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| Number | Title | Issue Date |
| 8016553 | Turbine vane with rim cavity seal A turbine rim cavity seal with a variable gap clearance control in a gas turbine engine. A stator vane includes an inner shroud with an inter-stage sealing housing extending inward and separating a front rim cavity from an aft rim cavity. Front and aft rotor disks a... | 09/13/2011 |
| 7909570 | Interturbine duct with integrated baffle and seal An integrated duct, baffle and knife edge seal arrangement employing the radially inner distal edge of the baffle for sealing the radially inner stator/rotor interface of an inter-stage cavity. ... | 03/22/2011 |
| 7708520 | Gas turbine engine with concave pocket with knife edge seal A gas turbine engine is provided with turbine sealing structures including knife edge seals which extend at an angle relative to an axial center line of the engine. Each knife edge seal is associated with a concave pocket defined between a radially inner surface and... | 05/04/2010 |
| 7704041 | Variable clearance positive pressure packing ring and carrier arrangement with coil type spring A packing ring assembly is provided and includes an arcuate carrier ring segment, an arcuate packing ring segment movable relative to the carrier ring segment, an attachment component disposed in association with the packing ring segment and in association with the ... | 04/27/2010 |
| 7597538 | Thermostructural turbomachine part that is circularly symmetrical about a longitudinal axis, the part including an annular wiper, and a method of manufacture In the method, a support is provided that presents a base for an annular wiper, and a wiper is built up that presents height that varies around its circumference, by forming a plurality of projecting portions by performing following successive steps: ... | 10/06/2009 |
| 7430802 | Labyrinth seal in a stationary gas turbine The invention relates to a segmented inner ring for holding guide blades. According to the invention, a lateral wall opposing the front side of the inner ring and pertaining to a shaft shoulder formed on the rotor shaft extends radially, and respectively one half of... | 10/07/2008 |
| 7425114 | Shaft seal for a transmission expander or compressor, and transmission expander or compressor having a shaft seal A shaft seal for a transmission expander or compressor having at least one rotor which rotates in a housing and is arranged in a floating manner on a shaft, the shaft seal having a seal arrangement with seal tips attached on the hub of the rotor. A stationary sealin... | 09/16/2008 |
| 7384235 | Variable clearance positive pressure packing ring and carrier arrangement with leaf springs A packing ring assembly is provided and includes an arcuate carrier ring segment having an aperture formed therethrough, an arcuate packing ring segment including an attachment component extending through the aperture of the carrier ring segment and movably associat... | 06/10/2008 |
| 7367776 | Turbine engine stator including shape memory alloy and clearance control method A turbine engine stator assembly in juxtaposition across a radial gap with a rotary blading assembly includes a radially movable shroud and a gap control member made of at least one shape memory alloy (SMA). The SMA is selected and preconditioned to deform pre-selec... | 05/06/2008 |
| 7363762 | Gas turbine engines seal assembly and methods of assembling the same A method of assembling a gas turbine engine includes providing a gas turbine engine including a compressor, a combustor downstream from the compressor, and a turbine coupled to the compressor, and coupling a seal assembly aft of the compressor such that air discharg... | 04/29/2008 |
| 7364402 | Turbine module for a gas turbine engine A turbine module for a gas turbine engine includes at least one turbine disk and a disk-shaped component mounted on the turbine disk upstream relative to the gas flow. The module can be assembled to the compressor of the engine, wherein the component is preassembled... | 04/29/2008 |
| 7344357 | Methods and apparatus for assembling a rotary machine A method for assembling at least one seal assembly to a turbine having a casing extending at least partially around a rotor is provided. The method includes coupling the seal assembly to the casing such that the seal assembly extends into a fluid flow passage define... | 03/18/2008 |
| 7341429 | Methods and apparatuses for cooling gas turbine engine rotor assemblies A method of manufacturing a gas turbine engine includes providing a turbine mid-frame, coupling a plurality of rotor blades to a rotor disk, the rotor disk is coupled axially aft from the turbine mid-frame such that a cavity is defined between the rotor disk and the... | 03/11/2008 |
| 7338255 | Turbo-type fluid machine and a stepped seal apparatus to be used therein A turbo-type fluid machine comprises a mouth ring part provided between a shroud of an impeller and a pump casing and having a seal function. The mouth ring part comprises an impeller ring on a side of the shroud of the impeller and a casing ring provided on a side ... | 03/04/2008 |
| 7334983 | Integrated bladed fluid seal Disclosed are various embodiments of a gas turbine blade to vane interface seal for restricting leakage of cooling air and improving the apportioning of the cooling air to the seal. Accordingly, a turbine rotor contains a first and a second stage of radially extendi... | 02/26/2008 |
| 7287956 | Removable abradable seal carriers for sealing between rotary and stationary turbine components The turbine includes a diaphragm having a seal carrier mounted in opposition to seal teeth carried by the rotary component. The seal carrier includes a seal face having a coating of abradable material enabling the rotary component to abrade the material from the sea... | 10/30/2007 |
| 7264442 | Seal structure A combustion chamber inner casing (24) has a flange (28) on its downstream end. A retaining seal ring (40) is bolted to the flange (28) and traps a flanged seal ring (46) against the flange (28) in a manner that allows the s... | 09/04/2007 |
| 7252474 | Sealing arrangement in a compressor A sealing arrangement for a compressor that compresses a gaseous mixture of air and fuel includes a pressurized air supply duct for supplying pressurized air into a leakage pathway defined between a compressor wheel and a housing of the compressor, which leakage pat... | 08/07/2007 |
| 7241109 | Seal system A seal system comprises a rotor and a stator. First and second cavities are defined between the rotor and the stator. A plurality of seals for inhibiting a flow of gas through the cavities are provided. Relative motion between the rotor and the stator can cause a fl... | 07/10/2007 |
| 7234918 | Gap control system for turbine engines Embodiments of the invention relate to a system and method for controlling the size of gaps in a turbine engine. In many instances, it is desirable to minimize the size of the gaps between neighboring rotating and stationary components in a turbine engine, such as b... | 06/26/2007 |
| 7186074 | Axial flow stream turbines A drum-type rotor carries an annular row of moving blades having root portions held within a slot in the periphery of the rotor. A turbine casing surrounds the rotor and carries a static blade assembly with an annular row of static blades which, together with the an... | 03/06/2007 |
| 7175388 | Integrated labyrinth and carbon seal An integrated double seal assembly includes a carbon seal ring and at least one annular labyrinth seal fin. The seal provides a compact solution for sealing a rotating shaft. ... | 02/13/2007 |
| 7121791 | Main gas duct internal seal of a high-pressure turbine A high-pressure turbine of a gas-turbine engine provided with a turbine disk (1) carrying rotor blades (2) and with stator blades (3), and with a lateral wheel cavity (5) being formed between the turbine disk (1) and the stator rin... | 10/17/2006 |
| 7097423 | Endface gap sealing for steam turbine diaphragm interstage packing seals and methods of retrofitting Spline seals are disposed in circumferentially registering slots of adjacent arcuate packing seal segments disposed in grooves on inner hooks of a steam turbine diaphragm assembly. The spline seals extend in a gap between the endfaces of the segments and minimize or... | 08/29/2006 |
| 7082962 | Seal support system for maintaining barrier fluid pressure within a mechanical seal An intelligent seal support management system includes a device for automatically compensating for increased heat or decreased heat in a vessel. ... | 08/01/2006 |
| 7059821 | Method and apparatus to facilitate sealing within turbines A method to facilitate sealing between a rotary component and a stationary component is provided. The rotary component includes at least one bucket secured thereon, the bucket having a flow admission side and a flow exit side. The method includes coupling a spill st... | 06/13/2006 |
| 7056088 | Steam turbine rotor temperature control at oil deflector A turbine comprises an oil deflector including at least one set of seal rings, and a shaft including an annular step. The step includes a circumferential surface in proximity to the seal rings of the oil deflector and a side surface extending radially from a center ... | 06/06/2006 |
| 7052017 | Rotary machine with seal The so-called comb-type labyrinth sealing device (S1) is disposed in a gap between a rotor blade (2), i.e. a rotating member, and a labyrinth packing (9), i.e. a stationary member. The sealing device (S1) has a plurality of sealing fins (... | 05/30/2006 |
| 7048496 | Turbine cooling, purge, and sealing system A rotor system for a gas turbine engine is provided having an outer rotor which includes an annular outer spool that comprises at least one ring portion of increased thickness with respect to the remainder of the outer spool, attached to a relatively thinner, axiall... | 05/23/2006 |
| 7048497 | Gas turbine stator A gas turbine stator including at least a first injector providing a passage for a main cooling air stream into a pressurized chamber. An evacuation mechanism discharges air coming from an internal labyrinth gland of a first cavity towards a lower-pressure second ca... | 05/23/2006 |
| 7044710 | Gas turbine arrangement A gas turbine arrangement includes a rotor, a hot-gas passage, through which a hot-gas stream (12) flows while the gas turbine is operating, at least one first row of turbine blades or vanes (1), which have an airfoil(3) with a suction side (... | 05/16/2006 |
| 7040861 | Method and apparatus for reducing self sealing flow in combined-cycle steam turbines A method and apparatus for reducing self sealing flow in a combined cycle double flow steam turbine, the method and apparatus include providing a brush seal in a packing ring of a packing ring assembly at either end defining the double flow steam turbine. ... | 05/09/2006 |
| 7004475 | Flow dam design for labyrinth seals to promote rotor stability A method and apparatus for reducing steam swirl in a steam turbine. A plurality of seal segments (14) are circumferentially juxtaposed to form a seal ring (12) encircling the turbine shaft (10), each seal segment (14) supporting a plurali... | 02/28/2006 |
| 6994519 | Apparatus and methods for coupling axially aligned turbine rotors The coupling between discrete axially aligned first and second turbine shafts includes a flange on one end of one shaft and a rotor wheel on the other shaft. Holes in axial alignment with one another through the flange and rotor wheel receive fastening elements secu... | 02/07/2006 |
| 6923005 | System to feed cooling air into a gas turbine rotor A system to feed cooling air to a gas turbine, wherein the cooling air is taken from a high-pressure source, inside the gas turgine, and is conveyed to radial accelerators (129, which give rise to the tangential acceleration of the air in the direction of the... | 08/02/2005 |
| 6916151 | Ventilation device for a high pressure turbine rotor of a turbomachine A ventilation device for a high pressure turbine rotor in a turbomachine, the turbine comprising upstream and downstream turbine disks fitted with blades, the device comprising a cooling circuit being supplied by a cooling airflow D taken from the back of the combus... | 07/12/2005 |
| 6910856 | Run-in coating for axial-flow compressor of gas turbine engines and method of using and making same Metal wire bundles are combined into brushes as a run-in coating for the axial-flow compressor stage of a gas turbine engine. The metal wire bundles are inserted into the basic material or are combined into brush segments that are inserted into corresponding recesse... | 06/28/2005 |
| 6899520 | Methods and apparatus to reduce seal rubbing within gas turbine engines A method facilitates assembling a seal assembly for a gas turbine engine rotor assembly. The method comprises coupling a disk retainer to a first stage disk, and coupling an interstage seal assembly including an outer shell within the rotor assembly such that a down... | 05/31/2005 |
| 6884023 | Integral swirl knife edge injection assembly The present invention relates to a system for delivering cooling air to a seal arrangement in a turbine stage of a gas turbine engine. The system comprises at least one vane having a passageway extending from an outer platform of the at least one vane to an inner pl... | 04/26/2005 |
| 6857847 | Simplified support device for nozzles of a gas turbine stage A simplified support device (110) for nozzles (112) of a gas turbine stage, of the type in which the support device (110) is interposed in a rotor of the gas turbine, between an upstream blading disc (122) and a downstream blading disc ( | 02/22/2005 |
