Abstract:
A shrouded impeller (100) and a method (300, 400) of additively manufacturing the same are provided. In one example aspect, the shrouded impeller (100) includes a hub (110) and a shroud (112) spaced from the hub (110). The shrouded impeller (100) also includes a plurality of vanes (114) extending between and connecting the hub (110) and the shroud (112). The vanes (114) are spaced circumferentially apart from one another. Flow passages (116) are defined between adjacent vanes (114). In some implementations, the shrouded impeller (100) is additively manufactured. During printing, one or more support structures (160) are formed within and fill a portion of one or more of the flow passages (116) to support the unsupported walls of the shrouded impeller (100), e.g., the shroud (112). Further, the support structures (160) are removable from the shrouded impeller (100), e.g., after the shrouded impeller (100) has been printed.
Abstract:
A system of dense packaging of turbomachinery in a gas turbine engine by means of close-coupling of components and by the ability to rotate various engine components with respect to other engine components is disclosed. In addition, spool shaft rotational direction may be reversed to suit the application. In multiple engine configurations, the same ability to close-couple and rotate components and to reverse shaft rotational direction in order to rearrange the engine geometry package is used for packaging two or more gas turbine engines to achieve high power density. Dense-packing is possible because of a number of features of the basic engine. These features include: the use of compact centrifugal compressors and radial turbine assemblies; the close coupling of turbomachinery for a dense packaging; the ability to rotate certain key components so as to facilitate ducting and preferred placement of other components; the ability to control spool shaft rotational direction; and operation at high overall pressure ratios.
Abstract:
A turbo jet engine comprises a fan unit (10a) which combines a fan (11a), centrifugal compressor cells (11b), and turbine blades (11c). Air flowing through the centrifugal compressor cells (11b) is supplied to a peripheral combustor (12), and air flowing through the fan (11a) cools the air flowing through the compressor cells (11b) and bypasses the combustor (12). Turbine exhaust and bypass air are then ejected through a common nozzle (9).
Abstract:
L'objet principal de l'invention est une chambre de combustion (1) pour turbomachine (10), comportant un fond de chambre (16) et une pluralité de systèmes d'injection d'air et de carburant (21), répartis circonférentiellement autour d'un axe (T) de la chambre de combustion (1), la chambre de combustion (1) comportant, associé à chaque système d'injection (21), un dispositif de guidage (2) de flux d'air (29) comprenant au moins une paroi (3) montée sur le système d'injection (21) et se projetant vers l'amont, ladite au moins une paroi (3) formant obstacle à un écoulement circonférentiel d'air autour de l'axe (T), caractérisée en ce que ladite au moins une paroi (3) du dispositif de guidage (2) de flux d'air (29) présente une forme définissant sensiblement un quart de sphéroïde dont le volume intérieur (V) forme une écope de guidage du flux d'air (29) pour l'alimentation de la chambre de combustion (1).
Abstract:
A gas turbine engine includes a centrifugal compressor having an improved impeller structure. The impeller structure includes a near axial discharge configuration thus reducing the overall size of the envelop surrounding the compressor assembly. The impeller structure may have axial exit vanes.
Abstract:
The invention relates to a gas turbine engine that will find application in the mechanical engineering and in particular in the manufacturing of small-scale engines for vehicles and electricity generation. The gas turbine engine includes a compressor and a turbine mounted on a connecting shaft and also a combustion chamber. According to the invention the compressor/1/ and turbine/2/ are connected to one another through the connecting shaft, comprising a hollow shaft/3/, enclosing as an outer wall the combustion chamber/5/, while the compressor/1/ and turbine/2/ are mounted through bearings/8/ on a stationary axle/4/, located centrally along the axis of symmetry of the engine. The compressor/1/, the turbine/2/ and the hollow connecting shaft/3/ comprise the engine rotor. The inlet guide vanes/1.3/ and the diffuser/1.4/ of the compressor/1/, same as the guide vanes/2.3/ of the turbine/2/, are fixed rigidly to the stationary axle/4/. In configurations, behind the turbine/2/, also mounted through bearings/8/ on the stationary axle/4/, is a second, free power turbine/2.4/ at the rear part of which a tooted gear/2.5/ is formed, coupled to a gear wheel/11.1/ of an output shaft/11/ for transferring power to a power take-off. It is possible the compressor/1/ to be a dual-rotor type, comprising an inner/1.1/ and outer rotors/1.2/, same as the turbine/2/ - respectively an inner/2.1/ and an outer/2.2/ rotors, driven in opposite directions through gears/12/, positioned between them.
Abstract:
Eine Gasturbinenanlage (10) mit Abgasrückführung umfassteine Hauptgasturbine (11, 12, 13, 16) mit einem Hauptverdichter (11) und einer Hauptturbine (12), welche einen Hauptgenerator (14) antreiben, sowie eine Brennkammer (16), deren Ausgang mit dem Eingang der Hauptturbine (12) der Hauptgasturbine verbunden ist, eine Brennstoffzufuhr (18) aufweist und über die Hochdruckseite eines Rekuperators (15) Verbrennungsluft vom Ausgang des Hauptverdichters (11) der Hauptgasturbine erhält, wobei der Ausgang der Hauptturbine (12) und der Eingang des Hauptverdichters (11) der Hauptgasturbine zur Abgasrückführung über die Niederdruckseite des Rekuperators (15) und einen Kühler (17) verbunden sind, und wobei auf der Niederdruckseite des Rekuperators (15) eine Ladegruppe (36) mit einem Verdichter (23) und einer Turbine (24) angeordnet ist, welche Ladegruppe (36) über einen Lufteinlass (20) Luft ansaugt und mit dem Ausgang ihres Verdichters (23) an den Ausgang der Niederdruckseitedes Rekuperators (15) und mit dem Eingang ihrer Turbine (24) an eine Überschussgas-Entnahmeleitung (19) auf der Niederdruckseite des Rekuperators (15) angeschlossen ist. Bei gleichzeitig kompaktem Aufbau der Anlage ist eine effektive CO 2 -Abscheidung dadurch möglich, dass Mittel (26,..,32) zur Abscheidung von CO 2 vorgesehen sind, welche entweder aus den nach aussen abgegebenen Abgasen (19) oder aus dem rezirkulierten Teilstrom (43) CO 2 abscheiden.
Abstract:
[0043] A turbocharger, having an axial compressor wheel and an axial turbine wheel mounted on a first shaft supported by a housing, and a radial compressor wheel and a radial turbine wheel mounted on a second shaft, the second shaft concentrically extending around the first shaft and being supported by the housing. The housing defines a first duct extending axially from the exducer of the axial compressor to the inducer of the radial compressor, and a second duct extending axially from the exducer of the radial turbine to the inducer of the axial turbine. A plurality of controllable compressor guide vanes extend through the first duct, and a plurality of controllable turbine stator vanes extend through the second duct. The housing is provided with variable diffuser vanes at the exducer of the radial compressor, and with variable turbine vanes at the inducer of the radial turbine. The variable turbine vanes and the turbine stator vanes are controlled to accurately control the rotation rate of the radial and axial turbines. The compressor guide vanes are controiled to minimize surge and maximize choke flow rate.
Abstract:
A tip turbine engine assembly includes an integral engine outer case (8) located radially outward from a fan assembly (30). The integral outer case (8) includes a rear portion (124) and a forward portion (128) with an arcuate portion (130) that curves radially inwardly to form a compartment. An annular combustor is housed and mounted in the compartment (132). Fan inlet guide vanes (22) are integrally formed with the arcuate portion (130) to form the integral case portion. The rear portion, forward portion, and fan inlet guide vanes are integrally formed in a casting process.
Abstract:
A non-rotating compartment along an engine centerline of a tip turbine engine is defined between an inner support housing, an outer support housing and an aft housing. The non-rotating compartment provides a space that may be utilized for a multitude of engine accessories and components including an engine lubricating fluid system.