Turbomachine distributor comprising a thermal protection sheet with a radial stop, and associated thermal protection sheet

Patent metadata

Field	Value
Publication number	US-9835049-B2
Application number	US-201314427723-A
Country	US
Kind code	B2
Filing date	Sep 9, 2013
Priority date	Sep 12, 2012
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A distributor of a turbomachine configured to be mounted in a housing, including: a plurality of segments; a plurality of anti-rotation pins, mounted both on a segment of the distributor and on the housing; and a thermal protection sheet, including at least one axial tab configured to radially abut against an inner face of a first anti-rotation pin, and at least one radial tab configured to axially abut against an upstream face of a second anti-rotation pin.

First claim

The invention claimed is:

1. A distributor for a turbomachine, or a low-pressure distributor, to be mounted in a housing, comprising:
a plurality of segments circumferentially distributed around an axis of rotation of the turbomachine;
a plurality of anti-rotation pins, each of which is mounted both on a segment of the distributor and on the housing; and
a thermal protection metal sheet, positioned between the housing and the segments of the distributor, comprising a plurality of tabs, each tab bearing against an anti-rotation pin;
wherein the plurality of tabs of the thermal protection metal sheet comprises at least one axial tab radially abutting against a radially inward face of a first anti-rotation pin, and at least one radial tab axially abutting against an upstream face of a second anti-rotation pin.

2. The distributor according to claim 1 , wherein the thermal protection metal sheet comprises a plurality of the axial tabs and the radial tabs.

3. The distributor according to claim 1 , wherein the number of the radial tabs and the number of the axial tabs is equal.

4. The distributor according to claim 1 , wherein the radial tabs and the axial tabs alternate along the thermal protection metal sheet, around the axis of rotation of the turbomachine, and are separated by an indentation, or with removal of material.

5. The distributor according to claim 1 , wherein the at least one axial tab is at a distance from the first anti-rotation pin when the turbomachine is at rest.

Assignees

• Snecma

Inventors

• Arnould Julien

Classifications

• F05D2260/231

  Preventing heat transfer · CPC title

• F05D2230/64

  using positioning or alignment devices for aligning or centring, e.g. pins · CPC title

• F01D11/08

  for sealing space between rotor blade tips and stator (specially-shaped blade tips therefor F01D5/20) · CPC title

• F01D25/12 Primary

  Cooling · CPC title

• F01D9/042 Primary

  fixing blades to stators (fixing stator-rings in the casing or to each other F01D25/246) · CPC title