General Electric Company

Dresser, Inc.

Nuovo Pignone Spa

Nuovo Pignone Srl

Nuo Sheng

Benjamin Paul Lacy

Christopher Edward Wolfe

Wayne Charles Hasz

Vivek Venugopal Badami

Farshad Ghasripoor

Dennis Michael Gray

Surinder Singh Pabla

Vittorio Michelassi

Azam Mihir Thatte

Krishnamurthy Anand

Warren Arthur Nelson

Henry William Boger

Massimo Giannozzi

Iacopo Giovannetti

Roderick Mark Lusted

Daniel James Dorriety

Xuele Qi

Dennis William Cavanaugh

James Albert Stares

Thomas Henry Cunningham

Yogesh Kesrinath Potdar

Luc Stephane Leblanc

Adrian Gabriel Loghin

Paul Matthew Thomas

Nicole Barbara Piche

Vinod P Pareek

Sanghum Baik

Raymond Chupp

Lacopo Giovannetti

Warren Arthus Nelson

Dennis M Gray

Roderick Lusted

Adrian G Loghin

A seal system, for an apparatus that includes a rotatable portion with airfoils coupled thereto and a stationary portion with an inner surface, includes an abradable portion including at least one abradable layer of an abradable material formed over the inner surface. The seal system also includes an abrading portion disposed over at least a portion of a substrate of the airfoil. The abrading portion includes at least one abrading layer formed on at least a portion of the substrate and a plurality of abrasive particles embedded within the abrading layer. The plurality of abrasive particles includes at least one of substantially all of one of tantalum carbide (TaC), aluminum oxide (AlO), and ziconia (ZrO), cubic boron nitride (cBN) and AlOin predetermined ratios, cBN, AlOand ZrOin predetermined ratios, AlOand ZrOfused together in predetermined ratios, and TaC and AlOin predetermined ratios.

Seal systems for use in turbomachines and methods of fabricating the same

A sealing system for a centrifugal compressor includes a stator having a seal, a seal disposed in the seal housing and having an abradable portion along an inner circumference, a rotor having a plurality of rotor teeth configured to rotate within the inner circumference of the seal and configured to create rub grooves within the abradable portion, and a first spring disposed between the stator and the seal and configured to facilitate axial movement of the seal relative to the seal housing.

Abradable seal with axial offset

An apparatus includes a cage and a main plug disposed in the cage. The main plug is movable between a main plug closed position and a main plug open position. A seal assembly disposed on the main plug, the seal assembly having a seal that is configured to contact the cage when the main plug is in the main plug closed position, and configured to reduce contact with the cage when a pressure differential across the seal is reduced. The apparatus includes a pressure balancing assembly movable between a closed position, an overtravel position and an open position. The pressure balancing assembly is configured to balance the pressure differential across the seal when in the overtravel and open position.

Pressure balanced spring loaded overtravel sealing apparatus

Methods, systems and computer program products for assessing residual life of an airfoil, which would experience high cycle fatigue failure under at- or near-resonance vibration condition, are provided. The method includes receiving, at a processing system, at least one vibration response parameter associated with the airfoil. The method processes at least one cracked airfoil finite element model. Processing the cracked airfoil finite element model includes accessing the cracked airfoil finite element model, computing a modal stress intensity factor (SIF) of the cracked airfoil finite element model using fracture mechanics based finite element analysis, and computing a vibratory SIF based, at least in part, on the modal SIF and the at least one vibration response parameter. The method then computes a residual life indicator of the airfoil based, at least in part, on the vibratory SIF.

Methods and systems for assessing residual life of turbomachine airfoils

A method and composition are provided for coating honeycomb seals and, more specifically, to a method and slurry for applying an aluminide coating onto honeycomb seals. The method includes preparing a slurry of a powder containing a metallic aluminum alloy having a melting temperature higher than aluminum, an activator capable of forming a reactive halide vapor with the metallic aluminum, and a binder containing an organic polymer. The slurry is applied to surfaces of the honeycomb seal, which is then heated to remove or burn off the binder, vaporize and react the activator with the metallic aluminum to form the halide vapor, react the halide vapor at the substrate surfaces to deposit aluminum on the surfaces of the seal, and diffuse the deposited aluminum into the surfaces to form a diffusion aluminide coating.

Method for coating honeycomb seal using a slurry containing aluminum

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Schenectady, NY, United States of America

Nuo Sheng