V型球阀阀芯的设计优化

为了解决V型球阀在相对较小开度下等百分比特性较差的问题,首次提出了一套对V型球阀阀芯的设计优化流程.该流程采用数值模拟、样本均值评估及面积平均等效法来计算DN50V型球阀阀芯等百比特性系数RQ,并用实验来验证流程的合理性,进一步推广到其他型号的球阀中.结果表明,原始DN50V型球阀阀芯在开度28.6％到7.1％区域不符...

Design Optimization of V-Shaped Ball Valve Core

In order to solve the problem that the percentage characteristic of V-shaped ball valve is poor at the relatively small opening degree,a design optimization flow of valve core is proposed for the first time.The process uses numerical simulation,sample mean evaluation and area average equivalence to calculate the equal percentage characteristics coefficient RQ of DN50 V-shaped ball valve core,and uses experiments to verify the rationality of the process,and further extends it to other models of ball valves.The results show that the original DN50 V-shaped Ball valve core does not meet the equal percentage characteristics in the opening area of 28.6%to 7.1%.After the optimized design,the equal percentage characteristics coefficient RQ of the ball valve core has been effectively improved,and the level of increase has more than doubled.And the equal percentage characteristics coefficient obtained by test exceeds the optimized design results.Further extended in the DN80 V-shaped ball valve core,it is known that this optimization design method has universal applicability;V-shaped ball valve core design optimization method is an efficient and reliable valve core design method,can improve the level of Valve core flow control,improve the valve core design ability.