Dynamic Performance Analysis of a Flow Control Valve -Considering the Spring Regulating Device

• Main Authors: Tang Chien Feng, 唐健峰
• Other Authors: 游憲一
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/35834317728335655756

碩士 === 國立中興大學 === 機械工程學系 === 87 === In the present paper, the dynamic performance of a flow control valve is simulated numerically by solving the character equations of the flow control valve. The effects of the transmission line and the spring regulator of the flow control device on the flow characteristics will be further investigated. The time series solutions of the valve performance are firstly presented at a specified valve opening. The functional relationships of the flow properties versus the valve openings are then studied completely. The results show that the flow rates out of the control valve are linearly proportional to the valve openings, when the valve openings are limited below a specific length, which is determined by the design properties of the flow control valve. The transient oscillations are observed due to the effects of the spring regulator inside the flow control valve. The steady state is attained after a short transient time. It is found the presence of the transmission line will delay the dynamic responses of the control valve. For a simplified flow control valve, the out flow rates are found not linearly related to the valve openings.