Flapper seal apparatus and system
AssigneeUnited Technologies Corporation
InventorsRichard N. Allen, Brandon W. Spangler
Life of this patent
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Abstract
An engine component for isolating a first pressure and/or first flow and a second pressure and/or second flow is provided. The engine component may comprise a body portion, a first seal element and a second seal element. The body portion may include a first standoff and a second standoff. The first seal element housed within the body portion. The second seal element may also be housed within the body portion. The second seal element may be coupled to the first seal element.
Claims20
A seal for sealing a space defined by a standoff portion of at least one engine component, the seal comprising:
- a first seal element;
- and
- a second seal element offset to the first seal element, the first seal element and the second seal element defining a gap between a first surface of the first seal element and a second surface of the second seal element, wherein the second surface is oriented toward the first surface, and wherein the gap is configured to receive the standoff portion with the standoff portion located between the first surface of the first seal element and the second surface of the second seal element,
- wherein the first seal element and the second seal element are configured to respectively seal against opposite sides of the standoff portion such that when the first surface of the first seal element contacts a first side of the standoff portion, the second surface of the second seal element is spaced apart from a second side of the standoff portion opposite the first side of the standoff portion.
A sealing system for a gas turbine engine, the sealing system comprising:
- an engine component having a standoff portion, the standoff portion having a first side and a second side opposite the first side;
- and
- a seal configured to selectively load on one of the first side or the second side based on relative pressure on the first side and the second side, the seal comprising:
- a first seal element;
- and
- a second seal element offset to the first seal element, wherein the standoff portion is located between a first surface of the first seal element and a second surface of the second seal element, wherein the second surface is oriented toward the first surface, and wherein the first seal element and the second seal element are configured to respectively seal against the first side and the second side of the standoff portion such that when the first surface of the first seal element contacts the first side of the standoff portion, the second surface of the second seal element is spaced apart from the second side of the standoff portion.
A stator vane, comprising:
- a body portion including a first standoff portion;
- a first seal element housed within the body portion;
- and
- a second seal element housed within the body portion, the second seal element coupled to the first seal element, wherein the first standoff portion is located between a first surface of the first seal element and a second surface of the second seal element oriented toward the first surface of the first seal element, and wherein the first seal element is configured to load a first side of the first standoff portion in response to a first pressure condition and the second seal element is configured to load a second side of the first standoff portion opposite the first side in response to a second pressure condition such that when the first surface of the first seal element contacts the first side of the first standoff portion, the second surface of the second seal element is spaced apart from the second side of the first standoff portion.
Dependencies are inferred from the claim text.