High excursion ring seal
AssigneeGeneral Electric Company
InventorElias H. Lampes
Life of this patent
Estimating the term…
Abstract
A seal includes first and second axially opposite loops integrally joined together by a coextensive web in a collective ring having a circumferential split. The two loops are arcuate in section, with radially outer and inner sealing lands. And, the web is disposed radially between the outer and inner lands. The loops are disposed in corresponding grooves of adjoining members for effecting a seal therebetween and accommodating differential radial and axial thermal movement.
Claims20
An excursion seal for sealing an axial gap between first and second adjoining annular members subject to differential axial and radial excursion therebetween during fluid channeling operation, comprising:
- first and second axially opposite loops integrally joined together by a coextensive web in a collective ring having a circumferential split and uniform gauge;
- said first loop being arcuate in section, with radially outer and inner sealing lands sized to engage a first annular groove extending axially in said first member for accommodating said axial excursion;
- said second loop being arcuate in section, with radially outer and inner sealing lands sized to engage a second annular groove extending axially in said seond member for accommodating said axial excursion;
- and
- said web being disposed radially between said outer and inner lands of said first and second loops for reducing bending moment of inertia to permit twisting of said seal to accommodate said radial excursion.
An excursion seal for sealing an axial gap between a gas turbine engine combustor outer liner and a turbine nozzle outer band subject to differential axial and radial excursion therebetween during channeling of combustion gases therethrough, comprising:
- first and second axially opposite single loops integrally joined together by a coextensive web in a collective ring having a circumferential split and uniform gauge;
- said first loop being arcuate in section, with radially outer and inner sealing lands sized to engage a first annular groove extending axially in said outer liner for accommodating said axial excursion;
- said second loop being arcuate in section, with radially outer and inner sealing lands sized to engage a second annular groove extending axially in said outer band for accommodating said axial excursion;
- and
- said web being disposed radially between said outer and inner lands of said first and second loops for reducing bending moment of inertia to permit twisting of said seal to accommodate said radial excursion.
Dependencies are inferred from the claim text.