Rediseño del cuerpo de una válvula de globo para la empresa Tecval S.A.S

Abstract

The following project presents an improvement opportunity for Tecval S.A.S., a company that designs and manufactures industrial valves. S.A.S., a company that designs and manufactures industrial valves and participates in different projects around the country. projects around the country. The objective of the project was to redesign the body of one of the valve models of the product lines of the of one of the valve models of the company's product lines, a pressure regulating globe valve, which is a pressure regulating globe valve, because its design was created more than 20 years ago and has features that do not years ago and has characteristics that do not make it competitive with the market. As a starting point, the design of the current valve body that the company has was analyzed, based on simulations of CFD simulations using Ansys software were used to analyze the current valve body design of the company. preliminary diagnosis of the valve's characteristics was made with the objective of proposing a new design that would to propose a new design that would provide a higher flow coefficient (Cv) than the current one and reduce the and reduce the weight of the valve body. Considering the results of the CFD analysis and using SolidWorks software, a new design was proposed. SolidWorks software, a new model was proposed with steeper curves that would allow a better to allow a better fluid movement, preserving the geometrical characteristics of the nozzle the geometric characteristics of the valve nozzle. In addition, the thickness of the valve body was the valve body, taking into account the parameters of the ASME B16.34- 2017 standard for an ANSI B16.34- 2017 pressure rating. 2017 for an ANSI 300# pressure rating and maintaining the dimensions of the flanges according to the flange dimensions according to ASME B16.5-2019; in addition, aspects such as casting process and machining were considered. Casting process and machining were also considered. Subsequently, a new CFD analysis was performed to the designed body, obtaining a Cv of 872, a higher value with respect to the Cv of the initial body and with respect to the total Cv of valves of other brands. valves of other brands, so it was determined as a consistent result, taking into account that at the moment of mounting the valve trim the Cv decreases. In addition, with the reduction of the thickness, the weight of the valve was directly reduced. valve. Finally, a stress analysis was performed using the Ansys program, to obtain the safety factor of the new body, taking into account critical values such as the mechanical mechanical characteristics of the material, ASTM A536 grade 65-45-12, and the hydrostatic test pressure according to the hydrostatic test pressure according to ASME B16.34. According to these parameters,safety factors between 1 and 5 were obtained, so that taking into account that the real conditions of the material exceed the characteristics of the material. the real conditions of the material exceed the minimum characteristics of the standard, and that the valve will be subjected to that the valve will be subjected to much lower pressures, the design is acceptable for a rating of 150# and 300#.