Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
METHODOLOGY FOR TESTING FLOW CAPACITY IN SAFETY VALVES OPERATING WITH COMPRESSED AIR AND ATMOSPHERIC BACK PRESSURE
Submission Author:
Thiago de Freitas Hülle Sant'Anna , ES
Co-Authors:
Thiago de Freitas Hülle Sant'Anna, Rogerio Ramos, Gabriel Fontoura
Presenter: Thiago de Freitas Hülle Sant'Anna
doi://10.26678/ABCM.COBEM2019.COB2019-0546
Abstract
It is presented and evaluated a methodology to define flow capacity of safety valves to relieve compressed air operating at atmospheric back pressure. ASME PTC 25 and ASME UG-131 recommendations are considered as a base lines, in order to validate the methodologies developed. The primary element for flow measurement is an orifice plate, data acquisition and test operations are done through a supervisory control and data acquisition system. First tests are performed on a safety valve calibrated to opening pressure of 6 kgf /cm2. Readings are analyzed according to the instructions and parameters established in the ASME recommendations. Results and methodologies of the tests are calculated and criticized. All the results obtained fulfill all requirements, except by the oscillation of the mass flow, which shows to be higher than the established limits. Solutions are addressed to surpass such question.
Keywords
Safety valve, flow capacity, safety valve performance test
