Abstract:
L'invention concerne un procédé de surveillance (1) d'une séquence d'allumage d'un moteur, notamment de turbomachine, comprenant les étapes suivantes: (i)détermination(30) d'une durée d'allumage du moteur pour un paramètre de démarrage déterminé, (ii)comparaison(50) de la durée d'allumage du moteur ainsi déterminée à une durée d'allumage de référence attendue pour un moteur de référence et pour ce para mètre de démarrage, (iii)déduction (60) d'un indicateur de la mise en fonctionnement du moteur, (iv)répétition des étapes (i) à (iii) pour ce paramètre de démarrage, pour chaque mise en fonctionnement du moteur de la séquence, et (v)en fonction de l'évolution de l'indicateur, génération (90) d'une alerte de dégradation de la séquence d'allumage du moteur.
Abstract:
An on line optical inspection and monitoring system is externally mounted to existing man way service access within the combustor housing. A replacement man way cover having an optical window is mounted to the combustor housing. One or more optical cameras are oriented so that the camera field of view (FOV) is directed through the man way cover optical window. The camera FOV is moved to plural positions within the combustion section, such as under control of an automated motion control system, and images are captured. Multiple images are combined to form a composite image, which may include an image of an entire transition within the combustion section. Visual images and/or infrared (IR) thermal images may be captured. Thermal image information is correlated with component temperature. Image information is utilized to determine vibration characteristics of the imaged components
Abstract:
A system and computer-implemented method for monitoring and diagnosing anomalies in a wheel-space of a gas turbine is implemented using a computer device coupled to a user interface and a memory device and includes storing a plurality rule sets in the memory device, the rule sets relative to the wheel-space, the rule sets including at least one rule expressed as a relational expression of a real-time data output relative to a real-time data input, the relational expression being specific to a temperature of the wheel-space. The method also includes receiving real-time and historical data inputs from a condition monitoring system associated with the gas turbine, the data inputs relating to sources providing heat to the wheel-space and estimating a wheel-space temperature value using the inputs relating to a temperature of the wheel-space.
Abstract:
A turbine engine system includes a turbine engine shaft, a first rotor, a second rotor and an engine monitoring system. The shaft includes a shaft bore formed by a shaft wall. The shaft bore extends along an axial centerline through the shaft between a first shaft end and a second shaft end. The first rotor is connected to the shaft at the first shaft end, and the second rotor is connected to the shaft at the second shaft end. The engine monitoring system includes a sensor connected to the second rotor, a transmitter arranged at the first shaft end, and a plurality of conduit assemblies. Each of the conduit assemblies includes a conduit that extends axially within the shaft bore and is connected to the shaft wall. A first one of the conduit assemblies also includes a wire that extends through a respective conduit and connects the sensor and the transmitter.
Abstract:
According to a first aspect, the invention relates to a method for monitoring a lubrication system (1). The method comprises the steps of: providing at least one temporal evolution of at least one input data (210); providing a model (310) of said lubrication system (1) comprising parameters; generating diagnostic output data (220) of said lubrication system (1). The step of generating diagnostic output data (220) of the lubrication system (1) comprises the following steps: generating a temporal evolution of a residual (200) from said at least one temporal evolution of said at least one input data (210) and from said model (310); generating said diagnostic output data (220) by using a decision method (140) applied to said residual (200) and accounting for said temporal evolution of said residual. The method is characterized in that the model (310) includes a unique gulping effect for any flight conditions of the aircraft.
Abstract:
L'invention concerne un dispositif d'obturation comportant un bouchon (1) destiné à être placé sur un orifice fileté (2) d'un carter (3), ou à en être enlevé, respectivement par vissage et dévissage, le bouchon comprenant un corps central (4) portant un filetage (5), et des moyens de verrouillage et de déverrouillage s'opposant au dévissage spontané du bouchon, activés automatiquement par la rotation du bouchon (1) et sa progression correspondante dans la direction de vissage suivant un axe longitudinal (X). Les moyens de verrouillage et de déverrouillage comprennent deux organes d'accouplement libérable (7, 8), dont un premier organe (7) est accouplé en rotation avec le corps central (4) par l'intermédiaire d'une jupe de protection (10), et un second organe (8) est immobilisable en rotation par rapport au carter (3) lors du vissage.
Abstract:
The present invention relates to a method of detecting a predetermined condition in a gas turbine (10) and to a failure detection system for a gas turbine (10). The invention analyses instantaneous temperature readings from different locations (42, 32) in or outside/downstream a combustion system (22) of the gas turbine (10) by calculating the variance (130) for each measurement location (42, 32) during a predetermined time period. The variance of one measurement location is selected and than compared with a threshold that is based on at least two of the other variances of the other measurement locations (140, 150). If the said one selected variance goes above the threshold the occurrence of the predetermined condition is detected (170, 180).
Abstract:
In one form a maintenance device includes a flexible member with an inspection end sized to be inserted through an inspection port of a workpiece such as a gas turbine engine or a blade of a gas turbine engine. The maintenance device includes a directed energy member that in one form is configured to produce a double pulse laser with an interval time between a first one of the pulses and a second one of the pulses greater than the time of either the first one of the pulses or the second one of the pulses. The first one of the pulses is sufficiently powerful to produce a quantity of debris upon irradiation of the workpiece. The debris produced from the first one of the pulses can be evaporated by the second one of the pulses to eliminate and/or reduce a recast layer on the workpiece.
Abstract:
A gas turbine plant for the production of electric energy comprising a turbogas unit (2, 3, 5, 6) and a temperature monitoring system (18), configured to detect operative temperatures in a plurality of locations of rotating parts (2, 7, 8, 12) of the turbogas unit (2, 3, 5, 6). The temperature monitoring system (18) has a plurality of temperature sensors (20, 21) arranged on the rotating parts (2, 7, 8, 12) of the turbogas unit (2, 3, 5, 6). The rotating parts (2, 7, 8, 12) comprise a shaft (2) having a plurality of rotor discs (7, 8) clamped by a tie rod (12). At least some of the temperature sensors (20, 21) are housed in the rotor cavities (14) defined between the adjacent rotor discs (7, 8) and the tie rod (12).