Abstract:
Methods and devices for cooling systems (100, 700) are provided that are in fluid communication with bleed air from a jet engine compressor. The cooling systems include: a first precooler (210) recieving bleed air from the jet engine compressor; a heat exchanger (730) downstream from the first precooler (210); a cooling system compressor (220) downstream from the first precooler (210), wherein the heat exchanger (730) and the cooling system compressor (220) are in separate flow paths from the first precooler (210); a cooling system precooler (230) downstream from the cooling system compressor (220); a cooling system turbine (240) with variable guide vanes - VGT - and downstream from the cooling system precooler (230); and a discharge conduit (245) downstream from the cooling system turbine (240) and the heat exchanger (730). A bypass line (290) can also be included that bypasses the cooling system turbine (240).
Abstract:
The invention relates to a valve (1), the opening and closing of the valve being achieved by the use of process-internal media taking into account different geometries of the working chambers and the use of thermodynamically different state variables.
Abstract:
The present invention relates to an exhaust-gas turbocharger for use in an internal combustion engine and to a method for assembling and/or setting an exhaust-gas turbocharger. According to the invention, the exhaust-gas turbocharger comprises a regulating mechanism and an actuator device for actuating the regulating mechanism, wherein the actuator device comprises a control rod with a first part and a second part. The second part of the control rod has a guide, which is designed in such a way that it at least partially surrounds the first part. Moreover, the second part has at least one hole, wherein the first part is connected to the second part by a welded or assembly joint, which is arranged in the at least one hole.
Abstract:
Die Erfindung betrifft hydraulische Maschine mit Turbinen oder Pumpturbine, mit einem Laufrad, das um eine vertikal stehende Rotationsachse drehbar gelagert ist und eine Vielzahl von Laufschaufeln aufweist; einer Einlaufspirale, die das Laufrad ringförmig umgreift und die auf ihrem inneren Umfangsring eine umlaufende Austrittsöffnung aufweist; einem Leit- und/oder Verschlussapparat zum Regeln der Einströmung in das Laufrad, und einem Saugkrümmer zum Führen des aus dem Laufrad ausströmenden Wassers. Der Saugkrümmer ist oberhalb des Laufrads angeordnet. Wenigstens kann eine Umgehungsleitung zum Umgehen des Leit- und/oder Verschlussapparats vorgesehen sein, welche die Einlaufspirale direkt mit dem Laufrad verbindet, wenn ein im Verlauf dieser Umgehungsleitung angeordnetes Umgehungsventil geöffnet ist. Weiterhin kann wenigstens eine Entleerungsleitung zum Entleeren des Laufrads vorgesehen sein, welche das Laufrad direkt mit einem Pumpensumpf verbindet, wenn ein im Verlauf dieser Entleerungsleitung angeordnetes Entleerungsventil geöffnet ist. Die Erfindung betrifft auch ein Verfahren zum Befüllen und Entleeren einer solchen Maschine, sowie deren bevorzugte Verwendung.
Abstract:
A valve assembly for use to regulate a flow of steam in a flowpath of a turbine. The valve assembly can be configured with a body 200 that circumscribes a rotor. The body is disposed upstream of the rotor blades. In one implementation, the body forms an annular ring with a plurality of arcuate segments202, 204, 206, each being configured to move independently of the other segments in the ring to change the size of an annular gap between the arcuate segments and the rotor. The size of the annular gap corresponds with flow parameters for working fluid that flows across the rotor and that exits the turbine for use in pre-heaters and like collateral equipment.
Abstract:
An apparatus (1) for sealing an internal environment of a turbomachine, comprises a first chamber (2) connectable in fluid communication with a high pressure environment (HP) of a turbomachine (100) so that a working fluid can flow from the high pressure environment (HP) to the first chamber (2); a second chamber (3) in fluid communication with a lubrication circuit ( 106) so that a lubricant can flow from the lubrication circuit (106) to the second chamber (3); the first (2) and second chambers (3) are arranged in fluid communication with each other so that the working fluid can flow from the first (2) to the second chamber (3); a return line (4) for the working fluid in fluid communication with the first chamber (2) and connectable in fluid communication with a low pressure environment (LP) of the turbomachine (100) so that the working fluid can flow from said first chamber (2) to said low pressure environment (LP); a pressure regulating device (5) along the return line (4) configured to provide a predetermined pressure drop.