CN114954820A - Annular-connected four-column type offshore floating type fan platform - Google Patents
Annular-connected four-column type offshore floating type fan platform Download PDFInfo
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- CN114954820A CN114954820A CN202210718171.2A CN202210718171A CN114954820A CN 114954820 A CN114954820 A CN 114954820A CN 202210718171 A CN202210718171 A CN 202210718171A CN 114954820 A CN114954820 A CN 114954820A
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- column
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- fan
- mooring
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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
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- 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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- 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
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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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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- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ocean & Marine Engineering (AREA)
- Sustainable Energy (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses an annularly connected four-column offshore floating type fan platform, which comprises a platform base, side columns, a middle column and a mooring system, wherein the platform base consists of a bottom plate, a top plate, a fan-shaped frame body and a connecting pipe; the outer lane of bottom plate and roof passes through the platform base that circular connecting plate closed connection formed the cavity structure, and the lateral wall of platform base is equipped with three arc opening, and the arc opening is connected with the side stand, and the roof middle part is equipped with the circular opening of being connected with the center pillar, and the side stand is hollow cylindrical cavity structure with the center pillar, and the bottom and the circular opening of center pillar are linked together, and the side stand is linked together with the arc opening.
Description
Technical Field
The invention belongs to the technical field of offshore wind turbine foundation structures, and particularly relates to a design of an annularly connected four-column offshore floating wind turbine platform.
Background
Wind power resources are renewable clean energy, are important energy branches for achieving the future 'double-carbon' goal, and have irreplaceable advantages of traditional fossil fuels and the like. At present, the onshore wind power technology is mature, China urgently needs to expand the development space of offshore wind power, expand the existing wind power layout, perfect the energy structure of China and meet the gradually increased energy requirements of China.
The offshore floating wind power has wider development potential because offshore wind energy resources are limited, the wind speed in deep and open sea is larger and more stable, the generated power is in direct proportion to the 3 rd power of the wind speed, and the generated energy is larger. The main forms of the offshore floating type fan platform include a semi-submersible type, a single column type, a tension leg type and a barge type, wherein the semi-submersible type has wider application range to water depth and is suitable for integral installation and integral towing on land. Through research and practice in various countries at present, the semi-submersible type fan platform has higher stability in a three-upright-column mode, so that a more reliable semi-submersible structure mode is provided based on the three-upright-column mode.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides an annular-connected four-column offshore floating type wind turbine platform, and improves the reliability and the application universality of a floating type wind turbine foundation. The floating type fan platform has the advantages that the gravity center design is lower, the floating type fan platform has lighter mass compared with a platform with the same magnitude, the whole heave resistance motion capability is stronger, and the working stability of the floating type fan platform can be improved.
The purpose of the invention is realized by the following technical scheme:
the platform base consists of a bottom plate, a top plate, a fan-shaped frame body and a connecting pipe, wherein a plurality of fan-shaped through holes are respectively and correspondingly uniformly distributed on the bottom plate and the top plate, round holes are uniformly distributed around the fan-shaped through holes, the corresponding fan-shaped through holes on the bottom plate and the top plate are connected through the fan-shaped frame body, and the corresponding round holes on the bottom plate and the top plate are connected through the connecting pipe; the outer rings of the bottom plate and the top plate are connected in a closed manner through a circular connecting plate to form a platform base with a cavity structure, three arc-shaped openings are formed in the side wall of the platform base at equal intervals, the arc-shaped openings are connected with side stand columns, a circular opening connected with the middle stand column is formed in the middle of the top plate, the side stand columns and the middle stand columns are both hollow cylindrical cavity structures, the bottom of the middle stand column is communicated with the circular opening, the side stand columns are communicated with the arc-shaped openings, and the cavity structure of the platform base is communicated with the side stand columns and the middle stand columns; the bottom of the side upright post is provided with a water inlet;
the mooring system comprises mooring cables and mooring anchors, connecting pieces are arranged on the side upright columns, one ends of the mooring cables are connected with the connecting pieces in a hinged mode, and the other ends of the mooring cables are connected with the mooring anchors located on the sea bottom.
Furthermore, arc-shaped chamfers are arranged at included angles of the fan-shaped frame body and the fan-shaped through hole.
Further, the platform base, the side columns and the middle column are made of steel materials and are connected in a welding mode.
Furthermore, the through holes of the connecting pipes on the platform base form swing-resisting holes of the platform base, and the swing-resisting holes are arranged at equal intervals.
Furthermore, the included angle between the central axis of the middle upright post and the connecting line of the central axes of the side upright posts is 120 degrees.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. according to the invention, a plurality of box-type cabins with rectangular cross sections are formed in the platform base, and all cabins are communicated with each other to store most ballast water, so that the center of gravity of the whole floating type fan platform can be effectively reduced. And the specific structure of the platform base ensures a larger surface area, and the heave, pitch and roll motions of the platform are well reduced.
2. The side upright posts are used for providing buoyancy and increasing stability, impact of incoming flow can be dispersed, and influence on the center upright posts is reduced. The top of the middle upright post is connected with a fan tower cylinder for supporting the offshore power generation work.
3. And arc-shaped chamfers are arranged at the included angles of the fan-shaped frame body and the fan-shaped through hole, and are used for preventing stress concentration which can occur when the platform base bears transverse and longitudinal bending moment.
4. The through holes of the connecting pipes on the platform base form swing-resisting holes of the platform base, and the swing-resisting holes are arranged at equal intervals. According to the calculation, the hydrodynamic characteristics can be improved while the intensity of the oscillation resisting hole is met, and the motion response amplitude of six degrees of freedom is effectively reduced; the number and the diameter of the connecting pipes, namely the oscillation preventing holes, can be changed according to the size of the platform and the actual requirement of the sea area so as to meet the corresponding motion response.
5. The offshore floating type wind turbine platform is low in integral gravity center and good in stability, and the danger of overturning is not worried during towing; because the platform base bears most of ballast, the gravity center of the whole floating type fan platform is well reduced, and the operation reliability is improved.
6. The platform base of the invention also directly plays the role of the heave plate, has larger integral area, greatly reduces the heave effect of the floating type fan platform, and simultaneously has excellent bending moment resistance capability to resist the damage of extreme sea conditions to the structure.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of a floating wind turbine platform;
FIG. 3 is a bottom view of the platform base;
fig. 4 is a side view of a floating wind turbine platform.
Reference numerals: 1-platform base, 2-middle upright post, 3-side upright post, 4-mooring cable, 5-mooring anchor, 6-connecting pipe, 7-fan-shaped frame body and 8-seabed.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 4, the four-column offshore floating fan platform in annular connection comprises a platform base 1, side columns 3, a center column 2 and a mooring system, wherein the platform base 1 mainly plays a role in carrying platform ballast and connecting the columns and comprises a bottom plate, a top plate, a fan-shaped frame body 7 and a connecting pipe 6, three fan-shaped through holes are uniformly distributed on the bottom plate and the top plate correspondingly, and the specific number of the fan-shaped through holes can be set to be 3-6 according to needs. Round holes are uniformly distributed around the fan-shaped through holes, the corresponding fan-shaped through holes on the bottom plate and the top plate are connected through a fan-shaped frame body 7, and the corresponding round holes on the bottom plate and the top plate are connected through a connecting pipe 6; the outer rings of the bottom plate and the top plate are connected in a closed mode through a circular connecting plate to form a platform base 1 with a cavity structure, three arc-shaped openings are formed in the side wall of the platform base 1 at equal intervals, the arc-shaped openings are connected with side upright columns 3, a circular opening connected with a middle upright column 2 is formed in the middle of the top plate, the side upright columns and the middle upright columns are both hollow cylindrical cavity structures, the bottom of the middle upright column is communicated with the circular opening, the side upright columns 3 are communicated with the arc-shaped openings, and the cavity structure of the platform base is communicated with the side upright columns and the middle upright columns; the middle of the bottom of the side upright post is provided with a water inlet for increasing and decreasing ballast water, and seawater is controllably pumped and discharged through an electric device, so that the floating fan platform is kept stable.
The mooring system comprises a mooring cable 4 and a mooring anchor 5, a connecting piece is arranged on the side upright post 3, one end of the mooring cable 4 is connected with the connecting piece in a hinged mode, and the other end of the mooring cable is connected with the mooring anchor 5 located on the seabed 8.
Specifically, in this embodiment, the entire floating wind turbine platform is constructed from steel, and in some cases, the floating wind turbine platform may be made of reinforced concrete. The middle upright post 2, the side upright posts 3 and the platform base 4 are connected into a whole by welding, and the internal hollow structure bears ballast water and is communicated with the platform base 4; the diameter of the side upright post 3 can be adjusted according to actual needs, is mainly used for providing buoyancy and increasing stability, can disperse the impact of incoming flow, and reduces the influence on the centering upright post 2. The top of the middle upright post 2 is connected with a fan tower cylinder for supporting the offshore power generation work. In this embodiment, the included angle between the central axis of the center pillar 2 and the connecting line of the central axes of the 3 side pillars 3 is 120 °.
In the embodiment, the platform base 1 is provided with the fan-shaped frame bodies and the connecting pipes, a plurality of box-shaped cabins with rectangular cross sections are formed inside the platform base 1, the cabins are communicated with each other to store most of ballast water, and the center of gravity of the whole floating type fan platform can be effectively reduced. The structural arrangement of the platform base 1 ensures a large surface area, and reduces the heave, pitch and roll motions of the platform well.
Specifically, the included angle between the fan-shaped frame 7 and the fan-shaped through hole is provided with a circular arc chamfer angle for preventing stress concentration when the platform base 1 bears transverse and longitudinal bending moment.
The through holes of the connecting pipes on the platform base form swing-resisting holes of the platform base, and the swing-resisting holes are arranged at equal intervals. According to the calculation, the hydrodynamic characteristics can be improved while the intensity of the oscillation resisting hole is met, and the motion response amplitude of six degrees of freedom is effectively reduced; the number and the diameter of the connecting pipes, namely the oscillation preventing holes, can be changed according to the size of the platform and the actual requirement of the sea area so as to meet the corresponding motion response.
The mooring system consists of mooring lines 4 and mooring anchors 5, wherein the mooring lines 4 are of steel chain structures, the self weight of the mooring lines can provide a small part of vertical force, and the mooring lines are connected with the upper edge part of the platform base 4 in a hinged mode and are symmetrically distributed; different mooring anchors 5 are selected for anchoring according to the soil condition of the seabed 8, and the motions of the floating type fan platform in surging, pitching, rolling and yawing are mainly resisted, so that the floating type fan platform is relatively static in a working area.
The floating fan platform can be integrally formed on a dock and towed by a ship, and draft before and after ballasting is suitable for most docks and has strong adaptability to the water depth of a working water area.
The invention has lower integral gravity center and good stability, and does not worry about the danger of overturning during towing; because the platform base 1 bears most of ballast, the gravity center of the whole floating type fan platform is well lowered, and the operation reliability is improved.
The platform base 1 of the invention also directly plays the role of a heave plate, has larger integral area, greatly reduces the heave effect of the floating type fan platform 1, and simultaneously has excellent bending moment resistance capability to resist the damage of extreme sea conditions to the structure.
The present invention is not limited to the above-described embodiments. The foregoing description of the specific embodiments is intended to describe and illustrate the technical solutions of the present invention, and the above specific embodiments are merely illustrative and not restrictive. Those skilled in the art can make many changes and modifications to the invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. The four-column offshore floating type fan platform is characterized by comprising a platform base, side columns, a middle column and a mooring system, wherein the platform base consists of a bottom plate, a top plate, a fan-shaped frame body and connecting pipes; the outer rings of the bottom plate and the top plate are connected in a closed manner through a circular connecting plate to form a platform base with a cavity structure, three arc-shaped openings are formed in the side wall of the platform base at equal intervals, the arc-shaped openings are connected with side stand columns, a circular opening connected with the middle stand column is formed in the middle of the top plate, the side stand columns and the middle stand columns are both hollow cylindrical cavity structures, the bottom of the middle stand column is communicated with the circular opening, the side stand columns are communicated with the arc-shaped openings, and the cavity structure of the platform base is communicated with the side stand columns and the middle stand columns; the bottom of the side upright post is provided with a water inlet;
the mooring system comprises mooring cables and mooring anchors, connecting pieces are arranged on the side stand columns, one ends of the mooring cables are connected with the connecting pieces in a hinged mode, and the other ends of the mooring cables are connected with the mooring anchors located at the bottom of the sea.
2. The annularly connected four-column offshore floating fan platform according to claim 1, wherein the included angle between the fan-shaped frame body and the fan-shaped through hole is provided with a circular arc chamfer.
3. The annularly connected four-column offshore floating wind turbine platform of claim 1, wherein the platform base, the side columns and the center column are made of steel material, and the platform base, the side columns and the center column are connected by welding.
4. The annularly connected four-column offshore floating wind turbine platform of claim 1, wherein the through holes of each connecting pipe on the platform base form oscillation preventing holes of the platform base, and are arranged at equal intervals.
5. The annularly connected four-column offshore floating wind turbine platform of claim 1, wherein an angle between a connecting line of the central axis of the central column and the central axis of each side column is 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210718171.2A CN114954820A (en) | 2022-06-21 | 2022-06-21 | Annular-connected four-column type offshore floating type fan platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210718171.2A CN114954820A (en) | 2022-06-21 | 2022-06-21 | Annular-connected four-column type offshore floating type fan platform |
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| Publication Number | Publication Date |
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| CN114954820A true CN114954820A (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210718171.2A Pending CN114954820A (en) | 2022-06-21 | 2022-06-21 | Annular-connected four-column type offshore floating type fan platform |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120014657A (en) * | 2010-08-10 | 2012-02-20 | 현대엔지니어링 주식회사 | Floating support structure for an offshore wind turbine |
| US20130266453A1 (en) * | 2012-04-05 | 2013-10-10 | Dcns | Offshore wind turbine foundation, corresponding offshore wind turbine and method for their installation on site |
| CN112628087A (en) * | 2020-12-30 | 2021-04-09 | 华能国际电力股份有限公司江苏清洁能源分公司 | Semi-submersible offshore wind turbine unit, foundation and heave plate |
| JP2022029139A (en) * | 2020-08-04 | 2022-02-17 | ヴィーエル オフショア、エルエルシー | Motion-attenuated semi-submersible floating-type foundation for supporting wind power generation system |
| CN114313124A (en) * | 2021-12-31 | 2022-04-12 | 大连海事大学 | Floating foundation of ring type offshore wind turbine |
-
2022
- 2022-06-21 CN CN202210718171.2A patent/CN114954820A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120014657A (en) * | 2010-08-10 | 2012-02-20 | 현대엔지니어링 주식회사 | Floating support structure for an offshore wind turbine |
| US20130266453A1 (en) * | 2012-04-05 | 2013-10-10 | Dcns | Offshore wind turbine foundation, corresponding offshore wind turbine and method for their installation on site |
| JP2022029139A (en) * | 2020-08-04 | 2022-02-17 | ヴィーエル オフショア、エルエルシー | Motion-attenuated semi-submersible floating-type foundation for supporting wind power generation system |
| CN112628087A (en) * | 2020-12-30 | 2021-04-09 | 华能国际电力股份有限公司江苏清洁能源分公司 | Semi-submersible offshore wind turbine unit, foundation and heave plate |
| CN114313124A (en) * | 2021-12-31 | 2022-04-12 | 大连海事大学 | Floating foundation of ring type offshore wind turbine |
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