Static Analysis on an Electromagnetic Rotating Ball Valve with Double Direction Metal Sealing in the Closing Condition

In order to explore the mechanical situation of special component about an electromagnetic rotating ball valve with double direction metal sealing in the closing condition, the stress and deformation of valve stem and valve plate had been analyzed, when the pipe forward and backward flow velocity was 5 m/s, by fluid-stricture interaction with fluid simulation software Star-ccm+ and finite element analysis software ABAQUS. Results show that the maximum stress is focused on the places where the valve stem and valve rod contact, the maximum deformation area of the stem is near the plate center, the size is about 3.6cm. The valve plate maximum stress is mainly concentrated in the support beams which are behind the valve plate, as well as the contact area of valve plate and stem. In addition, the maximum deformation area of plate is at the top, the size is about 9.3cm. Therefore, in order to ensure that the stem and the plate are not compromised and the sealing of the valve, the surface oxidation treatment could be used for improving the fatigue strength of the stem and a material by high-temperature forged steel or high-alloy steel could be used for madding plate to improve its mechanical strength.