Sealing device for an oil enclosure in a turbine engine bearing

Patent metadata

Field	Value
Publication number	US-9810095-B2
Application number	US-201615099880-A
Country	US
Kind code	B2
Filing date	Apr 15, 2016
Priority date	Apr 17, 2015
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A sealing device for a turbine engine bearing oil enclosure including a rotor shaft; an annular cover secured to an engine casing and arranged around the rotor shaft to co-operate therewith to define an oil enclosure that is to receive a bearing rotatably supporting the rotor shaft relative to the engine casing; a labyrinth seal mounted on the rotor shaft facing one end of the cover; an annular rim mounted inside the cover; a dynamic annular gasket interposed radially between the rim and the rotor shaft; and a clip for axially blocking the rim inside the cover and including at least one latch passing radially through the rim and being received radially inside a groove formed in the cover, is provided.

First claim

The invention claimed is:

1. A sealing device for a turbine engine bearing oil enclosure, comprising:
a rotor shaft;
an annular cover secured to an engine casing and arranged around the rotor shaft to co-operate therewith to define an oil enclosure that is to receive a bearing rotatably supporting the rotor shaft relative to the engine casing;
a labyrinth seal mounted on the rotor shaft facing one end of the cover;
an annular rim mounted inside the cover;
a dynamic annular gasket interposed radially between the rim and the rotor shaft; and
a clip for axially blocking the rim inside the cover and including at least one latch passing radially through an annular groove formed in the rim and being received radially inside a groove formed in the cover.

2. A device according to claim 1 , wherein the axial blocking clip comprises a resilient pin received inside the rim and provided with a latch passing radially through the annular groove formed in the rim and being received radially inside the groove formed in the cover, and means for locking the resilient pin inside the rim.

3. A device according to claim 2 , wherein the axial blocking clip includes at least one catch secured to the resilient pin for being received radially in a hole formed in the rim so as to lock the resilient pin inside the rim.

4. A device according to claim 2 , wherein the axial blocking clip includes at least one stud forced radially into a hole formed in the rim and coming into radial abutment against the resilient pin to lock the resilient pin inside the rim.

5. A device according to claim 1 , wherein the axial blocking clip comprises a rigid pin received inside the rim and provided with a latch passing radially through the annular groove formed in the rim and being received radially inside the groove formed in the cover, and a flexible holder pin for holding the rigid pin inside the rim.

6. A device according to claim 5 , wherein the flexible holder pin comes circumferentially into abutment against the rigid pin and includes projections projecting radially outwards for blocking the flexible holder pin inside the rim by expansion of the pin.

7. A device according to claim 5 , wherein the flexible holder pin includes a latch passing radially through the rim and received radially inside the groove formed in the cover.

8. A device according to claim 7 , wherein the latch of the rigid pin and the latch of the flexible holder pin are diametrically opposite each other.

9. A device according to claim 1 , wherein the rim includes, at an upstream end, a shoulder projecting radially outwards and axially upstream relative to the cover.

10. A turbine engine including at least one bearing oil enclosure provided with a sealing device according to claim 1 .

Assignees

• Snecma

Inventors

• Morreale Serge Rene
• Igel Dominik

Classifications

• F05D2220/30

  in turbines · CPC title

• F01D11/02

  by non-contact sealings, e.g. of labyrinth type (for sealing space between rotor blade tips and stator F01D11/08) · CPC title

• F16J15/447

  Labyrinth packings · CPC title

• F16J15/002

  comprising at least two sealings in succession (F16J15/162, F16J15/40 take precedence) · CPC title

• F16J15/442

  segmented · CPC title