公开(公告)号：US10267156B2

公开(公告)日：2019-04-23

申请号：US14290076

申请日：2014-05-29

申请人： GENERAL ELECTRIC COMPANY

发明人： Dwight Eric Davidson ,  Michael David McDufford ,  Brian Denver Potter ,  Stephen Joseph Balsone ,  Stephen Paul Wassynger

IPC分类号： F01D5/14 ,  F01D5/16 ,  F01D5/22 ,  F01D5/28 ,  F01D5/30

摘要： 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.