Ring segment fixing device for e.g. turbojet engine, has circumferential edges provided at upstream ends of ring segments and forming hooks that engage axially on one upstream end of annular rail

摘要

#CMT# #/CMT# The device has circumferential edges (70) provided at upstream ends of ring segments (20) and cooperating with an annular rail (50) of a turbine casing (16). The circumferential edges of the segments form hooks that engage axially on one upstream end of the rail. The edges move axially on the upstream end of the rail by a turbine nozzle (12) and are held radially by the turbine casing. #CMT# : #/CMT# An independent claim is also included for a ring segment comprising a circumferential edge. #CMT#USE : #/CMT# Used for fixing a ring segment on a casing of a turbine of a turbomachine e.g. turbojet engine and turbo-propeller of an aircraft (all claimed). #CMT#ADVANTAGE : #/CMT# The ring segments are hooked directly on the casing by axial engagement of the upstream edges on the rail, thus eliminating the need for a locking unit that maintains the edges of the segments on the rail, and hence providing a simple and lightweight fixing device in a cost effective manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows an axial sectional view of a ring segment fixing device. 12 : Turbine nozzle 16 : Turbine casing 20 : Ring segments 50 : Annular rail 70 : Circumferential edges.