Palabras clave
análisis espectral
fenómenos subsincrónicos
surge
rotating stall
Cómo citar
Resumen
Objetivo: identificar y caracterizar fenómenos hidrodinámicos subsincrónicos en una bomba centrífuga de baja velocidad específica, tomando como referencia su curva característica de cuatro cuadrantes. Materiales: la bomba objeto de estudio se trató de una ITT Goulds de 1,5 HP, la cual fue instrumentada con sensores de presión, un acelerómetro, un sensor de torque y un tacómetro. La medición de flujo se hizo con un medidor de flujo ultrasonido. Métodos: análisis en el dominio del tiempo y de la frecuencia, en conjunto con análisis de fase, fueron usados para caracterizar componentes espectrales asociados a fenómenos hidrodinámicos como el rotating stall y el surge. Resultados y discusión: en esta investigación se propuso un método alternativo para el análisis de fase utilizando las señales de presión sin filtrar. En lo relacionado con los fenómenos hidrodinámicos, la evidencia recogida sugiere la existencia de rotating stall en varios puntos de la curva de cuatro cuadrantes, y, en el tercer cuadrante, la coexistencia de rotating stall y surge. Conclusiones: los resultados del método propuesto para el análisis de fase fueron coherentes con los del método basado en la correlación cruzada. La instrumentación y los métodos considerados en la investigación permitieron recoger evidencias para la identificación de algunos fenómenos subsincrónicos.
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Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
Derechos de autor 2021 Hernan Dario Bolaños, Msc, Francisco Botero, PhD