Abstract:
A turbine engine includes at least a compressor section and a turbine section, each having at least a first and second portion. A ratio of turbine section second portion stages to compressor section second portion stages is less than or equal to 1.
Abstract:
Exhaust diffuser and method for manufacturing an exhaust diffuser It is described an exhaust diffuser for a torque-generating turbine, in particular a torque-generating gas turbine, the exhaust diffuser comprising an inner member having an outer surface and an outer member having an inner surface, the inner member and the outer member forming an annular channel, a first supporting strut (4) connecting the inner member and the outer member, and a second supporting strut (5) connecting the inner member and the outer member, the first supporting strut and the second supporting strut being arrange such as to form a twin-strut with an in flow-direction narrowing channel (6) thereinbetween. Furthermore, a method for manufacturing an exhaust diffuser is described.
Abstract:
It is described an exhaust diffuser for a torque-generating turbine, in particular a torque-generating gas turbine, the exhaust diffuser comprising an inner member having an outer surface and an outer member having an inner surface, the inner member and the outer member forming an annular channel, at least a first supporting strut connecting the inner member and the outer member, the supporting strut extending essentially radially from the inner surface to the outer surface, the supporting strut comprising a middle section having a first airfoil and an outer section having a second airfoil, and the second airfoil having a higher angle of incidence than the first airfoil. Furthermore, it is described a method for manufacturing an exhaust diffuser.
Abstract:
A vane assembly (21) for an axial flow turbine engine provides a plurality of nozzles (22) arranged symmetrically around a turbine axis formed by an inner hub (26), an outer casing (27) and vanes (23) intermediate pairs of adjacent nozzles. The nozzles have a cross - section normal to the turbine axis that changes smoothly with the position of the cross - section along the turbine axis from a first shape having a minimum radius of curvature of a first value that is no less than a limit L, providing the cross - section with no highly curved corners, to a second shape having a minimum radius of curvature of a second value less than the first value, providing corners. This allows the secondary flow structure to be designed to improve aerodynamic loss and cooling performance.
Abstract:
The present invention provides an airfoil for a third stage blade (138) having an external surface with first and second sides. The external surface extends spanwise between a hub (352) and a tip (354) and streamwise between a leading edge (140) and a trailing edge (142) of the airfoil. The external surface includes a contour substantially defined by Table 1 as listed in the s specification.
Abstract:
L'invention concerne un procédé de stockage et de production d'énergie par air comprimé comportant les étapes suivantes: - une compression de l'air par des compresseurs étagés au cours de laquelle le refroidissement de l'air après au moins une étape de compression est effectué à l'aide d'un d'échange avec un fluide de transfert thermique, - stockage de l'air comprimé et du fluide de transfert thermique chaud après échange lors des compressions, - détentes étagées de l'air par des turbines de production d'énergie, au cours desquelles le réchauffage de l'air est effectué après au moins une étape de détente par ledit fluide de transfert chaud soutiré dudit stockage. Selon l'invention, après réchauffage de l'air en détente et avant d'être recyclé vers l'étape de compression, le fluide de transfert est refroidi par une boucle de récupération supplémentaire d'énergie comportant une pompe, un échangeur et une turbine et un fluide de transfert supplémentaire.
Abstract:
Die Erfindung betrifft eine Turbine, insbesondere eine Dampfturbine, umfassend ein Gehäuse (12) mit einem Einlass (14) für ein Arbeitsmedium, einem Auslass (16) für das Arbeitsmedium und einem axial dazwischen angeordneten Strömungsbereich (18), und einen in Axialrichtung (A) orientierten, drehbar gelagerten Läufer (20) mit einer Beschaufelung (22-1, 22-2) im Strömungsbereich (18), wobei die Turbine (10) auf der dem Strömungsbereich (18) abgewandten axialen Seite des Einlasses (14) wenigstens eine von einem Teil des eingelassenen Arbeitsmediums durchströmbare Druckausgleichsstruktur (30) aufweist, von welcher aus wenigstens eine Ausgleichsleitung (50-1, 50-2) wegführt und in den Strömungsbereich (18) einmündet (52-1, 52-2). Erfindungsgemäß ist die Ausgleichsleitung (50-1, 50-2) mit einer Ventileinrichtung (54-1) ausgestattet, die eine Durchströmung der Ausgleichsleitung (50-1, 50-2) in Richtung vom Strömungsbereich (18) zur Druckausgleichstruktur (30) verhindert.
Abstract:
MCrAlX-Schichten werden nach dem Stand der Technik eingesetzt, um Turbinenschaufeln vor Oxidation oder Korrosion zu schützen. Erfindungsgemäß werden die MCrAlX-Schichten bei gegenüber der Einsatztemperatur erhöhten Temperaturen behandelt, so dass das Oxidation- und Korrosionsverhalten verbessert ist.
Abstract:
A method of assembling a gas turbine engine comprising the steps of providing a casing having an insertion aperture in its outer surface. A guide vane is inserted through the insertion aperture. The guide vane is secured to the outer surface of the casing such that the guide vane can be serviced from an outer part of the casing. A corresponding gas turbine engine is also provided.