Diseño y construcción de un equipo para control de nivel de líquidos

Abstract

Design and Construction of a Liquid Level Control Equipment for the Faculty of Science, ESPOCH. The design consists of a pump with a capacity of 5HP and suction height of 40m which is activated when the sensor measures a minimum height of 4.6cm and turns off when it measures a maximum height of 35.4cm, supplying water from the storage tank with dimensions of 35cm wide, 40cm long, 50cm high and a thickness of 6mm; to the main tank with the same characteristics but with a height of 40cm, maintaining a constant flow; by PVC pipe withstanding up to 80oC which is excellent because it works with temperatures above 30oC. A servo valve located at the bottom of the main tank returning the water forming a closed circuit, which due to its high cost was built with DC motor which is the actuator of the valve coupled to a globe valve. After using the analytical method, data obtained within the operating range of 7.69 was acquired and analyzed, reaching the following conclusions: average flow that leaves the pump 0.58603216 L/s which is related to the flow obtained by relating the height with filling time and tank area having a value of 0.52815833L/s with an efficiency of 90.1%, while the efficiency of using a control valve for the emptying time is 78% since the flow is decreasing and the emptying time increases then the thrust pressure also decreases; it has a valve constant for this design of 0.863 L/s which is obtained for this design. 863 L/s which is obtained for a maximum head of 35.4 cm height. For H1(s)as a function of inlet flow with a value of 17.25cm, a system gain of 0.07633s/cm2 is obtained. It is recommended to use other equipment in order to establish differences between them, analyze advantages and disadvantages and determine the efficiency of each one.