不同结构型式下水力旋流阀的气液固流动及性能OA

To study the gas-liquid-solid flow characteristics and working performance of hydrocyclone valves with different structural types,numerical simulation calculations of the gas-liquid-solid flow of hydrocyclone valves with three different structural designs were conducted based on the VOF and DPM models.The research results indicate that structural design can control the volume distribution of the gas phase,thereby affecting the flow characteristics and working performance of the hydrocyclone valve.By changing the equivalent radius,cavity width,and outlet diameter,the velocity streamline distribution,particle velocity,and particle size distribution in the water collection well,hydrocyclone valve,and downstream pipeline can be affected,resulting in hydrocyclone valves with different working performance.The gas-phase distribution area occupies the spatial distribution of particles and promotes the deposition of particles in the collection well.The flow resistance and interception characteristics of the hydrocyclone valves are related to the swirl and vortex formed by the gas phase distribution.Under the current working conditions and water collection well design,the R300 mm×L150 mm×d200 mm structure should be preferred.Its smaller resistance coefficient ensures a certain flow capacity,while the larger interception ratio does not cause secondary pollution due to water collection well overflow.For the off-peak scheduling conditions where only overflow of the water collection well is considered,the R300 mm×L200 mm×d280 mm structure and the R300 mm×L150 mm×d200 mm structure can be selected according to actual conditions.The research results provide a certain reference basis for expan-ding the operating conditions of hydrocyclone valves,as well as improving their selection capabilities.