CN110203342A - 多立柱漂浮式风力发电装置 - Google Patents

多立柱漂浮式风力发电装置 Download PDF

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CN110203342A
CN110203342A CN201910482000.2A CN201910482000A CN110203342A CN 110203342 A CN110203342 A CN 110203342A CN 201910482000 A CN201910482000 A CN 201910482000A CN 110203342 A CN110203342 A CN 110203342A
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wind power
stand column
trussmember
edge
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何炎平
吴浩宇
赵永生
阳杰
陈哲
刘亚东
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Shanghai Jiaotong University
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Priority to PCT/CN2020/093680 priority patent/WO2020244476A1/zh
Priority to US17/541,120 priority patent/US20220128035A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B63B1/125Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising more than two hulls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D13/00Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/25Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B63B1/125Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising more than two hulls
    • B63B2001/126Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising more than two hulls comprising more than three hulls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B63B2001/128Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising underwater connectors between the hulls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/442Spar-type semi-submersible structures, i.e. shaped as single slender, e.g. substantially cylindrical or trussed vertical bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4433Floating structures carrying electric power plants
    • B63B2035/446Floating structures carrying electric power plants for converting wind energy into electric energy
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/90Mounting on supporting structures or systems
    • F05B2240/93Mounting on supporting structures or systems on a structure floating on a liquid surface
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/90Mounting on supporting structures or systems
    • F05B2240/97Mounting on supporting structures or systems on a submerged structure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00Function
    • F05B2260/30Retaining components in desired mutual position
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/727Offshore wind turbines

Abstract

本发明提供了一种多立柱漂浮式风力发电装置,包括风力发电机组、立柱装置、桁架构件、横撑以及系泊系统,其中:立柱装置分为边立柱和中心立柱,边立柱和中心立柱之间主要通过横撑连接;风力发电机组设置在中心立柱装置上;所述桁架构件设置在所述立柱装置上,并对立柱装置进行连接和支撑;所述系泊系统连接所述立柱装置的边立柱。本发明采用位于水线面以下倾斜的圆柱形横撑,用来提供一定的浮力和使得整体浮心上移,并减小边立柱的排水体积需求,从而减小边立柱直径和获得良好的水动力性能。边立柱下端采用较大直径的柱靴作为固定压载舱,具有使整体重心降低到低于浮心和增加垂荡阻尼的功能。

Description

多立柱漂浮式风力发电装置
技术领域
本发明涉及浮式基础领域,具体地,涉及一种多立柱漂浮式风力发电装置。
背景技术
目前常见的浮式基础主要包括Spar(单柱)型浮式基础、半潜型浮式基础以及TLP(张力腿)型浮式基础。与本专利最接近的技术是Spar型浮式基础和半潜型浮式基础。Spar型浮式基础为圆柱体形状,结构简单,通过压载使重心低于浮心,水动力性能较好。半潜型浮式基础具备间距较大的立柱,可提供一定的复原力矩,且吃水较小。
现有技术的不足之处是:Spar型浮式基础吃水较大,一般达到80m以上,所以不适合用于水深相对较浅的海域,而且其较小的水线面积导致水线面惯性矩较小,无法贡献横摇和纵摇的稳性。半潜型浮式基础结构相对Spar型浮式基础较复杂,而且立柱直径通常较大,这就导致波浪载荷和运动响应均较大。
经对现有技术的文献检索发现,根据文献“Fukushima Floating Offshore WindFarm Demonstration Project(Fukushima FORWARD)Construction of Phase II”(可从http://www.fukushima-forward.jp/english/pdf/pamphlet5.pdf下载),为解决Spar型浮式基础由于吃水较大而无法应用于50m水深的问题,日本福岛风电场设计团队设计了一种吃水为33m的Advanced Spar,然而其水线面处结构直径为51m,水线面积较大,这就导致结构所受波浪载荷较大,影响运动性能,并且不便于制造与安装,也影响了经济效益。
申请号为201110175440.7的发明专利公开了一种漂浮于海上的风力发电机,具体涉及一种风力发电机结构的改进。该发明就是提供一种使用效率高、节省占地、摆放面积不受限制的漂浮于海上的风力发电机。该发明包括立柱,立柱上设置有发电机,发电机的轴上设置有叶片,其结构要点在于立柱设置在底座上。但是上述专利没有采取措施降低重心,水线面形状复杂和面积大,水动力性能差。
发明内容
针对现有技术中的缺陷,本发明目的是提供一种多立柱漂浮式风力发电装置。
根据本发明提供的一种多立柱漂浮式风力发电装置,包括风力发电机组、立柱装置、桁架构件、横撑以及系泊系统,其中:
立柱装置之间通过横撑连接;
风力发电机组设置在立柱装置上;
所述桁架构件设置在所述立柱装置上,并对立柱装置进行固定;
所述系泊系统连接所述立柱装置。
优选地,所述立柱装置包括中心立柱和多个边立柱,所述中心立柱和边立柱之间通过横撑连接,所述多个边立柱等间距分布在所述中心立柱的周向。
优选地,所述风力发电机组设置在所述中心立柱上。
优选地,多个边立柱和所述中心立柱平行设置,且多个边立柱和所述中心立柱的距离相同。
优选地,还包括柱靴,所述柱靴安装在所述边立柱的底部。
优选地,所述桁架构件包括第一桁架构件和第二桁架构件,其中:
第一桁架构件一端连接中心立柱,另一端连接柱靴;
第二桁架构件两端分别连接沿周向相邻的边立柱的柱靴。
优选地,所述横撑、第一桁架构件均与水平面之间存在角度,所述第二桁架构件与水平面平行。
优选地,边立柱、横撑、第一桁架构件、第二桁架构件的数量均为3个;
相邻横撑的夹角为120°;
相邻第一桁架构件的夹角为120°;
相邻第二桁架构件的夹角为60°。
优选地,所述中心立柱的底面高于边立柱的底面。
优选地,所述立柱装置、桁架构件均呈圆柱状设置。
与现有技术相比,本发明具有如下的有益效果:
1、本发明通过采用结构简单的圆柱形状构件,从而便于制造;又可减小所受波浪载荷,因而适应多种海况;
2、本发明通过采用倾斜的第一桁架构件,位于浮式基础整体吃水一半的上方,既可提供一定的浮力,使得整体浮心上移,又可减小边立柱的排水体积需求,从而减小边立柱直径和获得良好的水动力性能;
3、本发明通过采用长度较短的立柱,从而既适用于深海,又解决了Spar型浮式基础由于吃水较大,无法适用于50m水深的海域的问题;
4、本发明通过采用直径较小的立柱,从而一方面减小水线面面积,进而减小所受波浪力;另一方面减小制造成本,也便于安装;
5、本发明通过采用包围中心立柱的边立柱,从而保护了从中心立柱底端引出的电缆。
6、本发明通过采用位于最底端的含有压载的柱靴,从而使得重心低于浮心,浮式基础水动力性能良好。
附图说明
通过阅读参照以下附图对非限制性实施例所作的详细描述,本发明的其它特征、目的和优点将会变得更明显:
图1为多立柱漂浮式风力发电装置的立体图;
图2为多立柱漂浮式风力发电装置的主视图;
图3为多立柱漂浮式风力发电装置的俯视图;
图4为多立柱漂浮式风力发电装置的侧视图;
图5为多立柱漂浮式风力发电装置的立柱装置、横撑、以及桁架构件的结构示意图。
图中示出:
1-风力发电机组
2-中心立柱
3-边立柱
4-横撑
5-柱靴
6-桁架构件
7-系泊系统
具体实施方式
下面结合具体实施例对本发明进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本发明,但不以任何形式限制本发明。应当指出的是,对本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变化和改进。这些都属于本发明的保护范围。
如图1至图5所示,根据本发明提供的一种多立柱漂浮式风力发电装置,包括:风力发电机组1、中心立柱2、边立柱3、横撑4、柱靴5、桁架结构6和系泊系统7。其中,风力发电机组1固定设置于中心立柱2上,边立柱3的中部和底部分别与系泊系统7和柱靴5相连,横撑4的两端分别与中心立柱2和边立柱3相连,桁架结构6分为两组,一组连接中心立柱2和柱靴5,一组连接相邻的柱靴5,系泊系统7一端通过导缆孔与边立柱3连接,一端通过锚泊点与海底连接。
中心立柱2、边立柱3、横撑4、柱靴5构成支持风力发电机组1的浮式基础,它们均为圆柱形状,一方面结构简单,便于制造;另一方面可减小所受波浪载荷,因而适应多种海况。
所述风力发电机组1为水平轴或垂直轴式风力发电机组1,所述中心立柱2用于支撑上方的风力发电机组1。所述边立柱3,个数等于3,外形相同,对称布置于中心立柱周围,相互之间的夹角为60度,主要用于提供浮力,每个边立柱3和系泊系统7相连接以限制所述海上风力发电装置的六自由度运动。边立柱3中间用防水板隔成多个小舱室,以提高抗沉性。
所述中心立柱2和边立柱3的长度均较短,作为优选地,中心立柱2水下长度为25m,边立柱3水下长度为30m。使得浮式基础适用的水深较广,其中中心立柱2长度小于边立柱3长度,以提高浮心。
所述横撑4个数等于3,连接中心立柱2和边立柱3,作为支持结构,增强结构稳定性。三个横撑4相互呈120度角对称布置,均位于浮式基础整体吃水一半的上方,以提高整体浮心。横撑4具备一定的长度,当浮式基础受外力作用倾斜时,可提供一定的复原力矩,促使其回到初始平衡位置。横撑4为倾斜布局,在浮式基础正浮时,连接中心柱一端较高,连接边立柱一端较低,与水平面成一定夹角,为10度左右,以避免因浮式基础发生倾斜而露出水线面,造成整体浮力损失。
所述柱靴5共有三个,位于相应的边立柱3下方,里面布置矿砂或其他压载,使浮式基础整体的重心低于浮心。柱靴5相较于边立柱,直径较大,可起到类似垂荡板的作用,以增大垂荡阻尼。
所述桁架结构6分为两组,每组各三个。位于上方的一组,每个桁架结构6之间的夹角为120度,两端分别连接中心立柱2最下方和边立柱3最下方,位于下方的一组,每个桁架结构6之间的夹角为60度,两端分别连接相邻的柱靴5。桁架结构6有着连接结构,并且增强结构强度的作用。
所述系泊系统7可为悬链式或斜拉张紧式,在本实施例中,系泊系统7采用三根对称布置,相互呈120度角的悬链线式锚链,用于限制所述海上风力发电装置的六自由度运动。
图5为未加载重物时,多立柱漂浮式风力发电装置的吃水深度示意图,由图5可以看出,未加压载物的多立柱漂浮式风力发电装置仍具备一定吃水深度。
在具体实施过程中,可以先分段预制各结构构件,在干船坞中拼装完毕之后,由于未加压载物的浮式基础仍具备一定吃水和稳性,可由拖轮拖航至目标海域。由于本实施例中,压载物采用密度为4吨每立方米的矿砂,可以在到达安装地点之后再进行灌装,方便浮式基础的运输,也能实现浮式基础下水的扶正。最后进行系泊系统7和风力发电机组1的安装。
本发明采用位于水线面以下倾斜的圆柱形横撑4,用来提供一定的浮力和使得整体浮心上移,并减小边立柱3的排水体积需求,从而减小边立柱3直径和获得良好的水动力性能。边立柱3下端采用较大直径的柱靴5作为固定压载舱,具有使整体重心降低到低于浮心和增加垂荡阻尼的功能。
以上对本发明的具体实施例进行了描述。需要理解的是,本发明并不局限于上述特定实施方式,本领域技术人员可以在权利要求的范围内做出各种变化或修改,这并不影响本发明的实质内容。在不冲突的情况下,本申请的实施例和实施例中的特征可以任意相互组合。

Claims (10)

1.一种多立柱漂浮式风力发电装置,其特征在于,包括风力发电机组、立柱装置、桁架构件、横撑以及系泊系统,其中:
立柱装置的边立柱和中心立柱之间主要通过横撑连接;
风力发电机组设置在立柱装置的中心立柱上;
所述桁架构件设置在所述立柱装置上,并对立柱装置进行固定;
所述系泊系统连接所述立柱装置的边立柱。
2.根据权利要求1所述的多立柱漂浮式风力发电装置,其特征在于,所述立柱装置包括中心立柱和多个边立柱,所述中心立柱和边立柱之间通过横撑连接,所述多个边立柱等间距分布在所述中心立柱的周边。
3.根据权利要求2所述的多立柱漂浮式风力发电装置,其特征在于,所述风力发电机组设置在所述中心立柱上。
4.根据权利要求2所述的多立柱漂浮式风力发电装置,其特征在于,多个边立柱和所述中心立柱平行设置,且多个边立柱和所述中心立柱的距离相同。
5.根据权利要求2所述的多立柱漂浮式风力发电装置,其特征在于,还包括柱靴,所述柱靴安装在所述边立柱的底部。
6.根据权利要求5所述的多立柱漂浮式风力发电装置,其特征在于,所述桁架构件包括第一桁架构件和第二桁架构件,其中:
第一桁架构件一端连接中心立柱,另一端连接柱靴;
第二桁架构件两端分别连接沿周向相邻的边立柱的柱靴。
7.根据权利要求6所述的多立柱漂浮式风力发电装置,其特征在于,所述横撑、第一桁架构件均与水平面之间存在角度,所述第二桁架构件与水平面平行。
8.根据权利要求6所述的多立柱漂浮式风力发电装置,其特征在于:
边立柱、横撑、第一桁架构件、第二桁架构件的数量均为3个;
相邻横撑的夹角为120°;
相邻第一桁架构件的夹角为120°;
相邻第二桁架构件的夹角为60°。
9.根据权利要求2所述的多立柱漂浮式风力发电装置,其特征在于,所述中心立柱的底面高于边立柱的底面。
10.根据权利要求1所述的多立柱漂浮式风力发电装置,其特征在于,所述立柱装置、桁架构件均呈圆柱状设置。
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