Study on the Regulating Performance of Sliding Regulation-Valve

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Hu, Wei^1 ; Peng, Xiaoyong^1 ; Zhang, Yuan^1 ; Zheng, Yulan^1 ; Zhu, Fangyao^1

School of Civil Engineering, University of South China, Heng yang, Hunan

421000, China^1

关键词: Control valves;    Flow charac-teristics;    Reliable methods;    Resistance coefficients;    Tube walls;    Valve bodies;    Vortex currents;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012084/pdf
DOI  :  10.1088/1757-899X/301/1/012084

来源: IOP

【 摘 要 】

Using a proven reliable method of CFD to study the regulating performance of a sliding regulation valve with a conical spool and rugby body. The numerical simulation results indicate that no matter where the spool is located, the flow field always has a vortex at the center of the valve body; When the spool is at the origin, the vortex and resistance coefficient of the valve are the minimum; When the spool moves from the origin to the right (the opening of the valve becomes smaller) to reach a certain position later, vortex currents also begin to appear around the tube wall behind the orifice. In addition, the vortex increases as the throttling port decreases whereas the resistance coefficient of the valve ascends slowly with the increase of the deviation of the spool and the rise in series; This type of regulating valve has S type (slow at both ends, sensitive at the center) flow characteristics at the stroke, and is not affected by the size of Re.