CN102200055B - 燃气轮机鼻锥体 - Google Patents
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Abstract
本发明涉及一种燃气轮机鼻锥体。一种燃气轮机鼻锥体组件(40)包括锥形旋转体(42)。锥形旋转体(42)具有在第一端(46)处的顶部(44)和在第二端(50)处的圆形基部(48)。锥形旋转体(42)包括含有碳纤维的复合材料层(70),布置在含有碳纤维的复合材料层(70)的内表面(72)上的电绝缘层(74),布置在电绝缘层(74)的内表面的导电层(78),和延伸通过锥形旋转体(42)的第一端并连接到导电层(78)的导电部件(80)。这个结构为燃料轮机鼻锥体组件(40)提供防雷击保护。
Description
技术领域
本发明涉及一种燃气轮机鼻锥体,尤其涉及一种涡轮风扇燃气轮机鼻锥体。
背景技术
众所周知,燃气轮机鼻锥体包括含有玻璃纤维的复合材料。含有玻璃纤维的复合材料的优点在于具有相对较高的断裂应变率。但是,含有玻璃纤维的复合材料具有相对较低的疲劳强度且对于复合材料而言相对致密。
已经有人提议,使燃气轮机鼻锥体包括含有碳纤维和玻璃纤维的复合材料。含有碳纤维和玻璃纤维的复合材料具有改进的强度、改进的疲劳强度和良好的耐冲击性能。
由含有碳纤维和玻璃纤维的复合材料构成的燃气轮机鼻锥体存在的一个问题是它易受雷击,因为碳纤维是导电的,存在燃气轮机鼻锥体被闪电击中的危险。如果由含有碳纤维和玻璃纤维的复合材料构成的燃气轮机鼻锥体被闪电击中,由于电流没有低电阻路径可以跟随,因此燃气轮机可能由于雷击而损坏。
发明内容
因此,本发明试图提供一种新式的燃气轮机鼻锥体,其减少了,优选地克服了,上述问题。
因此,本发明提供一种燃气轮机鼻锥体,其包括锥形旋转体,该锥形旋转体具有在第一端处的尖端和在第二端处的圆形基部,该锥形旋转体包括:含有碳纤维的复合材料层;电绝缘层,其布置在含有碳纤维的复合材料层的内表面上;导电层,其布置在电绝缘层的内表面上;以及导电部件,其延伸穿过锥形旋转体的第一端并连接到导电层。
导电层可包括金属层。导电层可包括金属网。导电层可包括铜或铝。
导电层可包括金属部件。该金属部件可包括铜或铝。
电绝缘层可包括含有玻璃纤维的复合材料层。该含有玻璃纤维的复合材料层可包括与环氧树脂复合的玻璃纤维,或者与聚酯树脂、乙烯基酯树脂、双马来酰亚胺树脂或其他热固树脂复合的玻璃纤维。
含有碳纤维的复合材料层可包括与环氧树脂复合的碳纤维,与环氧树脂复合的玻璃纤维和碳纤维,与聚醚醚酮基复合的碳纤维或与聚醚醚酮基复合的碳纤维和玻璃纤维。
电绝缘层可包括含有玻璃纤维的复合材料层,导电层包括金属网,而导电部件包括金属部件。
锥形旋转体的第一端可具有橡胶末端,而导电部件延伸穿过该橡胶末端。
导电部件可包括圆锥形部件,盘形部件和截面积减少的部件,该截面积减少的部件在圆锥形部件和盘形部件之间同轴地延伸,所述橡胶末端定位成径向上围绕截面积减小部件且轴向上位于盘形部件和圆锥形部件之间。
含有碳纤维的复合材料层、电绝缘层和导电层可以共同模制在一起以形成燃气轮机鼻锥体。
可替代地,电绝缘层可粘接到含有碳纤维的复合材料层,而导电层可粘接到电绝缘层,以形成燃气轮机鼻锥体。
附图说明
下面将参考附图,通过示例的方式更加全面地描述本发明,在附图中:
图1是具有根据本发明的燃气轮机鼻锥体的涡轮风扇燃气轮机。
图2是穿过图1所示的燃气轮机鼻锥体的放大的纵向剖视图。
图3是穿过图2所示的燃气轮机鼻锥体的上游端的一部分的进一步放大的剖视图。
图4是穿过图2所示的燃气轮机鼻锥体的中间部分的一部分的进一步放大的剖视图。
图5是穿过图2所示的燃气轮机鼻锥体的下游端的一部分的进一步放大的剖视图。
具体实施方式
如图1所示,涡轮风扇燃气轮机10按流动顺序包括吸入口12,风扇部分14,压缩机部分16,燃烧部分18,涡轮部分20和排出口22。压缩机部分16包括一个或多个压缩机,该一个或多个压缩机布置成由涡轮部分20中的一个或多个涡轮通过轴(未示出)驱动。风扇部分14由涡轮部分20中的涡轮通过轴(未示出)驱动。风扇部分14包括风扇转子24,该风扇转子承载有多个在圆周方向上间隔开的径向向外延伸的风扇叶片26。风扇转子24和风扇叶片被风扇壳体28包围,而风扇壳体28限定风道30的径向外表面。风扇壳体28从核心发动机壳体32由多个径向延伸的风扇出口导向叶片34支撑。风道30具有出口36。
燃气轮机10以非常常规的方式进行操作,即空气进入吸入口12并最初由风扇部分14压缩。一部分空气流过风道30和出口36以提供推力。其余的空气被压缩机部分16压缩并供应给燃烧部分18。燃料供应给燃烧部分18并在燃烧部分18中燃烧以产生热气。热气流动通过涡轮部分20并驱动涡轮部分20,然后流动通过排出口22以产生进一步的推力。涡轮部分20依次驱动风扇部分14和压缩机部分16。
在图2,图3,图4和图5中更清楚地示出了风扇部分14,尤其是风扇转子24和鼻锥体组件40。鼻锥体组件40包括圆锥形旋转体42,锥形旋转体,其可拆卸地固定至风扇转子24的上游端。锥形旋转体42具有在上游、第一端46处的尖部、顶点44和在下游、第二端50处的圆形基部48。锥形旋转体42的圆形基部48形成套管(spigot)52,且套管52具有径向面朝内的径向内圆柱面54以及在其下游端面朝下游方向的径向面56,如图5更清楚地所示。套管52的径向内圆柱面54可拆卸地定位并抵靠支撑环62上的轴向延伸凸缘60的径向外圆柱面58。套管52的径向内圆柱面54和支撑环62的凸缘60的径向外圆柱面58具有大致相同的直径。套管52的径向面56可拆卸地定位并抵靠支撑环62上的面朝上游方向的径向面64。支撑环62通过合适的紧固件(例如螺母和螺栓)固定于风扇转子24,而鼻锥体组件40通过合适的紧固件(例如螺母和螺栓)固定于支撑环62。支撑环62和风扇转子24是金属的。
鼻锥体组件40利用多个在圆周方向上间隔开的支架可固定到支撑环62上,其中鼻锥体组件40通过紧固件(例如螺母和螺栓)固定到所述支架上,而支架通过紧固件(例如螺母和螺栓)固定到支撑环62和风扇转子24上,如申请人的已公开的英国专利申请GB2363170A所述。可选地,鼻锥体组件40利用多个在圆周方向上间隔开的部件可固定到支撑环62上,该多个在圆周方向上间隔开的部件与支撑环62成一体且在轴向方向上是刚性的而在径向方向上是柔性的,鼻锥体组件40通过紧固件(例如螺母和螺栓)固定到所述部件上,而支撑环62通过紧固件(例如螺母和螺栓)固定到风扇转子24上,如申请人的以公开的欧洲专利申请EP2096029A2所述。
锥形旋转体45包括含有碳纤维的复合材料层70,电绝缘层74布置在含有碳纤维的复合材料层70的内表面72上,导电层78布置在电绝缘层74的内表面76上,而导电部件80延伸通过锥形旋转体42的第一端46并连接到导电层78,如图4所示。锥形旋转体42的第一端46处的顶点44具有橡胶末端82,导电部件80延伸穿过该橡胶末端82,如图3更清楚地所示。橡胶末端82固定到含有碳纤维的复合材料层70。导电部件80包括在其下游端86处的盘形部件84和在其上游端90处的锥形部件88,以及在盘形部件84和锥形部件88之间共轴延伸的截面积减小的部分92。橡胶末端82定位成在径向上围绕截面积减小的部分92且在轴向上位于盘形部件84和锥形部件88之间。橡胶末端82具有锥形表面94,该锥形表面94布置成与锥形部件88和锥形旋转体42的锥形表面96,98平齐。导电层78连接到盘形部件84。电绝缘层74和导电层78从锥形旋转体42的第一端44至第二端50延伸大致锥形旋转42的长度。
导电层78包括金属部件,优选地包括金属网。该金属网可包括铜网或铝网。导电部件80包括金属部件。该金属部件可包括铜或铝。
电绝缘层74包括含有玻璃纤维的复合材料。含有玻璃纤维的复合材料可包括与环氧树脂复合的玻璃纤维或与任何其他热固性基质,例如聚脂树脂,乙烯基酯树脂或双马来酰亚胺树脂,复合的玻璃纤维。
含有碳纤维的复合材料层70包括与环氧树脂复合的碳纤维,与环氧树脂复合的玻璃纤维和碳纤维,与聚醚醚酮(PEEK)基复合的碳纤维或与聚醚醚酮(PEEK)基或其他合适的热塑性基质复合的碳纤维和玻璃纤维。
导电层78,金属部件(例如金属网),或者被共同模制到燃气轮机鼻锥体组件40中或者粘接到燃气轮机鼻锥体组件40。电绝缘层74,含有玻璃纤维的复合材料层,或者被共同模制到燃气轮机鼻锥体组件40中或者粘接到燃气轮机鼻锥体组件40。因此,含有碳纤维的复合材料层70,电绝缘层74(例如含有玻璃纤维的复合材料层),和导电层78(例如金属部件或金属网),可共同模制在一起以形成燃气轮机鼻锥体组件40。电绝缘层74,例如含有玻璃纤维的复合材料层,可粘接到含有碳纤维的复合材料层70,而导电层78,例如金属部件或金属网,可粘接到电绝缘层74上。
在燃气轮机鼻锥体组件40的含有碳纤维的复合材料层70的外表面上可以有聚亚安酯层。
橡胶末端82可以弯曲以使冰从锥形旋转体42上脱落。
锥形旋转体42的第一端46处的顶点44是锥形旋转体42上的最可能会遭受雷击的点。导电部件80将雷击产生的电引导通过橡胶末端82并传送到锥形旋转体42的内表面上的导电层78。然后电从导电层78被引导进入支撑环62。应注意,导电层78由在锥形旋转体42的下游端50处的张紧紧固件夹紧抵靠支撑环62,以确保导电层78一经与支撑环62接触就提供在它们之间的电路径。导电层78通过电绝缘层74与含有碳纤维的复合材料层70电绝缘以提供电绝缘并避免导电层78的电蚀,尤其是如果导电层包括铝的话。锥形旋转体42的含有碳纤维的复合材料层中的碳减少或防止锥形旋转体42中的静电聚集,因为其虽然提供了较小的导电路径,但是具有非常高的电阻以致于在雷击期间不能导电。锥形旋转体42内表面上的金属网能相对于锥形旋转体42移动,能汽化且能够允许冲击波通过而不损坏锥形旋转体42,或者燃气轮机鼻锥体组件40。支撑环62设置有孔(未示出),以允许气体从锥形旋转体42的内部逸出,从而防止气压在锥形旋转体42内聚集。可以修复、或更换燃气轮机鼻锥体组件40的锥形旋转体42上的导电层78,而不必更换整个燃气轮机鼻锥体组件40。同样,可以修复燃气轮机鼻锥体组件40的锥形旋转体42而不必去除导电层78。
虽然已经参照延伸通过锥形旋转体上游端的橡胶末端对本发明进行了描述,但是同样可以仅提供直接延伸通过锥形旋转体上游端的导电部件。
Claims (16)
1.一种燃气轮机鼻锥体,其包括锥形旋转体,所述锥形旋转体具有在第一端处的尖部和在第二端处的圆形基部,所述锥形旋转体包括含有碳纤维的复合材料层,布置在所述含有碳纤维的复合材料层的内表面上的电绝缘层,布置在所述电绝缘层的内表面上的导电层,和延伸穿过所述锥形旋转体的所述第一端并连接到所述导电层的导电部件。
2.如权利要求1所述的燃气轮机鼻锥体,其中所述导电层包括金属层。
3.如权利要求1所述的燃气轮机鼻锥体,其中所述导电层包括金属网。
4.如权利要求1所述的燃气轮机鼻锥体,其中所述导电层包括铜或铝。
5.如权利要求1所述的燃气轮机鼻锥体,其中所述导电部件包括金属部件。
6.如权利要求5所述的燃气轮机鼻锥体,其中所述金属部件包括铜或铝。
7.如权利要求1所述的燃气轮机鼻锥体,其中所述电绝缘层包括含有玻璃纤维的复合材料层。
8.如权利要求7所述的燃气轮机鼻锥体,其中所述含有玻璃纤维的复合材料层包括与环氧树脂复合的玻璃纤维或与聚酯树脂、乙烯基酯树脂、双马来酰亚胺树脂或其他热固树脂复合的玻璃纤维。
9.如权利要求1所述的燃气轮机鼻锥体,其中所述含有碳纤维的复合材料层包括与环氧树脂复合的碳纤维,与环氧树脂复合的玻璃纤维和碳纤维,与聚醚醚酮基复合的碳纤维,或与聚醚醚酮基复合的碳纤维和玻璃纤维。
10.如权利要求1所述的燃气轮机鼻锥体,其中所述电绝缘层包括含有玻璃纤维的复合材料层,所述导电层包括金属网,所述导电部件包括金属部件。
11.如权利要求1-10中任一项所述的燃气轮机鼻锥体,其中所述锥形旋转体的所述第一端具有橡胶末端,而所述导电部件延伸穿过所述橡胶末端。
12.如权利要求11所述的燃气轮机鼻锥体,其中所述导电部件包括圆锥形部件,盘形部件和截面积减少的部件,所述截面积减少的部件在所述圆锥形部件和所述盘形部件之间同轴地延伸,所述橡胶末端定位成径向上在所述截面积减小部件的周围且轴向上位于所述盘形部件和所述圆锥形部件之间。
13.如权利要求1-10中任一项所述的燃气轮机鼻锥体,其中所述含有碳纤维的复合材料层、所述电绝缘层和所述导电层共同模制在一起以形成所述燃气轮机鼻锥体。
14.如权利要求1-10中任一项所述的燃气轮机鼻锥体,其中所述电绝缘层粘接到所述含有碳纤维的复合材料层,而所述导电层粘接到所述电绝缘层,以形成所述燃气轮机鼻锥体。
15.如权利要求12所述的燃气轮机鼻锥体,其中圆锥形部件具有圆锥形表面,锥形旋转体具有锥形外表面,橡胶末端具有锥形表面,橡胶末端的锥形表面与圆锥形部件的圆锥形表面以及锥形旋转体的锥形外表面平齐。
16.一种燃气轮机,其包括如权利要求1所述的燃气轮机鼻锥体。
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GBGB1005053.2A GB201005053D0 (en) | 2010-03-26 | 2010-03-26 | A gas turbine engine nose cone |
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CN102200055B true CN102200055B (zh) | 2015-04-22 |
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EP (1) | EP2369155B1 (zh) |
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CN102200055A (zh) | 2011-09-28 |
GB201005053D0 (en) | 2010-05-12 |
EP2369155B1 (en) | 2019-05-08 |
EP2369155A2 (en) | 2011-09-28 |
EP2369155A3 (en) | 2018-04-04 |
US20110236217A1 (en) | 2011-09-29 |
US8753094B2 (en) | 2014-06-17 |
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