CN113562130A - Floating fan platform with height self-balancing - Google Patents

Floating fan platform with height self-balancing Download PDF

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Publication number
CN113562130A
CN113562130A CN202110972481.2A CN202110972481A CN113562130A CN 113562130 A CN113562130 A CN 113562130A CN 202110972481 A CN202110972481 A CN 202110972481A CN 113562130 A CN113562130 A CN 113562130A
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China
Prior art keywords
cabin
platform
fan
floating
balance
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Pending
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CN202110972481.2A
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Chinese (zh)
Inventor
刘海笑
陈映宇
张玉明
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Tianjin University
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Tianjin University
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Priority to CN202110972481.2A priority Critical patent/CN113562130A/en
Publication of CN113562130A publication Critical patent/CN113562130A/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/10—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy
    • 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
    • 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
    • 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
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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)
  • Ocean & Marine Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

The invention discloses a floating type fan platform with height self-balance performance, which comprises a fan, a balance cabin, a pressure cabin and a mooring system, wherein a connecting section is connected between the balance cabin and the fan, the connecting section is a cylinder, the fan is fixed at the top of the connecting section, and the bottom of the connecting section is fixed with the top of the balance cabin. The balance cabin is a hollow round table with the diameter of the top larger than that of the bottom, and the pressure cabin is a solid disc; the balance cabin improves the floating center of the floating fan platform through the shape of the balance cabin, the pressure cabin is arranged below the balance cabin, the gravity center of the platform is reduced, the weight of the pressure cabin is reduced, meanwhile, the disc-shaped pressure cabin reduces the heaving response and the pitching response of the platform, and the pressure cabin can be connected with the floating fans of any model through the connecting section. The floating type fan platform provided by the invention has the advantages that the self-balance performance of the platform is increased, the floating type fan platform not only has excellent response performance in severe sea conditions, but also has excellent economy, and the floating type fan platform can be suitable for any water depth.

Description

Floating fan platform with height self-balancing
Technical Field
The invention relates to a wind power generation facility, in particular to a floating type fan platform with a high self-balancing property.
Background
With the gradual progress of energy development of human beings to the ocean field, a plurality of novel floating ocean platforms emerge, and the platforms are widely applied to the industry of human beings developing ocean resources at present and are responsible for various works such as drilling, production, offshore crude oil treatment, wind power generation and the like. The application range of the platform in the prior art is limited by corresponding water depth conditions, and the platform of a single type is difficult to popularize to any water depth. In order to solve the above difficulties, it is necessary to develop a new floating wind turbine platform which is suitable for any water depth and has excellent balance.
Disclosure of Invention
The existing floating type fan platform with a single type is limited by corresponding water depth conditions and has no universality. Aiming at the problem in the prior art, the invention provides a floating type fan platform which is suitable for any water depth and has high self-stability.
In order to solve the technical problem, the floating fan platform with the height self-balancing property comprises a fan, a balance cabin, a pressure cabin and a mooring system, wherein the balance cabin is arranged above the pressure cabin, the fan is arranged above the balance cabin, a connecting section is connected between the balance cabin and the fan, the connecting section is a cylinder, the fan is fixed to the top of the connecting section, and the bottom of the connecting section is fixed to the top of the balance cabin;
the balance cabin is a circular truncated cone with the diameter of the top larger than that of the bottom; the pressure chamber is a disc, and the disc-shaped pressure chamber increases the vertical damping and the pitch damping of the platform through the shape of the disc-shaped pressure chamber, so that the heave response and the pitch response of the platform are reduced; the bottom surface of the connecting section is attached to the top surface of the balance cabin, the diameter of the top of the balance cabin is larger than that of the connecting section, and the floating center of the floating fan platform is improved; the bottom surface of the balance cabin is attached to the top surface of the pressure cabin, and the diameter of the pressure cabin is larger than that of the bottom of the balance cabin, so that the gravity center of the platform is lowered; the central axes of the connecting section, the balance cabin and the pressure cabin are overlapped, one end of a mooring cable of the mooring system is fixed at the bottom of the pressure cabin, and the other end of the mooring cable is fixed on the sea bottom;
the total mass of the fan is m2The horizontal wind force borne by the center of the fan is FwThe maximum wind-leaning moment of the fan is MwThe distance between the gravity center of the fan and the bottom of the tower column is H4The inclination angle of the floating type fan platform is alpha, and the distance from the integral floating core of the floating type fan platform to the bottom of the balance cabin is PK; the height of the connecting section is H1The height of the balance cabin is H2Total mass m of floating fan platform1Satisfies the following conditions:
Figure BDA0003226223720000011
where ρ iscIs the density of the concrete, rhowIs the density of seawater; height H of connecting section1Satisfies the following conditions:
Figure BDA0003226223720000012
wherein h isfIs the heave amplitude of the floating fan platform; diameter D of the connecting section1Is larger than the diameter of the bottom of the fan; height H of the balance cabin2Satisfies the following conditions: h2≤h-H1-H3-hf-hk-0.25h, wherein h is water depth; h iskIs the vertical variation height h of the pressure chamber when the pressure chamber is inclinedk＝0.5D2sinα；D2Is the diameter of the pressure chamber, H3Is the height of the pressure chamber; diameter d of top of balance cabin1And diameter d of the bottom2The ratio of Q; the natural pitch frequency omega of the floating fan platform is as follows:
Figure BDA0003226223720000021
according to wave spectrum parameters of a target sea area, a design scheme with small natural pitching frequency of the floating type fan platform is selected as an alternative scheme, and the diameter D of the concrete pressure cabin (4) can be determined2And height H3The value range of (a).
Furthermore, the connecting section, the balance cabin and the pressure cabin are all made of reinforced concrete materials.
The balance cabin is of a hollow structure, and the pressure cabin is of a solid structure.
Compared with the prior art, the invention has the beneficial effects that:
1) the diameter of the connecting section is slightly larger than the diameter of the bottom of the floating type fan, and the smallest connecting section size is selected to be beneficial to reducing the water surface area of the platform under the condition of meeting the requirement of safely supporting the floating type fan.
2) Compared with a cylindrical hollow balance cabin with the same volume and the same height, the circular truncated cone-shaped hollow balance cabin with the diameter of the top larger than that of the bottom improves the floating center of the floating fan platform.
3) The solid pressure tank disposed below the ballast tank allows the center of gravity of the platform to be lowered thereby reducing the weight of the pressure tank and the economic cost of constructing the pressure tank.
4) The disc-shaped pressure chamber increases the vertical damping and the pitch damping of the platform through the shape of the pressure chamber, and reduces the heave response and the pitch response of the platform.
5) Because the outstanding self-balancing nature of platform, the mooring system only needs to play the effect of restriction platform bow response, and the mooring system adopts the catenary mooring can satisfy safe handling requirement, and the mooring requirement is lower.
6) The mooring line is tied at the edge of the pressure chamber, and the mooring radius can be reduced due to the larger diameter of the pressure chamber, so that the mooring cost is reduced.
Drawings
FIG. 1 is a schematic structural view of a floating wind turbine platform of the present invention;
FIG. 2 is a top view of the floating fan platform of FIG. 1;
fig. 3 is a schematic diagram of the dimensions of various portions of the floating wind turbine platform of the present invention.
In the figure, 1-fan, 2-connecting section, 3-balance cabin, 4-pressure cabin and 5-mooring system.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, which are not intended to limit the invention in any way.
As shown in fig. 1 and 2, the floating fan platform with high self-stability provided by the invention comprises a fan 1, a balance cabin 3, a pressure cabin 4 and a mooring system 5, wherein the balance cabin 3 is arranged above the pressure cabin 4, the fan 1 is arranged above the balance cabin 3, a connecting section 2 is connected between the balance cabin 3 and the fan 1, the connecting section 2 is a cylinder, the fan 1 is fixed at the top of the connecting section 2, and the bottom of the connecting section 2 is fixed with the top of the balance cabin 3. The balance cabin 3 is a circular truncated cone with the diameter of the top larger than that of the bottom; the pressure chamber 4 is a disc; the bottom surface of the connecting section 2 is attached to the top surface of the balance cabin 3, and the diameter of the top of the balance cabin 3 is larger than that of the connecting section 2; the bottom surface of the balance cabin 3 is attached to the top surface of the pressure cabin 4, the diameter of the pressure cabin 4 is larger than that of the bottom of the balance cabin 3, the central axes of the connecting section 2, the balance cabin 3 and the pressure cabin 4 coincide, the balance cabin 3 is of a hollow structure, and the pressure cabin 4 is of a solid structure. The floating type fan platform adopts the design, and based on the tumbler principle, the platform can ensure excellent self-balance performance under any water depth condition.
The invention can be connected with floating fans of any type through the connecting section 2. The connecting section 2 is used for connecting the floating fan 1 at the upper part with the balance cabin 3 at the lower part, the diameter of the connecting section 2 is slightly larger than the diameter of the bottom of the floating fan 1, and the smallest connecting section 2 is beneficial to reducing the water surface area of the platform under the condition of supporting the floating fan.
In the invention, the balance cabin 3 mainly provides buoyancy for the platform, adopts a circular truncated cone shape with the diameter of the top larger than that of the bottom, and compared with a cylindrical hollow balance cabin with the same volume and the same height, the circular truncated cone type balance cabin obviously improves the floating center of the floating fan platform.
In the present invention, the pressure chamber 4 of the platform is provided separately. Arranged below the equalization tank 3 is a pressure tank 4 of solid construction, unlike a floating platform without pressure tanks, so that the centre of gravity of the platform is lowered. The increased distance between the center of gravity and the floating center reduces the required weight of the pressure chamber 4 and thus the economic cost of construction of the pressure chamber 4, while ensuring the same stability.
According to the disc-shaped pressure chamber, the vertical damping and the pitch damping of the platform are increased through the shape of the pressure chamber, and the heave response and the pitch response of the platform are reduced.
In the invention, the used mooring mode is catenary mooring, a reserved hole for installing a mooring line is arranged at the edge of the bottom of the pressure chamber, one end of the mooring line of the mooring system 5 is fixed at the bottom of the pressure chamber 4, and the other end of the mooring line is fixed at the sea bottom. And the mooring rope used by the platform passes through the reserved hole site to complete the connection with the seabed anchoring structure.
In the invention, the connecting section 2, the balance cabin 3 and the pressure cabin 4 are all made of reinforced concrete materials, so that the material source is wide and the construction cost is low.
In the floating type fan platform, the fan 1 comprises a rotor, a cabin and a tower column, and the total mass of the fan 1 is m2The horizontal wind force borne by the center of the fan 1 is FwThe maximum wind-leaning moment of the fan 1 is MwThe distance between the gravity center of the fan and the bottom of the tower column is H4The inclination angle of the floating fan platform is alpha, and the distance from the integral floating core of the floating fan platform to the bottom of the balance cabin 3 is PK; as shown in FIG. 3, the connecting section 2 has a height H1The height of the balance cabin 3 is H2Total mass m of floating fan platform1Satisfies the following conditions:
Figure BDA0003226223720000031
where ρ iscIs the density of the concrete, rhowIs the density of seawater;
height H of connecting section 21Satisfies the following conditions:
Figure BDA0003226223720000032
wherein h isfIs the heave amplitude of the floating fan platform;
diameter D of the connecting section 21Is larger than the diameter of the bottom of the fan;
height H of the balance cabin 32The safety of the platform under extreme environmental load is ensured, namely the bottom of the platform is not contacted with the surface of the sea bed, and the total draught of the platform is less than the water depth h and the heave amplitude hfA reserved safe distance of 0.25h and a vertical change height h when the pressure chamber inclineskSum, therefore, H should be satisfied2≤h-H1-H3-hf-hk0.25h, wherein hk＝0.5D2sinα。
D2Is the diameter of the pressure chamber 4, H3The height of the pressure chamber 4; diameter d of top of balance cabin 31And diameter d of the bottom2The ratio of Q; diameter D of pressure tank2Height H3And natural frequency of pitch of the vessel:
Figure BDA0003226223720000041
because the natural frequency of the platform pitching should avoid the high energy range of the waves, a scheme meeting the requirements can be obtained according to the wave spectrum parameters of the target sea area, and then a design scheme with smaller platform natural frequency is selected as an alternative scheme, namely the diameter D of the concrete pressure chamber can be determined2Height H3The value range of (a).
While the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are illustrative only and not restrictive, and various modifications which do not depart from the spirit of the present invention and which are intended to be covered by the claims of the present invention may be made by those skilled in the art.

Claims (3)

1. A floating fan platform with height self-balancing performance comprises a fan (1), a balance cabin (3), a pressure cabin (4) and a mooring system (5), wherein the balance cabin (3) is arranged above the pressure cabin (4), the fan (1) is arranged above the balance cabin (3), the floating fan platform is characterized in that a connecting section (2) is connected between the balance cabin (3) and the fan (1), the connecting section (2) is a cylinder, the fan (1) is fixed at the top of the connecting section (2), and the bottom of the connecting section (2) is fixed with the top of the balance cabin (3);
the balance cabin (3) is a circular truncated cone with the diameter of the top larger than that of the bottom; the pressure chamber (4) is a disc, and the disc-shaped pressure chamber (4) increases the vertical damping and the pitch damping of the platform through the shape of the disc-shaped pressure chamber, so that the heave response and the pitch response of the platform are reduced; the bottom surface of the connecting section (2) is attached to the top surface of the balance cabin (3), the diameter of the top of the balance cabin (3) is larger than that of the connecting section (2), and the floating center of the floating fan platform is improved; the bottom surface of the balance cabin (3) is attached to the top surface of the pressure cabin (4), and the diameter of the pressure cabin (4) is larger than that of the bottom of the balance cabin (3), so that the gravity center of the platform is lowered; the central axes of the connecting section (2), the balance cabin (3) and the pressure cabin (4) are overlapped, one end of a mooring cable of the mooring system (5) is fixed at the bottom of the pressure cabin (4), and the other end of the mooring cable is fixed at the sea bottom;
the total mass of the fan (1) is m2The horizontal wind power borne by the center of the fan (1) is FwThe maximum wind-leaning moment of the fan (1) is MwThe distance between the gravity center of the fan and the bottom of the tower column is H4The inclination angle of the floating fan platform is alpha, and the distance from the integral floating core of the floating fan platform to the bottom of the balance cabin (3) is PK; the height of the connecting section (2) is H1The height of the balance cabin (3) is H2Total mass m of floating fan platform1Satisfies the following conditions:
Figure FDA0003226223710000011
where ρ iscIs the density of the concrete, rhowIs the density of seawater;
height H of the connecting section (2)1Satisfies the following conditions:
Figure FDA0003226223710000012
wherein h isfIs the heave amplitude of the floating fan platform;
diameter D of the connecting section (2)1Is larger than the diameter of the bottom of the fan;
height H of the balance cabin (3)2Satisfies the following conditions: h2≤h-H1-H3-hf-hk-0.25h, wherein h is water depth; h iskIs the vertical height change h of the pressure chamber (4) when the pressure chamber is inclinedk＝0.5D2sinα；
D2Is the diameter of the pressure chamber (4), H3Is the height of the pressure chamber (4); diameter d of top of balance cabin (3)1And diameter d of the bottom2The ratio of Q; the natural pitch frequency omega of the floating fan platform is as follows:
Figure FDA0003226223710000013
according to wave spectrum parameters of a target sea area, a design scheme with small natural pitching frequency of the floating type fan platform is selected as an alternative scheme, and the diameter D of the concrete pressure cabin (4) can be determined2And height H3The value range of (a).
2. The floating wind turbine platform with high self-balancing according to claim 1, characterised in that the connection section (2), the balancing tank (3) and the pressure tank (4) are made of reinforced concrete material.
3. The floating wind turbine platform of claim 2, wherein: the balance cabin (3) is of a hollow structure, and the pressure cabin (4) is of a solid structure.
CN202110972481.2A 2021-08-24 2021-08-24 Floating fan platform with height self-balancing Pending CN113562130A (en)

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Publication number Priority date Publication date Assignee Title
PL395163A1 (en) * 2011-06-07 2012-12-17 Vistal Wind Power Spólka Z Ograniczona Odpowiedzialnoscia Offshore wind turbine and method for construction of offshore wind turbine
CN203439238U (en) * 2013-07-22 2014-02-19 中船重工建筑工程设计研究院有限责任公司 Novel spar floating type offshore wind power platform
KR101840649B1 (en) * 2017-11-20 2018-03-21 알렌 주식회사 A buoyant system of floating electricity generation platform
CN108583795A (en) * 2018-05-14 2018-09-28 重庆大学 A kind of semi-submersible type offshore wind turbine platform
CN109278949A (en) * 2018-10-10 2019-01-29 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） A kind of sea Spar type 5MW buoyant wind generation platform
CN110712724A (en) * 2019-10-15 2020-01-21 天津大学 Floating type fan platform with high self-stability
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Publication number Priority date Publication date Assignee Title
PL395163A1 (en) * 2011-06-07 2012-12-17 Vistal Wind Power Spólka Z Ograniczona Odpowiedzialnoscia Offshore wind turbine and method for construction of offshore wind turbine
CN203439238U (en) * 2013-07-22 2014-02-19 中船重工建筑工程设计研究院有限责任公司 Novel spar floating type offshore wind power platform
KR101840649B1 (en) * 2017-11-20 2018-03-21 알렌 주식회사 A buoyant system of floating electricity generation platform
CN108583795A (en) * 2018-05-14 2018-09-28 重庆大学 A kind of semi-submersible type offshore wind turbine platform
CN109278949A (en) * 2018-10-10 2019-01-29 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） A kind of sea Spar type 5MW buoyant wind generation platform
FR3088298A1 (en) * 2018-11-08 2020-05-15 Dietswell ARTICULATED FLOAT FOR A FLOATING PLATFORM, PARTICULARLY FOR A FLOATING WIND TURBINE.
CN110712724A (en) * 2019-10-15 2020-01-21 天津大学 Floating type fan platform with high self-stability

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Title
中国及多国专利审查信息查询，公众查询，2019109780317: "一种具有高度自稳性的浮式风机平台", 《国家知识产权局官网》 *

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Application publication date: 20211029