Abstract:
The present application provides a method of evaluating valve (270,280) tightness in a turbine (100) by a data acquisition system. The method may include the steps of receiving a number of operating parameters from a number of sensors (380), wherein the operating parameters may include rotor acceleration and rotor speed, comparing the rotor acceleration and the rotor speed to predetermined values, and altering one or more of the operating parameters and/or initiating repair procedures if the rotor acceleration and/or the rotor speed is increasing and/or exceeds predetermined values.
Abstract:
A method (10) for determining a condition of a second component of an engine is disclosed wherein the engine includes at least a first component and the second component. The method (10) includes determining (12) a concentration value of a chemical species in an effluent obtained from washing at least a portion of the first component of the engine, inputting (14) the concentration value of the chemical species in a condition assessment model to update the condition assessment model, and estimating (16) the condition of the second component based on an output of the updated condition assessment model. The effluent used herein includes a wash fluid and the chemical species. The second component is different from the first component and the condition assessment model is a representative of a condition of the second component of the engine.
Abstract:
In one embodiment, one or more tangible, non-transitory computer-readable media stores instructions. The instructions, when executed by one or more processors, are configured to receive engine rotation timing event signals for one or more components of the engine and vibration signals indicative of movement of the one or more components, to synchronize the engine rotation timing event signals and the vibration signals to generate synchronized vibration signals, to determine whether a fault exists by comparing the synchronized vibration signals to vibration signatures, and to generate a graphical user interface (GUI) that depicts the synchronized vibration signals at angular positions of the one or more components in relation to time as the one or more components rotate during operation of the engine.
Abstract:
Pitch system (1) comprising at least one pitch motor drive (3) connected an electrical network (5). Each pitch motor drive (3) is connected to a power bank, and the pitch system comprises a test module adapted to be activated in a test position. The test module comprises a brake module (8) each connected to a pitch motor drive (3), and each brake module (8) is adapted to load a pitch motor drive (3) with a certain load Rb. Hereby a voltage drop takes place over the power bank (6). The power bank (6) is separated into a number of power blocks (9) and the voltage drop ∆V of each power block (9) is adapted to be registered by the test module when the brake module (8) is activated.
Abstract:
The rotating machine (10), comprises a shaft (26) and at least one device (28) for measuring at least the accelerations of the shaft (26) along pitch (X1), yaw (Y1) and roll (Z1) axes of the shaft (26) or the angular position of the shaft (26) around the pitch (X1), yaw (Y1) and roll (Z1) axes, the or each device (28) being mounted on the shaft (26).
Abstract:
La présente invention concerne un procédé d'estimation du caractère normal ou non d'une valeur (y exec ) mesurée par un capteur (20) d'un paramètre physique d'un dispositif (1 ) pour une valeur (x exec ) d'un paramètre de fonctionnement dudit dispositif (1 ), caractérisé en ce qu'il comprend la mise en œuvre d'étapes de : (a) Calcul en fonction d'un modèle de régression associé à ladite pluralité de couples (x i ;y i ) iE((1,n)) d'une valeur estimée (ŷ exec ) du paramètre physique; (b) Calcul d'un résidu (res exec ) associé; (c) Calcul en fonction d'un modèle de variance associé à ladite pluralité de couples (x i ;y i ) iE((1,n)) d'une valeur estimée (var exec ) d'une variance du paramètre physique; (d) Calcul d'un score d'anomalie (Z score ) de la valeur mesurée {y exec ) en fonction du résidu {res exec ), de la valeur estimée {var exec ) de la variance, et d'une valeur moyenne de résidu ( mean ) pour ladite pluralité de couples(x i ;y i ) iE((1,n)) ; (e) Comparaison du score d'anomalie (Z score ) de la valeur mesurée (y exec ) avec un seuil (σ) en nombre d'écart type; (f) si le score d'anomalie (Z score ) est supérieur audit seuil (σ), signalement de la mesure comme anormale sur des moyens d'interface (33).
Abstract:
A method of monitoring for combustion anomalies in a gas turbomachine includes sensing an exhaust gas temperature at each of a plurality of temperature sensors arranged in an exhaust system of the gas turbomachine, comparing the exhaust gas temperature at each of the plurality of temperature sensors with a mean exhaust gas temperature, determining whether the exhaust gas temperature at one or more of the plurality of temperature sensors deviates from the mean exhaust temperature by a predetermined threshold value, and identifying an instantaneous combustion anomaly at one or more of the temperature sensors sensing a temperature deviating from the mean exhaust temperature by more than the predetermined threshold value.
Abstract:
Performance of a gas turbine engine is monitored by computing a mass flow rate through the engine. Acoustic time-of-flight measurements are taken between acoustic transmitters and receivers in the flow path of the engine. The measurements are processed to determine average speeds of sound and gas flow velocities along those lines-of-sound. A volumetric flow rate in the flow path is computed using the gas flow velocities together with a representation of the flow path geometry. A gas density in the flow path is computed using the speeds of sound and a measured static pressure. The mass flow rate is calculated from the gas density and the volumetric flow rate.
Abstract:
A pressure probe includes a non-deflecting airfoil, a sensing feature, and an interior passage. The non-deflecting airfoil is made of a metal and configured for use in a gas turbine engine. The airfoil extends from a base to a tapered portion, and thence to a linear portion, along a primary axis. The sensing feature is formed monolithically with the airfoil, as by additive manufacturing. The interior passage is operatively connected to the sensing feature and passes through both the airfoil and the base.
Abstract:
A combination probe is positioned at a location in a stationary portion of a turbo machine that defines a gas flow path and is configured to detect a moving portion of the turbo machine within the gas flow path. The combination probe includes a tip timing sensor configured to sense when the moving portion is located proximate to the location of the probe, and an optical component configured to have a field of view that includes the moving portion when the moving portion is located proximate to the location of the probe. There is also an image capture device coupled to the optical component to capture an image of the field of view. The image can be used to determine the particular blade tip location within the field of view which is also the blade tip location sensed by the tip timing sensor.