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Hydrodynamic and experimental characterization of pumps as turbines
Caracterización hidrodinámica y experimental de bombas como turbinas
DOI:
https://doi.org/10.15446/dyna.v90n226.106010Palabras clave:
pump as turbine; vibration; spectral analysis; monitoring (en)bombas como turbina; vibración; análisis espectral, monitoreo (es)
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To estimate the performance, efficacy, modes of operation, hydrodynamic instabilities, and methodologies for harnessing energy from the pump as turbine (PAT), it is necessary to characterize these hydraulic turbomachines in all their modes of operation using an experimental test rig that simulates actual operating conditions. In this process, the characteristic curve of four quadrants of a turbomachine is constructed, especially its five modes: pump mode, brake pump mode, turbine mode, brake turbine mode, and reverse pump mode. In addition, with dynamic sensors installed in the pump volute, it is possible to know the hydrodynamic phenomena within PAT, finding its average behavior and frequency response, which is a tool for diagnosing the machine’s condition.
Para estimar los modos de operación, puntos de mejor eficiencia, inestabilidades hidrodinámicas y metodologías de aprovechamiento de la energía de la bomba como turbina (PAT), es necesario caracterizar la hidrodinámica de estas turbomáquinas hidráulicas en todos sus modos de operación utilizando un banco experimental que simule las condiciones reales de funcionamiento. En este proceso se lleva a cabo la construcción de la curva característica de los cuatro cuadrantes de una turbomáquina, repasando sus cinco modos: bomba, bomba freno, turbina, turbina freno y bomba inversa. Además, con sensores dinámicos instalados en la voluta de la bomba, es posible conocer el comportamiento hidrodinámico dentro de la PAT, encontrando su comportamiento promedio y respuesta en frecuencia, lo cual es una herramienta para diagnosticar el estado de la máquina. Este diagnóstico del estado de la máquina permite realizar la caracterización hidrodinámica de un PAT.
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1. Francisco Javier Botero-Herrera, Daniel Felipe Tobón-Espinosa, Ricardo Moreno-Sánchez. (2024). Everything you need to know before working with a pump as a turbine. Revista Facultad de Ingeniería Universidad de Antioquia, https://doi.org/10.17533/udea.redin.20240410.
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