楔形节流阀节流流动规律分析及结构优化OA

To address the susceptibility of wedge choke valves to vibration fatigue and fluid erosion under extreme working conditions during well killing operations in high-pressure oil and gas wells,a fluid-structure in-teraction numerical model was established to systematically simulate and analyze the internal flow characteristics and structural optimization methods of throttle valves.The results showed that the segmented gradient wedge valve,through multi-stage pressure reduction and flow guidance optimization,significantly mitigated high flow velocities and dense vortices within the large opening range.This design expanded the controllable opening range and improved regulation accuracy and stability.Furthermore,increasing the buffer chamber diameter ef-fectively reduced the maximum flow velocity of the mud,however,when it reached 80 mm,the deceleration effect plateaued,and significant vortices emerged.Based on a comprehensive evaluation of flow velocity control and vortex suppression,the optimal structure is determined to be a segmented gradient wedge valve paired with a buffer chamber having both a radius and height of 65 mm.