CN116241416A - Floating type offshore wind power structure - Google Patents
Floating type offshore wind power structure Download PDFInfo
- Publication number
- CN116241416A CN116241416A CN202310189658.0A CN202310189658A CN116241416A CN 116241416 A CN116241416 A CN 116241416A CN 202310189658 A CN202310189658 A CN 202310189658A CN 116241416 A CN116241416 A CN 116241416A
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- China
- Prior art keywords
- vertex
- pontoon
- pontoons
- offshore wind
- floating
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- 238000007667 floating Methods 0.000 title claims abstract description 30
- 238000010248 power generation Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004035 construction material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
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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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- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
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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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
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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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to a floating type offshore wind power structure. Comprising the following steps: the floating platform takes three single-floating pontoons with vertexes as three vertexes, and the upper ends and the lower ends of the three single-floating pontoons with vertexes are respectively connected by supporting beams to form a triangular prism-shaped structure platform with an equilateral triangle cross section; the central single pontoon is arranged in the geometric center, and the upper end and the lower end of the central single pontoon are connected with the upper ends and the lower ends corresponding to the three vertex single pontoons through the supporting cross beam; a wind turbine generator; the mooring structure comprises six catenaries and six anchor piles, and the tail end of each catenary is connected with one anchor pile; the three catenaries are connected to the lower ends of the three vertex single buoys, and an included angle of 120 degrees is formed between the three catenaries; the other three bracelets are connected to the upper ends of the three vertex single pontoons, and an included angle of 120 degrees is formed between the other three bracelets; two catenaries connected to the upper end and the lower end of a single pontoon at the same vertex are in a splayed anchor state; four hammer baffles are respectively arranged below the three vertex single pontoons and the central single pontoon.
Description
Technical Field
The invention relates to a floating offshore wind power structure.
Background
As offshore wind power development goes from offshore to deep open sea, in order to reduce unit cost, the capacity of the offshore wind turbine generator is increased more and more, and a floating foundation is necessarily adopted. The floating type offshore wind turbine mainly comprises a supporting structure consisting of a wind turbine, a tower and a floating foundation, and a mooring system.
The current floating foundation takes a single pontoon as a main body, and combines mooring steel ropes and anchors to realize the purpose of floating. The sea surface has great influence on a floating foundation because of large wave fluctuation, and a relatively stable environment cannot be realized.
Disclosure of Invention
The application discloses a floating type offshore wind power structure, which aims to provide a floating foundation capable of realizing relative stability on the sea surface.
In order to achieve the technical purpose, the application adopts the following technical scheme:
a floating offshore wind structure comprising: the floating platform comprises three single-vertex pontoons, a central single-pontoon and a plurality of supporting beams, wherein the three single-vertex pontoons are three vertexes, and the upper ends and the lower ends of the three single-vertex pontoons are respectively connected by the supporting beams to form a triangular prism-shaped structure platform with an equilateral triangle cross section; the central single pontoon is arranged at the geometric center of the Mitsubishi column, and the upper end and the lower end of the central single pontoon are connected with the upper ends and the lower ends corresponding to the three vertex single pontoons through the supporting cross beam; the wind power generation set is connected to the top end of the central single pontoon; the mooring structure comprises six catenary chains and six anchor piles, and the tail end of each catenary chain is connected with one anchor pile; the three bracelets are connected to the lower ends of the three vertex single pontoons, and an included angle of 120 degrees is formed between the three bracelets; the other three bracelets are connected to the upper ends of the three vertex single pontoons, and an included angle of 120 degrees is formed between the other three bracelets; two catenaries connected to the upper end and the lower end of the same vertex single pontoon are in a splayed anchor state; four hammer baffles are respectively arranged below the three vertex single pontoons and the central single pontoon.
Preferably, the diameter of the hammer baffle is not less than twice the diameter of the apex single pontoon and twice the diameter of the center single pontoon.
Preferably, each of the catenary is threaded with 0-100 tons of concrete blocks.
Preferably, the vertex single pontoon and the center single pontoon are respectively divided into two chambers, wherein one chamber is a fixed drainage cabin, the other chamber is an adjusting cabin, and drainage facilities are arranged in the two chambers.
Preferably, the drainage facility is controlled by an active structure control system, and the active structure control system is arranged in the wind turbine generator.
Preferably, a combined blade pitch control system is further arranged in the wind turbine, and the combined blade pitch control system is connected with and controls symmetrical thrust and torque loads on the wind wheel.
By adopting the technical scheme, the floating offshore wind power structure has the advantages of relatively stable overall structure, high submerging depth, small influence of waves on the whole body and small fluctuation of a fan; the static balance is integrally achieved through the dead weight condition of 6 anchor chains (3 anchor chains are respectively arranged on the upper part and the lower part) of the pontoon, and the pitching, the rolling and the swaying are effectively controlled, so that the integral stability is improved.
Drawings
FIG. 1 is a front view of the present application;
FIG. 2 is a side view of the present application;
fig. 3 is a top view of the present application.
Description of the embodiments
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Referring to fig. 1 to 3, the floating offshore wind power structure comprises a floating platform, a wind turbine generator set and a mooring structure.
As shown in connection with fig. 1 and 3, the floating platform comprises three apex single pontoons 1, a central single pontoon 2 and a number of supporting beams 3. The three-vertex single pontoon 1 is three vertexes, the upper ends of the three-vertex single pontoon 1 are connected by a supporting beam 3, and the lower ends of the three-vertex single pontoon 1 are connected by a supporting beam 3, so that a triangular prism-shaped structure platform with an equilateral triangle cross section is formed. The center single pontoon 2 is arranged at the geometric center of the Mitsubishi column, the upper end and the lower end of the center single pontoon are connected with the upper ends and the lower ends corresponding to the three vertex single pontoons through the supporting cross beam 3, and the wind turbine generator 4 is connected at the top end of the center single pontoon 2. The 3+1 pontoon structure is relatively stable, the submerging depth is high, the water blocking area of the upper structure is small, the transverse cross brace interface is small, the overall influence of waves is small, and the fluctuation of a fan is small.
The whole construction material of the floating platform is formed by welding steel materials, under the combined action of self gravity and buoyancy, each pontoon utilizes enough buoyancy of the pontoon to enable tension legs between a mooring system and an anchoring structure of the seabed to be in a tensioning state all the time, and further stability in the vertical direction of the platform is maintained. Considering the complex working condition at sea in the actual use process, under the combined action of waves and water flow, the resonance phenomenon can appear in the motion of the platform in the plane, and the stability of the platform is affected. The inside of the vertex single pontoon 1 and the inside of the central single pontoon 2 are respectively divided into two chambers, wherein one chamber is a fixed drainage cabin, the other chamber is an adjusting cabin, and drainage facilities are arranged in the two chambers. The drainage facility is controlled by an active structure control system (ASC) which is arranged in the wind turbine generator. Through the arrangement of the two chambers, the drainage facility and other structures, the gravity center and the stability of the whole floating platform can be adjusted according to the external load change, so that the stability of the whole system is in a good state.
Each pontoon adopts a catenary 5 for mooring, the catenary adopts 6 phi 32mm large-diameter plastic steel wire ropes, the catenary is penetrated and hung with a 0-100t concrete block 8 to endow pretension to the anchor chain, and the tail end adopts a concrete pipe pile as an anchor pile 6 for soil-entering anchoring. When the pontoon floats under the influence of large-scale stormy waves, the concrete blocks form the pull-up resistance, reduce the pulling force of the anchor chain steel wire rope, and reduce the anchoring cost. The upper end and the lower end of the pontoon are respectively provided with a submarine mooring catenary, a certain degree of freedom is reserved, the lower three catenary 5 are distributed at equal angles, the catenary 5 are uniformly distributed at an angle of 120 degrees, the upper catenary is also uniformly distributed at an angle of 120 degrees integrally, but the upper and lower catenary of the same pontoon are in a splayed anchor state. The static balance is achieved through the dead weight condition of 6 anchor chains (3 anchor chains are respectively arranged on the upper part and the lower part) of the pontoon, so that the pontoon can be provided with a certain motion envelope and degree of freedom, and the whole swaying, rolling, pitching and pitching of the platform can be limited.
In addition, a combined blade pitch control system (CBP) is arranged in the wind turbine. The CBP mainly provides necessary excitation and driving required by realizing the rotation speed control through changing the symmetrical thrust and torque load acting on the wind wheel, so that the fan can be in a stable power generation state, and the influence of wind speed change on the motor is reduced.
Furthermore, as shown in fig. 1, a hammer baffle 7 is provided below each of the three apex single pontoons 1 and one center single pontoon 2. The main function of the hammer baffle 7 is to increase the contact area between the plate surface and water, and the damper function is exerted when heave occurs, so that the hammer baffle can effectively provide strong resistance no matter whether the pontoon heave upwards or downwards, the swing amplitude and the heave duration are reduced, and the reaction time is provided for the active balance control system. The diameter of the hammer baffle 7 is not smaller than twice the diameter of the apex single pontoon and twice the diameter of the center single pontoon.
To sum up, the advantages of the present application are:
1. the buoyancy and gravity static balance difference is small, the buoyancy is generally larger than the gravity, static balance is integrally achieved through the dead weight conditions of 6 anchor chains (3 anchor chains are respectively arranged up and down) of the pontoon, and the pitching, the pitching and the rolling are effectively controlled, so that the integral stability is improved.
2. The 3+1 pontoon structure is relatively stable, the submerging depth is high, the water blocking area of the upper structure is small, the transverse cross brace interface is small, the overall influence of waves is small, and the fluctuation of a fan is small.
3. The unit MW steel consumption is small, and the economic and popularization application values are very strong.
4. The active control system and the passive control system are arranged, the active control system can regulate heave, bow and trim through controlling blade torque and ballast water, and can quickly return to a balance state when being influenced by gusts and typhoons, so that the influence of oscillation on the power generation efficiency of the fan is reduced to the minimum. The passive control system increases heave damping through the heave piece, slows down heave amplitude and speed, and provides time response for the control system to play a role.
The above-described embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. Equivalent changes and modifications of the invention will occur to those skilled in the art, and it is intended to cover the scope of the appended claims.
Claims (6)
1. Floating offshore wind power structure, its characterized in that includes:
the floating platform comprises three single-vertex pontoons, a central single-pontoon and a plurality of supporting beams, wherein the three single-vertex pontoons are three vertexes, and the upper ends and the lower ends of the three single-vertex pontoons are respectively connected by the supporting beams to form a triangular prism-shaped structure platform with an equilateral triangle cross section; the central single pontoon is arranged at the geometric center of the Mitsubishi column, and the upper end and the lower end of the central single pontoon are connected with the upper ends and the lower ends corresponding to the three vertex single pontoons through the supporting cross beam;
the wind power generation set is connected to the top end of the central single pontoon;
the mooring structure comprises six catenary chains and six anchor piles, and the tail end of each catenary chain is connected with one anchor pile; the three bracelets are connected to the lower ends of the three vertex single pontoons, and an included angle of 120 degrees is formed between the three bracelets; the other three bracelets are connected to the upper ends of the three vertex single pontoons, and an included angle of 120 degrees is formed between the other three bracelets; two catenaries connected to the upper end and the lower end of the same vertex single pontoon are in a splayed anchor state;
four hammer baffles are respectively arranged below the three vertex single pontoons and the central single pontoon.
2. The floating offshore wind structure of claim 1, wherein the diameter of the hammer baffle is no less than twice the diameter of the apex single pontoon and twice the diameter of the center single pontoon.
3. The floating offshore wind structure of claim 1, wherein each of the catenary is strung with 0-100 tons of concrete blocks.
4. The floating offshore wind power structure according to claim 1, wherein the inside of the vertex single pontoon and the inside of the center single pontoon are respectively divided into two chambers, one chamber is a fixed drainage cabin, the other chamber is an adjusting cabin, and drainage facilities are arranged in the two chambers.
5. The floating offshore wind turbine of claim 4, wherein the drainage facility is controlled by an active structural control system disposed within the wind turbine.
6. The floating offshore wind turbine structure of claim 1, wherein a combined blade pitch control system is further provided within the wind turbine, the combined blade pitch control system being connected to and controlling symmetrical thrust and torque loads on the wind rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310189658.0A CN116241416A (en) | 2023-03-02 | 2023-03-02 | Floating type offshore wind power structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310189658.0A CN116241416A (en) | 2023-03-02 | 2023-03-02 | Floating type offshore wind power structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116241416A true CN116241416A (en) | 2023-06-09 |
Family
ID=86625816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310189658.0A Pending CN116241416A (en) | 2023-03-02 | 2023-03-02 | Floating type offshore wind power structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116241416A (en) |
-
2023
- 2023-03-02 CN CN202310189658.0A patent/CN116241416A/en active Pending
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