Methods and apparatus to reduce seal rubbing within gas turbine engines
First Claim
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1. A method for assembling a seal assembly for a gas turbine engine rotor assembly, said method comprising:
- coupling a disk retainer to a first stage disk; and
coupling an interstage seal assembly including an outer shell within the rotor assembly such that a downstream arm extending from the outer shell engages a second stage disk while an upstream arm extending from the outer shell engages the disk retainer in an interference fit.
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Abstract
A method facilitates assembling a seal assembly for a gas turbine engine rotor assembly. The method comprises coupling a disk retainer to a first stage disk, and coupling an interstage seal assembly including an outer shell within the rotor assembly such that a downstream arm extending from the outer shell engages a second stage disk while an upstream arm extending from the outer shell engages the disk retainer.
35 Citations
16 Claims
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1. A method for assembling a seal assembly for a gas turbine engine rotor assembly, said method comprising:
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coupling a disk retainer to a first stage disk; and coupling an interstage seal assembly including an outer shell within the rotor assembly such that a downstream arm extending from the outer shell engages a second stage disk while an upstream arm extending from the outer shell engages the disk retainer in an interference fit. - View Dependent Claims (2, 3, 4)
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5. A seal assembly for a gas turbine engine including a first stage disk and a second stage disk, said seal assembly comprising:
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a disk retainer; and an interstage seal assembly extending between the first and second stage disks, said interstage seal assembly comprising a radially outer shell extending radially outward from a web portion, said outer shell comprising an upstream arm and a downstream arm extending outwardly from said outer shell, said disk retainer coupled between said outer shell upstream arm and the first stage disk, said downstream arm coupled to said second stage disk wherein said upstream arm is coupled to said disk retainer with an interference fit and said downstream arm is coupled to the second stage disk with an interference fit. - View Dependent Claims (6, 7, 8, 9, 10)
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- 11. A gas turbine engine comprising a rotor assembly comprising a first stage disk, a second stage disk, and a seal assembly extending therebetween, said seal assembly comprising a disk retainer and an interstage seal assembly, wherein said seal assembly disk retainer is coupled between said first stage disk and said interstate seal, said interstage seal assembly comprising a radially outer shell and a web portion, said outer shell extending radially outward from said web portion and comprising an upstream arm and a downstream arm, said disk retainer coupled between said outer shell upstream arm and said first stage disk, said downstream arm coupled to said second stage disk, wherein said interstate seal assembly upstream arm is coupled to said disk retainer by an interference fit and said downstream arm is coupled to said second stage disk by an interference fit.
Specification