CN101994642B - 不同铸造铝合金制成的风电机叶片 - Google Patents

不同铸造铝合金制成的风电机叶片 Download PDF

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CN101994642B
CN101994642B CN2009101019606A CN200910101960A CN101994642B CN 101994642 B CN101994642 B CN 101994642B CN 2009101019606 A CN2009101019606 A CN 2009101019606A CN 200910101960 A CN200910101960 A CN 200910101960A CN 101994642 B CN101994642 B CN 101994642B
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blade
different
leaf
tripe
cast aluminium
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CN101994642A (zh
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石孟成
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Zhejiang Hengtong Machinery Co Ltd
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Abstract

本发明公开了一种不同铸造铝合金制成的风电机叶片，属于风力发电设备零部件领域。采用单一铝合金材料铸造制成叶片，对于长叶片会影响叶片的运转性能，本发明特点是将叶片分成至少两部分，每一部分采用不同的铸造铝合金，相邻两部分之间形成构成该两部分的铸造铝合金的熔合区，使叶片各部分具有不同的性能，能够更好的满足长叶片运转需要。

Description

不同铸造铝合金制成的风电机叶片
技术领域
本发明属于风力发电设备零部件领域，尤其与一种不同铸造铝合金制成的风电机叶片有关。
背景技术
叶片是风力发电机中最基础和最关键的部件，目前世界风力发电进一步向大功率、长叶片方向发展，叶片单体长度已达到了60米以上。叶片所处的恶劣环境和长期不停的运转，对叶片提出了严格的技术性能和质量要求：比重轻且具有最佳的疲劳强度和机械性能，能经受暴风等极端恶劣条件和随机负荷的考验；叶片的弹性、旋转时的惯性及其振动频率特性曲线都正常，传递给整个发电系统的负荷稳定性好；耐腐蚀、紫外线照射和雷击的性能好；发电成本较低，维护费用低。
为适应上述要求，叶片的制造材料从木制叶片、布蒙皮叶片等发展到了目前大型风力发电机叶片普遍采用玻璃纤维增强聚酯树脂叶片、玻璃纤维增强环氧树脂叶片和碳纤维增强环氧树脂叶片，但这些材料制成的叶片重量较重，导电性差导致防雷击性能差，对于超大型风力发电机叶片的发展仍然受到限制，并且碳纤维增强环氧树脂叶片造价昂贵，玻璃钢环氧树脂、碳纤维等材料在原料制造过程中污染大，原料来源不可再生。为解决这些问题，本发明人提出了叶片采用铸造铝合金铸造制成的方法制造，铸造铝合金主要分为铝镁合金、铝铜合金、铝硅合金和铝锌合金，不同合金成分的铸造铝合金的性能特性不同，而叶片从叶根至叶尖各部分运转特点不同导致各部分受力、膨胀等等也不同，如果采用单一铸造铝合金材料，对于长叶片就会影响叶片的运转性能。
发明内容
本发明的目的就是针对上述风力发电机叶片存在的问题，提供一种能解决这些问题的新型风电机叶片。为此，本发明采用以下技术方案：
不同铸造铝合金制成的风电机叶片，采用铸造铝合金铸造制成，其特征是：所述的风电机叶片从叶根至叶尖依次分成至少两部分，每一部分的铸造铝合金成分不同，相邻两部分之间形成构成该两部分的铸造铝合金的熔合区。
作为对上述技术方案的补充和完善，本发明还包括以下附加技术方案：
所述的风电机叶片分成叶根、叶肚、叶尖三部分，叶根采用铝铜合金，使叶根具有较高的抗拉强度和柔性，能够承受较大的扭力和延伸力；叶肚采用铝硅合金，具有较高的弯曲强度，使其不容易弯折断裂；叶尖采用铝镁合金，具有较高的柔性，使其具有减震和吸震作用，避免产生共振，能够对飓风的瞬间袭击起缓冲作用；叶根与叶肚之间形成铝铜合金和铝硅合金熔合的第一熔合区，叶肚与叶尖之间形成铝硅合金和铝镁合金熔合的第二熔合区。
本发明叶片具有以下有益效果：通过将叶片依次分成多个部分，每一部分采用不同的铸造铝合金，使叶片各部分具有了不同的性能，能够更好的满足长叶片运转需要；能够减小叶肚的横截面积，则在同等重量下可以加长叶片长度，从而能减小风电机对最小风速的要求，增加年可发电时间，加大了投资产出率，还可以使叶片变浆性能提高，从而提高安全系数。
具体实施方式
下面结合附图对本发明进行详细描述。
如图1所示，本发明叶片分成叶根1、叶肚2、叶尖3三部分，叶根1采用铝铜合金，叶肚2采用铝硅合金，叶尖3采用铝镁合金，叶根1和叶肚2之间形成铝铜合金和铝硅合金的第一熔合区4，叶肚2和叶尖3之间形成铝硅合金和铝镁合金的第二熔合区5。

Claims (2)

1.不同铸造铝合金制成的风电机叶片，采用铸造铝合金铸造制成，其特征是：所述的风电机叶片从叶根至叶尖依次分成至少两部分，每一部分的铸造铝合金成分不同，相邻两部分之间形成构成该两部分的铸造铝合金的熔合区。
2.根据权利要求1所述的不同铸造铝合金制成的风电机叶片，其特征在于：所述的风电机叶片分成叶根(1)、叶肚(2)、叶尖(3)三部分，叶根(1)采用铝铜合金，叶肚(2)采用铝硅合金，叶尖(3)采用铝镁合金，叶根(1)与叶肚(2)之间形成铝铜合金和铝硅合金熔合的第一熔合区(4)，叶肚(2)与叶尖(3)之间形成铝硅合金和铝镁合金熔合的第二熔合区(5)。
CN2009101019606A 2009-08-21 2009-08-21 不同铸造铝合金制成的风电机叶片 Expired - Fee Related CN101994642B (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2902620A1 (en) * 2014-01-30 2015-08-05 Siemens Aktiengesellschaft Wind turbine blade with three parts each comprising a different material and method for manufacturing the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1442609A (zh) * 2002-02-22 2003-09-17 三菱重工业株式会社 机舱结构的风车
CN1916398A (zh) * 2006-08-31 2007-02-21 上海众德金属制品有限公司 风能发电机的叶片及其制造方法
CN2929237Y (zh) * 2006-06-15 2007-08-01 尚小刚 铝合金叶片型材
CA2623935A1 (en) * 2007-03-07 2008-09-07 Honeywell International Inc. Multi-alloy turbine rotors and methods of manufacturing the rotors
CN201539358U (zh) * 2009-08-21 2010-08-04 浙江恒通机械有限公司 风电机叶片

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1442609A (zh) * 2002-02-22 2003-09-17 三菱重工业株式会社 机舱结构的风车
CN2929237Y (zh) * 2006-06-15 2007-08-01 尚小刚 铝合金叶片型材
CN1916398A (zh) * 2006-08-31 2007-02-21 上海众德金属制品有限公司 风能发电机的叶片及其制造方法
CA2623935A1 (en) * 2007-03-07 2008-09-07 Honeywell International Inc. Multi-alloy turbine rotors and methods of manufacturing the rotors
CN201539358U (zh) * 2009-08-21 2010-08-04 浙江恒通机械有限公司 风电机叶片

Non-Patent Citations (1)

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Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2902620A1 (en) * 2014-01-30 2015-08-05 Siemens Aktiengesellschaft Wind turbine blade with three parts each comprising a different material and method for manufacturing the same

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