 11. And the upper fan structures such as a fan tower drum, a machine head and blades of the offshore fan can be connected and installed on the connecting port 31 at the top end of the overwater upright post 3. Then the other end of the ship body 1 can be dragged to move on the water through a conventional tugboat, and the underwater upright post 4 can move along the water upright post 3 and the ship body 1 in a horizontal floating state under the connection of the two strip-shaped connecting sections 5. After the ship body 1 is hauled to a designated floating fan setting position, the other end of the underwater upright post 4 sinks underwater from a floating state by adjusting the weight of the ballast tank 41, one end of the underwater upright post 4 is rotatably connected with the water upright post 3 through two strip-shaped connecting sections 5, and the underwater upright post 4 integrally rotates relative to the water upright post 3 around the rotating shaft 32 while sinking. The underwater upright post 4 can be coaxial with the above-water upright post 3 which is also arranged in a vertical state after sinking to the whole to be in a vertical floating state, and at the moment, the coaxial fixed connection of the above-water upright post 3 and the underwater upright post 4 can be completed by adding connecting parts such as flanges at the end parts of the above-water upright post 3 and the underwater upright post 4, so that the above-water assembly and arrangement of the floating fan foundation are completed. After the integral draft of the overwater stand column 3 and the underwater stand column 4 is adjusted, the anchoring foundation of the underwater seabed is installed, and the mooring line is tensioned, so that the installation of the floating fan foundation can be completed. And finally, the supporting and clamping fixing of the two vertical righting supports 21 on the water upright post 3 are released, and the floating installation work of the next group of floating fan foundations can be circularly carried out.
By adopting the floating fan foundation transportation structure provided by the embodiment of the invention, the floating fan foundation is divided into the water upright post 3 and the underwater upright post 4, and the connection structure consisting of the two strip-shaped connection sections 5 and the rotating shaft 32 is used for rotating connection. A hull 1 for hauling only need through 2 centre gripping of bracket component fixed need set up stand 3 on water, and let stand 4 keep floating and follow the transportation by water on the surface of water, can realize the bulk transport of floating fan basis, reduce the use of large-scale barge. After the underwater upright post is hauled in place, the underwater upright post 4 can sink and rotate to the position coaxial with the above-water upright post 3 under the guidance of the two strip-shaped connecting sections 5 by adjusting the weight of the ballast tank 41 on the underwater upright post 4. After stand 4 rotates to target in place under water, two bar linkage segments 5 then can continue to play the restriction effect to relative position between stand 4 and the stand 3 on water under water, make things convenient for the staff directly to carry out the butt joint on water stand 3 and stand 4 under water, and the connection of stand 3 and offshore wind turbine on water can be accomplished ashore, need not to carry out the hoist and mount construction on water such as floating crane through facilities such as crane ship, effectively reduce the operation degree of difficulty of floating fan basis and offshore wind turbine at marine butt joint installation, improve the efficiency of construction.
Illustratively, in the embodiment of the invention, the length of the above-water upright post 3 is 30 meters, the length of the underwater upright post 4 is 50 meters, the diameters of the above-water upright post 3 and the underwater upright post 4 are both 8.5 meters, and the integral connection has a design draft greater than 100 meters. Correspondingly, in order to ensure the bearing of the above-water upright columns 3 and the underwater upright columns 4, the height of the ship body 1 ranges from 5 meters to 6 meters, the empty ship draft ranges from 0.5 meter to 1 meter, the design draft ranges from 2.5 meters to 3 meters, and the overall width of the ship body 1 is 5-6 times of the diameter of the above-water upright columns 3 and the diameter of the underwater upright columns 4 in the extending direction of the slide rails 12.
Optionally, the other end of the strip-shaped connecting section 5 is provided with a first bolt hole 51, the side wall of the water upright post 3 is provided with a second bolt hole 33 matched with the first bolt hole 51, and the second bolt hole 33 is positioned between the rotating shaft 32 and the connecting port 31. Illustratively, in the embodiment of the present invention, after the underwater column 4 is guided by the two strip-shaped connecting sections 5 to sink and rotate to a position coaxial with the water column 3 by adjusting the weight of the ballast tank 41 on the underwater column 4, the first bolt hole 51 at the other end of the strip-shaped connecting section 5 can be aligned with the second bolt hole 33 on the side edge of the water column 3, and then the constructor can fixedly connect the other end of the two strip-shaped connecting sections 5 with the water column 3 by using bolts. At this moment, the bar-shaped connecting section 5 and the overwater stand column 3 can not relatively rotate after being fixedly connected with each other at two points, so that the restraint effect on the underwater stand column 4 can be further strengthened, the phenomenon that the underwater stand column 4 and the overwater stand column 3 shake due to factors such as sea waves and sea winds during offshore construction is prevented, the butt joint construction of workers is facilitated, the operation difficulty of the floating fan foundation in the offshore butt joint installation is further reduced, and the construction efficiency is improved.
Optionally, the side wall of the water column 3 is provided with a mounting flange 34 protruding in the radial direction, the mounting flange 34 is located between the second bolt hole 33 and the connecting port 31, and the water column 3 is configured such that when the water column is clamped and fixed in the mounting recess 11 by the clasps 211 on the two upright righting brackets 21, the end surface of the mounting flange 34 facing the rotating shaft 32 abuts against the clasps 211. Illustratively, in the embodiment of the present invention, by providing the assembling flange 34 protruding from the sidewall of the water column 3, when the clasping rings 211 on both sides are folded to clamp the water column 3, the upper end surfaces of the clasping rings 211 will simultaneously abut against the end surface of the assembling flange 34 facing the side of the rotating shaft 32, that is, the lower end surface. The clasping ring 211 can support the water upright post 3 in the vertical direction to provide vertical supporting force while realizing the fixation of the clamping in the horizontal direction. The ship body 1 is prevented from shaking due to severe marine environment, so that the overwater stand column 3 is prevented from shaking relative to the clasping ring 211 in the radial direction. The assembly stability of the floating type fan foundation transportation structure in the transportation process is further improved.
Optionally, the vertical righting support 21 is provided with a plurality of clasps 211, the clasps 211 are arranged at intervals along the extending direction of the vertical righting support 21, and the water upright 3 is provided with a plurality of assembling flanges 34 corresponding to the clasps 211 one by one. Illustratively, in the embodiment of the present invention, two clasping rings 211 are arranged on each vertical centering support 21 at intervals, and a plurality of clasping rings 211 are arranged on the vertical centering support 21 at intervals, and are clamped and fixed by two sides of the water column 3 at multiple points, so as to improve the clamping tightness and further improve the assembly stability of the floating wind turbine foundation transport structure during transportation.
Optionally, one end of the vertical centering bracket 21, which is slidably connected to the slide rail 12, is provided with a fixing lug 212, the fixing lug 212 is provided with a third bolt hole 2121, the mounting surface 1a located beside the slide rail 12 is provided with a plurality of fourth bolt holes 13 matching with the third bolt holes 2121, and the plurality of fourth bolt holes 13 are uniformly arranged at intervals along the length direction of the slide rail 12. For example, referring to fig. 8, in a possible implementation of the present invention, after the vertical righting bracket 21 is adjusted in position along the length direction of the sliding rail 12 to achieve clamping and fixing of the water upright 3, the vertical righting bracket 21 may be fixed to the hull 1 by a bolt hole 2121 on the fixing lug 212 and a bolt or a bolt to limit sliding of the vertical righting bracket 21. Simple structure, fixed mounting is convenient, has further improved the assembly stability of floating fan basis transport structure in the transportation.
Optionally, the inner ring end surface of the clasping ring 211 is provided with an elastic washer 2111. Illustratively, in the embodiment of the invention, an elastic gasket 2111, such as a rubber gasket, is arranged on the end face of the inner ring of the clasping ring 211, which is used for contacting with the water upright 3. The static friction between the outer surface of the water upright post 3 and the holding ring 211 can be improved to increase the holding tightness when holding the water upright post 3. Meanwhile, direct contact of a rigid structure is reduced, scratch is reduced, and the service life is prolonged.
Optionally, the other end of the hull 1 has two water guiding surfaces 1b, the water guiding surfaces 1b are arranged at acute angles to a numerical plane where the central axis of the hull 1 is located, and the two water guiding surfaces 1b are symmetrically arranged relative to the central axis of the hull 1. Illustratively, in the embodiment of the invention, two inclined water guide surfaces 1b are symmetrically arranged along the central axis on the other end of the ship body 1, namely, the water facing end surface of the ship body 1 when being hauled, so that the water facing surface is integrally in an isosceles trapezoid structure. The resistance that hull 1 received by the haulage in-process can be effectively reduced, the speed of haulage is improved, further improves whole efficiency of construction.
Optionally, the vertical righting support 21 is a multi-level truss structure. Illustratively, in the embodiment of the present invention, by using a lattice multi-layer beam structure as the vertical righting support 21, on the basis of ensuring the height, span and mechanical strength of the vertical righting support 21, the amount of steel used is effectively reduced, the overall weight is light, and the movement adjustment is convenient.
Optionally, the clasping ring 211 is connected with the vertical righting bracket 21 by welding. Illustratively, in the embodiment of the present invention, the steel structure of the clasping ring 211, which is semicircular, is fixedly connected to the vertical righting bracket 21 by a steel structure or a connecting arm through a welding connection. Can cut the dismantlement, weld again according to the stand 3 on water of different diameters to be applicable to not unidimensional floating fan basis, simple structure connects fastening and process simple.
Fig. 10 is a flowchart of a construction method according to an embodiment of the present invention. As shown in fig. 10, an embodiment of the present invention further provides a construction method for assembling and constructing the floating wind turbine foundation transport structure shown in fig. 1 to 9, where the construction method includes the following steps:
and S1, connecting the above-water upright post 3 and the underwater upright post 4 by using two strip-shaped connecting sections 5.
S2, the two clasping rings 211 of the two vertical righting brackets 21 are used to clamp and fix the above-water upright post 3 in the installation notch 11 along the vertical direction, and the underwater upright post 4 is in a horizontal floating state of naturally suspending on the water surface, and the ship body 1 is towed to transport the above-water upright post 3 and the underwater upright post 4 on the water.
Illustratively, in this step, the underwater column 4 can float freely on the water surface before the floating, and the above-water column 3 can be lifted into the installation recess 11 of the hull 1 by a shoreside lifting device and lifted vertically between the two vertical righting supports 21. After the position adjustment of the water upright post 3 is completed, the two vertical righting supports 21 can be driven to move oppositely along the slide rail 12, the clasping rings 211 on the two vertical righting supports 21 are utilized to oppositely clamp the water upright post 3, and the water upright post 3 is clamped and fixed above the water surface in the mounting notch 11. Then the other end of the ship body 1 can be dragged to move on the water through a conventional tugboat, and the underwater upright post 4 can move along the water upright post 3 and the ship body 1 in a horizontal floating state under the connection of the two strip-shaped connecting sections 5.
S3, after the ship body 1 reaches the designated position, adjusting the weight of the ballast tank 41 to make the other end of the underwater upright post 4 sink and drive the two strip-shaped connecting sections 5 to rotate around the rotating shaft 32 until the underwater upright post 4 is in a vertical floating state that the whole body is coaxial with the above-water upright post 3.
Illustratively, in this step, after the ship hull 1 is hauled to a designated floating fan setting position, the other end of the underwater column 4 is sunk underwater from a floating state by adjusting the weight of the ballast tank 41, and one end of the underwater column 4 is rotatably connected to the above-water column 3 through two strip-shaped connecting sections 5, and the underwater column 4 is integrally rotated with respect to the above-water column 3 about the rotating shaft 32 while sinking. The underwater upright post 4 is coaxial with the water upright post 3 which is also arranged in a vertical state after sinking to the whole to be in a vertical floating state.
And S4, fixedly connecting one end of the underwater upright post 4 with the other end of the overwater upright post 3, adjusting the draft of the overwater upright post 3 and the underwater upright post 4, anchoring with the seabed and tensioning the mooring line.
Exemplarily, in this step, the coaxial fixed connection of the above-water upright column 3 and the underwater upright column 4 can be completed by adding a connecting component such as a flange at the end of the above-water upright column 3 and the underwater upright column 4, so as to complete the above-water assembly of the floating fan foundation. After the integral draft of the overwater stand column 3 and the underwater stand column 4 is adjusted, the anchoring foundation n of the underwater seabed m is installed, and the mooring line o is tensioned, so that the installation of the floating fan foundation can be completed.
And S5, adjusting the relative positions of the two vertical righting brackets 21 along the slide rail 12, and releasing the clamping and fixing of the clasping ring 211 on the water upright post 3.
In this step, for example, the two vertical righting brackets 21 are adjusted reversely on the slide rail 12, and the supporting and clamping fixation of the two vertical righting brackets 21 on the above-water column 3 is released, so that the floating installation work of the next group of floating fan foundations can be performed circularly.
By adopting the construction method provided by the embodiment of the invention, the floating fan foundation is divided into the water upright post 3 and the underwater upright post 4, and the connection structure consisting of the two strip-shaped connection sections 5 and the rotating shaft 32 is utilized for rotary connection. A hull 1 for hauling only need through 2 centre gripping of bracket component fixed need set up stand 3 on water, and let stand 4 keep floating and follow the transportation by water on the surface of water, can realize the bulk transport of floating fan basis, reduce the use of large-scale barge. After the underwater upright post is hauled in place, the underwater upright post 4 can sink and rotate to the position coaxial with the above-water upright post 3 under the guidance of the two strip-shaped connecting sections 5 by adjusting the weight of the ballast tank 41 on the underwater upright post 4. After stand 4 rotates to target in place under water, two bar linkage segments 5 then can continue to play the restriction effect to relative position between stand 4 and the stand 3 on water under water, make things convenient for the staff directly to carry out the butt joint on water stand 3 and stand 4 under water, and the connection of stand 3 and offshore wind turbine on water can be accomplished ashore, need not to carry out the hoist and mount construction on water such as floating crane through facilities such as crane ship, effectively reduce the operation degree of difficulty of floating fan basis and offshore wind turbine at marine butt joint installation, improve the efficiency of construction.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and is extremely equivalent, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.
The invention is not to be considered as limited to the particular embodiments shown and described, but is to be understood that various modifications, equivalents, improvements and the like can be made without departing from the spirit and scope of the invention.
Claims (10)
1. A floating wind turbine foundation transport structure, comprising: a ship body (1), a bracket component (2), an above-water upright post (3), an under-water upright post (4) and two strip-shaped connecting sections (5),
the ship body (1) is provided with a mounting surface (1a), one end of the ship body (1) is provided with a mounting notch (11) arranged along the central axis direction of the ship body (1), the mounting surfaces (1a) at two ends of the mounting notch (11) are respectively provided with a sliding rail (12), the sliding rails (12) are vertical to the central axis of the ship body (1), and the two sliding rails (12) are symmetrically arranged relative to the mounting notch (11);
the support assembly (2) comprises two vertical righting supports (21), the two vertical righting supports (21) are respectively slidably mounted on the two slide rails (12), a semicircular arc-shaped clasping ring (211) is arranged on the end face of one side, facing the mounting notch (11), of each vertical righting support (21), the water upright post (3) is arranged in the vertical direction, and the two vertical righting supports (21) are configured to be capable of moving in opposite directions along the slide rails (12) so that the clasping rings (211) on the two vertical righting supports (21) are oppositely combined to clamp and fix the water upright post (3) in the mounting notch (11);
the one end of stand on water (3) has connector (31) that is used for being connected with offshore wind turbine, have two pivot (32) along radial setting on the lateral wall of stand on water (3), two pivot (32) for stand on water (3) symmetrical arrangement, the middle part of two bar linkage segments (5) is rotatable respectively connect in two on pivot (32), the one end of two bar linkage segments (5) with stand (4) fixed connection under water, stand (4) under water with two bar linkage segments (5) are parallel, stand (4) inside has ballast tank (41) under water.
2. The floating wind turbine foundation transport structure of claim 1, characterized in that the other end of the strip-shaped connecting section (5) is provided with a first bolt hole (51), the side wall of the water upright (3) is provided with a second bolt hole (33) matched with the first bolt hole (51), and the second bolt hole (33) is positioned between the rotating shaft (32) and the connecting port (31).
3. The floating wind turbine foundation transport structure of claim 2, wherein the side wall of the water column (3) is provided with a mounting flange (34) which is arranged in a protruding manner along the radial direction, the mounting flange (34) is positioned between the second bolt hole (33) and the connecting port (31), and the water column (3) is configured such that when the clasping ring (211) on the two upright righting brackets (21) is clamped and fixed in the mounting notch (11), the end surface of the mounting flange (34) facing the rotating shaft (32) abuts against the clasping ring (211).
4. The floating wind turbine foundation transport structure of claim 3, wherein the vertical righting support (21) is provided with a plurality of the clasps (211), the clasps (211) are arranged at intervals along the extending direction of the vertical righting support (21), and the water upright (3) is provided with a plurality of the assembling flanges (34) corresponding to the clasps (211) in a one-to-one manner.
5. The floating wind turbine foundation transportation structure of claim 1, wherein one end of the vertical righting bracket (21) in sliding connection with the sliding rail (12) is provided with a fixing lug (212), the fixing lug (212) is provided with a third bolt hole (2121), the mounting surface (1a) beside the sliding rail (12) is provided with a plurality of fourth bolt holes (13) matched with the third bolt holes (2121), and the plurality of fourth bolt holes (13) are uniformly arranged at intervals along the length direction of the sliding rail (12).
6. The floating wind turbine foundation transport structure of claim 1, wherein the inner ring end face of the clasping ring (211) is provided with an elastic gasket (2111).
7. The floating wind turbine foundation transport structure of any one of claims 1 to 6, characterized in that the other end of the hull (1) has two water guiding surfaces (1b), the water guiding surfaces (1b) are arranged at an acute angle to a numerical plane in which the central axis of the hull (1) is located, and the two water guiding surfaces (1b) are arranged symmetrically with respect to the central axis of the hull (1).
8. The floating wind turbine foundation transport structure of any one of claims 1 to 6, characterized in that the vertical righting support (21) is a multi-layer truss structure.
9. The floating wind turbine foundation transport structure of claim 8, wherein the clasping ring (211) is connected with the vertical righting support (21) by welding.
10. A construction method, wherein the construction method is implemented based on the floating wind turbine foundation transport structure of any one of claims 1 to 9, and the construction method comprises:
the two strip-shaped connecting sections (5) are used for connecting the above-water upright post (3) and the underwater upright post (4);
the two clasping rings (211) on the two vertical righting supports (21) are closed to clamp and fix the above-water upright post (3) in the mounting notch (11) along the vertical direction, the underwater upright post (4) is in a horizontal floating state of naturally suspending on the water surface, and the ship body (1) is towed to carry out the above-water transportation of the above-water upright post (3) and the underwater upright post (4);
after the ship body (1) reaches a designated position, adjusting the weight of the ballast tank (41), so that the other end of the underwater upright post (4) sinks and drives the two strip-shaped connecting sections (5) to rotate around the rotating shaft (32) until the underwater upright post (4) is in a vertical floating state that the whole body is coaxial with the water upright post (3);
fixedly connecting one end of the underwater upright post (4) with the other end of the above-water upright post (3), adjusting the draft of the above-water upright post (3) and the underwater upright post (4), anchoring with the seabed and tensioning a mooring line;
adjusting the relative positions of the two vertical righting supports (21) along the slide rail (12), and releasing the clamping fixation of the clasping ring (211) on the water upright post (3).
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| CN202210441853.3A CN114872846A (en) | 2022-04-25 | 2022-04-25 | Floating type fan foundation transportation structure and construction method thereof |
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| CN202210441853.3A CN114872846A (en) | 2022-04-25 | 2022-04-25 | Floating type fan foundation transportation structure and construction method thereof |
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Application publication date: 20220809 |