Assembly for attaching a nozzle to a structural element of a turbine engine

Patent metadata

Field	Value
Publication number	US-10526978-B2
Application number	US-201716314431-A
Country	US
Kind code	B2
Filing date	Jun 22, 2017
Priority date	Jun 30, 2016
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

The present invention relates to an assembly ( 10 ) comprising:
an annular nozzle ( 4 ) of a turbine of a turbine engine, a structural annular element ( 6 ) of the turbine engine, the nozzle ( 4 ) and the structural annular element ( 6 ) each comprising a radial flange ( 16, 18 ), the flanges being applied axially onto one another, and at least one member ( 12 ) for axially retaining the flange ( 16 ) of the nozzle ( 4 ) with the flange ( 18 ) of the structural annular element ( 6 ), with the member being applied to one of the flanges and being able to axially retain the two flanges one on top of the other.

First claim

The invention claimed is:

1. An assembly ( 10 ) comprising:
an annular nozzle ( 4 ) of a turbine of a turbine engine ( 2 ),
a structural annular element ( 6 ) of the turbine engine ( 2 ),
the nozzle ( 4 ) and the structural annular element ( 6 ) each comprising a radial flange ( 16 , 18 ), the flanges being applied axially onto one another,
at least one member ( 12 ) for axially retaining the flange ( 16 ) of the nozzle ( 4 ) with the flange ( 18 ) of the structural annular element ( 6 ), characterized in that the member ( 12 ) comprises:
a first portion ( 27 ) applied in the axial direction onto a first flange ( 16 , 18 ) of said nozzle ( 4 ) or said structural annular element ( 6 ), and comprising at least a first radial locking means ( 36 , 39 , 41 ) axially engaged with a second complementary radial locking means ( 14 ) formed on or secured to the first flange ( 18 ) for radially locking the member ( 12 ) on the first flange ( 16 , 18 ), and
a second hook-shaped portion ( 37 ) carried by the first portion ( 27 ) and having a free end ( 32 ) arranged opposite a second flange ( 16 ) of said nozzle ( 4 ) or of said structural annular element ( 6 ).

2. An assembly according to claim 1 , wherein the first portion ( 27 ) carries a resiliently deformable tab ( 26 ) elastically stressed in the axial direction on an axial stop ( 24 ) of the nozzle ( 4 ) or the structural annular member ( 6 ), with the tab ( 24 ) extending opposite the second hook-shaped portion ( 37 ) with respect to the first portion ( 27 ).

3. An assembly ( 10 ) according to claim 2 , wherein the resiliently deformable tab ( 26 ) comprises an angled portion ( 38 ) axially extending between the axial stop ( 24 ) and the first portion ( 27 ) of the member ( 12 ).

4. An assembly ( 10 ) according to claim 1 , wherein said at least one first means is a ring ( 36 , 39 , 41 ) defining a housing receiving the second means ( 14 ) protruding from the first flange ( 18 ).

5. An assembly according to claim 4 , wherein the ring ( 36 , 39 , 41 ) forms a portion of a first flank of a U-shaped portion the second flank of which is formed by the free end ( 32 ) of the second hook-shaped portion ( 37 ).

6. An assembly according to claim 1 , wherein the first portion ( 27 ) of the member ( 12 ) comprises two first means which are two rings ( 36 , 39 , 41 ) circumferentially spaced from each other and each cooperating with a second means ( 14 ) of the first flange ( 18 ).

7. An assembly ( 10 ) according to claim 6 , wherein said two rings ( 36 , 39 , 41 ) are arranged on either side of a circumferential wall ( 30 ) forming respectively a first flank and a second flank of a U-shaped portion with the free end ( 32 ) of the second hook-shaped portion ( 37 ).

8. An assembly ( 10 ) according to claim 6 , wherein at least one of said two rings ( 39 , 41 ) has a slot ( 39 c , 41 c ).

9. An assembly ( 10 ) according to claim 7 , wherein at least one of said two rings ( 39 , 41 ) has a slot ( 39 c , 41 c ).

10. An assembly ( 10 ) according to claim 6 , wherein each ring ( 39 , 41 ) has a slot ( 39 c , 41 c ), said two slots ( 39 c , 41 c ) being oriented at 90° to each other.

11. An assembly ( 10 ) according to claim 1 , wherein the second means is a pin ( 14 ) passing through the flange ( 16 ) of the nozzle ( 4 ) and the flange ( 16 ) of the structural annular member ( 6 ) and having a portion or a head ( 22 ) protruding from the first flange ( 18 ) towards the stop ( 24 ).

12. An assembly ( 10 ) according to claim 1 , wherein the free end ( 32 ) of the hook is arranged with an axial clearance (J) opposite the second flange ( 16 ).

13. An assembly ( 10 ) according to claim 1 , wherein the nozzle ( 4 ) is formed of a plurality of angular sectors ( 4 a ) arranged circumferentially end-to-end, with the assembly ( 10 ) comprising a plurality of axially retaining members ( 12 ) each enabling the axial retention of a single sector ( 4 a ) or two abutting sectors ( 4 a ).

14. An axially retaining member ( 12 ) for an assembly ( 10 ) according to claim 1 , characterized in that it comprises:
a U-shaped portion ( 28 ) comprising a first flank ( 30 ) and a second flank ( 32 ) facing each other,
a resiliently deformable tab ( 26 ) protruding from the first flank ( 30 ) in a direction opposite the second flank ( 32 ), and
at least one ring ( 36 , 39 , 41 ) the outline of which extends in the same plane as the first flank ( 30 ).

Assignees

• Safran Aircraft Engines

Inventors

• Thomas Axel Sylvain Loïc
• Judet Maurice Guy
• Radeljak Gabrijel

Classifications

• F02C9/16 Primary

  Control of working fluid flow (F02C9/48 takes precedence; control of air-intake flow F02C7/057) · CPC title

• F05D2260/39

  by a V-shaped ring to join the flanges of two cylindrical sections, e.g. casing sections of a turbocharger · CPC title

• F05D2260/37

  by a press fit connection · CPC title

• F05D2240/40

  Use of a multiplicity of similar components · CPC title

• F01D25/24 Primary

  Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) · CPC title