CN105986841A - 用于燃气涡轮机的冷却系统 - Google Patents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
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- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/005—Sealing means between non relatively rotating elements
- F01D11/006—Sealing the gap between rotor blades or blades and rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/16—Form or construction for counteracting blade vibration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
- F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/26—Antivibration means not restricted to blade form or construction or to blade-to-blade connections or to the use of particular materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/80—Platforms for stationary or moving blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/80—Platforms for stationary or moving blades
- F05D2240/81—Cooled platforms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/221—Improvement of heat transfer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/94—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF]
- F05D2260/941—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF] particularly aimed at mechanical or thermal stress reduction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
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Abstract
本发明涉及一种用于燃气涡轮机的冷却系统。根据本发明的冷却系统包括环形阵列的涡轮机叶片,其包括形成在叶片平台部(11)中的底切(17)。基本上柱形的阻尼销(22)被布置在两个涡轮机叶片(10a和10b)之间。阻尼销(22)包括切口(23),其被构造并布置成使得从涡轮机叶片的叶片根部部分流到叶片轮廓部分的气流的至少一部分被引导到所述底切(17)。因为所述气流比叶片平台部以及尤其比底切具有更低的温度,所以通过该气流执行冷却底切。
Description
技术领域
本发明涉及一种根据权利要求1的用于燃气涡轮机的冷却系统。
背景技术
US 7,163,376B2中公开了一种用于燃气涡轮机的冷却系统。该冷却系统包括具有相对斜面的桶形平台部形式的相邻涡轮机叶片平台部和大体上柱形形状的销,该销具有围绕该销的周边部分在沿其间隔开的轴向位置处形成的多个通道,以传送冷却介质通过所述通道并冷却相邻的涡轮机叶片平台部的斜面中的至少一个。所述通道沿着所述销的相对侧延伸。
鉴于此,本发明的目标尤其是提出一种用于燃气涡轮机的冷却系统,其使得涡轮机叶片能够具有非常高的热和机械负载能力。该目标根据本发明通过具有权利要求1的特征的用于燃气涡轮机的冷却系统被实现。
根据本发明的用于燃气涡轮机的冷却系统包括环形阵列的涡轮机叶片。每个涡轮机叶片均具有叶片平台部,其具有叶片后缘侧,叶片凸面侧,叶片凹面侧和叶片前缘侧。涡轮机叶片进一步包括连接到叶片平台部的叶片轮廓部分和连接到叶片平台部且相对于叶片轮廓部分被布置在叶片平台部的另一侧上的叶片根部部分。额外地,涡轮机叶片还包括形成在叶片平台部中的底切。底切被执行为凹槽,其尤其从叶片平台部的叶片凹面侧延伸到叶片后缘侧。还可能的是底切被执行为凹槽,其从叶片平台部的叶片凹面侧延伸到叶片凸面侧。底切导致在叶片轮廓部分的根部后缘中降低的机械和热应力状态且在底切中更高的应力状态。这是可能的因为凹槽位于更冷的金属温度区域中,其具有更高的材料疲劳强度。
所述涡轮机叶片被布置成使得第一涡轮机叶片的叶片平台部的叶片凸面侧面朝第二涡轮机叶片的叶片平台部的叶片凹面侧。每个叶片凸面侧和每个叶片凹面侧均包含细长的尤其至少部分弓形的凹槽和沿相邻的此类凹槽对安置的尤其基本上柱形的阻尼销。阻尼销被用于阻尼振动,尤其是在燃气涡轮机的起动和关闭期间以及在燃气涡轮机以操作速度运转时。阻尼销包括切口,其被构造 并布置成使得大体上从叶片根部部分流到叶片轮廓部分的气流的至少一部分被引导到所述底切。因为所述气流比叶片平台部以及尤其比底切具有更低的温度,所以底切的冷却通过该气流执行。该气流是由于气体在叶片根部部分区域中的压力高于其在叶片轮廓部分中的压力而导致的。因此,根据本发明的冷却系统使得底切能够具有特别低的温度,这样,底切的所提及的技术效果是非常高的,这导致涡轮机叶片具有非常高的热和机械负载能力。因为包括切口的阻尼销的制造非常简单且便宜,所以冷却系统的简单且便宜实现是可能的。
在本发明的方面中,阻尼销包括仅仅一个切口。这导致非常强烈的气流通过该仅仅一个切口,并且因此导致非常有效地冷却底切,并且因此也导致非常低温度的底切。
在本发明的有利实施例中,切口在阻尼销的整个圆周上延伸。
在本发明的有利实施例中,切口在轴向方向上被螺旋地实施。这导致在阻尼销的轴向方向上的额外气流。该额外气流冷却阻尼销的环境并且间接地冷却底切。如此执行了底切的直接冷却和间接冷却。这导致尤其有效地冷却底切。
特别地,阻尼销的切口具有在轴向尺寸上5到12mm之间的宽度并且在径向方向上1到4mm之间的深度。
附图说明
本发明的进一步优势、特征和细节参照实施例的下述具体实施方式及参照附图得出,附图中相同的或具有相同功能的元件被规定具有相同的附图标记。
图中示出:
图1 从涡轮机叶片的凹面侧看的燃气涡轮机叶片的侧视图;
图2是 图1的涡轮机叶片的顶视图,
图3 在涡轮机叶片之间布置有阻尼销的两个相邻的涡轮机叶片的剖视图,
图4 阻尼销,
图5 阻尼销的第一替代实施例以及
图6 阻尼销的第二替代实施例。
具体实施方式
根据图1,燃气涡轮机叶片10包括具有叶片后缘侧12、叶片凸面侧13(在图1中不可见,参见图2)、叶片凹面侧14和叶片前缘侧15的叶片平台部11。 叶片轮廓部分16被连接到叶片平台部11。叶片根部部分19被连接到叶片平台部11且相对于叶片轮廓部分16被布置在叶片平台部11的另一侧上。叶片平台部11的各侧根据它们相对于叶片轮廓部分16的位置被标记。底切17被设置在叶片平台部11中,使得底切17从叶片凹面侧14延伸到叶片后缘侧12。底切17被执行为凹槽,其在叶片平台部11的表面18(也参见图2)之下的平面中延伸。
用于接收阻尼销(参见图3)的凹槽20在叶片平台部11的叶片凹面侧14上在平行于叶片平台部11的表面18的平面中延伸。底切17的平面被布置在叶片平台部11的表面18和凹槽20的平面之间。凹槽20具有部分弓形横截面(参见图3)。存在对应的凹槽21,其位于叶片平台部11的在图1中不可见而在图3中可见的叶片凸面侧13处。
根据图2,底切17(其边缘被表示为虚线)以直线从叶片凹面侧14延伸到叶片后缘侧12。
底切17包括具有圆形横截面的内部部分和具有矩形横截面的外部部分(未示出)。还可能的是凹槽的第二部分的横截面的内部部分具有椭圆形横截面。
根据图1和图2,一对涡轮机叶片10被布置成使得它们构造环形阵列。图3示出了两个相邻的涡轮机叶片10a、10b的布置。这两个涡轮机叶片10a、10b被布置成使得第一涡轮机叶片10a的叶片凹面侧14面朝第二涡轮机叶片10b的叶片凸面侧13。第一涡轮机叶片10a的叶片凹面侧14包括凹槽20并且第二涡轮机叶片10b的叶片凸面侧13包括对应的凹槽21,其都具有至少部分的弓形横截面。基本上柱形的阻尼销22被安置在该凹槽对20、21中。阻尼销22包括切口23,其被构造并布置成使得大体上从叶片根部部分19流到叶片轮廓部分16的气流24的至少一部分被引导到涡轮机叶片10a的底切17。
在图4中,阻尼销22被更详细地示出。阻尼销具有基本上柱形的形式且在两端部处均具有凹部表面24。切口23具有,即,在轴向方向上圆弓形形式的横截面。尤其切口23具有在轴向尺寸上5到12mm之间的宽度且在径向方向上1到4mm之间的最大深度。
在图5中,示出了一种替代的阻尼销122。阻尼销122的实质形式类似于阻尼销22的实质形式。仅在切口123的设计上有差异。切口123在阻尼销122的整个圆周上延伸。其通过凹部形成,该凹部具有在径向方向上5到12mm之间 的固定深度且在轴向方向上1到4mm之间的固定宽度。
在图6中,示出了第二替代的阻尼销222。阻尼销222的实质形式类似于阻尼销122的实质形式。仅在切口223的设计上有差异。切口223也在阻尼销222的整个圆周上延伸但是阻尼销222的切口223在轴向方向上被额外螺旋地实施。
Claims (7)
1.一种用于燃气涡轮机的冷却系统,其包括:
-环形阵列的涡轮机叶片(10、10a、10b),每个所述涡轮机叶片均具有
-叶片平台部(11),其具有
叶片后缘侧(12),
叶片凸面侧(13),
叶片凹面侧(14)以及
叶片前缘侧(15);
-叶片轮廓部分(16),所述叶片轮廓部分被连接到所述叶片平台部(11);
-叶片根部部分(19),所述叶片根部部分被连接到所述叶片平台部(11)且相对于所述叶片轮廓部分(16)被布置在所述叶片平台部(11)的另一侧上,
-底切(17),所述底切被形成在叶片平台部(11)中,
-所述涡轮机叶片(10、10a、10b)被布置成使得第一涡轮机叶片(10a)的所述叶片平台部(11)的所述叶片凸面侧(13)面朝第二涡轮机叶片(10b)的所述叶片平台部(11)的所述叶片凹面侧(14),
-每个叶片凸面侧(13)和每个叶片凹面侧(14)均包含细长的凹槽(20、21)以及
-阻尼销(22、122、222),所述阻尼销沿相邻的此类凹槽(20、21)对被安置,其中,所述阻尼销(22、122、222)包括切口(23、123、223),所述切口被构造并布置成使得大体上从所述叶片根部部分(19)流到所述叶片轮廓部分(16)的气流的至少一部分被引导到所述底切(17)。
2.根据权利要求1所述的冷却系统,
其特征在于
所述底切(17)从所述叶片平台部(11)的所述叶片凹面侧(14)延伸到所述叶片后缘侧(12)。
3.根据权利要求1或2所述的冷却系统,
其特征在于
所述阻尼销(22、122、222)包括仅仅一个切口(23、123、223)。
4.根据权利要求1、2或3所述的冷却系统,
其特征在于
所述切口(123、223)在所述阻尼销(122、222)的整个圆周上延伸。
5.根据权利要求1-4中任一项所述的冷却系统,
其特征在于
所述切口(222)在轴向方向上被螺旋地实施。
6.根据权利要求1-5中任一项所述的冷却系统,
其特征在于
所述切口(23、123、223)具有在轴向尺寸上5到12mm之间的宽度。
7.根据权利要求1-6中任一项所述的冷却系统,
其特征在于
所述切口(23、123、223)具有在径向方向上1到4mm之间的深度。
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US10584597B2 (en) | 2015-09-03 | 2020-03-10 | General Electric Company | Variable cross-section damper pin for a turbine blade |
US10472975B2 (en) | 2015-09-03 | 2019-11-12 | General Electric Company | Damper pin having elongated bodies for damping adjacent turbine blades |
US10443408B2 (en) | 2015-09-03 | 2019-10-15 | General Electric Company | Damper pin for a turbine blade |
US10385701B2 (en) * | 2015-09-03 | 2019-08-20 | General Electric Company | Damper pin for a turbine blade |
US9845690B1 (en) * | 2016-06-03 | 2017-12-19 | General Electric Company | System and method for sealing flow path components with front-loaded seal |
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CN1611747A (zh) * | 2003-10-31 | 2005-05-04 | 通用电气公司 | 冷却燃气涡轮转子叶片的方法和装置 |
CN1782329A (zh) * | 2004-11-24 | 2006-06-07 | 通用电气公司 | 受控的泄漏销和振动阻尼器 |
EP2500524A1 (en) * | 2011-03-15 | 2012-09-19 | United Technologies Corporation | Gas turbine engine blade and corresponding assemblage |
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KR100703278B1 (ko) * | 2003-07-07 | 2007-04-03 | 삼성전자주식회사 | 이동통신 시스템에서 기지국의 stc 검증을 위한 장치 및 방법 |
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- 2016-03-18 CN CN201610240560.3A patent/CN105986841A/zh active Pending
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CN1611747A (zh) * | 2003-10-31 | 2005-05-04 | 通用电气公司 | 冷却燃气涡轮转子叶片的方法和装置 |
CN1782329A (zh) * | 2004-11-24 | 2006-06-07 | 通用电气公司 | 受控的泄漏销和振动阻尼器 |
EP2500524A1 (en) * | 2011-03-15 | 2012-09-19 | United Technologies Corporation | Gas turbine engine blade and corresponding assemblage |
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