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    • 10. 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。