Design and Analysis of Feed Check Valve Using Cfd

Abstract

Feed check valves are used as flow control equipment in many industries. The Feed check valve is fitted to the boiler, slightly below the working level in the boiler. It is used to supply high pressure feed water to the boiler and also to prevent the returning of feed water from the boiler if the feed pump fails to work the parameter for the performance of control valve analysis is flow coefficient. There is an experimental method to calculate the flow coefficient value of the valve, but the setup for the experimental validation is not readily available as these valves work at high pressure. Due to the progress of the flow simulation and numerical technique (CFD), it becomes possible to observe the flows inside a valve and to estimate the performance of a valve. The Feed check valve is fitted to the boiler, slightly below the working level in the boiler. It is used to supply high pressure feed water to the boiler and to prevent the returning of feed water from the boiler if feed pump fails to work. With rapid advancement in the area of flow simulation, CFD and thermal Numerical technique, the flow characteristics of the feed check valve can be studied effectively. Water is working fluid here and at different fluid inlet velocities compared (i.e. 20m/s, 30m/s, 40m/s and 50m/s) In this paper modeling and 3-dimensional flow simulation of a feed check valve is carried out using CATIA software and simulation done in ANSYS software to understand the inside flow characteristics and to determine prominent factors such as Pressure drop, Valve co- efficient. In the final phase, the discharge of the valve for a constant pressure drop of 1 bar is determined and flow patterns are visualized.