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    • 4. 发明申请
    • TURBINE ABRADABLE LAYER WITH PROGRESSIVE WEAR ZONE TERRACED RIDGES
    • 涡轮增压层与渐进磨损区域的RIDGES
    • WO2015130535A1
    • 2015-09-03
    • PCT/US2015/016465
    • 2015-02-19
    • SIEMENS ENERGY, INC.
    • LEE, Ching-PangTHAM, Kok-MunAZAD, Gm SalamGAO, ZhihongHITCHMAN, NeilSANSOM, David G.ALLMON, Barry L.
    • F01D11/12
    • F01D11/00F01D11/08F01D11/12F01D11/122F01D25/24F05D2220/32F05D2240/11F05D2250/181F05D2250/185F05D2300/6033
    • Turbine and compressor casing abradable component embodiments for turbine engines, with composite grooves and vertically projecting rows of stepped first ridges in planform patterns, to reduce, redirect and/or block blade tip airflow leakage downstream into the grooves rather than from turbine blade airfoil high to low pressure sides. Each stepped first ridge has a first portion (332B) proximal the substrate surface with a pair of first opposed lateral walls (335B, 336B) terminating in a plateau (334B) having a first cross sectional width, and a second portion (332A) with a pair of second opposed lateral walls (335A, 336A) terminating in a ridge tip (334A) having a second cross sectional width smaller than the first cross sectional width. These ridge or rib embodiments have first lower and second upper wear zones. The lower zone, which at and below first portion height, optimizes engine airflow characteristics, while the upper zone, between the plateau and the second portion ridge is optimized to minimize blade tip gap and wear by being more easily abradable than the lower zone.
    • 用于涡轮发动机的涡轮机和压缩机壳体可磨损部件实施例,其具有平面状图案中的复合凹槽和垂直突出的阶梯状第一脊的行,以减少,重定向和/或阻挡下游进入凹槽的叶片尖端气流泄漏,而不是从涡轮叶片翼型件高到 低压侧。 每个阶梯形的第一脊具有靠近基底表面的第一部分(332B),具有终止于具有第一横截面宽度的平台(334B)中的一对第一相对的侧壁(335B,336B)和具有第一部分 终止于具有小于第一横截面宽度的第二横截面宽度的脊尖端(334A)中的一对第二相对侧壁(335A,336A)。 这些脊或肋实施例具有第一下和第二上磨损区。 在第一部分高度处和下方的下部区域优化发动机气流特性,同时优化平台和第二部分脊之间的上部区域,以通过比下部区域更容易磨损来最小化叶片尖端间隙和磨损。