Patent ID: 7828521
Filing Date: 2010-11-09
Classification: F01D

Abstract:
1. A turbine module for a gas turbine engine comprising: an annular distributor ring; and a turbine rotor inside a casing, wherein the annular distributor includes a plurality of elements in the form of a ring sector, of which a first part supports a plurality of fixed blades positioned radially between the first part and an internal platform, said first part includes a radially extending portion with a first radial support surface which abuts against a radial support of said casing, and a second part forms a seal with tips of turbine rotor blades, wherein said elements in the form of a ring sector are held inside the casing by first and second attachment units which attach said elements inside said casing, wherein said first attachment unit includes an axial hook attached to the casing and a pair of axial hooks attached to said one element, wherein said second attachment unit includes an axially oriented finger that fits between two sectors of another distributor located downstream of said annular distributor such that said axially oriented finger forms an anti-rotation locking device for said one element, wherein said plurality of fixed blades positioned radially between the first part and the internal platform, said first and second parts of said ring sector, and said internal platform are all formed of a single cast part thereby forming a modular element, wherein a first hook of said pair of axial hooks abuts said axial hook attached to the casing and a second hook of said pair of axial hooks abuts an abradable material of an adjacent element, wherein said first radial support surface is a free end of said radially extending portion which extends radially from said first part of said one element and is located downstream of said pair of axial hooks and upstream of said axially oriented finger, and wherein said second part of said one element extends downstream from said radially extending portion.