Patent
Low-pressure turbine shroud
TLDR
A turbine shroud is formed by a ring of butted shroud segments, and each turbine shroud segment has a radially inwardly projecting annular flange which is seated on a radial outwardly facing surface of an annular tip of the outer shroud of the downstream nozzle stage as discussed by the authors.Abstract:
A turbine shroud is formed by a ring of butted shroud segments. Each turbine shroud segment has a radially inwardly projecting annular flange which is seated on a radially outwardly facing surface of an annular tip of the outer shroud of the downstream nozzle stage. This flange is free to slide axially relative to the annular tip during thermal expansion of the nozzle outer shroud in the axial direction. Each turbine shroud segment has a spring seated thereon which urges the radially inwardly projecting flange toward the annular tip of the nozzle outer shroud. Honeycomb material attached to the turbine shroud segment discourages the flow of hot gases through the gap betwen the flange and annular tip of the outer shroud of the downstream nozzle stage attributable to seam chording, thereby reducing the leakage of hot gas into the spaces between the shrouds and the outer casing.read more
Citations
More filters
Patent
Gas turbine engine shroud seals
TL;DR: In this paper, a ring seal is provided for sealing a joint between a turbine blade tip shroud and a mounting structure where an annular gap is formed having an "L" shaped cross section, the ring seal having a "C" shaped configuration and one of the legs of the "C", extending within an axial component of the gap.
Patent
Turbine shroud segment
TL;DR: In this paper, a shroud segment for being incorporated in a gas turbine engine so as to suppress influence of hot combustion gas on a turbine case of the turbine engine is provided with a back plate having first and second plate portions formed in an arc shape and supported by the turbine case, a touching member integrally formed on an inner surface of the back plate for touching with a rotating turbine blade.
Patent
Mounting apparatus for low-ductility turbine shroud
Jason David Shapiro,Roger Lee Doughty,Aaron Michael Dziech,Victor Hugo Silva Correia,Lampes Elias Harry,Robert Carella,Brian Kenneth Corsetti +6 more
TL;DR: In this article, an annular support member (14), a turbine shroud (12), and a spring (32) are arranged between the support member and the turbine shroud to push the shroud to a concentric position within the support members.
Patent
Spring-backed abradable seal for turbomachinery
TL;DR: In this paper, an annular turbine seal is presented for a turbine between a rotatable component having an axis of rotation and a turbine housing about the same axis of rotational rotation.
Patent
Gas turbine shroud structure
TL;DR: In this paper, a gas turbine shroud structure comprising a shroud support component attached to an inner surface of a turbine casing, a shroud segment 14 divided in a peripheral direction and supported by the inner surface, and a heat-resistant restricting spring was revealed.
References
More filters
Patent
Thermal actuated valve for clearance control
TL;DR: In this paper, a shroud closely surrounding a high thermal inertia rotor is provided with a support structure having low thermal inertia characteristics, which is selectively exposed to different temperature mediums during transient operation by way of a thermal actuated valve so as to cause a rapid growth thereof during periods of engine acceleration and a slow shrinkage thereof during deceleration of the engine.
Patent
Ceramic turbine shroud assembly
TL;DR: In this article, a high temperature turbine shroud assembly for an aircraft gas turbine engine comprising a plurality of arcuate ceramic blocks arranged in a ring is presented, supported by a pair of annular support members which retain the blocks in the assembly.
Patent
Sealed shroud for rotating body
James J. Sandy,Brian P. Huth +1 more
TL;DR: In this article, an annular turbine blade tip shroud is provided having a construction for minimizing leakage of the cooling fluid and preventing ingestion of hot gases into said cooling flow, a tip shroud support ring is located on the inner surface of said casing with tip shroud members affixed thereto and encasing the blade tips.
Patent
Shroud support with impingement baffle
TL;DR: In this article, a 360° impingement baffle is attached directly to a shroud support structure such that the combination provides a low-leakage, high pressure plenum for supplying impeding airflow to the turbine rotor shroud for cooling purposes.
Patent
Sealing ring for a turbine rotor of a turbo machine and turbo machine installations provided with such rings
TL;DR: In this article, the rotor of a turbine is surrounded by a fixed ring, formed by a metal ring supporting internally an annular thermal screen, in the form of ceramic segments, and expansion and contractions of the metal ring under the action of air which is supplied to the turbine in order to control the rotor clearance are transformed into displacements of radial faces of the ring in contact with radial flanges rigid with the turbine casing and seals.