CN217918339U - Variable cross-section stand star type damping box - Google Patents
Variable cross-section stand star type damping box Download PDFInfo
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- CN217918339U CN217918339U CN202221596348.8U CN202221596348U CN217918339U CN 217918339 U CN217918339 U CN 217918339U CN 202221596348 U CN202221596348 U CN 202221596348U CN 217918339 U CN217918339 U CN 217918339U
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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
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- 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 relates to a variable cross-section stand column star-shaped damping box, which comprises a damping mechanism, a variable cross-section stand column and a circular supporting column, wherein the damping mechanism comprises a star-shaped damping box, the star-shaped damping box is Y-shaped branch, each branch end of the star-shaped damping box of the Y-shaped branch is connected with a circular damping box, and the star-shaped damping box and the circular damping boxes are used for reducing the gravity center of the whole structure and increasing the bottom area of a floating body; the variable cross-section upright post is fixedly connected to the upper end of the circular damping box and used for providing a restoring moment; the circular support column is fixedly connected with the variable cross-section stand column and is used for supporting the variable cross-section stand column. The invention has the beneficial effects that: 1. the restoring torque is ensured through the thick upright post with the variable cross section, and the steel quantity is reduced; 2. the stability of the floating foundation is improved through the round damping box; the heaving area of the floating body is increased through the star-shaped damping box, and the heaving inherent period is increased; 3. the bending-resistant section coefficient of the structure is further increased through the circular support columns, and the stability of the structure is guaranteed.
Description
Technical Field
The invention relates to the technical field of floating damping boxes, in particular to a variable cross-section stand column star-shaped damping box.
Background
The offshore wind farm is a necessary trend to develop from an offshore shallow water area to a deep water area, and because the construction cost of a fixed foundation in the deep water area is too high, various countries begin research on a floating foundation. In the early 90 s of the last century, some european research institutes have designed a multi-unit offshore wind field concept, and offshore wind turbines positioned by mooring can be fixed at designated places in any sea area.
Compared with the traditional offshore wind power, the deep sea wind power is stronger, and the application range of the floating offshore wind power is wider. Compared with a fixed foundation, the floating foundation of the floating offshore wind turbine can be moved and is convenient to disassemble, and the floating foundation can be installed in deeper sea areas with richer wind energy. Meanwhile, the offshore floating foundation is installed in a water area far away from a shoreline, so that the visual influence is conveniently eliminated, and the adverse influence of noise, electromagnetic waves and the like on the environment can be greatly reduced. In addition, in the aspect of economy, the manufacturing cost of the floating offshore wind turbine floating foundation in the deep and distant sea areas is far lower than that of the fixed offshore wind turbine foundation, and the trend of further reducing the manufacturing cost of the floating foundation is presented.
The offshore floating type wind turbine system mainly comprises an upper fan, a supporting tower, a floating foundation and an anchoring system. The floating foundation is used as a structure for supporting the tower and the normal work of the wind turbine, and the design of the floating foundation has important significance for the performance of the offshore wind turbine. The mooring system is used for fixing the offshore wind turbine system and limiting the swaying and movement of the offshore wind turbine system within a certain range on the sea surface.
At present, a floating foundation of a floating offshore wind turbine generally takes a semi-submersible platform as a main part, the semi-submersible platform is generally formed by combining a plurality of large upright post buoys, the buoys are connected by a plurality of inclined struts, a wind turbine main body can be arranged on any upright post, and the inside of the upright post can be divided into cabins for arranging ballast so as to adjust the integral gravity center and stability of the platform. The semi-submersible floating foundation is generally fixed on the seabed by a plurality of radial anchor chain lines to limit the movement within a certain range, can be installed on land, and is towed to a designated sea area to be connected with an anchoring system.
Generally, the semi-submersible type floating foundation has strong wind and wave resistance and is suitable for different water depths, but the key problem of designing the semi-submersible type floating foundation is how to reduce motion response to ensure normal work of the wind turbine and reasonably design and reduce the cost of the floating foundation.
Disclosure of Invention
The embodiment of the invention provides a variable cross-section stand column star-shaped damping box which can solve the problems in the related art.
On one hand, the embodiment of the invention provides a variable cross-section upright post star-shaped damping box,
the floating body damping device comprises a damping mechanism, wherein the damping mechanism comprises a star-shaped damping box, the star-shaped damping box is Y-shaped branch, each branch end of the star-shaped damping box of the Y-shaped branch is connected with a circular damping box, and the star-shaped damping box and the circular damping boxes are used for reducing the gravity center of the whole structure and increasing the bottom area of the floating body;
the variable cross-section upright post is fixedly connected to the upper end of the circular damping box and used for providing a restoring moment;
and the circular support column is fixedly connected with the variable cross-section stand column and is used for supporting the variable cross-section stand column.
In some embodiments, the star-shaped damper box is hollow inside for communicating with the circular damper box.
In some embodiments, the three branches of the star-shaped damper box are equal in length and are angled at 120 degrees from each other two by two.
In some embodiments, the circular damping boxes are provided with three and all hollow inside for loading ballast water.
In some embodiments, there are three circular support columns, and one circular support column is fixedly connected between every two variable cross-section columns.
In some embodiments, each variable cross-section upright post is in a cylindrical shape with a thin lower part and a thick upper part, and is used for reducing the acting area of the ocean current on the floating body, reducing the ocean current acting force and further reducing the motion response of the floating foundation and the mooring tension of the mooring anchor chain.
In some embodiments, one of the three circular damping boxes is fixedly connected with a fan supporting rod.
In some embodiments, the fan support rod is rotatably connected with a fan away from the circular damper box.
The technical scheme provided by the invention has the beneficial effects that:
1. the variable cross-section upright post adopts a thick upright post design above a water line surface, so that the floating foundation can generate enough restoring moment when being subjected to huge overturning moment generated by a fan;
2. the variable cross-section upright post adopts a thin upright post design below the waterline surface, so that the action area of the ocean current on the floating body can be reduced, the ocean current acting force is reduced, and the motion response of the floating foundation and the mooring tension of the mooring anchor chain are further reduced; the diameter of the upright post below the waterline is reduced, so that the whole floating foundation has smaller steel amount and good economical efficiency compared with the traditional upright post;
3. the circular damping boxes below the three upright posts can reduce the gravity center position of the whole structure by loading ballast water, improve the stability of the floating foundation and provide certain vertical damping; the star-shaped damping boxes connected with the three circular damping boxes can further increase the heaving area of the floating body and increase the heaving inherent period, so that the floating foundation can avoid the wave energy concentration range and reduce the motion response of the fan;
4. the connection of the star-shaped damping box and the three upright posts is favorable for enhancing the connection mode between the structures, and compared with the connection mode of the traditional rod piece, the star-shaped damping box has larger bending section coefficient and can resist the wave bending moment under severe sea conditions;
5. the circular cross brace above the water line further increases the bending-resistant section coefficient of the structure and ensures the stability of the structure.
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 diagram of the overall structure of a variable cross-section upright post star-shaped damping box according to the invention;
FIG. 2 is a schematic view of the overall structure of a damping box of a variable cross-section stand column star-shaped damping box according to the present invention;
FIG. 3 is a top view of a damping box of the variable cross-section stand column star-shaped damping box of the present invention;
FIG. 4 is a schematic structural diagram of a variable cross-section stand column star-shaped damping box in a forward floating state according to the present invention;
FIG. 5 is a schematic structural diagram of the inclined state of the variable cross-section upright post star-shaped damping box of the present invention.
In the figure: 1. a damping mechanism; 12. a circular damping box; 2. a variable cross-section upright post; 3. a circular support column; 4. a fan supporting rod; 5. a fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 2, an embodiment of the present invention provides a variable cross-section post star-shaped damping box, which includes
The damping mechanism 1 comprises a star-shaped damping box 11, the star-shaped damping box 11 is Y-shaped branched, each branch end of the star-shaped damping box 11 of the Y-shaped branch is connected with a circular damping box 12, and the star-shaped damping box 11 and the circular damping boxes 12 are used for reducing the gravity center of the whole structure and increasing the area of the bottom of the floating body;
the variable cross-section upright post 2 is fixedly connected to the upper end of the circular damping box 12 and used for providing a restoring moment;
and the circular support column 3 is fixedly connected with the variable cross-section upright post 2 and is used for supporting the variable cross-section upright post 2.
Optionally, the star-shaped damping box 11 is hollow inside and is used for being communicated with the circular damping boxes 12, and the three circular damping boxes 12 are matched with the star-shaped damping box 11, so that the heaving area can be further increased, the heaving inherent period can be increased, the device can avoid the wave energy concentration range, and the fan motion response can be reduced.
Optionally, the three branches of the star-shaped damper box 11 have the same length, and two angles of the three branches are 120 degrees.
Optionally, the circular damping box 12 is provided with three and the inside is hollow for loading ballast water, and the center of gravity position of the whole structure is reduced through loading ballast water, so that the stability of the floating foundation is improved, and meanwhile, certain vertical damping is provided.
Optionally, the number of the circular support columns 3 is three, every two one of the variable cross section columns 2 is fixedly connected with one circular support column 3, the star-shaped damping box 11 is connected with the three circular damping boxes 12, and the three circular support columns 3 on the variable cross section columns 2 are connected to facilitate the connection mode between the reinforcing structures.
Optionally, each variable cross-section upright column 2 is a cylinder with a thin lower part and a thick upper part, and is used for reducing the acting area of the ocean current on the floating body, reducing the ocean current acting force, and further reducing the motion response of the floating foundation and the mooring tension of the mooring anchor chain.
As shown in fig. 1, optionally, one of the three circular damping boxes 12 is fixedly connected with a fan supporting rod 4.
Optionally, the fan support rod 4 is far away from the circular damper box 12 and is rotatably connected with a fan 5.
The embodiments of the invention are as follows: the device is placed on the water surface,
as shown in fig. 3, in the case of no wind waves: 1. the circular damping box 12 of the device lowers the gravity center position of the whole structure through the loaded ballast water, thereby improving the stability of the floating foundation of the device and simultaneously providing certain vertical damping; 2. the water surface is positioned on the thin cylindrical upright post of the variable cross-section upright post 2. Through thin cylindrical column, reduce the area of action of ocean current to the body, reduce the ocean current effort, further reduce the motion response of floating foundation and the mooring tension of mooring anchor chain.
As shown in fig. 4, in the case of wind waves: 1. the variable cross-section upright post 2 adopts a thick upright post design above a water plane, so that the floating foundation of the device can generate enough restoring moment when receiving huge overturning moment generated by a fan; 2. the loaded water in the three circular supporting columns 3 is converted through the star-shaped damping boxes 11, so that the heaving area of the floating body is increased, the heaving inherent period is increased, the floating foundation can avoid the wave energy concentration range, and the motion response of the fan 5 is reduced.
The invention has the beneficial effects that:
1. the variable cross-section upright post adopts a thick upright post design above a water line surface, so that the floating foundation of the device can generate enough restoring moment when being subjected to huge overturning moment generated by a fan;
2. the variable cross-section upright post adopts a thin upright post design below a water line surface, so that the acting area of ocean current on the floating body can be reduced, the ocean current acting force is reduced, and the motion response of the floating foundation and the mooring tension of a mooring anchor chain are further reduced; the diameter of the upright post below the waterline is reduced, so that the whole floating foundation has smaller steel amount and good economical efficiency compared with the traditional upright post;
3. the circular damping boxes below the three upright posts can reduce the gravity center position of the whole structure by loading ballast water, improve the stability of the floating foundation and provide certain vertical damping; the star-shaped damping boxes connected with the three circular damping boxes can further increase the heaving area of the floating body and increase the heaving inherent cycle, so that the floating foundation can avoid the wave energy concentration range and reduce the motion response of the fan;
4. the connection of the star-shaped damping box and the three upright posts is favorable for enhancing the connection mode between the structures, and compared with the connection mode of the traditional rod piece, the star-shaped damping box has larger bending section coefficient and can resist the wave bending moment under severe sea conditions;
5. the circular cross brace above the water line further increases the bending-resistant section coefficient of the structure, and ensures the stability of the structure.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are intended to be inclusive and mean, for example, that there may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A variable cross-section stand column star-shaped damping box is characterized by comprising
The damping mechanism (1) comprises a star-shaped damping box (11), the star-shaped damping box (11) is Y-shaped branched, each branch end of the star-shaped damping box (11) of the Y-shaped branch is connected with a circular damping box (12), and the star-shaped damping box (11) and the circular damping boxes (12) are used for reducing the gravity center of the whole structure and increasing the bottom area of the floating body;
the variable cross-section upright post (2) is fixedly connected to the upper end of the circular damping box (12) and is used for providing a restoring moment;
the circular support column (3), circular support column (3) with variable cross section stand (2) fixed connection for support variable cross section stand (2).
2. The star-shaped damping box with variable cross-section upright posts as claimed in claim 1, characterized in that the star-shaped damping box (11) is hollow inside and is used for communicating with the circular damping box (12).
3. The star-shaped damping box with variable cross-section upright posts as claimed in claim 1, characterized in that the three branches of the star-shaped damping box (11) are equal in length and have an angle of 120 degrees between each other.
4. The variable-section upright-column star-shaped damping tank as claimed in claim 1, wherein said circular damping tank (12) is provided with three and hollow interiors for loading ballast water.
5. The variable cross-section upright star-shaped damping box as claimed in any one of claims 1 to 4, characterized in that the number of the circular supporting columns (3) is three, and one circular supporting column (3) is fixedly connected between every two variable cross-section uprights (2).
6. The variable cross-section upright post star-shaped damping box as claimed in claim 1, wherein each variable cross-section upright post (2) is in a cylindrical shape with a thin lower part and a thick upper part, and is used for reducing the acting area of ocean currents on the floating body, reducing the acting force of the ocean currents and further reducing the motion response of the floating foundation and the mooring tension of the mooring anchor chain.
7. The variable cross-section upright post star-shaped damper box as claimed in claim 1, characterized in that a fan supporting rod (4) is fixedly connected with one of the three circular damper boxes (12).
8. The variable cross-section stand column star-shaped damper box as claimed in claim 7, characterized in that the fan support rod (4) is rotatably connected with a fan (5) away from the circular damper box (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221596348.8U CN217918339U (en) | 2022-06-23 | 2022-06-23 | Variable cross-section stand star type damping box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221596348.8U CN217918339U (en) | 2022-06-23 | 2022-06-23 | Variable cross-section stand star type damping box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217918339U true CN217918339U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221596348.8U Active CN217918339U (en) | 2022-06-23 | 2022-06-23 | Variable cross-section stand star type damping box |
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| Country | Link |
|---|---|
| CN (1) | CN217918339U (en) |
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2022
- 2022-06-23 CN CN202221596348.8U patent/CN217918339U/en active Active
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