CN203498471U - 具有防腐蚀结构的风力涡轮机叶片和使用该叶片的风力涡轮机 - Google Patents
具有防腐蚀结构的风力涡轮机叶片和使用该叶片的风力涡轮机 Download PDFInfo
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Abstract
本实用新型涉及具有防腐蚀结构的风力涡轮机叶片和使用该叶片的风力涡轮机,所述风力涡轮机叶片在根部具有用于连接所述风力涡轮机叶片与轮毂的连接部,所述根部设置有多个围绕所述根部间隔开的延伸到所述叶片中的插入物,由此能够实现叶片与轮毂之间的连接,所述插入物具有露出的末端面并且由第一类型的金属形成,其特征在于:第二类型的金属的附加部分与所述插入物连接;所述第二类型的金属比所述第一类型的金属更具电化学活性,由此使得所述附加部分形成牺牲阳极。
Description
技术领域
本发明涉及具有防腐蚀结构(例如,叶根(blade root))的风力涡轮机叶片和具有该风力涡轮机叶片的风力涡轮机。
背景技术
典型地,将诸如叶片、机舱(nacelle)、塔架或轮毂等风力涡轮机的主要组件运送到安装地点并安装在那里。允许互连的这些组件的连接部对于与其他组件的安全连接是至关重要的,但其通常容易受到外部环境的影响,因此在工厂中这些连接部通常被各种手段(例如,油、覆盖物等)保护,然后暴露在安装地点。
不过,当组件到达安装地点并随后移除连接部当前的防腐蚀结构时,即使安装时间很短也可能会出现少量的腐蚀。鉴于风力涡轮机的设计寿命为20年以上,安装时即使是少量的腐蚀也是不期望的,特别是对于环境特别苛刻的海上项目,安装过程中的腐蚀问题是存有疑问的。
作为一个实例,叶片通常经由固定在叶片根部(blade root section)中的插入物而与轮毂连接。即使插入物中存在有少量的腐蚀,当将叶片安装在轴承上时,也存在腐蚀将在插入物的末端面和/或插入物与轴承表面之间的熔合线(bond line)生长的风险。这将降低连接的强度。对于插入物,可以使用不锈钢,不过由于对于大的叶片需要使用大量的插入物,因此成本将显著增加。
发明内容
本发明的一个目的是至少部分地克服现有技术的上述不利和缺点,并提供改进的防腐蚀结构。
上述目的,连同众多的其他目的、优点和特征一同将由以下的说明而变得显而易见,所述目的通过本发明所述的方案得以实现,所述方案为:一种风力涡轮机叶片,所述风力涡轮机叶片在根部具有用于连接所述风力涡轮机叶片与轮毂的连接部,所述 根部设置有多个围绕所述根部间隔开的延伸到所述叶片中的插入物,由此能够实现叶片与轮毂之间的连接,所述插入物具有露出的末端面并且由第一类型的金属形成,其中,由第二类型的金属形成的附加部分与所述插入物连接;并且所述第二类型的金属比所述第一类型的金属更具电化学活性,由此使得所述附加部分形成牺牲阳极。
所述插入物通常是固定在叶片根部末端中的钢或铁插入物。这些插入物被安装在叶片根部末端的孔中,并利用粘合剂而固定在所述孔中。防止插入物受到腐蚀对于叶片连接的强度是重要的。在一个实施方式中,所述插入物在毗邻其露出面的末端区域为圆柱形,所述附加部分为固定在圆柱形表面外侧的环形。
在一个实施方式中,在所述插入物与所述叶片根部之间提供粘合剂以使所述插入物固定于其中,并且所述环被设置在所述插入物与所述叶片根部的面向外部环境的边界处;所述环与所述叶片根部之间的边界也覆盖有粘合剂,从而防止水/湿气等通过在所述环与所述叶片根部之间的所述边界而与所述插入物接触。
所述第一类型的金属可以为钢或铁,所述第二类型的金属可以为锌、铝或镁。
本发明还涉及将整合有上述组件的风力涡轮机。
附图说明
以下将参考示意性附图而更详细地描述本发明及其许多优点,为了说明的目的,附图显示了一些非限制性的实施方式,图中:
图1示意性地示出了风力涡轮机;
图2示意性地示出了涡轮机叶片的连接部的侧视图;
图3示例性地说明了根据本发明一个实施方式的插入物的布置的截面;和
图4示例性地说明了腐蚀发生时钢插入物与锌环之间的相互作用的原理。
所有的附图均是示意性的,不必按比例绘制,并且这些附图仅仅显示了阐明本发明所必需的那些部分,省略了其他部分或仅是提到了这些部分。
具体实施方式
图1示出了风力涡轮机1,其包括风力涡轮机塔架2和布置在塔架2的顶部上的风力涡轮机机舱3。风力涡轮机转子4包括至少一个风力涡轮机叶片,例如,图中所示的三个风力涡轮机叶片5。转子安装在轮毂6上,轮毂通过延伸出机舱前端的低速 轴与机舱3连接。根据风力涡轮机是岸上类型或海上类型风力涡轮机塔架2竖立在处于地平面或者海平面8的底座7上。
图2示出了叶片根部11,插入物12环绕地(circumferentially)设置在根部中以用于连接叶片与轮毂。在该实例中,各插入物由诸如钢等金属制成。然而,也可以使用其他金属材料。
图3示出了插入物布置的截面,其中每一个插入物12固定在叶片根部11中的各个孔中,并在二者之间提供高强度的粘合剂13以使插入物12固定在其中。根据本发明的一个实施方式,插入物12在毗邻其露出面的末端区域为圆柱形,防腐蚀结构以安装在每一个插入物12末端的外侧上的金属环14的形式提供,材料经选择以提供阴极保护。因此,为了产生阴极保护,环14的材料比插入物12的材料更具电化学活性。在优选的形式中,环14由锌(Zn)制成,不过应当理解,可以使用具有适宜的电气属性的所有其他金属材料。环14将充当牺牲阳极,以提供对露出的末端面,尤其是插入物12与叶片根部11中的孔之间的熔合线的腐蚀保护。
为了进一步提高防腐蚀效果,环14可以部分覆盖有粘合剂以防止水/湿气进入到插入物12与叶片根部11中的孔之间的熔合线中。作为优选的形式,如图3所示,在插入物12与叶片根部11之间提供粘合剂13以固定插入物12,环14被设置在插入物12与叶片根部11的面向外部环境的边界处。环14能够可以至少部分嵌埋在插入物12和叶片根部11之间的边界中,如图3所示。然后,环14与叶片根部11之间的边界也覆盖有粘合剂,从而防止水/湿气等通过环14与叶片根部11之间的边界而与插入物12接触。
图4通过示例性显示钢插入物12与牺牲锌环14之间的相互作用而图示了阴极保护的基本原理。当表面的水存在于插入物12的露出末端上时,在空气的存在下,钢插入物和牺牲阳极将充当电路,锌失去电子并作为锌阳离子进入溶液。锌原子所释放的电子通过金属导电流向金属传导至钢,在此处溶解的氧因获得了锌释放的电子而被还原成氢氧根阴离子。
尽管优选使用锌阳极,不过只要相比于钢或铁插入物更具有电活性,且容易获得并且低廉,也可以使用其他金属,如铝或镁。
此外,取决于防腐蚀的特定需要,以及牺牲阳极的形状、尺寸和位置等,可以改变牺牲阳极或使其补充有附加部分。
此外,虽然以上的实施方式仅仅描述了叶根的连接部的阴极保护,不过本发明并不限于叶根连接部;而是,其可以应用于存在相同需求的其他组件,特别是,在安装之前一部分暴露在外的其他组件,例如,塔架连接部、塔架与机舱之间的连接部,以及机舱与轮毂之间的连接部,等等。
尽管以上已经关于本发明的优选实施方式描述了本发明。不过对于本领域的技术人员将是显而易见的是,在无需背离由以下权利要求所限定的本发明的条件下即可以想到若干修改。
Claims (6)
1.一种风力涡轮机叶片,所述风力涡轮机叶片在根部具有用于连接所述风力涡轮机叶片与轮毂的连接部,所述根部设置有多个围绕所述根部间隔开的延伸到所述叶片中的插入物,由此能够实现叶片与轮毂之间的连接,所述插入物具有露出的末端面并且由第一类型的金属形成,其特征在于:
第二类型的金属的附加部分与所述插入物连接;所述第二类型的金属比所述第一类型的金属更具电化学活性,由此使得所述附加部分形成牺牲阳极。
2.如权利要求1所述的风力涡轮机叶片,其中,
所述插入物在毗邻其露出面的末端区域为圆柱形,所述附加部分为固定在圆柱形表面外侧的环形。
3.如权利要求2所述的风力涡轮机叶片,其中,所述环形的附加部分至少部分嵌埋在叶根中。
4.如权利要求1所述的风力涡轮机叶片,其中,
在所述插入物与所述叶片根部之间提供粘合剂以将所述插入物固定在其中,所述附加部分被设置在所述插入物与所述叶片根部的面向外部环境的边界处;并且
所述附加部分与所述叶片根部之间的所述边界也覆盖有粘合剂,从而防止水/湿气等通过所述附加部分与所述叶片根部之间的所述边界而与所述插入物接触。
5.如权利要求1所述的风力涡轮机叶片,其中,
所述第一类型的金属是钢或铁,所述第二类型的金属是锌、铝或镁。
6.一种风力涡轮机,所述风力涡轮机具有如权利要求1所述的风力涡轮机叶片。
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Application Number | Priority Date | Filing Date | Title |
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US201161437035P | 2011-01-28 | 2011-01-28 | |
DKPA201170053 | 2011-01-28 | ||
DKPA201170053 | 2011-01-28 | ||
US61/437,035 | 2011-01-28 | ||
PCT/DK2011/050494 WO2012100772A1 (en) | 2011-01-28 | 2011-12-19 | Wind turbine component having a corrosion protection structure, and wind turbine having the same |
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CN203498471U true CN203498471U (zh) | 2014-03-26 |
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US (1) | US9631602B2 (zh) |
EP (1) | EP2668314B1 (zh) |
CN (1) | CN203498471U (zh) |
WO (1) | WO2012100772A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106870285A (zh) * | 2017-04-01 | 2017-06-20 | 上海源紊新能源科技有限公司 | 一种风能发电装置 |
CN110219777A (zh) * | 2018-03-01 | 2019-09-10 | 西门子歌美飒可再生能源公司 | 用于风力涡轮机中的腐蚀防护的方法和风力涡轮机 |
Families Citing this family (7)
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GB201406327D0 (en) | 2014-04-08 | 2014-05-21 | Vestas Wind Sys As | Wind turbine blade manufacture |
EP2952738A1 (en) * | 2014-06-05 | 2015-12-09 | Siemens Aktiengesellschaft | A root bushing for a blade root of a wind turbine rotor blade, a blade root, a wind turbine rotor blade, a wind turbine and a method for manufacturing a root bushing |
DK178855B1 (en) * | 2015-05-18 | 2017-04-03 | Vestas Wind Sys As | Blade root insert and method of manufacture |
US9970304B2 (en) | 2015-07-22 | 2018-05-15 | General Electric Company | Rotor blade root assembly for a wind turbine |
US10060411B2 (en) | 2015-07-22 | 2018-08-28 | General Electric Company | Rotor blade root assembly for a wind turbine |
CN105154887B (zh) * | 2015-09-16 | 2017-06-16 | 哈尔滨工业大学 | 钢混结构强制电流阴极腐蚀控制系统优化设计方法 |
EP4239186A1 (en) * | 2022-03-02 | 2023-09-06 | LM Wind Power A/S | Fastener assembly, wind turbine hub assembly and related methods |
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US4445989A (en) | 1982-08-11 | 1984-05-01 | The United States Of America As Represented By The Secretary Of The Army | Ceramic anodes for corrosion protection |
US4915590A (en) * | 1987-08-24 | 1990-04-10 | Fayette Manufacturing Corporation | Wind turbine blade attachment methods |
WO1992002664A1 (en) | 1990-08-10 | 1992-02-20 | Nakagawa Corrosion Protecting Co., Ltd. | Anode member to be electrically charged for preventing corrosion of reinforced concrete and electric corrosion preventive method employing said member |
US6562206B2 (en) * | 2001-05-31 | 2003-05-13 | Johnson Outdoors Inc. | Anode assembly |
DE20203372U1 (de) * | 2002-03-04 | 2002-06-20 | Imo Ind Momentenlager Stoll & | Drehlagerung für der Feuchtigkeit ausgesetzte Anlagen |
US7230347B2 (en) * | 2005-10-14 | 2007-06-12 | General Electric Company | Corrosion protection for wind turbine units in a marine environment |
DE102006058668A1 (de) * | 2006-12-13 | 2008-06-19 | Kleinsorge Verbindungstechnik Gmbh | Ankerstange, Verfahren zur Herstellung einer Ankerstange und Windkraftanlage |
DE102007014861C5 (de) | 2007-03-26 | 2024-06-20 | Siemens Gamesa Renewable Energy Service Gmbh | Verbindung von Bauteilen einer Windenergieanlage |
EP2067913A2 (de) * | 2007-12-04 | 2009-06-10 | WeserWind GmbH | Gitterstruktur eines Offshore-Bauwerks, insbesondere einer Offshore-Windenergieanlage |
DK2674612T3 (en) * | 2012-06-11 | 2017-01-23 | Alstom Renewable Technologies | Wing for a wind turbine |
-
2011
- 2011-12-19 WO PCT/DK2011/050494 patent/WO2012100772A1/en active Application Filing
- 2011-12-19 US US13/982,193 patent/US9631602B2/en active Active
- 2011-12-19 CN CN201190001037.6U patent/CN203498471U/zh not_active Expired - Lifetime
- 2011-12-19 EP EP11804630.9A patent/EP2668314B1/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106870285A (zh) * | 2017-04-01 | 2017-06-20 | 上海源紊新能源科技有限公司 | 一种风能发电装置 |
CN110219777A (zh) * | 2018-03-01 | 2019-09-10 | 西门子歌美飒可再生能源公司 | 用于风力涡轮机中的腐蚀防护的方法和风力涡轮机 |
Also Published As
Publication number | Publication date |
---|---|
WO2012100772A1 (en) | 2012-08-02 |
EP2668314B1 (en) | 2015-10-14 |
US9631602B2 (en) | 2017-04-25 |
EP2668314A1 (en) | 2013-12-04 |
US20140023511A1 (en) | 2014-01-23 |
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