Piston seal ring
AssigneeRtx Corporation
InventorJonathan L. Miller
Life of this patent
Estimating the term…
Abstract
A split ring seal has: a first circumferential end and a second circumferential end; an inner diameter surface and an outer diameter surface; a first axial end face and a second axial end face. The outer diameter surface has a sealing surface. The first axial end face has: a first section; a second section outboard of the first section; and an axial protrusion between the first section and the second section The second axial end face has: a first sealing surface; a second sealing surface radially outboard of the first sealing surface; a circumferential channel between the first surface and the second sealing surface; and a plurality of channels extending radially outward from the circumferential channel.
Claims22
A split ring seal comprising:
- a first circumferential end and a second circumferential end;
- an inner diameter surface and an outer diameter surface, the outer diameter surface having a sealing surface;
- and
- a first axial end face and a second axial end face, wherein:
- the seal comprises a metallic substrate and a coating;
- the first axial end face has:
- a first section;
- a second section outboard of the first section;
- and
- an axial protrusion between the first section and the second section;
- and
- the second axial end face has:
- a first surface;
- a second surface radially outboard of the first surface;
- a circumferential channel between the first surface and the second surface;
- and
- a plurality of channels extending radially outward from the circumferential channel to an outboard radial extreme of the outer diameter surface.
A gas turbine engine comprising:
- a carbon seal system having:
- a seat;
- a carbon seal;
- an inner member being a seal carrier carrying the carbon seal and having a groove;
- an outer member being a seal support encircling the inner member;
- one or more bias springs axially biasing the seal carrier from the support to bias the seal into engagement with the seat;
- and
- a split ring seal accommodated in the groove and contacting an inner diameter surface of the seal support and comprising:
- a first circumferential end and a second circumferential end;
- an inner diameter surface and an outer diameter surface, the outer diameter surface having a sealing surface;
- and
- a first axial end face and a second axial end face,
- wherein:
- the first axial end face has:
- a first section;
- a second section outboard of the first section;
- and
- an axial protrusion between the first section and the second section;
- and
- the second axial end face has:
- a first surface;
- a second surface radially outboard of the first surface;
- a circumferential channel between the first surface and the second surface;
- and
- a plurality of channels extending radially outward from the circumferential channel to an outermost section of the outer diameter surface.
Dependencies are inferred from the claim text.