摘要:
Ensemble pour turbine (22) de turbomachine, comprenant un carter (32) et un conduit annulaire (34) entourant le carter, raccordable à des moyens d'alimentation en air de refroidissement, et présentant une paroi annulaire radialement interne (36) pourvue d'orifices (40) agencés en regard du carter pour le refroidir par impact de jets d'air de refroidissement. Le carter présente une pluralité de rainures axiales (42) comprenant des premières rainures (42A) et des secondes rainures (42B) disposées en alternance, et les orifices se répartissent en une pluralité de rangées annulaires dans lesquelles tout couple de rangées annulaires consécutives est tel que les orifices (40A) de l'une des rangées annulaires du couple sont centrés par rapport aux premières rainures (42A) tandis que les orifices (40B) de l'autre rangée annulaire du couple sont centrés par rapport aux secondes rainures (42B).
摘要:
Measurement devices and methods for evaluating clearances between adjacent components in turbomachines are provided. A measurement device may include a tool and a controller. The tool and controller may determine the clearance by measuring the distance between the adjacent components. The controller may compare the clearance to a predetermined engineering clearance limit and/or a previously measured clearance. A method may include measuring the clearance with a device which includes a controller. The method may further include comparing the clearance in the controller to a predetermined engineering clearance limit and/or a previously measured clearance.
摘要:
Die Erfindung betrifft ein Einsatzelement (14) zur Befestigung an einem Ringsegmentkörper (30) einer Turbine (11) einer Gasturbine (10). Der Ringsegmentkörper (30) weist dabei an einer Heißgasseite (32) eine Aussparung (23) auf. Das Einsatzelement (14) ist zur Abdeckung der Aussparung (23) ausgebildet und weist dazu eine Abdeckplatte (29) mit einer konkav geformten Vorderseite (15) und einer Rückseite (16) sowie zumindest einen an der Rückseite (16) angeordneten Fuß (17) zur Positionierung an dem Ringsegmentkörper (30) auf. Zudem werden ein Ringsegment (13) mit dem Einsatzelement (14), eine Gasturbine (10) mit dem Einsatzelement (14) sowie ein Montageverfahren zur Montage des Einsatzelements (14) beansprucht.
摘要:
The invention relates to a fluid flow engine (9), in particular compressor or turbine of a gas turbine engine (10), having a stationary engine casing (38) and a rotor assembly (39) rotatable supported in the engine casing (38), the rotor assembly (39) comprising at least one circumferentially extending rotor blade row (40) with a plurality of radially extending unshrouded rotor blades (41), an inner surface (42) of the engine casing (38) comprising at least one circumferentially extending slot (43) arranged radially outside of the rotor blade row (40), wherein a gap (44) is provided between tips (45) of the rotor blades (41) and a base (46) of said slot (43), whereby the depth (d) of said slot (43) is less than the gap height of the gap (44).
摘要:
An aircraft jet propulsion system may comprise a thermoelectric cooler array coupled to a portion thereof, wherein the TEC array converts electrical energy to heat energy to create a temperature gradient and cools a turbine case using the temperature difference of the TEC array. The system may include a controller configured to control an input power provided to each TEC of the array of TECs, such that the array of TECs facilitates controlled cooling of the aircraft jet propulsion system in response to the input power provided to each TEC of the array of TECs. The TEC array may be powered by an alternator or by a thermoelectric generator.
摘要:
Turbine blade tip clearance is measured in a fully assembled turbine casing by mounting a non-contact displacement probe or sensor on a turbine blade that generates data indicative of sensor distance from the turbine casing that circumferentially surrounds the blade. The sensor is mounted on the blade with a sensor fixture, which includes a clamping mechanism and a sensor retention mechanism that retains and calibrates the sensor by selective movement of the sensor relative to the retention mechanism. Variations in sensor distance data are recorded when the turbine is operated in turning gear mode. Blade rotational position data are collected by a rotational position sensor. A data processing system correlates the distance and rotational position data with localized blade tip gap at angular positions about the turbine casing circumference. This method and apparatus facilitate assessment of turbine casing deformation impact on blade tip clearance and rotor/casing alignment.
摘要:
The invention concerns a cover (1) of a centrifugal compressor intended to be rigidly connected to a turbomachine housing (13, 15), which comprises a plurality of ports (16). The cover (1), which further comprises means for fastening same to the housing, is characterised in that a portion of said fastening means (20) is located upstream relative to the ports (16) and can be accessed by a fastening tool (22) through at least one of said ports (16) of the cover (1). The invention also concerns the turbomachine using this cover to form a sealed space (17), in particular with a view to collecting air.
摘要:
A method of repairing a turbine blade (1) having a radially extending outer wall (18) defining an internal cavity width and a blade tip (12). The method comprises removing at least a portion of the blade tip to form a repair surface (46) and providing a tip cap (48) having a radially outer side (50) with an outer width (95) that may be less than the internal cavity width (44), and having a radially inner side with an inner width (93) that is substantially equal to or greater than the internal cavity width (44). The tip cap is positioned at the repair surface, and the tip cap is welded to the repair surface using a ductile welding material. A cap peripheral portion (56) is formed by build-up welding around the tip cap, and a squealer portion (62) is formed by build-up welding on the cap peripheral portion.