Vibration characteristics of the two‐stage throttle valve induced by cavitation

The steam trap valve is used in thermal power systems to pour out condensate water and keep steam inside. While flowing through steam trap valves, the condensate water can easily reach cavitation, which may cause serious damage to the piping system. In this paper, in order to control cavitation inside steam trap valves, effects of sleeve parameters, including orifice diameter, installation angle and thickness, are investigated using a cavitation model. The pressure, velocity and vapor distribution inside valves are analyzed and compared for different sleeve geometrical parameters. The total vapor volumes are also predicted and compared. The results show that the sleeve parameters have a significant influence on the cavitation intensity and cavitation vapor distributions. Specifically, the orifice diameter of the sleeve has much larger effect on each aspect than that of other two geometrical parameters of the sleeve. The improved geometrical parameters of the sleeve are determined to suppress the cavitation inside the valve. The sleeve with smaller diameter orifices, higher installation angle (maximum 80°) and higher thickness is recommended in practice for better anti-cavitation performance. The work is of significance for cavitation control and the optimization design of steam trap valves.

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Vibration characteristics of the two‐stage throttle valve induced by cavitation

Cited by 3 publications

References 14 publications

Numerical study on the cavitating flow through poppet valves concerning the influence of flow instability on cavitation dynamics

Numerical study on the cavitating flow through poppet valves concerning the influence of flow instability on cavitation dynamics

Effect of the opening of a butterfly valve on the dynamic evolution of cavitation

Effects of Sleeve Parameters on Cavitation Control Performance in Steam Trap Valves

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