公开(公告)号：US20150345296A1

公开(公告)日：2015-12-03

申请号：US14290076

申请日：2014-05-29

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Dwight Eric DAVIDSON ,  Michael David McDUFFORD ,  Brian Denver POTTER ,  Stephen Joseph BALSONE ,  Stephen Paul WASSYNGER

IPC: F01D5/14

CPC classification number: F01D5/14 ,  F01D5/16 ,  F01D5/225 ,  F01D5/28 ,  F01D5/3007 ,  F05D2230/642

Abstract: A turbine bucket assembly and turbine system are disclosed. The turbine bucket assembly includes a single-lobe joint having an integral platform, the joint having a first axial length; a segmented airfoil having a root segment extending radially outward from the platform and a tip segment coupled to the root segment, the tip segment having a second axial length, which is less than the first axial length; and a turbine wheel defining a receptacle with a geometry corresponding to the single-lobe joint and being coupled to the single-lobe joint. The tip segment includes a tip segment material, the root segment includes a root segment material, and the turbine wheel includes a turbine wheel material, the root segment material and the turbine wheel material having a lower heat resistance and a higher thermal expansion than the tip segment material.

Abstract translation: 公开了一种涡轮机桶组件和涡轮机系统。 涡轮叶片组件包括具有整体平台的单瓣接头，该接头具有第一轴向长度; 具有从所述平台径向向外延伸的根部段的分段翼型件和联接到所述根部段的尖端段，所述尖端段具有小于所述第一轴向长度的第二轴向长度; 以及涡轮机叶轮，其限定具有对应于单瓣接头的几何形状并且联接到单瓣接头的插座。 尖端部分包括尖端部分材料，根部部分包括根部部分材料，并且涡轮机叶轮包括涡轮叶轮材料，根部部分材料和涡轮机叶轮材料具有比尖端更低的耐热性和更高的热膨胀 段材料