CN101050713B - 闭环蒸汽冷却的涡轮机罩 - Google Patents
闭环蒸汽冷却的涡轮机罩 Download PDFInfo
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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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/16—Cooling of plants characterised by cooling medium
- F02C7/18—Cooling of plants characterised by cooling medium the medium being gaseous, e.g. air
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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
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
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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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
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- 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
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- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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- Combustion & Propulsion (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
用于燃气涡轮机的闭环内罩组件(100)。罩组件(100)包括罩主体(110)、覆盖板(200)、通过覆盖板(200)到罩主体(110)的入口(130)、通过罩主体(110)的蜿蜒通道(180)、和从罩主体(110)到覆盖板(200)的出口(140)。
Description
技术领域
本发明一般地涉及对涡轮机罩的冷却,且更特定地涉及闭环蒸汽冷却的燃气涡轮机内罩。
背景技术
在燃气涡轮机中的热燃气经常可能处于高于金属部件的熔点的温度。为将热燃气包含在旋转的涡轮机叶片的尖端上方,一般地需要分段冷却的静止罩。因此需要建立冷却方案以在运行期间保护这些部件。
涡轮机罩经常通过传导、冲击冷却、膜冷却或它们的组合来冷却。一个冷却方案在共同拥有的美国专利No.6,390,769中示出。如所示出,此罩使用一系列四个冲击冷却的室。每个室具有焊接到内罩铸件的冲击隔板。此装置提供了对于蒸汽冷却剂的受控的路径和分配,使其喷射到燃气路径壁的背侧、被收集且然后在室的每个内重复。虽然此方法对于冷却有效,但罩具有许多零件和伴随的制造过程步骤。在此通过参考合并美国专利No.6,390,769。
因此,存在对于以简化的制造方法和技术提供了有效的冷却的改进的内罩的希望。罩不应降低涡轮机作为整体的总效率。
发明内容
本申请因此描述了用于燃气涡轮机的闭环内罩组件。罩组件可以包括罩主体、覆盖板、通过覆盖板到罩主体的入口、通过罩主体的蜿蜒通道和从罩主体到覆盖板的出口。
罩组件进一步可以包括施加到罩主体的内涂层。内涂层可以包括多个陶瓷和金属层。内涂层可以包括用于保护罩主体不直接暴露于热燃气的热屏障涂层,且可以包括等离子体喷射施加。
罩主体可以包括单晶超耐热合金金属或等轴镍基超耐热合金金属。罩主体通过内芯铸造制成。罩主体可以包括蒸汽入口腔和出口腔。覆盖板可以包括钴基合金。
蜿蜒通道可以包括多个大约九十度的转弯。蜿蜒通道可以包括预先确定的尺寸用于其内的平滑的且良好地分布的蒸汽流,且蜿蜒通道也可以包括多个平行的路径。蜿蜒通道可以在其内包括多个湍流器。
本申请进一步描述了用于燃气涡轮机的闭环内罩组件。罩组件可以包括罩主体、覆盖板、通过覆盖板到罩主体的入口、和通过罩主体的蜿蜒通道。蜿蜒通道可以包括多个大约九十度的转弯。
蜿蜒通道可以包括预先确定的尺寸用于其内的平滑的且良好地分布的蒸汽流,且蜿蜒通道也可以包括多个平行的路径。蜿蜒通道可以在其内包括多个湍流器。
对本领域一般技术人员,本申请的这些和其他特征将通过结合附图和附带的权利要求书阅读如下的详细描述变得显见。
附图说明
图1示出了如在此所描述的罩组件的透视图;
图2是如使用在图1的罩组件内的内罩铸件的透视图;
图3是使用于造成图2的内罩铸件的通道的内芯的透视图;
图4是图3中所示的内芯的下侧的透视图;
图5是图1的罩组件的剖视透视图,图中示出了由图3和图4的陶瓷芯造成的通道。
具体实施方式
现在参考附图,其中在所有数个视图中同样的数字指示同样的元件,图1图示了如在此描述的罩组件100。罩组件100可以绕常规的一级叶片或类似类型的前方涡轮机级定位。罩组件100可以与涡轮机壳界面和钩喷嘴界面或外罩壳体(未示出)相关。虽然蒸汽将被描述为在此使用的冷却介质,但罩组件100可以使用任何冷却介质的类型。
罩组件100可以包括内罩主体110、内涂层120和覆盖板200。罩主体110可以由单晶超耐热合金金属、等轴镍基超耐热合金金属或类似类型的具有良好的高温冶金特性的材料制成。罩主体110可以通过使用陶瓷内芯170的铸造方法制成,以造成内流道180。内涂层120可以由陶瓷和金属层二者制成,或由可以抵抗长期非常高温环境且提供了罩主体110和热燃气之间的热屏障的类似类型的材料制成。覆盖板200可以由具有很好的磨损特性的超耐热合金金属制成,例如钴基合金,且可以通过铸造方法制成或完全地加工成形。罩主体110和覆盖板200可以通过电子束焊接、钎焊或类似的技术结合。内涂层120可以作为高温等离子体喷射施加。内涂层120的使用是选择的。
覆盖板200可以包括蒸汽入口端口130和蒸汽出口端口140。类似地,罩主体110可以包括与覆盖板200的蒸汽入口端口130连通的蒸汽入口腔150和与覆盖板200的蒸汽出口端口140连通的蒸汽出口腔160。罩主体110的蒸汽入口150和蒸汽出口160又通向使用陶瓷内芯170整体地铸造在罩主体110内的内流道180。如上所描述,流道180在移除作为熔模铸造加工的零件的陶瓷内芯170后形成在其内。
如所示出,流道180在很大程度上是蜿蜒形状的且可以包括用于冷却剂同时流动的多个平行的路径。流道180具有多个位于罩主体110的前端和后端处的大约九十度(90°)的转弯,以允许冷却剂几乎完全地流到前部边缘和后部边缘。这些转弯合并了多个转向轮叶185,它们便于平滑的且良好地分布的蒸汽流从其通过。流道180也可以定尺寸为对于流动通过它们的蒸汽产生高的对流系数,且同时产生紧凑的通道高度。此外,这些紧凑的流道180便于在钩的下方向前和向后的流道的容易的安排而无干涉。
流道180可以具有多个定位在其内的湍流器190。可以使用任何个数的湍流器190。湍流器190提高了蒸汽冷却剂的热传递特征。湍流器190的使用是选择的。
在使用中,覆盖板200的蒸汽入口130和蒸汽出口140定位在罩组件100的中心以避免与前部钩和后部钩的干涉。流道180的蜿蜒的属性允许冷却剂同时地向前和向后流过罩组件100的中心区域,同时也允许蒸汽被供给到此相同的中心区域内和从此相同的中心区域供给出。蒸汽因此流动通过覆盖板200的蒸汽入口端口130、罩主体110的蒸汽入口腔150、通过流道180,且再次通过蒸汽出口腔160和蒸汽出口端口140流出,以提供对流冷却且无蒸汽损失。测试指出,在使用期间罩组件100不产生显著的压力损失同时仍提供有效的对流冷却。
罩组件100可以与燃气涡轮机的前部级一起使用且与装置(例如蒸汽涡轮机)组合以从在对罩冷却期间施加到蒸汽的热能中获取功。随后,此蒸汽可以以闭环方式被送回到罩以再次作为冷却剂使用。例如,罩组件100可以与由General Electric Corporation ofSchenectady,New York销售的组合的9H循环蒸汽冷却涡轮机一起使用,或使用在类似类型的设备中。
应显见的是,前述内容仅涉及本申请的优选的实施例,且本领域普通技术人员可对此进行多个改变和修改而不偏离在如下的权利要求书及其等价物中限定的本发明的一般精神和范围。
零件列表
100罩组件
110罩主体
120内涂层
130蒸汽入口
140蒸汽出口
150蒸汽入口腔
160蒸汽出口腔
170内芯
180流道
185转向轮叶
190湍流器
200覆盖板
Claims (9)
1.一种用于燃气涡轮机的闭环内罩组件(100),其包括:
罩主体(110);
覆盖板(200);
通过罩主体(110)限定的蜿蜒通道(180);
通过覆盖板(200)到罩主体(110)的入口(130);和
从罩主体(110)到覆盖板(200)的出口(140)。
2.根据权利要求1所述的罩组件(100),进一步包括施加到罩主体(110)的内涂层(120)。
3.根据权利要求1所述的罩组件(100),其中罩主体(110)包括单晶超耐热合金金属或等轴镍基超耐热合金金属。
4.根据权利要求3所述的罩组件(100),其中罩主体(110)通过内芯铸造制成。
5.根据权利要求1所述的罩组件(100),其中覆盖板(200)包括钴基合金。
6.根据权利要求1所述的罩组件(100),其中罩主体(110)包括蒸汽入口腔(150)和蒸汽出口腔(160)。
7.根据权利要求1所述的罩组件(100),其中蜿蜒通道(180)包括多个大约九十度的转弯。
8.根据权利要求1所述的罩组件(100),其中蜿蜒通道(180)包括多个平行的路径。
9.根据权利要求1所述的罩组件(100),其中蜿蜒通道(180)在其内包括多个湍流器(190)。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/278,972 US7448850B2 (en) | 2006-04-07 | 2006-04-07 | Closed loop, steam cooled turbine shroud |
US11/278972 | 2006-04-07 | ||
US11/278,972 | 2006-04-07 |
Publications (2)
Publication Number | Publication Date |
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CN101050713A CN101050713A (zh) | 2007-10-10 |
CN101050713B true CN101050713B (zh) | 2012-12-12 |
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CN2007100920831A Expired - Fee Related CN101050713B (zh) | 2006-04-07 | 2007-04-06 | 闭环蒸汽冷却的涡轮机罩 |
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US (1) | US7448850B2 (zh) |
JP (1) | JP4477032B2 (zh) |
KR (1) | KR101289592B1 (zh) |
CN (1) | CN101050713B (zh) |
DE (1) | DE102007017973B4 (zh) |
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EP2159381A1 (de) * | 2008-08-27 | 2010-03-03 | Siemens Aktiengesellschaft | Turbinenleitschaufelträger für eine Gasturbine |
US8002515B2 (en) | 2008-09-08 | 2011-08-23 | General Electric Company | Flow inhibitor of turbomachine shroud |
US8621865B2 (en) | 2010-05-04 | 2014-01-07 | Ford Global Technologies, Llc | Internal combustion engine with liquid-cooled turbine |
DE102010037378A1 (de) | 2010-09-07 | 2012-03-08 | Ford Global Technologies, Llc | Zylinderkopf mit Turbine |
DE102011002554A1 (de) | 2011-01-12 | 2012-07-12 | Ford Global Technologies, Llc | Brennkraftmaschine mit Zylinderkopf und Turbine |
DE102011002759A1 (de) | 2011-01-17 | 2012-07-19 | Ford Global Technologies, Llc | Brennkraftmaschine mit Abgasturboaufladung |
EP2554820B1 (de) | 2011-08-03 | 2016-12-14 | Ford Global Technologies, LLC | Aufgeladene Brennkraftmaschine mit zwei Turbinen und Verfahren zum Betreiben einer derartigen Brennkraftmaschine |
US9328623B2 (en) * | 2011-10-05 | 2016-05-03 | General Electric Company | Turbine system |
DE102014201732B4 (de) | 2013-02-28 | 2024-03-28 | Ford Global Technologies, Llc | Brennkraftmaschine mit flüssigkeitsgekühlter Turbine |
DE102013203376A1 (de) | 2013-02-28 | 2014-08-28 | Ford Global Technologies, Llc | Brennkraftmaschine mit flüssigkeitsgekühlter Turbine |
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DE102013206245A1 (de) | 2013-04-09 | 2014-10-09 | Ford Global Technologies, Llc | Flüssigkeitsgekühlte Turbine |
DE202013101510U1 (de) | 2013-04-09 | 2013-04-19 | Ford Global Technologies, Llc. | Flüssigkeitsgekühlte Turbine |
GB201308605D0 (en) | 2013-05-14 | 2013-06-19 | Rolls Royce Plc | A shroud arrangement for a gas turbine engine |
DE202013103704U1 (de) | 2013-08-14 | 2013-08-27 | Ford Global Technologies, Llc | Zylinderkopf mit einer Axialturbine |
DE102013216112A1 (de) | 2013-08-14 | 2015-02-19 | Ford Global Technologies, Llc | Zylinderkopf mit einer Axialturbine |
DE102014201412A1 (de) | 2014-01-27 | 2015-07-30 | Ford Global Technologies, Llc | Zylinderkopf mit gekühlter Turbine |
DE202014100385U1 (de) | 2014-01-27 | 2014-02-06 | Ford Global Technologies, Llc | Zylinderkopf mit gekühlter Turbine |
DE102014201411A1 (de) | 2014-01-27 | 2015-08-13 | Ford Global Technologies, Llc | Brennkraftmaschine mit gekühlter Turbine |
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Also Published As
Publication number | Publication date |
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DE102007017973A1 (de) | 2008-01-24 |
KR20070100647A (ko) | 2007-10-11 |
KR101289592B1 (ko) | 2013-07-24 |
JP2007278290A (ja) | 2007-10-25 |
JP4477032B2 (ja) | 2010-06-09 |
DE102007017973B4 (de) | 2022-04-07 |
US7448850B2 (en) | 2008-11-11 |
CN101050713A (zh) | 2007-10-10 |
US20070237647A1 (en) | 2007-10-11 |
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