Diseño, construcción e implementación de un sistema hidráulico para mantener la presión constante en una máquina de ensayos de termofluencia.

Abstract

The objective of this project is to design, build and implement a hydraulic system using a controller to keep the pressure constant in a creep testing machine. For this, the necessary information was collected about the operation of the creep machine and hydraulic systems, their characteristics, properties, advantages and disadvantages through a bibliographic study to make a QFD (Quality Function Deployment) matrix where we proceed to define the specifications of the design and selection and later to choose the best alternative for the system to be implemented. After that, the selection of the different mechanical elements was made depending on the maximum capacity that can be applied in the test, and of electrical elements that will allow the manual and / or automatic operation of the system, too. To complete the study of the system we proceed to design and program the electrical circuit with its different actions of inputs, outputs and digital memories with the help of the Software LOGO Soft Comfort V8.0. Finally, the entire hydraulic system was implemented in the creep testing machine to verify if it meets the indicated requirements and correct operation. In conclusion, the hydraulic system implemented can maintain a constant pressure according to the range that you want to apply in the tests; its maximum capacity can reach 2000 psi. It is recommended to review the operation and maintenance manual of the hydraulic system in order to carry out the tests correctly and at the same time extend the useful life of the equipment