Seal housing pre-taper

Patent metadata

Field	Value
Publication number	US-10626741-B2
Application number	US-201514601890-A
Country	US
Kind code	B2
Filing date	Jan 21, 2015
Priority date	Jan 21, 2015
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

Aspects of the disclosure are directed to an apparatus comprising a first section, and a second section coupled to the first section, wherein the second section is configured to substantially coincide with an edge of a seal and includes a pre-tapered edge.

First claim

What is claimed is:

1. An apparatus for an engine, comprising:
a seal;
a seal runner; and
a housing including:
a first section; and
a second section coupled to the first section,

wherein a first radial surface of the second section is directly adjacent to a second radial surface of the seal, and
wherein the first radial surface is tapered with respect to the second radial surface of the seal and includes a first end that is proximate the seal runner and a second end that is radially distant from the first end with respect to the seal runner,
wherein the second section has a first axial width at the first end which is larger than a second axial width of the second section at the second end, and
wherein the first end is axially forward of the second end with respect to an axial centerline of the engine.

2. The apparatus of claim 1 , wherein a direction of the taper is opposite to a direction of a coning of the second section.

3. The apparatus of claim 1 , wherein the taper is equal to 0.004 inches per inch.

4. The apparatus of claim 1 , wherein the apparatus is configured to house two rings.

5. The apparatus of claim 1 , wherein the first radial surface is tapered from the first end to the second end.

6. A system configured for providing a seal for an aircraft engine, comprising:
a seal runner,
at least two rings arranged adjacent to one another; and
a housing of the engine comprising a plurality of sections configured to house the at least two rings,
wherein a first radial surface of one of the sections is directly adjacent to a second radial surface of one of the at least two rings,
wherein the first radial surface is tapered with respect to the second radial surface of one of the at least two rings and includes a first end that is proximate the seal runner and a second end that is radially distant from the first end with respect to the seal runner,
wherein the second section has a first axial width at the first end which is larger than a second axial width of the second section at the second end, and
wherein the first end is axially forward of the second end.

7. The system of claim 6 , wherein a direction of the taper is opposite to a direction of a coning of the one of the sections.

8. The system of claim 6 , wherein the at least two rings are carbon rings.

9. The system of claim 6 , wherein the taper is between zero and 0.050 inches per inch.

10. The system of claim 6 , wherein the first radial surface is tapered from the first end to the second end.

11. A seal assembly for an engine, comprising:
a seal; and
a seal housing having a cavity configured to receive the seal, the cavity having a closed end and an open end, the seal housing including a first housing section and a second housing section in contact with one another, the first housing section having a first radial surface and the second housing section having a tapered second radial surface, wherein the first radial surface and the tapered second radial surface define opposite sides of the cavity;
wherein the second housing section is rotatable relative to the first housing section between a first position and a second position;
wherein in the first position the tapered second radial surface converges toward the first radial surface in the direction from the closed end to the open end of the cavity and the open end of the cavity has a first axial width;
wherein in the second position the open end of the cavity has a second axial width that is greater than the first axial width; and
wherein in the second position the tapered second radial surface is non-convergent with the first radial surface in the direction from the closed end to the open end of the cavity.

12. The seal assembly of claim 11 , wherein the second housing section is configured to rotate from the first position to the second position in response to an airflow in contact with the tapered second radial surface.

13. The seal assembly of claim 11 , wherein the tapered second radial surface is tapered from an outer radial end of the second housing section, in contact with the first housing section, and an inner radial end of the second housing section opposite the outer radial end.

Assignees

• United Technologies Corp

Inventors

• Miller Jonathan L
• Shuaib Nasr A

Classifications

• F01D11/003

  by packing rings; Mechanical seals · CPC title

• F16J15/442

  segmented · CPC title

• F01D11/00 Primary

  Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {; sealing arrangements for transition ducts of combustor cans F01D9/023}) · CPC title

• F05D2250/292

  tapered · CPC title

• F16J15/441 Primary

  with floating ring · CPC title