CN101220818A - 复合入口导向叶片 - Google Patents

复合入口导向叶片 Download PDF

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CN101220818A
CN101220818A CNA2008100026824A CN200810002682A CN101220818A CN 101220818 A CN101220818 A CN 101220818A CN A2008100026824 A CNA2008100026824 A CN A2008100026824A CN 200810002682 A CN200810002682 A CN 200810002682A CN 101220818 A CN101220818 A CN 101220818A
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epoxy resin
airfoil section
composite blading
inner core
fabric
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CN101220818B (zh
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R·凯罗
J·陈
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General Electric Co
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/02Selection of particular materials
    • F04D29/023Selection of particular materials especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/52Casings; Connections of working fluid for axial pumps
    • F04D29/54Fluid-guiding means, e.g. diffusers
    • F04D29/56Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/563Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00Other material characteristics; Treatment of material
    • F05C2253/04Composite, e.g. fibre-reinforced
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/90Coating; Surface treatment
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00Function
    • F05D2260/95Preventing corrosion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/10Metals, alloys or intermetallic compounds
    • F05D2300/12Light metals
    • F05D2300/121Aluminium
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/60Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603Composites; e.g. fibre-reinforced
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/60Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603Composites; e.g. fibre-reinforced
    • F05D2300/6034Orientation of fibres, weaving, ply angle

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种复合叶片(110)包括翼型部分(114),所述翼型部分具有主要由玻璃纤维环氧树脂构成的内芯(118);位于内芯的外部碳环氧树脂织物(120);玻璃纤维环氧树脂薄层和外金属壳(124)。

Description

复合入口导向叶片
技术领域
本发明涉及一种用于压缩机的入口导向叶片,尤其涉及一种多种材料的复合叶片结构。
背景技术
目前的入口导向叶片(或IGV)通常由GTD 450的沉淀硬化的不锈钢制成。这种叶片易于在使用中以磨损和腐蚀麻点的形式毁损,所述毁损是由叶片的心轴区域内的高循环疲劳和叶片的翼型部分上的腐蚀麻点造成的。
发明内容
在一个示例性但非限制性的实施例中,提供一种入口导向叶片(IGV),其主要根据材料的相容性进行设计,也即根据使用关键设置的多种材料的设计原理进行设计,以便利用它们对解决特定挑战最显著的贡献。例如,叶片的翼型部分的主要横截面,也即叶片的内芯,可主要由玻璃纤维环氧树脂构成,这是因为这种材料具有高的稳定性和疲劳强度以及成本低的优点。碳环氧树脂织物被主要设置在需要双向刚度要求的翼型部分的其它区域内,也即靠近气体通道表面区域内,以便使用于频率和移动控制的弯曲刚性最大,优选约占叶片翼型部分体积的20%。
所述翼型部分覆盖有外金属壳,优选铝壳,以阻止外部物体的损害(FOD)和腐蚀、侵蚀以及受潮。所述壳可为粘结到玻璃纤维环氧树脂上的不连续的实心包裹物的形式,或者为所应用的铝镀层的形式。
所述叶片的翼型部分还具有一体的、径向向内突出的凸片,翼型部分通过该凸片在其径向内端连接到叶片的心轴(和安装)部分。所述凸片本身也以复合的形式构成,其具有夹子外壳延伸部之间的环氧树脂玻璃纤维内芯的延伸部。
因此,在一个方面,本发明涉及一种复合叶片,其包括翼型部分,所述翼型部分具有主要由玻璃纤维环氧树脂构成的内芯和围绕所述内芯的外金属壳。
在另一方面,本发明涉及一种复合叶片,其包括翼型部分,所述翼型部分具有由玻璃纤维环氧树脂构成的内芯和围绕所述内芯的外金属壳,其中所述翼型部分还具有位于内芯向外的翼型部分的选择区域内的体积占20%的碳/环氧树脂织物,并且附加的玻璃纤维环氧树脂材料插入在碳/环氧树脂织物与铝壳之间。
现在将结合下面说明的附图对本发明进行详尽的描述。
附图说明
图1为常规的入口导向叶片的视图;
图2为这里所述类型的入口导向叶片的局部视图;
图3为图2所示入口导向叶片的平面图;
图4为与图2和3所示入口导向叶片一同使用的展开的半成品形式的外部金属壳的侧视图;
图5为图4所示但处于折叠状态的成品的侧视图;
图6为示出了根据叶片心轴部分示例性实施例的导向叶片的复合翼型部分组件的分解局部视图;
图7为用于图2-6所示导向叶片另一凸片结构的局部端部视图;以及
图8为示出了用于轴柄的复合翼型部分组件的分解局部视图。
具体实施方式
图1示出了入口导向叶片10,该入口导向叶片包括心轴部分12,翼型部分14和径向外中空轴16。这是一种典型的和公知的入口导向叶片结构,该结构可承受翼型部分14基底处的腐蚀麻点,如图标记15所示,以及由腐蚀麻点引起的高循环疲劳破裂,如标记17所示。
图2和图3示出了典型的而非限制性的本发明实施例的复合导向叶片。叶片10还包括翼型部分114和心轴以及空心轴16(未示出),这和图1中所示的类似。心轴和空心轴为金属材质的坚固、耐磨连接体。然而,在这一实施例中,至少所述翼型部分114由复合材料和被包裹的玻璃纤维环氧树脂内芯118构成,所述内芯118由碳环氧织物120包裹,所述织物又由金属壳(或者可替代地是,涂层)124包裹。优选的金属为铝,其自身又涂敷有磷酸盐/铬酸盐密封层以增强表面的光洁度和延伸很长距离的防腐层。
尤其是,内芯118由经济的、连续的加强玻璃纤维环氧树脂构成,其具有高的拉伸(和翼展方向)强度以及疲劳寿命。从图2和3显然可见,玻璃纤维环氧树脂材料占据了翼型部分的大部分内部空间。
应当注意,围绕内芯118的连续纤维加强碳环氧树脂织物120紧靠翼型部分114的气体通道表面126,128(图3)设置。为了其双向的硬度和强度性质需要对碳环氧树脂织物120进行选择,并且所述碳环氧树脂织物120的体积为翼型部分114体积的15-30%(如20%)。织物的纤维方向为径弦向方向±45°,以便平衡扭矩和弯曲要求,或者翼展方向/弦向的最大弯曲硬度。层数由设计的需要确定。
相对较薄层的玻璃纤维环氧树脂材料112包住或围绕连续的加强碳环氧树脂织物120,即夹在织物120和金属壳124之间。
外铝壳124的厚度为0.010英寸,其提供免受外部物体损坏、侵蚀、腐蚀的保护,并加强抗湿性。所述壳可利用环氧树脂粘合到玻璃纤维环氧树脂层122上,并与玻璃纤维和碳环氧树脂层一同固化。溶液硬化系列3000铝(如3004铝)适用于固体壳。后者还可被机械硬化到50Ksi的极限抗拉强度(UTS)。当pH在4.0-8.5之间时,这种材料在水介质中具有良好的抗腐蚀能力。所述可由扁平片进行折叠或在模具中加工成翼型形状。
可替换地是,冷喷涂沉积7000系列铝涂层可用在玻璃纤维环氧树脂层122上。冷喷涂铝为纳米晶体微结构形式,并具有增加的表面硬度、超抗腐蚀能力、好的疲劳和破裂韧度。所述涂层工艺可产生常规的(1-50μm的微粒)和增加了的表面硬度层以及因此产生的抗磨损能力。Al-Zn-Mg-Cu-Zr或Al-Si-Fe-Ni为可选择的涂层合金。
反过来,铝壳或涂层124可涂敷有磷酸盐/铬酸盐密封层以增强表面的光洁度和延伸很长距离的防腐层。
现在参看图4和5,在使用铝而不使用涂层用于壳时,一对径向延伸到凸片126可整体形成在翼型部分114的基底,以便当对齐时(如图5和6所示),凸片126将在玻璃纤维环氧树脂内芯118的类似延伸到凸片部分附近被夹住。如图6所示,凸片126的尺寸和形状适于固定在配合槽130内,所述配合槽形成在心轴128内并通过环氧树脂粘结在其上。凸片的矩形剖面有助于传输扭矩以便启动入口导向叶片。如图8所示,在所述叶片的相对端采用了一种类似的设置,其中翼型部分114连接空心轴16,并具有复合凸片131,所述凸片131固定到轴颈内的配合槽133内。
一种替换凸片装置在图7中示出,其中凸片134的低端134的被成形为能够提供与心轴的燕尾连接,所述凸片134具有分支或分叉的金属(也即铝)材质的楔形内芯138、玻璃纤维芯层118、外碳/环氧树脂织物层120。如前所述,整个组件覆盖有金属(也即铝)壳124、扩展部136,140。这一末端接合心轴128上的配合结合缝。
这里所述的叶片主要用在压缩机入口的导向叶片,其所能承受的工作温度高达约250。所述复合结构适用于其它叶片,包括实心旋转叶片,并且根据工作温度可适宜地改变材料。
尽管结合目前认为是最实际和优选的实施例对本发明进行了描述,但是应当理解,本发明并不局限于所公开的实施例,而是相反,本发明包含各种改进和等同布置,这些改进还等同布置都包含在所附权利要求书的主旨和范围之内。
部件列表
入口导向叶片10
心轴部分12
翼型部分14
外空心轴16
叶片10
翼型部分114
芯118
碳环氧树脂织物120
环氧树脂层122
金属壳(或涂层)124
凸片126
槽130
心轴128
槽133
凸片134
内芯138

Claims (10)

1.一种复合叶片(110),其包括翼型部分(114),所述翼型部分具有主要由玻璃纤维环氧树脂构成的内芯(118)和围绕所述内芯的外金属壳(124)。
2.如权利要求1所述的复合叶片,其特征在于:所述翼型部分还具有体积约为15-30%的碳/环氧树脂织物(120),所述织物位于所述内芯(118)与所述外金属壳(124)之间的所述翼型部分的选择区域内。
3.如权利要求2所述的复合叶片,其特征在于:所述外金属壳(124)包括铝壳。
4.如权利要求2所述的复合叶片,其特征在于:所述外金属壳(124)包括铝涂层。
5.如权利要求2所述的复合叶片,其特征在于:所述碳/环氧树脂织物(120)内的纤维方向为径弦向±45°。
6.如权利要求1所述的复合叶片,其特征在于:所述叶片包括压缩机入口导向叶片。
7.如权利要求2所述的复合叶片,其特征在于:所述碳/环氧树脂织物(120)更加靠近所述翼型部分(114)的外围外表面而非所述内芯(118)的中心。
8.如权利要求1所述的复合叶片,其特征在于:附加玻璃纤维环氧树脂材料(122)被插在所述碳/环氧树脂织物(120)与所述金属壳(124)之间。
9.如权利要求3所述的复合叶片,其特征在于:附加玻璃纤维环氧树脂材料(122)被插在所述碳/环氧树脂织物(120)与所述金属壳(124)之间。
10.如权利要求1所述的复合叶片,其特征在于:所述铝壳(124)的厚度约为0.010英寸。
CN2008100026824A 2007-01-12 2008-01-14 复合入口导向叶片 Expired - Fee Related CN101220818B (zh)

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US11/652,473 US7753653B2 (en) 2007-01-12 2007-01-12 Composite inlet guide vane
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EP1947346A1 (en) 2008-07-23
EP1947346B1 (en) 2014-04-30

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