Turbomachinery blade retention system
AssigneeGeneral Electric Company
InventorsJohn Christopher Brauer, Kenneth Martin Lewis, Fred Martin Heise
Life of this patent
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Abstract
A blade retention assembly is provided that comprises: a disk, a plurality of blades, each having a dovetail disposed in one of an array of slots formed in the outer periphery of the disk, an annular inner retainer attached to the disk, and a plurality of arcuate blade retainers, the blade retainers being secured to the inner retainer by a hooked rabbet joint. A blade retainer is also provided, comprising an arcuate body having a planar inner face having an arcuate depression formed therein defining a sealing lip, and an aft face disposed opposite the inner face which has an arcuate rim formed therein.
Claims11
A rotor assembly disposed about an axis, comprising:
- a disk having an array of axially extending slots formed in an outer periphery thereof;
- a plurality of blades, each of said blades having a dovetail disposed in one of said slots;
- an annular inner retainer having a radially inner portion and a radially outer portion, said radially inner portion being attached to said disk and said radially outer portion including an annular hook extending axially towards said disk;
- and
- a plurality of arcuate blade retainers, each of said arcuate blade retainers having an inner face disposed against said blades, and an outer face having a circumferential rim formed therein, wherein said annular hook of said annular inner retainer engages said circumferential rim so as to restrain said arcuate blade retainers in a radial direction.
A rotor assembly, comprising:
- a disk having an array of axially extending slots formed in an outer periphery thereof;
- a plurality of blades, each having a dovetail disposed in one at said slots;
- an annular inner retainer having a radially inner portion and a radially outer portion, said radially inner portion being attached to said disk and said radially outer portion including an annular hook extending in axially towards said disk;
- and
- a plurality of arcuate blade retainers, each of said arcuate blade retainers having an inner face disposed against an axially facing surface of said blades, and an outer face having a circumferential rim and an arcuate blade retainer sealing flange, which extends axially away from said disk, formed therein, said annular hook of said annular inner retainer being engaged with said circumferential rim so to restrain said arcuate blade retainers in a radial direction;
- and
- a stator assembly which includes an annular axially extending first stationary sealing flange, wherein said first axially stationary sealing flange and said arcuate blade retainer sealing flange are disposed in an axially overlapping relationship.
Dependencies are inferred from the claim text.