CN115107939A - Offshore floating type wind power combined semi-submersible platform foundation and installation method thereof - Google Patents
Offshore floating type wind power combined semi-submersible platform foundation and installation method thereof Download PDFInfo
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- CN115107939A CN115107939A CN202110307430.8A CN202110307430A CN115107939A CN 115107939 A CN115107939 A CN 115107939A CN 202110307430 A CN202110307430 A CN 202110307430A CN 115107939 A CN115107939 A CN 115107939A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000009434 installation Methods 0.000 title abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 241000124872 Grus grus Species 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/30—Moving or transporting modules or hull blocks to assembly sites, e.g. by rolling, lifting or floating
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/22—Foundations specially adapted for wind motors
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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
- B63B2035/442—Spar-type semi-submersible structures, i.e. shaped as single slender, e.g. substantially cylindrical or trussed vertical bodies
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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
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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Abstract
The invention discloses an offshore floating wind power combined semi-submersible platform foundation and an installation method thereof, wherein the foundation comprises at least three upright columns, each upright column is enclosed into a polygonal structure, adjacent upright columns are connected through an upper support and a lower support, each upright column consists of an upper column body and a lower column body, the upper column body and the lower column body are coaxially arranged, a support block is arranged at the upper part of each upper column body, the upper support is placed on the support block, a lower support connecting part is arranged at the lower part of each upper column body, and the lower support connecting part is connected with the lower support; the upright post, the upper support and the lower support are manufactured in a common place, transported to a wharf of a wind power plant, and lifted to the sea by a common crane to complete final assembly. The offshore floating type wind power combined semi-submersible platform foundation and the installation method thereof greatly reduce the requirements of a manufacturing site and a combined site and provide possibility for large-scale off-site construction.
Description
Technical Field
The invention relates to an offshore wind power foundation and an installation method thereof, in particular to an offshore floating type wind power semi-submersible platform foundation and an installation method thereof.
Background
The high power and gradual deep hydration of offshore wind power are future development trends, floating wind power gradually becomes the mainstream of offshore wind power, and the semi-submersible mode is the most reliable basic form of floating wind power. However, the power of the fan is larger and larger, and the size of the semi-submersible is required to be increased continuously in order to resist wind tilting moment, so that extremely high requirements are provided for the final constructed field, and either a large dock or a heavy-load track is matched with the semi-submersible to be launched into water, which are both scarce resources, and the large-scale rapid development of floating wind power is greatly limited.
Disclosure of Invention
The invention aims to solve the technical problem of realizing the manufacturing and launching of a semi-submersible platform under the condition of no large dock and no slideway.
In order to solve the technical problem, the offshore floating type wind power combined semi-submersible platform foundation comprises at least three upright columns, wherein the upright columns are enclosed to form a polygonal structure, adjacent upright columns are connected through upper supports and lower supports, each upright column comprises an upper column body and a lower column body, the upper column body and the lower column body are coaxially arranged, a supporting block is arranged at the upper part of the upper column body, the upper supports are placed on the supporting blocks, lower support connecting parts are arranged at the lower parts of the upper column bodies, and the lower support connecting parts are connected with the lower supports.
In the above technical scheme, the front end of the supporting block is provided with a convex block, and the upper support is placed on the convex block.
In the technical scheme, the front end of the lower support connecting part exceeds the outer edge of the lower cylinder, a supporting plate is arranged on the lower side of the front end of the lower support connecting part, the supporting plate is fixed at the front end of the lower support connecting part through a ring buckle, and the lower support is placed on the supporting plate.
In the technical scheme, the upright posts are enclosed into a triangular or quadrilateral structure.
In the above technical scheme, the lower support connecting part is arranged on the upper top surface of the lower column body.
In the above technical solution, the upper support and the lower support are both strip beams.
In the above technical scheme, the supporting plate is provided with a hollow, and the hollow is arranged at the joint of the lower support connecting portion and the lower support.
The invention relates to an installation method of an offshore floating type wind power combined semi-submersible platform foundation, which is characterized in that an upper support, a lower support and an upright post are built in a production place, two support blocks are welded on the same horizontal line of the upper part of the upright post, an included angle of more than 60 degrees is formed between the support blocks, two lower support connecting parts are welded on the same horizontal line of the lower part of the upright post, the included angle between the lower support connecting parts is consistent with the included angle between the support blocks, and the support blocks and the lower support connecting parts are vertically corresponding; the front end of the lower support connecting part is fixed with a horizontal supporting plate through a buckle; the method comprises the following steps of (1) transporting the constructed upright columns, an upper support and a lower support to a wharf near a wind field through a transport ship, putting the two upright columns into water at the wharf by means of a crane or a crawler crane, controlling the relative distance between the upright columns, placing two ends of the lower support on supporting plates of the two upright columns and welding and fixing the supporting plates with lower support connecting parts, and placing two ends of the upper support on supporting blocks and welding and fixing the upper support with the upright columns; and then, putting an upright column into water by a crane or a crawler crane, dragging the upright column to a corresponding position by a dragging wheel, placing two ends of the lower support on corresponding supporting plates of the two upright columns and welding and fixing the lower support with the lower support connecting part, placing two ends of the upper support on corresponding supporting blocks and welding and fixing the upper support with the upright columns, and repeating the steps to enable the upright columns to form a polygonal structure.
In the method, when the number of the upright columns is even, every two upright columns can be connected, and then the connected upright columns are connected through the upper support and the lower support.
The scheme provides a concept of the combined semi-submersible platform, only a medium-sized module is required to be built in a production field by utilizing the characteristics of combination, docks and docks are not required to be occupied, and the manufacturing can be completed in an area with low manufacturing cost. After the assembly to be assembled is manufactured in a production field, a large number of the assembly to be assembled can be conveyed to a wharf close to an offshore wind power plant through a common transport ship, and the on-site wharf can complete semi-submersible combination only by a crane with common lifting capacity without a dock/a shipway. Through the implementation of the scheme, the large-scale construction of the offshore semi-submersible floating foundation facing the high-power wind turbine becomes possible.
Drawings
FIG. 1 is a schematic diagram of a three-column combined semi-submersible corrosion platform foundation structure.
FIG. 2 is a schematic diagram of a foundation structure of a four-column combined semi-submersible corrosion platform.
Fig. 3 is a schematic view of a column structure in which the assembly auxiliary is disposed at an angle of 60 degrees.
Detailed Description
Referring to fig. 1 to 3, the offshore floating wind power combined semi-submersible platform foundation mainly comprises upright columns 1 and a supporting structure, and the preferable scheme of the combined semi-submersible platform foundation is four-column type or three-column type. Referring to fig. 2, the four-column type is mainly composed of four columns 1, four lower supports 2, and four upper supports 3, and referring to fig. 1, the three-column type is mainly composed of three columns 1, three lower supports 2, and three upper supports 3. The upright column 1, the lower support 2, the upper support 3 and the assembly auxiliary parts are built at a manufacturing site, the occupied area of the components is small, the transportation is convenient, and the upright column can be built in an area with low labor cost.
The upright post 1 is composed of an upper post body 11 and a lower post body 12, wherein the cross section of the upper post body can be circular or polygonal, and the cross section of the lower post body can be circular or polygonal. The cross section area of the upper column body is smaller than that of the lower column body, the upper column body 11 is welded and fixed on the lower column body 12, the upper column body and the lower column body are coaxially arranged, and the upper column body 11 and the lower column body 12 are preferably of cylindrical structures.
The upper support 3 is a strip-shaped structural beam, and the cross section of the upper support is circular or polygonal. For ease of construction, the upper support 3 typically uses a bar-shaped structural beam of rectangular cross-section.
The lower support 2 is a strip-shaped structural beam, and the cross section of the lower support is circular or polygonal. For ease of construction, the lower support 2 typically uses a bar-shaped structural beam of rectangular cross-section. Before combination, the lower support 2 needs to be connected and fixed with the upright post 1 through a lower support connecting part 21, an annular buckle 22 and a supporting plate 23. The lower support connecting part 21 is matched with the cross section of the lower support 2, the lower support connecting part 21 is welded at the joint of the upper cylinder 11 and the lower cylinder 12 in advance, and after combination, each upright post 1 is connected with the two lower supports 2, so that the upright post 1 is welded with the two lower support connecting parts 21.
When the semi-submersible platform infrastructure is in the form of four columns, the angle between the two lower support connection parts 21 welded to the junction of the upper column 11 and the lower column 12 is 90 °, and when the semi-submersible platform infrastructure is in the form of three columns, the angle between the two lower support connection parts 21 welded to the junction of the upper column 11 and the lower column 12 is 60 °.
At the upper part of the upper column 11, a supporting block 4 is welded, and a projection 41 is arranged at the front end of the supporting block 4. The supporting block 4 is used for temporarily putting the upper support 3 and is used for welding the upper support 3 and the upper column 11. The projection 41 is used to support the lower side surface part of the upper support end slightly higher than the surface of the support block 4, and when approaching the side surface of the upper column body 11, there is enough space to expose the contact seam of the upper support 3 and the side surface of the upper column body 11 for welding.
The lower support connecting part 21 is welded in advance at the joint of the lower part of the upper column body 11 and the lower column body 12, the specification of the lower support connecting part 21 is matched with that of the lower support 2, the front end of the lower support connecting part 21 exceeds the side edge of the lower column body 12, the front end of the lower support connecting part 21 is provided with a ring buckle 22, and the supporting plate 23 is fixed on the lower side edge of the lower support connecting part 21 by the ring buckle 22. A portion of the pallet extends beyond the lower support connection 21 for supporting the lower support 2. The supporting plate 23 is provided with a hollow-out opening 24, and the hollow-out opening 24 is arranged at the joint of the lower support connecting part 21 and the lower support 2 of the workpiece for welding.
The implementation method of the offshore floating wind power combined semi-submersible platform with the three-column or four-column structure is as follows:
1. an upright 1, an upper support 3 and a lower support 2 are constructed at a site a, and a support block 4 and a lower support connection part 21 are installed on the upright 1. The upper support 3 and the lower support 2 are rectangular slender strip beams, and the interiors of the beams adopt hollow structures, so that the weight is reduced. When the upright column 1 is built, the upper column body 11 and the lower column body 12 are welded into a complete main body, the inner parts of the upper column body 11 and the lower column body 12 are hollow structures, and the inner parts can be separated, so that the posture can be adjusted by injecting water conveniently. And two supporting blocks 4 are welded on the upper portion of the upper column body 11, the included angle between the supporting blocks 4 is kept to be more than 60 degrees, when a three-column 1 form is adopted, the included angle is 60 degrees, when a four-column 1 form is adopted, the included angle is 90 degrees, when a five-column form is adopted, the included angle is 108 degrees, and the like. The support block 4 is used to overlap the upper support 3, a lower support connection part 21 is welded in advance at the lower part of the column, that is, at the junction of the upper column 11 and the lower column 12, the lower support connection part 21 is protruded out of the lower column 12 after being welded, and the lower support connection part 21 is provided with a buckle 22 and a retainer plate 23 for overlapping the lower support 2.
2. The constructed upright post 1, the upper support 3 and the lower support 2 are transported to a wharf near a wind field and a field B through a transport ship;
3. at the dock in place B, with the help of crane or crawler crane, put into aquatic with two cylinders 1, cylinder 1 floats steadily under self buoyancy, under the simple mooring condition of dock, controls the relative distance of two cylinders, supports 2 through upper portion, with the help of supporting shoe 4 and the under bracing connecting portion 21 of buildding in advance, connects two cylinders 1 fixedly.
4. When the semi-submersible platform foundation is a three-column structure, the crane/crawler crane is used for putting the last column 1 into water, the column 1 is dragged to a proper position through a tug, the upper support 3 and the lower support 2 are used for connecting the column 1 with the two previously built columns 1 through the pre-built support blocks 4 and the pre-built lower support connecting parts 21, and the semi-submersible platform foundation with the three-column structure is built on the site B.
5. When the semi-submersible platform foundation is a four-column structure, step 3 is repeated at first, two groups of two-two connected columns 1 are completed firstly, two groups of two-two connected columns are arranged vertically in water, the angle and the distance between the two groups of connected columns are controlled through simple mooring, the two groups of connected columns are arranged in parallel and keep a proper distance, then the two groups of connected columns are supported by the upper portion 3 and the lower portion 2, the two groups of two-two connected columns are connected by means of the supporting block 4 and the lower supporting connecting portion 21 which are built in advance, and the semi-submersible platform foundation in the form of four columns is built in a field B.
Claims (10)
1. Offshore floating wind power combination formula semi-submerged platform basis, including three piece at least stands, the stand encloses into polygonized structure, supports through upper portion between the adjacent stand and supports with the lower part and connect its characterized in that: the upright column is composed of an upper column body and a lower column body, the upper column body and the lower column body are coaxially arranged, a supporting block is arranged on the upper portion of the upper column body, the upper portion of the upper column body is supported and placed on the supporting block, a lower supporting connecting portion is arranged on the lower portion of the upper column body, and the lower supporting connecting portion is connected with the lower portion of the upper column body in a supporting mode.
2. The offshore floating wind power combined semi-submersible platform foundation of claim 1, wherein: the front end of the supporting block is provided with a convex block, and the upper support is placed on the convex block.
3. The offshore floating wind power combined semi-submersible platform foundation of claim 1, wherein: the front end of the lower support connecting part exceeds the outer edge of the lower cylinder, a supporting plate is arranged on the lower side of the front end of the lower support connecting part, the supporting plate is fixed at the front end of the lower support connecting part through a ring buckle, and the lower support is placed on the supporting plate.
4. The offshore floating wind power combined semi-submersible platform foundation of claim 1, characterized in that: the upright posts are enclosed into a triangular or quadrangular structure.
5. The offshore floating wind power combined semi-submersible platform foundation of claim 1, wherein: the lower support connecting part is arranged on the upper top surface of the lower column body.
6. The offshore floating wind power combined semi-submersible platform foundation of claim 1, wherein: the upper support and the lower support are both strip-shaped beams.
7. The offshore floating wind power combined semi-submersible platform foundation of claim 1, wherein: the upper column body, the lower column body, the upper support and the lower support are internally hollow structures.
8. The offshore floating wind power combined semi-submersible platform foundation of claim 3, characterized in that: the supporting plate is provided with a hollow opening, and the hollow opening is arranged at the joint of the lower support connecting part and the lower support.
9. The method for installing the foundation of any one of the offshore floating wind power combined semi-submersible platforms as claimed in claims 1 to 8, wherein: the method comprises the following steps of completing the construction of an upper support, a lower support and an upright post in a production place, welding two support blocks on the same horizontal line of the upper part of the upright post, forming an included angle of more than 60 degrees between the support blocks, welding two lower support connecting parts on the same horizontal line of the lower part of the upright post, wherein the included angle between the lower support connecting parts is consistent with the included angle between the support blocks, and the support blocks and the lower support connecting parts correspond up and down; the front end of the lower support connecting part is fixed with a horizontal supporting plate through a buckle; the method comprises the following steps of (1) transporting the constructed upright columns, an upper support and a lower support to a wharf near a wind field through a transport ship, putting the two upright columns into water at the wharf by means of a crane or a crawler crane, controlling the relative distance between the upright columns, placing two ends of the lower support on supporting plates of the two upright columns and welding and fixing the supporting plates with lower support connecting parts, and placing two ends of the upper support on supporting blocks and welding and fixing the upper support with the upright columns; and then, putting an upright column into water by a crane or a crawler crane, dragging the upright column to a corresponding position by a dragging wheel, placing two ends of the lower support on corresponding supporting plates of the two upright columns and welding and fixing the lower support with the lower support connecting part, placing two ends of the upper support on corresponding supporting blocks and welding and fixing the upper support with the upright columns, and repeating the steps to enable the upright columns to form a polygonal structure.
10. The method for installing any offshore floating wind power combined semi-submersible platform foundation of claim 9, wherein: when the number of the upright columns is even, every two upright columns can be connected firstly, and then the connected upright columns are connected through the upper support and the lower support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110307430.8A CN115107939A (en) | 2021-03-23 | 2021-03-23 | Offshore floating type wind power combined semi-submersible platform foundation and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110307430.8A CN115107939A (en) | 2021-03-23 | 2021-03-23 | Offshore floating type wind power combined semi-submersible platform foundation and installation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118205824A (en) * | 2024-05-21 | 2024-06-18 | 上海惠生海洋工程有限公司 | Batch transportation structure, transportation and assembly method of semi-submersible floating fan foundation |
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| CN214493276U (en) * | 2021-03-23 | 2021-10-26 | 惠生（南通）重工有限公司 | Offshore floating type wind power combined semi-submersible platform foundation |
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2021
- 2021-03-23 CN CN202110307430.8A patent/CN115107939A/en active Pending
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| JPS5014102A (en) * | 1973-04-27 | 1975-02-14 | ||
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| WO2018054532A1 (en) * | 2016-09-23 | 2018-03-29 | LEMPART, Marc-Alexander | Structure for erecting on the surfaces of bodies of water, and method for erecting same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118205824A (en) * | 2024-05-21 | 2024-06-18 | 上海惠生海洋工程有限公司 | Batch transportation structure, transportation and assembly method of semi-submersible floating fan foundation |
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Country or region after: China Address after: Port Industry Zone 3, Nantong Economic and Technological Development Zone, Jiangsu Province Applicant after: Wison Clean Energy Technology Group Co.,Ltd. Address before: No. 189 Jianghai Road, Nantong Economic and Technological Development Zone, Nantong City, Jiangsu Province Applicant before: WISON(NANTONG) HEAVY INDUSTRY Co.,Ltd. Country or region before: China |
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| CB02 | Change of applicant information |