NON-CONTACT SEAL ASSEMBLY IN GAS TURBINE ENGINE

The present invention relates to a non-contact seal assembly (400) for sealing a gap (11) between relatively rotatable components(13, 14) in a gas turbine engine. The non-contact seal assembly includes a primary seal (420) having a radially movable seal shoe (422), a mid¬ plate (440), an aft seconda...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	PASPULATI, Amit K, KADAU, Kai, CHEHAB, Abdullatif M
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CYLINDERS ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PISTONS SEALINGS STEAM ENGINES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The present invention relates to a non-contact seal assembly (400) for sealing a gap (11) between relatively rotatable components(13, 14) in a gas turbine engine. The non-contact seal assembly includes a primary seal (420) having a radially movable seal shoe (422), a mid¬ plate (440), an aft secondary seal (452) radially movable along with the seal shoe, a forward secondary seal (451) and a U-shaped seal carrier (410) for holding the components together using pins (460). The seal shoe includes a plurality of seal shoe segments (423). The aft secondary seal includes a plurality of aft secondary seal segments (453). Each aft secondary seal segment is attached to each seal shoe segment. Each aft secondary seal segment includes at least a notch (455) at outer radial side to receive the pin for accommodating radial movement of the seal shoe segment. La présente invention concerne un ensemble joint sans contact (400) destiné à sceller un espace (11) entre des composants relativement rotatifs (13, 14) dans un moteur à turbine à gaz. L'ensemble joint sans contact comprend un joint primaire (420) ayant un sabot de joint radialement mobile (422), une plaque médiane (440), un joint secondaire arrière (452) mobile radialement conjointement avec le sabot de joint, un joint secondaire avant (451) et un support d'étanchéité en forme de U (410) pour maintenir les composants ensemble à l'aide de broches (460). Le sabot de joint comprend une pluralité de segments de sabot de joint (423). Le joint secondaire arrière comprend une pluralité de segments de joints secondaires arrière (453). Chaque segment de joint secondaire arrière est fixé à chaque segment de sabot de joint. Chaque segment de joint secondaire arrière comprend au moins une encoche (455) au niveau d'un côté radial externe pour recevoir la broche afin d'accueillir un mouvement radial du segment de sabot de joint.