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    • 2. 发明授权
    • Pattern for the surface of a turbine shroud
    • 涡轮机护罩表面的图案
    • US07614847B2
    • 2009-11-10
    • US10996878
    • 2004-11-24
    • Warren Arthur NelsonBrian Peter ArnessPaul Thomas MarksRaymond Edward ChuppTara Easter Mcgovern
    • Warren Arthur NelsonBrian Peter ArnessPaul Thomas MarksRaymond Edward ChuppTara Easter Mcgovern
    • F01D11/12
    • F01D11/12F01D11/122
    • A pattern for improving aerodynamic performance of a turbine includes a material disposed in a pattern at a base surface of a turbine shroud such that the material is capable of abradable contact with a tip portion of a turbine bucket. The pattern includes a first plurality of ridges disposed at the base surface such that a first portion of the first plurality of ridges corresponding to a back portion of the turbine bucket is oriented at a first angle with respect to an axis of rotation of the turbine bucket. Each ridge of the first plurality of ridges has a first sidewall and a second sidewall having a first end and a second end. The first ends of the first and second sidewalls extend from the base surface. The first and second sidewalls slope toward each other with substantially equal but opposite slopes until meeting at the second ends of respective first and second sidewalls defining a centerline and a top portion of the ridge.
    • 用于改善涡轮机的空气动力学性能的模式包括在涡轮机护罩的基面处以图案设置的材料,使得该材料能够与涡轮机桶的尖端部分磨损接触。 该图案包括设置在基部表面处的第一多个脊,使得对应于涡轮机桶的后部的第一多个脊的第一部分相对于涡轮叶片的旋转轴线以第一角度定向 。 第一多个脊中的每个脊具有第一侧壁和具有第一端和第二端的第二侧壁。 第一和第二侧壁的第一端从基面延伸。 第一和第二侧壁彼此相对倾斜,具有基本上相等但相反的斜面,直到在相应的第一和第二侧壁的第二端处共同限定脊的中心线和顶部。
    • 4. 发明授权
    • Method and apparatus for eliminating thermal bowing of steam turbine rotors
    • 用于消除汽轮机转子热弯的方法和装置
    • US06168377A
    • 2001-01-02
    • US09238257
    • 1999-01-27
    • Christopher Edward WolfeFrederick George BailyLawrence Edward RentzAlexander MorsonNorman Arnold TurnquistPaul Thomas MarksRoger Jordan Carr
    • Christopher Edward WolfeFrederick George BailyLawrence Edward RentzAlexander MorsonNorman Arnold TurnquistPaul Thomas MarksRoger Jordan Carr
    • F01D1100
    • F01D11/001F16J15/3288
    • Brush seals are employed on steam turbine rotors without the risk of causing thermal rotor bowing and without compromising the sealing performance. In one form, a groove in the rotor has an insert in frictional contact with the brush seal. The non-uniform distribution of heat due to frictional contact between the brush seal and proud portions of the rotor is dissipated within the insert such that adjoining rotor portions are substantially uniformly heated without causing thermal bow. In a further form, a groove or grooves are provided in the rotor surface adjacent to the brush seal and maintain non-uniform heat distribution locally in the rotor without causing thermal bow of the rotor. In another form, a land projects radially outwardly of the rotor surface in contact with the brush seal. The non-uniform distribution of heat due to frictional contact between proud portions of the land and the brush seal dissipates into a uniform distribution of heat in the rotor proper to avoid thermal bowing. In a final form, the brush seal has frictional contact with bucket dovetail or wheel protrusions spaced radially outwardly of the rotor such that non-uniform distribution dissipates into a uniform distribution within the rotor.
    • 汽轮机转子上使用刷子密封件,而不会导致热转子弯曲并且不影响密封性能。 在一种形式中,转子中的槽具有与刷密封件摩擦接触的插入件。 由于刷子密封件和转子的骄人部分之间的摩擦接触引起的热量的不均匀分布在插入件内消散,使得相邻的转子部分基本均匀地加热而不引起热弓。 在另一种形式中,在转子表面中设置有与刷子密封件相邻的凹槽或槽,并且在转子中局部地保持不均匀的热分布,而不会导致转子的热弓。 在另一种形式中,一个脊面与转子表面径向向外突出地与刷子密封接触。 由于陆地骄傲部分和刷子密封件之间的摩擦接触导致的热量的不均匀分布在转子中散发成均匀的热分布,以避免热弯曲。 在最终形式中,刷子密封件与铲斗的燕尾榫摩擦接触或轮毂径向向外偏离转子,使得不均匀的分布在转子内消散成均匀的分布。
    • 10. 发明授权
    • Apparatus and methods for flowing a cooling or purge medium in a turbine downstream of a turbine seal
    • 在涡轮密封件下游的涡轮中流动冷却或吹扫介质的装置和方法
    • US06412270B1
    • 2002-07-02
    • US09682510
    • 2001-09-12
    • Jason Paul MortzheimMing ZhouPaul Thomas Marks
    • Jason Paul MortzheimMing ZhouPaul Thomas Marks
    • F02C500
    • F01D25/12F01D11/04F01D25/125F05D2260/601
    • Leakage flows through seals are used to cool components of a turbine downstream of the seals. At certain seal locations, the leakage flows are restricted to the extent that cooling of downstream components cannot be effected by the leakage flows. The cooling air leakage flow is augmented by extracting bleed air from different stages at different temperatures from a compressor and combining the extracted flows in an ejector to provide a flow having a temperature intermediate the temperatures of the extracted flow streams for augmenting the leakage flow to cool the component. The ejector thus uses high extraction air to entrain lower temperature extraction air to lower the ejector exit air temperature, reducing the magnitude of air required to cool the downstream component and enhancing the effectiveness of the advanced seal.
    • 渗漏通过密封件的流体被用来冷却密封件下游涡轮的部件。 在某些密封位置,泄漏流量受限于下游部件的冷却不会受到泄漏流的影响。 通过从与压缩机不同温度的不同阶段提取出气,并将提取的流合并在喷射器中以提供具有在提取的流动流的温度之间的温度的流动以增加泄漏流以冷却来增加冷却空气泄漏流量 组件。 因此,喷射器使用高提取空气来夹带较低温度的提取空气以降低喷射器出口空气温度,减少冷却下游部件所需的空气的大小并提高先进密封的有效性。