新型双向旋球阀工作过程动力学仿真分析

Dynamic Simulation and Analysis of the Work Process of a New Type Rotating Ball Valve with Double Direction Metal Sealing

针对具有双向硬密封功能的新型旋球阀的工作过程建立了动力学模型,采用Gear预估-校正算法对新型双向硬密封旋球阀工作过程动力学模型进行了求解和分析.结果表明,由于阀板的偏心结构,新型双向硬密封旋球阀开启时所需要的扭矩比关闭时所需要的扭矩要小;在水流为5 m/s的情况下,新型双向硬密封旋球阀开启时施加在轴上的扭矩不得大于5 500 N.m,关闭时施加在轴上的力不得大于4 650 N.m,否则引起水锤现象.

A dynamic model of the work process of a new type rotating ball valve with double direction metal sealing was established.And the dynamic model was simulated and analyzed by using Gear Predictor-Corrector Algorithm.The results of dynamic simulation and analysis revealed that the torsion of turning on the new type rotating ball valve was less than the torsion of closing up the new type rotating ball valve.And in order to avoid water hammer,the torsion of turning on the new type rotating ball valve should be less than or equal to 5 500 N·m,and the torsion of closing up the new type rotating ball valve should be less than or equal to 4 650 N·m,when the velocity of flowing water was 5 m/s.