Repotenciación y recalibración del banco de pruebas de sistemas de bombeo (serie y paralelo) del laboratorio de turbomáquinas de la Facultad de Mecánica de la ESPOCH

Abstract

The purpose of this technical work is to repower and recalibrate the pumping systems test bench (series and parallel) of the turbomachinery laboratory of the Faculty of Mechanics of ESPOCH. To put the test bench into operation, the damaged elements, the elements with damages, were determined; pipe supports were unwelded; the bench was unpainted; Several elements were found to be dirty, such as: reservoir container, interior of the pipes, it was verified that the electronic elements were in good condition. For the replacement of the damaged elements, it was verified that they were well selected, detecting that the 40 LPM rotameter was not the one indicated to measure the flow when the pumps worked in parallel, for which it was replaced by a 100 LPM rotameter. The mechanical drawing of the test bench was generated in SolidWorks; Load points were determined based on the flow, to graph the characteristic curves of the pump and resistance of each system to perform the recalibration in LabVIEW and send all the data collected by the sensors and transducers to an Excel file that processes these values and delivers a quadratic polynomial equation that describes each system. By equating the characteristic equations with the resistant equations, the operating point was determined. It is concluded that when associating pumps with the same characteristics in series there is an increase in load and if the pumps are associated in parallel there is an increase in flow, when compared to the operating point when only one pump operates. It is recommended to remove the water from the reservoir tank after each practice and if the test bench is to remain unused, the moving parts of the pumps must be rotated several times a week.