Through the force analysis on ball valve of multiphase pump and basing on dynamic mesh model numerical calculation offered by FLUENT

ball valve force is affected by several main factors

such as gas-oil ratio

spring stiffness coefficient and the valve ball material

and influence laws on ball valve movement performances are obtained. With gas-oil ratio increasing

the valve ball force

lift and velocity decreases. When gas-oil ratio is more than 0.5

the valve ball force gradually achieve a balance. Once the gas-oil ratio is beyond a certain value

the impact of spring stiffness coefficient on the performances of the ball valve is little. The bigger the spring stiffness coefficient

the shorter the time of the valve ball reaching the equilibrium position and the maximum lift and velocity. Whether the material density of the valve ball is big or small

high gas-oil ratio greatly affects force

lift and velocity. The gas-oil ratio has little influence on steel and copper material of the valve ball and force

lift and velocity tend to be consistent.