수치해석을 통한 배플이 추가된 버터플라이 밸브의 성능 예측

Abstract

In the industries, pipelines are used and various kinds of valves are applied for the purpose of use and for controlling flow rates according to pressure and velocity, which are the physical properties of internal fluids. Glove valves, which are commonly used in the industries for opening and closing of piping and precision flow control, are subject to technical and economic limitations due to complex internal flow path geometry and consequent structural instability. On the other hand, butterfly valves have advantages such as low weight and low manufacturing costs, but it is difficult to control flow at 60° or higher. Therefore, in this study, the performance of the valve was assessed by analyzing the flow coefficient of the glove valve and the butterfly valve of the same diameter, and the performance with the glove valve of the same diameter was compared by adding one-half baffle to the rear end of the butterfly valve. For butterfly valves with baffles added, flow control similar to glove valves has been verified.