CN116238664A - Floating type offshore wind power platform launching method - Google Patents
Floating type offshore wind power platform launching method Download PDFInfo
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- CN116238664A CN116238664A CN202310530096.1A CN202310530096A CN116238664A CN 116238664 A CN116238664 A CN 116238664A CN 202310530096 A CN202310530096 A CN 202310530096A CN 116238664 A CN116238664 A CN 116238664A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 claims abstract description 13
- 230000002787 reinforcement Effects 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000002407 reforming Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000032258 transport Effects 0.000 abstract 1
- 239000002023 wood Substances 0.000 description 3
- 241001669679 Eleotris Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 239000007924 injection Substances 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
- 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
- B63B77/10—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 specially adapted for electric power plants, e.g. wind turbines or tidal turbine generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C3/00—Launching or hauling-out by landborne slipways; Slipways
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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
Abstract
The invention provides a floating offshore wind power platform launching method, which is constructed in a site near a wharf, a semi-submersible barge stopped at the side of a wharf is transported by a floating offshore wind power platform through a hydraulic trolley after the construction is completed, the semi-submersible barge transports the floating offshore wind power platform to a water area with proper water depth to be submerged, floats the floating offshore wind power platform to the water surface, and finishes platform launching.
Description
Technical Field
The invention relates to the technical field of offshore wind power platforms, in particular to a floating offshore wind power platform launching method.
Background
The floating type offshore wind power platform works in deep open sea and has the main function of firmly fixing an offshore wind power generator on the sea surface, and the wind power generator utilizes a high-quality wind source in the deep open sea to generate power. However, in order to face severe environments such as sudden ocean currents, great wind waves, and vibration, windward resistance, etc. generated during operation of wind turbines, the floating offshore wind power platform is designed in the form of a triangular column having a large volume (total length of about 72 meters, a profile width of about 80 meters, a height of about 34 meters) and a tonnage (total weight of about 7600 tons, wherein the structural dead weight is about 4100 tons, and the fixed ballast is about 3500 tons), so that safe operation in the deep ocean can be ensured.
There are two theoretical modes of floating offshore wind power platform launching, firstly, build in the dock, open dock gate water injection after the build is accomplished, float the floating offshore wind power platform and drag out the dock after floating. Because the floating type offshore wind power platform has long construction period (about one and a half years), the number of domestic large-scale docks is small, the period cost of occupying the docks is high, and the construction cost of the floating type offshore wind power platform can be greatly increased. Secondly, constructing a site near the deepwater wharf, and hoisting the site with ultra-large hoisting equipment after the construction is completed. Because the ultra-large hoisting equipment has high leasing cost, and the hoisting process has a plurality of conditions affecting the safety, uncontrollable factors are large, and the method is a serious challenge for the construction cost and the safety. The invention aims to solve the problems of large volume, heavy tonnage and complex structure of the platform safety launching method, save the cost of platform construction and improve the construction safety.
Disclosure of Invention
The invention aims to provide a floating offshore wind power platform launching method for solving the technical problems.
In order to solve the technical problems, the invention adopts the following technical scheme:
a floating offshore wind power platform launching method comprises the following steps:
s1, before a platform is built, opening and flattening platform pier distribution calculation is performed according to the main weight distribution condition of the platform, and the number and the positions of the pier distribution are determined, so that a ship moving trolley can enter the bottom of the platform during the construction and subsequent transportation of the platform;
s2, after the platform is built, analyzing the bearing capacity condition of each part of the structure of the platform, carrying out stress calculation and analysis of the structure of the platform, determining the specific use number and arrangement positions of the ship moving trolleys at the wharf building position, synchronously arranging wharf tracks, and carrying out structural reinforcement on the positions of the ship moving trolleys arranged on the platform, so that the platform is ensured not to deform during moving and transportation;
s3, reconstructing the semi-submersible barge, and performing widening and buoyancy increasing reconstruction on the basis of the existing semi-submersible barge;
s4, after the modification of the semi-submersible barge is finished, mooring and berthing on the wharf, and according to the arrangement condition of a ship moving trolley and a wharf rail at the wharf building position, extending and arranging a semi-submersible barge rail on the semi-submersible barge corresponding to the wharf rail, and fixing the semi-submersible barge to prepare for the subsequent platform to move the upper semi-submersible barge;
s5, controlling the ship moving trolley to advance to the semi-submersible barge along the arranged track until the whole platform completely ascends the semi-submersible barge, and fixing the ship moving trolley and the semi-submersible barge to prevent movement;
s6: the semi-submersible barge is driven to a designated water area to submerge, so that the platform floats on the water surface, and the tug drags the platform to the designated sea area.
Further, in step S5, the following steps are included:
s51, checking and confirming the integrity of the platform, and cleaning sundries around the platform and obstacles along the moving line;
s52, preparing, namely dynamically adjusting the draft of the semi-submersible barge according to the tide condition, so that the semi-submersible barge deck surface semi-submersible barge track is always kept on the same plane with the wharf track;
s53, controlling a ship moving trolley participating in ship moving, and synchronously lifting the platform until the platform leaves the pier surface; the ship moving trolley is controlled to move to an open place, and after the ship moving trolley moves to the open place, the platform is controlled to descend, and the gravity center in the transportation process is lowered;
s54, controlling the ship moving trolley to start to advance to the semi-submersible barge along the arranged track;
s55, when the ship moving trolley bearing platform starts to move to the semi-submersible barge, increasing the water discharge of a ballast tank of the semi-submersible barge, and always ensuring that the buoyancy of the semi-submersible barge is equal to the sum of the weights of the ship moving trolley and the semi-submersible barge on the platform so as to ensure that a semi-submersible barge track of the semi-submersible barge is always kept on the same plane with a wharf track, and the ship moving trolley bearing platform slowly advances towards the semi-submersible barge until the whole platform completely climbs the semi-submersible barge;
s56, fixing the ship moving trolley with the semi-submersible barge to prevent movement.
Further, in step S3, the following steps are included:
s31, selecting a semi-submersible barge with the length, the floating capacity and the drainage meeting the requirements;
s32, widening and reforming the semi-submersible barge, and forming a semi-submersible barge widening structure on the upper side and the lower side of the semi-submersible barge, which are close to the wharf;
s33, arranging a proper buoyancy tank at the lower part of the widened structure of the semi-submersible barge so as to increase the buoyancy and stability of the reformed semi-submersible barge and improve the safety.
Further, in step S1, the platform cloth piers are cement piers, and a loose pier, a steel pad and a wedge square wood rubber cushion layer are arranged between each cement pier and the platform bottom plate from bottom to top.
In step S2, structural reinforcement is formed by reinforcing T beams in the platform bottom plate corresponding to the ship moving trolley, and sleepers are arranged between the ship moving trolley and the platform bottom plate.
Further, after the platform finishes the step of launching, the semi-submersible barge is opened back to the original wharf, the ship moving trolley is opened back to the shore, and the track of the ship moving trolley is withdrawn to the shore.
Further, the ship moving trolley is a hydraulic ship moving trolley.
Compared with the prior art, the invention has the following beneficial effects:
the invention is built in a site near a wharf, after the building is completed, the floating type offshore wind power platform is transported by the hydraulic trolley to be stopped at a semi-submersible barge beside the wharf, the semi-submersible barge is used for transporting the floating type offshore wind power platform to a water area with proper water depth for submerging, and the floating type offshore wind power platform is floated on the water surface to complete the platform submerging, so that the invention has the advantages of low cost and high safety.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a pier arrangement before construction of an offshore wind platform according to the present invention;
FIG. 2 is a schematic view of a cement pier according to the present invention;
FIG. 3 is a schematic view of a spar T-beam of the offshore wind platform reinforcement of the present invention;
FIG. 4 is a schematic view of a spar T-beam of the offshore wind platform reinforcement of the present invention;
FIG. 5 is a schematic diagram of a semi-submersible refutation modification of the present invention;
FIG. 6 is a schematic side view of the semi-submersible reconstruction of the present invention;
FIG. 7 is a schematic illustration of the alignment of the semi-submersible barge with the quay in accordance with the present invention;
FIG. 8 is a schematic representation of the transfer of an offshore wind platform to a semi-submersible barge in accordance with the present invention;
FIG. 9 is a schematic view of a semi-submersible barge return quay according to the present invention.
In the figure: 1. platform, platform bottom plate, platform cloth pier, 31, cement pier, 32, loose pier, 33, steel pad, 34, wedge square timber rubber cushion, 4, reinforced T beam, 5, wharf rail, 6, ship moving trolley, 7, sleeper, 8, semi-submerged barge, 81, semi-submerged barge widening structure, 82, buoyancy tank, 9, semi-submerged barge rail.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
A floating offshore wind power platform launching method comprises the following steps:
s1, before construction of a platform 1, opening and flattening the platform cloth piers 3 according to the main weight distribution condition of the platform 1 for calculation, and determining the number and positions of the cloth piers, so that a ship moving trolley 6 can enter the bottom of the platform 1 during construction and subsequent transportation of the platform 1; the platform cloth piers 3 are cement piers 31, and loose piers 32, steel pads 33 and wedge-wood square-wood rubber cushion 34 are arranged between each cement pier 31 and the platform bottom plate 2 from bottom to top.
S2, after the platform 1 is built, analyzing the bearing capacity condition of the structures of all parts of the platform 1, carrying out stress calculation and analysis on the structures of the platform 1, determining the specific use number and arrangement positions of the ship moving trolleys 6 at the wharf building position, synchronously arranging wharf rails 5, and carrying out structural reinforcement on the positions of the platform 1 where the ship moving trolleys 6 are arranged, so that the platform 1 is ensured not to deform during moving and transportation; structural reinforcement is formed by the reinforcement T beam 4 at the position of the platform bottom plate 2 corresponding to the ship moving trolley 6, and a sleeper 7 is arranged between the ship moving trolley 6 and the platform bottom plate 2 in a cushioning manner.
S3, reconstructing the semi-submersible barge 8, and performing widening and buoyancy increasing reconstruction on the basis of the existing semi-submersible barge 8;
s31, selecting a semi-submersible barge with the length, the floating capacity and the drainage meeting the requirements;
s32, widening and reforming the semi-submersible barge, and forming a semi-submersible barge widening structure 81 on the upper side and the lower side of the semi-submersible barge 8 close to the wharf;
s33, arranging a proper buoyancy tank 82 at the lower part of the widened structure 81 of the semi-submersible barge so as to increase the buoyancy and stability of the reformed semi-submersible barge and improve the safety.
S4, after the modification of the semi-submersible barge 8 is finished, mooring and berthing on the wharf, and according to the arrangement condition of the ship moving trolley 6 and the wharf rail 5 at the wharf building position, extending and arranging the semi-submersible barge rail 9 on the semi-submersible barge 8 corresponding to the wharf rail 5, and fixing the semi-submersible barge 8, so as to prepare for the follow-up platform 1 to move the upper semi-submersible barge 8;
s5, controlling the ship moving trolley 6 to advance on the semi-submersible barge 8 along the arranged track until the whole platform completely climbs on the semi-submersible barge 8, and fixing the ship moving trolley 6 and the semi-submersible barge 8 to prevent movement;
s51, checking and confirming the integrity of the platform 1, and cleaning sundries around the platform and obstacles along the moving line;
s52, preparing, namely dynamically adjusting the draft of the semi-submersible barge 8 according to the tide situation, so that the semi-submersible barge track 9 on the deck surface of the semi-submersible barge 8 is always kept on the same plane with the wharf track 5;
s53, controlling a ship moving trolley 6 participating in ship moving, and synchronously lifting the platform 1 until the platform leaves the pier surface; the ship moving trolley 6 is controlled to move to an open place, and after the ship moving trolley 6 is controlled to move to the open place, the platform is controlled to descend, and the gravity center in the transportation process is lowered;
s54, controlling the ship moving trolley 6 to start to advance on the semi-submersible barge 8 along the arranged track;
s55, when the carrying platform of the ship moving trolley 6 starts to move onto the semi-submersible barge 8, the ballast tank of the semi-submersible barge 8 is increased to drain, the buoyancy of the semi-submersible barge 8 is always ensured to be equal to the sum of the gravity of the ship moving trolley 6 and the gravity of the semi-submersible barge 8 on the platform 1, so that the semi-submersible barge track 9 of the semi-submersible barge 8 is ensured to be kept on the same plane with the wharf track 5 all the time, and the ship moving trolley 6 carries the platform 1 to slowly advance towards the semi-submersible barge 8 until the whole platform 1 completely climbs onto the semi-submersible barge 8;
s56, fixing the ship moving trolley 6 and the semi-submersible barge 8 to prevent movement.
S6: the semi-submersible barge 8 is driven to the appointed water area to submerge, so that the platform 1 floats on the water surface, and the tug drags the platform 1 to the appointed sea area. After the platform 1 finishes the step of launching, the semi-submersible barge 8 is started back to the original wharf, the ship moving trolley 6 is started back to the shore, and the track of the ship moving trolley 6 is retracted to the shore.
Specifically, the ship moving trolley is a hydraulic ship moving trolley.
The invention is built in a site near a wharf, after the building is completed, the floating type offshore wind power platform is transported by the hydraulic trolley to be stopped at a semi-submersible barge beside the wharf, the semi-submersible barge is used for transporting the floating type offshore wind power platform to a water area with proper water depth for submerging, and the floating type offshore wind power platform is floated on the water surface to complete the platform submerging, so that the invention has the advantages of low cost and high safety.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The floating offshore wind power platform launching method is characterized by comprising the following steps of:
s1, before construction of a platform (1), opening and flattening platform piers (3) according to the main weight distribution condition of the drawing accounting platform (1) to calculate, and determining the number and positions of the piers, so that a ship moving trolley (6) can enter the bottom of the platform (1) during construction and subsequent transportation of the platform (1);
s2, after the platform (1) is built, analyzing the bearing capacity condition of each part of the platform (1), carrying out structural stress calculation and analysis of the platform (1), determining the specific use quantity and arrangement positions of the ship moving trolleys (6) at the wharf building position, synchronously arranging wharf tracks (5), and carrying out structural reinforcement on the positions of the platform (1) where the ship moving trolleys (6) are arranged, so that the platform (1) is ensured not to deform during moving and transportation;
s3, modifying the semi-submersible barge (8), and performing widening and buoyancy increasing modification on the basis of the existing semi-submersible barge (8);
s4, after the modification of the semi-submersible barge (8) is finished, mooring and berthing on the wharf, and according to the arrangement condition of the ship moving trolley (6) and the wharf rail (5) at the wharf building position, arranging the semi-submersible barge rail (9) on the semi-submersible barge (8) in an extending manner corresponding to the wharf rail (5), and fixing the semi-submersible barge to prepare for the subsequent platform (1) to move the upper semi-submersible barge (8);
s5, controlling the ship moving trolley (6) to advance on the semi-submersible barge (8) along the arranged track until the whole platform is completely lifted on the semi-submersible barge (8), and fixing the ship moving trolley (6) and the semi-submersible barge (8) to prevent movement;
s6: the semi-submersible barge (8) is driven to the appointed water area to submerge, so that the platform (1) floats on the water surface, and the tug drags the platform (1) to the appointed sea area.
2. The method for launching a floating offshore wind farm according to claim 1, wherein in step S5, the method comprises the steps of:
s51, checking and confirming the integrity of the platform (1), and cleaning sundries around the platform and obstacles along the moving line;
s52, preparing, namely dynamically adjusting the draft of the semi-submersible barge (8) according to the tide situation, so that a semi-submersible barge track (9) on the deck surface of the semi-submersible barge (8) is always kept on the same plane with a wharf track (5);
s53, controlling a ship moving trolley (6) participating in ship moving, and synchronously lifting the platform (1) until the platform leaves the pier surface; the ship moving trolley (6) is controlled to move to an open place, and after the ship moving trolley (6) is controlled to move to the open place, the platform is controlled to descend, and the gravity center in the transportation process is lowered;
s54, controlling the ship moving trolley (6) to start to advance onto the semi-submersible barge (8) along the arranged track;
s55, when the carrier platform of the ship moving trolley (6) starts to move onto the semi-submersible barge (8), the ballast tank of the semi-submersible barge (8) is increased to drain, the buoyancy of the semi-submersible barge (8) is always ensured to be equal to the sum of the gravity of the ship moving trolley (6) and the gravity of the semi-submersible barge (8) on the platform (1), so that the semi-submersible barge track (9) of the semi-submersible barge (8) is ensured to be kept on the same plane with the wharf track (5) all the time, and the ship moving trolley (6) carries the platform (1) to slowly advance towards the semi-submersible barge (8) until the whole platform (1) completely climbs onto the semi-submersible barge (8);
s56, fixing the ship moving trolley (6) and the semi-submersible barge (8) to prevent movement.
3. A method for launching a floating offshore wind farm according to claim 2, wherein in step S3, the method comprises the steps of:
s31, selecting a semi-submersible barge with the length, the floating capacity and the drainage meeting the requirements;
s32, widening and reforming the semi-submersible barge, and forming a semi-submersible barge widening structure (81) on the upper side and the lower side of the semi-submersible barge (8) close to the wharf;
s33, arranging a proper buoyancy tank (82) at the lower part of the widening structure (81) of the semi-submersible barge so as to increase the buoyancy and stability of the reformed semi-submersible barge and improve the safety.
4. A floating offshore wind power platform launching method according to claim 3, wherein in step S1, the platform cloth piers (3) are cement piers (31), and a movable pier (32), a steel pad (33) and a wedge square timber rubber pad (34) are arranged between each cement pier (31) and the platform bottom plate (2) from bottom to top.
5. The method for launching a floating offshore wind power platform according to claim 4, wherein in the step S2, structural reinforcement is formed by reinforcing T beams (4) at positions corresponding to ship moving trolleys (6) on a platform bottom plate (2), and sleepers (7) are arranged between the ship moving trolleys (6) and the platform bottom plate (2).
6. The method for launching a floating offshore wind power platform according to claim 1, wherein after the platform (1) finishes the launching step, the semi-submersible barge (8) is opened back to the original quay, the ship moving trolley (6) is opened back to the shore, and the track of the ship moving trolley (6) is withdrawn back to the shore.
7. The method for launching a floating offshore wind farm according to claim 6, wherein the vessel transfer cart is a hydraulic vessel transfer cart.
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| CN108502124A (en) * | 2018-04-26 | 2018-09-07 | 太重（天津）滨海重型机械有限公司 | Ocean platform launching gear and method |
| CN111114715A (en) * | 2020-03-05 | 2020-05-08 | 招商局邮轮制造有限公司 | Launching method of offshore platform on building berth by utilizing 38000t semi-submersible barge |
| WO2021240132A1 (en) * | 2020-05-29 | 2021-12-02 | TRIVANE Limited | Floating vessel with wind turbine tower mount |
| CN113120188A (en) * | 2021-05-20 | 2021-07-16 | 中船黄埔文冲船舶有限公司 | Refuting method of launching member |
| CN113898536A (en) * | 2021-09-29 | 2022-01-07 | 广东中远海运重工有限公司 | Wind power jacket integral roll-mounting and refuting device and method |
| CN217198567U (en) * | 2022-03-02 | 2022-08-16 | 三峡珠江发电有限公司 | Floating type offshore wind power platform rolling and loading transfer system |
| CN116062127A (en) * | 2023-02-20 | 2023-05-05 | 江南造船(集团)有限责任公司 | Ship-moving launching supporting system |
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Application publication date: 20230609 |