Conformal seal

Patent metadata

Field	Value
Publication number	US-9957827-B2
Application number	US-201514830771-A
Country	US
Kind code	B2
Filing date	Aug 20, 2015
Priority date	Oct 24, 2014
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section and an adjacent second seal section, each including a base and two extending legs defining respective first and second ends of the seal. At least the first seal section includes a first plurality of slots extending from the first end to the base and a second plurality of slots extending from the second end to the base.

First claim

What is claimed:

1. A seal for sealing a space defined by first and second adjacent components disposed about an axial centerline, the seal comprising:
a first seal section including a first base, a first leg extending from the first base and defining a first distal end, and a second leg extending from the first base and defining a second distal end; and
a complimentary second seal section disposed adjacent the first seal section, the second seal section including a second base, a third leg extending from the second base and a fourth leg extending from the second base;
wherein the first seal section includes a first plurality of slots extending from the first end to the first base and a second plurality of slots extending from the second end to the first base;
wherein the second seal section includes a third plurality of slots extending from the first end to the second base and a fourth plurality of slots extending from the second end to the second base;
wherein each of the first plurality of slots is circumferentially offset from each of the third plurality of slots and each of the second plurality of slots is circumferentially offset from each of the fourth plurality of slots;
wherein the first seal section is configured to sealingly engage with the first and second components;
a first protrusion disposed on the first leg and located at the first distal end;
a second protrusion disposed on the second leg and located at the second distal end;
a third protrusion disposed on the first seal section;
wherein the seal contacts a first surface of the first component at the first protrusion along a first single substantially circumferential line of contact;
wherein the seal contacts the second component at the second protrusion along a second single substantially circumferential line of contact; and
wherein the seal contacts a second surface of the first component at the third protrusion along a third single substantially circumferential line of contact.

2. The seal of claim 1 , wherein the first and second seal sections are substantially C-shaped.

3. A seal for sealing a space defined by first and second adjacent components disposed about an axial centerline, the seal comprising:
a first seal section including a first base, a first leg extending from the first base and defining a first distal end, and a second leg extending from the first base and defining a second distal end;
a complimentary second seal section disposed adjacent the first seal section;
wherein the first seal section includes a first plurality of slots extending from the first end to the first base and a second plurality of slots extending from the second end to the first base;
wherein the first seal section is configured to sealingly engage with the first and second components;
wherein the second seal section comprises a plurality of discrete arc segments disposed adjacent one another and defining a plurality of gaps therebetween;
wherein the plurality of gaps extend from the first end to the second end and are offset from each of the plurality of slots;
a first protrusion disposed on the first leg and located at the first distal end;
a second protrusion disposed on the second leg and located at the second distal end;
a third protrusion disposed on the first seal section;
wherein the seal contacts a first surface of the first component at the first protrusion along a first single substantially circumferential line of contact; and
wherein the seal contacts the second component at the second protrusion along a second single substantially circumferential line of contact; and
wherein the seal contacts a second surface of the first component at the third protrusion along a third single substantially circumferential line of contact.

4. The seal of claim 1 , wherein the base, the first leg and the second leg are each substantially C-shaped and the seal is substantially E-shaped.

5. The seal of claim 1 , wherein the first base, the first leg and the second leg are substantially co-linear, the second base, the third leg and the fourth leg are substantially co-linear, and wherein the first protrusion is a first rounded end extending from the first leg and the second protrusion is a second rounded end extending from the second leg and wherein the third leg has a rounded end located proximate to the first rounded end and the fourth leg has a rounded end located proximate to the second rounded end.

6. The seal of claim 5 , further comprising:
a first plurality of tabs extending from the third leg and curving toward the first seal section; and
a second plurality of tabs extending from the second leg and curving toward the second seal section.

7. The seal of claim 1 , wherein the first base, the first leg and the second leg are substantially co-linear, the second base, the third leg and the fourth leg are substantially co-linear, and wherein the first protrusion is a first rounded end extending from the first leg and wrapping around the third leg; and the second protrusion is a second rounded end extending from the second leg and wrapping around the fourth leg.

8. A system, comprising:
a first component including a first surface;
a second component including a second surface, the second component disposed adjacent the first component and defining a seal cavity therebetween;
wherein the first and second components are disposed about an axial centerline; and
a seal disposed in the seal cavity, the seal including:
a first seal section including a first base, a first leg extending from the first base and defining a first end, and a second leg extending from the first base and defining a second end; and
a complimentary second seal section disposed adjacent the first seal section, the second seal section including a second base, a third leg extending from the second base and a fourth leg extending from the second base;
wherein the first seal section includes a first plurality of slots extending from the first end to the first base and a second plurality of slots extending from the second end to the first base;
wherein the second seal section includes a third plurality of slots extending from the first end to the second base and a fourth plurality of slots extending from the second end to the second base;
wherein each of the first plurality of slots is circumferentially offset from each of the third plurality of slots and each of the second plurality of slots is circumferentially offset from each of the fourth plurality of slots;
wherein pressure within the seal cavity urges the seal to seat against the first surface and the second surface;
a first protrusion disposed on the first leg and located at the first distal end;
a second protrusion disposed on the second leg and located at the second distal end;
a third protrusion disposed on the first seal section;
wherein the seal contacts a first surface of the first component at the first protrusion along a first single substantially circumferential line of contact;
wherein the seal contacts the second component at the second protrusion along a second single substantially circumferential line of contact; and
wherein the seal contacts a second surface of the first component at the third protrusion along a third single substantially circumferential line of contact.

9. The seal of claim 8 , wherein the first base, the first leg and the second leg are substantially co-linear, the second base, the third leg and the fourth leg are substantially co-linear, wherein the first protrusion is a first rounded end extending from the first leg and second protrusion is a second rounded end extending from the second leg and wherein the third leg has a rounded end located proximate to the first rounded end and the f

Assignees

• United Technologies Corp

Inventors

• Davis Timothy M
• Lutjen Paul M
• Rogers Mark J

Classifications

• F16J15/104

  characterised by structure · CPC title

• F16J15/0887 Primary

  the sealing effect being obtained by elastic deformation of the packing · CPC title

• F01D11/005 Primary

  Sealing means between non relatively rotating elements · CPC title

• F05D2220/32

  in gas turbines · CPC title

• F05D2240/55

  Seals · CPC title