Patent
Floating non-contact seal vertical lip
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TLDR
In this paper, a seal assembly includes an annular base, a spring, a shoe, a first channel, a seal cover, and a seal is disposed between the seal cover and the shoe such that a downstream face of the seal is in contact with an upstream face of a shoe.Abstract:
A seal assembly includes an annular base, a spring, a shoe, a first channel, a seal cover, and a seal. The spring includes a beam and is connected to the annular base. The shoe is disposed radially inward of the annular base and connected to the spring. The shoe includes an upstream portion, a downstream portion, and a lip connected to and extending radially outward from the upstream portion of the shoe. The spring extends from the annular base to the shoe. The first channel is positioned between the shoe and the beam of the spring. The seal is disposed between the seal cover and the shoe such that a downstream face of the seal is in contact with an upstream face of the shoe.read more
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Patent
Non-contact seal with resilient biasing element(s)
TL;DR: In this article, the authors propose a set of spring elements, including a first mount, a second mount and a spring beam, to connect the first and second components of a sealed device.
Patent
Articulating cantilevered hydrostatic seal
TL;DR: A hydrostatic seal (100) configured to be disposed between relatively rotatable components is provided in this paper, which includes a seal housing (107) and a shoe (108) having a first axially extending segment (109), a second axially expanding segment (120), and a radially extended segment (116) joining the first (109) and second (120) axially extended segments.
Patent
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TL;DR: In this paper, a non-contact seal assembly is described, which includes a plurality of seal shoes arranged about a centerline in an annular array, the seal shoes including a first seal shoe extending axially along the centerline between a first shoe end and a second shoe end.
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Hydrostatic non-contact seal with weight reduction pocket
TL;DR: In this paper, a non-contact seal assembly is described, which includes a plurality of seal shoes arranged about a centerline in an annular array, the seal shoes include a first seal shoe extending axially along the centerline between a first shoe end and a second shoe end.
Patent
Cantilevered hydrostatic advanced low leakage seal
TL;DR: In this paper, a hydrostatic seal configured to be disposed between relatively rotatable components is provided, which includes a shoe extending axially from a forward end to an aft end to define an axial length, the shoe cantilevered to the seal housing at one of the forward end and the shoe free at the other end.
References
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Hydrodynamic brush seal
TL;DR: In this paper, a hybrid brush seal is provided for sealing a circumferential gap between two machine components that are relatively rotatable with respect to each other having seal bristles mounted in a ring shape on a first machine component with bristle ends directed at the sealing surface of the second, rotating machine component.
Patent
Non-contact seal for a gas turbine engine
TL;DR: In this paper, the authors define a noncontact seal as a combination of a primary seal and a secondary seal, each of which acts on at least one shoe (134) that is installed with clearance relative to one of a rotor and a stator in a position to create a non-contact seal therewith.
Patent
Seal with stacked sealing elements
TL;DR: In this article, a hybrid seal for sealing the circumferential gap between a first machine component and a second machine component is proposed, where a shoe (16) extends along one of the machine components in a position to create a noncontact seal, at least one spring element (24) connected between the shoe and the machine component, and a stack of sealing elements (48, 50) located within a slot (22) formed in the shoe.
Patent
Double Padded Finger Seal
TL;DR: In this article, a double padded finger seal with both pads oriented axially in the same direction was presented, where the sealing apparatus may optionally utilize a padless third laminate.
Patent
Self-adjusting non-contact seal
TL;DR: A self-adjusting noncontact noncontact seal for sealing a circumferential gap comprising at least one shoe (130), a spring element (24), and a secondary sealing (48, 50) was proposed in this paper.