使用了流动分析软件对A、B两种双座调阀进行了通流分析,给出了调阀通流能力和实际流动状态,在分析流动特性对阀杆振动摩擦的影响基础上,得出了以下结论:B型调阀结构流动损失较大,流动效率低于A型调阀;两种调阀受到旋转力矩较小,但因气流冲击导致旋转,结构中应增加阀杆防转机制;A型和B型调阀的阀杆悬臂结构容易在气流力作用下产生偏向磨损,B型调阀比A型更能抗击侧向激振。 Flow analysis software was used to analyze the flow of two kinds of two-seat valves A and B, and the flow capacity and actual flow condition of the valve were given. Based on the analysis of the influence of flow characteristics on the vibration of the valve stem, The following conclusions are drawn: the flow loss of the B-type valve structure is larger and the flow efficiency is lower than that of the A-type valve; the two kinds of valve are subject to the smaller torque but the rotation is caused by the airflow impact, A-type and B-type valve stem cantilever structure prone to bias under the action of air flow, B-type valve than the A-type side to withstand lateral excitation.