会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明公开
    • A shroudless blade
    • Schaufel ohne甲板
    • EP2267275A2
    • 2010-12-29
    • EP10165915.9
    • 2010-06-15
    • Rolls-Royce plc
    • Harvey, NeilBaralon, Stephan
    • F01D5/14
    • F01D5/145F01D5/20F01D21/045F04D29/164F04D29/34F04D29/682F04D29/684F05D2240/307F05D2250/181F05D2250/182Y02T50/673
    • A shroudless blade 2 for use in a compressor or fan of an axial flow gas turbine engine includes a treatment to the tips 10 of the blades 2 to improve the surge margin of the compressor. A series of cross bleed holes 22 are formed at the tip of the blade, which may be a stator or rotor component, extending between the pressure 8 and suction 6 sides of the blades. Notches are provided at the tip of the blades to provide initiation sites for any fatigue cracks such that the cracks propagate from the base of these slots or notches 36 and radially inwards into the body of the blades 2. The present invention provides an arrangement which by provision of the cross bleed holes the propagation of the cracks is arrested. A preferred placement and orientation for the holes 22 for best mechanical and aerodynamic performance is described.
    • 用于轴流式燃气涡轮发动机的压缩机或风扇的无挡板叶片2包括对叶片2的尖端10的处理,以改善压缩机的浪涌裕度。 在叶片的尖端处形成一系列交叉排放孔22,其可以是在叶片的压力8和吸力6侧之间延伸的定子或转子部件。 在叶片的尖端处设置切口以提供任何疲劳裂纹的起始位置,使得裂纹从这些槽或凹槽36的基部传播并径向向内进入叶片2的本体。本发明提供了一种布置,其通过 提供交叉泄漏孔裂缝的传播被阻止。 描述了用于最佳机械和空气动力学性能的孔22的优选布置和取向。