Design and internal cavitation characteristics of straight-through electric fully enclosed ultra-clean globe valve

The straight-through electric fully closed ultra-clean cut-off valve is a completely closed shut-off valve inside and outside. It relies on magnetic force as the driving force of the valve to control the opening and closing of the valve. In this paper, a new type of cut-off valve structure was designed, a mathematical model was established and its hydrodynamic characteristics were simulated by the computational fluid dynamics method. According to different inlet velocities and different valve openings, the internal cavitation phenomenon of the valve was analyzed. The external magnetic drive control device was designed in combination with the completely closed structure inside and outside the valve, and the magnetic field interference and force of the external permanent magnet and the embedded permanent magnet were studied. This study is helpful for the optimization design and practical engineering application of the ultra-clean valve.